WO2021057903A1 - 物理下行共享信道处理的方法及设备 - Google Patents

物理下行共享信道处理的方法及设备 Download PDF

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Publication number
WO2021057903A1
WO2021057903A1 PCT/CN2020/117735 CN2020117735W WO2021057903A1 WO 2021057903 A1 WO2021057903 A1 WO 2021057903A1 CN 2020117735 W CN2020117735 W CN 2020117735W WO 2021057903 A1 WO2021057903 A1 WO 2021057903A1
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Prior art keywords
pdsch
group
information
nfi
pdcch
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PCT/CN2020/117735
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English (en)
French (fr)
Inventor
李娜
曾超君
沈晓冬
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维沃移动通信有限公司
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Publication of WO2021057903A1 publication Critical patent/WO2021057903A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the embodiments of the present disclosure relate to the field of communication technologies, and in particular to a method and device for processing a physical downlink shared channel.
  • Hybrid automatic repeat request acknowledgement Hybrid automatic repeat request acknowledgement
  • HARQ-ACK Hybrid automatic repeat request acknowledgement
  • the UE needs to determine the PDSCH corresponding to the PDSCH group and new acknowledgement feedback group indication (New ACK-Feedback Group Indicator) , NFI) value or Downlink Assignment Index (DAI), these values are all realized by scheduling the PDCCH indicator of the PDSCH.
  • new acknowledgement feedback group indication New ACK-Feedback Group Indicator
  • NFI new acknowledgement feedback group indication
  • DAI Downlink Assignment Index
  • An objective of the embodiments of the present disclosure is to provide a method and device for processing a physical downlink shared channel to solve the problem of how to determine the PDSCH group to which the PDSCH belongs, or the NFI or DAI corresponding to the PDSCH.
  • embodiments of the present disclosure provide a method for processing a physical downlink shared channel, including:
  • the first information determine the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH;
  • the first PDSCH is a PDSCH without a corresponding physical downlink control channel PDCCH;
  • the first information includes at least one of the following:
  • the embodiments of the present disclosure also provide a terminal, including:
  • the determining module is configured to determine, according to the first information, the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH;
  • the first PDSCH is a PDSCH without corresponding PDCCH
  • the first information includes at least one of the following:
  • embodiments of the present disclosure also provide a terminal, including: a processor, a memory, and a program stored on the memory and capable of running on the processor, the program being executed when the processor is executed The steps of the method for processing the physical downlink shared channel as described in the first aspect.
  • the embodiments of the present disclosure also provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the physical downlink as described in the first aspect is implemented.
  • the steps of the shared channel processing method are not limited to:
  • the PDSCH group to which the PDSCH without corresponding PDCCH belongs, or the NFI or DAI corresponding to the PDSCH can be determined according to the first information, so as to prepare for subsequent HARQ-ACK triggering and transmission, thereby improving the effectiveness of the communication system Sex.
  • Figures 1a and 1b are schematic diagrams of the UE determining the HARQ-ACK feedback of a PDSCH scheduled with a non-numerical value k1;
  • FIGS. 2a and 2b are schematic diagrams of HARQ-ACK triggering and transmission based on PDSCH group
  • Figure 3 is a schematic diagram of the impact of NFI flipping on HARQ-ACK triggering and feedback
  • Figure 4 is a schematic diagram of the architecture of a wireless communication system
  • FIG. 5 is a schematic diagram of a method for processing a physical downlink shared channel according to an embodiment of the disclosure
  • FIG. 6 is a schematic diagram of HARQ-ACK feedback in Embodiment 1 of an embodiment of the disclosure.
  • FIG. 7 is a schematic diagram of HARQ-ACK feedback in the second implementation manner of an embodiment of the disclosure.
  • FIG. 8 is a schematic diagram of HARQ-ACK feedback in Embodiment 3 of an embodiment of the disclosure.
  • FIG. 9 is a schematic diagram of HARQ-ACK feedback in Embodiment 4 of an embodiment of the disclosure.
  • FIG. 10 is a schematic diagram of HARQ-ACK feedback in Embodiment 5 of an embodiment of the disclosure.
  • FIG. 11 is one of schematic diagrams of a terminal according to an embodiment of the disclosure.
  • FIG. 12 is a second schematic diagram of a terminal according to an embodiment of the disclosure.
  • the unlicensed band can be used as a supplement to the licensed band (Licensed Band) to help operators expand their services.
  • RAT Radio Access Technology
  • Wi-Fi Wireless Fidelity
  • LTE Long Term Evolution
  • Authorized Auxiliary Access Authorized Auxiliary Access
  • a transmission node When a transmission node needs to send information, it is required to perform LBT on the designated wireless channel first, and perform Energy Detection (ED) on the surrounding wireless transmission environment. When the energy is lower than a certain threshold, the channel is judged to be idle. Before you can start the transfer. Otherwise, it is judged that the channel is busy and the transmission node cannot send.
  • the transmission node may be a base station, a terminal, a Wi-Fi access point (Access Point, AP), etc. After the transmission node starts transmission, the occupied channel time cannot exceed MCOT.
  • the network side In a wireless communication system based on a shared channel, the network side reasonably allocates designated shared resources to each terminal, and instructs the terminal to use the designated shared resource to perform corresponding sending/receiving operations through Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the resource allocation process is downlink scheduling. After the terminal completes the corresponding reception operation, it needs to feed back the reception result to the network side so that the network side can perform subsequent downlink scheduling processing.
  • the feedback can be Called HARQ-ACK.
  • the network-side base station (gNB) in the DCI indicates to the UE the time-frequency resources and data transmission corresponding to the downlink transmission, and also indicates the corresponding information.
  • the physical uplink control channel (PUCCH) resource situation used for HARQ-ACK transmission including the PUCCH resource number (for example, PUCCH resource indicator (PRI)), and the time slot of the PUCCH resource relative to the downlink PDSCH transmission The offset of the time slot.
  • PUCCH resource number for example, PUCCH resource indicator (PRI)
  • the radio resource control When indicating the time slot offset of the PUCCH resource, the radio resource control (Radio Resource Control, RRC) first configures a time slot offset table dl-DataToUL-ACK for the UE semi-statically, which is a sequence of available time slot offsets , And then use the PDSCH-to-HARQ-timing-indicator field in the DCI to indicate a certain index in the semi-statically configured sequence as the actual PUCCH resource slot offset.
  • RRC Radio Resource Control
  • HARQ-ACK codebook codebook
  • HARQ-ACK Codebook solution NR version 15 (Release 15, Re-15) adopts two HARQ-ACK Codebook schemes: semi-static codebook (Type-1) and dynamic codebook (Type-2):
  • the semi-static codebook is based on the feedback timing (Timing) configuration table (that is, the aforementioned time slot offset table dl-DataToUL-ACK) and HARQ-ACK feedback time, for each possible PDSCH time domain at each possible scheduling time
  • the allocation (based on a certain configuration in the feedback Timing configuration table, the HARQ-ACK feedback time corresponding to this PDSCH time domain allocation is exactly the time when the HARQ-ACK bit sequence is reported).
  • Corresponding feedback bits are reserved.
  • the corresponding feedback bit is set to Negative Acknowledgement (NACK), otherwise the corresponding PDSCH transmission decoding is allocated according to this PDSCH time domain As a result, the corresponding feedback bit is set;
  • the dynamic codebook counts the downlink assignment index (DAI) of the actually scheduled PDSCH transmission/SPS PDSCH release indication, and reserves feedback bits for each actually scheduled PDSCH/SPS PDSCH release. If the UE infers from other detected DAIs that the PDSCH allocation instructions or SPS PDSCH release instructions corresponding to some DAIs have not been received, the corresponding feedback bit is set to NACK, otherwise the decoding result of the PDSCH transmission corresponding to each PDSCH allocation instruction is set , Set the corresponding feedback bit, and set the corresponding feedback bit as ACK for the detected SPS PDSCH release indication.
  • DAI downlink assignment index
  • DAI uses a limited number of bits (currently a single DAI generally occupies 2 bits) to indicate.
  • a modulo operation is introduced, that is, to start counting sequentially from 1, and then take the modulo to get the DAI corresponding to a certain count value.
  • NR-U NR unlicensed spectrum
  • the UE when the UE feeds back the HARQ-ACK corresponding to the downlink PDSCH transmission based on the downlink scheduling signaling, because the UE needs to perform idle channel detection before transmitting the PUCCH, due to the uncertainty of acquiring the wireless channel, and the PUCCH transmission process For reasons such as interference caused by potential hidden nodes, the UE cannot feed back the HARQ-ACK at the specified time or the base station cannot successfully receive the HARQ-ACK feedback. Therefore, some enhancements have been made to the HARQ-ACK mechanism in NRU, including:
  • Non-numerical k1 in order for the base station to schedule the PDSCH, the HARQ-ACK of different PDSCHs can be fed back to the HARQ-ACK at the end of the channel occupation time (Channel Occupancy Time, COT), or in the COT
  • COT Channel occupation Time
  • the HARQ-ACK cannot be fed back in the current COT, and the feedback will not be performed until the next COT.
  • the DCI indicates this value, it means that the UE needs to save the HARQ-ACK of the PDSCH.
  • ACK feedback, and the specific time and resources for HARQ-ACK feedback will be given later.
  • the scheduled PDSCHs are divided into different groups.
  • the DCI will indicate which PDSCH group the current PDSCH belongs to.
  • the base station can trigger the UE to feed back the HARQ-ACK of the PDSCH in the corresponding group through the DCI. information.
  • the number of PDSCHs in each PDSCH group can be continuously increased.
  • the NFI is inverted relative to the NFI of the previous PDSCH in the same group, it means that the UE only needs to feed back the HARQ-ACK of the PDSCH included in the PDSCH group after the NFI is inverted.
  • Cumulative DAI counter-DAI, C-DAI
  • total DAI total DAI, T-DAI
  • the RRC parameter dl-DataToUL-ACK supports a non-numerical configuration, and can indicate the value in the DCI through the PDSCH-to-HARQ-timing-indicator field (k1), which instructs the UE to store HARQ ACK/NACK feedback for the corresponding PDSCH As a result, it does not provide any timing for the transmission of the HARQ ACK/NACK feedback result.
  • the non-numeric value is added and used to indicate to the UE that the HARQ-ACK of the corresponding PDSCH The feedback is delayed until the gNB provides timing and resources for HARQ-ACK feedback.
  • the HARQ-ACK timing of the PDSCH scheduled with a non-value k1 is derived from the next DL DCI scheduled PDSCH.
  • the DL DCI contains a value k1 and triggers the HARQ-ACK feedback of the PDSCH group including the PDSCH.
  • base station gNB request/trigger feedback for PDSCH from earlier COT, or re-feedback of earlier HARQ feedback
  • the exact HARQ feedback timing and resources are provided to the UE in another DCI (in the same or another COT).
  • ⁇ PDSCH grouping is performed by explicitly sending the group index in the DCI for scheduling PDSCH;
  • the number of HARQ-ACK bits of a PDSCH group can be changed between consecutive requests for PDSCH feedback of the same PDSCH group;
  • ⁇ A DCI can request HARQ-ACKs of one or more PDSCH groups to be fed back in the same PUCCH;
  • ⁇ C-DAI/T-DAI only accumulate in each PDSCH group
  • Each PDSCH group has a new ACK feedback group indication as a flipping bit
  • FIG. 2a and Figure 2b illustrate the HARQ-ACK triggering and transmission based on the PDSCH group.
  • the base station schedules PDSCH1 through PDCCH1, and instructs the UE to feed back its HARQ-ACK on PUCCH1.
  • the UE detects that the channel is busy when transmitting PUCCH1 and cannot send PUCCH1. Later, when the base station schedules PDSCH2 through PDCCH2, it indicates that PDSCH2 belongs to PDSCH.
  • NFI 0
  • the NFI of PDSCH1 (also belonging to PDSCH group 0) is not inverted, so the UE will feed back the HARQ-ACK of PDSCH1 and PDSCH2 on PUCCH2 (the UE needs to feed back at least one PDSCH group’s data on one PUCCH resource).
  • HARQ-ACK for PDSCH the NFI of PDSCH1 (also belonging to PDSCH group 0) is not inverted, so the UE will feed back the HARQ-ACK of PDSCH1 and PDSCH2 on PUCCH2 (the UE needs to feed back at least one PDSCH group’s data on one PUCCH resource).
  • the base station schedules PDSCH1 through PDCCH1, and instructs the UE to feed back its HARQ-ACK on PUCCH1.
  • FIG. 3 which illustrates the impact of NFI flipping on HARQ-ACK triggering and feedback.
  • PDSCH1 is scheduled through PDCCH1, and the UE is instructed to feed back its HARQ-ACK on PUCCH1.
  • the UE detects that the channel is busy when transmitting PUCCH1, it cannot send PUCCH1.
  • the UE successfully transmits PUCCH2.
  • words such as “exemplary” or “for example” are used as examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present disclosure should not be construed as being more optional or more advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • the technology described in this article is not limited to the fifth-generation mobile communication (5th-generation, 5G) system and subsequent evolution communication systems, and is not limited to the LTE/LTE evolution (LTE-Advanced, LTE-A) system, and can also be used for various A wireless communication system, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • the terms “system” and “network” are often used interchangeably.
  • the CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA).
  • UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants.
  • the TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM).
  • OFDMA system can realize such as Ultra Mobile Broadband (UMB), Evolved UTRA ((Evolution-UTRA, E-UTRA)), IEEE 802.11 ((Wi-Fi)), IEEE 802.16 ((WiMAX)), IEEE 802.20, Flash-OFDM and other radio technologies.
  • UMB Ultra Mobile Broadband
  • Evolved UTRA (Evolution-UTRA, E-UTRA)
  • IEEE 802.11 (Wi-Fi)
  • IEEE 802.16 (WiMAX)
  • IEEE 802.20 Flash-OFDM and other radio technologies.
  • UMB Ultra Mobile Broadband
  • Evolved UTRA (Evolution-U
  • LTE and more advanced LTE are new UMTS versions that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project” (3GPP).
  • CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2" (3GPP2).
  • the techniques described in this article can be used for the systems and radio technologies mentioned above, as well as other systems and radio technologies.
  • FIG. 4 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system may include: a network device 40 and a terminal 41.
  • the terminal 41 may be denoted as a UE 41, and the terminal 41 may communicate with the network device 40 (transmit signaling or transmit data).
  • the connection between the above-mentioned devices may be a wireless connection.
  • a solid line is used in FIG. 4 to indicate.
  • the network device 40 provided in the embodiment of the present disclosure may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network device in a 5G system (for example, the following Equipment such as next generation node base station (gNB) or transmission and reception point (TRP)).
  • eNB evolved node base station
  • 5G system for example, the following Equipment such as next generation node base station (gNB) or transmission and reception point (TRP)).
  • gNB next generation node base station
  • TRP transmission and reception point
  • the terminal 41 provided in the embodiments of the present disclosure may be a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (Ultra-Mobile Personal Computer, UMPC), a netbook or a personal digital assistant (Personal Digital Assistant, PDA), a mobile Internet device (Mobile Internet Device (MID), Wearable Device (Wearable Device), or in-vehicle equipment, etc.
  • an embodiment of the present disclosure provides a PDSCH processing method.
  • the execution subject of the method is a terminal, and the specific steps are as follows:
  • Step 501 According to the first information, determine the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH;
  • the first PDSCH is a PDSCH without corresponding PDCCH
  • the first information includes at least one of the following:
  • High-level signaling such as information indicated by Radio Resource Control (RRC) signaling
  • RRC Radio Resource Control
  • DCI downlink control information
  • the information carried by the first PDSCH may include at least one of the following: (a) the PDSCH group to which the first PDSCH belongs; (b) the NFI corresponding to the first PDSCH; (c) the DAI corresponding to the first PDSCH; (d) The HARQ-ACK trigger field of the second PDSCH group, the second PDSCH group is different from the PDSCH group to which the first PDSCH belongs; (e) the timing of feedback from the first PDSCH to HARQ-ACK; (f) PUCCH resource indication ; (G) Modulation and coding strategy; (h) Redundant version.
  • the second PDSCH has a corresponding PDCCH
  • the second PDSCH is the nearest PDSCH before the first PDSCH
  • the second PDSCH and the first PDSCH belong to the same PDSCH group.
  • the purpose of determining the PDSCH group, NFI or DAI above is to prepare for subsequent HARQ-ACK triggering and transmission, but whether to transmit HARQ-ACK subsequently depends on the scheduling or triggering of the network device.
  • the method in FIG. 5 may further include: transmitting the HARQ-ACK of the first PDSCH according to the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH.
  • the PDSCH group to which the first PDSCH belongs is the first PDSCH group, and the PDSCH in the first PDSCH group does not correspond to the PDCCH.
  • the determination of the PDSCH group to which the first PDSCH belongs in step 501 can be implemented in any of the following ways:
  • Method 1 Determine the PDSCH group to which the first PDSCH belongs according to the indication of activating DCI corresponding to the first PDSCH. For example, an activated downlink SPS can be activated through DCI format 1_0 or DCI format 1_1, and then according to DCI format 1_0 or DCI format 1_1
  • the PDSCH group indication field determines the PDSCH group to which each PDSCH after activation belongs.
  • Manner 2 If no additional information carried by the PDCCH is received, determine the PDSCH group to which the first PDSCH belongs according to the indication of activating the DCI corresponding to the first PDSCH or the information agreed by the protocol or the information indicated by the higher layer signaling; Otherwise, the PDSCH group to which the first PDSCH belongs is determined according to the received indication of the additional PDCCH bearer information, for example, the additional PDCCH is detected before the first PDSCH is received, and the information carried by the additional PDCCH is used to at least indicate the current The PDSCH group to which the first PDSCH in the period belongs.
  • Manner 3 Determine the PDSCH group to which the first PDSCH belongs according to the information carried by the first PDSCH.
  • the information carried by the first PDSCH reference may be made to the embodiment shown in FIG. 8.
  • the determination of the NFI or DAI corresponding to the first PDSCH in step 501 can be implemented in any of the following ways:
  • Manner 1 Determine the NFI or DAI corresponding to the first PDSCH according to the indication of activating the DCI corresponding to the first PDSCH;
  • Method 2 If no additional PDCCH bearer information is received, determine the NFI or DAI corresponding to the first PDSCH according to the indication of activating DCI corresponding to the first PDSCH; otherwise, determine the NFI or DAI corresponding to the first PDSCH according to the received additional PDCCH bearer information NFI or DAI corresponding to the first PDSCH, and the information carried by the additional PDCCH is at least used to indicate the NFI or DAI corresponding to the first PDSCH in the current period;
  • Method 3 If no additional PDCCH information is received, determine the NFI or DAI corresponding to the first PDSCH according to the NFI or DAI corresponding to the second PDSCH; otherwise, determine the first PDSCH according to the received additional PDCCH information. NFI or DAI corresponding to PDSCH;
  • Manner 4 Determine the NFI or DAI corresponding to the first PDSCH according to the information carried by the first PDSCH.
  • the PDSCH group that does not correspond to the PDCCH, or the NFI or DAI corresponding to the PDSCH, to prepare for subsequent HARQ-ACK triggering and transmission, thereby improving the effectiveness of the communication system.
  • the NFI is equal to the activated DCI or the NFI corresponding to the second PDSCH, but DAI needs to be automatically accumulated according to the number of PDSCHs received by the UE.
  • PDCCH1 activates a downlink (Downlink, DL) SPS, and indicates the PDSCH group, NFI and other information in the activated DCI.
  • Downlink, DL downlink
  • NFI downlink
  • PDCCH1 For the first PDSCH transmission (PDSCH1) after activation, there is a corresponding PDCCH scheduling , The grouping and NFI of PDSCH1 are determined according to the instruction of activating DCI, that is, PDCCH1.
  • SPS PDSCH For other PDSCH transmissions after activation, namely PDSCH2, PDSCH3, etc., there is no corresponding PDCCH.
  • SPS PDSCH namely PDSCH2 and PDSCH3 do not belong to any PDSCH group, and there is no need to have a corresponding PDSCH group number and NFI indication.
  • the UE feeds back the HARQ-ACK of PDSCH3 without PDCCH and PDSCH4 scheduled with PDCCH2 on PUCCH3.
  • the UE detects that the channel is busy when transmitting PUCCH3 and fails to send PUCCH3 successfully.
  • the base station triggers the UE to transmit HARQ-ACK feedback of PDSCH group 0 in PDCCH3. Since the SPS PDSCH does not belong to any group, the PDCSH of PDSCH group 0 only Contains PDSCH4, that is, the UE needs to feed back HARQ-ACKs of PDSCH4 and PDSCH5 on PUCCH5. For the HARQ-ACK feedback of PDSCH2 and PDSCH3, the UE can only send on PUCCH2 and PUCCH3, respectively.
  • the UE detects that the channel is busy when transmitting PUCCH2 and fails to send PUCCH2.
  • the base station schedules the UE on PDCCH2 to feed back the HARQ-ACK of PDSCH4 on PUCCH3.
  • the UE needs to feed back a PDSCH group in a PUCCH ( The HARQ-ACK of PDSCH group 0), which triggers the UE to transmit the HARQ-ACK feedback of PDSCH group 0.
  • the PDSCH includes PDSCH 1, PDSCH2, PDSCH3 and PDSCH4.
  • the UE needs to feed back HARQ-ACKs of PDSCH1, PDSCH2, PDSCH3, and PDSCH4 on PUCCH3.
  • PDSCH5 is scheduled by PDCCH3, NFI is reversed to 1, and the UE only needs to send HARQ-ACK of PDSCH5 when sending PUCCH4.
  • the UE detects an additional PDCCH before each PDSCH (such as SPS PDSCH) that does not have a corresponding PDCCH.
  • the additional PDCCH includes the PDSCH grouping indicator, NFI indicator and/or DAI indicator of the SPS PDSCH. .
  • the UE will determine the PDSCH group to which the SPS PDSCH belongs according to the indication of activating the DCI (or the agreement stipulates that SPS PDSCH is a default PDSCH group), and its NFI is based on the PDSCH of the same PDSCH group that was recently dynamically scheduled
  • the information may include at least one of the following:
  • Modulation and Coding Scheme (MCS)
  • the above information can be coded together with the data information on the PDSCH and rate matching, or can be coded separately, and mapped on a specific position of the PDSCH according to a predetermined rule.
  • the UE determines the PDSCH group to which it belongs and/or the corresponding NFI and/or DAI according to the information on the decoded PDSCH.
  • the UE feeds back HARQ-ACK on the PUCCH resource configured by the higher layer (when the UE only feeds back the HARQ-ACK of the PDSCH without PDCCH, or when the UE only feeds back the HARQ-ACK of the PDSCH without PDCCH -CK and no additional information (including additional PDCCH or information carried on the PDSCH) instructs the UE to feed back the PUCCH resource of HARQ-ACK), the UE only feeds back the HARQ-ACK of the PDSCH scheduled without PDCCH, without feedback HARQ-ACK of all PDSCHs of the PDSCH group.
  • PDCCH1 activates a downlink SPS.
  • PDSCH1 is the first PDSCH transmission after activation. Its PDSCH group and NFI are determined according to the instructions in the corresponding PDCCH, namely PDCCH1.
  • PDSCH2, PDSCH3, and PDSCH6 are the PDSCHs of the subsequent period, respectively.
  • PDCCH includes a two-bit trigger field (assuming there are three PDSCH groups in total, among which PDSCH group 0, PDSCH group 1 is used for PDSCH with PDCCH dynamic scheduling, and PDSCH group 2 is used for PD
  • the highest bit represents another dynamically scheduled group, and the lowest bit represents the SPS PDSCH group.
  • the UE determines which SPS PDSCH HARQ-ACK received before feedback according to the SPS PDSCH reception time and the time interval between the HARQ-ACK feedback after the trigger (it can be the end position of the SPS PDSCH to the PDCCH that triggers the SPS PDSCH HARQ-ACK feedback
  • the interval between the start positions can also be the interval between the end position of the SPS PDSCH and the start position of the PUCCH that feeds back the SPS PDSCH HARQ-ACK after the trigger), for example, the RRC configuration or the protocol specified time T.
  • the UE will save its corresponding SPS HARQ-ACK, until after T, the UE will clear that it will no longer feed back
  • PUCCH2 and PUCCH3 are not successfully transmitted.
  • the base station triggers the HARQ-ACK transmission of the SPS PDSCH group, if there is no time limit, for the HARQ-ACK of the SPS PDSCH, the UE will feed back PDSCH2, PDSCH3, and PDSCH6 on PUCCH4.
  • HARQ-ACK (and dynamically scheduled PDSCH4, PDSCH5 HARQ-ACK), but if there is a time limit (assuming it is equal to 2 downlink SPS cycles), since the time from PDSCH2 to PUCCH4 exceeds the time limit, the UE only needs to feed back PDSCH3 and PDSCH6 HARQ-ACK (and dynamically scheduled PDSCH4, PDSCH5 HARQ-ACK).
  • an embodiment of the present disclosure further provides a terminal, and the terminal 1100 includes:
  • the determining module 1101 is configured to determine the PDSCH group to which the first PDSCH belongs according to the first information, and/or the new acknowledgement feedback group indication NFI or downlink allocation indication DAI corresponding to the first PDSCH; wherein, the first PDSCH is no PDSCH corresponding to the physical downlink control channel PDCCH;
  • the first information includes at least one of the following:
  • High-level signaling such as information indicated by RRC signaling
  • the information carried by the first PDSCH may include at least one of the following: (a) the PDSCH group to which the first PDSCH belongs; (b) the NFI corresponding to the first PDSCH; (c) the first PDSCH corresponding (D) HARQ-ACK trigger field of the second PDSCH group, the second PDSCH group is different from the PDSCH group to which the first PDSCH belongs; (e) the timing of feedback from the first PDSCH to HARQ-ACK; (f) PUCCH resource indication; (g) modulation and coding strategy; (h) redundancy version.
  • the second PDSCH has a corresponding PDCCH
  • the second PDSCH is the nearest PDSCH before the first PDSCH
  • the second PDSCH and the first PDSCH belong to the same PDSCH group.
  • the terminal 1100 may further include: a sending module, configured to transmit HARQ-ACK of the first PDSCH according to the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH.
  • a sending module configured to transmit HARQ-ACK of the first PDSCH according to the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH.
  • the PDSCH group to which the first PDSCH belongs is the first PDSCH group, and the first PDSCH group includes PDSCHs that do not correspond to PDCCHs, or PDSCHs that do not have group indications in the corresponding PDCCHs.
  • the determining module 1101 determines the PDSCH group to which the first PDSCH belongs in the following manner:
  • the PDSCH group to which the first PDSCH belongs is determined according to the indication of activating the DCI corresponding to the first PDSCH or the information agreed by the protocol or the information indicated by the higher-layer signaling; otherwise, according to The received information carried by the additional PDCCH determines the PDSCH group to which the first PDSCH belongs.
  • the determining module 1101 determines the NFI or DAI corresponding to the first PDSCH in any of the following ways:
  • Manner 1 If no additional PDCCH information is received, determine the NFI or DAI corresponding to the first PDSCH according to the indication of activating the DCI corresponding to the first PDSCH; otherwise, according to the received additional PDCCH information , Determine the NFI or DAI corresponding to the first PDSCH;
  • the terminal provided in the embodiment of the present disclosure may execute the embodiment shown in FIG. 5, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.
  • the terminal 1200 shown in FIG. 12 includes: at least one processor 1201, a memory 1202, at least one network interface 1204, and a user interface 1203.
  • the various components in the terminal 1200 are coupled together through the bus system 1205.
  • the bus system 1205 is used to implement connection and communication between these components.
  • the bus system 1205 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 1205 in FIG. 12.
  • the user interface 1203 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).
  • a pointing device for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.
  • the memory 1202 in the embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data rate SDRAM DDRSDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM DRRAM
  • the memory 1202 of the system and method described in the embodiments of the present disclosure is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 1202 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: the operating system 12021 and the application 12022.
  • the operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks.
  • the application program 12022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services.
  • a program that implements the method of the embodiment of the present disclosure may be included in the application program 12022.
  • the terminal provided in the embodiment of the present disclosure can execute the method embodiment shown in FIG. 5, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.
  • the steps of the method or algorithm described in conjunction with the disclosure of the present disclosure may be implemented in a hardware manner, or may be implemented in a manner of executing software instructions on a processor.
  • Software instructions can be composed of corresponding software modules.
  • Software modules can be stored in random access memory (Random Access Memory, RAM), flash memory, memory (Read-Only Memory, ROM), and erasable programmable read-only memory (Erasable).
  • PROM EPROM
  • Electrically Erasable Programmable Read-Only Memory Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be carried in an application specific integrated circuit (ASIC).
  • ASIC application specific integrated circuit
  • the ASIC can be carried in the core network interface device.
  • the processor and the storage medium may also exist as discrete components in the core network interface device.
  • the functions described in the present disclosure can be implemented by hardware, software, firmware, or any combination thereof.
  • these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium.
  • the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another.
  • the storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.
  • the embodiments of the present disclosure can be provided as a method, a system, or a computer program product. Therefore, the embodiments of the present disclosure may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present disclosure may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本公开实施例提供一种物理下行共享信道处理的方法及设备，该方法包括：根据第一信息，确定第一PDSCH所属的PDSCH组，和/或，第一PDSCH对应的NFI或DAI；其中，第一PDSCH为没有对应PDCCH的PDSCH，该第一信息包括以下至少一项：高层信令指示的信息；第一PDSCH对应的激活DCI指示的信息；额外的PDCCH承载的信息；协议约定的信息；第一PDSCH承载的信息；第二PDSCH对应的NFI或DAI。

Description

物理下行共享信道处理的方法及设备 技术领域
本公开实施例涉及通信技术领域，具体涉及一种物理下行共享信道处理的方法及设备。
背景技术
对于非授权频段新空口(NR-Unlicensed，NRU)中，为了使终端(例如用户设备(User Equipment，UE))有多次传输混合自动重传请求应答(Hybrid automatic repeat request acknowledgement，HARQ-ACK)机会，引入PDSCH分组和HARQ-ACK触发机制，对于每个物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，UE需要确定该PDSCH对应的PDSCH组和新确认反馈组指示(New ACK-Feedback Group Indicator，NFI)值或下行分配指示(Downlink Assignment Index，DAI)，这些值都是通过调度PDSCH的PDCCH指示实现的，对于没有对应PDCCH的PDSCH，如何确定该PDSCH所属的PDSCH组，或者该PDSCH对应的NFI或DAI是亟待解决的问题。
发明内容
本公开实施例的一个目的在于提供一种物理下行共享信道处理的方法及设备，解决如何确定PDSCH所属的PDSCH组，或者PDSCH对应的NFI或DAI的问题。
依据第一方面，本公开实施例提供一种物理下行共享信道处理的方法，包括：
根据第一信息，确定第一PDSCH所属的PDSCH组，和/或，所述第一PDSCH对应的NFI或DAI；
其中，所述第一PDSCH为没有对应物理下行控制信道PDCCH的PDSCH；
所述第一信息包括以下至少一项：
高层信令指示的信息；
所述第一PDSCH对应的激活下行DCI的指示；
额外的PDCCH承载的信息；
协议约定的信息；
所述第一PDSCH承载的信息；
第二PDSCH对应的NFI或DAI，所述第二PDSCH有对应的PDCCH，所述第二PDSCH是所述第一PDSCH之前最近的一个PDSCH，且所述第二PDSCH与所述第一PDSCH所属同一个PDSCH组。
第二方面，本公开实施例还提供一种终端，包括：
确定模块，用于根据第一信息，确定第一PDSCH所属的PDSCH组，和/或，所述第一PDSCH对应的NFI或DAI；
其中，所述第一PDSCH为没有对应PDCCH的PDSCH；
所述第一信息包括以下至少一项：
高层信令指示的信息；
所述第一PDSCH对应的激活DCI的指示；
额外的PDCCH承载的信息；
协议约定的信息；
所述第一PDSCH承载的信息；
第二PDSCH对应的NFI或DAI，所述第二PDSCH有对应的PDCCH，所述第二PDSCH是所述第一PDSCH之前最近的一个PDSCH，且所述第二PDSCH与所述第一PDSCH所属同一个PDSCH组。
第三方面，本公开实施例还提供一种终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如第一方面所述的物理下行共享信道处理的方法的步骤。
第四方面，本公开实施例还提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如第一方面所述的物理下行共享信道处理的方法的步骤。
在本公开实施例中，可以根据第一信息确定没有对应PDCCH的PDSCH所属的PDSCH组，或该PDSCH对应的NFI或DAI，为后续的HARQ-ACK触发及传输做准备，提高了通信系统的有效性。
附图说明
通过阅读下文可选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出可选实施方式的目的，而并不认为是对本公开的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1a和图1b为UE确定非数值k1调度的PDSCH的HARQ-ACK反馈的示意图；
图2a和图2b为基于PDSCH组的HARQ-ACK触发及传输的示意图；
图3为NFI的翻转对HARQ-ACK触发及反馈的影响的示意图；
图4为无线通信系统的架构示意图；
图5为本公开实施例的物理下行共享信道处理的方法的示意图；
图6为本公开实施例的实施方式一中的HARQ-ACK反馈示意图；
图7为本公开实施例的实施方式二中的HARQ-ACK反馈示意图；
图8为本公开实施例的实施方式三中的HARQ-ACK反馈示意图；
图9为本公开实施例的实施方式四中的HARQ-ACK反馈示意图；
图10为本公开实施例的实施方式五中的HARQ-ACK反馈示意图；
图11为本公开实施例的终端的示意图之一；
图12为本公开实施例的终端的示意图之二。
具体实施方式
一、关于非授权通信系统：
在未来通信系统中，非授权频段(Unlicensed Band)可以作为授权频段(Licensed Band)的补充帮助运营商对服务进行扩容。由于非授权频段由多种技术(Radio Access Technology，RAT)共用，例如无线保真(Wireless Fidelity，Wi-Fi)、雷达、长期演进(Long Term Evolution，LTE)-授权辅助接入(授权辅助接入，LAA)等，因此在某些国家或者区域，非授权频段在使用时必须符合监管条例以保证所有设备可以公平地共享该资源，例如传输前侦听信道(Listen Before Talk，LBT)、最大信道占用时间(Maximum Channel Occupancy Time，MCOT)等。当传输节点需要发送信息时，要求先在指定无线信道上 执行LBT，对周围的无线传输环境进行能量检测(Energy Detection，ED)，当能量低于一定门限时，信道被判断为空闲，此时才可以开始传输。反之，则判断信道为忙，传输节点不能进行发送。传输节点可以是基站、终端、Wi-Fi接入点(Access Point，AP)等。传输节点开始传输后，占用的信道时间不能超过MCOT。
二、关于下行调度及反馈：
在基于共享信道的无线通信系统中，网络侧合理地为各个终端分配指定的共享资源，并通过下行控制信息(Downlink Control Information，DCI)指示终端使用指定的共享资源进行对应的发送/接收操作。对于下行方向，资源分配过程即下行调度，终端在完成对应的接收操作之后，需要将接收结果反馈给网络侧以便网络侧执行后续下行调度处理，当采用基于HARQ的传输机制时，这里的反馈可称为HARQ-ACK。
在新空口(New Radio，NR)通信系统中，为了支持灵活的时序处理，网络侧基站(gNB)在DCI中向UE指示下行传输对应的时频资源、数据传输等信息时，同时也指示对应的HARQ-ACK传输使用的物理上行控制信道(Physical Uplink Control Channel，PUCCH)资源情况，包括PUCCH资源的编号(例如，PUCCH资源指示(PRI))，以及PUCCH资源所在时隙相对于下行PDSCH传输所在时隙的偏移。
当指示PUCCH资源的时隙偏移时，先由无线资源控制(Radio Resource Control，RRC)为UE半静态地配置一个时隙偏移表dl-DataToUL-ACK，为一个可用时隙偏移的序列，然后在DCI中使用PDSCH-to-HARQ-timing-indicator字段指示半静态配置的序列中的某个索引，作为实际生效的PUCCH资源时隙偏移。
三、关于NR的HARQ-ACK Codebook方案：
当UE构建在某个反馈时刻需要上报的HARQ-ACK比特序列时，基于预定义的规则，确定各下行PDSCH传输与构建的HARQ-ACK比特序列中某个比特的对应关系，这种操作称之为构建HARQ-ACK码本(Codebook)或者HARQ-ACK Codebook方案。NR版本15(Release 15，Re-15)采用两种HARQ-ACK Codebook方案：半静态码本(Type-1)和动态码本(Type-2)：
a、半静态码本基于反馈定时(Timing)配置表格(即前述时隙偏移表dl-DataToUL-ACK)和HARQ-ACK反馈时刻，对每个可能的调度时刻的每种可能的PDSCH时域分配(基于反馈Timing配置表格中的某项配置，此PDSCH时域分配对应的HARQ-ACK反馈时刻正好是上报HARQ-ACK比特序列的时刻)都预留了对应的反馈比特，如果对于某个可能的PDSCH时域分配，UE实际并未检测到其对应的网络调度指示，则将其对应的反馈比特设置为否定应答(Negative Acknowledgement，NACK)，否则按照此PDSCH时域分配对应的PDSCH传输的解码结果，设置其对应的反馈比特；
b、动态码本通过对实际调度的PDSCH传输/SPS PDSCH释放指示进行下行分配指示(Downlink assignment index，DAI)计数的方式，为每个实际调度的PDSCH/SPS PDSCH释放都预留了反馈比特，如果UE通过检测到的其它DAI推测出有些DAI对应的PDSCH分配指示或SPS PDSCH释放指示并未收到，则将对应的反馈比特设置为NACK，否则按照各PDSCH分配指示对应的PDSCH传输的解码结果，设置其对应的反馈比特，对于检测到的SPS PDSCH释放指示，将其对应的反馈比特设置为ACK。
DAI采用有限的比特数(目前单个DAI一般占用2比特)来指示，为了扩展其指示范围，引入了取模操作，即先从1开始顺序计数，然后再取模得到某个计数值对应的DAI值。
四、关于NR非授权频谱(NR-U)的HARQ-ACK触发反馈机制：
对于NR-U网络，在UE基于下行调度信令反馈下行PDSCH传输对应的HARQ-ACK时，由于在传输PUCCH前，UE需要做空闲信道检测，由于获取无线信道的不确定性，以及PUCCH传输过程中潜在的隐藏节点导致的干扰等原因，导致UE无法在指定时间反馈HARQ-ACK或基站无法成功接收到HARQ-ACK反馈。因此NRU中针对HARQ-ACK机制进行了一些增强，包括：
1)引入非数值的定时指示(non numerical k1)：为了基站在调度PDSCH时可以将不同PDSCH的HARQ-ACK在信道占用时间(Channel Occupancy Time，COT)的尾部一起反馈HARQ-ACK，或者在COT尾部调度的PDSCH，由于处理时间的限制，无法在当前COT反馈HARQ-ACK，等到下一个COT 内再反馈，引入非数值的k1，当DCI指示该值时，表示UE需要保存该PDSCH的HARQ-ACK反馈，而反馈HARQ-ACK的具体时间和资源会在之后给出。
2)支持HARQ-ACK触发反馈机制：为了解决UE无法发送或基站没有成功接收最初的HARQ-ACK反馈带来的不必要的PDSCH重传问题，引入了HARQ-ACK触发反馈机制。
具体的，将调度的PDSCH分为不同的组，每个PDSCH在调度时，DCI会指示当前PDSCH属于哪一个PDSCH组(group)，基站可以通过DCI触发UE反馈相应组内的PDSCH的HARQ-ACK信息。每个PDSCH组内的PDSCH的数目可以不断增加。同时PDSCH的PDCCH中还有NFI域，当NFI相对于之前同一组的PDSCH的NFI翻转，则表示UE只需要反馈NFI翻转之后该PDSCH组包含的PDSCH的HARQ-ACK。累积DAI(counter-DAI，C-DAI)/总DAI(total DAI，T-DAI)分别在每个PDSCH组内计算。
RRC参数dl-DataToUL-ACK支持一个非数值配置，并可以在DCI中通过PDSCH-to-HARQ-timing-indicator域(k1)指示该值，该值指示UE为相应的PDSCH存储HARQ ACK/NACK反馈结果，但不为该HARQ ACK/NACK反馈结果的传输提供任何定时。
对于PDSCH-to-HARQ-timing-indicator的可能的取值范围，在版本15(Rel-15)中定义的值的基础上，增加该非数值，并用于向UE指示将相应PDSCH的HARQ-ACK反馈延迟，直到gNB提供用于HARQ-ACK反馈的定时和资源为止。
对于增强的动态码本操作，用非数值k1调度的PDSCH的HARQ-ACK定时由下一个DL DCI调度PDSCH导出，该DL DCI包含一个数值k1并触发包括该PDSCH的PDSCH组的HARQ-ACK反馈。
为实现提供多次HARQ ACK/NACK传输机会和跨COT HARQ-ACK反馈，至少支持以下内容：基站(gNB)请求/触发对于来自较早COT的PDSCH的反馈，或较早HARQ反馈的再次反馈，其中确切的HARQ反馈定时和资源在另一DCI(在相同或另一COT中)提供给UE。
对于使用动态HARQ码本(type-2码本)的操作：
·通过在调度PDSCH的DCI中显式地发送组索引来进行PDSCH分组；
对于任何数值或非数值为k1调度的PDSCH；
·一个PDSCH组的HARQ-ACK比特数可以在同一PDSCH组的PDSCH反馈的连续请求之间改变；
·同一组中所有PDSCH的HARQ-ACK反馈在同一个PUCCH中进行；
·一个DCI可以请求一个或多个PDSCH组的HARQ-ACK在为同一PUCCH中反馈；
·C-DAI/T-DAI仅在每个PDSCH组内累积；
·每个PDSCH组有新ACK反馈组指示用作翻转比特；
·PDSCH组的最大数量；
·此功能作为一种UE能力，由UE上报。
参见图1a和图1b，如图示例UE如何确定非数值k1调度的PDSCH的HARQ-ACK反馈，在图1a中基站通过PDCCH1调度了PDSCH1，并且其PDSCH到HARQ-ACK反馈定时指示为非数值(k1＝N，non-numerical value)，之后PDCCH2又调度了PDSCH2，并且其PDSCH到HARQ-ACK反馈定时指示为具体数值k1＝4，则表示UE在收到PDSCH2之后的4个时隙后反馈其HARQ-ACK，同时由于PDSCH1和PDSCH2同属于一个PDSCH组，NFI都等于0，没有翻转，则UE需要将PDSCH1和PDSCH2的HARQ-ACK一起反馈(通过之后调度的同PDSCH组的PDSCH确定非数值k1调度的PDSCH的HARQ-ACK反馈的时间和资源)。
在图1b中基站通过PDCCH1调度了PDSCH1，并且其PDSCH到HARQ-ACK反馈定时指示为非数值k1＝N，之后PDCCH2又调度了PDSCH2，并且其PDSCH到HARQ-ACK反馈定时指示为具体数值k1＝4，则表示UE在收到PDSCH2之后的4个时隙后反馈其HARQ-ACK，虽然PDSCH1和PDSCH2属于不同的PDSCH组，但是在PDCCH2中基站通过HARQ-ACK触发域触发了另一个PDSCH组(PDSCH组0)的HARQ-ACK反馈(T＝1)，因此则UE需要将PDSCH1和PDSCH2的HARQ-ACK一起反馈(通过之后调度的其他PDSCH组时的HARQ-ACK触发域的触发来确定非数值k1调度的PDSCH的HARQ-ACK反馈的时间和资源)。
参见图2a和图2b，如图示例了基于PDSCH组的HARQ-ACK触发及传 输。在图2a中基站通过PDCCH1调度了PDSCH1，并且指示UE在PUCCH1反馈其HARQ-ACK，UE在传输PUCCH1时由于检测到信道为忙，无法发送PUCCH1，之后基站通过PDCCH2调度PDSCH2时，指示PDSCH2属于PDSCH组0，NFI＝0，相对于PDSCH1(同样属于PDSCH组0)的NFI没有翻转，因此UE将在PUCCH2上反馈PDSCH1和PDSCH2的HARQ-ACK(UE需要在一个PUCCH资源上反馈至少一个PDSCH组的PDSCH的HARQ-ACK)。
在图2b中基站通过PDCCH1调度了PDSCH1，并且指示UE在PUCCH1反馈其HARQ-ACK，UE在传输PUCCH1时由于检测到信道为忙，无法发送PUCCH1，之后基站通过PDCCH2调度PDSCH2时，指示PDSCH2属于PDSCH组1，且HARQ-ACK触发域(用于触发另一个PDSCH组的HARQ-ACK)T＝1，因此UE将在PUCCH2上反馈PDSCH组0(PDSCH1)和PDSCH组1(PDSCH2)的HARQ-ACK。
参见图3，如图示例了NFI的翻转对HARQ-ACK触发及反馈的影响。通过PDCCH1调度了PDSCH1，并且指示UE在PUCCH1反馈其HARQ-ACK，UE在传输PUCCH1时由于检测到信道为忙，无法发送PUCCH1，之后基站通过PDCCH2调度PDSCH2时，指示PDSCH2属于PDSCH组0，NFI＝0，相对于PDSCH1(同样属于PDSCH组0)的NFI没有翻转，因此UE将在PUCCH2上反馈PDSCH1和PDSCH2的HARQ-ACK。UE成功传输PUCCH2.基站在接下来调度PDSCH3时，指示PDSCH2属于PDSCH组0，NFI＝1，相对于PDSCH2(同样属于PDSCH组0)的NFI翻转，则UE只需要反馈PDSCH3的HARQ-ACK，而不再需要反馈PDSCH1和PDSCH2的HARQ-ACK。
本申请的说明书和权利要求书中的术语“包括”以及它的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一，例如A和/或B，表示包含单独A，单独B，以及A和B都存在三种情况。
在本公开实施例中，“示例性的”或者“例如”等词用于表示作例子、例证 或说明。本公开实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更可选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本文所描述的技术不限于第五代移动通信(5th-generation，5G)系统以及后续演进通信系统，以及不限于LTE/LTE的演进(LTE-Advanced，LTE-A)系统，并且也可用于各种无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。
术语“系统”和“网络”常被可互换地使用。CDMA系统可实现诸如CDMA2000、通用地面无线电接入(Universal Terrestrial Radio Access，UTRA)等无线电技术。UTRA包括宽带CDMA(Wideband Code Division Multiple Access，WCDMA)和其他CDMA变体。TDMA系统可实现诸如全球移动通信系统(Global System for Mobile Communication，GSM)之类的无线电技术。OFDMA系统可实现诸如超移动宽带(Ultra Mobile Broadband，UMB)、演进型UTRA((Evolution-UTRA，E-UTRA))、IEEE 802.11((Wi-Fi))、IEEE 802.16((WiMAX))、IEEE 802.20、Flash-OFDM等无线电技术。UTRA和E-UTRA是通用移动电信系统(Universal Mobile Telecommunications System，UMTS)的部分。LTE和更高级的LTE(如LTE-A)是使用E-UTRA的新UMTS版本。UTRA、E-UTRA、UMTS、LTE、LTE-A以及GSM在来自名为“第三代伙伴项目”(3rd Generation Partnership Project，3GPP)的组织的文献中描述。CDMA2000和UMB在来自名为“第三代伙伴项目2”(3GPP2)的组织的文献中描述。本文所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。
下面结合附图介绍本公开的实施例。本公开实施例提供的一种物理下行共享信道处理的方法及设备可以应用于无线通信系统中。参考图4，为本公开实施例提供的一种无线通信系统的架构示意图。如图4所示，该无线通信系统可以包括：网络设备40和终端41，终端41可以记做UE41，终端41可 以与网络设备40通信(传输信令或传输数据)。在实际应用中上述各个设备之间的连接可以为无线连接，为了方便直观地表示各个设备之间的连接关系，图4中采用实线示意。
本公开实施例提供的网络设备40可以为基站，该基站可以为通常所用的基站，也可以为演进型基站(evolved node base station，eNB)，还可以为5G系统中的网络设备(例如，下一代基站(next generation node base station，gNB)或发送和接收点(transmission and reception point，TRP))等设备。
本公开实施例提供的终端41可以为手机、平板电脑、笔记本电脑、超级移动个人计算机(Ultra-Mobile Personal Computer，UMPC)、上网本或者个人数字助理(Personal Digital Assistant，PDA)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备等。
参见图5，本公开实施例提供一种PDSCH处理的方法，该方法的执行主体为终端，具体步骤如下：
步骤501：根据第一信息，确定第一PDSCH所属的PDSCH组，和/或，第一PDSCH对应的NFI或DAI；
其中，所述第一PDSCH为没有对应PDCCH的PDSCH；
所述第一信息包括以下至少一项：
(1)高层信令，例如无线资源控制(Radio Resource Control，RRC)信令指示的信息；
(2)第一PDSCH对应的激活下行控制信息(DCI)的指示；
(3)额外的PDCCH承载的信息；
(4)协议约定的信息；
(5)第一PDSCH承载的信息；
可选地，第一PDSCH承载的信息可以包括以下至少一项：(a)第一PDSCH所属PDSCH组；(b)第一PDSCH对应的NFI；(c)第一PDSCH对应的DAI；(d)第二PDSCH组的HARQ-ACK触发域，所述第二PDSCH组与所述第一PDSCH所属PDSCH组不同；(e)所述第一PDSCH到HARQ-ACK反馈的定时；(f)PUCCH资源指示；(g)调制与编码策略；(h)冗余版本。
(6)第二PDSCH对应的NFI或DAI，第二PDSCH有对应的PDCCH， 第二PDSCH是第一PDSCH之前最近的一个PDSCH，且第二PDSCH与第一PDSCH所属同一个PDSCH组。
在本公开实施例中，上述确定PDSCH组、NFI或DAI目的是为后续的HARQ-ACK触发及传输做准备，但后续是否传输HARQ-ACK，还取决于网络设备的调度或触发。例如，在步骤501之后，图5中的方法还可以包括：根据第一PDSCH所属的PDSCH组，和/或，所述第一PDSCH对应的NFI或DAI，传输第一PDSCH的HARQ-ACK。
在一些实施方式中，第一PDSCH所属的PDSCH组为第一PDSCH组，所述第一PDSCH组中的PDSCH没有对应PDCCH。
在一些实施方式中，步骤501中的确定第一PDSCH所属的PDSCH组可以通过以下任意方式实现：
方式一：根据第一PDSCH对应的激活DCI的指示，确定第一PDSCH所属的PDSCH组，例如，可以通过DCI格式1_0或DCI格式1_1激活一个激活下行SPS，则根据DCI格式1_0或DCI格式1_1中的PDSCH组指示字段确定激活后的每一个PDSCH所属的PDSCH组。
方式二：如果没有收到额外的PDCCH承载的信息，则根据第一PDSCH对应的激活DCI的指示或者按照协议约定的信息或者高层信令指示的信息，确定所述第一PDSCH所属的PDSCH组；否则，根据接收到的额外的PDCCH承载信息的指示，确定所述第一PDSCH所属的PDSCH组，例如，在接收第一PDSCH之前检测额外的PDCCH，该额外的PDCCH承载的信息至少用于指示当前周期内的第一PDSCH所属的PDSCH组。
方式三：根据所述第一PDSCH承载的信息，确定所述第一PDSCH所属的PDSCH组。其中，关于该第一PDSCH承载的信息描述可以参照图8所示的实施方式。
在一些实施方式中，步骤501中的确定第一PDSCH对应的NFI或DAI可以通过以下任意方式实现：
方式一：根据第一PDSCH对应的激活DCI的指示，确定第一PDSCH对应的NFI或DAI；
方式二：如果没有收到额外的PDCCH承载的信息，则根据第一PDSCH 对应的激活DCI的指示，确定第一PDSCH对应的NFI或DAI；否则，根据接收到的额外的PDCCH承载的信息，确定第一PDSCH对应的NFI或DAI，该额外的PDCCH承载的信息至少用于指示当前周期内的第一PDSCH对应的NFI或DAI；
方式三：如果没有收到额外的PDCCH承载的信息，根据第二PDSCH对应的NFI或DAI，确定第一PDSCH对应的NFI或DAI；否则，根据接收到的额外的PDCCH承载的信息，确定第一PDSCH对应的NFI或DAI；
方式四：根据第一PDSCH承载的信息，确定第一PDSCH对应的NFI或DAI。
在本公开实施例中，可以实现确定没有对应PDCCH的PDSCH组，或该PDSCH对应的NFI或DAI，为后续的HARQ-ACK触发及传输做准备，提高了通信系统的有效性。
需要说明的是在上述实施方式中，UE根据激活DCI或根据第二PDSCH对应的NFI或DAI，确定第一PDSCH对应的NFI或DAI时，NFI等于激活DCI或根据第二PDSCH对应的NFI，但DAI需要根据UE接收到的PDSCH个数自动进行累计。
实施例一
如图6所示，PDCCH1激活了一个下行(Downlink，DL)SPS，并在激活DCI中指示了PDSCH组，NFI等信息，对于激活后的第一个PDSCH传输(PDSCH1)，有对应的PDCCH调度，PDSCH1的分组和NFI按照激活DCI，即PDCCH1的指示确定。
对于激活后的其他PDSCH传输，即PDSCH2、PDSCH3等，没有对应的PDCCH，为了简化系统设计，SPS PDSCH即PDSCH2、PDSCH3不属于任何一个PDSCH组，不需要有对应的PDSCH组号和NFI指示。
如图6所示，根据基站的调度，UE在PUCCH3上反馈没有PDCCH的PDSCH3以及有PDCCH2调度的PDSCH4的HARQ-ACK。UE在传输PUCCH3时检测到信道为忙，未能成功发送PUCCH3，基站在PDCCH3中触发UE传输PDSCH组0的HARQ-ACK反馈，由于SPS PDSCH不属于任何一个组，因此，PDSCH组0的PDCSH只包含PDSCH4，即UE要在PUCCH5 上反馈PDSCH4和PDSCH5的HARQ-ACK。而对于PDSCH2和PDSCH3的HARQ-ACK反馈，UE只能分别在PUCCH2和PUCCH3发送。
在此方案中，对于下行SPS传输，只有激活后的第一个周期的PDSCH(有对应的PDCCH)支持PDSCH分组和基于PDSCH组的HARQ-ACKC触发及传输(按照激活DCI确定PDSCH分组和NFI)，对于激活后的第一个周期之后的PDSCH(没有对应的PDCCH)，由于没有对应的PDCCH，不支持PDSCH分组和基于PDSCH组的HARQ-ACKC触发及传输。
实施例二
如图7所示，按照激活DCI的指示确定SPS PDSCH所属PDSCH组，即PDSCH2和PDSCH3属于PDSCH组0，其NFI根据最近的动态调度的同一个PDSCH组的PDSCH的NFI确定，即PDSCH2和PDSCH3对应的NFI＝0。
如图7所示，UE在传输PUCCH2时检测到信道为忙，未能成功发送PUCCH2，基站在PDCCH2调度UE在PUCCH3反馈PDSCH4的HARQ-ACK，同时由于UE要在一个PUCCH内反馈一个PDSCH组(PDSCH组0)的HARQ-ACK，即触发UE传输PDSCH组0的HARQ-ACK反馈，由于PDSCH1、PDSCH2、PDSCH3、PDSCH4均属于PDSCH组0，且其NFI都等于0，没有翻转，因此PDSCH组0的PDSCH包含了PDSCH 1、PDSCH2、PDSCH3和PDSCH4。
即，UE要在PUCCH3上反馈PDSCH1、PDSCH2、PDSCH3、PDSCH4的HARQ-ACK。而对于PDCCH3调度PDSCH5时，NFI翻转为1，UE在发送PUCCH4只需要发送PDSCH5的HARQ-ACK。
需要说明的是，本实施例中虽然PDSCH2和PDSCH1同属于PDSCH组0，且NFI＝0，没有翻转，但UE不需要在PUCCH2上反馈PDSCH1的HARQ-ACK反馈，而只需要反馈PDSCH2的HARQ-ACK。
实施例三
如图8所示，UE在每个没有对应的PDCCH的PDSCH(例如SPS PDSCH)前检测额外(additional)的PDCCH，该额外的PDCCH中包含SPS PDSCH的PDSCH分组指示、NFI指示和/或DAI指示。如果UE没有检测到额外的PDCCH，则UE按照激活DCI的指示(或者协议规定SPS PDSCH为一个默 认的PDSCH组)确定SPS PDSCH所属PDSCH组，其NFI根据最近的动态调度的同一个PDSCH组的PDSCH(包括额外的PDCCH指示的PDSCH)的NFI确定(或者根据激活DCI确定)，即PDSCH2所属的PDSCH组根据PDCCH1的指示确定为PDSCH组0，其中PDSCH2对应的NFI根据PDSCH1的NFI确定，即NFI＝0。
PDSCH3前检测到相应的额外的PDCCH，指示了PDSCH3对应的PDSCH组为PDSCH组0，NFI＝1，因此在PUCCH3上UE仅需要反馈PDSCH3和PDSCH4的HARQ-ACK，而不要反馈PDSCH1和PDSCH2的HARQ-ACK。
而对于PDSCH6，由于其没有收到相应的额外的PDCCH，PDSCH6所属的PDSCH组按照激活PDCCH确定，即PDSCH组0，NFI按照之前同PDSCH组动态调度的PDSCH5的NFI确定，即NFI＝0，因此UE需要在PUCCH4上反馈PDSCH5和PDSCH6的HARQ-ACK。
实施例四
如图9所示，在每个没有对应的PDCCH的PDSCH(例如SPS PDSCH)传输时携带一些信息，该信息可以包括以下至少一项：
(1)该PDSCH所属PDSCH组；
(2)该PDSCH对应的NFI；
(3)该PDSCH对应的DAI；
(4)另一个PDSCH组的HARQ-ACK触发域；
(5)该PDSCH到HARQ-ACK反馈的定时；
(6)PUCCH资源指示；
(7)调制与编码策略(Modulation and Coding Scheme，MCS)；
(8)冗余版本(Redundancy Version，RV)。
可选地，上述信息可以和PDSCH上的数据信息一起编码和速率匹配，或者也可以分别编码，并按照既定规则映射在PDSCH的特定位置上。UE根据解码该PDSCH上的信息确定其所属的PDSCH组和/或对应的NFI和/或DAI。
需要说明的是，上述实施例中，如果UE是在高层配置的PUCCH资源上反馈HARQ-ACK(当UE只反馈没有PDCCH的PDSCH的HARQ-ACK，或 者是当UE只反馈没有PDCCH的PDSCH的HARQAC-CK且没有额外信息(包括额外的PDCCH或承载在PDSCH上的信息)指示UE反馈HARQ-ACK的PUCCH资源时)，则UE只反馈该没有PDCCH调度的PDSCH的HARQ-ACK，而不需要反馈该PDSCH组的所有PDSCH的HARQ-ACK。
实施例五
如图10所示，PDCCH1激活一个下行SPS，PDSCH1是激活后的第一次PDSCH传输，其PDSCH组和NFI按照对应的PDCCH即PDCCH1中的指示确定，PDSCH2、PDSCH3、PDSCH6分别是之后周期的PDSCH传输，没有对应的PDCCH，UE按照协议规定或者RRC配置，将所有没有PDCCH调度的PDSCH作为一个PDSCH组(例如PDSCH组2，G＝2)(如果UE有多个下行SPS配置，可以包括所有下行SPS配置对应的PDSCH)，PDCCH中包括两比特触发域(假设总共有三个PDSCH组，其中PDSCH组0，PDSCH组1用于有PDCCH动态调度的PDSCH，PDSCH组2用于没有PDCCH的PDSCH)触发除当前调度PDSCH组之外的PDSCH组的HARQ-ACK传输。
例如，最高比特位表示动态调度的另一组，最低比特位表示SPS PDSCH组，图中PDCCH3中T＝01，则表示触发了SPS PDSCH组的HARQ-ACK反馈，而每个SPS PDSCH没有对应的NFI，UE根据SPS PDSCH的接收时间与触发后反馈HARQ-ACK之间的时间间隔确定反馈之前接收的哪些SPS PDSCH的HARQ-ACK(可以是SPS PDSCH结束位置至触发SPS PDSCH HARQ-ACK反馈的PDCCH起始位置之间的间隔，也可以是SPS PDSCH结束位置至触发后反馈SPS PDSCH HARQ-ACK的PUCCH起始位置之间的间隔)，例如RRC配置或协议规定时间T，对于每个SPS PDSCH，UE将保存其对应的SPS HARQ-ACK，直到T之后，UE将清除不再反馈该SPS PDSCH对应的HARQ-ACK。
例如，图中PUCCH2和PUCCH3均没有传输成功，基站在触发SPS PDSCH组的HARQ-ACK传输时，如果没有时间限制，对于SPS PDSCH的HARQ-ACK，UE将在PUCCH4上反馈PDSCH2、PDSCH3和PDSCH6的HARQ-ACK(还有动态调度的PDSCH4、PDSCH5 HARQ-ACK)，但是如果有时间限制(假设等于2个下行SPS周期)，由于PDSCH2到PUCCH4的时 间超出时间限制，UE只需反馈PDSCH3和PDSCH6的HARQ-ACK(还有动态调度的PDSCH4、PDSCH5 HARQ-ACK)。
参见图11，本公开实施例还提供一种终端，该终端1100包括：
确定模块1101，用于根据第一信息，确定第一PDSCH所属的PDSCH组，和/或，第一PDSCH对应的新确认反馈组指示NFI或下行分配指示DAI；其中，所述第一PDSCH为没有对应物理下行控制信道PDCCH的PDSCH；
所述第一信息包括以下至少一项：
(1)高层信令，例如RRC信令指示的信息；
(2)所述第一PDSCH对应的激活DCI的指示；
(3)额外的PDCCH承载的信息；
(4)协议约定的信息；
(5)所述第一PDSCH承载的信息；
可选地，第一PDSCH承载的信息可以包括以下至少一项：(a)所述第一PDSCH所属PDSCH组；(b)所述第一PDSCH对应的NFI；(c)所述第一PDSCH对应的DAI；(d)第二PDSCH组的HARQ-ACK触发域，所述第二PDSCH组与所述第一PDSCH所属PDSCH组不同；(e)所述第一PDSCH到HARQ-ACK反馈的定时；(f)PUCCH资源指示；(g)调制与编码策略；(h)冗余版本。
(6)第二PDSCH对应的NFI或DAI，第二PDSCH有对应的PDCCH，第二PDSCH是第一PDSCH之前最近的一个PDSCH，且第二PDSCH与第一PDSCH所属同一个PDSCH组。
在一些实施方式中，终端1100还可以包括：发送模块，用于根据第一PDSCH所属的PDSCH组，和/或，所述第一PDSCH对应的NFI或DAI，传输第一PDSCH的HARQ-ACK。
在一些实施方式中，第一PDSCH所属的PDSCH组为第一PDSCH组，所述第一PDSCH组包括没有对应PDCCH的PDSCH，或者对应的PDCCH中没有分组指示的PDSCH。
在一些实施方式中，确定模块1101通过以下方式确定第一PDSCH所属的PDSCH组：
如果没有收到额外的PDCCH承载的信息，则根据第一PDSCH对应的激活DCI的指示或者按照协议约定的信息或者高层信令指示的信息，确定所述第一PDSCH所属的PDSCH组；否则，根据接收到的额外的PDCCH承载的信息，确定所述第一PDSCH所属的PDSCH组。
在一些实施方式中，确定模块1101通过以下任意一种方式确定第一PDSCH对应的NFI或DAI：
方式一：如果没有收到额外的PDCCH承载的信息，则根据第一PDSCH对应的激活DCI的指示，确定所述第一PDSCH对应的NFI或DAI；否则，根据接收到的额外的PDCCH承载的信息，确定所述第一PDSCH对应的NFI或DAI；
方式二：如果没有收到额外的PDCCH承载的信息，根据第二PDSCH对应的NFI或DAI，确定所述第一PDSCH对应的NFI或DAI；否则，根据接收到的额外的PDCCH承载的信息，确定所述第一PDSCH对应的NFI或DAI。
本公开实施例提供的终端，可以执行上述如图5所示的实施例，其实现原理和技术效果类似，本实施例此处不再赘述。
如图12所示，图12所示的终端1200包括：至少一个处理器1201、存储器1202、至少一个网络接口1204和用户接口1203。终端1200中的各个组件通过总线系统1205耦合在一起。可理解，总线系统1205用于实现这些组件之间的连接通信。总线系统1205除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图12中将各种总线都标为总线系统1205。
其中，用户接口1203可以包括显示器、键盘或者点击设备(例如，鼠标，轨迹球(trackball)、触感板或者触摸屏等。
可以理解，本公开实施例中的存储器1202可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)， 其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本公开实施例描述的系统和方法的存储器1202旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中，存储器1202保存了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集：操作系统12021和应用程序12022。
其中，操作系统12021，包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序12022，包含各种应用程序，例如媒体播放器(Media Player)、浏览器(Browser)等，用于实现各种应用业务。实现本公开实施例方法的程序可以包含在应用程序12022中。
在本公开的一个实施例中，通过调用存储器1202保存的程序或指令，具体的，可以是应用程序12022中保存的程序或指令，执行时实现以上图5所示方法所述的步骤。
本公开实施例提供的终端，可以执行上述图5所示方法实施例，其实现原理和技术效果类似，本实施例此处不再赘述。
结合本公开公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以由在处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(Random Access Memory，RAM)、闪存、存储器(Read-Only Memory，ROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至 处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以携带在专用集成电路(application specific integrated circuit，ASIC)中。另外，该ASIC可以携带在核心网接口设备中。当然，处理器和存储介质也可以作为分立组件存在于核心网接口设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本公开所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本公开的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本公开的具体实施方式而已，并不用于限定本公开的保护范围，凡在本公开的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本公开的保护范围之内。
本领域内的技术人员应明白，本公开实施例可提供为方法、系统、或计算机程序产品。因此，本公开实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开实施例是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本公开实施例进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开实施例的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (11)

  1. 一种物理下行共享信道PDSCH处理的方法，其特征在于，包括：
    根据第一信息，确定第一PDSCH所属的PDSCH组，和/或，所述第一PDSCH对应的新确认反馈组指示NFI或下行分配指示DAI；
    其中，所述第一PDSCH为没有对应物理下行控制信道PDCCH的PDSCH；
    所述第一信息包括以下至少一项：
    高层信令指示的信息；
    所述第一PDSCH对应的激活下行控制信息DCI的指示；
    额外的PDCCH承载的信息；
    协议约定的信息；
    所述第一PDSCH承载的信息；
    第二PDSCH对应的NFI或DAI，所述第二PDSCH有对应的PDCCH，所述第二PDSCH是所述第一PDSCH之前最近的一个PDSCH，且所述第二PDSCH与所述第一PDSCH所属同一个PDSCH组。
  2. 根据权利要求1所述的方法，其特征在于，所述第一PDSCH所属的PDSCH组为第一PDSCH组，所述第一PDSCH组中的PDSCH没有对应PDCCH。
  3. 根据权利要求1所述的方法，其特征在于，根据第一信息，确定所述第一PDSCH所属的PDSCH组，包括：
    如果没有收到所述额外的PDCCH承载的信息，则根据所述第一PDSCH对应的激活DCI的指示或者按照协议约定的信息或者高层信令指示的信息，确定所述第一PDSCH所属的PDSCH组；否则，根据接收到的所述额外的PDCCH承载的信息，确定所述第一PDSCH所属的PDSCH组。
  4. 根据权利要求1所述的方法，其特征在于，根据第一信息，确定所述第一PDSCH对应的NFI或DAI，包括：
    如果没有收到所述额外的PDCCH承载的信息，则根据所述第一PDSCH对应的激活DCI的指示，确定所述第一PDSCH对应的NFI或DAI；否则，根据接收到的所述额外的PDCCH承载的信息，确定所述第一PDSCH对应的 NFI或DAI；
    或者，
    如果没有收到所述额外的PDCCH承载的信息，根据所述第二PDSCH对应的NFI或DAI，确定所述第一PDSCH对应的NFI或DAI；否则，根据接收到的所述额外的PDCCH承载的信息，确定所述第一PDSCH对应的NFI或DAI。
  5. 根据权利要求1所述的方法，其特征在于，所述第一PDSCH承载的信息包括以下至少一项：
    所述第一PDSCH所属PDSCH组；
    所述第一PDSCH对应的NFI；
    所述第一PDSCH对应的DAI；
    第二PDSCH组的HARQ-ACK触发域，所述第二PDSCH组与所述第一PDSCH所属PDSCH组不同；
    所述第一PDSCH到HARQ-ACK反馈的定时；
    物理上行控制信道PUCCH资源指示；
    调制与编码策略；
    冗余版本。
  6. 一种终端，其特征在于，包括：
    确定模块，用于根据第一信息，确定第一PDSCH所属的PDSCH组，和/或，所述第一PDSCH对应的NFI或DAI；
    其中，所述第一PDSCH为没有对应PDCCH的PDSCH；
    所述第一信息包括以下至少一项：
    高层信令指示的信息；
    所述第一PDSCH对应的激活DCI的指示；
    额外的PDCCH承载的信息；
    协议约定的信息；
    所述第一PDSCH承载的信息；
    第二PDSCH对应的NFI或DAI，所述第二PDSCH有对应的PDCCH，所述第二PDSCH是所述第一PDSCH之前最近的一个PDSCH，且所述第二 PDSCH与所述第一PDSCH所属同一个PDSCH组。
  7. 根据权利要求6所述的终端，其特征在于，所述第一PDSCH所属的PDSCH组为第一PDSCH组，所述第一PDSCH组中的PDSCH没有对应PDCCH。
  8. 根据权利要求6所述的终端，其特征在于，所述确定模块通过以下方式确定所述第一PDSCH所属的PDSCH组：
    如果没有收到所述额外的PDCCH承载的信息，则根据所述第一PDSCH对应的激活DCI的指示，确定所述第一PDSCH所属的PDSCH组；否则，根据接收到的所述额外的PDCCH承载的信息，确定所述第一PDSCH所属的PDSCH组。
  9. 根据权利要求6所述的终端，其特征在于，所述确定模块通过以下任意一种方式确定所述第一PDSCH对应的NFI或DAI：
    如果没有收到所述额外的PDCCH承载的信息，则根据所述第一PDSCH对应的激活DCI的指示，确定所述第一PDSCH对应的NFI或DAI；否则，根据接收到的所述额外的PDCCH承载的信息，确定所述第一PDSCH对应的NFI或DAI；
    如果没有收到所述额外的PDCCH承载的信息，根据所述第二PDSCH对应的NFI或DAI，确定所述第一PDSCH对应的NFI或DAI；否则，根据接收到的所述额外的PDCCH承载的信息，确定所述第一PDSCH对应的NFI或DAI。
  10. 一种终端，其特征在于，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如权利要求1至5中任一项所述的物理下行共享信道处理的方法的步骤。
  11. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至5中任一项所述的物理下行共享信道处理的方法的步骤。
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