WO2022077346A1

WO2022077346A1 - Channel transmission method, terminal device and network device

Info

Publication number: WO2022077346A1
Application number: PCT/CN2020/121173
Authority: WO
Inventors: 陈文洪; 方昀
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2022-04-21
Also published as: CN116158040A

Abstract

Provided are a channel transmission method, a terminal device and a network device, which can improve PDCCH detection performance. The channel transmission method comprises: a terminal device determining, according to first configuration information, a detection mode applied to PDCCHs in a target CORESET, wherein the target CORESET is configured with a plurality of TCI states; and the detection mode is one of the following three modes: the first mode being detecting each PDCCH in the target CORESET by using the plurality of TCI states; the second mode being respectively detecting different PDCCHs, which carry the same information, in the target CORESET by using the plurality of TCI states; and the third mode being detecting each PDCCH in the target CORESET by using one of the plurality of TCI states.

Description

Channel transmission method, terminal device and network device

technical field

The embodiments of the present application relate to the field of communications, and more particularly, to a method for channel transmission, a terminal device, and a network device.

Background technique

In a New Radio (NR) system, multiple transmitting and receiving points (Transmission/Reception Point, TRP) can transmit the same Physical Downlink Control Channel (PDCCH) to improve the detection performance of PDCCH. Specifically, according to whether the PDCCH sent by different TRPs is transmitted by a single frequency network (Single Frequency Network, SFN), it can be divided into the following two enhancement methods:

Enhanced mode 1, multiple TRPs use SFN to send PDCCHs, that is, PDCCHs sent by multiple TRPs occupy the same physical resources (eg, the same Control Resource Set (CORESET) and search space). From the perspective of terminal reception, only one PDCCH needs to be detected. Since the channels between different TRPs and terminals are different, the network device needs to configure multiple Transmission Configuration Indicator (TCI) states for the CORESET where the PDCCH is located, corresponding to multiple TRPs respectively. The terminal needs to obtain large-scale parameters and channel estimation filters of the PDCCH based on multiple TCI states, so as to detect the PDCCH. The enhancement mode 1 is usually used in high-speed transmission scenarios (such as high-speed rail), and the channel strength of the PDCCH is enhanced by means of SFN transmission to improve the detection performance.

In the second enhancement mode, multiple TRPs transmit the PDCCH by means of repeated transmission, that is, the PDCCHs sent by the multiple TRPs carry the same control information, but are transmitted on different time domain resources or frequency domain resources. On the terminal side, it is necessary to receive the PDCCHs sent by different TRPs respectively, and combine the received signals or the detected control information, so as to obtain the final detection result. The network device also needs to configure multiple TCI states for the CORESET where the PDCCH is located, corresponding to multiple TRPs respectively, and different TCI states are used for the detection of repeated transmission of different PDCCHs. Enhancement mode 2 can be used in Ultra-Reliable and Low Latency Communication (URLLC) scenarios, where the same control information is repeatedly transmitted on different resources through different TRPs, thereby obtaining additional diversity gain and improving PDCCH detection. performance.

However, both of the above two enhancement methods need to be implemented by configuring multiple TCI states for CORESET, that is, their configuration signaling is similar. In this case, the terminal side cannot know which enhancement method is currently used by the network side, and cannot use the corresponding method to detect the PDCCH.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a channel transmission method, a terminal device, and a network device. Under the condition that the terminal device does not know the purpose and application scenario of multiple currently configured TCI states, it can use other configurations to communicate with the network side. The PDCCH detection is performed in the reception mode corresponding to the transmission mode, thereby improving the detection performance of the PDCCH.

In a first aspect, a method for channel transmission is provided, the method comprising:

The terminal device determines, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET, wherein the target CORESET is configured with multiple TCI states;

Among them, the detection method is one of the following three methods:

The first way is to use the multiple TCI states to detect each PDCCH in the target CORESET;

The second method is to use the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively;

The third way is to detect each PDCCH in the target CORESET using one of the multiple TCI states.

In a second aspect, a method for channel transmission is provided, the method comprising:

The network device sends first configuration information and multiple TCI states of the target CORESET to the terminal device, wherein the first configuration information is used by the terminal device to determine the detection method adopted by the PDCCH in the target CORESET;

Among them, the detection method is one of the following three methods:

In a third aspect, a terminal device is provided for executing the method in the above-mentioned first aspect.

Specifically, the terminal device includes functional modules for executing the method in the first aspect.

In a fourth aspect, a network device is provided for executing the method in the second aspect.

Specifically, the network device includes functional modules for executing the method in the second aspect above.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect.

In a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and execute the computer program stored in the memory to execute the method in the second aspect.

In a seventh aspect, an apparatus is provided for implementing the method in any one of the above-mentioned first to second aspects.

Specifically, the apparatus includes: a processor for invoking and running a computer program from a memory, so that a device on which the apparatus is installed executes the method in any one of the first to second aspects above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to execute the method in any one of the first to second aspects above.

In a ninth aspect, a computer program product is provided, comprising computer program instructions, the computer program instructions causing a computer to perform the method in any one of the first to second aspects above.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the above-mentioned first to second aspects.

Through the above technical solution, the terminal device can determine, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET configured with multiple TCI states. That is, when the terminal device does not know the purpose and application scenario of the currently configured multiple TCI states, it can detect the PDCCH by using the reception mode corresponding to the transmission mode on the network side according to other configurations, thereby improving the detection of the PDCCH. performance. It can effectively avoid the problem that the PDCCH cannot be correctly demodulated due to the wrong way of PDCCH detection.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture to which an embodiment of the present application is applied.

FIG. 2 is a schematic diagram of a physical resource of a PDCCH provided by the present application.

FIG. 3 is a schematic diagram of the correspondence between a CORESET and a search space provided by the present application.

FIG. 4 is a schematic diagram of a TCI state configuration of a PDSCH provided by the present application.

FIG. 5 is a schematic flowchart of a method for channel transmission according to an embodiment of the present application.

FIG. 6 is a schematic diagram of determining a detection method according to time domain resource configuration information of a target CORESET according to an embodiment of the present application.

FIG. 7 is a schematic diagram of determining a detection method according to repeated configuration information of a target CORESET according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

FIG. 9 is a schematic block diagram of a network device provided according to an embodiment of the present application.

FIG. 10 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

FIG. 11 is a schematic block diagram of an apparatus provided according to an embodiment of the present application.

FIG. 12 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. With regard to the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device may be a station (STATION, ST) in the WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In this embodiment of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).

In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks The network equipment or base station (gNB) in the PLMN network or the network equipment in the future evolved PLMN network or the network equipment in the NTN network, etc.

As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc. Optionally, the network device may also be a base station set in a location such as land or water.

In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

Exemplarily, a communication system 100 to which this embodiment of the present application is applied is shown in FIG. 1 . The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). The network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. ; The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the description and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

It should be understood that the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.

In this embodiment of the present application, "predefinition" may be implemented by pre-saving corresponding codes, forms, or other means that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The implementation method is not limited. For example, predefined may refer to the definition in the protocol.

In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which are not limited in this application.

For better understanding of the embodiments of the present application, an NR downlink control channel related to the present application is described.

In the NR system, the terminal device determines the resources for detecting the PDCCH through the CORESET and the search space configured on the network side. Among them, CORESET is used to determine the frequency domain resource size (such as the occupied physical resource block (PRB) number) and the time domain resource size (such as the occupied orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing)) of the PDCCH in a time slot frequency-division multiplexing, the number of OFDM symbols), including the starting position of the frequency domain resource, the length of the frequency domain resource and the length of the time domain resource, etc. The search space is used to determine the time domain resource position of the PDCCH, including the time domain resource starting position and monitoring period. According to a CORESET and a search space configuration, the terminal can determine the location of the physical resources for detecting the PDCCH, such as the resources marked by shadows in FIG. 2 .

Specifically, the network side configures up to three CORESETs through high-layer signaling, and each CORESET has its own CORESET identity (Identity, ID). At the same time, the network side can also configure at least one search space through high-level signaling, and the configuration parameters of each search space include the ID of the associated CORESET, aggregation level, search space type, and the like. Each search space can only be associated with one CORESET, but one CORESET can be associated with multiple search spaces, as shown in Figure 3. The search space type includes the configuration of whether the search space is a common search space (Common Search Space, CSS) or a terminal equipment-specific search space (UE Search Space, USS), and the downlink control information that the terminal needs to detect in the search space (Downlink Control Information, DCI) format (format). If the search space is CSS, the search space type (searchSpaceType) in the search space is configured as common (Common), and the corresponding DCI formats to be detected include DCI format 2_0, DCI format 2_1, DCI format 2_2, DCI format 2_3, DCI format At least one of formats such as 0_0 and DCI format 1_0, that is, the DCI is generally used for the transmission of scheduling control information. If the search space is USS, the corresponding DCI formats to be detected include DCI format 0_0 and DCI format 1_0 (formats0-0-And-1-0), or include DCI format 0_1 and DCI format 1_1 (formats0-1-And-1 -1), that is, the DCI is generally used to schedule uplink or downlink data transmission.

To facilitate a better understanding of the embodiments of the present application, a Quasi-co-located (QCL) indication of downlink signal transmission related to the present application is described.

In the NR system, the network device can configure the corresponding TCI state for each downlink signal or downlink channel, indicating the QCL reference signal corresponding to the target downlink signal or the target downlink channel, so that the terminal can perform the target downlink signal or target downlink channel based on the reference signal. reception.

Among them, a TCI state can contain the following configurations:

TCI state ID, used to identify a TCI state;

QCL info 1;

QCL information 2.

Among them, a QCL information also includes the following information:

QCL type (type) configuration, which can be one of QCL type A, QCL type B, QCL type C, and QCL type D;

QCL reference signal configuration, including the ID of the cell where the reference signal is located, the Band Width Part (BWP) ID, and the identifier of the reference signal (which can be Channel State Information Reference Signal (CSI-RS) resource ID or Synchronization Signal Block (SSB) index).

The QCL type of at least one of QCL information 1 and QCL information 2 must be one of typeA, typeB, and typeC, and the QCL type of the other QCL information (if configured) must be QCL type D.

Among them, the definitions of different QCL type configurations are as follows:

'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread};

'QCL-TypeB': {Doppler shift, Doppler spread};

'QCL-TypeC': {Doppler shift, average delay};

'QCL-TypeD': {Spatial Rx parameter}.

If the network device configures the QCL reference signal of the target downlink channel as the reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeA, typeB or typeC, the terminal device can assume that the target downlink channel is the same as the reference SSB. Or the target large-scale parameters of the reference CSI-RS resources are the same, so that the same corresponding reception parameters are used for reception, and the target large-scale parameters are determined by the QCL type configuration. Similarly, if the network device configures the QCL reference signal of the target downlink channel as the reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as type D, the terminal device can use the same as receiving the reference SSB or reference CSI-RS resource. The receive beam with the same RS resource (that is, the Spatial Rx parameter) is used to receive the target downlink channel. Generally, the target downlink channel and its reference SSB or reference CSI-RS resources are transmitted by the same TRP or the same antenna panel or the same beam on the network side. If the transmission TRPs, transmission panels or transmission beams of the two downlink signals or downlink channels are different, different TCI states are usually configured.

For the downlink control channel, the TCI state may be indicated by means of radio resource control (Radio Resource Control, RRC) signaling or RRC signaling+MAC signaling. For the downlink data channel, the available TCI state set is indicated by RRC signaling, and some of the TCI states are activated by Media Access Control (MAC) layer signaling. One or two TCI states are indicated in the activated TCI state, which are used for the PDSCH scheduled by the DCI. For example, as shown in Figure 4, the network device indicates N candidate TCI states through RRC signaling, activates K TCI states through MAC signaling, and finally indicates 1 from the activated TCI state through the TCI state indication field in

DCI

1 or 2 TCI states used.

In an NR system, multiple TRPs can transmit the same PDCCH to improve the detection performance of the PDCCH. Specifically, according to whether the PDCCH sent by different TRP adopts SFN transmission, it can be divided into the following two enhancement modes:

Enhanced mode 1, multiple TRPs use SFN to send PDCCHs, that is, PDCCHs sent by multiple TRPs occupy the same physical resources (eg, the same CORESET and search space). From the perspective of terminal reception, only one PDCCH needs to be detected. Since the channels between different TRPs and terminals are different, the network device needs to configure multiple TCI states for the CORESET where the PDCCH is located, corresponding to multiple TRPs respectively. The terminal needs to obtain large-scale parameters and channel estimation filters of the PDCCH based on multiple TCI states, so as to detect the PDCCH. The enhancement mode 1 is usually used in high-speed transmission scenarios (such as high-speed rail), and the channel strength of the PDCCH is enhanced by means of SFN transmission to improve the detection performance.

In the second enhancement mode, multiple TRPs transmit the PDCCH by means of repeated transmission, that is, the PDCCHs sent by the multiple TRPs carry the same control information, but are transmitted on different time domain resources or frequency domain resources. On the terminal side, it is necessary to receive the PDCCHs sent by different TRPs respectively, and combine the received signals or the detected control information, so as to obtain the final detection result. The network device also needs to configure multiple TCI states for the CORESET where the PDCCH is located, corresponding to multiple TRPs respectively, and different TCI states are used for the detection of repeated transmission of different PDCCHs. The enhanced mode 2 can be used in the URLLC scenario, and the same control information is repeatedly transmitted on different resources through different TRPs, thereby obtaining additional diversity gain and improving the PDCCH detection performance.

The above two enhancement methods can improve the detection performance of PDCCH, but their application scenarios and transmission methods are different. Correspondingly, the channel estimation and PDCCH detection methods of the terminal are also different. However, both of the above two enhancement methods need to be implemented by configuring multiple TCI states for CORESET, that is, their configuration signaling is similar. In this case, the terminal side cannot know which enhancement method is currently used by the network side, and cannot use the corresponding method to detect the PDCCH. If the wrong method is adopted, the reliability of PDCCH transmission will be affected.

Based on the above problems, the present application proposes a channel transmission scheme. Under the condition that the terminal device does not know the purpose and application scenario of the currently configured multiple TCI states, it can use other configurations corresponding to the transmission method on the network side. The receiving mode is used to detect the PDCCH, thereby improving the detection performance of the PDCCH.

The technical solutions of the present application are described in detail below through specific embodiments.

FIG. 5 is a schematic flowchart of a method 200 for channel transmission according to an embodiment of the present application. As shown in FIG. 5 , the method 200 may include at least part of the following contents:

S210, the network device sends first configuration information and multiple TCI states of the target CORESET to the terminal device, wherein the first configuration information is used by the terminal device to determine the detection method adopted by the PDCCH in the target CORESET;

S220, the terminal device receives the first configuration information and multiple TCI states of the target CORESET sent by the network device;

S230, the terminal device determines, according to the first configuration information, a detection mode adopted by the PDCCH in the target CORESET.

That is, in this embodiment of the present application, the target CORESET is configured with multiple TCI states.

Among them, the detection method is one of the following three methods:

Optionally, in the third manner, one TCI state among the multiple TCI states is the first TCI state among the multiple TCI states, or, one TCI state among the multiple TCI states is the multiple TCI state. The TCI state with the lowest TCI state index among the TCI states.

It should be noted that, the first manner and/or the third manner may be similar to the aforementioned enhancement manner 1, and the second manner may be similar to the foregoing enhancement manner 2.

Specifically, in the first manner, for each PDCCH in the target CORESET, the terminal device uses the multiple TCI states to perform detection. For example, the terminal device obtains multiple sets of channel large-scale parameters from the multiple TCI states respectively, and obtains the filter used for channel estimation according to these large-scale parameters, so as to perform channel estimation for each PDCCH based on the filter and the PDCCH DMRS, and obtain each PDCCH channel estimation. PDCCH channels; PDCCH detection is performed based on the obtained PDCCH channels. For another example, the terminal device obtains multiple receive beams from the multiple TCI states respectively; for each PDCCH, respectively performs PDCCH reception based on these receive beams; performs each PDCCH detection based on PDCCHs obtained from different receive beams.

Specifically, in the second manner, the terminal device uses the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively. For example, the network device may configure two TCI states for the CORESET, which are respectively used to detect two different PDCCHs that carry the same information in the target CORESET. The control information carried in the two PDCCHs is the same, but they may occupy different time-frequency resources, for example, may occupy different OFDM symbols or time slots. In another implementation, the two PDCCHs may be PDCCHs in two PDCCH candidates.

Specifically, in the third manner, the terminal device detects each PDCCH in the target CORESET using only one TCI state among the multiple TCI states. In other words, other TCI states in the plurality of TCI states are not used for PDCCH detection. For example, the one TCI state may be the first TCI state among the multiple TCI states, or the second TCI state among the multiple TCI states, or the TCI with the lowest TCI state ID among the multiple TCI states state, or a TCI state determined by the terminal from the multiple TCI states according to other configuration information, and so on. In an embodiment, the network device configures two TCI states for the target CORESET, but the terminal device only adopts the first TCI state, and the second TCI state is not used for PDCCH detection.

In an implementation manner, the terminal device may determine the detection method adopted by the PDCCH in the target CORESET from the first manner and the second manner according to the first configuration information, that is, the first configuration information is in some configurations, the The detection mode is the first mode, and in other configurations, the detection mode is the second mode. Alternatively, the terminal device may determine, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET from the first mode and the third mode, that is, in some configurations of the first configuration information, the detection mode is the first detection mode. mode, in other configurations, the detection mode is the third mode. Alternatively, the terminal device may determine, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET from the second mode and the third mode, that is, in some configurations of the first configuration information, the detection mode is the second detection mode. mode, in other configurations, the detection mode is the third mode. Alternatively, the terminal device may determine the detection mode adopted by the PDCCH in the target CORESET from the first mode, the second mode and the third mode according to the first configuration information, that is, the first configuration information is in some configurations, the detection mode The mode is the first mode, in other configurations, the detection mode is the second mode, and in other configurations, the detection mode is the third mode.

Optionally, in this embodiment of the present application, the first configuration information includes but is not limited to at least one of the following:

Time domain resource configuration information of the target CORESET;

Duplicate configuration information of the target CORESET;

The configuration of the search space associated with this target CORESET;

The transmission mode configuration of the Physical Downlink Shared Channel (PDSCH) on the BWP where the target CORESET is located.

It should be noted that the terminal device may obtain the transmission mode of the network side for the PDCCH in the target CORESET based on the first configuration information, and the terminal device may determine to use the receiving mode corresponding to the transmission mode of the network side according to the first configuration information. The detection of the PDCCH is performed in a manner to improve the detection performance of the PDCCH.

Optionally, in some embodiments, S230 is described in detail below through Example 1 to Example 4.

Example 1, the first configuration information is time domain resource configuration information of the target CORESET.

Wherein, the time-domain resource configuration information indicates one or more groups of time-domain resources used for sending the PDCCH.

Specifically, in Example 1, S230 may specifically be:

In the case where the time domain resource configuration information indicates a group of time domain resources for sending PDCCH, the terminal device determines to use the first method to detect the PDCCH in the target CORESET, or the terminal device determines to use the third method way to detect the PDCCH in the target CORESET;

In the case where the time domain resource configuration information indicates multiple groups of time domain resources for sending PDCCH, the terminal device determines to use the second method to detect the PDCCH in the target CORESET.

Optionally, in Example 1, in the case where multiple groups of time-domain resources for sending PDCCH are indicated in the time-domain resource configuration information, the terminal device uses the multiple TCI states to use the multiple groups for sending PDCCH, respectively. Different PDCCHs carrying the same information in the target CORESET are detected on the time domain resources of the target CORESET.

Optionally, in Example 1, when multiple groups of time domain resources for sending PDCCH are indicated in the time domain resource configuration information, different groups of time domain resources for sending PDCCH occupy different OFDMs in the same time slot. Symbols, or different groups of time domain resources used for transmitting PDCCH occupy adjacent downlink time slots.

Example 2, the first configuration information is the repeated configuration information of the target CORESET.

Wherein, the repetition configuration information indicates whether to perform PDCCH repetition transmission.

Specifically, in Example 2, S230 may specifically be:

In the case where repeated PDCCH transmission is not indicated by the repeated configuration information, the terminal device determines to use the first method to detect the PDCCH in the target CORESET, or the terminal device determines to use the third method to detect the PDCCH in the target CORESET PDCCH;

In the case that the repeated PDCCH transmission is indicated by the repeated configuration information, the terminal device determines to use the second method to detect the PDCCH in the target CORESET.

Optionally, in Example 2, in the case that the repeated PDCCH transmission is indicated by the repeated configuration information, the terminal device adopts the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively;

The different PDCCHs occupy different time domain resources, or the different PDCCHs occupy different frequency domain resources, or the different PDCCHs occupy different PDCCH candidates.

Optionally, in Example 2, the repetition configuration information is further used to indicate a manner of repetition transmission of the PDCCH in the target CORESET. For example, it can be used to indicate whether the repeated transmission of the PDCCH adopts a time-division multiplexing (TDM) mode or a frequency-division multiplexing (Frequency-division multiplexing, FDM) mode.

Example 3, the first configuration information is the configuration of the search space associated with the target CORESET.

The configuration of the search space includes N TCI states, where N=0, or N=1, or N=2.

Specifically, in Example 3, S230 may specifically include at least one of the following:

In the case where the configuration of the search space associated with the target CORESET does not indicate the TCI state, the terminal device determines to use the first method to detect the PDCCH in the target CORESET, or the terminal device determines to use the third method to detect the PDCCH PDCCH in the target CORESET;

In the case where the configuration of each search space associated with the target CORESET indicates a TCI state, and the TCI states indicated in the configurations of different search spaces are not exactly the same, the terminal device determines to use the second method to detect the target CORESET PDCCH in ;

In the case where the configuration of each search space associated with the target CORESET indicates a TCI state, and the TCI states indicated in the configurations of different search spaces are the same, the terminal device determines to use the third method to detect the target CORESET. the PDCCH;

In the case that multiple TCI states are indicated in the configuration of the search space associated with the target CORESET, the terminal device determines to use the first method to detect the PDCCH in the target CORESET.

Optionally, in Example 3, when the TCI state is indicated in the configuration of the search space associated with the target CORESET, the terminal device uses the TCI state indicated in the configuration of the search space associated with the target CORESET to detect the corresponding search. PDCCH in space. For example, if the configuration of the first search space associated with the target CORESET indicates TCI state 0, and the configuration of the second search space indicates TCI state 1, the terminal device uses TCI state 0 to detect the PDCCH in the first search space, and uses TCI state 0 to detect the PDCCH in the first search space. State 1 detects the PDCCH in the second search space.

Optionally, in Example 3, a TCI state is indicated in the configuration of each search space associated with the target CORESET, and the TCI states indicated in the configurations of different search spaces are not exactly the same, and different TCIs are configured. Different PDCCHs carrying the same information are respectively carried in the search spaces of the states. At this time, in the search space configured with different TCI states, the terminal device uses the configured TCI states to detect different PDCCHs carrying the same information respectively.

Optionally, in Example 3, the terminal device receives second configuration information sent by the network device, where the second configuration information is used to configure the index of the adopted TCI state for the search space associated with the target CORESET.

Example 4, the first configuration information is the PDSCH transmission mode configuration on the BWP where the target CORESET is located.

The transmission mode is configured to indicate that multiple TCI states are used to detect the same PDSCH.

Specifically, in Example 4, S230 may specifically be:

In the case where the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, the terminal device determines to use the first mode to detect the PDCCH in the target CORESET;

If the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, the terminal device determines to use the second mode to detect the PDCCH in the target CORESET, or the terminal device determines to use the third mode Detect the PDCCH in the target CORESET.

It should be noted that the TCI states of PDSCH and PDCCH are independently configured. The multiple TCI states used for PDSCH detection and the multiple TCI states used for PDCCH detection may be the same or different.

Optionally, in Example 4, when the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, each demodulation reference signal (Demodulation Reference Signal, DMRS) port of the PDSCH is associated with the same PDSCH. Multiple TCI states.

Optionally, in some embodiments, the terminal device may perform PDCCH detection in the target CORESET based on the determined detection manner.

Optionally, when the terminal device determines to use the second method to detect the PDCCH in the target CORESET, the terminal device combines the PDCCH signals respectively received in the multiple TCI states, and then performs the PDCCH signal in the PDCCH. Detection of control information.

The channel transmission scheme of the present application will be described in detail below through Embodiment 1 to Embodiment 4.

In Embodiment 1, the network device indicates the first configuration information and multiple TCI states corresponding to the target CORESET. The first configuration information is time domain resource configuration information of the target CORESET.

For example, the network device may configure the time domain resource configuration information of the target CORESET through RRC signaling, and indicate the multiple TCI states through MAC layer signaling.

Typically, the multiple TCI states are two TCI states.

In Embodiment 1, the terminal device determines, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET configured with multiple TCI states.

Among them, the detection method is one of the following three methods:

The third way is to detect each PDCCH in the target CORESET using only one TCI state of the plurality of TCI states.

Specifically, in the first manner, for each PDCCH in the target CORESET, the terminal device uses the multiple TCI states to perform detection. For example, the terminal device obtains multiple sets of channel large-scale parameters from the multiple TCI states respectively; obtains the filter used for channel estimation according to these large-scale parameters, thereby performs channel estimation based on the PDCCH DMRS, and obtains the PDCCH channel; based on the obtained PDCCH channel The detection of PDCCH is performed. For another example, the terminal device obtains multiple receiving beams from the multiple TCI states, respectively performs PDCCH reception based on these receiving beams, and performs PDCCH detection based on PDCCHs obtained from different receiving beams.

Specifically, in the third manner, the terminal device detects each PDCCH in the target CORESET using only one TCI state among the multiple TCI states. In other words, other TCI states in the plurality of TCI states are not used for PDCCH detection. For example, the one TCI state may be the first TCI state among the multiple TCI states, or the second TCI state among the multiple TCI states, or the TCI with the lowest TCI state ID among the multiple TCI states status, and so on. In an embodiment, the network device configures two TCI states for the target CORESET, but the terminal device only adopts the first TCI state, and the second TCI state is not used for PDCCH detection.

Optionally, in an implementation manner of Embodiment 1, the terminal device may determine, according to the first configuration information, the detection manner adopted for the PDCCH in the target CORESET from the first manner and the second manner, and when the When the first configuration information indicates the first configuration, the first method is adopted, and when the first configuration information indicates the second configuration, the second method is adopted; In the third method, the detection method adopted by the PDCCH in the target CORESET is determined. When the first configuration information indicates the third configuration, the first method is adopted, and when the first configuration information indicates the fourth configuration, the third method is adopted. ; Or, the terminal device can determine the detection mode adopted by the PDCCH in the target CORESET from the second mode and the third mode according to the first configuration information, and when the first configuration information indicates the fifth configuration, adopt the first configuration information. In the second mode, when the first configuration information indicates the sixth configuration, the third mode is adopted.

Optionally, in an implementation manner of Embodiment 1, when the time domain resource configuration information of the target CORESET indicates a group of time domain resources for sending PDCCH, the terminal device determines to use the first method to detect the time domain resources in the target CORESET. PDCCH, as shown in A in Figure 6, each group of time domain resources includes two OFDM symbols; when multiple groups of time domain resources for sending PDCCH are indicated in the time domain resource configuration information of the target CORESET, the terminal device determines to use the first time domain resource. The PDCCH in the CORESET is detected in two ways, as shown in B in FIG. 6 , each group of time domain resources includes two OFDM symbols.

Optionally, in another implementation manner of Embodiment 1, when the time domain resource configuration information of the target CORESET indicates a group of time domain resources for sending PDCCH, the terminal device determines to use the third method to detect the target. For the PDCCH in CORESET, as shown in C in Figure 6, each group of time domain resources includes two OFDM symbols; when the time domain resource configuration information of the target CORESET indicates multiple groups of time domain resources for sending PDCCH, the terminal equipment It is determined to use the second method to detect the PDCCH in the target CORESET. As shown in B in FIG. 6 , each group of time domain resources includes two OFDM symbols.

Specifically, in Embodiment 1, when the time-domain resource configuration information of the target CORESET indicates multiple groups of time-domain resources used for sending PDCCH, the terminal device adopts the multiple TCI states in the multiple groups of time-domain resources used for sending PDCCH, respectively. Different PDCCHs carrying the same information are detected in time domain resources. Wherein, different groups of time domain resources used for transmitting PDCCH occupy different OFDM symbols in the same time slot, or occupy adjacent downlink time slots, for example, occupy the same OFDM symbol in adjacent downlink time slots. For example, the network device configures two sets of time domain resources for sending PDCCH, the terminal device uses the first TCI state to detect the first PDCCH in the first set of time domain resources, and uses the second TCI state to detect the second set of time domain resources The second PDCCH, the first PDCCH and the second PDCCH carry the same control information. Specifically, as shown in B in FIG. 6 , each group of time domain resources includes two OFDM symbols in different time slots.

Optionally, in Embodiment 1, the terminal device performs PDCCH detection in the target CORESET in a deterministic manner.

Specifically, when the terminal device determines to use the first manner to detect the PDCCH in the target CORESET, the detection method is as described above for the first manner.

Specifically, when the terminal device determines to use the second method to detect the PDCCH in the target CORESET, the terminal device combines the PDCCH signals respectively received in the multiple TCI states, and then detects the control information in the PDCCH. The detection method is as follows: The previous description is for the second mode.

Specifically, when the terminal device determines to use the third manner to detect the PDCCH in the target CORESET, the detection method is as described above for the third manner. At this time, the terminal device only uses the large-scale parameters or receive beams obtained from one TCI state to detect each PDCCH in the target CORESET.

Embodiment 1 reuses the time domain resource configuration information of the target CORESET to indicate the transmission mode of the PDCCH, and no additional signaling overhead is required, so that the terminal can perform detection in a corresponding manner, avoiding erroneous detection of the PDCCH.

In Embodiment 2, the network device indicates the first configuration information and multiple TCI states corresponding to the target CORESET. Wherein, the first configuration information is the repeated configuration information of the target CORESET.

Specifically, the network device may include the repeated configuration information of the target CORESET in the configuration information of the target CORESET. For example, the repeat configuration information may be used to indicate whether the PDCCH in the target CORESET is repeatedly transmitted.

In Embodiment 2, the terminal device determines, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET configured with multiple TCI states.

For the description of the detection mode, reference may be made to the relevant description in Embodiment 1, and details are not repeated here.

Optionally, in an implementation of Embodiment 2, when the repeat configuration information of the target CORESET does not indicate to perform repeated PDCCH transmission, the terminal device determines to use the first method to detect the PDCCH in the target CORESET, as shown in FIG. 7 . As shown in A; when the repetition configuration information of the target CORESET indicates to perform repeated PDCCH transmission, the terminal device determines to use the second method to detect the PDCCH in the target CORESET, as shown in B in FIG. 7 .

Optionally, in an implementation of Embodiment 2, when the repeat configuration information of the target CORESET does not indicate to perform repeated PDCCH transmission, the terminal device determines to use the third method to detect the PDCCH in the target CORESET, as shown in FIG. 7 . As shown in C; when repeating the PDCCH transmission is indicated in the repeat configuration information of the target CORESET, the terminal device determines to use the second method to detect the PDCCH in the target CORESET, as shown in B in FIG. 7 .

Specifically, in Embodiment 2, when the repetition configuration information of the target CORESET indicates to perform repeated PDCCH transmission, the terminal device uses the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively, and the different PDCCHs occupy different PDCCHs. time domain resource or frequency domain resource or PDCCH candidate (candidate). For example, the terminal device uses the first TCI state to detect the first PDCCH, and uses the second TCI state to detect the second PDCCH. The first PDCCH and the second PDCCH carry the same control information and occupy different OFDM symbols, as shown in FIG. 7 . shown in B.

Optionally, in Embodiment 2, the repetition configuration information of the target CORESET is further used to indicate the manner in which the PDCCH in the target CORESET performs repeated transmission. For example, the repeat configuration information of the target CORESET may include two bits of information, one of which indicates that PDCCH repeat transmission is not performed, one bit indicates that different time domain resources are used for PDCCH repeat transmission, and one bit indicates that different frequency domain resources are used. Repeated transmission of PDCCH is performed, and another bit is reserved.

Optionally, in Embodiment 2, the terminal device performs PDCCH detection in the target CORESET in a deterministic manner.

For the specific detection method, refer to the relevant description in Embodiment 1, and details are not repeated here.

Embodiment 2 reuses the repeated configuration information of the target CORESET to indicate the transmission mode of the PDCCH, and does not require additional signaling overhead, so that the terminal can perform detection in a corresponding manner, avoiding erroneous detection of the PDCCH.

In Embodiment 3, the network device indicates the first configuration information and multiple TCI states corresponding to the target CORESET. Wherein, the first configuration information is the configuration of the search space associated with the target CORESET.

In one embodiment, the network device may include indication information of the TCI state index in the configuration information of the search space associated with the target CORESET, which is used to indicate the TCI state used by the PDCCH in the search space among the multiple TCI states. index. Different search spaces associated with the target CORESET can be configured with the same TCI state index or with different TCI state indexes; the same number of TCI state indexes can also be configured with different numbers of TCI state indexes. For example, the number can be 0, 1 or 2.

In Embodiment 3, the terminal device determines, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET configured with multiple TCI states.

Optionally, in an implementation manner of Embodiment 3, the terminal device may use a combination of the following manners to determine the detection manner adopted by the PDCCH in the target CORESET configured with multiple TCI states:

Manner 1, when the configuration of the search space associated with the target CORESET does not indicate the TCI state, the terminal device determines to use the first method to detect the PDCCH in the target CORESET.

In the second way, when the configuration of the search space associated with the target CORESET does not indicate the TCI state, the terminal device determines to use the third way to detect the PDCCH in the target CORESET.

Mode 3: When the configuration of each search space associated with the target CORESET indicates one TCI state, and the TCI states indicated in the configurations of different search spaces are not exactly the same, the terminal device determines to use the second mode to detect the TCI status in the target CORESET. PDCCH. For example, the configurations of the first search space and the second search space associated with the target CORESET both indicate a TCI state, wherein the configuration of the first search space indicates TCI state 0, and the configuration of the second search space indicates the TCI state 1.

Mode 4: When the configuration of each search space associated with the target CORESET indicates one TCI state, and the TCI states indicated in the configurations of different search spaces are the same, the terminal device determines to use the third mode to detect the PDCCH in the target CORESET . For example, TCI state 0 is indicated in the configuration of all search spaces associated with the target CORESET.

Manner 5: When two TCI states are indicated in the configuration of the search space associated with the target CORESET, the terminal device determines to use the first method to detect the PDCCH in the target CORESET. For example, TCI state 0 and TCI state 1 are indicated in the configuration of all search spaces associated with the target CORESET.

Optionally, in an implementation manner of Embodiment 3, the terminal device detects the PDCCH in the corresponding search space by using the TCI state indicated in the configuration of the search space associated with the target CORESET. For example, if the configuration of the first search space associated with the target CORESET indicates TCI state 0, and the configuration of the second search space indicates TCI state 1, the terminal device uses TCI state 0 to detect the PDCCH in the first search space, and uses TCI state 0 to detect the PDCCH in the first search space. State 1 detects the PDCCH in the second search space.

Optionally, in an implementation manner of Embodiment 3, when the configuration of each search space associated with the target CORESET indicates one TCI state, and the TCI states indicated in the configurations of different search spaces are not completely the same, Different PDCCHs carrying the same information are respectively carried in the search spaces configured with different TCI states. At this time, in the search space configured with different TCI states, the terminal device uses the configured TCI states to detect different PDCCHs carrying the same information respectively.

Optionally, in Embodiment 3, the terminal device performs PDCCH detection in the target CORESET in a deterministic manner.

Embodiment 3 reuses the configuration of each search space associated with the target CORESET to indicate the transmission mode of the PDCCH, and no additional signaling overhead is required, so that the terminal can perform detection in a corresponding manner, avoiding erroneous detection of the PDCCH.

In Embodiment 4, the network device indicates the first configuration information and multiple TCI states corresponding to the target CORESET. Wherein, the first configuration information is the PDSCH transmission mode configuration on the BWP where the target CORESET is located.

Specifically, the network device may configure a corresponding transmission mode for PDSCH on a BWP through physical layer signaling or high layer signaling. For example, the transmission mode is to use multiple TCI states to detect the same PDSCH. At this time, the terminal device may consider that the PDCCH on the same BWP also adopts a similar transmission mode, and thus adopts the first mode for detection.

In Embodiment 4, the terminal device determines, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET configured with multiple TCI states.

Optionally, in an implementation of Embodiment 4, when the transmission mode configuration of the PDSCH on the BWP where the target CORESET is located indicates that multiple TCI states are used to detect the same PDSCH, the terminal device determines to use the first method to detect the target CORESET. Otherwise, the terminal device determines to use the second method to detect the PDCCH in the target CORESET.

Optionally, in another implementation of Embodiment 4, when the transmission mode configuration of the PDSCH on the BWP where the target CORESET is located indicates that multiple TCI states are used to detect the same PDSCH, the terminal device determines to use the first method to detect the target. The PDCCH in the CORESET; otherwise, the terminal device determines to use the third method to detect the PDCCH in the target CORESET.

Specifically, in Embodiment 4, the network device may associate multiple TCI states for each DMRS port of the PDSCH to indicate that the terminal device needs to use multiple TCI states to detect the same PDSCH at this time. Therefore, "using multiple TCI states to detect the same PDSCH" in the above judgment condition may also be replaced with "each DMRS port of the PDSCH is associated with multiple TCI states".

Optionally, in Embodiment 4, the terminal device performs PDCCH detection in the target CORESET in a deterministic manner.

Embodiment 4 utilizes the consistency of the PDSCH and PDCCH transmission schemes and application scenarios, reuses the PDSCH transmission mode configuration to indicate the PDCCH transmission mode, and does not require additional signaling overhead, so the terminal can use the corresponding method for detection, avoiding the need for Error detection of PDCCH.

Therefore, in this embodiment of the present application, the terminal device may determine, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET configured with multiple TCI states. That is, when the terminal device does not know the purpose and application scenario of the currently configured multiple TCI states, it can detect the PDCCH by using the reception mode corresponding to the transmission mode on the network side according to other configurations, thereby improving the detection of the PDCCH. performance. It can effectively avoid the problem that the PDCCH cannot be correctly demodulated due to the wrong way of PDCCH detection.

The method embodiments of the present application are described in detail above with reference to FIGS. 5 to 7 , and the device embodiments of the present application are described in detail below with reference to FIGS. 8 to 12 . It should be understood that the device embodiments and the method embodiments correspond to each other, and are similar For the description, refer to the method embodiment.

FIG. 8 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in Figure 8, the terminal device 300 includes:

The processing unit 310 is configured to determine, according to the first configuration information, the detection mode adopted by the physical downlink control channel PDCCH in the target control resource set CORESET, wherein the target CORESET is configured with multiple transmission configurations indicating TCI states;

Among them, the detection method is one of the following three methods:

Optionally, the first configuration information includes at least one of the following:

Time domain resource configuration information of the target CORESET;

Duplicate configuration information of the target CORESET;

The configuration of the search space associated with this target CORESET;

The transmission mode configuration of the physical downlink shared channel PDSCH on the bandwidth part BWP where the target CORESET is located.

Optionally, the first configuration information is time domain resource configuration information of the target CORESET;

The processing unit 310 is specifically used for:

In the case where the time-domain resource configuration information indicates a group of time-domain resources for sending PDCCH, determine to use the first method to detect the PDCCH in the target CORESET, or determine to use the third method to detect the PDCCH in the target CORESET the PDCCH;

In the case where the time domain resource configuration information indicates multiple groups of time domain resources for sending PDCCH, it is determined to use the second method to detect the PDCCH in the target CORESET.

Optionally, the terminal device 300 further includes: a communication unit 320, wherein:

In the case where the time-domain resource configuration information indicates multiple sets of time-domain resources for sending PDCCH, the communication unit 320 is configured to use the multiple TCI states to detect on the multiple sets of time-domain resources for sending PDCCH respectively Different PDCCHs carrying the same information in the target CORESET.

Optionally, in the case where multiple groups of time-domain resources used for sending PDCCH are indicated in the time-domain resource configuration information, different groups of time-domain resources used for sending PDCCH occupy different orthogonal frequency division multiplexing in the same time slot. OFDM symbols, or different groups of time domain resources used for transmitting PDCCH occupy adjacent downlink time slots.

Optionally, the first configuration information is the repeated configuration information of the target CORESET;

The processing unit 310 is specifically used for:

In the case that the repeated transmission of the PDCCH is not indicated by the repeated configuration information, it is determined that the first method is used to detect the PDCCH in the target CORESET, or it is determined that the third method is used to detect the PDCCH in the target CORESET;

In the case that the repeated PDCCH transmission is indicated by the repeated configuration information, it is determined to use the second method to detect the PDCCH in the target CORESET.

In the case that the repeated PDCCH transmission is indicated by the repeated configuration information, the communication unit is configured to detect different PDCCHs carrying the same information in the target CORESET by using the multiple TCI states;

Optionally, the repeat configuration information is further used to indicate a manner of repeating transmission of the PDCCH in the target CORESET.

Optionally, the first configuration information is the configuration of the search space associated with the target CORESET;

The processing unit 310 determines, according to the first configuration information, a detection method adopted by the PDCCH in the target CORESET, including at least one of the following:

In the case that the configuration of the search space associated with the target CORESET does not indicate the TCI state, the processing unit 310 determines to use the first method to detect the PDCCH in the target CORESET, or the processing unit 310 determines to use the third method Detect the PDCCH in the target CORESET;

In the case that the configuration of each search space associated with the target CORESET indicates a TCI state, and the TCI states indicated in the configurations of different search spaces are not exactly the same, the processing unit 310 determines to use the second method to detect the target PDCCH in CORESET;

In the case where the configuration of each search space associated with the target CORESET indicates a TCI state, and the TCI states indicated in the configurations of different search spaces are the same, the processing unit 310 determines to use the third method to detect the target CORESET PDCCH in ;

When multiple TCI states are indicated in the configuration of the search space associated with the target CORESET, the processing unit 310 determines to use the first method to detect the PDCCH in the target CORESET.

When the TCI state is indicated in the configuration of the search space associated with the target CORESET, the communication unit 320 is configured to detect the PDCCH in the corresponding search space using the TCI state indicated in the configuration of the search space associated with the target CORESET.

Optionally, in the case where the configuration of each search space associated with the target CORESET indicates a TCI state, and the TCI states indicated in the configurations of different search spaces are not exactly the same, the search spaces of different TCI states are configured. Different PDCCHs carrying the same information are respectively carried.

Optionally, the terminal device 300 further includes:

The communication unit 320 is configured to receive second configuration information, where the second configuration information is used to configure the index of the adopted TCI state for the search space associated with the target CORESET.

Optionally, the first configuration information is the PDSCH transmission mode configuration on the BWP where the target CORESET is located;

The processing unit 310 is specifically used for:

In the case where the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, it is determined that the first mode is used to detect the PDCCH in the target CORESET;

If the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, determine to use the second mode to detect the PDCCH in the target CORESET, or determine to use the third mode to detect the PDCCH in the target CORESET PDCCH.

Optionally, when the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, each demodulation reference signal DMRS port of the PDSCH is associated with the multiple TCI states.

Optionally, the terminal device 300 further includes:

The communication unit 320 is configured to perform control in the PDCCH after combining the PDCCH signals respectively received in the multiple TCI states when the terminal device determines to use the second method to detect the PDCCH in the target CORESET detection of information.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip. The aforementioned processing unit may be one or more processors.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of the various units in the terminal device 300 are respectively for realizing the method shown in FIG. 5 . The corresponding process of the terminal device in 200 is not repeated here for brevity.

FIG. 9 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. As shown in FIG. 9, the network device 400 includes:

The communication unit 410 is configured to send first configuration information and multiple transmission configuration indication TCI states of the target control resource set CORESET to the terminal device, wherein the first configuration information is used by the terminal device to determine the physical downlink control in the target CORESET The detection method adopted by the channel PDCCH;

Among them, the detection method is one of the following three methods:

Time domain resource configuration information of the target CORESET;

Duplicate configuration information of the target CORESET;

The configuration of the search space associated with this target CORESET;

Optionally, the first configuration information is time domain resource configuration information of the target CORESET, and the time domain resource configuration information indicates one or more groups of time domain resources for sending PDCCH.

Optionally, the first configuration information is repeated configuration information of the target CORESET, and the repeated configuration information indicates whether to perform repeated PDCCH transmission.

Optionally, the first configuration information is a configuration of a search space associated with the target CORESET, and the configuration of the search space includes N TCI states, where N=0, or N=1, or N=2.

Optionally, the first configuration information is a PDSCH transmission mode configuration on the BWP where the target CORESET is located, and the transmission mode configuration is used to indicate that multiple TCI states are used to detect the same PDSCH.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip.

It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 400 are for realizing the method shown in FIG. 5 , respectively. The corresponding process of the network device in 200 is not repeated here for brevity.

FIG. 10 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application. The communication device 500 shown in FIG. 10 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10 , the communication device 500 may further include a memory 520 . The processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application.

The memory 520 may be a separate device independent of the processor 510 , or may be integrated in the processor 510 .

Optionally, as shown in FIG. 10 , the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by a device.

Among them, the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 500 may specifically be a network device in this embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For brevity, details are not repeated here. .

Optionally, the communication device 500 may specifically be the mobile terminal/terminal device of the embodiments of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and will not be repeated here.

FIG. 11 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The apparatus 600 shown in FIG. 11 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11 , the apparatus 600 may further include a memory 620 . The processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, the apparatus 600 may further include an input interface 630 . The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Optionally, the apparatus 600 may further include an output interface 640 . The processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the apparatus can be applied to the network equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application, which are not repeated here for brevity.

Optionally, the apparatus can be applied to the mobile terminal/terminal equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the mobile terminal/terminal equipment in each method of the embodiments of the present application. For brevity, here No longer.

Optionally, the device mentioned in the embodiment of the present application may also be a chip. For example, it can be a system-on-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.

FIG. 12 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 12 , the communication system 700 includes a terminal device 710 and a network device 720.

The terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and are not repeated here for brevity.

Embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.

The embodiments of the present application also provide a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application. The corresponding process, for the sake of brevity, will not be repeated here.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method for channel transmission, comprising:

The terminal device determines, according to the first configuration information, the detection mode adopted by the physical downlink control channel PDCCH in the target control resource set CORESET, wherein the target CORESET is configured with multiple transmission configurations to indicate the TCI state;

Wherein, the detection method is one of the following three methods:

The first way is to use the multiple TCI states to detect each PDCCH in the target CORESET;

The second way is to use the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively;

The third way is to detect each PDCCH in the target CORESET by using one of the multiple TCI states.
The method of claim 1, wherein the first configuration information includes at least one of the following:

Time domain resource configuration information of the target CORESET;

The repeated configuration information of the target CORESET;

the configuration of the search space associated with the target CORESET;

The transmission mode configuration of the physical downlink shared channel PDSCH on the bandwidth part BWP where the target CORESET is located.
The method according to claim 1 or 2, wherein the first configuration information is time domain resource configuration information of the target CORESET;

The terminal device determines, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET, including:

In the case where the time domain resource configuration information indicates a set of time domain resources for sending PDCCH, the terminal device determines to use the first method to detect the PDCCH in the target CORESET, or the terminal device determines Determine to use the third method to detect the PDCCH in the target CORESET;

In the case where the time domain resource configuration information indicates multiple sets of time domain resources for sending PDCCH, the terminal device determines to use the second manner to detect the PDCCH in the target CORESET.
The method of claim 3, wherein the method further comprises:

In the case where multiple sets of time domain resources used for sending PDCCH are indicated in the time domain resource configuration information, the terminal device adopts the multiple TCI states on the multiple sets of time domain resources used for sending PDCCH respectively. Different PDCCHs carrying the same information in the target CORESET are detected.
The method according to claim 3 or 4, wherein, in the case that multiple groups of time domain resources used for sending PDCCH are indicated in the time domain resource configuration information, different groups of time domain resources used for sending PDCCH are occupied Different orthogonal frequency division multiplexing OFDM symbols in the same time slot, or different groups of time domain resources used for transmitting PDCCH occupy adjacent downlink time slots.
The method according to claim 1 or 2, wherein the first configuration information is repeated configuration information of the target CORESET;

The terminal device determines, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET, including:

In the case where repeated PDCCH transmission is not indicated by the repeat configuration information, the terminal device determines to use the first method to detect the PDCCH in the target CORESET, or the terminal device determines to use the third method detecting the PDCCH in the target CORESET;

In the case that the repeated PDCCH transmission is indicated by the repetition configuration information, the terminal device determines to use the second manner to detect the PDCCH in the target CORESET.
The method of claim 6, wherein the method further comprises:

In the case that the repeated PDCCH transmission is indicated by the repeated configuration information, the terminal device uses the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively;

The different PDCCHs occupy different time domain resources, or the different PDCCHs occupy different frequency domain resources, or the different PDCCHs occupy different PDCCH candidates.
The method according to claim 6 or 7, wherein the repeat configuration information is further used to indicate a manner of repeating transmission of the PDCCH in the target CORESET.
The method according to claim 1 or 2, wherein the first configuration information is a configuration of a search space associated with the target CORESET;

The terminal device determines, according to the first configuration information, a detection mode adopted by the PDCCH in the target CORESET, including at least one of the following:

In the case where the configuration of the search space associated with the target CORESET does not indicate the TCI state, the terminal device determines to use the first method to detect the PDCCH in the target CORESET, or the terminal device determines to use the first method to detect the PDCCH in the target CORESET. The third method detects the PDCCH in the target CORESET;

In the case where the configuration of each search space associated with the target CORESET indicates one TCI state, and the TCI states indicated in the configurations of different search spaces are not exactly the same, the terminal device determines to use the second method to detect the PDCCH in the target CORESET;

When the configuration of each search space associated with the target CORESET indicates one TCI state, and the TCI states indicated in the configurations of different search spaces are all the same, the terminal device determines to use the third method to detect all the TCI states. PDCCH in the target CORESET;

In the case that multiple TCI states are indicated in the configuration of the search space associated with the target CORESET, the terminal device determines to use the first manner to detect the PDCCH in the target CORESET.
The method of claim 9, wherein the method further comprises:

When the TCI state is indicated in the configuration of the search space associated with the target CORESET, the terminal device detects the PDCCH in the corresponding search space by using the TCI state indicated in the configuration of the search space associated with the target CORESET.
The method according to claim 9 or 10, wherein a TCI state is indicated in the configuration of each search space associated with the target CORESET, and the TCI states indicated in the configurations of different search spaces are not exactly the same In this case, different PDCCHs carrying the same information are respectively carried in the search spaces configured with different TCI states.
The method according to any one of claims 9 to 11, wherein the method further comprises:

The terminal device receives second configuration information, where the second configuration information is used to configure the index of the adopted TCI state for the search space associated with the target CORESET.
The method according to claim 1 or 2, wherein the first configuration information is a PDSCH transmission mode configuration on the BWP where the target CORESET is located;

The terminal device determines, according to the first configuration information, the detection mode adopted by the PDCCH in the target CORESET, including:

In the case where the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, the terminal device determines to use the first mode to detect the PDCCH in the target CORESET;

In the case that the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, the terminal device determines to use the second mode to detect the PDCCH in the target CORESET, or the terminal device determines The third method is used to detect the PDCCH in the target CORESET.
The method according to claim 13, wherein in the case that the transmission mode configuration instructs to use multiple TCI states to detect the same PDSCH, each demodulation reference signal DMRS port of the PDSCH is associated with the multiple TCI states are described.
The method of any one of claims 1 to 14, wherein,

In the third manner, one TCI state among the multiple TCI states is the first TCI state among the multiple TCI states, or, one TCI state among the multiple TCI states is the The TCI state with the lowest TCI state index among multiple TCI states.
The method according to any one of claims 1 to 15, wherein the method further comprises:

In the case that the terminal device determines to use the second method to detect the PDCCH in the target CORESET, the terminal device combines the PDCCH signals respectively received in the multiple TCI states, and then performs the PDCCH Detection of control information in .
A method for channel transmission, comprising:

The network device sends first configuration information and multiple transmission configurations of the target control resource set CORESET to indicate the TCI state to the terminal device, wherein the first configuration information is used by the terminal device to determine the physical downlink control channel in the target CORESET The detection method adopted by the PDCCH;

Wherein, the detection method is one of the following three methods:

The first way is to use the multiple TCI states to detect each PDCCH in the target CORESET;

The second way is to use the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively;

The third way is to detect each PDCCH in the target CORESET by using one of the multiple TCI states.
The method of claim 17, wherein the first configuration information includes at least one of the following:

Time domain resource configuration information of the target CORESET;

The repeated configuration information of the target CORESET;

the configuration of the search space associated with the target CORESET;

The transmission mode configuration of the physical downlink shared channel PDSCH on the bandwidth part BWP where the target CORESET is located.
The method according to claim 17 or 18, wherein the first configuration information is time domain resource configuration information of the target CORESET, and the time domain resource configuration information indicates that one or more groups are used for Time domain resource for sending PDCCH.
The method according to claim 17 or 18, wherein the first configuration information is repetition configuration information of the target CORESET, and the repetition configuration information indicates whether to perform PDCCH repetition transmission.
The method of claim 20, wherein the repeat configuration information is further used to indicate a manner of repeating transmission of the PDCCH in the target CORESET.
The method according to claim 17 or 18, wherein the first configuration information is a configuration of a search space associated with the target CORESET, and the configuration of the search space includes N TCI states, where N =0, or N=1, or N=2.
The method according to claim 17 or 18, wherein the first configuration information is a PDSCH transmission mode configuration on the BWP where the target CORESET is located, and the transmission mode configuration is used to indicate that multiple TCI states are used The detection of the same PDSCH is performed.
The method of any one of claims 17 to 23, wherein,

In the third manner, one TCI state among the multiple TCI states is the first TCI state among the multiple TCI states, or, one TCI state among the multiple TCI states is the The TCI state with the lowest TCI state index among multiple TCI states.
A terminal device, characterized in that it includes:

a processing unit, configured to determine, according to the first configuration information, the detection mode adopted by the physical downlink control channel PDCCH in the target control resource set CORESET, wherein the target CORESET is configured with multiple transmission configurations indicating TCI states;

Wherein, the detection method is one of the following three methods:

The first way is to use the multiple TCI states to detect each PDCCH in the target CORESET;

The second way is to use the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively;

The third way is to detect each PDCCH in the target CORESET by using one of the multiple TCI states.
The terminal device according to claim 25, wherein the first configuration information comprises at least one of the following:

Time domain resource configuration information of the target CORESET;

The repeated configuration information of the target CORESET;

the configuration of the search space associated with the target CORESET;

The transmission mode configuration of the physical downlink shared channel PDSCH on the bandwidth part BWP where the target CORESET is located.
The terminal device according to claim 25 or 26, wherein the first configuration information is time domain resource configuration information of the target CORESET;

The processing unit is specifically used for:

In the case where the time-domain resource configuration information indicates a set of time-domain resources for sending PDCCH, determine to use the first method to detect the PDCCH in the target CORESET, or determine to use the third method to detect the PDCCH in the target CORESET;

In the case where the time domain resource configuration information indicates multiple sets of time domain resources for sending the PDCCH, it is determined to use the second manner to detect the PDCCH in the target CORESET.
The terminal device according to claim 27, wherein the terminal device further comprises: a communication unit, wherein:

In the case that multiple sets of time domain resources used for sending PDCCH are indicated in the time domain resource configuration information, the communication unit is configured to use the multiple TCI states in the multiple sets of time domain resources used for sending PDCCH respectively Different PDCCHs carrying the same information in the target CORESET are detected on the resource.
The terminal device according to claim 27 or 28, wherein, in the case where multiple groups of time domain resources used for sending PDCCH are indicated in the time domain resource configuration information, different groups of time domain resources used for sending PDCCH Different orthogonal frequency division multiplexing OFDM symbols in the same time slot are occupied, or different groups of time domain resources used for transmitting PDCCH occupy adjacent downlink time slots.
The terminal device according to claim 25 or 26, wherein the first configuration information is repeated configuration information of the target CORESET;

The processing unit is specifically used for:

In the case where the repeated PDCCH transmission is not indicated by the repetition configuration information, it is determined to use the first method to detect the PDCCH in the target CORESET, or it is determined to use the third method to detect the PDCCH in the target CORESET ;

In the case that the repeated PDCCH transmission is indicated by the repetition configuration information, it is determined to use the second manner to detect the PDCCH in the target CORESET.
The terminal device according to claim 30, wherein the terminal device further comprises: a communication unit, wherein:

In the case that the repeated transmission of the PDCCH is indicated by the repeated configuration information, the communication unit is configured to detect different PDCCHs carrying the same information in the target CORESET respectively by using the multiple TCI states;

The different PDCCHs occupy different time domain resources, or the different PDCCHs occupy different frequency domain resources, or the different PDCCHs occupy different PDCCH candidates.
The terminal device according to claim 30 or 31, wherein the repeat configuration information is further used to indicate a manner of repeating transmission of the PDCCH in the target CORESET.
The terminal device according to claim 25 or 26, wherein the first configuration information is a configuration of a search space associated with the target CORESET;

The processing unit determines, according to the first configuration information, a detection method adopted by the PDCCH in the target CORESET, including at least one of the following:

In the case that the configuration of the search space associated with the target CORESET does not indicate the TCI state, the processing unit determines to use the first method to detect the PDCCH in the target CORESET, or the processing unit determines to use the first method to detect the PDCCH in the target CORESET. The third method detects the PDCCH in the target CORESET;

In the case that the configuration of each search space associated with the target CORESET indicates one TCI state, and the TCI states indicated in the configurations of different search spaces are not exactly the same, the processing unit determines to use the second method to detect the PDCCH in the target CORESET;

In the case that the configuration of each search space associated with the target CORESET indicates one TCI state, and the TCI states indicated in the configurations of different search spaces are all the same, the processing unit determines to use the third method to detect all the TCI states. PDCCH in the target CORESET;

In the case that multiple TCI states are indicated in the configuration of the search space associated with the target CORESET, the processing unit determines to use the first manner to detect the PDCCH in the target CORESET.
The terminal device according to claim 33, wherein the terminal device further comprises: a communication unit, wherein:

When the TCI state is indicated in the configuration of the search space associated with the target CORESET, the communication unit is configured to detect the PDCCH in the corresponding search space by using the TCI state indicated in the configuration of the search space associated with the target CORESET .
The terminal device according to claim 33 or 34, wherein one TCI state is indicated in the configuration of each search space associated with the target CORESET, and the TCI states indicated in the configurations of different search spaces are not exactly the same In the case of , different PDCCHs carrying the same information are respectively carried in the search spaces configured with different TCI states.
The terminal device according to any one of claims 33 to 35, wherein the terminal device further comprises:

A communication unit, configured to receive second configuration information, where the second configuration information is used to configure the index of the adopted TCI state for the search space associated with the target CORESET.
The terminal device according to claim 25 or 26, wherein the first configuration information is a PDSCH transmission mode configuration on the BWP where the target CORESET is located;

The processing unit is specifically used for:

In the case where the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, it is determined that the first mode is used to detect the PDCCH in the target CORESET;

In the case where the transmission mode configuration indicates that multiple TCI states are used to detect the same PDSCH, determine to use the second mode to detect the PDCCH in the target CORESET, or determine to use the third mode to detect the PDCCH in the target CORESET Describe the PDCCH in the target CORESET.
The terminal device according to claim 37, wherein in the case that the transmission mode configuration instructs to use multiple TCI states to detect the same PDSCH, each demodulation reference signal DMRS port of the PDSCH is associated with the plurality of TCI states.
The terminal device according to any one of claims 25 to 38, wherein,

In the third manner, one TCI state among the multiple TCI states is the first TCI state among the multiple TCI states, or, one TCI state among the multiple TCI states is the The TCI state with the lowest TCI state index among multiple TCI states.
The terminal device according to any one of claims 25 to 39, wherein the terminal device further comprises:

a communication unit, configured to combine the PDCCH signals respectively received in the multiple TCI states when the terminal device determines to use the second manner to detect the PDCCH in the target CORESET, and then perform the Detection of control information in PDCCH.
A network device, characterized in that it includes:

A communication unit, configured to send first configuration information and multiple transmission configuration indication TCI states of the target control resource set CORESET to the terminal device, wherein the first configuration information is used by the terminal device to determine the physical parameters in the target CORESET The detection method adopted by the downlink control channel PDCCH;

Wherein, the detection method is one of the following three methods:

The first way is to use the multiple TCI states to detect each PDCCH in the target CORESET;

The second way is to use the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET respectively;

The third way is to detect each PDCCH in the target CORESET by using one of the multiple TCI states.
The network device according to claim 41, wherein the first configuration information comprises at least one of the following:

Time domain resource configuration information of the target CORESET;

The repeated configuration information of the target CORESET;

the configuration of the search space associated with the target CORESET;

The transmission mode configuration of the physical downlink shared channel PDSCH on the bandwidth part BWP where the target CORESET is located.
The network device according to claim 41 or 42, wherein the first configuration information is time domain resource configuration information of the target CORESET, and the time domain resource configuration information indicates one or more groups of Time domain resources for sending PDCCH.
The network device according to claim 41 or 42, wherein the first configuration information is repeated configuration information of the target CORESET, and the repeated configuration information indicates whether to perform repeated PDCCH transmission.
The network device according to claim 44, wherein the repeat configuration information is further used to indicate a manner of repeating transmission of the PDCCH in the target CORESET.
The network device according to claim 41 or 42, wherein the first configuration information is a configuration of a search space associated with the target CORESET, and the configuration of the search space includes N TCI states, wherein N=0, or N=1, or N=2.
The network device according to claim 41 or 46, wherein the first configuration information is a PDSCH transmission mode configuration on the BWP where the target CORESET is located, and the transmission mode configuration is used to indicate that multiple TCIs are used state to detect the same PDSCH.
The network device according to any one of claims 41 to 47, wherein,

In the third manner, one TCI state among the multiple TCI states is the first TCI state among the multiple TCI states, or, one TCI state among the multiple TCI states is the The TCI state with the lowest TCI state index among multiple TCI states.
A terminal device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 16. one of the methods described.
A network device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 17 to 24. one of the methods described.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 16 .
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 17 to 24.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 16.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 17 to 24.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 1 to 16.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 17 to 24.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 16.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 17 to 24.