CN113677028A

CN113677028A - PDCCH monitoring method, device, equipment and storage medium

Info

Publication number: CN113677028A
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: 2021-11-19
Anticipated expiration: 2041-08-20
Also published as: CN113677028B

Abstract

The application discloses a PDCCH monitoring method, a device, equipment and a storage medium, and belongs to the technical field of communication. The method comprises the following steps: measuring RSRP of a plurality of SSBs in a target SSB Burst Set; determining a target SSB from the plurality of SSBs based on the RSRP of the plurality of SSBs; monitoring the PDCCH based on a target SSB, wherein the DMRS of the PDCCH has a quasi-co-located QCL relationship with the target SSB. Since the target SSB is selected based on RSRP, the quality of the transmission channel of the target SSB is 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.

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 method, a device, equipment and a storage medium for monitoring a PDCCH (physical Downlink control channel).

Background

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

The network device configures a plurality of monitoring occasions for the terminal device, and respectively transmits the PDCCH to the terminal at the plurality of monitoring occasions, wherein the quality of a transmission channel of the PDCCH is different at different monitoring occasions. Terminal equipment expects to monitor the PDCCH transmitted on a channel with good quality, and therefore, how to monitor the PDCCH becomes a hot spot of research.

Disclosure of Invention

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

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

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 the RSRP of the plurality of SSBs;

monitoring a Physical Downlink Control Channel (PDCCH) based on the target SSB, wherein a demodulation reference signal (DMRS) of the PDCCH has a quasi-co-location QCL relationship with the target SSB.

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

the RSRP measuring module is used for measuring Reference Signal Received Power (RSRP) of a plurality of Synchronous Signal Blocks (SSB) in a 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 the 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 has a quasi-co-location QCL relationship with the target SSB.

According to another aspect of embodiments 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 according to the above aspect.

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 according to 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, which is loaded and executed by a processor to implement the PDCCH monitoring method according to the above aspect.

According to another aspect of the embodiments of the present application, there is provided a chip, which includes a programmable logic circuit and/or program instructions, and when the chip runs on a terminal device, the chip is configured to implement the PDCCH monitoring method according to the above aspect.

In the scheme provided by the embodiment of the application, considering that the DMRS of the PDCCH corresponding to each monitoring occasion has a QCL relationship with the SSB in one SSB Burst Set, and the channel condition of the transmission channel of the SSB having the QCL relationship with the DMRS of the PDCCH is similar to the channel condition of the transmission channel of the PDCCH, the PDCCH is monitored by using the SSB. Because the target SSB is selected from the SSBs based on the RSRP of the SSBs, the quality of a transmission channel of the target SSB is relatively good, and therefore, the PDCCH corresponding to the DMRS having the QCL relationship with the target SSB is monitored, the PDCCH transmitted on the channel with good quality can be monitored by the terminal equipment, and the receiving accuracy of the PDCCH is improved.

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 are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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 illustrating an association relationship between an SSB and a monitoring occasion of a 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 diagram illustrating a process for determining a target SSB Burst Set according to an exemplary embodiment of the present application;

fig. 8 is a schematic diagram illustrating 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 illustrating 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 shows a block diagram of a terminal device according to an exemplary embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The terms "first," "second," "third," "fourth," and the like as used herein may be used herein to describe various concepts, 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.

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

Terminal Equipment 101 includes a UE (User Equipment), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, wireless communication device, User agent, 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) station, a PDA (Personal digital processing), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in 5GS (5th Generation System, fifth Generation mobile communication System) or a terminal device in PLMN (Pub1ic Land mobile 1e Network, public Land mobile communication Network) evolved in the future, and the like, which is not limited by the embodiment of the present application. Alternatively, 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.

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 an EUTRAN (Evolved Universal Radio Access Network) or one or more enodebs (Evolved Node B, the name of a base station in the LTE system) in the EUTRAN; in a 5G NR (New Radio, New air interface) system, a Network device 102 is a RAN (Radio Access Network) or one or more gnbs (names of base stations in the 5G NR system) in the RAN.

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 those skilled in the art can understand the meaning thereof. The technical solution described in the embodiment of the present 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 present application does not limit this.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it can be known by a person skilled in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

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

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

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

The network device periodically sends the SSB Burst Set to the terminal device, and in each period, sequentially sends a plurality of SSBs in the SSB Burst Set according to the order of the plurality of SSBs in the SSB Burst Set. In one possible implementation manner, a time duration between a transmission time point corresponding to a last SSB in the target SSB Burst Set and an earliest monitoring opportunity in the plurality of monitoring opportunities of the PDCCH is not less than the first time 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. The second time length is the time length consumed for performing RSRP measurement on the plurality of SSBs; the third time length is the time length consumed by selecting the SSB with the highest RSRP from the plurality of SSBs; the fourth duration is the duration consumed to determine the target monitoring opportunity based on the SSB with the highest RSRP.

The RSRP (Reference Signal Receiving Power) may reflect the Signal strength of the corresponding SSB, and may further reflect the channel quality of the SSB. The RSRP strength of the SSB is in a positive correlation 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 is.

In the embodiment of the present application, since the time duration 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 duration, the terminal device has enough time to perform RSRP measurement, select the SSB with the highest RSRP, and determine the target monitoring opportunity based on the SSB with the highest RSRP.

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

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

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

Here, DMRS (demodulation Reference Signal) of the PDCCH is used to demodulate the PDCCH. The DMRS of the PDCCH and the SSB have a QCL (Quasi Co-Location) relationship, which indicates that the PDCCH and the SSB have the same or similar transmission channel conditions.

Optionally, the PDCCH in this embodiment is a Paging PDCCH or a SIB (System Information Block) PDCCH, and the Paging PDCCH refers to that the PDSCH indicated by the 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 which a terminal device first acquires a historical SSB with good transmission channel quality, and 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 device obtains a first target SSB, the first target SSB is sent by the network device before the current time point, and the quality of a sending channel corresponding to the first target SSB meets the quality condition.

Wherein, the quality of the transmission channel corresponding to the first target SSB meeting the quality condition indicates that the quality of the channel transmitting the first target SSB is good. For example, the quality condition satisfied by the transmission channel quality may include, but is not limited to, that information transmitted by the network device can be accurately received at the channel quality, or that RSRP of the received information is greater than a reference threshold at the channel quality, and the like.

In one 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 for storing the time point of sending the SSB with the channel quality meeting the quality condition in history. Optionally, the first data Set is further used to store other information of the SSB, for example, an index of the SSB whose historically corresponding transmission channel quality satisfies the quality condition, where the index, i.e. the identification 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 index of the first SSB is "SSB 0", the index of the second SSB is "SSB 1", the index of the third SSB is "SSB 2", and the index of the fourth SSB is "SSB 3", which is not limited in this embodiment.

Optionally, the first data set is stored in the terminal device, and the terminal device may continuously update the first data set, for example, each time the terminal device acquires the latest SSB whose corresponding transmission channel quality meets the quality condition, the SSB is updated to the first data set. The implementation mode of updating the first data set by the terminal device includes: after acquiring the latest corresponding SSB with the quality of the transmission channel satisfying the quality condition, the terminal device deletes the information of the original SSB satisfying the condition in the first data set, and stores the time point corresponding to the latest SSB satisfying the condition in the first data set, or directly stores the time point corresponding to the latest SSB satisfying the condition in the first data set without deleting the information of the original SSB in the first data set. Optionally, the first set of data is located in a first area of a database of the terminal device.

Optionally, the terminal device monitors the PDCCH according to an instruction of the network device, and correspondingly, the terminal device obtains the first target SSB when receiving instruction information sent by the network device, where the instruction information instructs the terminal device to receive 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 this embodiment of the present application.

302. And the terminal equipment acquires a second target SSB under the condition that the time length between the time point corresponding to the first target SSB and the current time point is greater than the fifth time length, wherein the second target SSB is the SSB with the highest RSRP in the SSBs sent by the network equipment before the current time point.

The first target SSB being longer than the fifth duration indicates that the time point corresponding to the first target SSB is farther from the current time point, and the quality of the transmission channel corresponding to the first target SSB may not meet the quality condition, so that the first target SSB may not be used to determine the monitoring timing 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 the fifth duration in a simulation test manner, 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 a PDCCH monitoring result corresponding to each duration of the communication system; and the terminal equipment determines the longest time length for successfully monitoring the PDCCH within the target time length range as a fifth time length. Of course, the fifth time duration can also be obtained by other manners, for example, the terminal device sets the fifth time duration based on the channel quality, the channel fading, the frequency offset change of the channel, and the like. Optionally, the target duration range is set as an arbitrary duration range as needed, and this is not limited in this embodiment of the application. Optionally, the system parameter of the communication system includes a performance parameter of the network device, a performance parameter of the terminal device, a channel parameter of the communication system, and the like, which is not limited in this embodiment 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 correspondingly, 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 the at least one SSB acquired historically. Correspondingly, the implementation manner of the terminal device querying the second target SSB from the second data set is as follows: and 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 used for storing other information of the SSBs, for example, indexes corresponding to at least one SSB acquired in history, and an index corresponding to any SSB, that is, an identifier of the SSB, may indicate the SSB, and is used for distinguishing 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 index of the first SSB is "SSB 0", the index of the second SSB is "SSB 1", the index of the third SSB is "SSB 2", and the index of the fourth SSB is "SSB 3", which is not limited in this embodiment.

Optionally, the second data set is stored in the terminal device, and the terminal device may continuously update the second data set, for example, each time the terminal device acquires the latest RSRP of the SSB, the RSRP corresponding to the SSB and the time point are updated to the second data set. Optionally, the implementation manner of updating the second data set by the terminal device is as follows: and 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 when acquiring the latest SSB RSRP. Optionally, the second data set is located in a second area of the database of the terminal device.

In a possible implementation manner, the terminal device monitors the PDCCH based on the first target SSB when 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 a DMRS of the PDCCH has a QCL relationship with the first target SSB.

Optionally, the monitoring, by the terminal device, the PDCCH based on the first target SSB includes: the terminal device 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 means: the time point corresponding to the first target SSB is closer to the current time point in duration, and the quality of the transmission channel corresponding to the first target SSB is most likely to meet the quality condition at the current time.

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

Optionally, the sixth time period is an arbitrary time period. Optionally, the terminal device obtains the sixth duration in a simulation test manner, 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 for successfully monitoring the PDCCH within the target time length range as a sixth time length. Of course, the sixth time duration can also be obtained by other manners, for example, the terminal device sets the sixth time duration based on the channel quality, the channel fading, the frequency offset change of the channel, and the like. Alternatively, the target duration range is set as an arbitrary duration range as needed. Optionally, the sixth time period is the same as or different from the fifth time period, which is not limited in this embodiment of the application. Optionally, the system parameter of the communication system includes a performance parameter of the network device, a performance parameter of the terminal device, a channel parameter of the communication system, and the like, which is not limited in this embodiment of the present application.

In a possible implementation manner, the terminal device monitors 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 greater than a fifth duration, and the duration between the 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 and the second target SSB have a QCL relationship.

Optionally, the terminal device monitors the PDCCH based on the second target SSB, including: and the terminal equipment determines a target monitoring opportunity based on the second target SSB, wherein the DMRS of the PDCCH corresponding to the target monitoring opportunity 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 represents that: the time point corresponding to the second target SSB is closer to the current time point in duration, so that the quality of the transmission channel corresponding to the second target SSB is still better at the current time.

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

In a possible implementation manner, the determining, by the terminal device, a target SSB from the multiple SSBs based on RSRP of the multiple SSBs includes: the terminal equipment selects the SSB with the highest RSRP from the plurality of SSBs; and determining the SSB with the highest RSRP as the target SSB. In the embodiment of the present application, since the quality of the transmission channel of the SSB with the strongest RSRP is better among the SSBs in the SSB Burst Set, monitoring the PDCCH corresponding to the DMRS having the QCL relationship with the SSB can ensure that the terminal device monitors the PDCCH transmitted on the channel with good quality, and improve the accuracy of receiving the PDCCH.

Optionally, the determining, by the terminal device, a target SSB from the multiple SSBs based on RSRP of the multiple SSBs includes: the terminal equipment selects any SSB with the RSRP larger than the reference RSRP from the plurality of 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 transmission channel quality of the SSB satisfies the quality condition. In the embodiment of the application, since the RSRP of the selected target SSB is greater than the reference RSRP, the quality of the transmission channel of the target SSB is relatively good, and therefore, monitoring the PDCCH corresponding to the DMRS having the QCL relationship with the 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. Of course, the terminal device can also determine the target SSB in other ways, which is not limited in this embodiment of the application.

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

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

In the embodiment of the present application, since the quality of the transmission channel of the target SSB is relatively good, and the PDCCH is monitored by using the monitoring occasion corresponding to the target SSB as the target monitoring occasion, it can be ensured that the terminal device monitors 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 monitoring opportunity based on the target SSB in an implementation manner that: the terminal device determines a target monitoring opportunity 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 opportunity of the PDCCH. Optionally, a mapping relationship between the index of the SSB and the monitoring occasion of the PDCCH is stored in the terminal device, the monitoring occasion 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 occasion has a QCL relationship with the SSB.

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

It should be noted that the above-mentioned scheme of acquiring the first target SSB first, acquiring the second target SSB if the first target SSB is unavailable, and measuring RSRPs of the SSBs in the target SSB Burst Set if the second target SSB is unavailable is merely an exemplary illustration, and in other embodiments, acquiring the second target SSB first, acquiring the first target SSB if the second target SSB is unavailable, and measuring RSRPs of the SSBs in the target SSB Burst Set if the first target SSB is unavailable. Or acquiring a first target SSB, and directly measuring the RSRP of a plurality of SSBs in the target SSB Burst Set under the condition that the first target SSB is unavailable. Or, acquiring a second target SSB, and directly measuring RSRPs of multiple SSBs in the target SSB Burst Set when the second target SSB is unavailable, which is not limited in the embodiment of the present application.

The following provides a variety of update scenarios for the database:

in the first method, when receiving an SSB sent by a network device and a target PDCCH exists, a terminal device updates an index and a time point corresponding to the SSB to a first data set. Wherein the DMRS of the target PDCCH has a QCL relationship with the SSB. Wherein, the time point corresponding to the SSB is the receiving time point of the SSB. Alternatively, the reception time point of the SSB is a Slot number of the reception SSB.

Optionally, in a cell search or a System message update process of a cell, the terminal device receives an SSB that carries an MIB (Master Information Block) and is sent by the network device, and SIB1(System Information Block1, remaining minimum System Information) configuration Information carried in the MIB indicates that an SIB1 CORESET (control resource set) exists, and the terminal device determines that the target PDCCH exists.

In this embodiment of the present application, a terminal device can successfully receive an SSB, and the SSB further has a corresponding target PDCCH, which not only indicates that the quality of a transmission channel of the SSB satisfies a quality condition, but also indicates that the SSB has a corresponding PDCCH monitoring opportunity, in this case, an index and a time point of the SSB are updated to a 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.

Secondly, the terminal device updates the index and the time point corresponding to the SSB used by the random access to the first data set under the condition that the random access is successful. Wherein, the time point corresponding to the SSB is the time point for initiating the random access. Optionally, the time point for initiating the random access is a Slot number for initiating the random access. Or, the terminal device 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 under the condition that the random access fails. Wherein, 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 device receives at least one SSB, determines an SSB whose corresponding transmission channel quality satisfies a 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, where the SSB is the SSB used by the random access.

The terminal device measures RSRP of the at least one SSB during a process of selecting an SSB whose corresponding sending channel quality satisfies a quality condition from the at least one SSB, and selects an SSB whose corresponding sending channel quality satisfies the quality condition with the RSRP of the at least one SSB as a reference.

In the embodiment of the present application, successful random access indicates that the quality of a transmission channel corresponding to an SSB used in random access satisfies a quality condition, and 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 occasion 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, the corresponding index and the time point to a second data set, and the subsequent terminal equipment can directly inquire the SSB with the highest RSRP from the second data set and determine the monitoring opportunity of the PDCCH based on the SSB.

Thirdly, the terminal equipment updates the index and the time point corresponding to the SSB to the first data set when the relation indication information sent by the network equipment is received and the relation indication information indicates the QCL relation between the DMRS of the PDCCH and the SSB; and updating the index and the time point corresponding to the SSB and the RSRP of the SSB to a second data set. Wherein, 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 SSB. Optionally, the relation indication information is PDCCH TCI state (Transmission Configuration Index, Transmission Configuration Index state).

The terminal device receives the relationship indication information sent by the network device in the connected state, and performs channel estimation based on a reference signal in the relationship indication information, that is, an SSB having a QCL relationship with a DMRS of a PDCCH. In the channel estimation process, the terminal device may measure the RSRP of the SSB, and in this case, the terminal device updates the RSRP of the SSB, the corresponding index and the time point to the second data set, so that a subsequent terminal device can conveniently query the SSB with the highest RSRP from the second data set, and determine the monitoring occasion 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, which 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 as to determine the monitoring timing of the PDCCH based on the SSB.

The method comprises the steps that when terminal equipment receives relationship indication Information sent by network equipment and the relationship indication Information indicates a QCL (Channel State Information-Reference Signal) relationship between a DMRS (demodulation Reference Signal) and a CSI-RS (Channel State Information Reference Signal) of a PDCCH, an index and a time point corresponding to an SSB (Single State Information) having the QCL relationship with the CSI-RS are updated to a first data set; and updating the index and the time point corresponding to the SSB and the RSRP of the SSB to a second data set. Wherein, the time point corresponding to the SSB is the receiving time point of the SSB. Alternatively, the receiving time point of the SSB receives the Slot number of the SSB.

The terminal device receives the relationship indication information sent by the network device in the connection state, and performs channel estimation based on a reference signal in the relationship indication information, that is, a CSI-RS having a QCL relationship with a DMRS of a PDCCH. During the channel estimation process, 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 obtains RSRP of the historical CSI-RS and 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 the RSRP of the historical CSI-RS and the RSRP of the historical SSB; and the terminal equipment determines the difference value between the RSRP of the CSI-RS and a target value as the RSRP of the SSB. The historical CSI-RS refers to CSI-RS sent by the network equipment before the current time point, and the historical SSB refers to SSB sent by the network equipment before the current time point. Optionally, a time duration between the measurement time point of the historical CSI-RS and the measurement time point of the historical SSB is within a target time duration range.

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

In this embodiment of the present application, since the CSI-RS is a reference signal indicated by the relationship indication information, it is described 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 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, and the monitoring opportunity is determined based on the SSB. In addition, the terminal device obtains the RSRP of the SSB, updates the RSRP of the SSB, the corresponding index and the time point to the second data set, facilitates the subsequent terminal device to query the SSB with the highest RSRP from the second data set, and determines the monitoring opportunity based on the SSB with the highest RSRP.

Fourthly, after the terminal device measures the RSRPs of the SSBs in the target SSB Burst Set, the indexes and time points corresponding to the SSBs respectively and the RSRPs of the SSBs are updated to the second data Set. And 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 time point of measuring the RSRP of the SSB.

In the embodiment of the present application, after the terminal device measures RSRPs of multiple SSBs, the RSRPs of the multiple SSBs, corresponding indexes and time points are updated to the second data set, so that subsequent terminal devices can conveniently query the SSBs with the highest RSRPs from the second data set, and thus determine a monitoring opportunity based on the SSBs with the highest RSRPs.

Fifthly, under the condition that the terminal equipment successfully receives the PDCCH based on the target monitoring opportunity, determining an SSB having a QCL relationship with the DMRS of the PDCCH; and updating the index and the time point corresponding to the SSB to the first data set. Wherein, the time point corresponding to the SSB is a time point of receiving the PDCCH. Optionally, the time point for receiving the PDCCH is a Slot number for receiving the PDCCH.

In this embodiment of the present application, the terminal device successfully receiving the PDCCH based on the target monitoring opportunity can indicate that: in this case, the index corresponding to the SSB and the time point are updated to the first data set, so that the SSB is 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 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, which is not limited in this embodiment of the application.

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

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

The embodiment of the application provides multiple scenes for updating the first data set and the second data set so as to ensure that the index and the time point of the latest corresponding SSB with the sending channel quality meeting the quality condition and the latest RSRP (received signal reference power) of the latest SSB are updated into the data set, so that the terminal equipment can monitor the PDCCH based on the historical SSB with the corresponding sending channel quality meeting the quality condition or the historical SSB with the highest RSRP in the SSB, the method can obviously improve the receiving success rate of the PDCCH, and avoid false detection, missed detection and repeated retransmission combination of the PDCCH, thereby enabling the terminal equipment to quickly and successfully receive the common control information based on the PDCCH. It should be noted that the various scenarios of updating the data set are merely exemplary, and the data set can be updated in other scenarios, which is not limited in the embodiment of the present application.

Fig. 6 shows a flowchart of 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 an SSB, and determines a target SSB Burst Set to select a target SSB in a case where it is determined that the PDCCH is to be monitored based on the SSB. Referring to fig. 6, the method includes:

601. and the terminal equipment determines the earliest monitoring opportunity in the plurality of monitoring opportunities of the PDCCH under the condition of meeting the target configuration condition.

In the case where 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 transmission channels corresponding to the SSBs in the target SSB Burst Set are different in quality, and in this case, the terminal device can select the monitoring timing of the PDCCH transmitted on the channel with good quality based on the SSBs. Therefore, in this case, the terminal device monitors the PDCCH based on the SSBs, that is, selects the SSBs with good transmission channel quality, determines the monitoring time corresponding to the SSBs, and monitors the PDCCH at the monitoring time.

Optionally, the target configuration condition includes: 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. The network device is configured to transmit the PDCCH to the terminal device at a plurality of monitoring occasions within 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 PDCCH has a Search Space other than Search Space Zero. When the terminal device is in a connected state and the configured Search Space of the PDCCH is a Search Space other than Search Space Zero, the plurality of SSBs in the SSB Burst Set are transmitted through the plurality of beams having the same scanning direction, and therefore the transmission channel qualities corresponding to the plurality of SSBs are the same, and therefore the transmission channel qualities of the PDCCH corresponding to the plurality of monitoring occasions are the same.

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 the first On Duration (active period) after the current time point in a configured Discontinuous Reception (DRX) period; determining an earliest monitoring opportunity of a plurality of monitoring opportunities in the On duration.

Wherein, the DRX period is composed of an On Duration and an Opportunity for DRX (sleep period). In the On Duration, the terminal device monitors and receives the PDCCH, and in the Opportunity for DRX, the terminal device does not receive the PDCCH to save power consumption. Therefore, when 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 multiple monitoring occasions.

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 application, the terminal device determines the earliest monitoring opportunity in a plurality of monitoring opportunities in the On Duration, determines the target SSB Burst Set based On the earliest monitoring opportunity, and then subsequently determines the target monitoring opportunity based On the SSB in the SSB Burst Set to be in the On Duration of the DRX cycle, so that the terminal device only needs to monitor the PDCCH in the On Duration, and the power consumption of the terminal can be saved.

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

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

603. The terminal equipment selects a target SSB Burst Set from the plurality of SSB Burst sets, and the time length between the sending time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity is shortest and 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. The second time length is the time length consumed for performing RSRP measurement on the plurality of SSBs; the third time length is the time length consumed by determining the target SSB from the plurality of SSBs; the fourth duration is a duration consumed to determine a target monitoring occasion for the PDCCH based on the target SSB.

In the embodiment of the present application, a time duration between a sending time point corresponding to a last SSB in a target SSB Burst Set and an earliest monitoring opportunity is not less than a first time duration, so that it is ensured that the terminal device has enough time to perform RSRP measurement, determine the target SSB, and determine the target monitoring opportunity based on the target SSB. In addition, the time length between the sending time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity is shortest, so that the time length of the interval between the time point for measuring the SSB and the monitoring opportunity of the PDCCH can be ensured to be shortest, the quality change of the sending channel corresponding to the SSB is ensured to be minimum in the interval time, and the quality of the sending channel of the PDCCH corresponding to the target monitoring opportunity determined based on the SSB is further ensured.

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

FIG. 7 is a schematic diagram of the process of determining the target SSB Burst Set. Referring to fig. 7, the earliest monitoring opportunity is MO1, and between the current time point (t0) and the earliest monitoring opportunity, the network device transmits 3 SSB Burst sets, where, except for the first SSB Burst Set, the time duration between the transmission time point corresponding to the last SSB in the other two SSB Burst sets and the earliest monitoring opportunity is less than the first time duration, and thus the first SSB Burst Set is the target SSB Burst Set.

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

Optionally, the terminal device measures RSRP of multiple SSBs in the target SSB Burst Set through an RF (Radio Frequency) module. The RF module is a module for transmitting and receiving information in the terminal device. Optionally, the terminal device turns on the RF module only during the process of measuring RSRPs of multiple SSBs in the target SSB Burst Set. After the measurement, the terminal equipment closes 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 to specifically enter 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 the RSRP of the plurality of SSBs.

606. And the terminal equipment monitors the PDCCH based on the target SSB, wherein the DMRS of the PDCCH has QCL relation with the target SSB.

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

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

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 opportunity in the On Duration is not less than the first Duration. The radio frequency module is in a working state in a time period for measuring a target SSB Burst Set and a time period for receiving the PDCCH, and is in a closed 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 a target monitoring opportunity based on the SSB with the highest RSRP, and a time period of processing the received PDCCH, and other time periods are in a closed state, so that the power consumption of the terminal equipment can be saved.

Fig. 9 is a schematic diagram of a process for determining a target monitoring opportunity. Referring to fig. 9, the left side shows 5 scenarios of updating the database, the first scenario is that in the process of cell search or system message update of a cell, an SSB is received and a 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 RSRP of multiple SSBs in the target SSB Burst Set. A fifth scenario is successful reception of PDCCH based on target monitoring occasions. The specific manner of updating the database in these 5 scenarios is already described in detail in the embodiment corresponding to fig. 3, and is not described herein again.

With continued reference to fig. 9, in the case that 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 the first target SSB returned by the database is received. In the case that the first target SSB is available (the time duration between the time point corresponding to the first target SSB and the current time point is not greater than the fifth time duration), the target monitoring timing is determined directly based on the first target SSB. Under the condition that the first target SSB is unavailable (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), the terminal equipment queries the second target SSB, namely, requests the second target SSB from the database, and receives the second target SSB returned by the database. In the case that a second target SSB is available (the time duration between the time point corresponding to the second target SSB and the current time point is not greater than a sixth time duration), a target monitoring opportunity is determined directly based on the second target SSB, in the case that the second target SSB is not available (the time duration between the time point corresponding to the second target SSB and the current time point is greater than the sixth time duration), RSRP measurement is initiated, that is, RSRPs of a plurality of SSBs in a target SSB Burst Set are measured, the RSRPs of the plurality of SSBs are updated into a database, then the terminal device queries a second target SSB with the highest RSRP from the database again, and in the case that the second target SSB is available, the target monitoring opportunity is determined based on the second target SSB.

The following are embodiments of an apparatus of the present application that can be used to perform embodiments of the method of the present application. For details which are not disclosed in the device embodiments of the present application, reference is made to the method embodiments of the present application.

Referring to fig. 10, a block diagram 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 multiple synchronization signal blocks SSB in a target synchronization signal Burst Set SSB Burst Set;

a target SSB determining 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 a target SSB, where a demodulation reference signal DMRS of the PDCCH and the target SSB have a quasi-co-located QCL relationship.

In a possible implementation manner, the PDCCH monitoring module 1003 is specifically configured to determine a target monitoring occasion based on an index of a target SSB, where a DMRS of a PDCCH corresponding to the target monitoring occasion has a QCL relationship with the target SSB; and monitoring the PDCCH at the target monitoring opportunity.

In a possible implementation manner, the target SSB determining module 1002 is specifically configured to select an SSB with the highest RSRP from a plurality of SSBs; and determining the SSB with the highest RSRP as the target SSB.

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

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

the second time length is the time length consumed for performing RSRP measurement on the plurality of SSBs;

the third time length is the time length consumed by determining the target SSB from the plurality of SSBs;

the fourth duration is a duration consumed to determine a target monitoring occasion for 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 opportunity in the multiple monitoring opportunities of the PDCCH, determining multiple SSB Burst sets sent by the network equipment between the current time point and the earliest monitoring opportunity, and determining a sending 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 multiple SSB Burst sets, where a time duration between a sending time point corresponding to a last SSB in the target SSB Burst Set and an earliest monitoring time is shortest and is not less than the first time duration.

In a possible implementation manner, the first determining module is configured to determine a first active period On Duration after a current time point in a configured discontinuous reception DRX cycle; determining an earliest monitoring opportunity of a plurality of monitoring opportunities in the On duration.

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

In a possible implementation manner, the RSRP measurement module 1001 is specifically configured to measure RSRPs of multiple 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 and a duration between a time point corresponding to the second target SSB and the current time point is greater than a sixth duration; and the second target SSB is the SSB with the highest RSRP in the SSBs sent by the network equipment before the current time point.

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

storing a time point corresponding to the second target SSB in a second data set;

the device still includes:

and the time point query module is used for querying the time point corresponding to the first target SSB from the first data set and querying the 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 a time point corresponding to the SSB to a 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 QCL relationship, and the time point corresponding to the SSB is the receiving time point of the SSB.

In a possible implementation manner, the storage module is further configured to update, to the first data set, a time point corresponding to an SSB used for random access under the condition that the random access is successful, 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 acquired in the random access process and the RSRP of the SSB 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 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 a second data set; wherein, the time point corresponding to the SSB is the receiving time point of the SSB.

In a possible implementation manner, the storage module is further configured to update, to the first data set, a time point corresponding to an SSB having a QCL relationship with the CSI-RS when the 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 the channel state information reference signal CSI-RS; updating the time point corresponding to the SSB and the RSRP of the SSB to a second data set; wherein, the time point corresponding to the SSB is the receiving time point of the SSB.

In a possible implementation manner, the storage module is further configured to obtain RSRP of the historical CSI-RS and 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 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.

In a possible implementation manner, the storage module is further configured to update time points corresponding to the plurality of SSBs and RSRPs of the plurality of SSBs to the second data set, where the time point corresponding to the SSB is a time point for measuring the RSRP of the SSB.

In a possible implementation manner, the storage module is further configured to determine, in a case that the PDCCH is successfully received, 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 for receiving the PDCCH.

In a possible implementation manner, the PDCCH monitoring module 1003 is further configured to monitor the PDCCH based on the first target SSB when 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 a 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 the PDCCH based on the second target SSB when a duration between a time point corresponding to the first target SSB and the 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 and the second target SSB have a QCL relationship.

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

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

It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the terminal device may be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.

Fig. 11 shows a schematic structural diagram of a communication device provided in an exemplary embodiment of the present application, where 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, 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 one communication chip.

The memory 1104 is coupled to the processor 1101 by a bus 1105.

The memory 1104 may be used for storing at least one program code, which the processor 1101 is used for executing in order to implement the respective steps in the above-described method embodiments.

Further, the communication device may be a terminal device or a network device. The memory 1104 may be implemented by any type or combination of volatile or non-volatile storage devices, including but not limited to: magnetic or optical disks, EEPROMs (Electrically Erasable Programmable Read Only memories), EPROMs (Erasable Programmable Read Only memories), SRAMs (Static Random Access memories), ROMs (Read Only memories), magnetic memories, flash memories, Programmable Read Only Memories (PROMs).

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

The present application also provides a computer program product having at least one program code stored therein, which is 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, which includes a programmable logic circuit and/or program instructions, and when the chip runs on a terminal device, the chip is used to implement the PDCCH monitoring method according to the above aspect.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

It will be understood by those skilled in the art that all or part of the steps in the PDCCH monitoring method implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disk, or the like.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A PDCCH monitoring method, wherein the method comprises:

2. The method of claim 1, wherein the monitoring a 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 opportunity.

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

selecting the SSB with the highest RSRP from the plurality of SSBs;

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

4. The method of claim 1,

the time length between the sending time point corresponding to the last SSB in the target SSB Burst Set and the earliest monitoring opportunity in the plurality of monitoring opportunities of the PDCCH is not less than a first time length;

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

the second duration is a duration consumed for performing RSRP measurement on the plurality of SSBs;

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

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

5. The method of claim 4, wherein before measuring Reference Signal Received Power (RSRP) of a plurality of Synchronization Signal Blocks (SSBs) in a target Set of SSB bursts (SSB Burst Set), the method further comprises:

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

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

and selecting the target SSB Burst Set from the plurality of 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 opportunity is shortest and is not less than the first time length.

6. The method of claim 5, wherein the determining an earliest monitoring occasion among the plurality of monitoring occasions for the PDCCH comprises:

determining a first active period On Duration located after the current time point in the configured Discontinuous Reception (DRX) cycle;

determining an earliest monitoring opportunity of a plurality of monitoring opportunities in the On duration.

7. The method of claim 1, wherein the measuring Reference Signal Received Power (RSRP) of a plurality of Synchronization Signal Blocks (SSBs) in a target Set of SSB bursts (SSB Burst Set) comprises:

under the condition that the time length between the time point corresponding to the first target SSB and the current time point is greater than a fifth time length, measuring the RSRPs of a plurality of SSBs in the target SSB Burst Set;

and 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.

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

measuring RSRPs of a plurality of SSBs in the target SSB Burst Set 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;

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

9. The method of claim 8,

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

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

the method further comprises the following steps:

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

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

10. The method of claim 9, further comprising:

updating the 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;

wherein 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.

11. The method of claim 9, further comprising:

under the condition that the random access is successful, updating a time point corresponding to an SSB used by the random access to the first data set, wherein the time point corresponding to the 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.

12. The method of claim 9, further comprising:

updating a time point corresponding to an SSB to the first data set when relationship indication information sent by the network equipment is received and the relationship indication information indicates a QCL relationship between a 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;

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

13. The method of claim 9, further comprising:

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

14. The method of claim 13, wherein before the time corresponding to the SSB and the RSRP of the SSB are updated to the second data set, the method further comprises:

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

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

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

15. The method of claim 9, wherein after measuring Reference Signal Received Power (RSRP) of a plurality of Synchronization Signal Blocks (SSBs) in a target Set of SSB bursts (SSB Burst Set), the method further comprises:

and updating the time points corresponding to the plurality of SSBs and the RSRPs of the plurality of SSBs to the second data set, wherein the time points corresponding to the SSBs are the time points for measuring the RSRPs of the SSBs.

16. The method of claim 9, further comprising:

determining, on a successful reception of the PDCCH, an SSB having a QCL relationship with a 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 for receiving the PDCCH.

17. The method according to any one of claims 7-16, further comprising:

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

18. The method according to any one of claims 7-16, further comprising:

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

19. The method according to any of claims 1-16, 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 a plurality of Synchronization Signal Blocks (SSB) in the measurement target synchronization signal Burst Set (SSB Burst Set) comprises:

and measuring RSRP of a plurality of SSBs in the target SSB Burst Set under the condition that the terminal equipment meets a target configuration condition, wherein the sending 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.

20. A PDCCH monitoring apparatus, wherein the apparatus comprises:

21. 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 according to any of claims 1 to 19.

22. 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 according to any of claims 1 to 19.

23. A chip comprising programmable logic circuits and/or program instructions for implementing the PDC CH monitoring method of any one of claims 1 to 19 when the chip is run on a terminal device.