CN103796286A

CN103796286A - Method and apparatus for controlling UE to monitor carrier wave

Info

Publication number: CN103796286A
Application number: CN201210430774.9A
Authority: CN
Inventors: 常俊仁; 黄曲芳; 李亚娟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Guangdong Gaohang Intellectual Property Operation Co ltd; Haining Huangwan Town Asset Management Co ltd
Priority date: 2012-11-01
Filing date: 2012-11-01
Publication date: 2014-05-14
Anticipated expiration: 2032-11-01
Also published as: WO2014067482A1; CN103796286B

Abstract

An embodiment of the invention provides a method and apparatus for controlling UE to monitor a carrier wave, relates to the communication field and is to reduce the power consumption of the UE and improve user experience. The method comprises a first base station sends a first indication message to the UE so as to indicate the UE to stop monitoring all or partial downlink control information DCI of a dedicated search space (DSS) of a first carrier wave of the first base station; a second base station sends a control message to the UE through data radio bearing (DRB) of a second carrier wave so as to control the UE; and the first base station and the second base station jointly provide service to the UE. The method and apparatus for controlling the UE to monitor the carrier wave are suitable for the scene that the base stations interact with the UE.

Description

Method and device for controlling UE to monitor carrier waves

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for controlling UE to monitor a carrier.

Background

With the development of mobile communication technology, the transmission rate and the service quality that can be provided by the system are higher and higher, and the user service also puts higher and higher requirements on the transmission rate. Currently, The 3GPP (The 3rd Generation Partnership Project) introduces a CA (Carrier Aggregation) technology to ensure The transmission rate of a general user and provide a higher throughput for a part of users, and simultaneously avoid a large increase in configuration bandwidth.

With the Carrier aggregation technology, a UE (User Equipment) can simultaneously use multiple CCs (Component carriers) for uplink and downlink communication, thereby supporting high-speed data transmission. When the user rate is reduced, part of the component carriers can be released, and only one resident carrier is reserved. The system can provide the released part of carrier resources to other users for use, thereby achieving the purpose of flexible and dynamic transmission.

The Carrier Aggregation can be classified into intra-band CA (intra-band Aggregation) and inter-band CA (inter-band Aggregation). For intra-band CA, carriers in the same frequency band are aggregated, so that the carrier coverage in the intra-band CA can be kept consistent. For inter-band CA, carriers of different frequency bands are aggregated. Because the carrier coverage of the low frequency band is larger and the carrier coverage of the high frequency band is smaller, the carrier coverage in the inter-band CA is inconsistent.

If the inter-band CA carrier aggregation method is adopted, for a high-frequency band carrier, for example, a carrier of 3.5GHz or 6GHz, a larger bandwidth may be allocated for data transmission, but the coverage area is smaller, and in the process of moving the UE, the UE needs to frequently perform handover or cell reselection, thereby increasing the power consumption of the UE and lowering the user experience. In order to avoid frequent handover of the UE, a heterogeneous network may be adopted in the prior art to serve the UE, that is, the UE is served by both the macro base station and the small base station. The macro base station performs wide coverage and is responsible for the transmission of UE control signals and the transmission of some low data rate data. The small base station only enhances the data plane service, and mainly transmits high-speed data without sending control signaling. In this scenario, the UE needs to monitor the scheduling information of the macro base station, but this monitoring also consumes a certain power consumption.

Disclosure of Invention

The embodiment of the invention provides a method and a device for controlling UE to monitor a carrier, which are used for reducing the power consumption of the UE and improving the user experience.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides a method for controlling a UE to monitor a carrier, including: a first base station sends a first indication message to the UE to indicate the UE to stop monitoring all or part of Downlink Control Information (DCI) of a Dedicated Search Space (DSS) of a first carrier of the first base station; the second base station sends a control message to the UE through a Data Radio Bearer (DRB) of a second carrier so as to control the UE; the first base station and the second base station jointly provide service for the UE.

In a second aspect, an embodiment of the present invention provides a method for controlling a UE to monitor a carrier, including: receiving a first indication message sent by a first base station; the first indication message is used for indicating the UE to stop monitoring all or part of downlink control information DCI of the dedicated search space DSS of the first carrier; according to the first indication message, stopping monitoring all or part of DCI of the DSS; receiving a control message for controlling the UE, which is sent by a second base station, through a Data Radio Bearer (DRB) of a second carrier; the first base station and the second base station jointly provide service for the UE.

In a third aspect, an embodiment of the present invention provides a communication system for controlling a UE to monitor a carrier, where the communication system includes: a first base station and a second base station; the first base station is configured to send a first indication message to the UE to indicate that the UE stops monitoring all or part of downlink control information DCI of a dedicated search space DSS of a first carrier of the first base station; the second base station is configured to send a control message to the UE through a data radio bearer DRB of a second carrier to control the UE; the first base station and the second base station jointly provide service for the UE.

In a fourth aspect, an embodiment of the present invention provides a user equipment UE, including: a receiving and sending unit, configured to receive a first indication message sent by a first base station; the first indication message is used for indicating the UE to stop monitoring all or part of downlink control information DCI of the dedicated search space DSS of the first carrier; a processing unit, configured to stop monitoring all or part of DCI of the DSS according to the first indication message received by the transceiving unit; the processing unit is further configured to receive, through a data radio bearer DRB of a second carrier, a control message sent by a second base station and used for controlling the UE; the first base station and the second base station jointly provide service for the UE.

The embodiment of the invention provides a method and a device for controlling UE to monitor carriers. At this time, the second base station sends a control message to the UE through the DRB of the second carrier to control the UE, and the first base station and the second base station together provide service for the UE. Therefore, the UE does not need to monitor all or part of DCI of the DSS of the first base station all the time, and the first base station can send the control signaling to the UE through the DRB of the second carrier of the second base station, so that the power consumption of the UE is reduced, and the user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a method for controlling a UE to monitor a carrier according to an embodiment of the present invention;

fig. 2 is a schematic diagram of another method for controlling a UE to monitor a carrier according to an embodiment of the present invention;

fig. 3 is a schematic diagram of another method for controlling a UE to monitor a carrier according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an example of a method for controlling a UE to monitor a carrier according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an example of another method for controlling a UE to monitor a carrier according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating another method for controlling a UE to monitor a carrier according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another communication system for controlling a UE to monitor a carrier according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a UE according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another UE according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a system for controlling a UE to monitor a carrier according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a method for controlling a UE (User Equipment) to monitor a carrier, as shown in fig. 1, including:

101. the first base station sends a first indication message to the UE to indicate the UE to stop monitoring all or part of DCI (Downlink Control Information) of a DSS (UE-specific Search Space) of a first carrier of the first base station.

Wherein the first indication message is used for indicating the UE to stop monitoring all or part of downlink control information DCI of the dedicated search space DSS of the first carrier.

Specifically, when the UE moves to the coverage of the second base station, and the first base station determines that the UE does not need to monitor all or part of DCI of the DSS, the first indication message is sent to the UE.

Further, the first indication message carries the first identification information. Wherein the first identification information is used for marking DCI of the DSS which the UE stops monitoring.

Optionally, the partial DCI includes an uplink DCI or a downlink DCI, and the first identification information includes: information of uplink DCI or information of downlink DCI.

The uplink DCI refers to DCI for allocating an uplink resource. The downlink DCI refers to DCI for allocating downlink resources.

Or, the partial DCI includes DCI of at least one format, and the first identification information includes: sequence number information of the DCI of at least one format.

The sequence number information of the DCI of the at least one format is sequence number information of the DCI of the at least one direction information. For example, the sequence number information of the uplink DCI.

Further, the first indication message may be a DCI message for deactivating the DSS of the first carrier, or may be a downlink BSR (Buffer State Report) message. The downlink BSR message is used to record the data amount corresponding to the UE and to be sent by the first base station.

It should be noted that the first indication message may also be other messages, and the present invention is not limited to this.

It should be noted that the first carrier of the first base station may be a primary carrier of the UE.

102. And the second base station sends a control message to the UE through a Data Radio Bearer (DRB) of a second carrier so as to control the UE.

Specifically, after the first base station sends the first indication message to the UE, the first base station does not send the control message to the UE through all or part of DCI of the DSS of the first carrier. The first base station sends a control message to be sent to the UE to the second base station, and the second base station sends the control message to the UE through a DRB (Data Radio Bearer) so as to control the UE.

It should be noted that the controlling the UE may include: the control of measurement, the control of handover, the control of cell reselection, the control of parameter configuration of each layer and the control in the aspect of bearer management, and may also be the control in other aspects, which is not limited in the present invention.

103. The first base station and the second base station jointly provide service for the UE.

Wherein the service comprises: data services and signaling services.

Specifically, under the condition that the UE stops monitoring the partial DCI of the DSS of the first carrier of the first base station, after the first base station sends the control message to the UE through the second base station, both the first base station and the second base station may provide data service for the UE, and the first base station provides signaling service for the UE.

For example, the first base station communicates downlink data with the UE, and the second base station communicates uplink data with the UE. The second base station may forward uplink data sent by the UE to the first base station.

Under the condition that the UE stops monitoring all DCI of the DSS of the first carrier wave of the first base station, after the first base station sends a control message to the UE through the second base station, the first base station provides signaling service for the UE, and the second base station provides data service for the UE.

The embodiment of the invention provides a method for controlling UE to monitor carriers, wherein a first base station sends a first indication message to the UE to indicate the UE to stop monitoring all or part of DCI of DSS of a first carrier of the first base station after receiving the first indication message. At this time, the second base station sends a control message to the UE through the DRB of the second carrier to control the UE, and the first base station and the second base station provide data service for the UE together. Therefore, the UE does not need to monitor all or part of DCI of the DSS of the first base station all the time, and the first base station can send the control signaling to the UE through the DRB of the second carrier of the second base station, so that the power consumption of the UE is reduced, and the user experience is improved.

An embodiment of the present invention provides a method for controlling UE to monitor a carrier, as shown in fig. 2, including:

201. and receiving a first indication message sent by the first base station.

Specifically, under the condition that the UE moves to the coverage of the second base station, if the first base station determines that the UE does not need to monitor a part of DCI of the DSS of the first carrier of the first base station, the first base station sends a first indication message carrying first identification information to the UE, and the UE receives the sent first indication message, and the received first indication message also carries the first identification information. When the UE moves to the coverage of the second base station, if the first base station determines that the UE does not need to monitor all DCI of the DSS of the first carrier wave of the first base station, a first indication message is sent to the UE, and at the moment, the first indication message does not carry any identification information.

Further, the first indication message may be a DCI message deactivating the DSS of the first carrier. The first indication message may also be a downlink BSR message. The downlink BSR message is used to record the data amount corresponding to the UE and to be sent by the first base station.

202. And stopping monitoring all or part of DCI of the DSS according to the first indication message.

Specifically, in the case that the first indication message is a DCI message deactivating a DSS of a first carrier, after receiving the first indication message, if it is detected that the first indication message carries first identification information, the UE stops monitoring a part of DCI of the DSS identified by the first identification information according to the first identification information in the first indication message.

Further, if the first identification information includes: when the DCI Information is uplink, the UE stops transmitting uplink data to the uplink carrier associated with SIB2(System Information Block 2) of the first carrier. That is, the UE stops listening to the uplink DCI of the first carrier. If the first identification information includes: and when the information of the downlink DCI is received, stopping monitoring the first carrier and the downlink DCI according to the first identification information.

And, the UE applies a first DRX (discontinuous reception) mode parameter on the first carrier for discontinuous reception. That is, the UE converts the DRX mode parameter of the first carrier from the second DRX mode parameter to the first DRX mode parameter.

In a conventional LTE (Long Term Evolution of 3 GPP) system, DRX is that when a UE is in an IDLE (IDLE) state, the UE has no RRC connection and no dedicated resource of a user, and therefore mainly monitors scheduling information of common Control messages such as a broadcast message and a paging message, and therefore, as Long as a Long discontinuous reception period is configured for the UE to perform blind detection on DCI of a PDCCH (Physical Downlink Control Channel) Channel, the purpose of discontinuous reception can be achieved. The idle mode DRX parameter refers to a DRX parameter configured by the network for the UE when the UE is in an idle state, and generally includes a DRX cycle and some other parameters used for calculating the UE monitoring time.

Active DRX is also used in association with idle mode DRX, where active DRX is used to ensure that when a UE is active (also referred to as RRC connected), the UE does not monitor DCI on a PDCCH continuously according to a certain period to obtain scheduling information.

In the embodiment of the invention, when the UE operates in the first base station and the second base station, although the UE is in the active state, the UE still monitors the DCI on the first carrier using the DRX parameter of the idle mode, so that the UE can save more power on the first carrier. For example, when stopping monitoring all DCI of DSS of the first carrier, the UE may monitor DCI of the CSS using the idle mode DRX parameters, so that the UE may achieve better power saving effect by using the idle mode DRX parameters than when using the active mode (or referred to as connected state) while still maintaining the RRC connection with the first carrier and still being in the active state.

Wherein the first DRX mode parameter may be a DRX parameter in an idle mode. The idle mode DRX parameter refers to a DRX parameter configured by a network for a UE when the UE is in an idle mode.

The second DRX mode parameter may be a DRX parameter in an active state. The DRX parameters in the active state refer to DRX parameters configured by a network for the UE when the UE is in the active mode.

Optionally, the UE stops feeding back information such as a Channel Quality Indicator (CQI), a PMI, a Rank Indicator (RI), a Precoding Type Indicator (PTI), and the like on an Uplink carrier PUCCH (Physical Uplink Control Channel) and/or a Physical Uplink Shared Channel (PUSCH) associated with the SIB2 of the first carrier.

If the first identification information comprises: and stopping monitoring the partial DCI of the DSS identified by the first identification information according to the first identification information in the first indication message. That is, the monitoring of the DCI identified by the sequence number information of the DCI of the at least one format of the DSS of the first carrier is stopped according to the sequence number information of the DCI of the at least one format.

And if the received first indication message is detected not to carry the first identification information, stopping monitoring all DCI of the DSS of the first carrier wave according to the first indication message.

Further, when the UE stops monitoring all or part of the DCI of the DSS of the first carrier, the UE still keeps monitoring the DCI of the CSS (Common Search Space) of the first carrier, so that the UE can continuously acquire the Common control information of the first base station and maintain the connection with the first base station.

It should be noted that the UE may acquire scheduling information of the common control message, for example, system information, by monitoring the DCI of the CSS. The UE can acquire the professional message and the service data by monitoring the DCI of the DSS. The first base station needs to send the common control message to all UEs served by the first base station through the DCI of the CSS, at this time, the first base station only needs to broadcast the common control message through the DCI of the CSS, all UEs served by the first base station can receive the common control message, and at this time, the first base station may send the common control message only once.

If the UE stops monitoring the DCI of the CSS of the first carrier of the first base station, the first base station needs to send the common control message to each UE served by the first base station, which may cause resource waste and increase the workload of the first base station.

Optionally, the time for monitoring the CSS may be determined according to the DRX parameter of the first DRX mode parameter.

Under the condition that the first indication message is a downlink BSR message, after receiving the downlink BSR message sent by the first base station, the UE may detect the downlink BSR message, and if it is detected that the data amount recorded in the downlink BSR message is not greater than the first threshold, the UE stops monitoring all DCI of the DSS of the first carrier or all downlink DCI, and keeps monitoring the DCI of the CSS of the first carrier. If the data volume recorded in the downlink BSR message is detected to be larger than the first threshold value but not larger than the second threshold value, the UE stops monitoring partial DCI or partial downlink DCI of the DSS of the first carrier, and keeps monitoring the DCI of the CSS of the first carrier. If the data volume recorded in the downlink BSR message is detected to be larger than the second threshold value, the UE keeps monitoring all DCI of the DSS of the first carrier, and monitors the DCI of the CSS of the first carrier.

Or, the UE may also determine whether to monitor the DCI of the first carrier according to the uplink BSR of the UE, and if it is detected that the data amount of the uplink BSR is not greater than the third threshold, the UE stops monitoring all DCIs of the DSS of the first carrier or all uplink DCIs, and keeps monitoring the DCI of the CSS of the first carrier. If the data volume recorded in the uplink BSR message is detected to be larger than the third threshold value and not larger than the fourth threshold value, the UE stops monitoring partial DCI or partial uplink DCI of the DSS of the first carrier, and keeps monitoring the DCI of the CSS of the first carrier. If the data volume recorded in the uplink BSR message is detected to be larger than the fourth threshold value, the UE keeps monitoring all DCI of the DSS of the first carrier, and monitors the DCI of the CSS of the first carrier.

Or, after receiving the downlink BSR message sent by the first base station, the UE may detect the downlink BSR message and the uplink BSR message of the UE itself, and if it is detected that the data volumes recorded in the downlink BSR and the uplink BSR message are not greater than the fifth threshold, the UE stops monitoring all DCI of the DSS of the first carrier, and keeps monitoring DCI of the CSS of the first carrier. And if the data volume recorded in the downlink BSR message and the uplink BSR message is detected to be both larger than the fifth threshold and not larger than the sixth threshold, the UE stops monitoring the DCI of the part of the DSS of the first carrier, and keeps monitoring the DCI of the CSS of the first carrier. Otherwise, the UE keeps monitoring all DCI of the DSS of the first carrier, and monitors DCI of the CSS of the first carrier.

It should be noted that the first threshold, the second threshold, the third threshold, the fourth threshold, the fifth threshold, and the sixth threshold are all preset.

Or, when the UE receives that the downlink BSR sent by the first base station is higher than the seventh threshold, it is determined to monitor both the DCI of the CSS and the DCI of the DS of the first carrier. Otherwise, only the DCI of the CSS of the first carrier is monitored.

Or, when the uplink BSR of the UE is higher than the eighth threshold, determining to monitor both the DCI of the CSS and the DCI of the DSS of the first carrier. Otherwise, only the CSS of the first carrier is monitored, and the DCI of the DSS is not monitored.

Or, when the UE determines that the downlink BSR and the uplink BSR are both higher than the ninth threshold, it determines to monitor both the DCI of the CSS and the DCI of the DSS of the first carrier, otherwise, only the CSS of the first carrier is monitored, but the DCI of the DSS is not monitored.

It should be noted that the seventh threshold, the eighth threshold, and the ninth threshold are all preset.

203. And receiving a control message for controlling the UE, which is sent by the second base station, through a Data Radio Bearer (DRB) of the second carrier.

Specifically, after stopping monitoring all or part of DCI of the DSS of the first carrier of the first base station, the UE monitors all or part of DCI of the DSS of the second carrier, and receives, by using the data radio bearer DRB of the second carrier, a control message for controlling the UE, which is sent by the second base station.

Wherein the scheduling information of the control message is obtained from all or part of DCI of the DSS of the second carrier.

The scheduling information is information for indicating where to acquire data.

204. The first base station and the second base station jointly provide service for the UE.

Wherein the service comprises: data services and signaling services.

The embodiment of the invention provides a method for controlling UE to monitor carriers, wherein the UE stops monitoring all or part of DCI of DSS of a first carrier of a first base station after receiving a first indication message. And receiving the control message sent by the second base station through the DRB of the second carrier. And at this time, the first base station and the second base station provide data service for the UE together. Therefore, the UE does not need to monitor all or part of DCI of the DSS of the first base station all the time, and the first base station can send the control message to the UE through the DRB of the second carrier of the second base station, so that the power consumption of the UE is reduced, and the user experience is improved.

The embodiment of the invention provides a method for controlling UE to monitor carrier waves, which comprises the following steps:

it should be noted that, in the embodiment of the present invention, for a process in which the UE moves in the coverage of the first base station and the second base station, the first base station determines to trigger the UE to stop monitoring a scenario of partial DCI of the DSS of the first carrier.

The specific steps are as follows, as shown in fig. 3.

301. And the first base station performs data interaction with the UE.

Specifically, when the UE is only within the coverage of the first base station, the UE performs data interaction with the first base station.

The UE needs to periodically monitor the CSS and DSS of the first carrier, so as to obtain the scheduling information of the common control message through the CSS, and obtain the scheduling information of the dedicated message and the service data through the DSS, that is, the UE may perform receiving and sending of control messages such as an RRC message through the first carrier of the first base station.

302. The first base station acquires a signal quality message of a first carrier of the first base station.

Specifically, the UE may send a detection signal to the first base station through the first carrier of the first base station, and at this time, after receiving the detection signal, the first base station detects the signal quality of the detection signal that passes through the first carrier, so as to obtain the signal quality of the first carrier.

The detection signal is a signal which is sent by the UE through a carrier on the base station side and is used for detecting the signal quality of the carrier on the base station side by the base station side.

The base station side refers to the first base station or the second base station. The base station side carrier refers to a first carrier of a first base station or a second carrier of a second base station.

Optionally, the detection signal is an SRS (Sounding Reference signal), and at this time, the first base station may obtain a signal quality message of the SRS of the first carrier.

The first base station may also send a downlink reference signal to the UE, and after receiving the downlink reference signal, the UE acquires a CQI (Channel quality indicator) of the first carrier according to the downlink reference signal, and sends the acquired CQI of the first carrier to the first base station, where the first base station acquires a signal quality message of the CQI of the first carrier.

It should be noted that the Signal Quality message acquired by the first base station may also be other Signal qualities, for example, the Signal Quality of a PMI (Precoding Matrix Indicator), and layer 3 measurement results, for example, RSRP (Reference Signal Receiving power), RSRQ (Reference Signal Receiving Quality), and the like, which is not limited in this invention.

303. And the first base station sends a trigger message to the UE, and the UE receives the trigger message.

Wherein the trigger message is used for triggering the UE to send the detection signal.

Specifically, the first base station sends a trigger message to the UE to trigger the UE to send a detection signal used by the second base station for detecting signal quality by using the second carrier of the second base station.

Further, the detection signal is an SRS signal.

304. The first base station sends indication information to the second base station, and the second base station receives the indication information.

Wherein the indication information is used for indicating to the second base station that the UE is to send a detection signal to the second base station.

305. And the UE sends a detection signal to the second base station through the second carrier of the second base station. The second base station receives the detection signal.

Optionally, the detection signal is an SRS signal.

Note that, if the second base station does not perform signal quality detection after receiving the detection signal, after step 305 is completed, step 307 is directly performed. If the second base station needs to perform signal quality detection after receiving the detection signal, after the step 305 is completed, the step 306 is executed.

306. And the second base station performs signal quality detection on the detection signal.

Specifically, the second base station performs signal quality detection according to the received detection signal, thereby acquiring a signal quality message of the second carrier of the second base station.

And if the detection signal is the SRS signal, the second base station performs signal quality detection according to the received SRS signal, thereby acquiring a signal quality message.

307. The first base station sends a signal quality request message to the second base station. The second base station receives the signal quality request message.

Optionally, the first base station sends a signal quality request message of the SRS of the second carrier to the second base station.

308. And the second base station sends the signal quality message of the communication between the second base station and the UE to the first base station, and the first base station receives the signal quality message sent by the second base station.

Specifically, if the second base station performs signal quality detection on the detection signal, after receiving the signal quality request message, the second base station sends a signal quality message of communication between the UE and the second base station to the first base station, that is, the first base station receives the signal quality message of communication between the UE and the second base station from the second base station.

If the second base station does not perform signal quality detection on the detection signal, when receiving a signal quality request message sent by the first base station, forwarding the received detection signal to the first base station to instruct the first base station to acquire a signal quality message for communication between the UE and the second base station according to the detection signal. And after receiving the detection signal forwarded by the second base station, the first base station performs signal quality detection on the detection signal, so as to obtain a signal quality message of the communication between the UE and the second base station, namely the signal quality message of the second carrier wave of the second base station.

Optionally, the signal quality message includes: and detecting a signal quality message obtained by the sounding reference information (SRS) sent by the UE to the second base station.

309. The first base station decides to trigger the UE to stop listening to the partial DCI of the DSS.

Specifically, the first base station may decide to trigger the UE to stop listening to the partial DCI of the DSS of the first carrier according to the signal quality message.

Wherein the signal quality message comprises: the signal quality message of the UE communicating with the second base station is the signal quality message of the second carrier of the second base station.

Further, the signal quality message may further include: a signal quality message of the first carrier.

Specifically, the signal quality message includes only: a signal quality message of a second carrier, and the first base station may decide to trigger the UE to stop monitoring the partial DCI of the DSS of the first carrier according to the signal quality message of the second carrier. Optionally, the signal quality message includes: and detecting a signal quality message obtained by detecting sounding reference information (SRS) sent by the UE to a second base station, or detecting a Channel Quality Indicator (CQI) of the second base station by the UE.

For example, the first base station may detect that the signal quality of the second-wave signal quality message is not less than the tenth threshold, which indicates that there is a second base station with better signal quality near the UE, and may trigger the UE to stop monitoring the partial DCI of the DSS of the first carrier by sending a control message to the UE through the second base station.

It should be noted that, the partial DCI of the DSS of the first carrier may be an uplink DCI of the DSS of the first carrier, or may be a downlink DCI of the DSS of the first carrier, which is not limited in this embodiment of the present invention.

It should be noted that the tenth threshold is preset.

It should be noted that the signal quality of the signal quality message of the second carrier detected by the first base station may also be detected in other manners, which is not limited in the present invention.

If the signal quality message includes: the first base station may determine to trigger the UE to stop monitoring the partial DCI of the DSS of the first carrier according to the signal quality message of the first carrier and the signal quality message of the second carrier.

Optionally, the signal quality message includes: a signal quality of the SRS over the second carrier and a signal quality of the SRS over the first carrier; alternatively, the signal quality message includes: the signal quality of the SRS passing through the second carrier and the CQI of the first carrier; alternatively, the signal quality message includes: CQI of the second carrier and CQI of the first carrier.

For example, the signal quality of the signal quality message of the first carrier and the signal quality of the signal quality message of the second carrier may be compared, and if the signal quality of the second carrier satisfies a certain condition, for example, the difference between the signal quality of the second carrier and the signal quality of the first carrier is greater than an eleventh threshold, the UE is triggered to stop the partial DCI of the DSS of the first carrier. And if the difference between the signal quality of the second carrier of the second base station and the signal quality of the first carrier is not greater than the eleventh threshold value, determining that the UE needs to continue monitoring partial DCI of the DSS of the first carrier.

It should be noted that the eleventh threshold value is preset.

Further, the first base station determines to trigger the UE to stop monitoring the partial DCI of the DSS according to the traffic of the UE.

Specifically, if the traffic volume of the UE is smaller than a certain threshold, the UE may be triggered to stop monitoring the partial DCI of the DSS of the first carrier.

It should be noted that, in all embodiments of the present invention, the first carrier refers to a carrier of the first base station, which is related to controlling mobility management of the UE, RRC connection of the UE, and security parameters.

The first base station is a base station that uses a low-frequency carrier and has a large coverage area. The second base station is a base station which adopts a high-frequency carrier and has a small coverage area.

Illustratively, the signal quality message of the second carrier of the second base station is received by the first base station and is the signal quality message of the SRS.

In the moving process of the UE, when the first base station receives the SRS sent by the UE through the first carrier, the first base station acquires the signal quality of the first carrier by detecting the SRS. And the first base station acquires the signal quality of the second carrier by receiving the SRS signal quality message of the second carrier sent by the second base station or detects the signal quality of the SRS message by receiving the SRS message forwarded by the second base station, thereby acquiring the signal quality condition of the second carrier. At this time, the first base station determines that the UE enters the phase 1 region according to the SRS signal quality message of the second carrier, as shown in fig. 4 and 5, so as to determine that the UE may not need to monitor the uplink DCI of the DSS of the first carrier, trigger the UE to stop monitoring the uplink DCI of the DSS of the first carrier, continue to monitor the downlink DCI of the DSS of the first carrier, and monitor the DCI of the CSS of the first carrier.

310. The method comprises the steps that a first indication message is sent to UE at a first base station, the first indication message carries a first identifier, and the UE receives the first indication message sent by the first base station.

Specifically, refer to step 101 and step 201, which are not described herein again.

311. And the UE stops monitoring partial DCI of the DSS of the first carrier of the first base station according to the first indication message.

Wherein, if the first identification information includes: information of the uplink DCI. At this time, the UE stops monitoring the uplink DCI of the DSS of the first carrier of the first base station according to the first indication message.

If the first identification information includes: and downlink DCI information, at this time, the UE stops monitoring DSS of the first carrier of the first base station and downlink DCI according to the first indication message.

Specifically, refer to step 202, which is not described herein again.

312. And the UE sends response information of the first indication message to the first base station, and the first base station receives the response information of the first indication message.

Specifically, when the first base station transmits the first indication message using the RCC message, the UE may perform feedback determination through the RRC message. When the first base station transmits the first indication message using MAC signaling, the UE may feed back HARQ (Hybrid Automatic repeat request) information to the first base station, so that the first base station determines whether the UE correctly receives the first indication message. If the first base station uses the physical layer signaling to send the first indication message, the UE may feed back the physical layer response information to the first base station, so that the first base station determines whether the UE correctly receives the first indication message.

313. The first base station sends a DRB establishment message to the UE and/or a second base station, so that the DRB for transmitting the control message is established between the UE and the second base station. The UE and/or the second base station receives the DRB establishment message.

314. And the UE establishes a DRB for transmitting the control message with the second base station.

315. And the first base station sends the control message of the UE to the second base station so as to instruct the second base station to send the control message of the UE to the UE through the DRB.

Specifically, when the first base station needs to send a control message to the UE, the first base station sends the control message of the UE to the second base station, and the second base station sends the control message to the UE.

316. And the second base station sends a control message to the UE through a Data Radio Bearer (DRB) of a second carrier so as to control the UE.

Specifically, after the UE and the second base station establish the DRB, the first base station sends a control message to the UE to the second base station. After receiving the control message, the second base station analyzes that the message is the control message of the UE, and the second base station sends the control message to the UE through the DRB. The UE receives this control message.

Further, if the UE needs to send a control message to the first base station, the UE may send the control message to the second base station through the DRB, so that the second base station sends the control message to the first base station. At this time, the second base station transmits the control message transmitted by the UE to the first base station.

317. Similar to step 103 and step 204, the description is omitted here.

318. The first base station acquires the signal quality information of the first carrier wave and the signal quality information of the second carrier wave of the first base station.

Specifically, the step of obtaining the signal quality information of the first carrier of the first base station is the same as that in step 302, and is not repeated here.

The signal quality information for acquiring the second carrier is the same as step 308, and is not described herein again.

When the UE receives the downlink reference signal sent by the second base station, the UE may detect a channel quality indicator CQI of the second base station according to the downlink reference signal of the second base station.

Optionally, the UE performs downlink communication with the second base station, the UE may obtain the signal quality message of the CQI of the second carrier according to the downlink reference signal of the second base station, and send the signal quality message of the CQI of the second carrier to the first base station, and the first base station receives the signal quality message of the CQI of the second carrier sent by the second base station. At this time, the signal quality message acquired by the first base station further includes: and the UE detects the Channel Quality Indicator (CQI) of the second base station.

It should be noted that the UE may also obtain other Signal Quality messages of the second carrier, for example, a Signal Quality message of a PMI (Precoding Matrix Indicator), a layer 3 measurement result, for example, RSRP (Reference Signal Receiving Power), RSRQ (Reference Signal Receiving Quality Reference Signal Receiving) and the like, which is not limited in this invention.

319. And the first base station determines to monitor part of DCI of the DSS of the first carrier again according to the acquired signal quality message of the first carrier and the acquired signal quality message of the second carrier of the first base station.

320. And the UE receives a second indication message sent by the first base station or the second base station to indicate the UE to monitor all or part of DCI of the DSS of the first carrier again. And the UE receives a second indication message sent by the first base station or the second base station.

And the second indication message carries second identification information. The second identification information is used for marking the information that the UE monitors DCI of the DSS of the first carrier again.

Optionally, the second identification information may include: sequence number information of the DCI of at least one format. The second identification information may also include: the direction information of the partial DCI, that is, the second identification information includes: downlink DCI information or uplink DCI information.

Specifically, if the first base station determines that the UE needs to monitor a part of DCI of the DSS of the first carrier again, a second indication message is sent to the UE, where the second indication message carries second identification information.

Further, the first base station may send a second indication message to the UE through the second base station.

It should be noted that, when the first base station determines that the UE needs to monitor the uplink DCI of the first carrier of the first base station again under the condition that the UE only stops monitoring the uplink DCI of the first carrier of the first base station, the first base station sends the second indication message carrying the second identification information to the UE. At this time, the second identification information indicates that the UE needs to monitor the uplink DCI of the DSS of the first carrier again.

And under the condition that the UE only stops monitoring the downlink DCI of the first carrier wave of the first base station, the first base station determines that the UE needs to monitor the downlink DCI of the first carrier wave of the first base station again, and the first base station needs to send a second indication message carrying second identification information to the UE through the second base station. At this time, after receiving the second indication message, the second base station sends the second indication message to the UE through the DRB. At this time, the second identification information indicates that the UE needs to monitor the downlink DCI of the DSS of the first carrier again.

321. And the UE monitors the partial DCI of the DSS again according to the second indication message.

Specifically, after receiving the second indication message, the UE detects that the second indication message carries the second identification information, and monitors a part of DCI of the DSS of the first carrier according to the second identification information in the second indication message.

If the second identification information includes: and monitoring the downlink DCI of the DSS of the first carrier again according to the second identification information.

If the second identification information includes: and monitoring the uplink DCI of the DSS of the first carrier again according to the second identification information.

If the second identification information includes: and re-monitoring the DCI corresponding to the sequence number information of the part of the DSS of the first carrier wave of the DCI of the at least one format according to the second identification information.

322. The UE transmits response information of the second indication message.

Specifically, if the first base station uses the RCC message to send the second indication message, the UE may perform feedback determination through the RRC message. When the first base station sends the second indication message using MAC signaling, the UE may feed back HARQ (Hybrid Automatic repeat request) information to the first base station, so that the first base station determines whether the UE correctly receives the second indication message.

Further, the UE may send response information of the second indication message to the first base station through the second base station.

The embodiment of the invention provides a method for controlling UE to monitor carriers, wherein a first base station sends a first indication message carrying first identification information to the UE to indicate the UE to stop monitoring partial DCI of DSS of a first carrier of the first base station according to the first identification information after receiving the first indication message. At this time, the second base station sends a part of control messages of the first base station to the UE through the DRB of the second carrier to control the UE, and the first base station and the second base station provide data service for the UE together. Therefore, the UE does not need to monitor partial DCI of the DSS of the first base station all the time, and the first base station can send the control signaling to the UE through the DRB of the second carrier of the second base station, so that the power consumption of the UE is reduced, and the user experience is improved. Meanwhile, when the first base station determines that the UE needs to monitor the partial DCI of the DSS of the first carrier again, a second indication message is sent to the UE to indicate the UE to monitor the partial DCI of the DSS again, so that the UE can be ensured to correctly receive the received control message, and the user experience is further improved.

it should be noted that the embodiment of the present invention is applicable to a scenario in which the first base station determines to trigger the UE to stop monitoring all DCI of the DSS of the first carrier.

The specific steps are as follows, as shown in fig. 6.

401. The first base station acquires the signal quality information of the first carrier wave and the signal quality information of the second carrier wave of the first base station.

Note that, since the UE cannot detect the CQI signal quality of the second carrier unless the UE performs downlink communication with the second base station, the signal quality message of the second carrier includes: and detecting a signal quality message obtained by the sounding reference information (SRS) sent by the UE to the second base station. After the UE performs downlink communication with the second base station, the UE starts to detect the CQI of the second carrier, and directly sends the signal quality message of the CQI of the second carrier to the first base station or sends the signal quality message of the CQI of the second carrier to the first base station through the second base station. At this time, the signal quality message further includes: and the UE detects the Channel Quality Indicator (CQI) of the second base station.

402. The first base station determines that the UE stops monitoring all DCI of the DSS of the first carrier.

Specifically, the first base station may decide to trigger the UE to stop monitoring the partial DCI of the DSS of the first carrier according to the signal quality message.

If the signal quality message includes only: and a signal quality message of a second carrier, wherein the first base station may decide to trigger the UE to stop monitoring all DCI of the DSS of the first carrier according to the signal quality message of the second carrier.

For example, if the first base station detects that the signal quality of the signal quality message of the second carrier of the second base station is greater than the twelfth threshold, the first base station triggers the UE to stop monitoring all DCI of the DSS of the first carrier at this time.

It should be noted that the twelfth threshold is preset.

If the signal quality message includes: the first base station may determine to trigger the UE to stop monitoring all DCI of the DSS of the first carrier according to the signal quality message of the first carrier and the signal quality message of the second carrier.

For example, the signal quality of the signal quality message of the first carrier and the signal quality of the signal quality message of the second carrier may be compared, and if it is detected that the difference between the signal quality of the second carrier and the signal quality of the first carrier is greater than a thirteenth threshold value, the first base station triggers the UE to stop monitoring all DCI of the DSS of the first carrier.

It should be noted that the thirteenth threshold is preset.

Further, the first base station determines to trigger the UE to stop monitoring all DCI of the DSS according to the traffic of the UE.

As described above, reference is made to fig. 4 and 5. And the UE continues to move, and if the UE moves to the area of the stage 2, the first base station receives the signal quality message of the CQI of the first carrier wave sent by the UE and the signal quality message of the SRS sent by the second base station. And the first base station determines that the UE has entered the core coverage range of the second base station according to the signal quality message of the CQI of the first carrier and the signal quality message of the SRS of the second base station, namely the area of the stage 2. At this time, the first base station decides to trigger the UE to stop monitoring all DCI of the DSS of the first carrier, that is, the first base station decides to trigger the UE to stop monitoring the uplink DCI and the downlink DCI of the DSS of the first carrier. Since the UE has already stopped monitoring the uplink DCI of the DSS of the first carrier when entering the phase 1 region, it is only necessary to stop monitoring the downlink DCI of the DSS of the first carrier. The UE also needs to continue to monitor the DCI of the CSS of the first carrier.

403. The first base station sends a first indication message to the UE, and the UE receives the first indication message sent by the first base station.

404. And the UE stops monitoring all DCI of the DSS of the first carrier of the first base station according to the first indication message.

Specifically, refer to step 202, which is not described herein again.

405. Similar to step 312, further description is omitted here.

406. Similar to step 313, further description is omitted here.

407. Similar to step 314, further description is omitted here.

408. Similar to step 315, further description is omitted here.

409. Similar to step 316, further description is omitted here.

410. Similar to step 317, further description is omitted here.

411. Similar to step 401, further description is omitted here.

412. And the first base station determines to monitor all DCI of the DSS of the first carrier again according to the acquired signal quality information of the first carrier and the acquired signal quality information of the second carrier of the first base station.

413. And the first base station or the second base station sends a second indication message to the UE. The UE receives the second indication message.

Optionally, the second indication message may be a DSS message activating the first carrier, or may be a downlink BSR message.

It should be noted that, at this time, the second indication message does not carry any identification information.

414. And the UE monitors all DCI of the DSS again according to the second indication message.

Specifically, when the second indication message is a DSS message that activates the first carrier, and the UE receives the second indication message, and detects that the received second indication message does not carry the second identification information, it monitors all DCI of the DSS of the first carrier of the first base station according to the second indication message.

Under the condition that the second indication message is a downlink BSR message, after receiving the downlink BSR message sent by the first base station, the UE may detect the data volume of the downlink BSR message, and if it is detected that the data volume recorded in the downlink BSR message is greater than the second threshold, the UE monitors all DCI of the DSS of the first carrier again, and continues to monitor the CSS of the first carrier.

Or, if it is detected that the data size recorded in the uplink BSR message is greater than the fourth threshold, the UE monitors all DCI of the DSS of the first carrier again, and continues to monitor DCI of the CSS of the first carrier.

Or, if the detected data volumes of the uplink BSR message and the downlink BSR message are both greater than the sixth threshold, or one of the detected data volumes of the uplink BSR message and the downlink BSR message is less than the sixth threshold and one is greater than the sixth threshold, or one of the detected data volumes of the uplink BSR message and the downlink BSR message is less than the fifth threshold and one is greater than the fifth threshold, re-monitoring all DCI of the DSS of the first carrier, and continuing to monitor the DCI of the CSS of the first carrier.

Or, when the UE receives that the BSR sent by the first base station is higher than the seventh threshold, it determines to monitor all the DCI of the CSS and the DSS of the first carrier.

Or, when the uplink BSR of the UE is higher than the eighth threshold, it is determined to monitor all the DCI of the CSS and the DSS of the first carrier.

Or, when the UE determines that the downlink BSR and the uplink BSR are both higher than the ninth threshold, it determines to monitor all DCI of the CSS and DSS of the first carrier.

415. And the UE sends response information of the second indication message to the first base station.

Specifically, when the first base station sends the second indication message using the RCC message, the UE may perform feedback determination through the RRC message. When the first base station sends the second indication message using MAC signaling, the UE may feed back HARQ (Hybrid Automatic repeat request) information to the first base station, so that the first base station determines whether the UE correctly receives the second indication message.

Further, the UE applies the second DRX mode parameters on the first carrier such that the UE enters an active state on the first carrier. That is, the UE converts the DRX mode parameters of the first carrier from the first DRX mode parameters to the second DRX mode parameters.

Wherein the second DRX mode parameter is a parameter of DRX in an active state.

Optionally, the UE sends uplink data to an uplink carrier associated with the SIB2 of the first carrier of the first base station.

And the UE feeds back information such as CQI, PMI, RI, PTI and the like to an uplink carrier PUCCH and/or PUSCH associated with the SIB2 of the first carrier of the first base station.

The embodiment of the invention provides a method for controlling UE to monitor carriers, wherein a first base station sends a first indication message to the UE, wherein the first indication message does not carry first identification information so as to indicate the UE to stop monitoring all DCI of DSS of a first carrier of the first base station after receiving the first indication message. At this time, the second base station sends all control messages of the first base station to the UE through the DRB of the second carrier to control the UE, and the first base station and the second base station provide data service for the UE together. Therefore, the UE does not need to monitor all or part of DCI of the DSS of the first base station all the time, and the first base station can send the control signaling to the UE through the DRB of the second carrier of the second base station, so that the power consumption of the UE is reduced, and the user experience is improved. Meanwhile, when the first base station determines that the UE needs to monitor the partial DCI of the DSS of the first carrier again, a second indication message is sent to the UE to indicate the UE to monitor the partial DCI of the DSS again, so that the UE can be ensured to correctly receive the received control message, and the user experience is further improved.

An embodiment of the present invention provides a communication system for controlling UE to monitor a carrier, as shown in fig. 7, including: a first base station 701 and a second base station 702.

The first base station 701 is configured to send a first indication message to the UE to indicate that the UE stops monitoring all or part of downlink control information DCI of a dedicated search space DSS of a first carrier of the first base station.

The first indication message may be a DSS message for deactivating the first carrier, or may be a downlink BRS message. The downlink BSR message is used to record the data amount corresponding to the UE to be sent by the first base station.

Further, the first indication message carries first identification information.

Wherein the first identification information is used for marking DCI of the DSS which the UE stops monitoring.

Optionally, if the partial DCI includes DCI of at least one format, the first identification information may include: sequence number information of the DCI of at least one format.

If the part of the DCI includes uplink DCI or downlink DCI, the first identification information includes: partial DCI direction information. That is, the first identification information includes: information of uplink DCI or information of downlink DCI. For example, the identification information of the DCI includes: the information of the uplink DCI indicates that the UE may stop monitoring the uplink DCI of the DSS.

The uplink DCI refers to DCI for allocating an uplink resource.

The downlink DCI refers to DCI for allocating downlink resources.

A second base station 702, configured to send a control message to the UE through a data radio bearer DRB of a second carrier to control the UE.

The first base station 701 is configured to provide a service for the UE.

Specifically, the first base station 701 may provide signaling services and data services for the UE.

The second base station 702 is configured to provide a service for the UE.

Specifically, the second base station 702 may provide data service for the UE.

The first base station 701 is further configured to send a communication indication message to the UE to indicate that the UE receives the control message through the DRB of the second carrier of the second base station after receiving the communication indication message.

The first base station 701 is further configured to receive a signal quality message of the UE communicating with a second base station.

Wherein the signal quality message comprises: and detecting a signal quality message obtained by the sounding reference information (SRS) sent by the UE to the second base station. The signal quality message further comprises: and the UE detects the Channel Quality Indicator (CQI) of the second base station.

Further, the signal quality message further includes: the method comprises the steps of obtaining a signal quality message through detecting sounding reference information (SRS) sent by the UE to a first base station, and/or detecting a Channel Quality Indicator (CQI) of the first base station by the UE.

The first base station 701 is further configured to determine, according to the signal quality message, to trigger the UE to stop monitoring all or part of DCI of the DSS.

Further, the first base station 701 is further configured to determine to trigger the UE to stop monitoring all or part of DCI of the DSS according to the traffic of the UE.

The first base station 701 is further configured to send a trigger message to the UE to trigger the UE to send a detection signal used by the second base station for detecting signal quality by using the second carrier of the second base station.

Optionally, the detection signal is an SRS signal.

At this time, the first base station 701 is specifically configured to receive, from the second base station, a signal quality message for the UE to communicate with the second base station.

The first base station 701 is further configured to send, by the first base station, a control message of the UE to the second base station, so as to instruct the second base station to send the control message of the UE to the UE through the DRB.

Further, the first base station 701 is further configured to send a DRB setup message to the UE and/or the second base station 702 to instruct to set up the DRB for transmitting the control message between the UE and the second base station.

The first base station 701 is further configured to send a second indication message to the UE to indicate the UE to listen to all or part of DCI of the DSS of the first carrier again.

Or, the second base station 702 is further configured to send a second indication message to the UE to indicate the UE to listen to all or part of the DCI of the DSS of the first carrier again.

The second indication message may be a DSS message for deactivating the first carrier, or a downlink BRS message.

Further, the second indication message carries second identification information.

The second identification information is used for marking the information that the UE needs to monitor the DCI of the DSS of the first carrier again.

The second identification information may include: sequence number information of the DCI of at least one format. The second identification information may also include: direction information of the partial DCI. That is, the second identification information includes: information of uplink DCI or information of downlink DCI.

The embodiment of the invention provides a communication system for controlling UE to monitor carriers, wherein a first base station sends a first indication message to the UE, wherein the first indication message does not carry first identification information so as to indicate the UE to stop monitoring all DCI of DSS of a first carrier of the first base station after receiving the first indication message. At this time, the second base station sends all control messages of the first base station to the UE through the DRB of the second carrier to control the UE, and the first base station and the second base station provide data service for the UE together. Therefore, the UE does not need to monitor all or part of DCI of the DSS of the first base station all the time, and the first base station can send the control signaling to the UE through the DRB of the second carrier of the second base station, so that the power consumption of the UE is reduced, and the user experience is improved. Meanwhile, when the first base station determines that the UE needs to monitor all or part of the DCI of the DSS of the first carrier again, a second indication message is sent to the UE to indicate the UE to monitor all or part of the DCI of the DSS again, so that the UE can be ensured to correctly receive the received control message, and the user experience is further improved.

An embodiment of the present invention provides a UE, as shown in fig. 8, including:

the transceiving unit 801 is configured to receive a first indication message sent by a first base station.

Further, the first indication message carries the first identification information. The first identification information includes information that the UE does not need to monitor partial DCI of the DSS of the first carrier.

The uplink DCI refers to DCI for allocating an uplink resource.

The downlink DCI refers to DCI for allocating downlink resources.

A processing unit 802, configured to stop monitoring all or part of DCI of the DSS according to the first indication message received by the transceiving unit 801.

Specifically, the processing unit 802 is specifically configured to, when the received first indication message carries first identification information, stop monitoring partial DCI of the DSS identified by the first identification information according to the first identification information in the first indication message.

If the first identification information includes: sequence number information of the DCI of at least one format. At this time, the processing unit 802 is specifically configured to stop monitoring the DCI corresponding to the sequence number information of the DCI of the at least one format of the DSS of the first carrier of the first base station according to the first identifier information.

If the first identification information comprises: information of uplink DCI or information of downlink DCI. At this time, the processing unit 802 is specifically configured to stop monitoring the uplink DCI of the DSS according to the first identification information. That is, the uplink data transmission to the uplink carrier associated with the SIB2 of the first carrier is stopped. Or, the processing unit 802 is specifically configured to stop monitoring the downlink DCI of the DSS according to the first identifier information.

The processing unit 802 is specifically configured to, when the received first indication message does not carry the first identification information, stop monitoring all DCI of the DSS of the first carrier of the first base station according to the first indication message.

At this time, the processing unit 802 is further configured to apply the first DRX mode parameter on the first carrier. I.e. the DRX mode parameters of the first carrier are converted from the second DRX mode parameters to the first DRX mode parameters.

The processing unit 802 is further configured to receive a control message sent by the second base station for controlling the UE through a data radio bearer DRB of the second carrier.

The processing unit 802 is specifically configured to monitor all or part of DCI of the DSS of the second carrier, and receive a control message sent by the second base station and used for controlling the UE, by using the data radio bearer DRB of the second carrier.

The processing unit 802 is further configured to obtain a service through the first base station and the second base station.

Wherein, the service includes: signaling services and data services.

Specifically, when the processing unit 802 stops monitoring the DCI of the portion of the DSS of the first carrier of the first base station, the processing unit 802 may obtain the signaling service and the data service from the first base station and obtain the data service from the second base station.

When the processing unit 802 stops monitoring all DCI of the DSS of the first carrier of the first base station, the processing unit 802 may acquire a signaling service from the first base station and acquire a data service from the second base station.

The processing unit 802 is further configured to keep monitoring the DCI of the common search space CSS of the first carrier when the monitoring of all or part of the DCI of the DSS is stopped.

The transceiver unit 801 is further configured to receive a communication indication message sent by the first base station or the second base station.

Wherein the communication indication message is used for indicating the UE to receive the control message through a DRB of a second carrier of the second base station.

Specifically, the processing unit 802 is specifically configured to receive, after receiving the communication indication message, a control message sent by the second base station for controlling the UE through the data radio bearer DRB of the second carrier.

The transceiver unit 801 is further configured to send a detection signal to the second base station by using the second carrier of the second base station, so as to indicate that the second base station detects the signal quality of the detection signal after receiving the detection signal, and send a signal quality message that the second base station communicates with the UE to the first base station.

The transceiver unit 801 is further configured to receive a trigger message sent by the first base station.

The transceiver unit 801 is configured to send a detection signal to the second base station by using the second carrier of the second base station after receiving the trigger message.

Further, the transceiver unit 801 is further configured to transmit a detection signal to the first base station by using the first carrier, so that the first base station detects the detection signal received through the first carrier.

Optionally, the detection signal is an SRS signal.

Furthermore, the transceiver unit 801 is further configured to receive a downlink reference signal sent by the second base station.

The processing unit 802 is further configured to detect a channel quality indicator CQI of a second base station according to a downlink reference signal of the second base station.

The transceiver unit 801 is further configured to send the detected CQI of the second base station to the first base station as the signal quality message.

It should be noted that, if the UE sends the signal quality message of the second carrier to the second base station, the second base station sends the signal quality message of the second carrier to the first base station. If the UE sends the signal quality message of the first carrier of the first base station to the second base station, the second base station sends the signal quality message of the first carrier of the first base station to the first base station.

Further, the transceiver 801 is further configured to receive a DRB setup message sent by the first base station, so as to set up a DRB for transmitting a control message with a second base station.

The processing unit 802 is further configured to establish a data radio bearer DRB for transmitting the control message with the second base station.

Further, the transceiver 801 is further configured to receive a second indication message sent by the first base station or the second base station.

Wherein the second indication message is used for indicating the UE to listen to the all or part of DCI of the DSS of the first carrier again.

And the second indication message carries second identification information.

The second identification information is used for marking the information of partial DCI of the DSS of the first carrier monitored by the UE again.

Optionally, the second identification information includes: downlink DCI information or uplink DCI information.

The second identification information may also include: sequence number information of the at least one format DCI.

Further optionally, the second indication message may be a DSS message activating the first carrier, or may be a downlink BSR message.

The processing unit 802 is further configured to listen to all or part of the DCI of the DSS of the first carrier again according to the second indication message received by the transceiving unit 801.

Specifically, if the second indication message carries second identification information, the processing unit 802 is specifically configured to monitor a part of DCI of the DSS of the first carrier again according to the second identification information in the second indication message.

If the received second indication message does not carry the second identification information, the processing unit 802 is specifically configured to monitor all DCI of the DSS of the first carrier according to the second indication message.

The processing unit 802 is further configured to apply a second DRX mode parameter on the first carrier such that the UE enters an active state on the first carrier.

Wherein the second DRX mode parameter is a DRX parameter in an active state.

The embodiment of the invention provides User Equipment (UE), and the UE stops monitoring all or part of DCI of a DSS of a first carrier of a first base station after receiving a first indication message. And receiving the control message sent by the second base station through the DRB of the second carrier. And at this time, the first base station and the second base station provide data service for the UE together. Therefore, the UE does not need to monitor all or part of DCI of the DSS of the first base station all the time, and the first base station can send the control signaling to the UE through the DRB of the second carrier of the second base station, so that the power consumption of the UE is reduced, and the user experience is improved.

An embodiment of the present invention provides a UE, as shown in fig. 9, including: a Modem901 and a Processor 902.

The modem901 is configured to receive a first indication message sent by a first base station.

The uplink DCI refers to DCI for allocating an uplink resource.

The downlink DCI refers to DCI for allocating downlink resources.

Further, the modem901 can receive and transmit signals including control signaling and traffic data through the antenna port 903.

The processor902 is coupled to the modem901, and configured to stop listening to all or part of DCI of the DSS according to the first indication message.

Specifically, the processor902 is specifically configured to, when the received first indication message carries first identification information, stop monitoring partial DCI of the DSS identified by the first identification information according to the first identification information in the first indication message.

If the first identification information includes: sequence number information of the DCI of at least one format. At this time, the processor902 is specifically configured to stop monitoring the DCI corresponding to the sequence number information of the DCI of the at least one format of the DSS of the first carrier of the first base station according to the first identifier information.

If the first identification information comprises: information of uplink DCI or information of downlink DCI. At this time, the processor902 is specifically configured to stop monitoring the uplink DCI of the DS according to the first identification information. That is, the uplink data transmission to the uplink carrier associated with the SIB2 of the first carrier is stopped. Or, the processor902 is specifically configured to stop monitoring the downlink DCI of the DSS according to the first identifier information.

The processor902 is specifically configured to, when the received first indication message does not carry the first identification information, stop monitoring all DCI of the DSS of the first carrier of the first base station according to the first indication message.

At this time, the processor902 is further configured to apply the first DRX mode parameter on the first carrier. I.e. the DRX mode parameters of the first carrier are converted from the second DRX mode parameters to the first DRX mode parameters.

The modem901 is further configured to receive a control message for controlling the UE sent by the second base station through the data radio bearer DRB of the second carrier.

Specifically, in the case that the processor902 monitors all or part of DCI of the DSS of the second carrier, the modem901 receives a control message for controlling the UE sent by the second base station using the data radio bearer DRB of the second carrier.

The processor902 is further configured to obtain a service through the first base station and the second base station.

Wherein, the service includes: signaling services and data services.

Specifically, when the processor902 stops monitoring the DCI of the portion of the DSS of the first carrier of the first base station, the processor902 may obtain the signaling service from the first base station, obtain the data service from the second base station, and obtain the data service from the first base station.

When the processor902 stops monitoring all DCI of the DSS of the first carrier of the first base station, the processor902 may acquire the signaling service from the first base station and the data service from the second base station.

The processor902 is further configured to keep monitoring DCI of a common search space CSS of the first carrier when monitoring of all or part of DCI of the DSS is stopped.

The modem901 is further configured to receive a communication indication message sent by the first base station or the second base station.

Specifically, the modem901 is specifically configured to receive, after receiving the communication indication message, a control message for controlling the UE, which is sent by the second base station, through the data radio bearer DRB of the second carrier.

It should be noted that the communication indication message may be sent by the second base station to the UE, or may be sent by the first base station to the UE, which is not limited in the present invention.

The modem901 is further configured to send a detection signal to the second base station by using the second carrier of the second base station, so as to indicate that the second base station detects the signal quality of the detection signal after receiving the detection signal, and send a signal quality message for the second base station to communicate with the UE to the first base station.

The modem901 is further configured to receive a trigger message sent by the first base station.

Further, the modem901 is configured to send a detection signal to the second base station by using the second carrier of the second base station after receiving the trigger message.

Further, the modem901 is further configured to transmit a detection signal to the first base station by using the first carrier, so that the first base station detects the detection signal received through the first carrier.

Optionally, the detection signal is an SRS signal.

Further, the modem901 is further configured to receive a downlink reference signal transmitted by the second base station.

The processor902 is further configured to detect a channel quality indicator CQI of the second base station according to a downlink reference signal of the second base station.

The modem901 is further configured to send the detected CQI of the second base station to the first base station as the signal quality message.

Further, the modem901 is further configured to receive a DRB setup message sent by the first base station, so as to set up a DRB for transmitting a control message with a second base station.

The processor902 is further configured to establish a data radio bearer DRB with the second base station for transmitting the control message.

Further, the modem901 is further configured to receive a second indication message sent by the first base station or the second base station.

And the second indication message carries second identification information.

The processor902 is further configured to listen back to all or part of DCI of the DSS of the first carrier according to the second indication message received by the modem 901.

Specifically, if the second indication message carries second identification information, the processor902 is specifically configured to monitor a part of DCI of the DSS of the first carrier again according to the second identification information in the second indication message.

If the received second indication message does not carry the second identification information, the processor902 is specifically configured to monitor all DCI of the DSS of the first carrier according to the second indication message.

The processor902 is further configured to apply a second DRX mode parameter on the first carrier such that the UE enters an active state on the first carrier.

Wherein the second DRX mode parameter is a DRX parameter in an active state.

An embodiment of the present invention provides a system for controlling UE to monitor a carrier, as shown in fig. 10, including: communication system and user equipment UE 113. The communication system includes: a first base station 111 and a second base station 112.

The communication system is configured to control the UE to monitor the carrier according to the above embodiment, where the first base station 111 uses a low-frequency carrier, and the second base station 112 uses a high-frequency carrier.

The UE113 is the UE described in the above embodiments.

Optionally, the first base station communicates with the second base station via an X2 interface.

The embodiment of the invention provides a method, a device and a system for controlling UE to monitor carriers. At this time, the second base station sends all control messages of the first base station to the UE through the DRB of the second carrier to control the UE, and the first base station and the second base station provide data service for the UE together. Therefore, the UE does not need to monitor all or part of DCI of the DSS of the first base station all the time, and the first base station can send the control signaling to the UE through the DRB of the second carrier of the second base station, so that the power consumption of the UE is reduced, and the user experience is improved. Meanwhile, when the first base station determines that the UE needs to monitor all or part of the DCI of the DSS of the first carrier again, a second indication message is sent to the UE to indicate the UE to monitor all or part of the DCI of the DSS again, so that the UE can be ensured to correctly receive the received control message, and the user experience is further improved.

The technical solution of the embodiments of the present invention may be substantially implemented or contributed to by the prior art, or may be implemented in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method for controlling a User Equipment (UE) to monitor a carrier wave is characterized by comprising the following steps:

a first base station sends a first indication message to the UE to indicate the UE to stop monitoring all or part of Downlink Control Information (DCI) of a Dedicated Search Space (DSS) of a first carrier of the first base station;

the second base station sends a control message to the UE through a Data Radio Bearer (DRB) of a second carrier so as to control the UE;

the first base station and the second base station jointly provide service for the UE.

2. The method of claim 1, wherein after the first base station sends the first indication message to the UE, the method further comprises:

and the first base station sends a communication indication message to the UE to indicate that the UE receives the control message through the DRB of the second carrier wave of the second base station after receiving the communication indication message.

3. The method according to claim 1 or 2, wherein before the first base station sends the first indication message to the UE, the method further comprises:

a first base station receives a signal quality message of the UE communicating with a second base station;

and the first base station decides to trigger the UE to stop monitoring all or part of DCI of the DSS according to the signal quality message.

4. The method of claim 3, wherein the signal quality message comprises: and detecting a signal quality message obtained by the sounding reference information (SRS) sent by the UE to the second base station.

5. The method of claim 3 or 4, wherein the signal quality message comprises: and the UE detects the Channel Quality Indicator (CQI) of the second base station.

6. The method of any of claims 3-5, further comprising, prior to the first base station receiving the signal quality message for the UE to communicate with the second base station:

the first base station sends a trigger message to the UE to trigger the UE to send a detection signal used by a second base station for detecting signal quality by using a second carrier wave of the second base station;

the first base station receiving the signal quality message of the UE communicating with the second base station comprises: the first base station receives a signal quality message from the second base station that the UE communicates with the second base station.

7. The method according to any of claims 1-6, wherein before the first base station sends the first indication message to the UE, further comprising:

and the first base station determines to trigger the UE to stop monitoring all or part of DCI of the DSS according to the traffic of the UE.

8. The method according to any one of claims 1 to 7, wherein the first indication message carries first identification information; the first identification information is used for marking DCI of the DSS which the UE stops monitoring.

9. The method of claim 8, wherein the partial DCI comprises an uplink DCI or a downlink DCI, and wherein the first identification information comprises: information of uplink DCI or information of downlink DCI; the uplink DCI refers to DCI for allocating uplink resources; the downlink DCI refers to DCI for allocating downlink resources.

10. The method of claim 8, wherein the partial DCI comprises at least one format of DCI, and wherein the first identification information comprises: sequence number information of the DCI of at least one format.

11. The method according to any of claims 1-10, before the second base station sends a control message to the UE over the data radio bearer DRB of the second carrier to control the UE, further comprising:

and the first base station sends the control message of the UE to the second base station.

12. The method of claim 11, wherein before the first base station sends the control message of the UE to the second base station, further comprising:

the first base station sends a DRB establishment message to the UE and/or a second base station to indicate the DRB for transmitting the control message to be established between the UE and the second base station.

13. The method according to any of claims 1-12, further comprising, after the second base station sending a control message to the UE over a data radio bearer, DRB, of a second carrier to control the UE:

the first base station or the second base station sends a second indication message to the UE to indicate the UE to monitor all or part of DCI of the DSS of the first carrier again.

14. The method of claim 13,

the first indication message or the second indication message comprises: a downlink Buffer Status Report (BSR) message; the downlink BSR message is used to record the data amount corresponding to the UE to be sent by the first base station.

15. A method for controlling a User Equipment (UE) to monitor a carrier,

receiving a first indication message sent by a first base station; the first indication message is used for indicating the UE to stop monitoring all or part of downlink control information DCI of the dedicated search space DSS of the first carrier;

according to the first indication message, stopping monitoring all or part of DCI of the DSS;

receiving a control message for controlling the UE, which is sent by a second base station, through a Data Radio Bearer (DRB) of a second carrier;

16. The method of claim 15, further comprising, when ceasing to listen for all or part of the DCI of the DSS:

maintaining DCI listening to a Common Search Space (CSS) of the first carrier.

17. The method according to claim 15 or 16, further comprising, before receiving the control message for controlling the UE sent by the second base station over the data radio bearer DRB of the second carrier:

receiving a communication indication message from the first base station or the second base station; the communication indication message is used for indicating the UE to receive the control message through the DRB of the second carrier of the second base station.

18. The method according to any of claims 15-17, further comprising, prior to said receiving a first indication message:

and sending a detection signal to the second base station by using a second carrier of the second base station to indicate that the second base station detects the signal quality of the detection signal after receiving the detection signal, and sending a signal quality message for communication between the second base station and the UE to the first base station.

19. The method of claim 18, wherein detecting the signal comprises: sounding reference information, SRS, signals.

20. The method according to claim 18 or 19, wherein before said transmitting a detection signal to the second base station using the second carrier of the second base station, further comprising:

and receiving a trigger message sent by the first base station, wherein the trigger message is used for triggering the UE to send the detection signal.

21. The method according to any of claims 15-17, before receiving the first indication message sent by the first base station, the method further comprising:

receiving a downlink reference signal of the second base station;

detecting a Channel Quality Indicator (CQI) of the second base station according to a downlink reference signal of the second base station;

and sending the detected CQI of the second base station to the first base station as the signal quality message.

22. The method according to any of claims 15-21, wherein the first indication message carries first identity information, and the first identity information is used for indicating DCI of the DSS that the UE stops monitoring;

the stopping monitoring all or part of DCI of the DSS according to the first indication message comprises:

and according to the first identification information in the first indication message, stopping monitoring the partial DCI of the DSS identified by the first identification information.

23. The method of claim 22, wherein the partial DCI comprises an uplink DCI or a downlink DCI, and wherein the first identification information comprises: information of uplink DCI or information of downlink DCI; the uplink DCI refers to DCI for allocating uplink resources; the downlink DCI refers to DCI for allocating downlink resources.

24. The method of claim 22, wherein the partial DCI comprises at least one format of DCI, and wherein the first identification information comprises: sequence number information of the DCI of at least one format.

25. The method of any one of claims 15-24,

the receiving, by the DRB of the second carrier, the control message sent by the second base station for controlling the UE includes:

monitoring all or part of DCI of the DSS of the second carrier;

receiving a control message for controlling the UE, which is sent by a second base station, by using a Data Radio Bearer (DRB) of the second carrier; and the scheduling information of the control message is acquired from all or part of DCI of the DSS of the second carrier.

26. The method of any one of claims 15-25, further comprising, after said ceasing to listen for all or part of the DCI of the DSS according to the first indication message:

applying first DRX mode parameters on the first carrier; the first DRX mode parameter is an idle mode DRX parameter.

27. The method according to any of claims 15-26, wherein before said receiving the control message for controlling the UE sent by the second base station over the data radio bearer DRB of the second carrier, further comprising:

and establishing a Data Radio Bearer (DRB) for transmitting the control message with the second base station.

28. The method of claim 27, further comprising, before the establishing a Data Radio Bearer (DRB) with the second base station for transmitting control messages:

and receiving a DRB establishment message sent by the first base station, wherein the DRB establishment message is used for indicating the UE and the second base station to establish a Data Radio Bearer (DRB) for transmitting the control message.

29. The method according to any of claims 15-28, wherein after receiving the control message for controlling the UE sent by the second base station over the data radio bearer DRB of the second carrier, further comprising:

receiving a second indication message sent by the first base station or the second base station; the second indication message is used for indicating the UE to monitor all or part of DCI of the DSS of the first carrier again;

re-monitoring the all or part of DCI of the DSS according to the second indication message.

30. The method of claim 29, further comprising, after said re-listening for all or part of the DCI of the DSS according to the second indication message:

applying a second DRX mode parameter on the first carrier; the second DRX mode parameter is an active state DRX parameter.

31. The method of claim 30, wherein the first or second indication message comprises: a downlink Buffer Status Report (BSR) message; the downlink BSR message is used to record the data amount corresponding to the UE to be sent by the first base station.

32. A communication system for controlling a UE to monitor a carrier, comprising: a first base station and a second base station;

the first base station is configured to send a first indication message to the UE to indicate that the UE stops monitoring all or part of downlink control information DCI of a dedicated search space DSS of a first carrier of the first base station;

the second base station is configured to send a control message to the UE through a data radio bearer DRB of a second carrier to control the UE;

33. The communication system of claim 32,

the first base station is further configured to send a communication indication message to the UE to indicate that the UE receives the control message through the DRB of the second carrier of the second base station after receiving the communication indication message.

34. The communication system according to claim 32 or 33,

the first base station is further used for receiving a signal quality message of the UE communicating with a second base station;

the first base station is further configured to determine, according to the signal quality message, to trigger the UE to stop monitoring all or part of DCI of the DSS.

35. The communication system of claim 34,

the first base station is further configured to send a trigger message to the UE to trigger the UE to send a detection signal used by the second base station for detecting signal quality by using the second carrier of the second base station;

the first base station is specifically configured to receive, from a second base station, a signal quality message for the UE to communicate with the second base station.

36. The communication system according to any of claims 32-35,

the first base station is further configured to determine to trigger the UE to stop monitoring all or part of DCI of the DSS according to the traffic volume of the UE.

37. The communication system according to any of claims 32-36,

the first indication message carries first identification information; the first identification information is used for marking DCI of the DSS which the UE stops monitoring.

38. The communication system according to any of claims 32-37,

the first base station is further configured to send a control message of the UE to the second base station.

39. The communication system of claim 38,

the first base station is further configured to send a DRB setup message to the UE and/or a second base station to indicate that the DRB for transmitting the control message is set up between the UE and the second base station.

40. The communication system according to any of claims 32-39,

the first base station is further configured to send a second indication message to the UE to indicate the UE to listen to all or part of DCI of the DSS of the first carrier again; or,

the second base station is further configured to send a second indication message to the UE.

41. A User Equipment (UE), comprising:

a receiving and sending unit, configured to receive a first indication message sent by a first base station; the first indication message is used for indicating the UE to stop monitoring all or part of downlink control information DCI of the dedicated search space DSS of the first carrier;

a processing unit, configured to stop monitoring all or part of DCI of the DSS according to the first indication message received by the transceiving unit;

the processing unit is further configured to receive, through a data radio bearer DRB of a second carrier, a control message sent by a second base station and used for controlling the UE;

42. The UE of claim 41,

the processing unit is further configured to keep monitoring the DCI of the common search space CSS of the first carrier when the monitoring of all or part of the DCI of the DSS is stopped.

43. The UE of claim 41 or 42,

the transceiver unit is further configured to receive a communication indication message from the first base station or the second base station; the communication indication message is used for indicating the UE to receive the control message through the DRB of the second carrier of the second base station.

44. The UE of any one of claims 41 to 43,

the transceiver unit is further configured to send a detection signal to the second base station by using a second carrier of the second base station, so as to indicate that the second base station detects the signal quality of the detection signal after receiving the detection signal, and send a signal quality message that the second base station communicates with the UE to the first base station.

45. The UE of claim 44,

the transceiver unit is further configured to receive a trigger message sent by the first base station, where the trigger message is used to trigger the UE to send the detection signal.

46. The UE of any of claims 41-45,

the transceiver unit is further configured to receive a downlink reference signal sent by the second base station;

the processing unit is further configured to detect a channel quality indicator CQI of the second base station according to a downlink reference signal of the second base station;

the transceiver unit is further configured to send the detected CQI of the second base station to the first base station as the signal quality message.

47. The UE of any one of claims 41 to 46, wherein the first indication message carries first identity information, and the first identity information is used to mark a DCI of a DSS that the UE stops monitoring;

the processing unit is specifically configured to, according to the first identification information in the first indication message, stop monitoring partial DCI of the DSS identified by the first identification information.

48. The UE of any one of claims 41 to 47,

the processing unit is specifically configured to monitor all or part of DCI of the DSS of the second carrier;

receiving a control message which is sent by a second base station and used for controlling the UE by using a Data Radio Bearer (DRB) of the second carrier; and the scheduling information of the control message is acquired from all or part of DCI of the DSS of the second carrier.

49. The UE of any one of claims 41 to 48,

the processing unit is further configured to apply a first DRX mode parameter on the first carrier; the first DRX mode parameter is an idle mode DRX parameter.

50. The UE of any one of claims 41 to 49,

the processing unit is further configured to establish a data radio bearer DRB for transmitting a control message with the second base station.

51. The UE of claim 50,

the transceiver unit is further configured to receive a DRB setup message sent by the first base station, where the DRB setup message is used to instruct the UE to setup a data radio bearer DRB for transmitting the control message with the second base station.

52. The UE of any one of claims 41 to 51,

the transceiver unit is further configured to receive a second indication message sent by the first base station or the second base station; the second indication message is used for indicating the UE to monitor all or part of DCI of the DSS of the first carrier again;

the processing unit is further configured to listen to all or part of the DCI of the DSS again according to the second indication message.

53. The UE of claim 52,

the processing unit is further configured to apply a second DRX mode parameter on the first carrier to cause the UE to enter an active state on the first carrier; the second DRX mode parameter is an active state DRX parameter.