CN113677028B

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

Info

Publication number: CN113677028B
Application number: CN202110959513.5A
Authority: CN
Inventors: 岁灿
Original assignee: Zeku Technology Beijing Corp Ltd
Current assignee: Zeku Technology Beijing Corp Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2023-09-29
Anticipated expiration: 2041-08-20
Also published as: CN113677028A

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 method, device, equipment and storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a PDCCH monitoring method, a PDCCH monitoring device and a PDCCH storage medium.

Background

The terminal device needs to monitor the PDCCH (Physical Downlink Control Channel ) and obtain DCI (Downlink Control Information, downlink control information) in the PDCCH, so as to receive the common control information in the PDSCH (Physical Downlink Shared Channel ) indicated by the DCI.

The network device configures a plurality of monitoring occasions for the terminal device, and sends PDCCH to the terminal at the monitoring occasions respectively, and the quality of the sending channel of the PDCCH is different at different monitoring occasions. The terminal device expects to monitor the PDCCH transmitted on a good quality channel, and therefore how to monitor the PDCCH is a hotspot for research.

Disclosure of Invention

The embodiment of the application provides a PDCCH monitoring method, a device, equipment and a storage medium, which can ensure that terminal equipment monitors PDCCH transmitted on a channel with good quality. The technical proposal is as follows:

according to an aspect of the embodiment of the present application, there is provided a PDCCH monitoring method, including:

measuring Reference Signal Received Power (RSRP) of a plurality of Synchronous Signal Blocks (SSB) in a target synchronous signal Burst Set (SSB Burst Set);

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

and monitoring a Physical Downlink Control Channel (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.

According to another aspect of the embodiment of the present application, there is provided a PDCCH monitoring apparatus, the apparatus including:

the RSRP measurement module is used for measuring reference signal received power RSRP of a plurality of synchronous signal blocks SSB in the target synchronous signal Burst Set SSB Burst Set;

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 a physical downlink control channel 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.

According to another aspect of an embodiment of the present application, there is provided a terminal device including a processor and a memory; the memory stores at least one program code for execution by the processor to implement the PDCCH monitoring method as described in the above aspects.

According to another aspect of embodiments of the present application, there is provided a computer readable storage medium storing at least one program code for execution by a processor to implement the PDCCH monitoring method as described in the above aspect.

According to another aspect of embodiments of the present application, there is provided a computer program product storing at least one program code loaded and executed by a processor to implement the PDCCH monitoring method of the above aspect.

According to another aspect of the embodiments of the present application, there is provided a chip including programmable logic circuits and/or program instructions for implementing the PDCCH monitoring method described in the above aspect when the chip is run on a terminal device.

According to the scheme provided by the embodiment of the application, the fact that the DMRS of the PDCCH corresponding to each monitoring time has a QCL relation with the SSB in one SSB Burst Set is considered, and the channel condition of the transmission channel of the SSB having the QCL relation with the DMRS of the PDCCH is similar to the channel condition of the transmission channel of the PDCCH is considered, so that the SSB is utilized to monitor the PDCCH. Because the target SSB is selected from the SSBs based on the RSRP of the SSBs, the quality of the transmission channel of the target SSB is better, so that the monitoring of the PDCCH corresponding to the DMRS having the QCL relationship with the target SSB can ensure that the terminal device monitors the PDCCH transmitted on the channel with good quality, and improve the receiving accuracy of the PDCCH.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates a schematic diagram of an implementation environment provided by an exemplary embodiment of the present application;

fig. 2 is a flowchart illustrating a PDCCH monitoring method according to an exemplary embodiment of the present application;

fig. 3 is a flowchart illustrating a PDCCH monitoring method according to an exemplary embodiment of the present application;

fig. 4 is a schematic diagram showing an association relationship between SSB and monitoring opportunity of PDCCH according to an exemplary embodiment of the present application;

FIG. 5 illustrates a schematic diagram of a database provided by an exemplary embodiment of the present application;

fig. 6 is a flowchart illustrating a PDCCH monitoring method according to an exemplary embodiment of the present application;

FIG. 7 is a schematic diagram of a process for determining a target SSB Burst Set according to an exemplary embodiment of the present application;

fig. 8 is a schematic diagram showing an operating state of an RF module and a baseband module according to an exemplary embodiment of the present application;

FIG. 9 is a schematic diagram of a process for determining a target monitoring opportunity according to an exemplary embodiment of the present application;

fig. 10 is a block diagram illustrating a structure of a PDCCH monitoring apparatus according to an exemplary embodiment of the present application;

fig. 11 is a block diagram showing a structure of a terminal device according to an exemplary embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

References herein to "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

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

Referring to fig. 1, a block diagram of a communication system according to an exemplary embodiment of the present application is shown, where the communication system includes: a terminal device 101 and a network device 102.

Terminal Equipment 101 includes UEs (User Equipment), access terminals, subscriber units, subscriber stations, mobile stations, remote terminals, mobile devices, wireless communication devices, user agents, or User Equipment. Optionally, the terminal device 101 further includes a cellular phone, a cordless phone, a SIP (Session Initiation Protocol ) phone, a WLL (Wireless Local Loop, wireless local loop) station, a PDA (Personal digital Assistant), a handheld device with a wireless communication function, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in 5GS (5 th Generation System, fifth generation mobile communication system) or a terminal device in a future evolved PLMN (Pub 1ic Land Mobi1e Network), and the like, which the embodiment of the present application is not limited. Alternatively, the number of terminal devices 101 is any number, and one or more terminal devices 101 are distributed in a cell managed by each network device 102.

Network device 102 is a device deployed in an access network to provide wireless communication functionality for terminal device 101. The network devices 102 include various forms of macro base stations, micro base stations, relay stations, access points, and the like. Illustratively, in an LTE (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 (names of base stations in an LTE system) in EUTRAN; in a 5G NR (New Radio) system, the network device 102 is a RAN (Radio Access Network ) or one or more gnbs in the RAN (names of base stations in the 5G NR system).

The "5G NR system" in the embodiment of the present application can also be referred to as a 5G system or an NR system, but the meaning thereof can be understood by those skilled in the art. The technical scheme described in the embodiment of the application is applicable to other communication systems such as an LTE system, a 5G NR system, a subsequent evolution system of the 5G NR system, an NB-IoT (Narrow Band Internet of Things ) system and the like, and the embodiment of the application is not limited to this.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

Fig. 2 shows a flowchart of a PDCCH monitoring method according to an exemplary embodiment of the present application, and referring to fig. 2, the method includes:

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

The SSB Burst Set (Synchronization Signal Block Burst Set, synchronization signal Burst Set) includes a plurality of SSBs (Synchronization Signal Block, synchronization signal blocks) that are transmitted through a plurality of beams (beams) having different directions, that is, transmission channels of the SSBs are different, and thus transmission channel qualities corresponding to the SSBs are also different.

The network device periodically sends the SSB Burst Set to the terminal device, and sequentially sends the SSBs in the SSB Burst Set in the order of the SSBs in the SSB Burst Set in each period. In one possible implementation manner, a duration between a transmission time point corresponding to a last SSB in the target SSB Burst Set and an earliest monitoring occasion in the plurality of monitoring occasions of the PDCCH is not less than the first duration.

Optionally, the first duration is an arbitrary duration. Optionally, the first duration is a sum of the second duration, the third duration, and the fourth duration. Wherein the second duration is a duration consumed for RSRP measurement of the plurality of SSBs; the third duration is the duration consumed by selecting the SSB with the highest RSRP from the SSBs; the fourth time period is a time period consumed for determining the target monitoring opportunity based on the SSB with the highest RSRP.

The RSRP (Reference Signal Receiving Power, reference signal received power) can reflect the signal strength of the corresponding SSB, and can further reflect the channel quality of the SSB. The RSRP strength of the SSB and the transmission channel quality corresponding to the SSB are in positive correlation, that is, the stronger the RSRP strength of the SSB, the better the transmission channel quality corresponding to the SSB.

In the embodiment of the application, because the duration between the sending time point corresponding to the last SSB in the SSB Burst Set and the earliest monitoring time is not less than the first duration, the terminal equipment has enough time to perform RSRP measurement, select the SSB with the highest RSRP and determine the target monitoring time based on the SSB with the highest RSRP.

202. The terminal device determines a target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs.

Optionally, the target SSB is an SSB with the highest RSRP of the SSBs, or the target SSB is any SSB with an RSRP greater than the reference RSRP of the SSBs, which is not limited by the embodiment of the present application.

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

Among them, DMRS (Demodulatin Reference Signal, demodulation reference signal) of PDCCH is used for demodulating PDCCH. The DMRS of the PDCCH has a QCL (Quasi Co-Location) relationship with the SSB, indicating that the transmission channel conditions of the PDCCH and the SSB are the same or similar.

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

Fig. 3 shows a flowchart of a PDCCH monitoring method according to an exemplary embodiment of the present application, in this embodiment, a terminal device first obtains a corresponding historical SSB with good transmission channel quality, and then selects an SSB with the highest RSRP through RSRP measurement when the historical SSB is unavailable. Referring to fig. 3, the method includes:

301. the terminal equipment acquires a first target SSB, the first target SSB is transmitted by the network equipment before the current time point, and the quality of a transmission channel corresponding to the first target SSB meets the quality condition.

Wherein, the quality of the transmission channel corresponding to the first target SSB satisfies the quality condition, which indicates that the quality of the channel transmitting the first target SSB is good. Illustratively, the quality condition satisfied by the transmission channel quality may include, but is not limited to, being able to accurately receive information transmitted by the network device at the channel quality, or the RSRP of the received information being greater than a reference threshold at the channel quality, etc.

In one possible implementation, the point in time corresponding to the first target SSB is stored in the first data set. Correspondingly, the terminal device queries a time point corresponding to the first target SSB from the first data set. Wherein the first data set is used for storing time points of SSBs for which historically corresponding transmission channel quality satisfies a quality condition. Optionally, the first data Set is further used to store other information of the SSB, for example, an index of the SSB whose transmission channel quality historically meets the quality condition, that is, an identifier of the SSB, may indicate the SSB, and is used to distinguish the SSB from other SSBs in the SSB Burst Set where the SSB is located. For example, there are four SSBs in an SSB Burst Set, the first SSB has an index of "SSB0", the second SSB has an index of "SSB1", the third SSB has an index of "SSB2", and the fourth SSB has an index of "SSB3", which is not limited in this embodiment of the present application.

Optionally, the first data set is stored in the terminal device, and the terminal device continuously updates the first data set, for example, the terminal device updates the SSB to the first data set whenever the terminal device obtains the latest SSB whose corresponding transmission channel quality satisfies the quality condition. The implementation manner of updating the first data set by the terminal equipment comprises the following steps: after acquiring the latest SSB which corresponds to the transmission channel quality and meets the quality condition, the terminal equipment deletes the original SSB information which meets the condition in the first data set, and stores the latest time point which meets the condition in the first data set, or the terminal equipment does not delete the original SSB information in the first data set, and directly stores the latest time point which meets the condition in the first data set. Optionally, the first data set is located in a first area of a database of the terminal device.

Optionally, the terminal device monitors the PDCCH according to the indication of the network device, and correspondingly, when receiving indication information sent by the network device, the terminal device instructs the terminal device to obtain the first target SSB when receiving the PDCCH sent by the network device. Or the terminal device monitors the PDCCH according to a fixed period, and correspondingly, the terminal device obtains the first target SSB according to the fixed period, which is not limited in the embodiment of the present application.

302. And the terminal equipment acquires a 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, wherein the second target SSB is the SSB with the highest RSRP in the SSBs transmitted by the network equipment before the current time point.

The first target SSB being greater than the fifth duration indicates that the time point corresponding to the first target SSB is longer than the current time point, and the quality of the transmission channel corresponding to the first target SSB may not meet the quality condition, so the first target SSB may not be used to determine the monitoring opportunity of the PDCCH. In this case, the terminal device acquires the second target SSB.

Optionally, the fifth time period is an arbitrary time period. Optionally, the terminal device obtains a fifth time length in a simulation test mode, that is, for each time length in the target time length range, the terminal device performs a simulation test based on the system parameters of the communication system and each time length to obtain a PDCCH monitoring result corresponding to each time length of the communication system; and the terminal equipment determines the longest time length of the PDCCH successfully monitored in the target time length range as a fifth time length. Of course, the fifth duration can also be obtained by other means, for example, the terminal device sets the fifth duration based on the channel quality, the channel fading, the frequency offset variation of the channel, and the like. Optionally, the target duration range is set to an arbitrary duration range according to needs, which is not limited by the embodiment of the present application. Optionally, the system parameters of the communication system include performance parameters of the network device, performance parameters of the terminal device, channel parameters of the communication system, and the like, which are not limited by the embodiment of the present application.

In one 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 for storing the time point corresponding to the at least one SSB obtained historically and the RSRP. Correspondingly, the terminal device queries the second target SSB from the second data set in the following implementation manner: the terminal equipment selects the SSB with the highest RSRP from the second data set, and determines the SSB as a second target SSB. Optionally, the second data Set is further configured to store other information of the SSBs, for example, an index corresponding to at least one SSB obtained historically, where any index corresponding to the SSB, i.e. the identifier of the SSB, may indicate the SSB, and is used to distinguish the SSB from other SSBs in the SSB Burst Set where the SSB is located. For example, there are four SSBs in an SSB Burst Set, the first SSB has an index of "SSB0", the second SSB has an index of "SSB1", the third SSB has an index of "SSB2", and the fourth SSB has an index of "SSB3", which is not limited in this embodiment of the present application.

Optionally, the second data set is stored in the terminal device, and the terminal device continuously updates the second data set, for example, each time the terminal device obtains the RSRP of the latest SSB, the RSRP and the time point corresponding to the SSB are updated to the second data set. Optionally, the implementation manner of updating the second data set by the terminal device is: and each time the terminal equipment acquires the RSRP of the latest SSB, the terminal equipment directly stores the time point and the RSRP corresponding to the latest SSB into the second data set without deleting the original SSB information in the second data set. Optionally, the second data set is located in a second area of the database of the terminal device.

In one possible implementation manner, the terminal device monitors, based on the first target SSB, the PDCCH when a duration between a time point corresponding to the first target SSB and a current time point is not greater than a fifth duration, where the DMRS of the PDCCH has a QCL relationship with the first target SSB.

Optionally, the terminal device monitors the PDCCH based on the first target SSB, including: the terminal equipment determines a target monitoring opportunity based on the first target SSB, wherein the DMRS of the PDCCH corresponding to the target monitoring opportunity has a QCL relationship with the first target SSB. Wherein, the duration between the time point corresponding to the first target SSB and the current time point is not greater than the fifth duration, which indicates that: the time point corresponding to the first target SSB is shorter than the current time point, the quality of the sending channel corresponding to the first target SSB is most likely to still meet the quality condition at present, in this case, the PDCCH is directly monitored based on the first target SSB, the second target SSB is not required to be acquired, RSRP measurement is not required to be carried out on a plurality of SSBs in the target SSB Burst Set, and the monitoring efficiency of the PDCCH is improved.

303. And under the condition that the time length between the time point corresponding to the first target SSB and the current time point is longer than the fifth time length and the time length between the time point corresponding to the second target SSB and the current time point is longer than the sixth time length, the terminal equipment measures the RSRP of the SSBs in the target SSB Burst Set.

The second target SSB is greater than the sixth duration, which indicates that the time point corresponding to the second target SSB is longer than the current time point, and the quality of the transmission channel corresponding to the second target SSB may not meet the quality condition, so the second target SSB may not be used to determine the monitoring opportunity of the PDCCH. In this case, the terminal device measures RSRP of a plurality of SSBs in the target SSB Burst Set.

Optionally, the sixth time period is any time period. Optionally, the terminal device obtains a sixth duration in a simulation test mode, that is, for each duration in 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 a PDCCH monitoring result corresponding to each duration of the communication system; and the terminal equipment determines the longest time length of the PDCCH successfully monitored in the target time length range as a sixth time length. Of course, the sixth duration can also be obtained by other means, for example, the terminal device sets the sixth duration based on the channel quality, the channel fading, the frequency offset variation of the channel, and the like. Optionally, the target duration range is set to an arbitrary duration range as needed. Optionally, the sixth duration is the same as or different from the fifth duration, which is not limited by the embodiment of the present application. Optionally, the system parameters of the communication system include performance parameters of the network device, performance parameters of the terminal device, channel parameters of the communication system, and the like, which are not limited by the embodiment of the present application.

In one possible implementation manner, the terminal device monitors, based on the second target SSB, the PDCCH under the condition that a duration between a time point corresponding to the first target SSB and a current time point is greater than a fifth duration and a duration between a time point of the second target SSB and the current time point is not greater than a sixth duration, where the DMRS of the PDCCH has a QCL relationship with the second target SSB.

Optionally, the terminal device monitors the PDCCH based on the second target SSB, including: and the terminal equipment determines target monitoring time based on the second target SSB, wherein the DMRS of the PDCCH corresponding to the target monitoring time has a QCL relationship with the second target SSB. Wherein, 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 indicates that: the time point corresponding to the second target SSB is closer to the current time point, so that the quality of the transmission channel corresponding to the second target SSB is still better at present, in this case, the PDCCH is directly monitored based on the second target SSB, RSRP measurement on multiple SSBs in the target SSB Burst Set is not needed, and the monitoring efficiency of the PDCCH is improved.

304. The terminal device determines a target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs.

In one possible implementation, the terminal device determines, based on RSRP of the plurality of SSBs, a target SSB from the plurality of SSBs, including: the terminal equipment selects SSB with highest RSRP from the SSBs; the SSB with the highest RSRP is determined as the target SSB. In the embodiment of the application, as the quality of the transmission channel of the SSB with the strongest RSRP is better in a plurality of SSBs in the SSB Burst Set, the PDCCH corresponding to the DMRS with the QCL relation with the SSB is monitored, so that the terminal equipment can be ensured to monitor the PDCCH transmitted on the channel with good quality, and the receiving accuracy of the PDCCH is improved.

Optionally, the terminal device determines the target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs, including: the terminal device selects any SSB with RSRP larger than the reference RSRP from the SSBs, and determines the SSB as a target SSB. Wherein the RSRP of the SSB is greater than the reference RSRP, which indicates that the quality of the transmission channel of the SSB satisfies the quality condition. In the embodiment of the application, because the RSRP of the selected target SSB is larger than the reference RSRP, the quality of the transmission channel of the target SSB is better, so that the PDCCH corresponding to the DMRS with the QCL relation with the SSB is monitored, the terminal equipment can be ensured to monitor the PDCCH transmitted on the channel with good quality, and the receiving accuracy of the PDCCH is improved. Of course, the terminal device can also determine the target SSB in other manners, which the embodiment of the present application does not limit.

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

In one possible implementation, the terminal device monitors PDCCH based on target SSB, including: the terminal equipment determines target monitoring time based on the index of the target SSB, and monitors the PDCCH at the target monitoring time, wherein the DMRS of the PDCCH corresponding to the target monitoring time has a QCL relationship with the target SSB.

In the embodiment of the application, as the quality of the sending channel of the target SSB is better, and the PDCCH is monitored by taking the monitoring time corresponding to the target SSB as the target monitoring time, the terminal equipment can be ensured to monitor the PDCCH sent on the channel with good quality, and the receiving accuracy of the PDCCH is improved.

Optionally, the terminal device determines, based on the target SSB, the implementation manner of the target monitoring opportunity to be: the terminal equipment determines a target monitoring time corresponding to the index of the target SSB based on the index of the target SSB and the mapping relation between the index of the SSB and the monitoring time of the PDCCH. Optionally, a mapping relationship between the index of the SSB and the monitoring opportunity of the PDCCH is stored in the terminal device, a monitoring opportunity corresponding to the index of any SSB can be obtained based on the mapping relationship, and the DMRS of the PDCCH corresponding to the monitoring opportunity has a QCL relationship with the SSB.

Fig. 4 is a schematic diagram of association between SSB and monitoring timing (Monitoring Occasion, MO) of PDCCH. Referring to fig. 4, fig. 4 shows transmission periods of two SSB Burst sets, each of which includes 4 SSBs, and beam directions for transmitting the 4 SSBs are different. The SSB in any SSB Burst Set has an associated PDCCH monitoring occasion, and the DMRS of the PDCCH corresponding to the SSB associated monitoring occasion has a QCL relationship with the SSB.

It should be noted that, in the foregoing embodiment, the first target SSB is acquired first, the second target SSB is acquired when the first target SSB is not available, the scheme of measuring RSRP of multiple SSBs in the target SSB Burst Set when the second target SSB is not available is merely an exemplary illustration, in other embodiments, the second target SSB is acquired first, the first target SSB is acquired when the second target SSB is not available, and the RSRP of multiple SSBs in the target SSB Burst Set is measured when the first target SSB is not available. Alternatively, the first target SSB is acquired, and RSRP of multiple SSBs in the target SSB Burst Set is directly measured in a case where the first target SSB is not available. Or, the second target SSB is acquired, and in the case where the second target SSB is not available, RSRP of multiple SSBs in the target SSB Burst Set is directly measured, which is not limited by the embodiment of the present application.

Various update scenarios for the database are provided below:

the first type, the terminal equipment updates the index and the time point corresponding to the SSB to the first data set when receiving the SSB sent by the network equipment and the target PDCCH exists. The DMRS of the target PDCCH has a QCL relationship with the SSB. The time point corresponding to the SSB is the receiving time point of the SSB. Optionally, the receiving time point of the SSB is a Slot number of the receiving SSB.

Optionally, in the process of cell search or system message updating of a cell, when receiving an SSB carrying MIB (Master Information Block, main system information block) sent by a network device, the terminal device indicates that SIB1 CORESET (control resource set) exists in SIB1 (System Information Block, residual minimum system information) configuration information carried in the MIB, and the terminal device determines that a target PDCCH exists.

In the embodiment of the application, the terminal equipment can successfully receive the SSB and the SSB also has the corresponding target PDCCH, which not only indicates that the quality of the transmission channel of the SSB meets the quality condition, but also indicates that the SSB has the corresponding PDCCH monitoring time, in this case, the index and the time point of the SSB are updated to the first data set, and then the SSB can be directly inquired from the first data set, so that the monitoring time of the PDCCH is determined based on the SSB.

And secondly, under the condition that the random access is successful, the terminal equipment updates the index and the time point corresponding to the SSB used by the random access to the first data set. The time point corresponding to the SSB is the time point of initiating random access. Optionally, the time point of initiating the random access is a Slot number of initiating the random access. Or under the condition that the random access fails, the terminal equipment updates the index and the time point corresponding to the SSB acquired in the random access process 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. Optionally, the receiving time point of the SSB is a Slot number of the receiving SSB.

In the random access process, the terminal equipment receives at least one SSB, determines the SSB of which the corresponding transmission channel quality meets the quality condition from the at least one SSB, and determines the transmission timing and the transmission power of a Preamble (Preamble) of the random access based on the reception timing and the reception power of the SSB, wherein the SSB is the SSB used in the random access.

In the process of selecting the SSB with the corresponding transmission channel quality meeting the quality condition from the at least one SSB, the terminal device measures the RSRP of the at least one SSB, and selects the SSB with the corresponding transmission channel quality meeting the quality condition with the RSRP of the at least one SSB as a reference, so that in the random access process, the terminal device obtains the RSRP of the at least one SSB, and in the case of random access failure, the terminal device updates the index and the time point corresponding to the at least one SSB and the RSRP to the second data set.

In the embodiment of the application, the random access successfully indicates that the quality of the transmission channel corresponding to the SSB used by the random access meets the quality condition, in this case, the index and the 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 that the monitoring time of the PDCCH is determined based on the SSB. And under the condition of random access failure, updating the RSRP of at least one SSB acquired in the random access process, and the corresponding index and time point to a second data set, and then the subsequent terminal equipment can directly inquire the SSB with the highest RSRP from the second data set and determine the monitoring time of the PDCCH based on the SSB.

Thirdly, under the condition that the terminal equipment receives relation indication information sent by the network equipment and the relation indication information indicates the QCL relation between the DMRS of the PDCCH and the SSB, updating an index and a time point corresponding to the SSB to a first data set; and updating the index and 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. Optionally, the receiving time point of the SSB is a Slot number for receiving the SSB. Optionally, the relation indication information is PDCCH TCI state (Transmission Configuration Index, transmission configuration index state).

The terminal device receives the relation instruction information sent by the network device in the connection state, and performs channel estimation based on a reference signal in the relation instruction information, namely, SSB having a QCL relation with the DMRS of the PDCCH. In the process of channel estimation, the terminal device may measure the RSRP of the SSB, in this case, the terminal device updates the RSRP of the SSB, and the corresponding index and time point to the second data set, so that the subsequent terminal device can conveniently query the SSB with the highest RSRP from the second data set, and determine the monitoring opportunity of the PDCCH based on the SSB with the highest RSRP. In addition, since the SSB is a reference signal indicated by the relationship indication information, the network device indicates that the quality of the transmission channel corresponding to the SSB satisfies the quality condition, in this case, the index and the 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 that the monitoring timing of the PDCCH is determined based on the SSB.

Under the condition that the terminal equipment receives relation indication information sent by the network equipment and the relation indication information indicates the QCL relation between the DMRS of the PDCCH and a CSI-RS (Channel State Information-Reference Signal, channel state information Reference Signal), updating an index and a time point corresponding to the SSB with the QCL relation to a first data set; and updating the index and 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. Optionally, the receive time point of the SSB receives the Slot number of the SSB.

And the terminal equipment receives the relation indication information sent by the network equipment in a connection state, and performs channel estimation based on a reference signal in the relation indication information, namely the CSI-RS with a QCL relation with the DMRS of the PDCCH. In the course of channel estimation, the terminal device may measure the RSRP of the CSI-RS. Accordingly, the terminal device can determine the RSRP of the SSB having the QCL relationship with the CSI-RS based on the RSRP of the CSI-RS. That is, the terminal device acquires the RSRP of the historical CSI-RS and the RSRP of the historical SSB having the QCL relationship with the historical CSI-RS; determining a target value, wherein the target value is a difference value between RSRP of the historical CSI-RS and RSRP of the historical SSB; the terminal device determines the difference between the RSRP of the CSI-RS and the target value as the RSRP of the SSB. The historical CSI-RS refers to the CSI-RS sent by the network equipment before the current time point, and the historical SSB refers to the SSB sent by the network equipment before the current time point. Optionally, a duration between a measurement time point of the historical CSI-RS and a measurement time point of the historical SSB is within a target duration range.

In the embodiment of the application, the terminal equipment directly uses the RSRP of the CSI-RS to determine the RSRP of the SSB with the QCL relation with the CSI-RS, so that the RSRP of the SSB can be obtained without measurement, and the power consumption of the terminal equipment can be saved.

In the embodiment of the present application, since the CSI-RS is a reference signal indicated by the relationship indication information by the network device, it is indicated that the quality of the transmission channel corresponding to the CSI-RS satisfies the quality condition, and correspondingly, the quality of the transmission channel corresponding to the SSB having the QCL relationship with the CSI-RS also satisfies the quality condition. In addition, the terminal equipment acquires the RSRP of the SSB, updates the RSRP of the SSB, the corresponding index and the corresponding time point to the second data set, and is convenient for the subsequent terminal equipment to inquire the SSB with the highest RSRP from the second data set, and determines the monitoring time based on the SSB with the highest RSRP.

Fourth, after the terminal device measures RSRP of the SSBs in the target SSB Burst Set, the indices and time points corresponding to the SSBs respectively, and the RSRP of the SSBs are updated to the second data Set. The time point corresponding to the SSB is the time point for measuring the RSRP of the SSB. Optionally, the Slot number of the RSRP of the SSB is measured at the point in time of measuring the RSRP of the SSB.

In the embodiment of the application, after the terminal equipment measures the RSRP of the plurality of SSBs, the corresponding indexes and the time points are updated to the second data set, so that the subsequent terminal equipment can conveniently inquire the SSB with the highest RSRP from the second data set, and the monitoring time is determined based on the SSB with the highest RSRP.

Fifthly, under the condition that the terminal equipment successfully receives the PDCCH based on the target monitoring time, determining SSB (service level control) with a QCL (QCL relation) with the DMRS of the PDCCH; and updating the index and the time point corresponding to the SSB to the first data set. The time point corresponding to the SSB is the time point of receiving the PDCCH. Optionally, the time point of receiving the PDCCH is a Slot number of receiving the PDCCH.

In the embodiment of the application, the terminal equipment can indicate that the PDCCH is successfully received based on the target monitoring opportunity: the channel quality of the transmission channel corresponding to the SSB used for determining the target monitoring opportunity at the time point of receiving the PDCCH still meets the quality condition, in this case, the index corresponding to the SSB and the time point are updated to the first data set, so that the SSB can be conveniently and directly queried from the first data set, and the target monitoring opportunity is determined based on the SSB.

It should be noted that, the point in time 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, which is not limited in the embodiment of the present application.

Fig. 5 is a schematic diagram of a database. Referring to fig. 5, the database includes a first region and a second region. Wherein the first area stores an index of the SSB and a corresponding point in time at which the corresponding transmission channel quality satisfies the quality condition. The second area stores indexes of the plurality of SSBs, RSRP, and corresponding points in time.

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

The embodiment of the application provides various scenes for updating the first data set and the second data set, so that indexes and time points of the latest corresponding SSB with the transmission channel quality meeting the quality condition and the latest obtained RSRP of the SSB are updated into the data set, and therefore, the terminal equipment can monitor the PDCCH based on the SSB with the transmission channel quality meeting the quality condition which corresponds to the history or the SSB with the highest RSRP in the SSB which is transmitted in the history. It should be noted that the above-mentioned various scenarios for updating the data set are merely exemplary, and the data set can be updated in other scenarios, which are not limited in this embodiment of the present application.

Fig. 6 is a flowchart illustrating a PDCCH monitoring method according to an exemplary embodiment of the present application, in which a terminal device determines whether to monitor a PDCCH based on SSB, and determines a target SSB Burst Set to select the target SSB in case that it is determined that the PDCCH is to be monitored based on SSB. Referring to fig. 6, the method includes:

601. And the terminal equipment determines the earliest monitoring time in a plurality of monitoring times of the PDCCH under the condition that the target configuration condition is met.

When the terminal device satisfies the target configuration condition, the transmission channels corresponding to the SSBs in the target SSB Burst Set are different, and therefore, the quality of the transmission channels corresponding to the SSBs in the target SSB Burst Set is different. Therefore, in this case, the terminal device monitors the PDCCH based on the SSB, that is, selects the SSB with good quality of the corresponding transmission channel, determines the monitoring timing corresponding to the SSB, and monitors the PDCCH at the monitoring timing.

Optionally, the target configuration condition includes: the terminal device is in a connected state or an idle state, and the search space of the configured PDCCH is Search Space Zero (search space zero). Alternatively, the terminal device is in an idle state, and the search space of the configured PDCCH is other search spaces than Search Space Zero. The network device is configured to send the PDCCH to the terminal device at a plurality of monitoring occasions in the search space.

Optionally, the terminal device monitors the PDCCH according to the configured monitoring period when the terminal device is in a connected state and the configured search space of the PDCCH is other than Search Space Zero. Since the SSBs in the SSB Burst Set are transmitted through the beams with the same scanning directions when the terminal device is in the connected state and the search space of the configured PDCCH is other than Search Space Zero, the transmission channel qualities corresponding to the SSBs are the same, and therefore, the transmission channel qualities of the PDCCHs corresponding to the monitoring opportunities are the same, and in this case, the terminal device does not need to determine the monitoring opportunities based on the SSBs.

In one possible implementation, the determining, by the terminal device, an earliest monitoring occasion among a plurality of monitoring occasions of the PDCCH includes: the terminal device determines a first On Duration (active period) located after a current point in time in a configured DRX (Discontinuous Reception ) cycle; the earliest monitoring occasion of the plurality of monitoring occasions in the On duration is determined.

Among them, the DRX cycle consists of On Duration and Opportunity for DRX (sleep period). In On Duration, the terminal device listens to and receives the PDCCH, and in Opportunity for DRX, the terminal device does not receive the PDCCH to save power consumption. Therefore, in the case that the terminal device receives the PDCCH according to the configured DRX cycle, the first monitoring occasion in the first On Duration after the current time point is the earliest monitoring occasion among the plurality of monitoring occasions.

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

In the embodiment of the application, the terminal equipment determines the earliest monitoring time in a plurality of monitoring times in the On Duration, determines the target SSB Burst Set based On the earliest monitoring time, and then the target monitoring time determined based On the SSB in the SSB Burst Set is in the On Duration of the DRX period, so that the terminal equipment only needs to monitor the PDCCH in the On Duration, and the power consumption of the terminal can be saved.

602. The terminal equipment determines 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.

Optionally, the terminal device stores a transmission period of the SSB Burst Set and a time domain position of each SSB in the SSB Burst Set in one transmission period, and accordingly, the terminal device can determine, based on the transmission period and the time domain position of each SSB in the SSB Burst Set in one transmission period, a plurality of SSB Burst sets between a current time point and an earliest monitoring opportunity, and also can determine a transmission time point corresponding to a last SSB in each SSB Burst Set.

603. The terminal equipment selects a target SSB Burst Set from the SSB Burst sets, wherein the time length between the sending 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.

Optionally, the first duration is an arbitrary duration. Optionally, the first duration is a sum of the second duration, the third duration, and the fourth duration. Wherein the second duration is a duration consumed for RSRP measurement of the plurality of SSBs; the third duration is a duration consumed for determining the target SSB from the plurality of SSBs; the fourth duration is a duration consumed for determining a target monitoring opportunity of the PDCCH based on the target SSB.

In the embodiment of the application, the time length between the sending time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring time is not less than the first time length, so that the terminal equipment can be ensured to have enough time to perform RSRP measurement, determine the target SSB and determine the target monitoring time based on the target SSB. And 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, so that the shortest interval time length between the time point for measuring the SSB and the monitoring time of the PDCCH can be ensured, the quality change of the transmission channel corresponding to the SSB is ensured to be minimum in the interval time length, and the quality of the transmission channel corresponding to the PDCCH determined based on the target monitoring time of the SSB is ensured.

It should be noted that the above-described target configuration condition is only an exemplary one, and the target configuration condition can also be other conditions. In addition, steps 601-603 are only one implementation manner of determining the target SSB Burst Set, and the target SSB Burst Set can also be determined in other manners, which is not limited in this embodiment of the present application.

Fig. 7 is a schematic diagram of a process for determining a target SSB Burst Set. Referring to fig. 7, the earliest monitoring opportunity is MO1, and 3 SSB Burst sets are sent by the network device between the current time point (t 0) and the earliest monitoring opportunity, where, except for the first SSB Burst Set, the duration between the sending time point corresponding to the last SSB in the other two SSB Burst sets and the earliest monitoring opportunity is smaller than the first duration, and therefore, the first SSB Burst Set is the target SSB Burst Set.

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

Optionally, the terminal device measures RSRP of the SSBs in the target SSB Burst Set through an RF (Radio Frequency) module. The RF module is a module for transmitting information and receiving information in the terminal device. Alternatively, the terminal device turns on the RF module only during the process of measuring RSRP of a plurality of SSBs in the target SSB Burst Set. After measurement, the terminal device turns off the RF module to enter a power saving state, so that unnecessary power consumption can be avoided. After measuring the RSRP of the SSB, the terminal device determines which power saving state is specifically entered based On the time interval between the target SSB Burst Set and the On duration and the performance of the terminal device.

605. The terminal device determines a target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs.

606. The terminal equipment monitors the PDCCH based on the target SSB, wherein the DMRS of the PDCCH has a QCL relation 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 in detail here.

Optionally, after receiving the PDCCH, the terminal device processes the PDCCH. For example, the PDCCH is demodulated to obtain DCI information in the PDCCH. Optionally, the terminal device processes the PDCCH through the baseband module. The baseband module is a module for processing information in the terminal equipment.

Fig. 8 is a schematic diagram of the operating states of the RF module and the baseband module in the terminal device. Referring to fig. 8, the Duration between the transmission time point of the last SSB in the target SSB Burst Set and the earliest monitoring occasion in the On Duration is not less than the first Duration. The radio frequency module is in a working state in a time period of measuring the target SSB Burst Set and a time period of receiving the PDCCH, and is in a closing state in other time periods. The baseband module is in a working state in a time period of selecting the SSB with the highest RSRP, a time period of determining the target monitoring time based on the SSB with the highest RSRP and a time period of processing the received PDCCH, and other time periods are in a closing state, so that the power consumption of the terminal equipment can be saved.

Fig. 9 is a schematic diagram of a process of determining a target monitoring opportunity. Referring to fig. 9, 5 scenarios of updating a database are shown on the left side, the first scenario being that SSB is received and a target PDCCH is present during cell search or system message update of a cell. 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 RSRP of multiple SSBs in the target SSB Burst Set. A fifth scenario is to successfully receive the PDCCH on a target-based monitoring occasion. The specific way of updating the database in these 5 scenarios is described in detail in the corresponding embodiment of fig. 3, and will not be described here again.

With continued reference to fig. 9, in a case where the terminal device satisfies the target configuration condition, the process of determining the target monitoring opportunity includes: the first target SSB is queried, i.e., requested from the database, and returned from the database. In the case that the first target SSB is available (the duration between the point in time corresponding to the first target SSB and the current point in time is not greater than the fifth duration), the target monitoring opportunity is determined directly based on the first target SSB. In case the first target SSB is not available (the duration between the time point corresponding to the first target SSB and the current time point is longer than the fifth duration), the terminal device queries the second target SSB, that is, requests the second target SSB from the database, and receives the second target SSB returned from the database. And under the condition that the second target SSB is available (the duration between the time point corresponding to the second target SSB and the current time point is not longer than the sixth duration), determining the target monitoring opportunity directly based on the second target SSB, under the condition that the second target SSB is unavailable (the duration between the time point corresponding to the second target SSB and the current time point is longer than the sixth duration), initiating RSRP measurement, namely measuring RSRP of a plurality of SSBs in the target SSB Burst Set, wherein the RSRP of the plurality of SSBs is updated into a database, then querying the second target SSB with the highest RSRP from the database again by the terminal equipment, and under the condition that the second target SSB is available, determining the target monitoring opportunity based on the second target SSB.

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

Referring to fig. 10, a block diagram illustrating a structure of a PDCCH monitoring apparatus according to an exemplary embodiment of the present application is shown. The PDCCH monitoring device is applied to terminal equipment, and comprises:

an RSRP measurement module 1001, configured to measure reference signal received powers RSRP of a plurality of synchronization signal blocks SSB in a target synchronization signal Burst Set SSB Burst Set;

A target SSB determination module 1002 configured to determine a target SSB from the plurality of SSBs based on RSRP of the plurality of SSBs;

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

In a possible implementation manner, the PDCCH monitoring module 1003 is specifically configured to determine a target monitoring opportunity based on an index of the target SSB, where a 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.

In one possible implementation, the target SSB determination module 1002 is specifically configured to select an SSB with the highest RSRP from the plurality of SSBs; the SSB with the highest RSRP is determined as the target SSB.

In one possible implementation manner, a duration between a transmission time point corresponding to a last SSB in the target SSB Burst Set and an earliest monitoring occasion in the plurality of monitoring occasions of the PDCCH is not less than the first duration;

the first time length is the sum of the second time length, the third time length and the fourth time length;

the second time period is the time period consumed by performing RSRP measurement on the plurality of SSBs;

the third duration is a duration consumed for determining the target SSB from the plurality of SSBs;

The fourth duration is a duration consumed for determining a target monitoring opportunity of the PDCCH based on the target SSB.

In one possible implementation, the apparatus further includes:

the first determining module is used for determining the earliest monitoring time in a plurality of monitoring times 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 determining a transmission time point corresponding to the last SSB in each SSB Burst Set;

the target SSB determining module 1002 is further configured to select a target SSB Burst Set from the plurality of SSB Burst sets, where a duration between a transmission time point corresponding to a last SSB in the target SSB Burst Set and an earliest monitoring opportunity is shortest and not less than the first duration.

In one possible implementation manner, a first determining module is configured to determine a first active period On Duration located after the current time point in the configured DRX cycle; the earliest monitoring occasion of the plurality of monitoring occasions in the On duration is determined.

In one possible implementation manner, the RSRP measurement module 1001 is specifically configured to measure RSRP of a plurality of SSBs in the target SSB Burst Set when a duration between a time point corresponding to the first target SSB and the current time point is greater than a fifth duration; the first target SSB is sent by the network equipment before the current time point, and the quality of a sending channel corresponding to the first target SSB meets the quality condition.

In one possible implementation manner, the RSRP measurement module 1001 is specifically configured to measure RSRP of the SSBs in the first SSB Burst Set when a duration between a time point corresponding to the first target SSB and a current time point is greater than a fifth duration and a duration between a time point corresponding to the second target SSB and the current time point is greater 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.

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

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

the apparatus further comprises:

and the time point query module is used for querying a time point corresponding to the first target SSB from the first data set and querying a time point corresponding to the second target SSB from the second data set.

In one possible implementation, the apparatus further includes:

the storage module is used for updating the time point corresponding to the SSB to the first data set under the condition that the SSB sent by the network equipment is received and the target PDCCH exists; the DMRS of the target PDCCH has a QCL relationship with the SSB, and the time point corresponding to the SSB is the receiving time point of the SSB.

In one possible implementation manner, the storage module is further configured to update, when the random access is successful, a time point corresponding to an SSB used by the random access to the first data set, where the time point corresponding to the SSB is a time point for initiating the random access; or under the condition of random access failure, updating the time point corresponding to the SSB obtained 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.

In one possible implementation manner, the storage module is further configured to update a time point corresponding to the SSB to the first data set when the relationship indication information sent by the network device is received and the relationship indication information indicates a QCL relationship between the DMRS of the PDCCH and the SSB; 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.

In one possible implementation manner, the storage module is further configured to update, when the relationship indication information sent by the network device is received and the relationship indication information indicates a QCL relationship between the DMRS of the PDCCH and the channel state information reference signal CSI-RS, a time point corresponding to the SSB having the QCL relationship with the CSI-RS to the first data set; 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.

In one possible implementation, the storage module is further configured to obtain an RSRP of the historical CSI-RS and an RSRP of the historical SSB having a QCL relationship with the historical CSI-RS; determining a target value, wherein the target value is a difference value between RSRP of the historical CSI-RS and 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 one possible implementation, the storage module is further configured to update the time points corresponding to the SSBs respectively, and the RSRP of the SSBs to the second data set, where the time points corresponding to the SSBs are time points for measuring the RSRP of the SSBs.

In one possible implementation, the storage module is further configured to determine, in case of successful reception of the PDCCH, an SSB having a QCL relationship 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.

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

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

In one possible implementation, the network device is configured to send PDCCH to the terminal device at a plurality of monitoring occasions;

the RSRP measurement module 1001 is configured to measure RSRP of a plurality of SSBs in the target SSB Burst Set when the terminal device meets the target configuration condition, where transmission channels corresponding to the plurality of SSBs in the target SSB Burst Set are different when the terminal device meets the target configuration condition.

It should be noted that, in the apparatus provided in the foregoing embodiment, when implementing the functions thereof, only the division of the foregoing functional modules is used as an example, in practical application, the foregoing functional allocation may be implemented by different functional modules, that is, the internal structure of the terminal device is divided into different functional modules, so as to implement all or part of the functions described above. In addition, the apparatus and the method embodiments provided in the foregoing embodiments belong to the same concept, and specific implementation processes of the apparatus and the method embodiments are detailed in the method embodiments and are not repeated herein.

Fig. 11 shows a schematic structural diagram of a communication device according to an exemplary embodiment of the present application, including: 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, and the processor 1101 executes various functional applications and information processing by running software programs and modules.

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

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

The memory 1104 may be used for storing at least one program code and the processor 1101 is used for executing the at least one program code to implement the steps of the above-described method embodiments.

Furthermore, the communication device may be a terminal device or a network device. The memory 1104 may be implemented by any type of volatile or nonvolatile memory device, including but not limited to: magnetic or optical disk, 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 ), ROM (Read Only Memory), magnetic Memory, flash Memory, programmable Read-Only Memory (Programmable Read Only Memory, PROM).

The present application also provides a computer-readable storage medium storing at least one program code loaded and executed by the processor to implement the PDCCH monitoring method as illustrated in the various embodiments above.

The present application also provides a computer program product storing at least one program code loaded and executed by the processor to implement the PDCCH monitoring method as shown in the various embodiments above.

According to another aspect of the embodiments of the present application, there is provided a chip including programmable logic circuits and/or program instructions for implementing the PDCCH monitoring method of the above aspect when the chip is run on a terminal device.

The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

It will be appreciated by those skilled in the art that all or part of the steps in the PDCCH monitoring method implementing the above embodiment may be implemented by hardware, or may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and the above storage medium may be a read only memory, a magnetic disk or an optical disk, etc.

The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but rather, the application is to be construed as limited to the appended claims.

Claims

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;

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 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;

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.