Beam management method and communication device using same

Abstract

Provided in the present application are a beam management method and a communication device using same. The beam management method comprises: acquiring a beam measurement reference signal from a base station; on the basis of the beam measurement reference signal, determining whether there is an event-triggered beam measurement report in a plurality of specific cells; and sending a resource scheduling request to the base station, wherein the resource scheduling request comprises an indication of event triggering situations of the plurality of specific cells.

Description

Beam management method and communication device applying the same TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of wireless communication, in particular to a beam management method, a communication device and a storage medium. BACKGROUND

[0002] Millimeter wave is a key technology in 5G communication, which has the advantage of abundant spectrum resources and can provide larger bandwidth to support higher data rates. However, millimeter wave also faces some challenges. First, the propagation distance of millimeter wave is relatively short, usually only a few hundred meters. Second, the signal of millimeter wave is easily affected by atmospheric absorption and rain attenuation, which may affect its performance in outdoor environments. In addition, the signal of millimeter wave is also easily blocked by buildings and other objects.

[0003] To overcome these challenges, beam management technology is proposed. Beam management is a technology that focuses wireless signals in a specific direction by controlling the phase and amplitude of an antenna array. This can significantly improve signal quality, enhance signal coverage, and reduce interference. In millimeter wave communication, due to the narrow beam width, precise beam alignment is required, which requires complex beam management strategies.

[0004] Beam management technology involves many processes. 5G has standardized beam configuration, beam measurement, beam reporting, beam indication and other processes in beam management technology. In existing standards, these processes are controlled by the base station. For example, beam reporting, i.e. UE sends the measurement information of the beam to the base station according to the reporting time and resource configured by the base station. If the reporting resource is configured very densely in time, it will cause collision and waste of uplink resources, thereby reducing system performance; if the reporting resource is configured very sparsely in time, it will cause the base station to be unable to learn the beam quality in time, thereby reducing system performance.

[0005] Since the UE can more easily and timely know the beam quality, UE-initiated / event-driven (hereinafter referred to as "event-driven" or "event-triggered") beam management is proposed to reduce beam reporting overhead or beam update latency.

[0006] SUMMARY

[0007] Embodiments of the present application provide a beam management method, a communication device and a storage medium to solve the problems in the prior art.

[0008] In one aspect, the present application provides a beam management method, which is performed by a user equipment (UE). The method comprises: obtaining, from a base station, a beam measurement reference signal; determining, according to the beam measurement reference signal, whether there is an event-triggered beam measurement report in a plurality of specific cells; and sending, to the base station, a resource scheduling request, wherein the resource scheduling request comprises an indication of an event-triggering condition of the plurality of specific cells.

[0009] In another aspect, the present application provides a beam management method, which is performed by a base station. The method comprises: sending, to a user equipment (UE), a beam measurement reference signal, wherein the beam measurement reference signal is used by the UE to determine whether there is an event-triggered beam measurement report in a plurality of specific cells; and receiving, from the UE, a resource scheduling request, wherein the resource scheduling request comprises an indication of an event-triggering condition of the plurality of specific cells.

[0010] In another aspect, the present application provides a communication device. The communication device comprises a processor and a memory, wherein the memory is configured to store program instructions, which, when executed by the processor, implement any of the above methods.

[0011] In another aspect, the present application provides a readable storage medium, which is configured to store program instructions, which, when executed by a processor, implement any of the above methods. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which are included to provide a further understanding of the present application, constitute a part of the specification and illustrate the illustrative embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0013] FIG. 1 shows a flowchart of a beam management method in the related art.

[0014] FIG. 2 shows two reporting modes of the beam management in the related art.

[0015] FIG. 3 shows a flowchart of a beam management method according to an embodiment of the present application.

[0016] FIG. 4 shows an example of a resource scheduling request comprising an indication of an event-triggering condition according to an embodiment of the present application.

[0017] FIG. 5 shows a flowchart of a beam management method according to another embodiment of the present application.

[0018] FIG. 6 shows an example of an event-triggered beam message according to an embodiment of the present application.

[0019] FIG. 7 shows an example of an event-triggered beam message according to another embodiment of the present application.

[0020] FIG. 8 is an example of an event triggered beam message according to another embodiment of the present application.

[0021] FIG. 9 is an example of an event triggered beam message according to another embodiment of the present application.

[0022] FIG. 10 is an example of an event triggered beam message according to another embodiment of the present application.

[0023] FIG. 11 is an example of an event triggered beam message according to another embodiment of the present application.

[0024] FIG. 12 shows a structure diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0026] It should be understood that the term "and / or" herein merely describes an association relationship of associated objects, and means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0027] FIG. 1 shows a flow diagram of beam management in association technology. As shown in FIG. 1, the beam management process in association technology mainly includes processes such as beam measurement, beam reporting, beam activation and beam indication. The main time delay is caused by beam measurement and beam measurement. The time delay of beam measurement is related to the amount of resources, which can be solved by configuring more intensive beam reporting resources, but this will cause waste of resources. The time delay of beam activation is fixed at 3 milliseconds.

[0028] In the process of standardizing event triggered beam management, 10 events are proposed, as follows.

[0029] Event-1: The quality of the current beam is lower than a certain threshold.

[0030] Event-2: The quality (such as L1-RSRP) of at least one new beam is better than the current beam by a threshold.

[0031] Event-3: The quality of the new beam is higher than a certain threshold.

[0032] Event-4: The quality of the current beam is below threshold 1 and at least one new beam has a quality above threshold 2.

[0033] Event-5: The absolute value of the difference between the quality of the current beam and at least one new beam is below a certain threshold.

[0034] Event-6: The current beam is not in the best K>1 beams (among the configured beams for measurement and reporting).

[0035] Event-7a: At least one new beam has a quality (e.g. L1-RSRP) better than the worst RS in the activated TCI state by a threshold.

[0036] Event-7b: At least one new beam has a quality (e.g. L1-RSRP) better than the best RS in the activated TCI state by a threshold.

[0037] Event-8: M>1 new beams have a quality (e.g. L1-RSRP) better than the current beam by a threshold.

[0038] Event-9: At least one new beam has a quality (e.g. L1-RSRP) better than a configured reference RS (which can be an SSB or a CSI-RS) by a threshold.

[0039] Event-2 is introduced to reduce the beam measurement latency or reporting overhead, so it is agreed first. When Event-2 occurs, it means there is a better beam than the current beam, so the good beam information is reported; when Event-2 does not occur, it means there is no better beam than the current beam, so there is no need to report. If the Transmission Configuration Indicator (TCI) state corresponding to the good beam is in the activated TCI list, the base station can immediately indicate this TCI state to the UE; if the TCI state corresponding to the good beam is not in the activated TCI state, the base station needs to activate this TCI state first, and then indicate this TCI state to the UE.

[0040] And there is a delay in activating the TCI state, so Event-7 is introduced to reduce the beam activation latency. When Event-7 occurs, it means there is a better beam than the Mth activated beam, so the good beam information is reported. When Event-7 does not occur, it means there is no better beam than the Mth activated beam, so there is no need to report. After receiving the report of Event-7, the base station can immediately update the activated TCI state.

[0041] The introduction of event-1 can avoid the UE entering the beam failure recovery procedure and quickly complete the beam refinement. Because entering the beam failure recovery procedure requires beam measurement and cannot transmit and receive data.

[0042] Figure 2 shows two reporting modes of beam management in related technologies: mode A and mode B. In the process of standardizing event-triggered beam management, two reporting modes of mode A and B are proposed and have been agreed. The selection of the two modes is configured by the base station according to the UE capability. Among them, reporting mode A has three steps: 1) first uplink signal transmission; 2) downlink signal transmission; and 3) second uplink signal transmission. Reporting mode B has two steps: 1) first uplink signal transmission; and 2) second uplink signal transmission. The first uplink signal in reporting mode A and B is a short format PUCCH, carrying 1 bit of notification information. The second uplink signal in reporting mode A and B carries at least beam index and quality information. The downlink signal in reporting mode A is PDCCH, carrying DCI scheduling the second uplink signal. The second uplink signal in reporting mode A is PUSCH scheduled by DCI.

[0043] If multiple carriers are considered, each UE can be configured and activated up to 31 secondary cells, plus the primary cell, totaling 32 cells; if multiple events are further considered, each UE can be configured up to 3 events. If these events of these cells occur at the same time, the existing SR can only provide event-triggering information, and only one positive SR can exist at the same time, and cannot provide event-triggering cell information and event information, which will make it difficult for the base station to determine the number of bits needed for subsequent scheduling, and also make it impossible for the base station to demodulate the subsequent second signal. Therefore, the existing SR needs to be improved.

[0044] To solve the above problems, the present application provides a beam management method. As shown in Figure 3, the method can include operations S101 to S103.

[0045] In S101, the base station sends a beam measurement reference signal to a user equipment (UE), and the UE acquires the beam measurement reference signal from the base station.

[0046] The beam measurement reference signal (Beam Measurement Reference Signal) is a special signal used for beam measurement in a wireless communication system. In beamforming technology, the base station transmits multiple beams in different directions to improve the coverage and quality of wireless signals. Beam measurement reference signals are used to evaluate the quality of each beam, including signal strength, channel quality, etc. User equipment (UE) can receive these reference signals and then select the optimal beam for communication based on the quality of these signals.

[0047] In S102, the UE determines whether there are event-triggered beam measurement reports in multiple specific cells.

[0048] Based on the received beam measurement reference signal, the UE can determine whether there are event-triggered beam measurement reports in multiple specific cells. The events that can trigger beam measurement reports and how to determine event triggering can be explained in the descriptions of Events-1 to-9 above. It should be understood that triggering events can also be other events.

[0049] The UE can record and statistically analyze events occurring in multiple cells, and then report the relevant information in subsequent processes.

[0050] The multiple specific cells refer to one of the following: all configured cells; cells among all configured cells that support event-driven beam reporting; all active cells; or cells among all active cells that support event-driven beam reporting. These specific cells can be considered as a set of cells for event-driven beam management, and the cells included in the set can be configured by higher-layer parameters and / or determined according to rules. A detailed description follows.

[0051] In one approach, the event-driven beam management cell set comprises a set of all cells configured with higher-layer parameters. All cells include primary and / or secondary cells. If the number of configured cells is... If there are 1, then the cell set contains 1. For each cell, the number of bits in the bitstream indicating whether an event has been triggered in the cell is [number]. The number of bits required to indicate the number of cells is

[0052] In one approach, the cell set for event-driven beam management comprises the set of cells that support event-driven beam reporting among all cells configured with higher-layer parameters. Cells supporting event-driven beam reporting are specified by higher-layer parameters or indicated by the Media Access Control (MAC) CE element. If the number of cells supporting event-driven beam reporting is... One, of which The cell set contains For each cell, the number of bits in the bitstream indicating whether an event has been triggered in the cell is [number]. The number of bits required to indicate the number of cells is

[0053] In one way, the event-driven beam management cell set is the set of activated cells among all the cells configured by the higher layer parameter. The activated cells include the primary cell and / or the activated secondary cell. The secondary cell is configured by the higher layer parameter or activated by the MAC CE. If the number of activated cells is , where , the cell set contains cells. The number of bits of the bitstream in bitmap form indicating whether the cell has an event trigger is The number of bits needed to indicate the number of cells is

[0054] In one way, the event-driven beam management cell set is the set of cells supporting event-driven beam reporting and activated among all the cells configured by the higher layer parameter. If the number of cells supporting event-driven beam reporting and activated is , where and , the cell set contains cells. The number of bits of the bitstream in bitmap form indicating whether the cell has an event trigger is The number of bits needed to indicate the number of cells is

[0055] In one way, the event-driven beam management cell set is the set of cells supporting event-driven beam reporting among the activated cells. The activated cells are the activated cells among all the cells configured by the higher layer parameter, in which the secondary cell is configured by the higher layer parameter or activated by the MAC CE. If the number of activated cells is , the number of cells supporting event-driven beam reporting is , the cell set contains cells. The number of bits of the bitstream in bitmap form indicating whether the cell has an event trigger is The number of bits needed to indicate the number of cells is

[0056] In one way, the event-driven beam management cell set is the list of cells supporting event-driven beam reporting displayed by the higher layer parameter. If the number of cells in the list is , where , the cell set contains cells. The number of bits of the bitstream in bitmap form indicating whether the cell has an event trigger is The number of bits needed to indicate the number of cells is

[0057] In one way, the event-driven beam management cell set is the set of activated cells in the high-layer parameter display configured support event-driven beam reporting cell list. If the activated cells in this cell list are wherein and The cell set contains The number of bits in bitmap form indicating whether the cell has an event triggered bit stream is The number of bits required to indicate the number of cells is

[0058] The UE can determine the cells supporting event-driven beam reporting and determine the number of bits required to indicate these cells according to any of the above ways by receiving relevant configurations or activation instructions, so as to record and report the events occurring in these cells.

[0059] In S103, the UE sends a resource scheduling request to the base station, and the base station receives the resource scheduling request. The resource scheduling request includes an indication of the event triggering status of the plurality of specific cells.

[0060] In the beam management process, the resource scheduling request not only involves traditional resource allocation, but also may involve beam selection and switching. With the introduction of 5G networks, beam management has become a key technology to improve signal coverage and network capacity, especially in scenarios using millimeter wave (mmWave) frequency bands. Therefore, the UE may need to request resources based on the current channel conditions and beam performance to ensure the quality and efficiency of its communication. The resource scheduling request (SR, Scheduling Request) is a signal or message sent by the user equipment (UE) to the base station (e.g., eNodeB / gNodeB) to indicate that it needs resource allocation for data transmission. In short, when the UE has uplink data to send but currently has no uplink resources allocated to it, it will send an SR to inform the network that it has data to send and request the network to allocate resources so that it can send data. In this embodiment, the UE can include an indication of the event triggering status of a plurality of specific cells in the SR.

[0061] In some embodiments, the resource scheduling request includes cell quantity information, and the cell quantity information is used to indicate the number of cells in the plurality of specific cells corresponding to the plurality of events that have triggered events.

[0062] The event-triggered indication SR contains the number of cells of several events that have triggered, and the number of bits occupied is determined according to the number of events and the number of cells in the event-driven beam management cell set. If there are multiple events, each event corresponds to a group of bits indicating the number of cells triggered by this event.

[0063] Figure 4 shows an example of the indication of the event triggered condition of a plurality of specific cells contained in the SR. In the example of Figure 4, every three bits form a group, which respectively correspond to the first event, the second event and the third event. The value "010" corresponding to the first event indicates that the number of cells with the first event is 2, the value "001" corresponding to the second event indicates that the number of cells with the second event is 1, and the value "001" corresponding to the third event indicates that the number of cells with the third event is 1.

[0064] Suppose the number of events is The number of cells in the cell set is The number of bits occupied by the indication of the event trigger in each group in the SR is The total number of bits occupied is The meaning of each code point of each group of bits is shown in Table 1.

[0065] Table 1

[0066] wherein

[0067] In particular, if the event is only one or other special cases, the SR for the indication of the event trigger only contains the number of cells with the event triggered, i.e. only contains the cell information but not the event information, and the number of bits occupied is determined according to the number of cells in the cell set of the event-driven beam management.

[0068] In some other embodiments, the resource scheduling request includes event quantity information, which is used to indicate the total number of events triggered in the plurality of specific cells.

[0069] The SR for the indication of the event trigger contains the sum of the number of triggered events of the cells in the cell set of the event-driven beam management, and the number of bits occupied is determined according to the number of events and the number of cells in the cell set of the event-driven beam management. Suppose the number of events is The number of cells in the cell set is The total number of bits occupied in the SR is The meaning of each code point is shown in Table 2.

[0070] Table 2

[0071] For example, if the indication value of a cell is "001", it indicates that the total number of events triggered by the cell is 1; if the indication value of a cell is "010", it indicates that the total number of events triggered by the cell is 2.

[0072] In this way, the UE can report the aforementioned determined event occurrence conditions in the specific cells to the base station in the SR.

[0073] According to the present embodiment, the UE can enhance the scheduling request so that it can carry the number information of carriers and events, thereby facilitating the base station to more accurately schedule subsequent resources to carry the event-driven beam information.

[0074] In the existing beam management technology (for example, mode A shown in FIG. 2), if the informing information in the first uplink signal only uses the existing resource scheduling request (SR), the following problems will be caused. First, if the physical uplink control channel (PUCCH) of multiple SRs in the same time slot overlaps with the PUCCH of other uplink control information (UCI), considering that the role of the existing SR is to request resources, the standard stipulates that only one positive SR is valid, then the base station cannot determine whether the SR is informing information. Secondly, if the PUCCH of the SR overlaps with the physical uplink shared channel PUSCH, even if it is a positive SR, these SRs will not be reported, and if there is an event triggered at this time, the base station cannot receive the informing information.

[0075] In this regard, the present application also considers the case where the resource scheduling request overlaps with the PUCCH of other uplink control information, or overlaps with the PUSCH.

[0076] In some embodiments, the resource scheduling request is multiplexed with other uplink control information on a physical uplink control channel PUCCH. For the SR multiplexed on the PUCCH of the event-driven beam reporting, there are the following methods.

[0077] Method one

[0078] If the PUCCH of the SR indicating the event trigger does not overlap with the PUCCH of other UCI, and there is no event trigger in any cell, the UE will not send the SR indicating the event trigger.

[0079] If the PUCCH of the SR indicating the event trigger does not overlap with the PUCCH of other UCI, and there is an event trigger in one of the cells, the UE will send the SR indicating the event trigger alone, which indicates that the number of cells with event trigger is greater than zero.

[0080] If the PUCCH of the SR indicating the event trigger overlaps with the PUCCH of other UCI, the other UCI does not contain the original SR, and there is no event trigger in any cell, the UE will send the SR indicating the event trigger, which indicates that the number of cells with event trigger is zero, and it is multiplexed with other UCI on a certain PUCCH.

[0081] If the PUCCH of the event-triggered indicated SR overlaps with the PUCCH of other UCI, the other UCI does not contain the original SR, and one of the cells has event-triggered, the UE transmits the event-triggered indicated SR, which indicates the number of cells with event-triggered is greater than zero, and which is multiplexed on a PUCCH with other UCI.

[0082] That is, when the event-triggered indicated SR is multiplexed on a PUCCH, if the other UCI does not contain the original SR, the number of bits occupied is the same as when it is transmitted alone. If none of the cells has event-triggered, the value of each bit in the SR is '0'; if one of the cells has event-triggered, the value of at least one bit in the SR is not '0'.

[0083] If the PUCCH of the event-triggered indicated SR overlaps with the PUCCH of other UCI, the other UCI contains the original positive SR, and none of the cells has event-triggered, the UE transmits the original positive SR without transmitting the event-triggered indicated SR, which is equivalent to implicitly indicating that the number of cells with event-triggered is zero, and which is multiplexed on a PUCCH with other UCI.

[0084] If the PUCCH of the event-triggered indicated SR overlaps with the PUCCH of other UCI, the other UCI contains the original positive SR, and one of the cells has event-triggered, the UE transmits the event-triggered indicated SR without transmitting the original positive SR, which indicates the number of cells with event-triggered is greater than zero, and which is multiplexed on a PUCCH with other UCI.

[0085] If the PUCCH of the event-triggered indicated SR overlaps with the PUCCH of other UCI, the other UCI contains the original negative SR, and none of the cells has event-triggered, the UE transmits the event-triggered indicated SR without transmitting the original negative SR, which indicates the number of cells with event-triggered is zero, and which is multiplexed on a PUCCH with other UCI; or the UE transmits the original negative SR without transmitting the event-triggered indicated SR.

[0086] If the PUCCH of the event-triggered indicated SR overlaps with the PUCCH of other UCI, the other UCI contains the original negative SR, and one of the cells has event-triggered, the UE transmits the event-triggered indicated SR without transmitting the original negative SR, which indicates the number of cells with event-triggered is greater than zero, and which is multiplexed on a PUCCH with other UCI.

[0087] It can be seen that the SR with indication of event trigger and the original SR are not sent at the same time. As long as there is event trigger in one of the cells, the UE will send the SR with indication of event trigger, regardless of the original SR is positive or negative, and will not send the original SR. If there is no event trigger in any of the cells and the original SR is positive, the UE will send the original SR and will not send the SR with indication of event trigger. If there is no event trigger in any of the cells and the original SR is negative, the UE will send one of them.

[0088] The method can be summarized as Table 3.

[0089] Table 3

[0090] In addition, when multiplexing on PUCCH, it is necessary to ensure that the two lengths are the same and need to be distinguished. In order to ensure the same length, the number of bits of the multiplexed SR is taken from the SR with indication of event trigger and the original SR, and if the number of bits of one of them is not enough, zero padding is performed. In order to distinguish, an SR identifier is added when multiplexing, which occupies 1 bit, and '0' represents that the multiplexed SR is the original SR, and '1' represents that the multiplexed SR is the SR with indication of event trigger. The SR identifier can be before the multiplexed SR or after the multiplexed SR.

[0091] The order of the UCI sequence is as follows: hybrid automatic repeat request (HARQ) (if any), SR identifier, SR with indication of event trigger or original SR, channel state information (CSI) bits (if any). The total number of bits (if any) + O CSI , wherein or wherein O UCI is the UCI sequence, O HARQ , O padding , O CSI respectively indicates HARQ, SR identifier, SR with indication of event trigger or original SR, zero padding and CSI information in the UCI sequence. The SR with indication of event trigger is after HARQ and before CSI, which means that the importance of the SR with indication of event trigger is lower than HARQ and higher than SR. The SR identifier is after HARQ and before the SR with indication of event trigger or original SR. This means that the priority of the SR with indication of event trigger is lower than HARQ and higher than the SR with indication of event trigger or original SR.

[0092] Method two

[0093] If the PUCCH of the event-triggered indicated SR does not overlap with other PUCCH or PUSCH, and there is no event trigger in any of the cells, the UE does not transmit the event-triggered indicated SR.

[0094] If the PUCCH of the event-triggered indicated SR does not overlap with other PUCCH or PUSCH, and there is event trigger in one of the cells, the UE transmits the event-triggered indicated SR separately, which indicates the number of cells with event trigger is greater than zero.

[0095] If the PUCCH of the event-triggered indicated SR overlaps with other PUCCH or PUSCH, and there is no event trigger in any of the cells, the UE transmits the event-triggered indicated SR, which indicates the number of cells with event trigger is zero, and is multiplexed on a certain PUCCH or PUSCH.

[0096] If the PUCCH of the event-triggered indicated SR overlaps with other PUCCH or PUSCH, and there is event trigger in one of the cells, the UE transmits the event-triggered indicated SR, which indicates the number of cells with event trigger is greater than zero, and is multiplexed on a certain PUCCH or PUSCH.

[0097] That is, when the event-triggered indicated SR is multiplexed on PUCCH, if other UCI does not contain the original SR, the number of bits occupied is the same as when it is transmitted separately. If there is no event trigger in any of the cells, the value of each bit in the SR is '0'; if there is event trigger in one of the cells, the value of at least one bit in the SR is not '0'.

[0098] The order of UCI sequence is as follows: HARQ (if any), event-triggered indicated SR, original SR (if any), CSI bits (if any). The total number of bits wherein indicate the bit positions of the event-triggered indicated SR and the original SR (legacy SR) in the UCI sequence respectively. The event-triggered indicated SR is after HARQ and before the original SR, which means that the priority of the event-triggered indicated SR is lower than HARQ and higher than the original SR.

[0099] Method three

[0100] In particular, if the amount of uplink data is small, the SR identifier can also not be increased. When the event-triggered indicated SR and the original SR are multiplexed on PUCCH, only the event-triggered indicated SR is transmitted. Data can be carried on the PUSCH of the event-driven beam information.

[0101] The order of UCI sequence: HARQ (if any), event-triggered indication SR, CSI bits (if any). Total bits Event-triggered indication SR is after HARQ, before CSI, which means the priority of event-triggered indication SR is lower than HARQ, higher than CSI.

[0102] In some other embodiments, the resource scheduling request is multiplexed on a physical uplink shared channel (PUSCH). The details are as follows.

[0103] If the PUCCH of event-triggered indication SR does not overlap with PUSCH, and there is no event trigger in any cell, the UE will not send event-triggered indication SR.

[0104] If the PUCCH of event-triggered indication SR does not overlap with PUSCH, and there is an event trigger in one of the cells, the UE will send event-triggered indication SR alone, which indicates the number of cells with event triggers is greater than zero.

[0105] If the PUCCH of event-triggered indication SR overlaps with PUSCH, and there is no event trigger in any cell, the UE will send event-triggered indication SR, which indicates the number of cells with event triggers is zero, and it is multiplexed on PUSCH.

[0106] If the PUCCH of event-triggered indication SR overlaps with PUSCH, and there is an event trigger in one of the cells, the UE will send event-triggered indication SR, which indicates the number of cells with event triggers is greater than zero, and it is multiplexed on PUSCH.

[0107] The above several cases can be summarized as Table 4.

[0108] Table 4

[0109] If multiplexed on PUSCH, the resource reservation method and mapping method of event-triggered indication SR need to be specified. There are several methods.

[0110] Method 1

[0111] The resource reservation order and mapping order on PUSCH are as follows: 1) HARQ and event-triggered indication SR, 2) other information. Other information includes original CSI, event-driven beam information and / or data. This means that event-triggered indication SR and HARQ are encoded together, and the priority of event-triggered indication SR is lower than HARQ and higher than other information.

[0112] Specifically, the bits of the event-triggered indicated SR are concatenated after the bits of the HARQ, and CRC bits are added after the bits of the event-triggered indicated SR. The number of the CRC bits is determined by the total number of the bits of the event-triggered indicated SR and the HARQ. The reserved resources of the event-triggered indicated SR and the HARQ are calculated first, which are determined according to the total number of the bits of the event-triggered indicated SR, the HARQ and the CRC, and a high layer parameter configured β offset. When mapped onto the PUSCH, the event-triggered indicated SR and the HARQ are mapped starting from the resources of the first symbol after the first DMRS of the PUSCH.

[0113] In particular, if the CG-UCI or the UTO-UCI exists, the above HARQ is replaced by the HARQ+CG-UCI or the HARQ+UTO-UCI. This means that the event-triggered indicated SR and the HARQ, the CG-UCI or the UTO-UCI are encoded together, the priority of the event-triggered indicated SR is lower than that of the CG-UCI or the UTO-UCI, and higher than that of other information.

[0114] • Method two

[0115] The reserved resource order and the mapping order on the PUSCH are as follows: 1) the HARQ, 2) the event-triggered indicated SR, 3) other information. This means that the event-triggered indicated SR is encoded separately, the priority of the event-triggered indicated SR is lower than that of the HARQ, and higher than that of other information.

[0116] Specifically, CRC bits are added after the bits of the event-triggered indicated SR. The number of the CRC bits is determined by the number of the bits of the event-triggered indicated SR. After the reserved resources of the HARQ are calculated, the reserved resources of the event-triggered indicated SR are calculated again, which are determined according to the total number of the bits of the event-triggered indicated SR and the CRC, and a high layer parameter configured β offset offset. The β offset The β offset can be event-triggered indicated SR specific. When mapped onto the PUSCH, the HARQ is mapped first, and then the event-triggered indicated SR is mapped. The event-triggered indicated SR can be mapped backward from the resources of the first symbol after the first DMRS of the PUSCH, or mapped forward from the resources of the first symbol before the first DMRS of the PUSCH, or mapped backward from the resources of the first symbol of the PUSCH.

[0117] • Method three

[0118] In particular, if the configured grant uplink control information (CG-UCI) or the uplink control information without transmission opportunity indication information (UTO-UCI) exists, it is also encoded together with the HARQ.

[0119] The resource reservation order and mapping order on PUSCH are as follows: 1) SR and CG-UCI or UTO-UCI of event-triggered indication and HARQ, 2) other information. This means that event-triggered indication and HARQ, CG-UCI or UTO-UCI are encoded together, the priority of event-triggered indication SR is lower than that of HARQ, and higher than that of CG-UCI or UTO-UCI.

[0120] In particular, event-triggered indication SR can replace CG-UCI or UTO-UCI, that is, only one of the three can exist.

[0121] FIG. 5 shows a flowchart of a beam management method according to another embodiment of the present application. As shown in FIG. 5, the method can include operations S201 to S209.

[0122] In S201, the UE reports to the base station whether the capability of event-driven beam management is supported. In particular, in the case of multiple carriers, the UE reports to the base station whether the capability of event-driven beam management of multiple carriers is supported.

[0123] In S202, the base station sends an event-driven beam management indication to the UE, indicating whether the cell supports event-driven beam management.

[0124] In the case of multiple carriers, the UE can use a bitmap or index corresponding to the list of activated cells to indicate whether one or more cells have event triggering. Some cells can not support or some time periods do not need event-triggered beam reporting, so the bitmap or index can be considered to avoid these cells when indicating, thereby reducing the overhead. Therefore, the base station needs to inform the UE whether the event-triggered beam reporting is supported.

[0125] In one way, the indication can be semi-statically configured by a high-level parameter. For example, a one-level indication mode can be implemented, and a high-level parameter in the form of a bitmap or list is used to configure whether the primary and secondary cells support event-driven beam management. Alternatively, a two-level indication mode can be implemented, and a high-level parameter is used to configure whether the primary cell supports event-driven beam management, and a high-level parameter in the form of a bitmap or list is used to configure whether the secondary cell supports event-driven beam management.

[0126] For example, in each cell, a high-level parameter in the form of a field can be used to configure whether the cell supports event-triggered beam reporting, as shown in Table 5.

[0127] Table 5

[0128] If the parameter eventDrivenBeamReport is configured to support, it means that the cell supports event-driven beam reporting; if the parameter eventDrivenBeamReport is not configured, it means that the cell does not support event-driven beam reporting.

[0129] For example, in each cell group, a high-level parameter in the form of a bitmap can be used to configure whether the cell supports event-triggered beam reporting, as shown in Table 6.

[0130] Table 6

[0131] Each bit in the bit stream of the parameter eventDrivenBeamReport corresponds to each CellIndex in the cellList. If the bit is '0', it means that the corresponding cell does not support event-driven beam reporting; if the bit is '1', it means that the corresponding cell supports event-driven beam reporting. The CellIndex can be an index in a certain cell set, or a physical cell identifier (PCI).

[0132] Considering that the configurations of the primary cell (PCell and / or PSCell) and the secondary cell (SCell) have great differences, a separate high-level parameter can be used to configure whether the primary cell supports event-triggered beam reporting; while in the secondary cell group, a high-level parameter in the form of a bitmap can be used to configure whether the secondary cell supports event-triggered beam reporting.

[0133] For example, in each cell group, a high-level parameter in the form of a list can be used to configure the list of cells that support event-triggered beam reporting, as shown in Table 7.

[0134] Table 7

[0135] The cells in the parameter cellListSupportEDBR all support event-triggered beam reporting. Optionally, considering that the configurations of the primary cell and the secondary cell have great differences, a separate high-level parameter can be used to configure whether the primary cell supports event-triggered beam reporting; while in the secondary cell group, a high-level parameter in the form of a list can be used to configure the list of secondary cells that support event-triggered beam reporting.

[0136] In another way, the indication can be dynamically indicated by a MAC CE. For example, the existing MAC CE for secondary cell activation can be reused, and the R region is used to indicate whether the MAC CE is used to activate a secondary cell or to indicate whether the secondary cell supports event-driven beam management. Alternatively, an indication of whether the primary cell and the secondary cell support event-driven beam management can be added in the existing MAC CE for secondary cell activation. Alternatively, a separate MAC CE can be used to indicate whether the primary cell and the secondary cell support event-driven beam management. Alternatively, the indication can be semi-statically configured by a high-level parameter and dynamically indicated by a MAC CE. For example, a high-level parameter can be used to configure whether the primary cell supports event-driven beam reporting, and a MAC CE can be used to indicate whether the secondary cell supports event-driven beam reporting.

[0137] For example, a high-level parameter can be used to configure whether the primary cell supports event-triggered beam reporting, and a MAC CE can be used to dynamically indicate whether the secondary cell supports event-triggered beam reporting. The dynamic indication can be a MAC CE. In other words, the indication of event-driven beam management can include a first indication parameter and a second indication bitmap or list. The first indication parameter is used to indicate whether the primary cell in the activated cell belongs to the plurality of specific cells, and the second indication bitmap or list is used to indicate whether the secondary cell in the activated cell belongs to the plurality of specific cells.

[0138] The existing MAC CE for secondary cell activation can be reused. A reserved region of 1 bit in the MAC CE for secondary cell activation is changed to an indication region, indicating whether the other region of the MAC CE is used to activate a secondary cell or to indicate whether the secondary cell supports event-triggered beam reporting.

[0139] Alternatively, a MAC CE can be designed to independently indicate whether the secondary cell supports event-triggered beam reporting. If the activated secondary cell is dynamically indicated to support event-triggered beam reporting, the number of bits in the region of the MAC CE indicating whether the secondary cell supports event-triggered beam reporting is determined according to the number of activated secondary cells. If the configured secondary cell is dynamically indicated to support event-triggered beam reporting, the number of bits in the region of the MAC CE indicating whether the secondary cell supports event-triggered beam reporting is determined according to the number of activated secondary cells.

[0140] Alternatively, a MAC CE can be designed to jointly indicate the activation of a secondary cell and whether the secondary cell supports event-triggered beam reporting. The MAC CE includes at least two regions of the activation of a secondary cell and whether the secondary cell supports event-triggered beam reporting. The region of whether the secondary cell supports event-triggered beam reporting is determined according to the number of activated secondary cells or the number of configured secondary cells.

[0141] For example, whether the primary cell and the secondary cell support event triggered beam reporting can both use dynamic indication. The dynamic indication can be a MAC CE, and the design method is similar to the design of the MAC CE in the foregoing example. The MAC CE needs to include an indication of whether the primary cell supports event triggered beam reporting.

[0142] In S203, the UE determines a set of cells for event driven beam management. The UE determines the number of cells that need to be managed according to the determination rule of the set of cells for event driven beam management. The number of bits required for the cell information in the SR and the event driven beam information of the subsequent event driven beam management is related to the number of cells in the set. The method of determining the set of cells can refer to the description in the foregoing, and will not be described here.

[0143] In S204, the base station sends a beam measurement reference signal to the UE.

[0144] In S205, the UE determines whether there is an event trigger based on the received beam measurement reference signal.

[0145] In S206, the UE sends a resource scheduling request related to event driven beam management to the base station. The SR of event driven beam management has been introduced in the previous embodiment, and will not be described here. This step corresponds to the first uplink signal in mode A or mode B.

[0146] In S207, the base station determines whether there is an event trigger based on the received SR. The base station can determine whether there is an event trigger according to the indication of the event trigger condition in the SR.

[0147] In S208, the base station sends uplink scheduling information to the UE. If there is no event trigger in any cell, the uplink resource scheduling includes an indication of not sending an event driven beam message; if there is an event trigger in one of the cells, the uplink resource scheduling includes an indication of sending an event driven beam message. This step corresponds to the downlink signal in mode A or mode B.

[0148] In S209, the UE sends an event triggered beam message to the base station. The event triggered beam message can be used to indicate the beam corresponding to the cell with an event trigger in the set of cells. This step corresponds to the second uplink signal in mode A or mode B.

[0149] In some embodiments, the event triggered beam message comprises at least one of cell information, event information, and beam information. The cell information indicates whether the specific cell has an event trigger. The event information indicates the triggered event of the specific cell, which can be presented in the form of a bitmap, each bit corresponding to a cell in the set of event-driven beam management cells. The beam information indicates the beam corresponding to the specific cell, which can also be presented in the form of a bitmap, each bit corresponding to each event.

[0150] FIG. 6 is an example of an event triggered beam message according to an embodiment of the present application. In the example of FIG. 6, the bitmap indicating whether a cell has an event trigger occupies 6 bits, i.e., the number of cells in the set of event-driven beam management cells The number of cells having an event trigger The event information of each cell having an event trigger occupies 3 bits, i.e., the number of events

[0151] FIG. 7 is an example of an event triggered beam message according to another embodiment of the present application. As shown in FIG. 7, in order to know which events of the cell having an event trigger are triggered more quickly, all event information can be placed after the bitmap indicating whether a cell has an event trigger.

[0152] FIG. 8 is an example of an event triggered beam message according to another embodiment of the present application. As shown in FIG. 8, if there is only one event, the event-driven beam information comprises at least one of cell information, event information, and beam information. The cell information uses a bitmap to indicate whether each cell has an event trigger, each bit corresponding to a cell in the set of event-driven beam management cells.

[0153] FIG. 9 is an example of an event triggered beam message according to another embodiment of the present application. As shown in FIG. 9, considering that the beam information of each event can not be completely the same, the beam information corresponding to each triggered event can be included in the event triggered beam message.

[0154] In addition, in the existing beam management technology (e.g., mode A shown in FIG. 2), if the base station receives the notification information triggered by the event, the base station will use the enhanced DCI format 0_1 or 0_2 to schedule the PUSCH to carry the beam information triggered by the event. The original DCI format 0_1 or 0_2 can perform aperiodic CSI measurement, and the scheduled PUSCH can carry aperiodic CSI reporting. This means that the PUSCH scheduled by the enhanced DCI format 0_1 or 0_2 can simultaneously carry the beam information triggered by the event and the aperiodic CSI reporting. The multiplexing relationship of the two kinds of information on the PUSCH needs to be defined, otherwise the base station cannot distinguish. In addition, this PUSCH can also overlap with the PUCCH carrying the UCI, so the multiplexing relationship of the UCI carried by the PUCCH and the beam information triggered by the event and the aperiodic CSI reporting carried by the PUSCH needs to be defined. In addition, for the purpose of saving overhead, there can be no specific cell information and event information in the first uplink signal, so the beam information triggered by the event needs to include these information.

[0155] Correspondingly, in some embodiments, the application provides that the beam information triggered by the event and the aperiodic channel state information (CSI) are multiplexed on the physical uplink shared channel (PUSCH). The specific description is as follows.

[0156] In one way, the beam information triggered by the event and the aperiodic CSI are encoded together. The aperiodic CSI is connected after the bits of the beam information triggered by the event, and CRC bits are added after the aperiodic CSI. The number of CRC bits is determined by the total number of bits of the beam information triggered by the event and the aperiodic CSI. Then the bits related to the beam information triggered by the event and the aperiodic CSI are encoded. Then the bits related to the beam information triggered by the event and the aperiodic CSI are mapped from the first symbol of the PUSCH.

[0157] In another way, the beam information triggered by the event and the aperiodic CSI are encoded separately. CRC bits are added after the beam information triggered by the event and the aperiodic CSI respectively. The number of CRC bits is determined by the number of bits of the beam information triggered by the event and the aperiodic CSI respectively. Then the bits related to the beam information triggered by the event and the aperiodic CSI are encoded respectively. Then the bits related to the beam information triggered by the event are mapped from the first symbol of the PUSCH, and the remaining resources are mapped to the bits related to the aperiodic CSI. Or the bits related to the beam information triggered by the event are mapped from the first symbol of the first DMRS of the PUSCH, and the remaining resources are mapped to the bits related to the aperiodic CSI.

[0158] The above method is for the case that the priority of the event-triggered beam information is higher than the aperiodic CSI. If the priority of the aperiodic CSI is higher than the event-triggered beam information, the above method can be adjusted.

[0159] In some embodiments, the method shown in FIG. 5 can further include obtaining an event-triggered downlink control information from the base station. The event-triggered downlink control information is used to indicate whether the PUSCH is used to carry the event-triggered beam message.

[0160] In mode A, the base station uses a downlink signal carrying DCI to schedule the PUSCH of the second uplink signal, wherein a CSI request area in the DCI is enhanced or a new area is added to indicate whether the PUSCH is the second uplink signal or whether the PUSCH can carry the event-triggered beam information. Therefore, the UE needs to distinguish the use of the CSI request area in the DCI or whether the above-mentioned new area exists. This is configured by a higher layer parameter, i.e., whether the CSI request area in the DCI can be used to indicate that the PUSCH can carry the event-triggered beam information or whether the new area indicating that the PUSCH can carry the event-triggered beam information exists.

[0161] If the new area in the DCI is used for indication, the new area is located after the CSI request area in the DCI and / or before the CBG transmission area. Table 8 shows an example of higher layer configuration.

[0162] Table 8

[0163] Wherein, if the higher layer parameter eventDrivenTrigger is configured as true, the new area exists in the DCI and occupies 1 bit; if the parameter eventDrivenTrigger is not configured, the new area does not exist in the DCI or the new area occupies 0 bits. When the event-triggered beam reporting is supported, the higher layer parameter eventDrivenTrigger can be configured as true.

[0164] For example, the higher layer configures the number of bits of the new area as shown in Table 9.

[0165] Table 9

[0166] If the high layer parameter eventDrivenTriggerSize is configured as 1, there is a new area in the DCI, occupying 1 bit; if eventDrivenTriggerSize is configured as 0 or not configured, there is no new area in the DCI, or the new area occupies 0 bits. When supporting event-triggered beam reporting, the high layer parameter eventDrivenTriggerSize can be configured as 1.

[0167] If the CSI request area is used for indication, the maximum number of bits of the CSI request area is 6+N (in particular, N=1), wherein several bits (up to N) are used to indicate the PUSCH-carrying event-triggered beam information, and other several bits (up to 6) are used to trigger aperiodic CSI measurement and reporting. The bits used to indicate the PUSCH-carrying event-triggered beam information have a special position, such as the front or the back.

[0168] The high layer parameter is configured to indicate whether the bits in the CSI request area for indicating the PUSCH-carrying event-triggered beam information exist, for example, as shown in Table 10.

[0169] Table 10

[0170] If the high layer parameter eventDrivenTriggerBit is configured as true, 1 bit in the CSI request area in the DCI is used to indicate the PUSCH-carrying event-triggered beam information. When supporting event-triggered beam reporting, the high layer parameter reportTriggerSize can be configured as a maximum of 7, and eventDrivenTriggerBit can be configured as true.

[0171] The original CSI request area in the DCI can be used to trigger aperiodic CSI measurement and reporting, that is, the PUSCH scheduled by the DCI can carry aperiodic CSI information. If it is enhanced in the above manner, it needs to be considered whether the aperiodic CSI reporting and the event-triggered beam reporting can be triggered at the same time. This can be configured by a high layer parameter or predefined.

[0172] The fact that they cannot be triggered at the same time means that the new area and the original CSI area can only take effect one at a time, and the enhanced CSI area can only indicate aperiodic CSI reporting or event-triggered beam reporting. That is, the PUSCH scheduled by the DCI can only carry one of the aperiodic CSI information or the event-triggered beam information.

[0173] The new region and the original CSI region can be activated simultaneously, and the enhanced CSI region can indicate the aperiodic CSI reporting or the event-triggered beam reporting simultaneously. That is, the PUSCH scheduled by the DCI can carry the aperiodic CSI information and the event-triggered beam information. This can be configured by a high-level parameter or predefined.

[0174] The embodiment helps to solve the problem of coexistence of event-driven beam information and aperiodic CSI. By defining the priority, the base station can distinguish the event-driven beam information and the aperiodic CSI.

[0175] The application also provides a method for beam reporting configuration in a single carrier case.

[0176] The beam reporting configuration includes or is associated with at least one of the following: configuration of beam measurement resources, configuration of events, configuration of reporting resources, configuration of reporting content, and configuration of reporting mode.

[0177] The configuration of the event includes at least one of the following: threshold value of each event, and timer.

[0178] The configuration of the reporting resource includes or is associated with at least one of the following: first uplink resource and period and offset of transmission, and second uplink resource and period and offset of transmission.

[0179] The configuration of the reporting content includes at least one of the following: whether the current beam is reported, whether the current beam reporting uses the first uplink resource, number of activated beam reporting, whether the quality value of the activated beam is reported, number of new beam reporting, and type of reported quality value (such as one of RSRP, RSRQ, and SINR).

[0180] The configuration of the reporting mode includes at least one of the following: mode A, mode B, or mode C. Configuration as mode A means that the first uplink signal, the downlink signal, and the second uplink signal exist; configuration as mode B means that the first uplink signal and the second uplink signal exist, and the downlink signal does not exist; and configuration as mode C means that the first uplink signal exists, and the second uplink signal and the downlink signal do not exist.

[0181] The relationship between the beam reporting configuration and the configuration of the beam measurement resource satisfies one of the following:

[0182] 1) 1 beam reporting configuration contains or associates with at most 2 or 3 beam measurement configurations, 1 beam measurement configuration contains or associates with 1 beam measurement resource set, 1 beam measurement resource set contains several beam measurement resources. If 2, the first beam measurement configuration corresponds to the measurement of the current beam and the new beam; the second beam measurement configuration corresponds to the measurement of the active beam. If 3, the first beam measurement configuration corresponds to the measurement of the current beam; the second beam measurement configuration corresponds to the measurement of the active beam; the third beam measurement configuration corresponds to the measurement of the new beam. (The order is not limited).

[0183] 2) 1 beam reporting configuration contains or associates with at most 1 beam measurement configuration, 1 beam measurement configuration contains or associates with at most 2 or 3 beam measurement resource sets, 1 beam measurement resource set contains several beam measurement resources. If 2, the first beam measurement resource set corresponds to the measurement of the current beam and the new beam; the second first beam measurement resource set corresponds to the measurement of the active beam. If 3, the first beam measurement resource set corresponds to the measurement of the current beam; the second beam measurement resource set corresponds to the measurement of the active beam; the third beam measurement resource set corresponds to the measurement of the new beam. (The order is not limited).

[0184] 3) 1 beam reporting configuration contains or associates with at most 1 beam measurement configuration, 1 beam measurement configuration contains or associates with at most 1 beam measurement resource set, 1 beam measurement resource set contains several beam measurement resources.

[0185] The application also provides a method for determining the reporting content of event 1 in a single carrier case.

[0186] • Method one

[0187] When the configuration of the event is event 1, the first uplink signal carries 1 bit or 1 sequence, which is used to indicate whether event 1 occurs. If event 1 is triggered, the value of the bit carried by the first uplink signal is '1'; if event 1 is not triggered, the value of the bit carried by the first uplink signal is '0', or the first uplink signal is not sent.

[0188] • Method two

[0189] When the configuration of the event is event 1, the first uplink signal carries N bits, which is used to indicate the information of the current beam. If event 1 is triggered, the value of the several bits carried by the first uplink signal is greater than or equal to '1'; if event 1 is not triggered, the value of the several bits carried by the first uplink signal is equal to '0'. Or, if event 1 is triggered, the value of the several bits carried by the first uplink signal is greater than or equal to '0'; if event 1 is not triggered, the first uplink signal is not sent.

[0190] • Method three

[0191] When the configuration of the event is event 1, the first uplink signal carries 1 bit or 1 sequence, which is used to indicate whether event 1 occurs; the second uplink signal carries several bits, which is used to indicate the information of the current beam. If event 1 is triggered, the value of the bit carried by the first uplink signal is '1', and the value of the several bits carried by the second uplink signal is greater than or equal to '0'; if event 1 is not triggered, the value of the bit carried by the first uplink signal is '0', or the first uplink signal is not sent, and the second uplink signal is not sent.

[0192] In particular, the information of the current beam only contains the quality value of the current beam, which can be reported in a complete manner, with a range of [-140, -44] and a step of 1 dB, occupying 7 bits; or can be reported in a differential manner, that is, the difference with the threshold value of event 1 is made, with a step of M dB and occupying N bits. In particular, M = 2 and N = 4.

[0193] In mode one and mode two, if reporting mode A is adopted, the configuration of the reporting resource only contains or is associated with 1 uplink signal, and there will be no subsequent downlink signal and second uplink signal. If reporting mode B is adopted, the configuration of the reporting resource also only contains or is associated with 1 uplink signal, and there will be no subsequent second uplink signal.

[0194] The reporting modes of mode one and mode two can also be a separate mode (such as reporting mode C). Specifically, reporting mode C has only one step: the first uplink signal (PUCCH) carries the indication information of event triggering and / or beam information. Mode A, mode B or mode C can be configured by a high-level parameter or predefined. In particular, if the configuration of the event is event 1, if the configuration of the reporting resource contains or is associated with 1 uplink signal, if the configuration of the reporting mode contains mode C, and / or if the configuration of the reporting content contains no reporting of the information of the current beam, the first uplink signal carries whether event 1 is triggered; and / or if the configuration of the reporting content contains reporting of the information of the current beam, the first uplink signal carries the quality value of the current beam.

[0195] In mode three, if reporting mode A is adopted, the configuration of the reporting resource contains or is associated with 1 uplink signal, and the second uplink signal is scheduled by the downlink signal. If reporting mode B is adopted, the configuration of the reporting resource contains or is associated with 2 uplink signals.

[0196] In mode one, the configuration of the reporting content contains no reporting of the information of the current beam. In methods two and three, the configuration of the reporting content contains no reporting of the information of the current beam.

[0197] The application also provides a method for determining the reporting content of event 7 in a single carrier case.

[0198] When the configuration of the event is event 7, then the first uplink signal carries 1 bit or 1 sequence, which is used to indicate whether event 7 occurs or not; the second uplink signal carries several bits, which is used to indicate the information of the new beams and / or the activated beams. If event 7 is triggered, the value of the bit carried by the first uplink signal is ‘1’, and the second uplink signal is sent, which contains the information of the new beams and / or the activated beams; if event 7 is not triggered, the value of the bit carried by the first uplink signal is ‘0’, or the first uplink signal is not sent, and the second uplink signal is not sent. If reporting mode A is adopted, the reporting resource related configuration contains or is associated with 1 uplink signal, and the second uplink signal is scheduled by the downlink signal. If reporting mode B is adopted, the reporting resource related configuration contains or is associated with 2 uplink signals.

[0199] If the second uplink signal is sent, the second uplink signal contains the information of the new beams and / or the activated beams. Specifically, the second uplink signal contains at least the indexes and quality values of the new beams, and the indexes of the activated beams. In addition, the second uplink signal can also contain the quality values of the activated beams. Further, the information of the activated beams can be arranged in a certain order. In addition, the number of reported quality values of the activated beams can not be equal to the number of reported indexes of the activated beams. In particular, several special quality values of the activated beams can be reported, such as the quality value of the best activated beam, the quality values of the best P activated beams, the quality value of the worst activated beam, the quality values of the worst Q activated beams, and / or the quality value of the activated beam related to the current beam, where P and Q can be related to M in event 7.

[0200] Suppose the number of reported new beams is then the reporting content of the information of the new beams is shown in Table 11, where at least one new beam satisfies the triggering condition of event 7.

[0201] Table 11

[0202] The index of the new beam corresponds to the quality value of the new beam. The quality value of the first new beam (quality value of the new beam #1) is the best, which is reported in a complete manner and occupies 7 bits; the quality values of the other new beams (quality values of the new beam #2 to ) are reported in a differential manner, that is, the quality values are differentiated from the quality value of the first new beam with a step of M dB, and occupy N bits. In particular, M = 2, N = 4.

[0203] Suppose the number of reported activated beams is then the reporting content of the information of the activated beams is shown in Table 12.

[0204] Table 12

[0205] The index of the activated beam corresponds to the quality value of the activated beam. The quality value of the first activated beam (quality value #1 of the activated beam) is the worst or the best, reported in full, occupying 7 bits; the quality values of the other activated beams (quality value #2 to ) are reported in differential, i.e. different from the quality value of the first activated beam, with a step of M dB, occupying N bits. In particular, M = 2, N = 4.

[0206] Further, in order to make the base station more accurately understand the quality of the activated beam, the reporting order of the activated beam can be arranged according to the quality value of the activated beam. If the quality value of the first activated beam is the worst, the quality values of the activated beams can be arranged from bad to good, i.e. the quality value of the first activated beam is less than the quality value of the second activated beam (quality value #2 of the activated beam), the quality value of the second activated beam is less than the quality value of the third activated beam (quality value #3 of the activated beam), and so on. If the quality value of the first activated beam is the best, the quality values of the activated beams can be arranged from good to bad, i.e. the quality value of the first activated beam is greater than the quality value of the second activated beam, the quality value of the second activated beam is greater than the quality value of the third activated beam, and so on. Of course, the index of the activated beam also needs to be arranged according to the corresponding quality value.

[0207] In addition, in addition to arranging according to the quality value, the quality values of the activated beams can also be reported in a chain differential manner. The quality value of the first activated beam is reported in full, occupying 7 bits; the quality value of the second activated beam is differentially reported by differentiating the quality value of the first activated beam; the quality value of the third activated beam is differentially reported by differentiating the quality value of the second activated beam. Similarly, the step of the differential reporting is M dB, occupying N bits. In particular, M = 1 or 0.5, N = 4. Whether to use the chain differential manner can be configured by a high layer parameter, or predefined, and / or determined according to the UE capability.

[0208] In order to better update the TCI state list corresponding to the activated beam, rules can be imposed on the selection of the reported activated beam. It is stipulated that the information of the best activated beams is reported; or the information of the worst activated beams is reported; or the information of the best and the worst activated beams is reported, the total number of which does not exceed ; or the information of the best and / or the worst activated beams and the information of the activated beam corresponding to the current beam is reported, the total number of which does not exceed .

[0209] Further, rules can be applied to the selection of the reported indexes and quality values of the activated beams. The number of reported indexes of the activated beams can be greater than the number of reported quality values of the activated beams. It can be specified that the quality values of a number of specific (e.g., the best 1, the current beam corresponding to) activated beams are reported. In particular, the number of indexes of the activated beams is and the number of quality values of the activated beams can be 0 or 1.

[0210] In order to save reporting overhead, the quality values of the activated beams can not be reported, and only the indexes of the activated beams are reported. Further, the indexes of the activated beams are arranged according to the quality values of the activated beams. In this way, the base station can know the relative good and bad of the activated beams through the arrangement. Only reporting the indexes of the beams and not reporting the quality values of the beams can be configured by a higher layer parameter or predefined.

[0211] In order to save reporting overhead and better indicate the TCI state, the reported information of the activated beams can be the information of the best activated beams among all the activated beams. The number of indexes of the activated beams and the number of quality values of the activated beams can be equal (e.g., both ), or the number of indexes of the activated beams is greater than the number of quality values of the activated beams (e.g., the indexes of the best and the quality value of the best 1). It is equivalent to implicitly indicating that the remaining activated beams that are not reported are relatively poor, and the base station can update the TCI states corresponding to these activated beams. At the same time of updating, the base station can also indicate the TCI state corresponding to the best activated beam.

[0212] In addition, the reported information of the activated beams can be the information of a number of best activated beams and a number of worst activated beams among all the activated beams. The information of the best activated beams can include indexes and quality values, and the information of the worst activated beams can only include indexes (e.g., the best 1 and the worst ). It is equivalent to explicitly indicating the TCI states corresponding to the activated beams that need to be updated. At the same time, the base station can also indicate the TCI state corresponding to the best activated beam.

[0213] Further, the activated beams must include the current beam, so the indexes and quality values of the activated beams corresponding to the current beam can be reported. In this way, the base station can better know the relative good and bad between the current beam and some activated beams, and the base station can better indicate the TCI state. The quality value of the current beam can also be reported in a differential manner.

[0214] If the first activated beam is the Mth best activated beam, and the following activated beams are worse than this beam, the quality values of the reported activated beams are reported in a differential manner, i.e., the quality values are differentiated from the quality value of the first new beam.

[0215] In the reporting, the arrangement of the index of the new beam, the quality value of the new beam, the index of the current beam, and the quality value of the current beam can be in the following two manners, as shown in Table 13 and Table 14 respectively. It should be understood that the parameters shown in the tables and the order of positions are only examples, and are not a limitation on the specific implementation scheme.

[0216] Table 13

[0217] Table 14

[0218] The first method is suitable for complete reporting of the quality value of the first new beam, and differential reporting of the quality values of the other beams from the quality value of the first new beam. The second method is suitable for complete reporting of the quality value of the first new beam and the quality value of the first activated beam, and differential reporting of the quality values of the other new beams from the quality value of the first new beam, differential reporting of the quality values of the other activated beams from the quality value of the first activated beam, or differential reporting of the quality values of the activated beams in a chain manner.

[0219] In some cases, an indication can be needed to distinguish the resource set of the new beam and the activated beam. Then, only an indication of the resource set (such as occupying 1 bit) can be added in front of the new beam, or different indications of the resource set can be added in front of the new beam and the activated beam respectively.

[0220] In addition, when the event is configured as event 7, the reporting resource-related configuration contains or is associated with 2 uplink signals, then the first uplink signal carries a number of bits for indicating the number of reported new beams and / or activated beams in event 7, and the second uplink signal carries a number of bits for indicating the information of a number of new beams and / or activated beams.

[0221] The application also provides a method for determining the number of reported beams of event 7 in a single carrier case.

[0222] The number of reported new beams of event 7 or the number of reported activated beams The number of new beams reported in event 7 can be configured by a higher layer parameter, predefined, determined according to UE capability, determined according to the number of TCI states, determined according to the value of M in event 7, determined according to the number of beams in other reports, determined according to the number of measurement resources, and / or indicated by the first uplink signal. The number of TCI states can be the number of activated TCI states, or the number of maximum activated TCI states, or the number of configured TCI states. The following is described by taking the number of new beams reported in event 7 as an example.

[0223] If it is configured by a higher layer parameter or predefined, the interval of the number of new beams reported in event 7 is 1 to The maximum value of may be determined according to the number of TCI states, the value of M in event 7, and / or the number of measurement resources.

[0224] If it is determined according to the number of TCI states, the number of new beams reported in event 7 can be equal to the number of TCI states, or the number of TCI states plus N, or the number of TCI states minus N offset N offset is a positive integer (such as 1 or 2), which can be configured by a higher layer parameter or predefined.

[0225] If it is determined according to the value of M in event 7, the number of new beams reported in event 7 can be equal to the value of M, or the value of M plus N, or the value of M minus N offset .

[0226] If it is determined according to the value of M in event 7 and the number of TCI states, the number of new beams reported in event 7 can be equal to the number of TCI states minus the value of M, or the number of TCI states minus the value of M plus N offset , or the number of TCI states minus the value of M minus N offset .

[0227] If it is determined according to the number of measurement resources, the number of new beams reported in event 7 can be equal to the number of measurement resources, or the integer value of a fraction of the number of measurement resources.

[0228] If it is determined according to the number of beams in other reports, the number of new beams reported in event 7 can be the same as the original number of beam reports, or the number of new beams reported in event 2.

[0229] In particular, the number of new beams reported in event 7 is equal to 1, and the number of reported activated beams is equal to 0 or 1.

[0230] In the above method, the number of new beams reported in event 7 and the number of reported activated beams are determined independently.

[0231] The reporting number of new beams of event 7 and the reporting number of activated beams can also be determined jointly, i.e. the reporting number of one kind of beams is inferred from the reporting number of the other kind of beams. The reporting number of one kind of beams is determined according to the above-mentioned manner. In particular, the reporting number of the two kinds of beams is the same, or the number of one kind of beams is several times the number of the other kind of beams, which can also be configured by a high-level parameter or predefined.

[0232] In addition, a total reporting beam number (such as ) and the reporting number of one kind of beams (such as ) can also be determined, and the reporting number of the other kind of beams is equal to the total reporting beam number minus the reporting number of one kind of beams (such as ). The reporting number of one kind of beams is determined according to the above-mentioned manner. The total reporting beam number can be determined according to the determination method of the reporting number of new beams of event 7, such as high-level parameter configuration, predefinition, number of TCI states, etc.

[0233] More simply, only a total reporting beam number can also be determined, and the UE decides the number of reported activated beams and new beams by itself. This is more suitable for the case where the reference signals corresponding to the activated beams and the reference signals corresponding to the new beams are configured in the same resource set.

[0234] The present application also provides a method for determining the bit number of beam indexes of event 7 in a single carrier case.

[0235] When the configuration of the event is event 7, 1 beam reporting configuration contains or is associated with 1 beam measurement resource configuration, 1 beam measurement resource configuration contains or is associated with 1 reference signal resource set, and 1 reference signal resource set contains a plurality of reference signals of new beams and a plurality of reference signals of activated beams, then the bit number occupied by the index of each new beam and activated beam is calculated according to the number of reference signals in the reference signal resource set, and the number of reference signals is equal to the sum of the number of reference signals of new beams and activated beams. For example, the reference signals of new beams and activated beams in the reference signal resource set are and , i.e. there are reference signals in total in this resource set, then the index of each new beam and activated beam occupies bits.

[0236] When the configuration of the event is event 7, the 1-beam reporting configuration contains or is associated with 1-beam measurement resource configuration, the 1-beam measurement resource configuration contains or is associated with 2 reference signal resource sets, the first reference signal resource set contains reference signals of a number of new beams, the second reference signal resource set contains reference signals of a number of activated beams, or the 1-beam reporting configuration contains or is associated with 2 signal measurement configurations, the first signal measurement configuration contains or is associated with the first reference signal resource set, and the second signal measurement configuration is associated with the second reference signal resource set, then the index of each new beam is calculated according to the number of reference signals in the first reference signal resource set, and the index of each activated beam is calculated according to the number of reference signals in the second reference signal resource set. For example, the first reference signal resource set contains reference signals of 2 new beams, and the second reference signal resource set contains reference signals of 3 activated beams, then the index of each new beam occupies 2 bits, and the index of each activated beam occupies 3 bits.

[0237] The application also provides a method for determining the reporting content of event 1 in a multi-carrier case.

[0238] • Method one

[0239] When the configuration of the event is event 1, the first uplink signal carries a bitmap, and one bit in the bitmap corresponds to one cell in the event-driven beam management cell set, which is used to indicate whether the cell has an event trigger. If at least one cell in the event-driven beam management cell set has an event trigger, the value of at least one bit in the bitmap carried by the first uplink signal is '1'. If all cells in the event-driven beam management cell set do not have an event trigger, the first uplink signal is not sent, or the first uplink signal is sent, and all bits carried in the bitmap are '0'.

[0240] • Method two

[0241] ​​​​When the event is configured as event 1, the first uplink signal carries several bits indicating the information of the current beam of several cells in the event-driven beam management cell set, and the information of the current beam of at least one cell satisfies the triggering condition of event 1. If at least one cell in the event-driven beam management cell set has event 1 triggering, the value of the several bits carried by the first uplink signal is greater than or equal to '1'; if all cells in the event-driven beam management cell set have no event 1 triggering, the value of the several bits carried by the first uplink signal is equal to '0'. Alternatively, if at least one cell in the event-driven beam management cell set has event 1 triggering, the value of the several bits carried by the first uplink signal is greater than or equal to '0'; if all cells in the event-driven beam management cell set have no event 1 triggering, the first uplink signal is not sent.

[0242] • Mode three

[0243] When the event is configured as event 1, the first uplink signal carries 1 bit or 1 sequence indicating whether there is event 1 triggering in the event-driven beam management cell set; the second uplink signal carries a bit stream in the form of a bitmap, one bit in the bitmap corresponding to one cell in the event-driven beam management cell set, for indicating whether there is event triggering in the cell. If at least one cell in the event-driven beam management cell set has event 1 triggering, the value of the bit carried by the first uplink signal is '1'; if all cells in the event-driven beam management cell set have no event 1 triggering, the value of the bit carried by the first uplink signal is '0', or the first uplink signal is not sent. If the first uplink signal indicates event 1 triggering, at least one bit in the bitmap carried by the second uplink signal has a value of '1'. If the first uplink signal indicates no event 1 triggering, the second uplink signal is not sent.

[0244] • Mode four

[0245] When the event is configured as event 1, the first uplink signal carries 1 bit or 1 sequence indicating whether there is event 1 triggering in the event-driven beam management cell set; the second uplink signal carries several bits indicating the information of the current beam of several cells in the event-driven beam management cell set, and the information of the current beam of at least one cell satisfies the triggering condition of event 1.

[0246] If the current beam of all cells in the event-driven beam management cell set is in the same beam measurement resource set, and / or if each current beam is associated with cell information, the information of the current beam contains the index and quality value of the current beam, and is one-to-one correspondence. The index of the current beam implicitly indicates the cell information, i.e. the cell corresponding to the current beam. The number of bits of the index of the cell is wherein the number of cells in the cell set for event-driven beam management.

[0247] the number of cells reported by the second uplink signal is if all the current beams of the cells in the cell set for event-driven beam management are reported, and the rest are zero-padded; if the current beams of cells in the cell set for event-driven beam management are reported, and the current beams of at least one cell satisfy the triggering condition of event 1. In event 1, each cell has one current beam, i.e., the cell and the current beam are one-to-one corresponding, thus also represents the number of current beams reported by the second uplink signal, which is configured by a higher layer parameter or predefined.

[0248] if the second uplink signal can only report the current beams of part of the cells in the cell set for event-driven beam management the number of cells satisfying the triggering condition of event 1 is if the current beams of cells satisfying the triggering condition of event 1 in the cell set for event-driven beam management are reported, which is equivalent to the current beams of cells satisfying the triggering condition of event 1 cannot be reported; if the current beams of cells satisfying the triggering condition of event 1 are reported, and

[0249] the current beams of

[0250] The quality value of each current beam can be reported in the original beam reporting manner, i.e., the quality value of the first current beam is the worst, and is reported in the full reporting manner, and the quality values of the other current beams are differentially reported with the quality value of the first current beam. The quality value of each current beam can also be differentially reported with the threshold value of event 1, with a step of M dB, occupying N bits. In particular, M = 2, and N = 4.

[0251] In arranging the reported current beams, if both the index and the quality value of the current beam are reported, or if the quality value of the beam is not reported and the index is reported, the current beams can be arranged in order from bad to good according to the quality value, or arranged in order of the cells (the primary cell is first); if the index of the current beam is not reported and the quality value is reported, the current beams are arranged in order of the cells. The order of the cells can be the default order of the cells or the order of the cells in the event-driven beam management cell set. Reporting only one of the index and the quality value can save reporting overhead. Arranging the index according to the quality value can roughly understand the relative situation of the current beams of different cells.

[0252] • Method five

[0253] When the configuration of the event is event 1, the first uplink signal carries 1 bit or 1 sequence, which is used to indicate whether there is a cell in the event-driven beam management cell set that has event 1; the second uplink signal carries a bitmap indicating whether there is an event trigger in the cell in the event-driven beam management cell set and the information of the current beam of a plurality of cells in the event-driven beam management cell set, and the current beam of at least one cell satisfies the trigger condition of event 1.

[0254] The same determination method of the number of reported cells or current beams, the reporting manner of the quality value of the current beam, etc. can be adopted as in method four. In selecting the current beam, the current beam of the cell satisfying the trigger condition of event 1 is selected first according to the order of the cells in the event-driven beam management cell set, and then the current beam of the cell not satisfying the trigger condition of event 1 is selected. In arranging the reported current beams, the current beam of the cell satisfying the trigger condition of event 1 is arranged first, which corresponds one-to-one with the cell indicated in the bitmap to satisfy the trigger condition of event 1, and then the current beam of the cell not satisfying the trigger condition of event 1 is arranged, which corresponds one-to-one with the cell indicated in the bitmap not to satisfy the trigger condition of event 1.

[0255] Since the bitmap has provided the cell information, the index of the current beam can not be reported, and only the quality value of the current beam is reported.

[0256] • Method six

[0257] When the configuration of the event is event 1, the first uplink signal carries a bit stream in the form of a bitmap, one bit in the bitmap corresponding to one cell in the event-driven beam management cell set, for indicating whether the cell has an event trigger; the second uplink signal carries several bits, for indicating the information of the current beam corresponding to the cell with an event trigger in the bitmap.

[0258] For mode A, the number of cells or current beams reported by the second uplink signal is equal to the number of cells satisfying the trigger condition of event 1 indicated by the bitmap in the first uplink signal. Each current beam reported by the second uplink signal corresponds to one cell satisfying the trigger condition of event 1 indicated by the bitmap in the first uplink signal. The reporting manner of the quality value can be the same as that in method four.

[0259] For mode B, the same reporting manner of the number of cells or current beams, the reporting manner of the quality value of the current beam, etc. can be adopted as in method four. When selecting the current beam, the current beam of the cell satisfying the trigger condition of event 1 is selected first, and then the current beam of the cell not satisfying the trigger condition of event 1 is selected, in the order of the cells in the event-driven beam management cell set. When reporting the current beam, the current beam of the cell satisfying the trigger condition of event 1 is arranged first, which corresponds to one cell satisfying the trigger condition of event 1 indicated by the bitmap in the first uplink signal, and then the current beam of the cell not satisfying the trigger condition of event 1 is arranged, which corresponds to one cell not satisfying the trigger condition of event 1 indicated by the bitmap in the first uplink signal.

[0260] Since the bitmap has provided the cell information, the index of the current beam can not be reported, and only the quality value of the current beam is reported.

[0261] It should be noted that each bit in the bitmap corresponds to one cell in the event-driven beam management cell set, and the number of bits in the bitmap is equal to the number of cells in the event-driven beam management cell set.

[0262] In method one, method two and method three, the configuration of the reported content contains no current beam information. In method four, method five and method six, the configuration of the reported content contains current beam information. In method four, method five and method six, the configuration of the reported content contains whether to report the index of the current beam.

[0263] The reported content of the second uplink signal of event 1 is shown in Table 15 and Table 16. It should be understood that the parameters and their position order shown in the table are only examples, and are not a limitation on the specific implementation scheme.

[0264] Table 15

[0265] Table 16

[0266] The application also provides a method for determining the reporting content of event 2 and event 7 in a multi-carrier case.

[0267] In the multi-carrier case, the first uplink signal can carry one of the following: an indication of event triggering, a cell index, an event index, information of a current beam, and information of a new beam.

[0268] Method one: The first uplink signal carries one bit or one sequence, which is used to indicate whether there is event triggering in the cell set of event-driven beam management. If at least one cell in the cell set of event-driven beam management has event triggering, the UE will send the first uplink signal, which carries a bit value of '1'; if all the cells in the cell set of event-driven beam management have no event triggering, the UE will not send the first uplink signal, or the UE will send the first uplink signal, which carries a bit value of '0'.

[0269] Method two: The first uplink signal carries a bit stream in bitmap form, and one bit in the bitmap corresponds to one cell in the cell set of event-driven beam management, which is used to indicate whether there is event triggering in the cell. The number of bits in the bit stream is equal to the number of cells in the cell set of event-driven beam management. If at least one cell in the cell set of event-driven beam management has event triggering, the UE will send the first uplink signal, which carries at least one bit value of '1' in the bitmap. If all the cells in the cell set of event-driven beam management have no event triggering, the UE will not send the first uplink signal, or the UE will send the first uplink signal, which carries all bit values of '0' in the bitmap.

[0270] If the first uplink signal indicates event triggering (for example, the first uplink signal carries a bit value of '1', or the first uplink signal carries at least one bit value of '1' in the bitmap), the second uplink signal will be sent; if the first uplink signal indicates no event triggering (for example, the first uplink signal carries a bit value of '0', or the first uplink signal carries all bit values of '0' in the bitmap, or the first uplink signal is not sent), the second uplink signal will not be sent.

[0271] In the multi-carrier case, if the second uplink signal is sent, it carries one of the following: a cell index, an event index, information of a current beam, and information of a new beam.

[0272] Method one: The second uplink signal carries information of a plurality of groups of beams, and the information of each group of beams corresponds to a different cell and contains information of beams of the corresponding cell, and at least one group of beam information corresponds to a cell with event triggering.

[0273] Method two: the bit stream in the form of the second uplink signal bearing bitmap and the information of several groups of beams. The information of each group of beams corresponds to the beam information of the cells with event triggering indicated by the bitmap. This method is mainly applicable to the case that the first uplink signal does not bear the cell information.

[0274] FIG. 10 shows an example of the correspondence between the bitmap and the beam information. In the example, the bitmap occupies 6 bits, i.e. the number of cells in the cell set of the event-driven beam management Each bit indicates whether each cell has event triggering; the number of cells that can be reported It can be seen that when the number of cells that can be reported is greater than the number of cells with event triggering, the beam information of the cells with event triggering is mapped first, and then the beam information of the cells without event triggering is mapped. In particular, for mode A, if the first uplink signal contains the bitmap, the second uplink signal will not contain the beam information of the cells without event triggering.

[0275] In the example, the bitmap is sent in the first uplink signal or in the second uplink signal. If it is event 1, the beam information in the example contains the current beam information, which is sent in the first uplink signal or in the second uplink signal; if it is event 2, the beam information in the example contains the new beam and the current beam information, which is sent in the second uplink signal; if it is event 7, the beam information contains the new beam and the activated beam information, which is sent in the second uplink signal.

[0276] The above reporting example is unfair to the cells arranged later, and the probability of reporting the beam information of the cells closer to the back is smaller. It is considered to add the index of the cells without event triggering in the reporting. The number of bits of the index of the cells without event triggering can be determined according to the total number of bits in the bitmap or according to the number of bits indicating the cells without event triggering in the bitmap. An example of adding the index of the cells without event triggering is shown in FIG. 11.

[0277] In the example shown in FIG. 11, only the beam information of one group of cells without event triggering is shown. At other times, the beam information of the cells without event triggering can have multiple groups. Then, the index of the cells without event triggering can have multiple. Each index of the cells without event triggering can be located before the beam information of each cell without event triggering, or all the indexes of the cells without event triggering are together, located after the bitmap and before the beam information of the first cell with event triggering, or located after the beam information of the last cell with event triggering and before the beam information of the first cell without event triggering.

[0278] The above method is applicable to the case that the first uplink signal of mode A or mode B does not provide cell information, or the case that the first uplink signal of mode B provides cell information.

[0279] For event 2, when neither the first uplink signal nor the second uplink signal has the cell information, the reporting manner of the beam information of the second uplink signal is described as follows.

[0280] If all the current beams of the cells in the event-driven beam management cell set are in the same beam measurement resource set, and / or if each current beam is associated with the cell information, the information of the current beam contains the index and quality value of the current beam, and is one-to-one correspondence. The index of the current beam is equivalent to implicitly indicating the cell information, i.e., the cell corresponding to the current beam. The number of bits of the index of the cell is Wherein is the number of cells in the event-driven beam management cell set.

[0281] The reporting number of the cells is The number of new beams reported by each cell is The total number of reported new beams is If the current beam is configured to be reported, the total number of reported current beams is Then, the total number of reported beams is If All the new beams and / or current beams of the cells in the event-driven beam management cell set are reported, and the rest are zero-padded; if The new beams and / or current beams of cells in the event-driven beam management cell set are reported, and the new beams of at least one cell meet the triggering condition of event 2.

[0282] If the second uplink signal can only report the current beams of part of the cells in the event-driven beam management cell set The number of cells meeting the triggering condition of event 2 is If The new beams and / or current beams of cells meeting the triggering condition of event 2 in the event-driven beam management cell set are reported, which is equivalent to The new beams and / or current beams of The new beams and / or current beams of cells meeting the triggering condition of event 2 in the event-driven beam management cell set are reported, and The new beams and / or current beams of

[0283] The selection rule or priority of the cell and its new beam and / or current beam is set. The selection of the current beam can be based on the quality value of the best new beam in the cell, the quality value of the current beam, the cell type and / or whether the triggering condition of event 2 is met. The selection based on the quality value of the current beam is to select the corresponding cell according to the quality value of the current beam of each cell from bad to good, that is, to preferentially select the new beam and the current beam of the cell with better quality value of the current beam. The selection based on the quality value of the best new beam in the cell is to select the corresponding cell according to the best new beam in each cell from good to bad, that is, to preferentially select the new beam and / or the current beam of the cell with better quality value of the best new beam in the cell. The selection based on the cell type is to select the corresponding cell according to the priority of the primary cell and the secondary cell, that is, to preferentially select the new beam and / or the current beam of the primary cell, and then to select the new beam and / or the current beam of the secondary cell. The selection based on whether the triggering condition of the event is met is to select the new beam and / or the current beam of the corresponding cell according to the priority of the cell meeting the triggering condition of event 2 and the cell not meeting the triggering condition of event 2. The above selection methods can be used alone or in combination.

[0284] The quality value of the new beam and / or the quality value of the current beam of each cell can adopt the beam reporting method of event 2 in the single carrier case, that is, the quality value of the first new beam is the best, and the quality value of the other new beam and / or the current beam is differentially reported with the quality value of the first new beam.

[0285] When the current beam is reported, if the index of the current beam is reported, the current beam can be arranged in order from bad to good according to the quality value, or arranged in order according to the cell sequence (the primary cell is first); if the index of the current beam is not reported, the current beam is arranged in order according to the cell sequence, which can save the reporting overhead. The cell sequence can be the default cell sequence or the cell sequence in the cell set of the event-driven beam management.

[0286] Event 7 can adopt a similar method to event 2, and 1 current beam needs to be replaced by several active beams.

[0287] In addition to the above methods, the bitmap indicating whether the cell has event triggering carried in the first uplink signal or the second uplink signal can be replaced by the index of the cell with event triggering. The number of reported cell indexes can be configured by a higher layer parameter or predefined. The index of each reported cell is determined by the number of cells in the cell set of the event-driven beam management, that is, wherein is the number of cells in the cell set of the event-driven beam management. Similarly, the bitmap indicating whether the event is triggered can also be replaced by the index of the event. The number of reported event indexes can be configured by a higher layer parameter or predefined.

[0288] The cell mentioned in the foregoing description can be a band, a carrier, a BWP, or a TRP. In this document, "several" can mean one or more. The uplink signal is transmitted in the configured or indicated uplink resource, and the uplink signal and the uplink resource can be considered equivalent. The beam includes at least one of the following: a current beam, an activated beam, and a new beam. The current beam refers to a reference signal or a corresponding beam related to the TCI state indicated by the DCI. The activated beam refers to a reference signal or a corresponding beam related to the TCI state activated by the MAC CE. For event 2, the new beam refers to a beam or a corresponding reference signal other than the current beam. For event 7, the new beam refers to a beam or a corresponding reference signal other than the current beam and / or the activated beam. The current beam, the activated beam, or the new beam can be independently configured (for example, configured in different resource sets). The beam information includes at least one of the following: an index of the beam and a quality value of the beam. The index of the beam can be an index of a reference signal, such as SSBRI, CRI, SRI, or the like. The quality value of the beam can be RSRP, RSRQ, SINR, or the like. The uplink signal simultaneously carries information A and information B, that is, information A and information B are multiplexed on the uplink signal.

[0289] The method designed above for event 1, event 2, and event 7 is not limited to the definitions, event 1 is also applicable to monitoring the current beam, event 2 is also applicable to monitoring the new beam, and event 7 is also applicable to monitoring the new beam and / or the activated beam. In addition, the specific names of event 1, event 2, and event 7 are not limited, that is, the scheme of the embodiments of the present application can also be applicable to other events that are the same as or similar to the above events, even if the names / numbers of these events are different from the names / numbers mentioned above.

[0290] FIG. 12 is a schematic block diagram of a communication device 300 provided by an embodiment of the present application. As shown in FIG. 12, the communication device 300 includes a processor 301 and a memory 302, and the processor 301 and the memory 302 are communicatively connected. The communication device 300 can be, for example but not limited to, a user equipment, a base station, or other communication network element. In some embodiments, the communication device 300 can also include a transceiver for transmitting / receiving data, or only include a transmitting circuit for transmitting data, or only include a receiving circuit for receiving data. The memory 302 of the communication device 300 is used to store program instructions, which can be executed by the processor 301 to implement the beam management method described in any of the embodiments above.

[0291] It should be understood that the processor of the embodiments of the present application can be an integrated circuit chip having a signal processing capability. In the implementation process, each step of the method embodiments described above can be completed by an integrated logic circuit or an instruction in the form of software in the processor.

[0292] It can be appreciated that the memory in the embodiments of the application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memory. It should be noted that the memory of the system and method described herein is intended to include, but not be limited to, the aforementioned types of memories and any other suitable type of memory. The embodiments of the application also provide a computer readable storage medium for storing a computer program.

[0293] Optionally, the computer readable storage medium can be applied to the communication device in the embodiments of the application, and the computer program causes the computer to execute the corresponding procedures realized by the communication device in the various methods of the embodiments of the application. For brevity, details are not repeated here. Alternatively, the computer readable storage medium can be applied to the user equipment in any of the embodiments of the application, and the computer program causes the computer to execute the procedures realized by the user equipment in the various methods of the embodiments of the application. For brevity, details are not repeated here. Alternatively, the computer readable storage medium can be applied to the base station in any of the embodiments of the application, and the computer program causes the computer to execute the procedures realized by the base station in the various methods of the embodiments of the application. For brevity, details are not repeated here.

[0294] The embodiments of the application also provide a computer program product comprising computer program instructions.

[0295] Optionally, the computer program product can be applied to the communication device in the embodiments of the application, and the computer program instructions cause the computer to execute the corresponding procedures realized by the communication device in the various methods of the embodiments of the application. For brevity, details are not repeated here.

[0296] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the application.

[0297] The above is only a specific implementation of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the application, which should be covered within the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A method of beam management performed by a user equipment (UE), comprising: obtaining a beam measurement reference signal from a base station; determining whether to report event-triggered beam measurement based on the beam measurement reference signal; and transmitting a resource scheduling request to the base station, wherein the resource scheduling request comprises an indication of event-triggering status of a plurality of specific cells. 2.The method of claim 1, further comprising: obtaining an event-driven beam management indication from the base station, wherein the event-driven beam management indication indicates whether one or more cells support event-driven beam management, and wherein the one or more cells comprise the plurality of specific cells. The event-driven beam management indication comprises: a first indication parameter indicating whether a primary cell in an active cell belongs to the plurality of specific cells; and a second indication bitmap or list indicating whether a secondary cell in the active cell belongs to the plurality of specific cells. 4.The method of claim 2, wherein: the event-driven beam management indication is carried by at least a medium access control (MAC) control element (CE), and the MAC CE indicates whether a secondary cell in an active cell belongs to the plurality of specific cells. 5.The method of claim 4, wherein: the MAC CE further indicates whether a primary cell in the active cell belongs to the plurality of specific cells. The plurality of specific cells are one of: all configured cells; cells in all configured cells that support event-driven beam reporting; all active cells; and cells in all active cells that support event-driven beam reporting. The resource scheduling request comprises cell quantity information indicating a quantity of cells in the plurality of specific cells that have triggered events corresponding to a plurality of events.

3. The method of claim 2, wherein, The resource scheduling request comprises event quantity information indicating a total quantity of events in the plurality of specific cells that have been triggered. 9.The method of claim 1, wherein: the resource scheduling request is multiplexed with other uplink control information (UCI) on a physical uplink control channel (PUCCH). 10.The method of claim 9, wherein: in a UCI sequence, bits of the resource scheduling request are after bits of hybrid automatic repeat request (HARQ) and before bits of channel state information (CSI). 11.The method of claim 9, wherein: in a UCI sequence, bits of the resource scheduling request are after bits of hybrid automatic repeat request (HARQ) and before bits of another resource scheduling request contained in the other UCI. 12.The method of claim 1, wherein: the resource scheduling request is multiplexed on a physical uplink shared channel (PUSCH). In a resource reservation order and mapping order of the PUSCH: 1) hybrid automatic repeat request (HARQ) and the resource scheduling request; 2) other information, wherein the other information comprises channel state information (CSI) and / or event-driven beam information. In a resource reservation order and mapping order of the PUSCH: 1) hybrid automatic repeat request (HARQ) ; 2) the resource scheduling request; 6. The method of claim 1, wherein, ​ ​ ​ ​ ​ 7. The method of claim 1, wherein, ​ 8. The method of claim 1, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ 13. The method of claim 12, wherein, ​ ​ ​ 14. The method of claim 12, wherein, ​ ​ ​ 3) other information, wherein the other information comprises channel state information (CSI) and / or event-driven beam information.

15. The method of claim 12, wherein, In the resource reservation order and mapping order of the PUSCH are: 1) hybrid automatic repeat request (HARQ), the resource scheduling request, and configured grant uplink control information (CG-UCI) or uplink transmission opportunity indication information (UTO-UCI) not used; 2) other information, wherein the other information comprises channel state information (CSI) and / or event-driven beam information.

16. The method of claim 1, further comprising: sending an event-triggered beam message to a base station, the event-triggered beam message indicating a beam corresponding to a cell having an event trigger in the plurality of specific cells.

17. The method of claim 16, wherein: the event-triggered beam message contains at least one of cell information, event information, and beam information, wherein: the cell information indicates whether there is an event trigger in the plurality of specific cells; the event information indicates a triggering event corresponding to a cell having an event trigger in the plurality of specific cells; and the beam information indicates a beam corresponding to a cell having an event trigger in the plurality of specific cells.

18. The method of claim 17, wherein: the cell information or the event information is indicated in the form of a bitmap.

19. The method of claim 16, wherein: the event-triggered beam information is multiplexed with aperiodic channel state information (CSI) on a physical uplink shared channel (PUSCH).

20. The method of claim 19, further comprising: obtaining an event-triggered downlink control information from the base station, the event-triggered downlink control information indicating whether the PUSCH is used to carry the event-triggered beam message.

21. A beam management method performed by a base station, comprising: sending a beam measurement reference signal to a user equipment (UE), wherein the beam measurement reference signal is used by the UE to determine whether there is an event-triggered beam measurement report in a plurality of specific cells; and receiving a resource scheduling request from the UE, wherein the resource scheduling request includes an indication of an event-triggered condition of the plurality of specific cells.

22. The method of claim 21, further comprising: sending a support event-driven beam management indication to the UE, the beam management indication indicating whether one or more cells support event-driven beam management, the one or more cells including the plurality of specific cells.

23. The method of claim 22, wherein, the beam management indication includes: a first indication parameter indicating whether a primary cell in an active cell belongs to the plurality of specific cells; and a second indication bitmap or list indicating whether a secondary cell in the active cell belongs to the plurality of specific cells.

24. The method of claim 22, wherein: the beam management indication is carried at least by a specified medium access control layer control element (MAC CE), and the specified MAC CE is used to indicate whether a secondary cell in an active cell belongs to the plurality of specific cells.

25. The method of claim 24, wherein: The beam management indication is carried at least by a medium access control layer control element (MAC CE), and the MAC CE is used to indicate whether a secondary cell in an active cell belongs to the multiple specific cells.

26. The method of claim 21, wherein, The multiple specific cells are one of the following: All configured cells; Cells in all configured cells that support event-driven beam reporting; All active cells; Cells in all active cells that support event-driven beam reporting.

27. The method of claim 21, wherein, The resource scheduling request includes cell quantity information, and the cell quantity information is used to indicate the quantity of cells in the multiple specific cells that have triggered events respectively corresponding to the multiple events.

28. The method of claim 21, wherein, The resource scheduling request includes event quantity information, and the event quantity information is used to indicate the total quantity of events that have been triggered in the multiple specific cells.

29. The method of claim 21, wherein, The resource scheduling request is multiplexed with other uplink control information on a physical uplink control channel (PUCCH).

30. The method of claim 21, wherein, The resource scheduling request is multiplexed on a physical uplink shared channel (PUSCH).

31. The method of claim 21, further comprising: receiving, from the UE, an event-triggered beam message used to indicate beams corresponding to cells in the multiple specific cells that have triggered events.

32. The method of claim 31, wherein, The event-triggered beam message at least includes at least one of cell information, event information, and beam information, wherein: The cell information is used to indicate whether there is an event triggered in the multiple specific cells; The event information is used to indicate triggered events corresponding to cells in the multiple specific cells that have triggered events; The beam information is used to indicate beams corresponding to cells in the multiple specific cells that have triggered events.

33. The method of claim 32, wherein, The cell information or the event information is indicated in the form of a bitmap.

34. The method of claim 31, wherein, The event-triggered beam information is multiplexed with aperiodic channel state information (CSI) on a physical uplink shared channel (PUSCH).

35. The method of claim 34, further comprising: sending, to the UE, event-triggered downlink control information used to indicate whether the PUSCH is used to carry the event-triggered beam message.

36. A communication device comprising a processor and a memory, the memory being configured to store program instructions that, when executed by the processor, implement the method described in any one of claims 1 to 35.

37. A readable storage medium for storing program instructions, wherein, The program instructions, when executed by the processor, implement the method described in any one of claims 1 to 35.

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