Beam quality monitoring method, device, equipment and medium

Abstract

The invention discloses a beam quality monitoring method, device, equipment and medium, terminal equipment selects at least two CORESETs as CORESETs to be monitored, the CORESETs comprise CORESETs of an SFN transmission mode, BFD RSs to be monitored are determined according to CSI RSs associated in an activated TCI state in the CORESETs to be detected, and beam quality monitoring is carried out based on each BFD RS to be monitored. According to the method and the device, the beam quality of at least two CORESETs is monitored, and the monitored CORESETs comprise the CORESETs in the SFN transmission mode. The CSI RSs of the two transmission points are associated in the TCI state activated in the CORESET of the SFN transmission mode. Therefore, the beam quality of the two transmission points can be monitored. The problem that the beam quality of the PDCCH cannot be accurately reflected in the prior art is solved.

Description

[0001] The present disclosure is a divisional application of an invention patent with the invention name: Beam quality monitoring method, device, equipment and medium, application number: 202110901975.1, and the parent application date is August 6, 2021. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to a beam quality monitoring method, device, equipment and medium. Background Art

[0003] In the fifth generation (5G) new radio (NR) system, analog beamforming of the physical downlink control channel (PDCCH) based on each control resource set CORESET is supported. In the NR system, the network device side configures or predefines a set of beam failure detection reference signals (BFDRS) for each service cell of the terminal device. The reference signals in this set are used to reflect the beam quality of the PDCCH, that is, the quality of the transmission configuration indication (TCI) status. When the received power of all reference signals contained in the set is lower than a specific threshold, the physical layer of the terminal device will indicate a beam failure event to the high layer of the terminal device. When the number of beam failures reaches a certain number within a certain period of time, it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0004] In the related art, when the terminal device UE does not receive the radio resource control (RRC) configuration about the BFD RS sent by the network device side (network device side), the terminal device UE can use the channel state information reference signal CSI RS index value in the TCI state in the CORESET in the monitored PDCCH as the index value of the BFD RS in the BFD RS set, and the UE can only determine two BFD RSs at most. In the related art, the CORESET is generally determined randomly, and then the CSI RS in the TCI state in the CORESET is used as the BFD RS. If two BFDRSs are determined in the CORESET, the beam quality of the two BFD RSs is calculated. If a BFD RS is determined in the CORESET, then another CORESET can be randomly determined, and a CSI RS in the TCI state in the CORESET can be determined as the BFD RS. If there are two CSI RS indexes in a TCI state at this time, the UE can use the index value of the CSI RS associated with QCL-typeD as the index value of the BFD RS.

[0005] In the 5G standard Rel-15 / 16, the CORESETs in the PDCCH are all single-point transmission modes, and the protocol stipulates that the UE can only determine a maximum of two BFD RSs. This ensures that the beam quality of the two CORESETs is monitored. The related technology has a good monitoring effect in the 5G standard Rel-15 / 16. However, in the 5G standard Rel-17, PDCCH plans to add a new single-frequency network (SFN) transmission mode. In this transmission mode, each CORESET can activate two TCI states by the media access control unit MAC-CE, where each TCI state can be associated with a maximum of one QCL-typeA type information and one QCL-typeD type information. The CSI RS of the two transmission points associated in the activated TCI state in the CORESET of the SFN transmission mode.

[0006] The beam quality monitoring solution in the related art has the following problems in the SFN transmission mode:

[0007] 1. If Figure 1As shown, when the UE determines the BFD RS by itself, two BFD RSs may correspond to two different CORESETs. One CORESET contains two TCI states, that is, it is sent in SFN mode, while the other determined CORESET contains only one TCI state, that is, it is sent in single-point transmission (S-TRP) mode. However, at this time, both BFD RSs are associated with two beams of a transmission point TRP 1. In this case, the beam failure monitoring can only reflect the actual beam quality of TRP 1. If the TRP1 beam fails to work, a beam failure event will be triggered, but TRP2 may still work at this time. Beam quality monitoring cannot guarantee that the beam quality of all transmission points is monitored. Therefore, it cannot truly reflect the beam quality of PDCCH.

[0008] 2. If Figure 2 As shown in the figure, a possible best case is that the two BFD RSs determined by the UE correspond to a CORESET of SFN transmission. In this case, although the two BFD RSs can reflect the transmit beam quality of the two TRPs, the UE can only monitor the beam quality of one CORESET. Due to the reduction in the number of monitored CORESETs, the monitoring of the beam is greatly limited and cannot accurately reflect the beam quality of the PDCCH.

[0009] It can be seen that the related technology cannot monitor the beam quality of two transmission points and multiple CORESETs at the same time, and therefore cannot accurately reflect the beam quality of PDCCH. Summary of the invention

[0010] The present disclosure provides a beam quality monitoring method, apparatus, device and medium to solve the problem that the beam quality of two transmission points and multiple CORESETs cannot be monitored simultaneously, and therefore the beam quality of PDCCH cannot be accurately reflected.

[0011] The specific technical solutions provided by the embodiments of the present disclosure are as follows:

[0012] In a first aspect, the present disclosure provides a beam quality monitoring method, the method comprising:

[0013] Receiving radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by the network device side, and determining the index value of each control resource set CORESET and the transmission configuration indication TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information;

[0014] Determining a transmission mode of each CORESET according to a TCI state activated in each CORESET, wherein the transmission mode includes a single frequency network (SFN) transmission mode and a single point transmission mode;

[0015] Selecting at least two CORESETs as CORESETs to be monitored, wherein the CORESETs to be detected include a CORESET in SFN transmission mode;

[0016] Determine each beam failure detection reference signal BFD RS to be monitored according to a periodic channel state information reference signal CSI RS associated with an activated TCI state in each CORESET to be monitored;

[0017] Beam quality monitoring is performed based on each BFD RS to be monitored.

[0018] Optionally, the selecting at least two CORESETs as the CORESETs to be monitored includes:

[0019] Each of the CORESETs is sorted according to a preset priority rule, and at least two CORESETs are selected as CORESETs to be monitored according to the sorting result.

[0020] Optionally, the sorting of each CORESET according to a preset priority rule includes:

[0021] Sort each CORESET according to the index value of each CORESET; wherein the priority of the CORESET with a smaller index value is higher than the CORESET with a larger index value; or

[0022] According to the transmission mode of each CORESET, each CORESET is sorted; wherein the priority of the CORESET of the SFN transmission mode is higher than the CORESET of the single point transmission mode; or

[0023] Each CORESET is sorted according to the transmission mode and index value of each CORESET; wherein the priority of the transmission mode is higher than the priority of the index value, the priority of the CORESET of the SFN transmission mode is higher than the priority of the CORESET of the single-point transmission mode, and the priority of the CORESET with a small index value is higher than the CORESET with a large index value.

[0024] Optionally, determining the transmission mode of each CORESET according to the transmission configuration indication TCI state activated in each CORESET includes:

[0025] For each CORESET, determining whether the RRC configuration information contains SFN configuration information of the CORESET;

[0026] If the RRC configuration information contains SFN configuration information of the CORESET, and it is determined according to the MAC-CE activation information that two TCI states are activated in the CORESET, determining that the transmission mode of the CORESET is the SFN transmission mode;

[0027] If the SFN configuration information of the CORESET exists in the RRC configuration information, and an activation TCI state of the CORESET is determined according to the MAC-CE activation information, determining that the transmission mode of the CORESET is a single-point transmission mode;

[0028] If the SFN configuration information of the CORESET does not exist in the RRC configuration information, and the activation of a TCI state of the CORESET is determined according to the MAC-CE activation information, it is determined that the transmission mode of the CORESET is a single-point transmission mode.

[0029] Optionally, determining each BFD RS to be monitored according to a CSI RS associated with a TCI state activated in each CORESET to be monitored includes:

[0030] All CSI RSs associated with the activated TCI state in each CORESET to be monitored are used as each BFD RS to be monitored; or

[0031] All CSI RSs associated with the activated TCI state in each CORESET to be monitored are used as candidate CSI RSs to be monitored, and a preset number of candidate CSI RSs to be monitored are selected as BFD RSs to be monitored according to the sorting result of each CORESET, wherein the preset number of candidate CSI RSs to be monitored include CSI RSs associated with the activated TCI states in at least two CORESETs to be monitored, and the at least two CORESETs to be monitored include at least one CORESET of SFN transmission mode.

[0032] Optionally, the performing beam quality monitoring based on each BFD RS to be monitored includes:

[0033] The beam quality of each BFD RS to be monitored is calculated separately. If each determined beam quality satisfies a preset beam failure condition, a beam failure event is triggered; or

[0034] The two BFD RSs to be monitored that are associated with the same CORESET are taken as a BFD RS group. The beam quality of the two BFD RSs to be monitored in the BFD RS group is jointly calculated, and the beam quality of the BFD RS in the non-BFD RS group is calculated separately. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered.

[0035] Optionally, the separately calculating the beam quality of each BFD RS to be monitored includes:

[0036] For each BFD RS to be monitored, a measurement output value corresponding to the measurement scale of the BFD RS to be monitored is determined, a block error rate BLER value is determined according to the measurement output value, and the BLER value is used as the beam quality of the BFD RS to be monitored.

[0037] Optionally, the jointly calculating beam qualities of two BFD RSs to be monitored in the BFD RS group includes:

[0038] The measurement output values ​​corresponding to the measurement scales of two BFD RSs to be monitored in the BFD RS group are respectively determined, the two measurement output values ​​are superimposed, and a BLER value is determined according to the superimposed measurement output value, and the BLER value is used as the beam quality of the BFD RS group.

[0039] In a second aspect, the present disclosure provides a beam quality monitoring device, the device comprising:

[0040] A receiving unit, configured to receive radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by the network device side, and determine the index value of each control resource set CORESET and the transmission configuration indication TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information;

[0041] A first determining unit, configured to determine a transmission mode of each CORESET according to a TCI state activated in each CORESET, wherein the transmission mode includes a single frequency network (SFN) transmission mode and a single point transmission mode;

[0042] A second determining unit is configured to select at least two CORESETs as CORESETs to be monitored, wherein the CORESETs to be detected include CORESETs in SFN transmission mode;

[0043] The third determining unit is used to determine each beam failure detection reference signal BFD RS to be monitored according to the periodic channel state information reference signal CSI RS associated with the activated TCI state in each CORESET to be monitored.

[0044] The monitoring unit is used to perform beam quality monitoring based on each BFD RS to be monitored.

[0045] Optionally, the second determining unit is specifically configured to sort each of the CORESETs according to a preset priority rule, and select at least two CORESETs as the CORESETs to be monitored according to the sorting result.

[0046] Optionally, the second determination unit is specifically used to sort each CORESET according to the index value of each CORESET, wherein the priority of the CORESET with a smaller index value is higher than that of the CORESET with a larger index value; or sort each CORESET according to the transmission mode of each CORESET, wherein the priority of the CORESET of the SFN transmission mode is higher than that of the CORESET of the single-point transmission mode; or sort each CORESET according to the transmission mode and index value of each CORESET, wherein the priority of the transmission mode is higher than the priority of the index value, the priority of the CORESET of the SFN transmission mode is higher than that of the CORESET of the single-point transmission mode, and the priority of the CORESET of the smaller index value is higher than that of the CORESET of the larger index value.

[0047] Optionally, the first determination unit is specifically used to determine, for each CORESET, whether there is SFN configuration information of the CORESET in the RRC configuration information; if the SFN configuration information of the CORESET exists in the RRC configuration information, and it is determined that two TCI states are activated in the CORESET according to the MAC-CE activation information, it is determined that the transmission mode of the CORESET is the SFN transmission mode; if the SFN configuration information of the CORESET exists in the RRC configuration information, and it is determined that one TCI state of the CORESET is activated according to the MAC-CE activation information, it is determined that the transmission mode of the CORESET is a single-point transmission mode; if the SFN configuration information of the CORESET does not exist in the RRC configuration information, and it is determined that one TCI state of the CORESET is activated according to the MAC-CE activation information, it is determined that the transmission mode of the CORESET is a single-point transmission mode.

[0048] Optionally, the third determination unit is specifically used to use all CSI RSs associated with the activated TCI state in each CORESET to be monitored as each BFD RS to be monitored; or use all CSI RSs associated with the activated TCI state in each CORESET to be monitored as candidate CSI RSs to be monitored, and select a preset number of candidate CSI RSs to be monitored as BFD RSs to be monitored according to the sorting result of each CORESET, wherein the preset number of candidate CSI RSs to be monitored include CSI RSs associated with the activated TCI state in at least two CORESETs to be monitored, and the at least two CORESETs to be monitored include at least one CORESET with SFN transmission mode.

[0049] Optionally, the monitoring unit is specifically used to separately calculate the beam quality of each BFD RS to be monitored, and if each determined beam quality meets a preset beam failure condition, a beam failure event is triggered; or two BFD RSs to be monitored that are associated with the same CORESET are used as a BFD RS group, and the beam quality of the two BFD RSs to be monitored in the BFD RS group are jointly calculated, and the beam quality of the BFD RS in the non-BFD RS group is separately calculated. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered.

[0050] Optionally, the monitoring unit is specifically used to determine, for each BFD RS to be monitored, a measurement output value corresponding to the measurement scale of the BFD RS to be monitored, determine a block error rate BLER value based on the measurement output value, and use the BLER value as the beam quality of the BFD RS to be monitored.

[0051] Optionally, the monitoring unit is specifically used to respectively determine the measurement output values ​​corresponding to the measurement scales of two BFDRS to be monitored in the BFD RS group, superimpose the two measurement output values, and determine the BLER value based on the superimposed measurement output value, and use the BLER value as the beam quality of the BFD RS group.

[0052] In a third aspect, the present disclosure provides a terminal device, the terminal device comprising:

[0053] A memory for storing executable instructions;

[0054] The processor is configured to read and execute the executable instructions stored in the memory to perform the following processes:

[0055] Receiving radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by the network device side, and determining the index value of each control resource set CORESET and the transmission configuration indication TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information;

[0056] Determining a transmission mode of each CORESET according to a TCI state activated in each CORESET, wherein the transmission mode includes a single frequency network (SFN) transmission mode and a single point transmission mode;

[0057] Selecting at least two CORESETs as CORESETs to be monitored, wherein the CORESETs to be detected include a CORESET in SFN transmission mode;

[0058] Determine each beam failure detection reference signal BFD RS to be monitored according to a periodic channel state information reference signal CSI RS associated with an activated TCI state in each CORESET to be monitored;

[0059] Beam quality monitoring is performed based on each BFD RS to be monitored.

[0060] In a fourth aspect, the present disclosure provides a computer-readable storage medium. When instructions in the computer-readable storage medium are executed by a processor, the processor is enabled to execute any one of the methods in the first aspect.

[0061] Since the terminal device of the present disclosure determines the index value of each CORESET and the TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information, the transmission mode of each CORESET is determined according to the TCI state activated in each CORESET. At least two CORESETs are selected as the CORESETs to be monitored, wherein the CORESETs to be detected include the CORESETs of the SFN transmission mode. Finally, the BFD RS to be monitored is determined according to the CSI RS associated with the TCI state activated in the CORESET to be detected, and the beam quality monitoring is performed based on each BFD RS to be monitored. The present disclosure monitors the beam quality of at least two CORESETs, and the monitored CORESETs include the CORESETs of the SFN transmission mode. Because the CSI RSs of two transmission points are associated in the TCI state activated in the CORESET of the SFN transmission mode. Therefore, the present disclosure can monitor the beam quality of two transmission points. The present disclosure monitors the beam quality of at least two CORESETs and two transmission points, which solves the problem that the beam quality of PDCCH cannot be accurately reflected in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 A diagram of a process for determining a BFD RS based on a CORESET within a unit frequency band in the related art;

[0063] Figure 2 Another process diagram of determining a BFD RS based on a CORESET within a unit frequency band in the related art;

[0064] Figure 3 A schematic diagram of a beam quality monitoring process in an embodiment of the present disclosure;

[0065] Figure 4 It is a diagram of the process of determining the BFD RS according to the CORESET in the unit frequency band in Embodiment 1 of the present disclosure;

[0066] Figure 5 It is a diagram of the process of determining the BFD RS according to the CORESET in the unit frequency band in Embodiment 2 of the present disclosure;

[0067] Figure 6 It is a diagram of the process of determining the BFD RS according to the CORESET in the unit frequency band in Embodiment 3 of the present disclosure;

[0068] Figure 7 It is a diagram of the process of determining the BFD RS according to the CORESET in the unit frequency band in Embodiment 4 of the present disclosure;

[0069] Figure 8It is a diagram of the process of determining the BFD RS according to the CORESET in the unit frequency band in Embodiment 5 of the present disclosure;

[0070] Fig. 9 It is a diagram of the process of determining the BFD RS according to the CORESET in the unit frequency band in Embodiment 6 of the present disclosure;

[0071] Fig.10 It is a diagram of the process of determining the BFD RS according to the CORESET in the unit frequency band in Embodiment 7 of the present disclosure;

[0072] Fig.11 It is a diagram of the process of determining the BFD RS according to the CORESET in the unit frequency band in Embodiment 8 of the present disclosure;

[0073] Fig.12 It is a schematic diagram of the structure of a beam quality monitoring device in an embodiment of the present disclosure;

[0074] Fig.13 The present invention is a schematic diagram of the structure of a terminal device in an embodiment of the present invention. DETAILED DESCRIPTION

[0075] In order to solve the problem that the beam quality of two transmission points and multiple CORESETs cannot be monitored at the same time in the related art, and therefore the beam quality of PDCCH cannot be accurately reflected, in the embodiment of the present disclosure, the terminal device determines the index value of each CORESET and the TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information, and determines the transmission mode of each CORESET according to the TCI state activated in each CORESET. At least two CORESETs are selected as the CORESETs to be monitored, wherein the CORESETs to be detected include the CORESETs of the SFN transmission mode. Finally, the BFD RS to be monitored is determined according to the CSI RS associated with the TCI state activated in the CORESET to be detected, and the beam quality monitoring is performed based on each BFDRS to be monitored. The present disclosure monitors the beam quality of at least two CORESETs, and the monitored CORESETs include the CORESETs of the SFN transmission mode. Because the CSI RSs of the two transmission points are associated in the TCI state activated in the CORESET of the SFN transmission mode. Therefore, the present disclosure can monitor the beam quality of the two transmission points. The present disclosure monitors the beam quality of at least two CORESETs and two transmission points, solving the problem in the related art that the beam quality of the PDCCH cannot be accurately reflected.

[0076] The abbreviations and their English definitions involved in this disclosure are shown in the following table:

[0077]

[0078]

[0079] Figure 3 A schematic diagram of a beam quality monitoring process provided by the present disclosure, the process comprising:

[0080] S101: Receive radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by the network device side, and determine the index value of each control resource set CORESET and the activated transmission configuration indication TCI state in each CORESET according to the RRC configuration information and MAC-CE activation information.

[0081] The network device side sends the RRC configuration information and MAC-CE activation information of the PDCCH to the terminal device, where the RRC configuration information includes the PDCCH transmission mode configuration information, and the MAC-CE activation information includes one or more TCI states activated in each CORESET. Specifically, the network device side performs the following steps:

[0082] 1) Step 1: The network device sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH transmission mode configuration information, M TCI configuration information of each CORESET, etc.

[0083] 2) Step 2: The network device side can activate 1 or 2 TCI state configuration information from the M TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state can be associated with at most one QCL-typeA type information and one QCL-typeD type information.

[0084] 3) Step 3: The network device side sends PDCCH to the terminal through the TCI state activated by MAC-CE.

[0085] The terminal device receives the RRC configuration information and MAC-CE activation information of the PDCCH sent by the network device side, and determines the index value of each CORESET and the TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information.

[0086] S102: Determine a transmission mode of each CORESET according to a TCI state activated in each CORESET, wherein the transmission mode includes a single frequency network (SFN) transmission mode and a single point transmission mode.

[0087] In the present disclosure, the terminal device determines the transmission mode of each CORESET according to the TCI state activated in each CORESET. Optionally, for each CORESET, if the number of TCI states activated in the CORESET is one, the transmission mode of the CORESET is determined to be a single-point transmission mode; if the number of TCI states activated in the CORESET is two, the transmission mode of the CORESET is determined to be a SFN transmission mode.

[0088] S103: Select at least two CORESETs as CORESETs to be monitored, wherein the CORESETs to be detected include CORESETs in SFN transmission mode.

[0089] After the terminal device determines the index value of each CORESET, it selects at least two CORESETs as the CORESETs to be monitored. The present disclosure does not limit the number of CORESETs to be monitored, as long as the selected CORESETs to be monitored include CORESETs in SFN transmission mode.

[0090] For example, the terminal device determines that the index values ​​of each CORESET are CORESET 0, CORESET 1, and CORESET 2. The transmission mode of CORESET 0 and CORESET 1 is a single-point transmission mode, and the transmission mode of CORESET 2 is an SFN transmission mode. The selected CORESETs to be monitored may be CORESET 0 and CORESET 2, or CORESET 1 and CORESET 2, or CORESET 0, CORESET 1, and CORESET 2.

[0091] S104: Determine each beam failure detection reference signal BFD RS to be monitored according to the periodic channel state information reference signal CSI RS associated with the activated TCI state in each CORESET to be monitored.

[0092] The terminal device may use all CSI RSs associated with the TCI state activated in each CORESET to be monitored as the BFD RS to be monitored, or may select a preset number of CSI RSs from the CSI RSs associated with the TCI state activated in each CORESET to be monitored as the BFD RS to be monitored. The present disclosure does not limit the number of BFD RSs to be monitored, as long as the selected CSI RS includes CSI RSs associated with the TCI state activated in at least two CORESETs to be monitored, and the at least two CORESETs to be monitored include at least one CORESET of SFN transmission mode.

[0093] S105: Perform beam quality monitoring based on each BFD RS to be monitored.

[0094] The terminal device calculates the beam quality of each BFD RS to be monitored, and if each determined beam quality meets the preset beam failure condition, a beam failure event is triggered. The terminal device calculates the beam quality of each BFD RS to be monitored, which may be that the terminal device calculates the block error rate BLER value of each BFD RS to be monitored, and if each determined BLER value is greater than a preset BLER threshold, each determined beam quality meets the preset beam failure condition, triggering a beam failure event. The preset BLER threshold may be 10%.

[0095] In the embodiment of the present disclosure, the terminal device determines the index value of each CORESET and the TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information, and determines the transmission mode of each CORESET according to the TCI state activated in each CORESET. At least two CORESETs are selected as the CORESETs to be monitored, wherein the CORESETs to be detected include the CORESETs of the SFN transmission mode. Finally, the BFD RS to be monitored is determined according to the CSI RS associated with the TCI state activated in the CORESET to be detected, and the beam quality monitoring is performed based on each BFD RS to be monitored. The present disclosure monitors the beam quality of at least two CORESETs, and the monitored CORESETs include the CORESETs of the SFN transmission mode. Because the CSI RSs of the two transmission points are associated in the TCI state activated in the CORESET of the SFN transmission mode. Therefore, the present disclosure can monitor the beam quality of the two transmission points. The present disclosure monitors the beam quality of at least two CORESETs and two transmission points, which solves the problem that the beam quality of the PDCCH cannot be accurately reflected in the related art.

[0096] In order to facilitate the selection of the CORESET to be monitored, in the present disclosure, the selecting of at least two CORESETs as the CORESETs to be monitored includes:

[0097] Each of the CORESETs is sorted according to a preset priority rule, and at least two CORESETs are selected as CORESETs to be monitored according to the sorting result.

[0098] The terminal device saves the preset priority rule, and after determining each CORESET, sorts each CORESET according to the preset priority rule, and then selects at least two CORESETs as the CORESETs to be monitored according to the sorting result. For example, after the sorting is completed, at least two CORESETs are selected as the CORESETs to be monitored in a forward-to-backward order.

[0099] In the present disclosure, the sorting of each CORESET according to a preset priority rule includes:

[0100] Sort each CORESET according to the index value of each CORESET; wherein the priority of the CORESET with a smaller index value is higher than the CORESET with a larger index value; or

[0101] According to the transmission mode of each CORESET, each CORESET is sorted; wherein the priority of the CORESET of the SFN transmission mode is higher than the CORESET of the single point transmission mode; or

[0102] Each CORESET is sorted according to the transmission mode and index value of each CORESET; wherein the priority of the transmission mode is higher than the priority of the index value, the priority of the CORESET of the SFN transmission mode is higher than the priority of the CORESET of the single-point transmission mode, and the priority of the CORESET with a small index value is higher than the CORESET with a large index value.

[0103] The priority rules preset in this disclosure include the following rules:

[0104] The first method is to sort each CORESET only according to the index value of each CORESET, wherein the priority of the CORESET with a smaller index value is higher than that of the CORESET with a larger index value. For example, the CORESETs determined by the terminal device are CORESET 0, CORESET 1, and CORESET 2. Then, according to the index value of each CORESET, each CORESET is sorted, and the sorting result is also CORESET 0, CORESET 1, and CORESET 2. If the transmission mode of CORESET 0 or CORESET 1 is the SFN transmission mode, the terminal device can use CORESET 0 and CORESET 1 as the CORESETs to be monitored, or use CORESET0, CORESET 1, and CORESET 2 as the CORESETs to be monitored. If the transmission mode of CORESET 0 and CORESET 1 is single-point transmission mode, and the transmission mode of CORESET 2 is SFN transmission mode, in order to ensure that the selected CORESETs to be detected include CORESETs with SFN transmission mode, CORESET 0, CORESET 1 and CORESET 2 are used as CORESETs to be monitored.

[0105] The second method is to sort each CORESET only according to the transmission mode of each CORESET, wherein the priority of the CORESET with SFN transmission mode is higher than that of the CORESET with single-point transmission mode. There is no limitation on the sorting of CORESETs with the same transmission mode, as long as the sorting of the CORESET with SFN transmission mode is higher than that of the CORESET with single-point transmission mode. For example, the CORESETs determined by the terminal device are CORESET 0, CORESET 1, and CORESET 2. If the transmission mode of CORESET 0 and CORESET 1 is single-point transmission mode, and the transmission mode of CORESET 2 is SFN transmission mode, the sorting result is CORESET 2, CORESET 0, CORESET 1 or CORESET 2, CORESET 1, CORESET 0, and then at least two CORESETs are selected from front to back as the CORESETs to be monitored according to the sorting result.

[0106] The third method is to sort each CORESET according to its transmission mode and index value; wherein the priority of the transmission mode is higher than the priority of the index value, the priority of the CORESET of the SFN transmission mode is higher than the CORESET of the single-point transmission mode, and the priority of the CORESET with a smaller index value is higher than the CORESET with a larger index value. That is to say, the CORESET of the SFN transmission mode is sorted before the CORESET of the single-point transmission mode, and the CORESETs of the same transmission mode are sorted according to the index value. For example, the CORESETs determined by the terminal device are CORESET 0, CORESET 1, CORESET 2, and CORESET 3. If the transmission mode of CORESET 0 and CORESET 2 is the single-point transmission mode, and the transmission mode of CORESET 1 and CORESET3 is the SFN transmission mode, the sorting result is CORESET 1, CORESET 3, CORESET 0, CORESET 2. Then, at least two CORESETs are selected from front to back as the CORESETs to be monitored according to the sorting results.

[0107] In order to determine the transmission mode of each CORESET more accurately, in the present disclosure, determining the transmission mode of each CORESET according to the transmission configuration indication TCI state activated in each CORESET includes:

[0108] For each CORESET, determining whether the RRC configuration information contains SFN configuration information of the CORESET;

[0109] If the RRC configuration information contains SFN configuration information of the CORESET, and it is determined according to the MAC-CE activation information that two TCI states are activated in the CORESET, determining that the transmission mode of the CORESET is the SFN transmission mode;

[0110] If the SFN configuration information of the CORESET exists in the RRC configuration information, and an activation TCI state of the CORESET is determined according to the MAC-CE activation information, determining that the transmission mode of the CORESET is a single-point transmission mode;

[0111] If the SFN configuration information of the CORESET does not exist in the RRC configuration information, and the activation of a TCI state of the CORESET is determined according to the MAC-CE activation information, it is determined that the transmission mode of the CORESET is a single-point transmission mode.

[0112] In the present disclosure, for each CORESET, it is first determined whether the SFN configuration information of the CORESET exists in the RRC configuration information. If so, the number of TCI states activated in the CORESET is determined according to the MAC-CE activation information. If two TCI states are activated in the CORESET according to the MAC-CE activation information, the transmission mode of the CORESET is determined to be the SFN transmission mode; if one TCI state is activated for the CORESET according to the MAC-CE activation information, the transmission mode of the CORESET is determined to be the single-point transmission mode. If the SFN configuration information of the CORESET does not exist in the RRC configuration information, and one TCI state is activated for the CORESET according to the MAC-CE activation information, the transmission mode of the CORESET is determined to be the single-point transmission mode.

[0113] That is, in the present disclosure, the terminal side performs the following steps:

[0114] 1) Step 1: The terminal device determines the transmission mode and TCI configuration information of each CORESET to be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. Among them, the following situations are included:

[0115] a) Case 1: If the RRC configuration information contains SFN configuration information of PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET as SFN transmission mode.

[0116] b) Case 2: If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0117] c) Case 3: If there is no SFN configuration information of PDCCH in the RRC configuration information, and MAC-CE activates 1 TCI state for the current CORESET, the UE may consider the current CORESET as a single-point transmission mode.

[0118] In the present disclosure, determining each BFD RS to be monitored according to the CSI RS associated with the activated TCI state in each CORESET to be monitored includes:

[0119] All CSI RSs associated with the activated TCI state in each CORESET to be monitored are used as each BFD RS to be monitored; or

[0120] All CSI RSs associated with the activated TCI state in each CORESET to be monitored are used as candidate CSI RSs to be monitored, and a preset number of candidate CSI RSs to be monitored are selected as BFD RSs to be monitored according to the sorting result of each CORESET, wherein the preset number of candidate CSI RSs to be monitored include CSI RSs associated with the activated TCI states in at least two CORESETs to be monitored, and the at least two CORESETs to be monitored include at least one CORESET of SFN transmission mode.

[0121] In the present disclosure, each BFD RS to be monitored is determined in the following manner:

[0122] Method 1: After determining each CORESET to be monitored, the number of BFD RSs to be monitored is not limited, and all CSI RSs associated with the activated TCI state in each CORESET to be monitored are used as each BFD RS to be monitored. For example, the determined CORESETs to be monitored are CORESET 0, CORESET 1, and CORESET 2. The CSI RSs associated with the activated TCI state in CORESET 0 are CSI RS 0 and CSI RS1, the CSI RSs associated with the activated TCI state in CORESET 1 are CSI RS2 and CSI RS 3, and the CSI RSs associated with the activated TCI state in CORESET 2 are CSI RS 4. Then CSI RS 0, CSI RS1, CSI RS2, CSI RS 3, and CSI RS 4 are all used as BFD RSs to be monitored.

[0123] Method 2: After determining each CORESET to be monitored, all CSI RSs associated with the activated TCI state in each CORESET to be monitored are used as candidate CSI RSs to be monitored, and then a preset number of candidate CSI RSs to be monitored are selected as BFD RSs to be monitored according to the sorting result of each CORESET. It needs to be ensured that the preset number of candidate CSI RSs to be monitored include CSI RSs associated with the activated TCI states in at least two CORESETs to be monitored, and at least two CORESETs to be monitored include at least one CORESET with SFN transmission mode. For example, the determined CORESETs to be monitored are CORESET 0, CORESET 1, and CORESET 2. The CSI RSs associated with the activated TCI state in CORESET 0 are CSI RS 0 and CSI RS1, the CSI RSs associated with the activated TCI state in CORESET 1 are CSI RS2 and CSI RS3, and the CSI RS associated with the activated TCI state in CORESET 2 is CSI RS 4. The preset number is 4, and CSI RS0, CSI RS 1, CSI RS2 and CSI RS 3 are used as BFD RSs to be monitored.

[0124] That is, in the present disclosure, the terminal side performs the following steps:

[0125] 2) Step 2: The terminal device can dynamically determine more BFD RSs in the BFD RS set group based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0126] a) Step 2-1: First, the UE determines the CORESET associated with the BFD RS according to the priority rules of all CORESETs that can be monitored within the current bandwidth and the maximum CORESET quantity limit X. Specifically, the following methods are included:

[0127] If there are A CORESETs in the current bandwidth that use SFN transmission, then the A CORESETs that use SFN transmission will be prioritized. There are two specific cases:

[0128] 1. If A<=X, select A CORESETs and continue to select XA CORESETs with single-point transmission mode.

[0129] 2. If A>X, select the first X CORESETs among A CORESETs based on the index value.

[0130] b) Step 2-2: The UE determines Y BFD RSs by determining X CORESETs and / or the maximum BFD RS quantity limit Y. Specifically, there are two ways:

[0131] Method 1: The UE may use B periodic CSI RS resources associated with the QCL in the TCI state in X CORESETs as all BFD RSs.

[0132] Method 2: The UE can use B periodic CSI RSs associated with QCL in TCI state in X CORESETs as candidate CSI RSs, and then select Y candidate CSI RSs as BFD RSs according to the sorting results of each CORESET. There are two specific cases:

[0133] 1. If B<=Y, there is no need to continue determining other BFD RSs.

[0134] 2. If B>Y, the first Y CSI RSs among the B CSI RSs are selected as BFD RSs.

[0135] In order to make the monitored beam quality better reflect the beam quality of the PDCCH, in the present disclosure, the beam quality monitoring based on each BFD RS to be monitored includes:

[0136] The beam quality of each BFD RS to be monitored is calculated separately. If each determined beam quality satisfies a preset beam failure condition, a beam failure event is triggered; or

[0137] The two BFD RSs to be monitored that are associated with the same CORESET are taken as a BFD RS group. The beam quality of the two BFD RSs to be monitored in the BFD RS group is jointly calculated, and the beam quality of the BFD RS in the non-BFD RS group is calculated separately. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered.

[0138] In the present disclosure, beam quality monitoring based on each BFD RS to be monitored includes the following methods:

[0139] Method 1: Calculate the beam quality of each BFD RS to be monitored separately, and for each determined beam quality, determine whether the beam quality meets the preset beam failure condition. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered.

[0140] Method 2: The two BFD RSs to be monitored that are associated with the same CORESET are used as a BFD RS group, and then the beam quality of the BFD RS group is calculated jointly, and the beam quality of the BFD RS in the non-BFD RS group is calculated separately. Finally, for each determined beam quality, it is determined whether the beam quality meets the preset beam failure condition. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered.

[0141] Because for two BFD RSs to be monitored that are associated with the same CORESET, jointly calculating the beam quality of the BFD RS group can more accurately reflect the beam quality of the CORESET. Compared with the method of separately calculating the beam quality of all BFD RSs to be monitored, it can better reflect the beam quality of the PDCCH.

[0142] The separately calculating the beam quality of each BFD RS to be monitored includes:

[0143] For each BFD RS to be monitored, a measurement output value corresponding to the measurement scale of the BFD RS to be monitored is determined, a block error rate BLER value is determined according to the measurement output value, and the BLER value is used as the beam quality of the BFD RS to be monitored.

[0144] Each BFD RS to be monitored is received and channel estimated and measured, and the measurement output is performed according to the measurement scale to obtain the measurement output value corresponding to the measurement scale, where the measurement scale can be any one of the signal-to-interference-plus-noise ratio SINR, the signal-to-noise ratio SNR, and the reference signal received power RSRP. After determining the measurement output value corresponding to the measurement scale, the block error rate BLER value is determined according to the measurement output value, and the BLER value is used as the beam quality of the BFD RS to be monitored. If each determined BLER value is greater than the preset BLER threshold, a beam failure event is triggered.

[0145] The jointly calculating beam qualities of two BFD RSs to be monitored in the BFD RS group includes:

[0146] The measurement output values ​​corresponding to the measurement scales of two BFD RSs to be monitored in the BFD RS group are respectively determined, the two measurement output values ​​are superimposed, and a BLER value is determined according to the superimposed measurement output value, and the BLER value is used as the beam quality of the BFD RS group.

[0147] Perform channel estimation measurement on the two BFD RSs to be monitored in the BFD RS group respectively, and perform measurement output according to the measurement scale to obtain the measurement output values ​​corresponding to the two BFD RSs to be monitored. Superimpose the measurement output values ​​corresponding to the two BFD RSs to be monitored in the group to obtain a new measurement output value, determine the BLER value according to the new measurement output value, and use the BLER value as the beam quality of the BFD RS group. Superimposing the measurement output values ​​corresponding to the two BFD RSs to be monitored in the group can be directly adding the measurement output values ​​corresponding to the two BFD RSs to be monitored; or assigning weight values ​​to the two BFD RSs to be monitored respectively, and performing weighted calculation according to the measurement output values ​​and weight values ​​corresponding to the two BFDRSs to be monitored to obtain a new measurement output value.

[0148] That is, in the present disclosure, the terminal side performs the following steps:

[0149] 3) Step 3: After the terminal device determines the BFD RS in the BFD RS group, it can measure the beam quality of all BFD RSs and threshold comparison in the following different ways to determine whether the beam fails at the current moment, and indicate a beam failure event to the high-level of the terminal device.

[0150] a) Method 1: If there are two BFD RSs associated with the same CORESET in the BFD RSs determined by the current terminal device, the terminal device can jointly calculate the beam quality of the two BFD RSs and compare it with the defined threshold, and the other BFD RSs calculate the beam quality separately. If all the calculated beam qualities are greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0151] b) Mode 2: If there are no two BFD RSs associated with the same CORESET in the BFD RSs determined by the current terminal device, the terminal can calculate the beam quality of each BFD RS separately and compare it with the defined threshold. If the beam quality of all BFD RSs is greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0152] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0153] The preferred embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0154] The present disclosure proposes a beam quality monitoring method. When PDCCH is downlinked from different transmission points in SFN transmission mode, the terminal device can monitor the transmission beam quality of each transmission point and the beam quality of more CORESETs, thereby solving the problem of poor communication performance of the beam quality monitoring method in the related art.

[0155] If the terminal device UE does not receive the RRC configuration on the network device side, the UE can dynamically determine more BFD RSs in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit.

[0156] First, the UE may determine the CORESET associated with the BFD RS through different priority rules and / or the maximum CORESET quantity limit; then the UE may dynamically determine the BFD RS through the determined CORESET and / or the maximum BFD RS quantity limit.

[0157] After the terminal device determines more BFD RSs in the BFD RS group, it can measure the beam quality of all BFD RSs and threshold comparison through the following different situations to determine whether the beam fails at the current moment, and indicate a beam failure event to the high-level of the terminal device. When the number of beam failures reaches a certain number within a certain period of time, it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0158] Case 1: If there are two BFD RSs in the BFD RSs determined by the current terminal that are associated with two TCI states of the same CORESET, the terminal device can jointly calculate the beam quality of the two BFD RSs and compare it with the defined threshold, and the other BFD RSs calculate the beam quality separately. If all the calculated beam qualities are greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0159] Case 2: If there are no two BFD RSs associated with the same CORESET in the BFD RSs determined by the current terminal device, the terminal device can calculate the beam quality of each BFD RS separately and compare it with the defined threshold. If all calculated beam qualities are greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0160] Embodiment 1 (case 1 in step 1 on the terminal side + step 2-2 method 1 + step 3 method 1 / 2):

[0161] In Example 1, Figure 4As shown, it is assumed that the network device side configures 3 CORESETs in each unit frequency band for the terminal device, of which 2 CORESETs are activated by MAC-CE with two TCI states, and each TCI state is associated with one QCL-typeA type information and one QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific process is as follows:

[0162] Network device side:

[0163] 1) Step 1: The network device side sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH SFN transmission mode configuration information, 32 TCI configuration information of each CORESET, etc. The network device side configures 3 CORESETs in each unit frequency band for the terminal device.

[0164] 2) Step 2: The network device side can activate 2 TCI state configuration information from the 32 TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific configuration is as follows Figure 4 shown.

[0165] 3) Step 3: The network device side sends PDCCH to the terminal through the TCI state activated by MAC-CE.

[0166] Terminal side:

[0167] 1) Step 1: The terminal device determines the TCI configuration information of each CORESET that can be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. The configuration transmission method of each CORESET is as follows:

[0168] a) CORESET 0: If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0169] b) CORESET 1: If the RRC configuration information contains SFN configuration information for PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET to be in SFN transmission mode.

[0170] c) CORESET 2: If the RRC configuration information contains SFN configuration information for PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET to be in SFN transmission mode.

[0171] 2) Step 2: The terminal device can dynamically determine all BFD RSs in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0172] a) Step 2-1: First, if the maximum number of CORESETs associated with the BFD RS is limited to X=2, then all CORESETs that the UE can monitor within the current bandwidth are CORESET 0 and CORESET 1.

[0173] b) Step 2-2: After this step, the maximum number of BFD RSs does not need to be limited by method 1, that is, the UE directly determines Y BFD RSs through the determined 2 CORESETs. Figure 4 CSI RS 0, CSI RS1, CSI RS2.

[0174] 3) Step 3: After the terminal device determines the BFD RS in the BFD RS group, it can measure the beam quality of all BFD RSs and threshold comparison in the following different ways to determine whether the beam fails at the current moment, and indicate a beam failure event to the high-level of the terminal device.

[0175] a) Mode 1: At this time, the current CSI RS 0 and CSI RS1 are associated with two TCI states of the same CORESET. The terminal device can jointly calculate the beam quality of the two BFD RSs and derive a combined BLER and compare it with the defined threshold (10% BLER). The other BFD RSs calculate the beam quality separately. If all beam qualities are greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0176] b) Method 2: The terminal device directly calculates the beam quality of each CSI RS separately. Specifically, the BLER can be derived from the SINR of each reference signal and compared with the defined threshold (10% BLER). If the quality of all beams is greater than the threshold, a beam failure event is indicated to the terminal's upper layer.

[0177] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0178] Embodiment 2 (case 1 in step 1 on the terminal side + step 2-2 method 1 + step 3 method 1 / 2):

[0179] In Example 2, Figure 5 As shown, it is assumed that the network device side configures 3 CORESETs in each unit frequency band for the terminal device, of which 2 CORESETs are activated by MAC-CE with two TCI states, and each TCI state is associated with one QCL-typeA type information and one QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific process is as follows:

[0180] Network device side:

[0181] 1) Step 1: The network device side sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH SFN transmission mode configuration information, 32 TCI configuration information of each CORESET, etc. The network device side configures 3 CORESETs in each unit frequency band for the terminal device.

[0182] 2) Step 2: The network device side can activate 2 TCI state configuration information from the 32 TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific configuration is as follows Figure 5 shown.

[0183] 3) Step 3: The network device side sends PDCCH to the terminal device through the TCI state activated by MAC-CE.

[0184] Terminal side:

[0185] 1) Step 1: The terminal device determines the TCI configuration information of each CORESET that can be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. The configuration transmission method of each CORESET is as follows:

[0186] a) CORESET 0: If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0187] b) CORESET 1: If the RRC configuration information contains SFN configuration information for PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET to be in SFN transmission mode.

[0188] c) CORESET 2: If the RRC configuration information contains SFN configuration information for PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET to be in SFN transmission mode.

[0189] 2) Step 2: The terminal can dynamically determine the BFD RS in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0190] a) Step 2-1: First, if the maximum number of CORESETs associated with the BFD RS is limited to X=2, then all CORESETs that the UE can monitor within the current bandwidth are CORESET 1 and 2.

[0191] b) Step 2-2: After this step, the maximum number of BFD RSs does not need to be limited by method 1, that is, the UE directly determines Y BFD RSs through the determined 2 CORESETs. Figure 5 CSI RS1, CSI RS2, CSI RS 3, CSI RS 4.

[0192] 3) Step 3: After the terminal determines the BFD RS in the BFD RS group, it can measure the beam quality of all BFD RSs and threshold comparison in the following different ways to determine whether the beam fails at the current moment, and indicate a beam failure event to the terminal's upper layer.

[0193] a) Method 1: At this time, CSI RS1 and CSI RS2 are currently associated as two TCI states of the same CORESET, and CSI RS 3 and CSI RS 4 are associated as two TCI states of the same CORESET. The terminal can jointly calculate the beam quality of CSI RS1 and CSI RS2, CSI RS 3 and CSI RS 4, respectively, and derive a combined BLER and compare it with the defined threshold (10% BLER). If the beam quality of both groups of RSs is greater than the threshold, a beam failure event is indicated to the terminal's high layer.

[0194] b) Method 2: The terminal directly calculates the beam quality of each CSI RS. Specifically, the BLER can be derived from the SINR of each reference signal and compared with the defined threshold (10% BLER). If the quality of all beams is greater than the threshold, a beam failure event is indicated to the terminal's upper layer.

[0195] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0196] Embodiment 3 (case 1 in step 1 on the terminal side + step 2-2 method 2 + step 3 method 1 / 2):

[0197] In Example 3, Figure 6 As shown, it is assumed that the network device side configures 3 CORESETs in each unit frequency band for the terminal device, of which 2 CORESETs are activated by MAC-CE with two TCI states, and each TCI state is associated with one QCL-typeA type information and one QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific process is as follows:

[0198] Network device side:

[0199] 1) Step 1: The network device side sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH SFN transmission mode configuration information, 32 TCI configuration information of each CORESET, etc. The network device side configures 3 CORESETs in each unit frequency band for the terminal device.

[0200] 2) Step 2: The network device side can activate 2 TCI state configuration information from the 32 TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific configuration is as follows Figure 6 shown.

[0201] 3) Step 3: The network device side sends PDCCH to the terminal device through the TCI state activated by MAC-CE.

[0202] Terminal device side:

[0203] 1) Step 1: The terminal device determines the TCI configuration information of each CORESET that can be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. The configuration transmission method of each CORESET is as follows:

[0204] a) CORESET 0: If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0205] b) CORESET 1: If the RRC configuration information contains SFN configuration information for PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET to be in SFN transmission mode.

[0206] c) CORESET 2: If the RRC configuration information contains SFN configuration information for PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET to be in SFN transmission mode.

[0207] 2) Step 2: The terminal device can dynamically determine more BFD RSs in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0208] a) Step 2-1: First, if the maximum number of CORESETs associated with the BFD RS is limited to X=2, then all CORESETs that the UE can monitor within the current bandwidth are CORESET 0 and 1.

[0209] b) Step 2-2: Then, through the second method of this step, if the maximum limit of BFD RS Y=3, the UE passes the first 3 BFD RSs of the two CORESETs that have been determined. Figure 6 CSI RS 0, CSI RS1, CSI RS2.

[0210] 3) Step 3: After the terminal device determines the BFD RS in the BFD RS group, it can measure the beam quality of all BFD RSs and threshold comparison in the following different ways to determine whether the beam fails at the current moment, and indicate a beam failure event to the high-level of the terminal device.

[0211] a) Method 1: At this time, the current CSI RS1 and CSI RS2 are associated as two TCI states of the same CORESET. The terminal device can jointly calculate the beam quality of the two BFD RSs and derive a combined BLER and compare it with the defined threshold (10% BLER). If the jointly calculated BLER at this time is greater than the threshold, a beam failure event is indicated to the high-level layer of the terminal device.

[0212] b) Method 2: The terminal device directly calculates the beam quality of each CSI RS. Specifically, the BLER can be derived from the SINR of each reference signal and compared with the defined threshold (10% BLER). If the quality of all beams is greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0213] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0214] Embodiment 4 (case 1 in step 1 on the terminal side + step 2-2 method 2 + step 3 method 1 / 2):

[0215] In Example 4, Figure 7 As shown, it is assumed that the network device side configures 3 CORESETs in each unit frequency band for the terminal device, of which 2 CORESETs are activated by MAC-CE with two TCI states, and each TCI state is associated with one QCL-typeA type information and one QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific process is as follows:

[0216] Network device side:

[0217] 1) Step 1: The network device side sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH SFN transmission mode configuration information, 32 TCI configuration information of each CORESET, etc. The network device side configures 3 CORESETs in each unit frequency band for the terminal device.

[0218] 2) Step 2: The network device side can activate 2 TCI state configuration information from the 32 TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific configuration is as follows Figure 7 shown.

[0219] 3) Step 3: The network device side sends PDCCH to the terminal device through the TCI state activated by MAC-CE.

[0220] Terminal device side:

[0221] 1) Step 1: The terminal device determines the TCI configuration information of each CORESET that can be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. The configuration transmission method of each CORESET is as follows:

[0222] a) CORESET 0: If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0223] b) CORESET 1: If the RRC configuration information contains SFN configuration information for PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET to be in SFN transmission mode.

[0224] c) CORESET 2: If the RRC configuration information contains SFN configuration information for PDCCH, and MAC-CE activates two TCI states for the current CORESET, the UE may consider the current CORESET to be in SFN transmission mode.

[0225] 2) Step 2: The terminal device can dynamically determine more BFD RSs in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0226] a) Step 2-1: First, if the maximum number of CORESETs associated with the BFD RS is limited to X=2, then all CORESETs that the UE can monitor within the current bandwidth are CORESET 1 and 2.

[0227] b) Step 2-2: Then, through the second method of this step, if the maximum limit of BFD RS is Y=4, the UE passes the first 4 BFD RSs of the two CORESETs that have been determined. Figure 7 CSI RS1, CSI RS2, CSI RS 3, CSI RS 4.

[0228] 3) Step 3: After the terminal device determines the BFD RS in the BFD RS group, it can measure the beam quality of all BFD RSs and threshold comparison in the following different ways to determine whether the beam fails at the current moment, and indicate a beam failure event to the high-level of the terminal device.

[0229] a) Method 1: At this time, CSI RS1 and CSI RS2 are currently associated as two TCI states of the same CORESET, so the terminal device can jointly calculate the beam quality of the two BFD RSs and derive a combined BLER and compare it with the defined threshold (10% BLER). If the jointly calculated BLER at this time is greater than the threshold, a beam failure event is indicated to the higher layer of the terminal device. At this time, CSI RS 3 and CSI RS 4 are currently associated as two TCI states of the same CORESET, so the terminal device can jointly calculate the beam quality of the two BFD RSs and derive a combined BLER and compare it with the defined threshold (10% BLER). If the jointly calculated BLER at this time is greater than the threshold, a beam failure event is indicated to the higher layer of the terminal device.

[0230] b) Method 2: The terminal device directly calculates the beam quality of each CSI RS. Specifically, the BLER can be derived from the SINR of each reference signal and compared with the defined threshold (10% BLER). If the quality of all beams is greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0231] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0232] Embodiment 5 (case 2 / 3 in step 1 on the terminal side + step 2-2 method 1 + step 3 method 2):

[0233] In Example 5, Figure 8 As shown, it is assumed that the network device side configures 3 CORESETs in each unit frequency band for the terminal device, and all CORESETs are activated by MAC-CE with 1 TCI state, and each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific process is as follows:

[0234] Network device side:

[0235] 1) Step 1: The network device side sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH SFN transmission mode configuration information, 32 TCI configuration information of each CORESET, etc. The network device side configures 3 CORESETs in each unit frequency band for the terminal device.

[0236] 2) Step 2: The network device side can activate 1 TCI state configuration information from 32 TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific configuration is as follows Figure 8 shown.

[0237] 3) Step 3: The network device side sends PDCCH to the terminal device through the TCI state activated by MAC-CE.

[0238] Terminal device side:

[0239] 1) Step 1: The terminal device determines the TCI configuration information of each CORESET that can be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. The configuration transmission method of each CORESET is as follows:

[0240] CORESET 0 / 1 / 2: ​​If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0241] 2) Step 2: The terminal device can dynamically determine more BFD RSs in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0242] a) Step 2-1: First, if the maximum number of CORESETs associated with the BFD RS is limited to X=3, then all CORESETs that the UE can monitor within the current bandwidth are CORESET 0 / 1 / 2.

[0243] b) Step 2-2: After this step, the maximum limit of BFD RS is not required, that is, the UE directly determines Y BFD RSs through the determined 3 CORESETs. Figure 8 CSI RS 0, CSI RS1, CSI RS2.

[0244] 3) Step 3: After the terminal device determines the BFD RS in the BFD RS group, since there are currently no two BFD RSs associated with one CORESET, the terminal device directly calculates the beam quality of each CSI RS. Specifically, the BLER can be derived from the SINR of each reference signal and compared with the defined threshold (10% BLER). If the quality of all beams is greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0245] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0246] Embodiment 6 (case 2 / 3 in step 1 on the terminal side + method 1 of step 2-2 + method 1 / 2 of step 3):

[0247] In Example 6, Fig. 9 As shown, it is assumed that the network device side configures 3 CORESETs in each unit frequency band for the terminal device, and all CORESETs are activated by MAC-CE with 1 TCI state, and each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific process is as follows:

[0248] Network device side:

[0249] 1) Step 1: The network device side sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH SFN transmission mode configuration information, 32 TCI configuration information of each CORESET, etc. The network device side configures 3 CORESETs in each unit frequency band for the terminal device.

[0250] 2) Step 2: The network device side can activate 1 TCI state configuration information from 32 TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific configuration is as follows Fig. 9 shown.

[0251] 3) Step 3: The network device side sends PDCCH to the terminal device through the TCI state activated by MAC-CE.

[0252] Terminal device side:

[0253] 1) Step 1: The terminal device determines the TCI configuration information of each CORESET that can be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. The configuration transmission method of each CORESET is as follows:

[0254] CORESET 0 / 1 / 2: ​​If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0255] 2) Step 2: The terminal device can dynamically determine more BFD RSs in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0256] a) Step 2-1: First, if the maximum number of CORESETs associated with the BFD RS is limited to X=3, then all CORESETs that the UE can monitor within the current bandwidth are CORESET 0 / 1 / 2.

[0257] b) Step 2-2: After this step, the maximum limit of BFD RS is not required, that is, the UE directly determines Y BFD RSs through the determined 2 CORESETs. Fig. 9 CSI RS 0, CSI RS1, CSI RS2.

[0258] 3) Step 3: After the terminal device determines the BFD RS in the BFD RS group, since there are currently no two BFD RSs associated with one CORESET, the terminal device directly calculates the beam quality of each CSI RS. Specifically, the BLER can be derived from the SINR of each reference signal and compared with the defined threshold (10% BLER). If the quality of all beams is greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0259] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0260] Embodiment 7 (case 2 / 3 in step 1 on the terminal side + step 2-2 method 2 + step 3) method 1 / 2:

[0261] In Example 7, Fig.10As shown, it is assumed that the network device side configures 3 CORESETs in each unit frequency band for the terminal device, and all CORESETs are activated by MAC-CE with 1 TCI state, and each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific process is as follows:

[0262] Network device side:

[0263] 1) Step 1: The network device side sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH SFN transmission mode configuration information, 32 TCI configuration information of each CORESET, etc. The network device side configures 3 CORESETs in each unit frequency band for the terminal device.

[0264] 2) Step 2: The network device side can activate 1 TCI state configuration information from 32 TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific configuration is as follows Fig.10 shown.

[0265] 3) Step 3: The network device side sends PDCCH to the terminal device through the TCI state activated by MAC-CE.

[0266] Terminal device side:

[0267] 1) Step 1: The terminal device determines the TCI configuration information of each CORESET that can be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. The configuration transmission method of each CORESET is as follows:

[0268] CORESET 0 / 1 / 2: ​​If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0269] 2) Step 2: The terminal device can dynamically determine more BFD RSs in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0270] a) Step 2-1: First, if the maximum number of CORESETs associated with the BFD RS is limited to X=3, then all CORESETs that the UE can monitor within the current bandwidth are CORESET 0 / 1 / 2.

[0271] b) Step 2-2: Then, through the second method of this step, if the maximum limit of BFD RS Y=2, the UE passes the first two BFD RSs of the two CORESETs that have been determined. Fig.10 CSI RS 0, CSI RS1 in.

[0272] 3) Step 3: After the terminal device determines the BFD RS in the BFD RS group, since there are currently no two BFD RSs associated with one CORESET, the terminal device directly calculates the beam quality of each CSI RS. Specifically, the BLER can be derived from the SINR of each reference signal and compared with the defined threshold (10% BLER). If the quality of all beams is greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0273] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0274] Embodiment 8 (case 2 / 3 in step 1 on the terminal side + step 2-2 method 2 + step 3 method 1 / 2):

[0275] In Example 8, Fig.11 As shown, it is assumed that the network device side configures 3 CORESETs in each unit frequency band for the terminal device, and all CORESETs are activated by MAC-CE with 1 TCI state, and each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific process is as follows:

[0276] Network device side:

[0277] 1) Step 1: The network device side sends the RRC configuration information of PDCCH to the terminal device, including the PDCCH SFN transmission mode configuration information, 32 TCI configuration information of each CORESET, etc. The network device side configures 3 CORESETs in each unit frequency band for the terminal device.

[0278] 2) Step 2: The network device side can activate 1 TCI state configuration information from 32 TCI state configuration information in the RRC configuration through MAC-CE information, where each TCI state is associated with a QCL-typeA type information and a QCL-typeD type information, where the target QCL reference signal of the QCL-typeD type is a periodic CSI RS. The specific configuration is as follows Fig.11 shown.

[0279] 3) Step 3: The network device side sends PDCCH to the terminal device through the TCI state activated by MAC-CE.

[0280] Terminal device side:

[0281] 1) Step 1: The terminal device determines the TCI configuration information of each CORESET that can be monitored by receiving the RRC configuration information and MAC-CE activation information sent by the network device side. The configuration transmission method of each CORESET is as follows:

[0282] CORESET 0 / 1 / 2: ​​If the RRC configuration information contains the SFN configuration information of the PDCCH, and the MAC-CE activates one TCI state for the current CORESET, the UE may consider the current CORESET to be in single-point transmission mode.

[0283] 2) Step 2: The terminal device can dynamically determine more BFD RSs in the BFD RS set based on the monitored TCI status of the CORESET, priority rules, and the maximum CORESET and / or BFD RS quantity limit:

[0284] a) Step 2-1: First, if the maximum number of CORESETs associated with the BFD RS is limited to X=3, then all CORESETs that the UE can monitor within the current bandwidth are CORESET 0 / 1 / 2.

[0285] b) Step 2-2: Then, through the second method of this step, if the maximum limit of BFD RS Y=2, the UE passes the first two BFD RSs of the two CORESETs that have been determined. Fig.11 CSI RS 0, CSI RS1 in.

[0286] 3) Step 3: After the terminal device determines the BFD RS in the BFD RS group, since there are currently no two BFD RSs associated with one CORESET, the terminal device directly calculates the beam quality of each CSI RS. Specifically, the BLER can be derived from the SINR of each reference signal and compared with the defined threshold (10% BLER). If the quality of all beams is greater than the threshold, a beam failure event is indicated to the upper layer of the terminal device.

[0287] 4) Step 4: When the number of beam failures reaches a certain number within a certain period of time (obtained by RRC configuration), it will trigger the terminal device to send a beam failure recovery request to the network device side.

[0288] The present disclosure proposes a beam quality monitoring method. When PDCCH is downlinked from different transmission points in SFN transmission mode, UE can dynamically determine more BFD RSs according to the monitored TCI status of CORESET, priority rules and maximum CORESET and / or BFDRS quantity limit, thereby monitoring the transmission beam quality of each transmission point and the beam quality of more CORESETs, solving the problem of poor communication performance of beam failure monitoring methods in the prior art.

[0289] Fig.12 This is a schematic diagram of the structure of a beam quality monitoring device provided by the present disclosure, the device comprising:

[0290] The receiving unit 121 is configured to receive radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by the network device side, and determine the index value of each control resource set CORESET and the transmission configuration indication TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information;

[0291] A first determining unit 122 is configured to determine a transmission mode of each CORESET according to a TCI state activated in each CORESET, wherein the transmission mode includes a single frequency network (SFN) transmission mode and a single point transmission mode;

[0292] A second determining unit 123 is configured to select at least two CORESETs as CORESETs to be monitored, wherein the CORESETs to be detected include CORESETs in SFN transmission mode;

[0293] The third determining unit 124 is configured to determine each beam failure detection reference signal BFD RS to be monitored according to the periodic channel state information reference signal CSI RS associated with the activated TCI state in each CORESET to be monitored.

[0294] The monitoring unit 125 is configured to perform beam quality monitoring based on each BFD RS to be monitored.

[0295] The second determining unit 123 is specifically configured to sort each of the CORESETs according to a preset priority rule, and select at least two CORESETs as the CORESETs to be monitored according to the sorting result.

[0296] The second determination unit 123 is specifically used to sort each CORESET according to the index value of each CORESET; wherein, the priority of the CORESET with a smaller index value is higher than that of the CORESET with a larger index value; or sort each CORESET according to the transmission mode of each CORESET; wherein, the priority of the CORESET of the SFN transmission mode is higher than that of the CORESET of the single-point transmission mode; or sort each CORESET according to the transmission mode and index value of each CORESET; wherein, the priority of the transmission mode is higher than the priority of the index value, the priority of the CORESET of the SFN transmission mode is higher than that of the CORESET of the single-point transmission mode, and the priority of the CORESET of the smaller index value is higher than that of the CORESET of the larger index value.

[0297] The first determination unit 122 is specifically used to determine, for each CORESET, whether there is SFN configuration information of the CORESET in the RRC configuration information; if the SFN configuration information of the CORESET exists in the RRC configuration information, and it is determined that two TCI states are activated in the CORESET according to the MAC-CE activation information, it is determined that the transmission mode of the CORESET is the SFN transmission mode; if the SFN configuration information of the CORESET exists in the RRC configuration information, and it is determined that one TCI state of the CORESET is activated according to the MAC-CE activation information, it is determined that the transmission mode of the CORESET is a single-point transmission mode; if the SFN configuration information of the CORESET does not exist in the RRC configuration information, and it is determined that one TCI state of the CORESET is activated according to the MAC-CE activation information, it is determined that the transmission mode of the CORESET is a single-point transmission mode.

[0298] The third determination unit 124 is specifically configured to use all CSI RSs associated with the TCI state activated in each CORESET to be monitored as each BFD RS to be monitored; or use all CSI RSs associated with the TCI state activated in each CORESET to be monitored as candidate CSI RSs to be monitored, and select a preset number of candidate CSI RSs to be monitored as BFD RSs to be monitored according to the sorting result of each CORESET, wherein the preset number of candidate CSI RSs to be monitored include CSI RSs associated with the TCI state activated in at least two CORESETs to be monitored, and the at least two CORESETs to be monitored include at least one CORESET of SFN transmission mode.

[0299] The monitoring unit 125 is specifically used to separately calculate the beam quality of each BFD RS to be monitored. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered; or two BFD RSs to be monitored that are associated with the same CORESET are used as a BFD RS group, and the beam quality of the two BFD RSs to be monitored in the BFD RS group are jointly calculated, and the beam quality of the BFD RS in the non-BFD RS group is separately calculated. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered.

[0300] The monitoring unit 125 is specifically configured to determine, for each BFD RS to be monitored, a measurement output value corresponding to the measurement scale of the BFDRS to be monitored, determine a block error rate BLER value according to the measurement output value, and use the BLER value as the beam quality of the BFD RS to be monitored.

[0301] The monitoring unit 125 is specifically used to respectively determine the measurement output values ​​corresponding to the measurement scales of the two BFD RSs to be monitored in the BFD RS group, superimpose the two measurement output values, and determine the BLER value according to the superimposed measurement output value, and use the BLER value as the beam quality of the BFD RS group.

[0302] Based on the same inventive concept, refer to Fig.13 As shown, in an embodiment of the present disclosure, a terminal device is provided, comprising at least:

[0303] A memory 131, used for storing executable instructions;

[0304] The processor 132 is used to read the program in the memory 131 and execute the following process:

[0305] Receiving radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by the network device side, and determining the index value of each control resource set CORESET and the transmission configuration indication TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information;

[0306] Determining a transmission mode of each CORESET according to a TCI state activated in each CORESET, wherein the transmission mode includes a single frequency network (SFN) transmission mode and a single point transmission mode;

[0307] Selecting at least two CORESETs as CORESETs to be monitored, wherein the CORESETs to be detected include a CORESET in SFN transmission mode;

[0308] Determine each beam failure detection reference signal BFD RS to be monitored according to a periodic channel state information reference signal CSI RS associated with an activated TCI state in each CORESET to be monitored;

[0309] Beam quality monitoring is performed based on each BFD RS to be monitored.

[0310] Among them, Fig.13 As shown, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 132 and various circuits of memory represented by memory 131 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface may also be an interface capable of externally connecting or internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0311] The processor 132 is responsible for managing the bus architecture and general processing, and the memory 131 can store data used by the processor 132 when performing operations.

[0312] Based on the same inventive concept, an embodiment of the present disclosure provides a computer-readable storage medium. When instructions in the computer-readable storage medium are executed by a processor, the processor is enabled to execute any one of the methods executed by the terminal device in the above-mentioned embodiments.

[0313] In summary, in the embodiment of the present disclosure, the terminal device determines the index value of each CORESET and the TCI state activated in each CORESET according to the RRC configuration information and the MAC-CE activation information, and determines the transmission mode of each CORESET according to the TCI state activated in each CORESET. At least two CORESETs are selected as the CORESETs to be monitored, wherein the CORESETs to be detected include the CORESETs of the SFN transmission mode. Finally, the BFD RS to be monitored is determined according to the CSI RS associated with the TCI state activated in the CORESET to be detected, and the beam quality is monitored based on each BFD RS to be monitored. The present disclosure monitors the beam quality of at least two CORESETs, and the monitored CORESETs include the CORESETs of the SFN transmission mode. Because the CSI RSs of the two transmission points are associated in the TCI state activated in the CORESET of the SFN transmission mode. Therefore, the present disclosure can monitor the beam quality of the two transmission points. The present disclosure monitors the beam quality of at least two CORESETs and two transmission points, which solves the problem that the beam quality of the PDCCH cannot be accurately reflected in the related art.

[0314] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0315] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0316] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0317] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0318] Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Claims

1. A beam quality monitoring method, characterized in that: The method comprises: Receiving radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by the network device side, and determining an index value of a control resource set CORESET and a transmission configuration indication TCI state activated for the CORESET according to the RRC configuration information and the MAC-CE activation information; Determining a transmission mode corresponding to the CORESET according to the number of TCI states activated for the CORESET; Select the CORESET to be monitored; Determine a beam failure detection reference signal BFD RS to be monitored according to a periodic channel state information reference signal CSIRS associated with a TCI state activated for the CORESET to be monitored; Beam quality monitoring is performed based on the BFD RS to be monitored.

2. The method according to claim 1, characterized in that The selection of the CORESET to be monitored includes: The CORESETs are sorted according to a preset priority rule, and the CORESET to be monitored is selected according to the sorting result.

3. The method according to claim 2, characterized in that The sorting of the CORESET according to the preset priority rule includes: Sort the CORESETs according to the index values ​​of the CORESETs; wherein the CORESETs with smaller index values ​​have higher priority than the CORESETs with larger index values; or The CORESETs are sorted according to the transmission modes corresponding to the CORESETs; wherein the priority of the CORESETs corresponding to the single-frequency network SFN transmission mode is higher than that of the CORESETs corresponding to the single-point transmission mode; or The CORESET is sorted according to the transmission mode and index value of the CORESET; wherein the priority of the transmission mode is higher than the priority of the index value, the priority of the CORESET corresponding to the SFN transmission mode is higher than the priority of the CORESET corresponding to the single-point transmission mode, and the priority of the CORESET with a small index value is higher than the CORESET with a large index value.

4. The method according to claim 1, characterized in that: Determining the transmission mode corresponding to the CORESET according to the number of TCI states activated for the CORESET includes: For the CORESET, determining whether the RRC configuration information contains SFN configuration information of the CORESET; If the RRC configuration information contains SFN configuration information of the CORESET, and it is determined that two TCI states are activated for the CORESET according to the MAC-CE activation information, it is determined that the transmission mode corresponding to the CORESET is the SFN transmission mode; If the RRC configuration information contains SFN configuration information of the CORESET, and a TCI state is determined to be activated for the CORESET according to the MAC-CE activation information, determining that a transmission mode corresponding to the CORESET is a single-point transmission mode; If the SFN configuration information of the CORESET does not exist in the RRC configuration information, and it is determined that a TCI state is activated for the CORESET according to the MAC-CE activation information, it is determined that the transmission mode corresponding to the CORESET is a single-point transmission mode.

5. The method according to claim 1, characterized in that The determining, according to the CSI RS associated with the TCI state activated by the CORESET to be monitored, the BFD RS to be monitored includes: All CSI RSs associated with the TCI states activated for the CORESET to be monitored are used as BFDRSs to be monitored; or All CSI RSs associated with the TCI state activated for the CORESET to be monitored are used as candidate CSIRS to be monitored, and a preset number of candidate CSI RSs to be monitored are selected as BFD RSs to be monitored according to the sorting result of the CORESET, wherein the preset number of candidate CSI RSs to be monitored include CSIRS associated with the TCI state activated for the CORESET to be monitored, and the CORESET to be monitored includes at least one CORESET corresponding to the SFN transmission mode.

6. The method according to claim 1, characterized in that The beam quality monitoring based on the BFD RS to be monitored includes: Calculating the beam quality of the BFD RS to be monitored, and if each determined beam quality satisfies a preset beam failure condition, triggering a beam failure event; or The two BFD RSs to be monitored that are associated with the same CORESET are taken as a BFD RS group, and the beam quality of the two BFD RSs to be monitored in the BFD RS group is jointly calculated. The beam quality of the BFD RS in the non-BFD RS group is calculated. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered.

7. The method according to claim 6, characterized in that The calculating the beam quality of the BFD RS to be monitored includes: For the BFD RS to be monitored, a measurement output value corresponding to the measurement scale of the BFD RS to be monitored is determined, a block error rate BLER value is determined according to the measurement output value, and the BLER value is used as the beam quality of the BFD RS to be monitored.

8. The method according to claim 6, characterized in that The jointly calculating beam qualities of two BFD RSs to be monitored in the BFD RS group includes: The measurement output values ​​corresponding to the measurement scales of two BFD RSs to be monitored in the BFD RS group are respectively determined, the two measurement output values ​​are superimposed, and a BLER value is determined according to the superimposed measurement output value, and the BLER value is used as the beam quality of the BFD RS group.

9. A beam quality monitoring device, characterized in that: The device comprises: A receiving unit, configured to receive radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by a network device side, and determine an index value of a control resource set CORESET and a transmission configuration indication TCI state activated for the CORESET according to the RRC configuration information and the MAC-CE activation information; A first determining unit, configured to determine a transmission mode corresponding to the CORESET according to the number of TCI states activated for the CORESET; A second determination unit is used to select a CORESET to be monitored; A third determining unit is configured to determine a beam failure detection reference signal BFD RS to be monitored according to a periodic channel state information reference signal CSIRS associated with a TCI state activated for the CORESET to be monitored; A monitoring unit is used to perform beam quality monitoring based on the BFD RS to be monitored.

10. The device according to claim 9, characterized in that The second determining unit is specifically configured to sort the CORESETs according to a preset priority rule, and select the CORESET to be monitored according to the sorting result.

11. The device according to claim 10, characterized in that The second determination unit is specifically used to sort the CORESET according to the index value of the CORESET; wherein, the priority of the CORESET with a smaller index value is higher than that of the CORESET with a larger index value; or sort the CORESET according to the transmission mode corresponding to the CORESET; wherein, the priority of the CORESET corresponding to the SFN transmission mode is higher than that of the CORESET corresponding to the single-point transmission mode; or sort the CORESET according to the transmission mode and index value corresponding to the CORESET; wherein, the priority of the transmission mode is higher than the priority of the index value, the priority of the CORESET corresponding to the SFN transmission mode is higher than that of the CORESET corresponding to the single-point transmission mode, and the priority of the CORESET with a smaller index value is higher than that of the CORESET with a larger index value.

12. The device according to claim 9, characterized in that The first determination unit is specifically used to determine, for the CORESET, whether there is SFN configuration information of the CORESET in the RRC configuration information; if the SFN configuration information of the CORESET exists in the RRC configuration information, and it is determined according to the MAC-CE activation information that two TCI states are activated for the CORESET, it is determined that the transmission mode corresponding to the CORESET is the SFN transmission mode; if the SFN configuration information of the CORESET exists in the RRC configuration information, and it is determined according to the MAC-CE activation information that one TCI state is activated for the CORESET, it is determined that the transmission mode corresponding to the CORESET is the single-point transmission mode; if the SFN configuration information of the CORESET does not exist in the RRC configuration information, and it is determined according to the MAC-CE activation information that one TCI state is activated for the CORESET, it is determined that the transmission mode corresponding to the CORESET is the single-point transmission mode.

13. The device according to claim 9, characterized in that The third determination unit is specifically configured to use all CSI RSs associated with the TCI state activated for the CORESET to be monitored as the BFD RS to be monitored; or use all CSI RSs associated with the TCI state activated for the CORESET to be monitored as candidate CSI RSs to be monitored, and select a preset number of candidate CSI RSs to be monitored as the BFD RSs to be monitored according to the sorting result of the CORESET, wherein the preset number of candidate CSI RSs to be monitored include the CSI RS associated with the TCI state activated for the CORESET to be monitored, and the CORESET to be monitored includes at least one CORESET corresponding to the SFN transmission mode.

14. The device according to claim 9, characterized in that The monitoring unit is specifically used to calculate the beam quality of the BFD RS to be monitored. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered; or two BFD RSs to be monitored that are associated with the same CORESET are used as a BFD RS group, and the beam quality of the two BFD RSs to be monitored in the BFD RS group is jointly calculated, and the beam quality of the BFD RS of the non-BFD RS group is calculated. If each determined beam quality meets the preset beam failure condition, a beam failure event is triggered.

15. The device according to claim 14, characterized in that The monitoring unit is specifically used to determine, for the BFD RS to be monitored, a measurement output value corresponding to the measurement scale of the BFD RS to be monitored, determine a block error rate BLER value according to the measurement output value, and use the BLER value as the beam quality of the BFD RS to be monitored.

16. The device according to claim 14, characterized in that The monitoring unit is specifically used to respectively determine the measurement output values ​​corresponding to the measurement scales of the two BFD RSs to be monitored in the BFD RS group, superimpose the two measurement output values, and determine the BLER value according to the superimposed measurement output value, and use the BLER value as the beam quality of the BFD RS group.

17. A terminal device, characterized in that: The terminal device comprises: A memory for storing executable instructions; The processor is configured to read and execute the executable instructions stored in the memory to perform the following processes: Receiving radio resource control RRC configuration information and media access control unit MAC-CE activation information sent by the network device side, and determining an index value of a control resource set CORESET and a transmission configuration indication TCI state activated for the CORESET according to the RRC configuration information and the MAC-CE activation information; Determining a transmission mode corresponding to the CORESET according to the number of TCI states activated for the CORESET; Select the CORESET to be monitored; Determine a beam failure detection reference signal BFD RS to be monitored according to a periodic channel state information reference signal CSI RS associated with a TCI state activated for the CORESET to be monitored; Beam quality monitoring is performed based on the BFD RS to be monitored.

18. A computer-readable storage medium, characterized in that: When the instructions in the computer-readable storage medium are executed by a processor, the processor is enabled to perform the method according to any one of claims 1 to 8.

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