CN113677028B - PDCCH monitoring method, device, equipment and storage medium - Google Patents

Abstract

The application discloses a PDCCH monitoring method, a PDCCH monitoring device, PDCCH monitoring equipment and a PDCCH monitoring storage medium, and belongs to the technical field of communication. The method comprises the following steps: measuring RSRP of a plurality of SSBs in the target SSB Burst Set; determining a target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs; and monitoring the PDCCH based on the target SSB, wherein the DMRS of the PDCCH and the target SSB have a quasi co-location QCL relationship. Since the target SSB is selected based on RSRP, the transmission channel quality of the target SSB is relatively good, and the channel condition of the transmission channel of the SSB having a QCL relationship with the DMRS of the PDCCH is similar to the channel condition of the transmission channel of the PDCCH, so that monitoring the PDCCH corresponding to the DMRS having a QCL relationship with the target SSB can ensure monitoring of the PDCCH transmitted on the channel of good quality.

Description

PDCCH monitoring methods, devices, equipment and storage media

Technical field

The embodiments of the present application relate to the field of communication technology, and in particular to a PDCCH monitoring method, device, equipment and storage medium.

Background technique

The terminal equipment needs to monitor the PDCCH (Physical Downlink Control Channel, physical downlink control channel), obtain the DCI (Downlink Control Information, downlink control information) in the PDCCH, and then in the PDSCH (Physical Downlink Shared Channel, physical downlink shared channel) indicated by the DCI. Receive public control information.

The network equipment will configure multiple monitoring opportunities for the terminal equipment, and send the PDCCH to the terminal at the multiple monitoring opportunities. At different monitoring opportunities, the quality of the PDCCH transmission channel is different. The terminal equipment expects to monitor the PDCCH sent on a channel with good quality. Therefore, how to monitor the PDCCH has become a hot topic of research.

Contents of the invention

The embodiments of the present application provide a PDCCH monitoring method, device, equipment and storage medium, which can ensure that the terminal equipment monitors the PDCCH sent on a channel with good quality. The technical solution is as follows:

According to one aspect of the embodiments of the present application, a PDCCH monitoring method is provided, and the method includes:

Measure the reference signal received power RSRP of multiple synchronization signal blocks SSB in the target synchronization signal burst set SSB Burst Set;

Determine a target SSB from the plurality of SSBs based on the RSRPs of the plurality of SSBs;

The physical downlink control channel PDCCH is monitored based on the target SSB, wherein the demodulation reference signal DMRS of the PDCCH has a quasi-co-located QCL relationship with the target SSB.

According to another aspect of the embodiment of the present application, a PDCCH monitoring device is provided, and the device includes:

RSRP measurement module, used to measure the reference signal received power RSRP of multiple synchronization signal blocks SSB in the target synchronization signal burst set SSB Burst Set;

A target SSB determination module, configured to determine a target SSB from the plurality of SSBs based on the RSRP of the plurality of SSBs;

The PDCCH monitoring module is configured to monitor the physical downlink control channel PDCCH based on the target SSB, where the demodulation reference signal DMRS of the PDCCH and the target SSB have a quasi-co-located QCL relationship.

According to another aspect of the embodiment of the present application, a terminal device is provided. The terminal device includes a processor and a memory; the memory stores at least one program code, and the at least one program code is used by the processor. Implemented to implement the PDCCH monitoring method as described in the above aspect.

According to another aspect of the embodiment of the present application, a computer-readable storage medium is provided, the storage medium stores at least one program code, and the at least one program code is used to be executed by a processor to implement the above aspect. PDCCH monitoring method.

According to another aspect of the embodiment of the present application, a computer program product is provided. The computer program product stores at least one program code. The at least one program code is loaded and executed by a processor to implement the PDCCH monitoring described in the above aspects. method.

According to another aspect of the embodiment of the present application, a chip is provided. The chip includes programmable logic circuits and/or program instructions. When the chip is run on a terminal device, it is used to implement the PDCCH described in the above aspect. Monitoring methods.

The solution provided by the embodiment of this application considers that the DMRS of the PDCCH corresponding to each monitoring opportunity has a QCL relationship with the SSB in an SSBBurst Set, and the channel conditions of the SSB transmission channel that has a QCL relationship with the DMRS of the PDCCH are related to the transmission of the PDCCH. The channel conditions of the channels are similar, therefore, SSB is used to monitor the PDCCH. Since the target SSB is selected from multiple SSBs based on the RSRP of multiple SSBs, the transmission channel quality of the target SSB is relatively good. Therefore, monitoring the PDCCH corresponding to the DMRS that has a QCL relationship with the target SSB can ensure The terminal equipment monitors the PDCCH sent on the channel with good quality and improves the reception accuracy of the PDCCH.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 shows a schematic diagram of an implementation environment provided by an exemplary embodiment of the present application;

Figure 2 shows a flow chart of a PDCCH monitoring method provided by an exemplary embodiment of the present application;

Figure 3 shows a flow chart of a PDCCH monitoring method provided by an exemplary embodiment of the present application;

Figure 4 shows a schematic diagram of the association between SSB and PDCCH monitoring timing provided by an exemplary embodiment of the present application;

Figure 5 shows a schematic diagram of a database provided by an exemplary embodiment of the present application;

Figure 6 shows a flow chart of a PDCCH monitoring method provided by an exemplary embodiment of the present application;

Figure 7 shows a schematic diagram of a process for determining a target SSB Burst Set provided by an exemplary embodiment of the present application;

Figure 8 shows a schematic diagram of the working status of an RF module and a baseband module provided by an exemplary embodiment of the present application;

Figure 9 shows a schematic diagram of a process for determining target monitoring timing provided by an exemplary embodiment of the present application;

Figure 10 shows a structural block diagram of a PDCCH monitoring device provided by an exemplary embodiment of the present application;

Figure 11 shows a structural block diagram of a terminal device provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The "plurality" mentioned in this article means two or more than two. "And/or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the related objects are in an "or" relationship.

The terms "first", "second", "third", "fourth", etc. used in this application may be used to describe various concepts herein, but these concepts are not limited by these terms unless otherwise specified. These terms are only used to distinguish one concept from another. For example, a first duration may be referred to as a duration, and similarly, a second duration may be referred to as a first duration, without departing from the scope of the present application.

Please refer to Figure 1, which shows a block diagram of a communication system provided by an exemplary embodiment of the present application. The communication system includes: a terminal device 101 and a network device 102.

The terminal equipment 101 includes a UE (User Equipment), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent or a user device. Optionally, the terminal device 101 also includes a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), Handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5GS (5th Generation System, fifth-generation mobile communication system) or future evolved PLMN ( Terminal equipment in Public Land Mobile Network (Public Land Mobile Communication Network), etc. This embodiment of the present application does not limit this. Optionally, the number of terminal devices 101 is any number, and one or more terminal devices 101 are distributed in the cell managed by each network device 102.

The network device 102 is a device deployed in the access network to provide wireless communication functions for the terminal device 101. Network equipment 102 includes various forms of macro base stations, micro base stations, relay stations, access points, and so on. For example, in an LTE (Long Term Evolution, Long Term Evolution) system, the network device 102 is EUTRAN (Evolved Universal Terrestrial Radio Access Network, Evolved Universal Terrestrial Radio Network) or one or more eNodeBs (Evolved Node B, The name of the base station in the LTE system); in the 5G NR (New Radio, New Radio) system, the network device 102 is a RAN (Radio Access Network, a radio access network) or one or more gNBs in the RAN (in the 5G NR system the name of the base station).

The "5G NR system" in the embodiment of this application can also be called a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of this application are applicable to other communication systems such as LTE systems, 5G NR systems, subsequent evolution systems of 5G NR systems, NB-IoT (Narrow Band Internet of Things, narrowband Internet of Things) systems, etc. The embodiments of this application are suitable for There is no restriction on this.

The network architecture and business scenarios described in the embodiments of this application are to more clearly explain the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art will know that with the network architecture evolution and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

Figure 2 shows a flow chart of a PDCCH monitoring method provided by an exemplary embodiment of the present application. Referring to Figure 2, the method includes:

201. The terminal device measures the RSRP of multiple SSBs in the target SSB Burst Set.

SSB Burst Set (Synchronization Signal Block Burst Set, synchronization signal burst set) includes multiple SSBs (Synchronization Signal Block, synchronization signal blocks). These multiple SSBs are sent through Beams in multiple directions, that is, Yes, the transmission channels of multiple SSBs are different. Therefore, the quality of the transmission channels corresponding to these multiple SSBs is also different.

The network device periodically sends an SSB Burst Set to the terminal device, and in each cycle, multiple SSBs in the SSB Burst Set are sent in sequence in the order of the multiple SSBs in the SSB Burst Set. In a possible implementation manner, the time period between the transmission time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity among multiple monitoring opportunities of the PDCCH is not less than the first time period.

Optionally, the first duration is any duration. Optionally, the first duration is the sum of the second duration, the third duration and the fourth duration. Among them, the second duration is the duration consumed for RSRP measurement of multiple SSBs; the third duration is the duration consumed for selecting the SSB with the highest RSRP from multiple SSBs; and the fourth duration is the determination of the target monitoring opportunity based on the SSB with the highest RSRP. The time consumed.

Among them, RSRP (Reference Signal Receiving Power) can reflect the signal strength of the corresponding SSB, and further can reflect the quality of the channel for transmitting the SSB. Among them, the RSRP strength of the SSB is positively correlated with the quality of the transmission channel corresponding to the SSB. That is, the stronger the RSRP strength of the SSB, the better the quality of the transmission channel corresponding to the SSB.

In the embodiment of this application, since the time period between the sending time point corresponding to the last SSB in the SSB Burst Set and the earliest monitoring opportunity is not less than the first time period, the terminal device has enough time to perform RSRP measurement and select the highest RSRP value. SSB and determine the target monitoring timing based on the SSB with the highest RSRP.

202. The terminal device determines the target SSB from the multiple SSBs based on the RSRPs of the multiple SSBs.

Optionally, the target SSB is the SSB with the highest RSRP among multiple SSBs, or the target SSB is any SSB among multiple SSBs whose RSRP is greater than the reference RSRP. This embodiment of the present application does not limit this.

203. The terminal equipment monitors the PDCCH based on the target SSB, and the DMRS of the PDCCH has a QCL relationship with the target SSB.

Among them, the DMRS (Demodulatin Reference Signal) of the PDCCH is used to demodulate the PDCCH. The DMRS of the PDCCH has a QCL (Quasi Co-Location) relationship with the SSB, which means that the transmission channel conditions of the PDCCH and the SSB are the same or similar.

Optionally, the PDCCH in the embodiment of the present application is the PDCCH of Paging (paging message) or the PDCCH of SIB (System Information Block, System Information Block). The PDCCH of Paging means that the PDSCH indicated by the DCI in the PDCCH includes Paging. The PDCCH of SIB means that the PDSCH indicated by the DCI in the PDCCH includes SIB.

The solution provided by the embodiment of this application considers that the DMRS of the PDCCH corresponding to each monitoring opportunity has a QCL relationship with the SSB in an SSBBurst Set, and the channel conditions of the SSB transmission channel that has a QCL relationship with the DMRS of the PDCCH are related to the transmission of the PDCCH. The channel conditions of the channels are similar, therefore, SSB is used to monitor the PDCCH. Since the target SSB is selected from multiple SSBs based on the RSRP of multiple SSBs, the transmission channel quality of the target SSB is relatively good. Therefore, monitoring the PDCCH corresponding to the DMRS that has a QCL relationship with the target SSB can ensure The terminal equipment monitors the PDCCH sent on the channel with good quality and improves the reception accuracy of the PDCCH.

Figure 3 shows a flow chart of a PDCCH monitoring method provided by an exemplary embodiment of the present application. In this embodiment, the terminal device first obtains the corresponding historical SSB with good transmission channel quality, and when the historical SSB is unavailable In this case, the SSB with the highest RSRP is selected through RSRP measurement. Referring to Figure 3, the method includes:

301. The terminal device obtains the first target SSB. The first target SSB was sent by the network device before the current time point, and the quality of the transmission channel corresponding to the first target SSB meets the quality condition.

Wherein, if the quality of the transmission channel corresponding to the first target SSB satisfies the quality condition, it means that the quality of the channel for transmitting the first target SSB is good. For example, the quality conditions met by the transmission channel quality may include, but are not limited to, that the information sent by the network device can be accurately received under the channel quality, or that the RSRP of the received information under the channel quality is greater than the reference threshold, etc.

In a possible implementation, the time point corresponding to the first target SSB is stored in the first data set. Correspondingly, the terminal device queries the time point corresponding to the first target SSB from the first data set. The first data set is used to store the time points in history when the corresponding transmission channel quality satisfies the quality condition of the SSB. Optionally, the first data set is also used to store other information of the SSB, for example, the index of the SSB whose corresponding transmission channel quality meets the quality condition in history. The index is the identification of the SSB, which can indicate the SSB and is used to transfer the SSB to the SSB. This SSB is distinguished from other SSBs in the SSB Burst Set in which this SSB is located. For example, there are four SSBs in an SSB Burst Set. The index of the first SSB is "SSB0", the index of the second SSB is "SSB1", the index of the third SSB is "SSB2", and the index of the fourth SSB is "SSB2". The index is "SSB3", and the embodiment of this application does not limit this.

Optionally, the first data set is stored in the terminal device, and the terminal device will continuously update the first data set. For example, every time the terminal device obtains the latest SSB whose corresponding transmission channel quality meets the quality condition, it will update the SSB. Update to the first data set. The method for the terminal device to update the first data set includes: after acquiring the latest SSB whose corresponding transmission channel quality meets the quality condition, the terminal device deletes the information of the original SSB that meets the condition in the first data set, The latest time point corresponding to the SSB that meets the conditions is stored in the first data set, or the terminal device does not delete the original SSB information in the first data set and directly stores the latest time point corresponding to the SSB that meets the conditions. Store into the first data set. Optionally, the first data set is located in the first area of the database of the terminal device.

Optionally, the terminal device monitors the PDCCH according to the instructions of the network device. Correspondingly, when the terminal device receives the instruction information sent by the network device, and the instruction information instructs the terminal device to receive the PDCCH sent by the network device, the terminal device obtains the first Target SSB. Alternatively, the terminal equipment monitors the PDCCH according to a fixed period, and accordingly, the terminal equipment obtains the first target SSB according to a fixed period. This embodiment of the present application does not limit this.

302. When the time period between the time point corresponding to the first target SSB and the current time point is greater than the fifth time period, the terminal device obtains the second target SSB. The second target SSB is the SSB sent by the network device before the current time point. The SSB with the highest RSRP.

Wherein, the first target SSB being greater than the fifth duration means that the time point corresponding to the first target SSB is far away from the current time point, and the quality of the transmission channel corresponding to the first target SSB may no longer meet the quality conditions. Therefore, the first target SSB SSB cannot be used to determine the monitoring timing of PDCCH. In this case, the terminal device obtains the second target SSB.

Optionally, the fifth duration is any duration. Optionally, the terminal device obtains the fifth duration through simulation testing, that is, for each duration within the target duration range, the terminal device performs a simulation test based on the system parameters of the communication system and each duration to obtain the communication system The PDCCH monitoring results corresponding to each duration; the terminal equipment determines the longest duration in which the PDCCH is successfully monitored within the target duration range as the fifth duration. Of course, the fifth duration can also be obtained through other methods, for example, the terminal device sets the fifth duration based on channel quality, channel fading, channel frequency offset change, etc. Optionally, the target duration range is set to any duration range as needed, and the embodiment of the present application does not limit this. Optionally, the system parameters of the communication system include performance parameters of network equipment, performance parameters of terminal equipment, channel parameters of the communication system, etc., which are not limited in the embodiments of the present application.

In a possible implementation manner, the time point corresponding to the second target SSB is stored in the second data set, and accordingly, the terminal device queries the time point corresponding to the second target SSB from the second data set. Optionally, the second data set is used to store the time point and RSRP corresponding to at least one SSB obtained in history. Correspondingly, the terminal device queries the second target SSB from the second data set in the following manner: the terminal device selects the SSB with the highest RSRP from the second data set, and determines the SSB as the second target SSB. Optionally, the second data set is also used to store other information of the SSB, for example, the index corresponding to at least one SSB obtained in history. The index corresponding to any SSB is the identifier of the SSB, which can indicate the SSB, and is used to store the SSB. This SSB is distinguished from other SSBs in the SSB Burst Set in which this SSB is located. For example, there are four SSBs in an SSB Burst Set. The index of the first SSB is "SSB0", the index of the second SSB is "SSB1", the index of the third SSB is "SSB2", and the index of the fourth SSB is "SSB2". The index is "SSB3", and the embodiment of this application does not limit this.

Optionally, the second data set is stored in the terminal device, and the terminal device will continuously update the second data set. For example, every time the terminal device obtains the latest RSRP of the SSB, it updates the RSRP and time point corresponding to the SSB. Second data set. Optionally, the terminal device updates the second data set in the following manner: each time the terminal device obtains the RSRP of the latest SSB, it does not delete the original SSB information in the second data set and directly updates the time point corresponding to the latest SSB. and RSRP are stored into the second data set. Optionally, the second data set is located in a second area of the database of the terminal device.

In a possible implementation manner, when the time period between the time point corresponding to the first target SSB and the current time point is not greater than the fifth time period, the terminal equipment monitors the PDCCH based on the first target SSB, and the DMRS of the PDCCH is the same as that of the first target SSB. The first target SSB has a QCL relationship.

Optionally, the terminal equipment monitors the PDCCH based on the first target SSB, including: the terminal equipment determines a target monitoring opportunity based on the first target SSB, and the DMRS of the PDCCH corresponding to the target monitoring opportunity has a QCL relationship with the first target SSB. Among them, the duration between the time point corresponding to the first target SSB and the current time point is not greater than the fifth time duration, which means: the time point corresponding to the first target SSB is closer to the current time point, and the transmission channel corresponding to the first target SSB The quality is very likely to still meet the quality conditions at present. In this case, if the PDCCH is directly monitored based on the first target SSB, there is no need to obtain the second target SSB, and there is no need to perform RSRP measurements on multiple SSBs in the target SSB Burst Set. Improved PDCCH monitoring efficiency.

303. When the terminal device is in a situation where the duration between the time point corresponding to the first target SSB and the current time point is greater than the fifth duration, and the duration between the time point corresponding to the second target SSB and the current time point is greater than the sixth duration. , measure the RSRP of multiple SSBs in the target SSB Burst Set.

Wherein, the second target SSB is greater than the sixth duration, which means that the time point corresponding to the second target SSB is far away from the current time point, and the quality of the transmission channel corresponding to the second target SSB may no longer meet the quality condition. Therefore, the second target SSB The target SSB cannot be used to determine the monitoring timing of the PDCCH. In this case, the end device measures the RSRP of multiple SSBs in the target SSB Burst Set.

Optionally, the sixth duration is any duration. Optionally, the terminal device obtains the sixth duration through simulation testing, that is, for each duration within the target duration range, the terminal device performs a simulation test based on the system parameters of the communication system and each duration to obtain the communication system. PDCCH monitoring results corresponding to each duration; the terminal equipment determines the longest duration in which the PDCCH is successfully monitored within the target duration range as the sixth duration. Of course, the sixth duration can also be obtained through other methods, for example, the terminal device sets the sixth duration based on channel quality, channel fading, channel frequency offset change, etc. Optionally, the target duration range can be set to any duration range as needed. Optionally, the sixth duration is the same as or different from the fifth duration, which is not limited in this embodiment of the present application. Optionally, the system parameters of the communication system include performance parameters of network equipment, performance parameters of terminal equipment, channel parameters of the communication system, etc., which are not limited in the embodiments of the present application.

In a possible implementation, the time period between the time point corresponding to the first target SSB and the current time point of the terminal device is greater than the fifth time period, and the time period between the time point of the second target SSB and the current time point is no longer If the duration is longer than the sixth time, the PDCCH is monitored based on the second target SSB, and the DMRS of the PDCCH has a QCL relationship with the second target SSB.

Optionally, the terminal equipment monitors the PDCCH based on the second target SSB, including: the terminal equipment determines a target monitoring opportunity based on the second target SSB, and the DMRS of the PDCCH corresponding to the target monitoring opportunity has a QCL relationship with the second target SSB. Among them, the duration between the time point corresponding to the second target SSB and the current time point is not greater than the sixth duration, which means: the time point corresponding to the second target SSB is closer to the duration of the current time point. Therefore, the time period corresponding to the second target SSB The transmit channel quality is still good at present. In this case, by directly monitoring the PDCCH based on the second target SSB, there is no need to perform RSRP measurements on multiple SSBs in the target SSB BurstSet, which improves the monitoring efficiency of the PDCCH.

304. The terminal device determines the target SSB from the multiple SSBs based on the RSRPs of the multiple SSBs.

In a possible implementation, the terminal device determines the target SSB from multiple SSBs based on the RSRP of multiple SSBs, including: the terminal device selects the SSB with the highest RSRP from the multiple SSBs; and determines the SSB with the highest RSRP as the target. SSB. In the embodiment of the present application, among the multiple SSBs in the SSB Burst Set, the transmission channel quality of the SSB with the strongest RSRP is relatively good. Therefore, monitoring the PDCCH corresponding to the DMRS that has a QCL relationship with the SSB can ensure that The terminal equipment monitors the PDCCH sent on the channel with good quality and improves the reception accuracy of the PDCCH.

Optionally, the terminal device determines the target SSB from the multiple SSBs based on the RSRP of the multiple SSBs, including: the terminal device selects any SSB from the multiple SSBs whose RSRP is greater than the reference RSRP, and determines the SSB as the target SSB. Among them, the RSRP of the SSB is greater than the reference RSRP, which means that the transmission channel quality of the SSB meets the quality conditions. In this embodiment of the present application, since the RSRP of the selected target SSB is greater than the reference RSRP, the transmission channel quality of the target SSB is relatively good. Therefore, monitoring the PDCCH corresponding to the DMRS that has a QCL relationship with the SSB can ensure that the terminal The device monitors the PDCCH sent on a good-quality channel and improves the PDCCH reception accuracy. Of course, the terminal device can also determine the target SSB through other methods, and the embodiments of the present application do not limit this.

305. The terminal equipment monitors the PDCCH based on the target SSB, where the DMRS of the PDCCH has a QCL relationship with the target SSB.

In a possible implementation, the terminal equipment monitors the PDCCH based on the target SSB, including: the terminal equipment determines the target monitoring timing based on the index of the target SSB, and monitors the PDCCH at the target monitoring timing, where the DMRS of the PDCCH corresponding to the target monitoring timing Has a QCL relationship with the target SSB.

In this embodiment of the present application, since the transmission channel quality of the target SSB is relatively good, using the monitoring opportunity corresponding to the target SSB as the target monitoring opportunity to monitor the PDCCH can ensure that the terminal equipment monitors the PDCCH sent on the channel with good quality. PDCCH, improve the reception accuracy of PDCCH.

Optionally, the terminal equipment determines the target monitoring opportunity based on the target SSB by: the terminal equipment determines the index corresponding to the target SSB based on the index of the target SSB and the mapping relationship between the index of the SSB and the monitoring opportunity of the PDCCH. Target monitoring timing. Optionally, the mapping relationship between the index of the SSB and the monitoring opportunity of the PDCCH is stored in the terminal device. Based on the mapping relationship, the monitoring opportunity corresponding to the index of any SSB can be obtained, and the DMRS of the PDCCH corresponding to the monitoring opportunity is the same as the DMRS of the PDCCH. SSB has QCL relationship.

Figure 4 is a schematic diagram of the correlation between SSB and PDCCH monitoring opportunity (Monitoring Occasion, MO). Referring to Figure 4, Figure 4 shows the sending cycles of two SSB Burst Sets. The SSB Burst Set sent in each sending cycle includes 4 SSBs, and the beam directions used to send these 4 SSBs are different. The SSB in any SSB Burst Set has an associated PDCCH monitoring opportunity, and the DMRS of the PDCCH corresponding to the SSB associated monitoring opportunity has a QCL relationship with the SSB.

One point that needs to be explained is that the first target SSB is obtained first, and when the first target SSB is unavailable, the second target SSB is obtained. When the second target SSB is unavailable, the multiple targets in the target SSB Burst Set are measured. The solution of RSRP of an SSB is only an illustrative explanation. In other embodiments, the second target SSB is obtained first, and when the second target SSB is unavailable, the first target SSB is obtained. When the first target SSB is unavailable, If used, measure the RSRP of multiple SSBs in the target SSB BurstSet. Or, obtain the first target SSB, and directly measure the RSRPs of multiple SSBs in the target SSB Burst Set if the first target SSB is unavailable. Alternatively, the second target SSB is obtained, and when the second target SSB is unavailable, the RSRPs of multiple SSBs in the target SSB Burst Set are directly measured. This embodiment of the present application does not limit this.

The solution provided by the embodiment of this application considers that the DMRS of the PDCCH corresponding to each monitoring opportunity has a QCL relationship with the SSB in an SSBBurst Set, and the channel conditions of the SSB transmission channel that has a QCL relationship with the DMRS of the PDCCH are related to the transmission of the PDCCH. The channel conditions of the channels are similar, therefore, SSB is used to monitor the PDCCH. Since the target SSB is selected from multiple SSBs based on the RSRP of multiple SSBs, the transmission channel quality of the target SSB is relatively good. Therefore, monitoring the PDCCH corresponding to the DMRS that has a QCL relationship with the target SSB can ensure The terminal equipment monitors the PDCCH sent on the channel with good quality and improves the reception accuracy of the PDCCH.

The following provides various update scenarios for the database:

First, when the terminal device receives the SSB sent by the network device and there is a target PDCCH, the terminal device updates the index and time point corresponding to the SSB to the first data set. Among them, the DMRS of the target PDCCH has a QCL relationship with the SSB. Among them, the time point corresponding to SSB is the reception time point of SSB. Optionally, the SSB reception time point is the Slot number of the SSB.

Optionally, during the cell search or cell system information update process, the terminal device receives the SSB carrying the MIB (Master Information Block, main system information block) sent by the network device, and the SIB1 (System Information Block) carried in the MIB Block1, remaining minimum system information) configuration information indicates that SIB1 CORESET (control resource set) exists, and the terminal equipment determines that the target PDCCH exists.

In the embodiment of this application, the terminal equipment can successfully receive the SSB, and the SSB also has a corresponding target PDCCH, which not only indicates that the transmission channel quality of the SSB meets the quality conditions, but also indicates that the SSB has a corresponding PDCCH monitoring opportunity. This kind of In this case, the index and time point of the SSB are updated to the first data set, and then the SSB can be directly queried from the first data set, so as to determine the monitoring opportunity of the PDCCH based on the SSB.

Second, when the random access is successful, the terminal device updates the index and time point corresponding to the SSB used in the random access to the first data set. Among them, the time point corresponding to SSB is the time point when random access is initiated. Optionally, the time point when the random access is initiated is the Slot number where the random access is initiated. Alternatively, when the random access fails, the terminal device updates the index and time point corresponding to the SSB obtained during the random access process, and the RSRP of the SSB to the second data set. Among them, the time point corresponding to SSB is the reception time point of SSB. Optionally, the SSB reception time point is the slot number of the SSB.

During the random access process, the terminal device will receive at least one SSB, determine the corresponding SSB whose transmit channel quality meets the quality conditions from the at least one SSB, and determine the random access Preamble based on the reception timing and reception power of the SSB. (preamble) transmission timing and transmission power, the SSB is the SSB used for random access.

In the process of selecting an SSB whose corresponding transmission channel quality meets the quality condition from the at least one SSB, the terminal device will measure the RSRP of the at least one SSB and select the corresponding transmission channel using the RSRP of the at least one SSB as a reference. SSBs whose quality meets the quality conditions. Therefore, during the random access process, the terminal device will obtain the RSRP of at least one SSB. In the case of random access failure, the terminal device will obtain the index and time corresponding to the at least one SSB. Points and RSRP are updated to the second data set.

In the embodiment of this application, successful random access indicates that the quality of the transmission channel corresponding to the SSB used for random access meets the quality conditions. In this case, the index and time point of the SSB are updated to the first data set, and subsequently The SSB is directly queried from the first data set, so as to determine the monitoring opportunity of the PDCCH based on the SSB. In the case of random access failure, the RSRP of at least one SSB obtained during the random access process, as well as the corresponding index and time point are updated to the second data set, and subsequent terminal devices can directly query from the second data set. The SSB with the highest RSRP is used to determine the PDCCH monitoring timing based on this SSB.

Third, when the terminal device receives the relationship indication information sent by the network device, and the relationship indication information indicates the QCL relationship between the DMRS of the PDCCH and the SSB, the terminal device updates the index and time point corresponding to the SSB to the first data. Set; update the index and time point corresponding to the SSB, and the RSRP of the SSB to the second data set. The time point corresponding to the SSB is the reception time point of the SSB. Optionally, the receiving time point of the SSB is the slot number in which the SSB is received. Optionally, the relationship indication information is PDCCH TCI state (Transmission Configuration Index, transmission configuration index state).

In the connected state, the terminal device will receive the relationship indication information sent by the network device, and perform channel estimation based on the reference signal in the relationship indication information, that is, the SSB that has a QCL relationship with the DMRS of the PDCCH. During the channel estimation process, the terminal device will measure the RSRP of the SSB. In this case, the terminal device updates the RSRP of the SSB, as well as the corresponding index and time point, to the second data set to facilitate subsequent terminal devices. The second data set queries the SSB with the highest RSRP, and determines the PDCCH monitoring timing based on the SSB with the highest RSRP. In addition, since the SSB is a reference signal indicated by the network device through the relationship indication information, it means that the quality of the transmission channel corresponding to the SSB meets the quality condition. In this case, the index and time point of the SSB are updated to the first data set, Subsequently, the SSB can be directly queried from the first data set, so as to determine the monitoring opportunity of the PDCCH based on the SSB.

When the terminal device receives the relationship indication information sent by the network device, and the relationship indication information indicates the QCL relationship between the DMRS of the PDCCH and the CSI-RS (Channel State Information-Reference Signal, Channel State Information Reference Signal), it will The index and time point corresponding to the SSB with the QCL relationship between the CSI-RS is updated to the first data set; the index and time point corresponding to the SSB, and the RSRP of the SSB are updated to the second data set. Among them, the time point corresponding to SSB is the reception time point of SSB. Optionally, the slot number of the SSB is received at the receiving time point of the SSB.

In the connected state, the terminal device will receive the relationship indication information sent by the network device, and perform channel estimation based on the reference signal in the relationship indication information, that is, the CSI-RS that has a QCL relationship with the DMRS of the PDCCH. During the channel estimation process, the terminal device will measure the RSRP of the CSI-RS. Correspondingly, the terminal device can determine the RSRP of the SSB that has a QCL relationship with the CSI-RS based on the RSRP of the CSI-RS. That is, the terminal device obtains the RSRP of the historical CSI-RS and the RSRP of the historical SSB that has a QCL relationship with the historical CSI-RS; determines the target value, which is the difference between the RSRP of the historical CSI-RS and the RSRP of the historical SSB. value; the terminal device determines the difference between the RSRP of the CSI-RS and the target value as the RSRP of the SSB. Among them, historical CSI-RS refers to the CSI-RS sent by the network device before the current point in time, and historical SSB refers to the SSB sent by the network device before the current point in time. Optionally, the duration between the measurement time point of the historical CSI-RS and the measurement time point of the historical SSB is within a target duration range.

In this embodiment of the present application, the terminal device directly uses the RSRP of the CSI-RS to determine the RSRP of the SSB that has a QCL relationship with the CSI-RS. Then, the RSRP of the SSB can be obtained without measurement, which can save the power consumption of the terminal device. .

In the embodiment of this application, since the CSI-RS is a reference signal indicated by the network device through the relationship indication information, it means that the quality of the transmission channel corresponding to the CSI-RS satisfies the quality condition. Correspondingly, the CSI-RS has a QCL relationship with the reference signal. The quality of the transmission channel corresponding to the SSB also meets the quality conditions. In this case, the index and time point of the SSB are updated to the first data set. Subsequently, the SSB can be directly queried from the first data set and determined based on the SSB. Monitoring timing. In addition, the terminal device obtains the RSRP of the SSB, updates the RSRP of the SSB, and the corresponding index and time point to the second data set, so that subsequent terminal devices can query the SSB with the highest RSRP from the second data set, based on the SSB with the highest RSRP. to determine the timing of monitoring.

Fourth, after measuring the RSRPs of multiple SSBs in the target SSB Burst Set, the terminal device updates the indexes and time points corresponding to the multiple SSBs, and the RSRPs of the multiple SSBs to the second data set. Among them, the time point corresponding to the SSB is the time point when the RSRP of the SSB is measured. Optionally, the time point at which the RSRP of the SSB is measured is the Slot number at which the RSRP of the SSB is measured.

In this embodiment of the present application, after the terminal device measures the RSRP of multiple SSBs, it updates the RSRP of the multiple SSBs, as well as the corresponding indexes and time points to the second data set, so that subsequent terminal devices can query the RSRP from the second data set. The highest SSB, thereby determining the monitoring timing based on the SSB with the highest RSRP.

In the fifth method, when the terminal device successfully receives the PDCCH based on the target monitoring opportunity, it determines the SSB that has a QCL relationship with the DMRS of the PDCCH; updates the index and time point corresponding to the SSB to the first data set. Among them, the time point corresponding to the SSB is the time point when the PDCCH is received. Optionally, the time point at which the PDCCH is received is the slot number at which the PDCCH is received.

In the embodiment of the present application, the terminal equipment successfully receives the PDCCH based on the target monitoring opportunity, which can indicate that the channel quality of the transmission channel corresponding to the SSB used to determine the target monitoring opportunity still meets the quality conditions at the time point when the PDCCH is received. In this case, the index corresponding to the SSB and the time point are updated to the first data set to facilitate subsequent querying of the SSB directly from the first data set, and the target monitoring opportunity is determined based on the SSB.

It should be noted that the time point corresponding to the SSB updated to the second data set can also be the first Slot number of the SSB Burst Set where the SSB is located, and the embodiment of the present application does not limit this.

Figure 5 is a schematic diagram of the database. Referring to Figure 5, the database includes a first area and a second area. The first area stores the index of the corresponding SSB whose transmission channel quality meets the quality condition and the corresponding time point. The second area stores the indexes, RSRPs and corresponding time points of multiple SSBs.

It should be noted that the above-mentioned storage of the SSB index in the data set is only an exemplary explanation. In other embodiments, only the time point corresponding to the SSB or the time point corresponding to the SSB and the RSRP are stored in the data set, not in the data set. In which the index of SSB is stored.

The embodiments of the present application provide multiple scenarios for updating the first data set and the second data set to ensure that the latest corresponding index and time point of the SSB whose transmit channel quality meets the quality condition and the latest RSRP of the SSB are updated to In the data set, the terminal equipment can monitor the PDCCH based on the SSB whose corresponding transmission channel quality meets the quality conditions in history or the SSB with the highest RSRP among the SSBs sent in history. This method can significantly improve the reception success rate of PDCCH and avoid The error detection, missed detection and repeated retransmission combination of PDCCH enable the terminal equipment to quickly and successfully receive public control information based on PDCCH. It should be noted that the various scenarios for updating the data set mentioned above are only illustrative descriptions. The data set can also be updated in other scenarios, and the embodiments of the present application do not limit this.

Figure 6 shows a flow chart of a PDCCH monitoring method provided by an exemplary embodiment of the present application. In this embodiment, the terminal equipment determines whether to monitor the PDCCH based on SSB. When it is determined that the PDCCH is to be monitored based on SSB Next, determine the target SSB Burst Set to select the target SSB. Referring to Figure 6, the method includes:

601. When the terminal equipment meets the target configuration conditions, determine the earliest monitoring opportunity among multiple monitoring opportunities for the PDCCH.

When the terminal device meets the target configuration conditions, the transmission channels corresponding to the multiple SSBs in the target SSB Burst Set are different. Therefore, the quality of the transmission channels corresponding to the multiple SSBs in the target SSB Burst Set is different. In this case, the terminal The device can select the monitoring opportunity of PDCCH sent on a channel with good quality based on SSB. Therefore, in this case, the terminal equipment needs to monitor the PDCCH based on the SSB, that is, first select the corresponding SSB with good transmission channel quality, determine the monitoring opportunity corresponding to the SSB, and monitor the PDCCH at the monitoring opportunity.

Optionally, the target configuration conditions include: the terminal device is in a connected state or an idle state, and the configured search space of the PDCCH is Search Space Zero. Or, the terminal device is in an idle state, and the configured search space of the PDCCH is a search space other than Search Space Zero. Wherein, the network device is used to send PDCCH to the terminal device at multiple monitoring opportunities in the search space.

Optionally, when the terminal device is in a connected state and the configured search space of the PDCCH is a search space other than Search SpaceZero, the terminal device monitors the PDCCH according to the configured monitoring period. Since the terminal device is in a connected state and the configured PDCCH search space is a search space other than Search Space Zero, multiple SSBs in the SSB Burst Set are sent through multiple beams with the same scanning direction, so , the transmit channel quality corresponding to these multiple SSBs is the same, therefore, the transmit channel quality of the PDCCH corresponding to the multiple monitoring opportunities is the same. In this case, the terminal equipment does not need to determine the monitoring opportunity based on the SSB.

In a possible implementation manner, the terminal equipment determines the earliest monitoring opportunity among multiple monitoring opportunities of the PDCCH, including: the terminal equipment determines the configured DRX (Discontinuous Reception, discontinuous reception) cycle, which is located after the current time point. An On Duration (activation period); determines the earliest monitoring opportunity among multiple monitoring opportunities in the On duration.

Among them, the DRX cycle consists of On Duration and Opportunity for DRX (sleep period). Within OnDuration, the terminal device monitors and receives PDCCH. Within Opportunity for DRX, the terminal device does not receive PDCCH to save power consumption. Therefore, when the terminal equipment receives the PDCCH according to the configured DRX cycle, the first monitoring opportunity within the first On Duration after the current time point is the earliest monitoring opportunity among the multiple monitoring opportunities.

Optionally, the DRX cycle is a DRX cycle when the terminal device is in a connected state, or a DRX cycle when the terminal device is in an idle state, which is not limited in this embodiment of the present application.

In the embodiment of the present application, the terminal device determines the earliest monitoring opportunity among multiple monitoring opportunities within On Duration, and determines the target SSB Burst Set based on the earliest monitoring opportunity. Then, the target monitoring opportunity is subsequently determined based on the SSB in the SSB Burst Set. During the On Duration of the DRX cycle, the terminal equipment only needs to monitor the PDCCH during the On Duration, which can save the power consumption of the terminal.

602. The terminal device determines multiple SSB Burst Sets sent by the network device between the current time point and the earliest monitoring opportunity, and the sending time point corresponding to the last SSB in each SSB Burst Set.

Optionally, the terminal device stores the transmission cycle of the SSB Burst Set and the time domain position of each SSB in the SSB Burst Set in a transmission cycle. Correspondingly, the terminal device can be based on the transmission cycle and the SSB Burst Set. The time domain position of each SSB in a transmission cycle can be used to determine multiple SSB Burst Sets between the current time point and the earliest monitoring opportunity. It can also determine the transmission time corresponding to the last SSB in each SSB Burst Set. point.

603. The terminal device selects a target SSB Burst Set from multiple SSB Burst Sets. The duration between the sending time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity is the shortest, and is not less than the first duration.

Optionally, the first duration is any duration. Optionally, the first duration is the sum of the second duration, the third duration and the fourth duration. Among them, the second duration is the duration consumed for RSRP measurement of multiple SSBs; the third duration is the duration consumed for determining the target SSB from multiple SSBs; and the fourth duration is the duration consumed for determining the target monitoring opportunity of the PDCCH based on the target SSB. of duration.

In the embodiment of this application, the time period between the sending time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity is not less than the first time period. This ensures that the terminal device has enough time to measure and determine RSRP. Target SSB and determine the target monitoring timing based on the target SSB. Moreover, the duration between the sending time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity is the shortest, thus ensuring that the interval between the time point of measuring the SSB and the PDCCH monitoring opportunity is the shortest, thereby ensuring that Within this interval, the quality of the transmission channel corresponding to the SSB changes minimally, thereby ensuring the quality of the PDCCH transmission channel corresponding to the target monitoring opportunity determined based on the SSB.

It should be noted that the above target configuration conditions are only illustrative, and the target configuration conditions can also be other conditions. In addition, steps 601-603 are only one implementation method of determining the target SSB Burst Set. The target SSB Burst Set can also be determined through other methods, and this embodiment of the present application does not limit this.

Figure 7 is a schematic diagram of the process of determining the target SSB Burst Set. Referring to Figure 7, the earliest monitoring opportunity is MO1. Between the current time point (t0) and the earliest monitoring opportunity, the network device sends three SSB Burst Sets, of which, except for the first SSB Burst Set, the other two The duration between the sending time point corresponding to the last SSB in the SSB Burst Set and the earliest monitoring opportunity is less than the first duration. Therefore, the first SSB Burst Set is the target SSB Burst Set.

604. The terminal device measures the RSRP of multiple SSBs in the target SSB Burst Set.

Optionally, the terminal device uses an RF (Radio Frequency, radio frequency) module to measure the RSRP of multiple SSBs in the target SSB BurstSet. Among them, the RF module is a module used in terminal equipment to send and receive information. Optionally, the terminal device only turns on the RF module during the process of measuring the RSRP of multiple SSBs in the target SSB Burst Set. After the measurement, the terminal equipment turns off the RF module and enters the power saving state, which can avoid unnecessary power consumption. Among them, after measuring the RSRP of the SSB, the terminal device determines which power saving state it will enter based on the time interval between the target SSB Burst Set and On duration and the performance of the terminal device.

605. The terminal device determines the target SSB from the multiple SSBs based on the RSRPs of the multiple SSBs.

606. The terminal equipment monitors the PDCCH based on the target SSB, where the DMRS of the PDCCH has a QCL relationship with the target SSB.

The implementation of steps 605-606 is the same as the implementation of steps 304-305, and will not be described again here.

Optionally, after receiving the PDCCH, the terminal device processes the PDCCH. For example, the PDCCH is demodulated to obtain the DCI information in the PDCCH. Optionally, the terminal equipment processes the PDCCH through the baseband module. Among them, the baseband module is a module used in terminal equipment to process information.

Figure 8 is a schematic diagram of the working status of the RF module and baseband module in the terminal equipment. Referring to Figure 8, the duration between the sending time point of the last SSB in the target SSBBurst Set and the earliest monitoring opportunity in On Duration is not less than the first duration. The radio frequency module is in the working state during the time period of measuring the target SSB Burst Set and the time period of receiving the PDCCH, and is in the off state during other time periods. The baseband module is in the working state during the time period when the SSB with the highest RSRP is selected, the time period when the target monitoring timing is determined based on the SSB with the highest RSRP, and the time period when the received PDCCH is processed. It is in the off state during other time periods, which can save terminal equipment. of power consumption.

Figure 9 is a schematic diagram of the process of determining target monitoring timing. Referring to Figure 9, the left side shows five scenarios for updating the database. The first scenario is that during the cell search or system message update process of the cell, the SSB is received and the target PDCCH exists. The second scenario is random access. The third scenario is that the relationship indication information is received in the connected state. The fourth scenario is to measure the RSRP of multiple SSBs in the target SSB Burst Set. The fifth scenario is to successfully receive the PDCCH at the target-based monitoring opportunity. The specific methods of updating the database in these five scenarios have been elaborated in the corresponding embodiment in Figure 3 and will not be described again here.

Continuing to refer to Figure 9, when the target configuration conditions are met, the process of the terminal device determining the target monitoring opportunity includes: querying the first target SSB, that is, requesting the first target SSB from the database, and receiving the first target SSB returned by the database. . When the first target SSB is available (the time period between the time point corresponding to the first target SSB and the current time point is not greater than the fifth time period), the target monitoring opportunity is determined directly based on the first target SSB. When the first target SSB is unavailable (the time period between the time point corresponding to the first target SSB and the current time point is greater than the fifth time period), the terminal device queries the second target SSB, that is, requests the second target SSB from the database. The target SSB receives the second target SSB returned by the database. When the second target SSB is available (the time period between the time point corresponding to the second target SSB and the current time point is not greater than the sixth time period), the target monitoring opportunity is determined directly based on the second target SSB. When the SSB is unavailable (the duration between the time point corresponding to the second target SSB and the current time point is greater than the sixth duration), initiate RSRP measurement, that is, measure the RSRP of multiple SSBs in the target SSB Burst Set. The RSRP of the SSB is updated to the database, and then the terminal device re-queries the second target SSB with the highest RSRP from the database. If the second target SSB is available, the target monitoring timing is determined based on the second target SSB.

The solution provided by the embodiment of this application considers that the DMRS of the PDCCH corresponding to each monitoring opportunity has a QCL relationship with the SSB in an SSBBurst Set, and the channel conditions of the SSB transmission channel that has a QCL relationship with the DMRS of the PDCCH are related to the transmission of the PDCCH. The channel conditions of the channels are similar, therefore, SSB is used to monitor the PDCCH. Since the target SSB is selected from multiple SSBs based on the RSRP of multiple SSBs, the transmission channel quality of the target SSB is relatively good. Therefore, monitoring the PDCCH corresponding to the DMRS that has a QCL relationship with the target SSB can ensure The terminal equipment monitors the PDCCH sent on the channel with good quality and improves the reception accuracy of the PDCCH.

The following are device embodiments of the present application, which can be used to perform method embodiments of the present application. For details not disclosed in the device embodiments of this application, please refer to the method embodiments of this application.

Please refer to Figure 10, which shows a structural block diagram of a PDCCH monitoring device provided by an exemplary embodiment of the present application. The PDCCH monitoring device is applied to terminal equipment. The PDCCH monitoring device includes:

RSRP measurement module 1001, used to measure the reference signal received power RSRP of multiple synchronization signal blocks SSB in the target synchronization signal burst set SSB Burst Set;

The target SSB determination module 1002 is used to determine the target SSB from the multiple SSBs based on the RSRP of multiple SSBs;

The PDCCH monitoring module 1003 is configured to monitor the physical downlink control channel PDCCH based on the target SSB, where the demodulation reference signal DMRS of the PDCCH has a quasi-co-located QCL relationship with the target SSB.

In a possible implementation, the PDCCH monitoring module 1003 is specifically used to determine the target monitoring timing based on the index of the target SSB. The DMRS of the PDCCH corresponding to the target monitoring timing has a QCL relationship with the target SSB; at the target monitoring timing, monitor the PDCCH .

In one possible implementation, the target SSB determination module 1002 is specifically configured to select the SSB with the highest RSRP from multiple SSBs; and determine the SSB with the highest RSRP as the target SSB.

In a possible implementation, the time period between the transmission time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity among the multiple monitoring opportunities of the PDCCH is not less than the first time period;

The first duration is the sum of the second duration, the third duration and the fourth duration;

The second duration is the duration consumed for RSRP measurement on multiple SSBs;

The third duration is the time consumed to determine the target SSB from multiple SSBs;

The fourth duration is the duration consumed to determine the target monitoring timing of the PDCCH based on the target SSB.

In a possible implementation, the device further includes:

The first determination module is used to determine the earliest monitoring opportunity among the multiple monitoring opportunities of the PDCCH, determine the multiple SSB Burst Sets sent by the network equipment between the current time point and the earliest monitoring opportunity, and the number of SSB Burst Sets in each SSB Burst Set. The sending time point corresponding to the last SSB;

The target SSB determination module 1002 is also used to select a target SSB BurstSet from the above-mentioned multiple SSB Burst Sets. The time between the sending time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity is the shortest, and is not less than the A long time.

In a possible implementation, the first determination module is used to determine the first activation period On Duration after the current time point in the configured discontinuous reception DRX cycle; determine among the multiple monitoring opportunities in On duration. The earliest monitoring opportunity.

In a possible implementation manner, the RSRP measurement module 1001 is specifically configured to measure the multiple values in the target SSB Burst Set when the time between the time point corresponding to the first target SSB and the current time point is greater than the fifth time period. RSRP of SSBs; wherein, the first target SSB was sent by the network device before the current time point, and the quality of the transmission channel corresponding to the first target SSB meets the quality condition.

In a possible implementation, the RSRP measurement module 1001 is specifically configured to set the time period between the time point corresponding to the first target SSB and the current time point to be greater than the fifth time period, and the time point corresponding to the second target SSB and the current time point. When the duration between time points is greater than the sixth duration, measure the RSRP of multiple SSBs in the target SSB Burst Set; where the second target SSB is the SSB with the highest RSRP among the SSBs sent by the network device before the current time point.

In a possible implementation, the time point corresponding to the first target SSB is stored in the first data set;

The time point corresponding to the second target SSB is stored in the second data set;

The installation also includes:

A time point query module is used to query the time point corresponding to the first target SSB from the first data set, and to query the time point corresponding to the second target SSB from the second data set.

In a possible implementation, the device further includes:

The storage module is used to update the time point corresponding to the SSB to the first data set when the SSB sent by the network device is received and the target PDCCH exists; wherein, the DMRS of the target PDCCH has a QCL relationship with the SSB, and the SSB corresponding The time point is the reception time point of SSB.

In a possible implementation, the storage module is also used to update the time point corresponding to the SSB used in the random access to the first data set when the random access is successful. The time point corresponding to the SSB is the time point for initiating the random access. The time point of access; or, in the case of random access failure, update the time point corresponding to the SSB obtained during the random access process and the RSRP of the SSB to the second data set, and the time point corresponding to the SSB is the time point of the SSB. Receive time point.

In a possible implementation, the storage module is also configured to store the time corresponding to the SSB when receiving relationship indication information sent by the network device, and the relationship indication information indicates the QCL relationship between the DMRS of the PDCCH and the SSB. The point is updated to the first data set; the time point corresponding to the SSB and the RSRP of the SSB are updated to the second data set; where the time point corresponding to the SSB is the receiving time point of the SSB.

In a possible implementation, the storage module is also used to receive relationship indication information sent by the network device, and the relationship indication information indicates the QCL relationship between the DMRS of the PDCCH and the channel state information reference signal CSI-RS. Next, update the time point corresponding to the SSB that has a QCL relationship with the CSI-RS to the first data set; update the time point corresponding to the SSB and the RSRP of the SSB to the second data set; where the time point corresponding to the SSB is SSB receiving time point.

In a possible implementation, the storage module is also used to obtain the RSRP of the historical CSI-RS and the RSRP of the historical SSB that has a QCL relationship with the historical CSI-RS; determine the target value, and the target value is the RSRP of the historical CSI-RS The difference between the RSRP of the historical SSB and the RSRP of the historical SSB; the difference between the RSRP of the CSI-RS and the target value is determined as the RSRP of the SSB.

In a possible implementation, the storage module is also used to update the time points corresponding to the multiple SSBs and the RSRPs of the multiple SSBs to the second data set. The time points corresponding to the SSBs are the time when the RSRPs of the SSBs are measured. point.

In a possible implementation, the storage module is also used to determine the SSB that has a QCL relationship with the DMRS of the PDCCH when the PDCCH is successfully received; update the time point corresponding to the SSB to the first data set, and the SSB corresponding The time point is the time point when the PDCCH is received.

In a possible implementation, the PDCCH monitoring module 1003 is also configured to monitor the PDCCH based on the first target SSB when the time period between the time point corresponding to the first target SSB and the current time point is not greater than the fifth time period. , the DMRS of the PDCCH has a QCL relationship with the first target SSB.

In a possible implementation, the PDCCH monitoring module 1003 is also configured to set the time between the time point corresponding to the first target SSB and the current time point to be greater than the fifth time period, and the time point between the second target SSB and the current time. When the duration between points is not greater than the sixth duration, the PDCCH is monitored based on the second target SSB, and the DMRS of the PDCCH has a QCL relationship with the second target SSB.

In a possible implementation, the network device is configured to send PDCCH to the terminal device at multiple monitoring opportunities;

The RSRP measurement module 1001 is configured to measure the RSRP of multiple SSBs in the target SSBBurst Set when the terminal device meets the target configuration conditions. Wherein, when the terminal device meets the target configuration conditions, multiple SSBs in the target SSBBurst Set The transmission channels corresponding to SSB are different.

The solution provided by the embodiment of this application considers that the DMRS of the PDCCH corresponding to each monitoring opportunity has a QCL relationship with the SSB in an SSBBurst Set, and the channel conditions of the SSB transmission channel that has a QCL relationship with the DMRS of the PDCCH are related to the transmission of the PDCCH. The channel conditions of the channels are similar, therefore, SSB is used to monitor the PDCCH. Since the target SSB is selected from multiple SSBs based on the RSRP of multiple SSBs, the transmission channel quality of the target SSB is relatively good. Therefore, monitoring the PDCCH corresponding to the DMRS that has a QCL relationship with the target SSB can ensure The terminal equipment monitors the PDCCH sent on the channel with good quality and improves the reception accuracy of the PDCCH.

It should be noted that when implementing the functions of the device provided by the above embodiments, only the division of the above functional modules is used as an example. In practical applications, the above functions can be allocated to different functional modules according to needs, that is, The internal structure of the terminal device is divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be described again here.

Figure 11 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application. The communication device includes: a processor 1101, a receiver 1102, a transmitter 1103, a memory 1104 and a bus 1105.

The processor 1101 includes one or more processing cores. The processor 1101 executes various functional applications and information processing by running software programs and modules.

The receiver 1102 and the transmitter 1103 can be implemented as a communication component, and the communication component can be a communication chip.

The memory 1104 is connected to the processor 1101 through a bus 1105.

The memory 1104 can be used to store at least one program code, and the processor 1101 is used to execute the at least one program code to implement each step in the above method embodiment.

Furthermore, the communication device may be a terminal device or a network device. The memory 1104 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof. Volatile or non-volatile storage devices include but are not limited to: magnetic disks or optical disks, EEPROM (Electrically Erasable Programmable Read Only Memory) , electrically erasable programmable read-only memory), EPROM (Erasable Programmable Read Only Memory, erasable programmable read-only memory), SRAM (Static Random Access Memory, static anytime access memory), ROM (ReadOnly Memory, only Read memory), magnetic memory, flash memory, programmable read only memory (Programmable Read Only Memory, PROM).

This application also provides a computer-readable storage medium that stores at least one program code, and the at least one program code is loaded and executed by the processor to implement the PDCCH monitoring method shown in the above embodiments.

This application also provides a computer program product, which stores at least one program code, and the at least one program code is loaded and executed by the processor to implement the PDCCH monitoring method shown in the above embodiments.

According to another aspect of the embodiment of the present application, a chip is provided. The chip includes programmable logic circuits and/or program instructions. When the chip is run on a terminal device, it is used to implement the PDCCH monitoring method in the above aspect.

The above serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art can understand that all or part of the steps in the PDCCH monitoring method of the above embodiment can be completed by hardware, or can be completed by instructing the relevant hardware through a program. The program can be stored in a computer-readable storage. Among the media, the storage media mentioned above can be read-only memory, magnetic disks or optical disks, etc.

The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims (22)

1. A PDCCH monitoring method, the method comprising:

measuring Reference Signal Receiving Power (RSRP) of a plurality of Synchronous Signal Blocks (SSBs) in a target SSB Burst Set (SSB Burst Set), wherein the time length between a transmission time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring time in a plurality of monitoring time of a Physical Downlink Control Channel (PDCCH) is not less than a first time length, the first time length is the sum of a second time length, a third time length and a fourth time length, the second time length is the time length consumed for RSRP measurement of the SSBs, the third time length is the time length consumed for determining the target SSB from the SSBs, and the fourth time length is the time length consumed for determining the target monitoring time of the PDCCH based on the target SSB;

determining a target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs;

and monitoring the PDCCH based on the target SSB, wherein a demodulation reference signal (DMRS) of the PDCCH has a quasi co-location QCL relation with the target SSB.

2. The method of claim 1, wherein the monitoring the physical downlink control channel, PDCCH, based on the target SSB comprises:

determining a target monitoring opportunity based on the index of the target SSB, wherein the DMRS of the PDCCH corresponding to the target monitoring opportunity has a QCL relationship with the target SSB;

and monitoring the PDCCH at the target monitoring time.

3. The method of claim 1, wherein the determining a target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs comprises:

selecting an SSB with the highest RSRP from the SSBs;

and determining the SSB with the highest RSRP as the target SSB.

4. The method according to claim 1, wherein before the measuring the reference signal received power RSRP of the plurality of synchronization signal blocks SSB in the target synchronization signal Burst Set SSB Burst Set, the method further comprises:

determining an earliest monitoring opportunity of a plurality of monitoring opportunities of the PDCCH;

determining a plurality of SSB Burst sets transmitted by the network equipment between the current time point and the earliest monitoring time point and a transmission time point corresponding to the last SSB in each SSB Burst Set;

selecting the target SSB Burst Set from the SSB Burst sets, wherein the time length between the transmission time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring time is shortest and is not less than the first time length.

5. The method of claim 4, wherein the determining an earliest monitoring occasion of a plurality of monitoring occasions of the PDCCH comprises:

determining a first active period On Duration after the current time point in the configured discontinuous reception DRX period;

the earliest monitoring occasion of the plurality of monitoring occasions in the On duration is determined.

6. The method according to claim 1, wherein measuring the reference signal received power RSRP of a plurality of synchronization signal blocks SSB in the target synchronization signal Burst Set SSB Burst Set comprises:

measuring RSRP of a plurality of SSBs in the target SSB Burst Set under the condition that the duration between the time point corresponding to the first target SSB and the current time point is longer than the fifth duration;

the first target SSB is sent by the network equipment before the current time point, and the sending channel quality corresponding to the first target SSB meets the quality condition.

7. The method of claim 6, wherein measuring RSRP of the plurality of SSBs in the target SSB Burst Set if a time period between a time point corresponding to the first target SSB and a current time point is greater than a fifth time period, comprises:

Measuring RSRP of a plurality of SSBs in the target SSB Burst Set under the condition that the duration between the time point corresponding to the first target SSB and the current time point is longer than the fifth duration and the duration between the time point corresponding to the second target SSB and the current time point is longer than a sixth duration;

the second target SSB is the SSB with the highest RSRP among SSBs sent by the network device before the current time point.

8. The method of claim 7, wherein the step of determining the position of the probe is performed,

the time point corresponding to the first target SSB is stored in a first data set;

the corresponding time point of the second target SSB is stored in a second data set;

the method further comprises the steps of:

inquiring a time point corresponding to the first target SSB from the first data set;

and inquiring the time point corresponding to the second target SSB from the second data set.

9. The method of claim 8, wherein the method further comprises:

updating a time point corresponding to the SSB to the first data set when the SSB sent by the network equipment is received and a target PDCCH exists;

the DMRS of the target PDCCH and the SSB have a QCL relationship, and the time point corresponding to the SSB is the receiving time point of the SSB.

10. The method of claim 8, wherein the method further comprises:

under the condition that the random access is successful, updating a time point corresponding to SSB used by the random access to the first data set, wherein the time point corresponding to SSB is a time point for initiating the random access; or,

and under the condition of random access failure, updating the time point corresponding to the SSB acquired in the random access process and the RSRP of the SSB to the second data set, wherein the time point corresponding to the SSB is the receiving time point of the SSB.

11. The method of claim 8, wherein the method further comprises:

updating a time point corresponding to the SSB to the first data set when relation indication information sent by the network device is received and indicates a QCL relation between the DMRS and the SSB of the PDCCH; updating the time point corresponding to the SSB and the RSRP of the SSB to the second data set;

the time point corresponding to the SSB is the receiving time point of the SSB.

12. The method of claim 8, wherein the method further comprises:

Updating a time point corresponding to an SSB having a QCL relationship with the CSI-RS to the first data set when relationship indication information sent by the network device is received and the relationship indication information indicates the QCL relationship between the DMRS of the PDCCH and a channel state information reference signal CSI-RS; updating the time point corresponding to the SSB and the RSRP of the SSB to the second data set;

the time point corresponding to the SSB is the receiving time point of the SSB.

13. The method of claim 12, wherein the updating the point in time for the SSB and the RSRP for the SSB to the second data set is preceded by:

acquiring RSRP of a historical CSI-RS and RSRP of a historical SSB having a QCL relation with the historical CSI-RS;

determining a target value, which is a difference between the RSRP of the historical CSI-RS and the RSRP of the historical SSB;

and determining the difference value between the RSRP of the CSI-RS and the target value as the RSRP of the SSB.

14. The method of claim 8, wherein after the measuring the reference signal received power RSRP of the plurality of synchronization signal blocks SSB in the target synchronization signal Burst Set SSB Burst Set, the method further comprises:

Updating the time points corresponding to the SSBs and the RSRP of the SSBs to the second data set, wherein the time points corresponding to the SSBs are time points for measuring the RSRP of the SSBs.

15. The method of claim 8, wherein the method further comprises:

under the condition that the PDCCH is successfully received, determining SSB with a QCL relation with the DMRS of the PDCCH;

and updating the time point corresponding to the SSB to the first data set, wherein the time point corresponding to the SSB is the time point of receiving the PDCCH.

16. The method according to any one of claims 6-15, further comprising:

and under the condition that the duration between the time point corresponding to the first target SSB and the current time point is not longer than the fifth duration, monitoring the PDCCH based on the first target SSB, wherein the DMRS of the PDCCH has a QCL relation with the first target SSB.

17. The method according to any one of claims 6-15, further comprising:

and monitoring the PDCCH based on the second target SSB under the condition that the duration between the time point corresponding to the first target SSB and the current time point is longer than the fifth duration and the duration between the time point of the second target SSB and the current time point is not longer than the sixth duration, wherein the DMRS of the PDCCH has a QCL relationship with the second target SSB.

18. The method according to any of claims 1-15, wherein a network device is configured to send the PDCCH to a terminal device at a plurality of monitoring occasions;

the reference signal received power RSRP of the plurality of synchronization signal blocks SSB in the measurement target synchronization signal Burst Set SSB Burst Set includes:

and measuring RSRP of a plurality of SSBs in the target SSB Burst Set under the condition that the terminal equipment meets the target configuration condition, wherein the transmission channels corresponding to the plurality of SSBs in the target SSB Burst Set are different under the condition that the terminal equipment meets the target configuration condition.

19. A PDCCH monitoring apparatus, the apparatus comprising:

the RSRP measurement module is configured to measure reference signal received power RSRP of a plurality of synchronization signal blocks SSB in a target synchronization signal Burst Set SSB Burst Set, where a duration between a transmission time point corresponding to a last SSB in the target SSB Burst Set and an earliest monitoring occasion in a plurality of monitoring occasions of a physical downlink control channel PDCCH is not less than a first duration, where the first duration is a sum of a second duration, a third duration and a fourth duration, where the second duration is a duration consumed for RSRP measurement of the plurality of SSBs, and where the third duration is a duration consumed for determining the target SSB from the plurality of SSBs, and where the fourth duration is a duration consumed for determining a target monitoring occasion of the PDCCH based on the target SSB;

A target SSB determination module configured to determine a target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs;

and the PDCCH monitoring module is used for monitoring the PDCCH based on the target SSB, wherein a demodulation reference signal (DMRS) of the PDCCH and the target SSB have a quasi co-location QCL relation.

20. A terminal device, characterized in that the terminal device comprises a processor and a memory; the memory stores at least one program code for execution by the processor to implement the PDCCH monitoring method of any one of claims 1 to 18.

21. A computer readable storage medium, characterized in that the storage medium stores at least one program code for execution by a processor to implement the PDCCH monitoring method of any of claims 1 to 18.

22. A chip comprising programmable logic and/or program instructions for implementing the PDC CH monitoring method of any of claims 1 to 18 when the chip is run on a terminal device.