Beam management methods and apparatuses

Abstract

This disclosure provides a beam management method and apparatus. The method includes: a terminal device receiving first indication information sent by a base station; wherein the first indication information indicates a change in the beam state of a base station beam; and in response to determining a change in the beam state of the base station beam based on the first indication information, re-measuring the pilot signal corresponding to the base station beam to obtain measurement results, and reporting the measurement results to the base station. By implementing this disclosure, the base station can proactively send first indication information to the terminal device to indicate a change in the beam state of the base station beam, eliminating the need for the terminal device to perform downlink measurements, determine beam failure, and then report the beam failure discovery process. This reduces transmission latency and signaling overhead.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a beam management method and apparatus. Background Technology

[0002] Multi-antenna technology is widely used in wireless communication systems to improve system performance. For example, third-generation (3G) cellular mobile communication systems use multi-antenna systems to provide diversity or beamforming gain. In fourth-generation long-term evolution (4G LTE) and fifth-generation new radio (5G NR) systems, multi-antenna arrays are widely used to achieve spatial diversity, spatial multiplexing, or beamforming to improve the system's data transmission rate or service coverage.

[0003] In existing multi-antenna technology or large-scale array antenna technology, the antenna configuration is usually fixed by default. However, there is a lack of effective beam management methods for situations where the antenna configuration can be changed and the beam state of the base station beam changes. Summary of the Invention

[0004] This disclosure provides a beam management method and apparatus that, when the antenna configuration of a base station changes and the beam state of the base station beam changes, can solve the problems of high signaling overhead and long transmission delay associated with methods that use related technologies, such as terminal equipment initiating beam failure recovery processes or sending uplink SRS for base station measurement and beam adjustment. This reduces signaling overhead and transmission delay, and improves system performance.

[0005] In a first aspect, embodiments of this disclosure provide a beam management method applied to a terminal device. The method includes: receiving first indication information sent by a base station; wherein the first indication information is used to indicate that the beam state of a base station beam has changed; in response to determining that the beam state of the base station beam has changed according to the first indication information, re-measuring the pilot signal corresponding to the base station beam to obtain a measurement result, and reporting the measurement result to the base station.

[0006] In this technical solution, the base station can actively send a first indication message to the terminal device to indicate that the beam state of the base station beam has changed, so as to inform the terminal device. The terminal device does not need to perform downlink measurement, determine beam failure, and then report the beam failure. This can reduce transmission latency and signaling overhead.

[0007] Secondly, embodiments of this disclosure provide another beam management method applied to a base station. The method includes: sending first indication information to a terminal device; wherein the first indication information is used to indicate that the beam state of the base station beam has changed; receiving a measurement result reported by the terminal device; wherein the measurement result is obtained by the terminal device re-measuring the pilot signal corresponding to the base station beam in response to determining that the beam state of the base station beam has changed according to the first indication information.

[0008] Thirdly, embodiments of this disclosure provide a communication device that implements some or all of the functions of the terminal device described in the first aspect above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of any one embodiment in this disclosure implemented individually. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0009] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions described in the above method. The transceiver module supports communication between the communication device and other devices. The communication device may also include a storage module, coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the communication device.

[0010] As an example, the processing module can be a processor, the transceiver module can be a transceiver or a communication interface, and the storage module can be a memory.

[0011] In one implementation, the communication device includes: a receiving module for receiving first indication information sent by a base station; wherein the first indication information is used to indicate a change in the beam state of a base station beam; and a transmitting module for re-measuring the pilot signal corresponding to the base station beam in response to determining, based on the first indication information, that the beam state of the base station beam has changed, to obtain a measurement result, and reporting the measurement result to the base station.

[0012] Fourthly, embodiments of this disclosure provide another communication device that implements some or all of the functions of the network device in the method example described in the second aspect above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of any one embodiment in this disclosure implemented individually. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0013] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions described in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is coupled to the transceiver module and the processing module, and stores the necessary computer programs and data of the communication device.

[0014] In one implementation, the communication device includes: a transmitting module for transmitting first indication information to a terminal device; wherein the first indication information is used to indicate a change in the beam state of a base station beam; and a receiving module for receiving a measurement result reported by the terminal device; wherein the measurement result is obtained by the terminal device in response to determining, based on the first indication information, that the beam state of the base station beam has changed, and by re-measuring the pilot signal corresponding to the base station beam.

[0015] Fifthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

[0016] In a sixth aspect, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the second aspect above.

[0017] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first aspect above.

[0018] Eighthly, embodiments of this disclosure provide a communication device including a processor and a memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the second aspect above.

[0019] Ninthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the first aspect above.

[0020] In a tenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the second aspect above.

[0021] Eleventhly, embodiments of this disclosure provide a beam management system, which includes the communication device described in the third aspect and the communication device described in the fourth aspect, or the communication device described in the fifth aspect and the communication device described in the sixth aspect, or the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0022] In a twelfth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions for use by the aforementioned terminal device, which, when executed, cause the terminal device to perform the method described in the first aspect.

[0023] In a thirteenth aspect, embodiments of the present invention provide a readable storage medium for storing instructions used by the aforementioned base station, which, when executed, cause the network device to perform the method described in the second aspect.

[0024] In a fourteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0025] In a fifteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above.

[0026] In a sixteenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a terminal device in implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the terminal device. The chip system may be composed of chips or may include chips and other discrete devices.

[0027] In a seventeenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a base station in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the base station. The chip system may be composed of chips or may include chips and other discrete devices.

[0028] In an eighteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0029] In a nineteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0031] Figure 1 This is an architecture diagram of a communication system provided in an embodiment of this disclosure;

[0032] Figure 2 This is a flowchart of a beam management method provided in an embodiment of this disclosure;

[0033] Figure 3 This is a flowchart of another beam management method provided in this embodiment of the disclosure;

[0034] Figure 4 This is a flowchart of yet another beam management method provided in this disclosure embodiment;

[0035] Figure 5 This is a flowchart of yet another beam management method provided in this disclosure embodiment;

[0036] Figure 6 This is a flowchart of yet another beam management method provided in this disclosure embodiment;

[0037] Figure 7 This is a flowchart of another system beam management method provided in the embodiments of this disclosure;

[0038] Figure 8 This is a structural diagram of a communication device provided in an embodiment of this disclosure;

[0039] Figure 9 This is a structural diagram of another communication device provided in an embodiment of this disclosure;

[0040] Figure 10 This is a structural diagram of another communication device provided in the embodiments of this disclosure;

[0041] Figure 11 This is a schematic diagram of the structure of a chip provided in an embodiment of this disclosure. Detailed Implementation

[0042] To better understand the beam management method and apparatus disclosed in this disclosure, the communication system to which this disclosure applies will be described first.

[0043] Please see Figure 1 , Figure 1This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure. The communication system may include, but is not limited to, a network device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown is an example including a base station 101 and a terminal device 102.

[0044] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems. It should also be noted that the side link in this disclosure can also be referred to as a side link or a direct link.

[0045] In this embodiment of the disclosure, base station 101 is a network-side entity used for transmitting or receiving signals. For example, base station 101 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of this disclosure do not limit the specific technology or device form used in the network equipment. The network equipment provided in this embodiment can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure allows the protocol layer of a network device, such as a base station, to be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0046] The terminal device 102 in this disclosure is a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal device can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. This disclosure does not limit the specific technology or device form used in the terminal device.

[0047] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0048] In related technologies, such as multi-antenna technology or massive MIMO antenna technology, the antenna configuration is typically fixed by default. For example, in 5G NR systems, the antenna beam direction and propagation characteristics are mainly changed through analog beamforming and digital beamforming, but the range of change is limited by the fixed antenna configuration. Base stations and terminal devices use beam management processes to maintain optimal transmit and receive beam pairs (or beam correspondence). During initial access, the terminal device needs to determine the optimal downlink beam and then initiate random access using the random access resources corresponding to that beam. The initial beam pair can be established using the pre-determined correspondence between the random access resources and the downlink beam. When the wireless propagation environment changes or the terminal moves, causing a deterioration in the performance of the original beam pair, beam adjustment can be used to change the beam pair. When a drastic change occurs in the wireless channel, making beam adjustment impossible, a beam failure recovery process can be used to reselect beam pairing. Since changes in the wireless propagation environment occur independently for each terminal device within the cell, in a 5G NR system, each terminal device needs to independently perform downlink measurement and reporting of the beam, or independently send an SRS (Sounding Reference Signal) for measurement by the base station to perform beam adjustment. Furthermore, the beam failure recovery process is initiated independently by the terminal device.

[0049] When the antenna configuration changes, the beam from the corresponding antenna equipment to all terminal devices in the entire cell may change. If existing technologies are still used in this situation, a large number of terminal devices within the cell's coverage area may initiate beam adjustment or beam failure recovery processes. There is a certain delay from downlink measurement and beam failure determination to terminal device reporting; that is, the beam failure recovery process requires time, which increases the system's transmission latency. Furthermore, due to the large number of terminal devices involved, a large number of simultaneous signaling events may occur, causing control channel congestion and affecting system performance. New beam management technologies are urgently needed to solve the beam management problem under changing antenna configurations.

[0050] Based on this, this disclosure provides a beam management method to achieve beam management when the antenna configuration changes or the beam state of the base station beam changes, thereby reducing transmission latency and improving system performance.

[0051] In wireless communication systems employing multi-antenna technology and with customizable antenna configurations, such as in 5G NR systems, the Transmission and Reception Point (TRP) of a base station typically uses a specific antenna configuration and corresponding beamforming parameters to ensure that the TRP's wireless signal transmission and reception can cover or serve a specific spatial area. Various connection methods can be used between antenna elements and transceiver radio frequency units to achieve hybrid beamforming of analog and digital beamforming. The service area of ​​one or more TRPs forms a cell, and analog beamforming is usually the primary factor determining the cell's coverage. Typically, analog beamforming uses wide beams with a large coverage area, with one cell corresponding to one analog beam. In millimeter-wave and other frequency bands, beamforming technology can also be used to form multiple beams in different directions. These beams are narrower but have a longer propagation distance. These beams form a beam group, and the beams within the group can be transmitted alternately using time-division multiplexing. Within a time period, through beam sweeping, they collectively serve the coverage area of ​​a cell. A downlink beam is typically associated with an SSB (Synchronization Signal Block) or CSI-RS (Channel State Information-Reference Signal). When using beam scanning, a TRP can be configured with N beams, and the terminal device can also be configured with M beams, where M and N are positive integers. Transmit and receive beams form a beam pair. Clearly, there are many possible combinations of beam pairs, among which the best-performing or optimal beam pair is used for data signal transmission, improving service. Note that the beams here belong to the TRP, and they form the best-performing or optimal beam pair with a specific beam from the terminal device.

[0052] The base station periodically transmits SSBs, which include the PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), and PBCH (Physical Broadcast Channel). Different downlink beams (usually analog beams) correspond to different SSBs. In 5G NR, the transmission period of SSBs can be 5, 10, 20, 40, 80, or 160 milliseconds, etc. If beam scanning is used, then the above period is the transmission period of one beam. The minimum transmission interval between multiple beams can be 5ms. Before accessing a cell, the terminal device needs to detect the PSS and SSS, and then obtain the SSB number information by receiving and decoding the PBCH. Based on the correspondence between the SSB number and random access resources, after selecting a cell and a beam, the terminal device initiates random access to the base station on the appropriate random access resources, thereby establishing the initial beam pairing. Once the random access procedure is successful and the RRC (Radio Resource Control) connection is established, the terminal device assumes that the base station will use the same analog beam as the selected beam for subsequent wireless signal transmission and reception. The terminal device will also continue to use the receiving beam used during the random access procedure to receive wireless signals. Considering channel reciprocity, the same beam can also be used for uplink signal transmission.

[0053] In RRC connected state, the terminal device measures multiple transmit beams from the TRP based on the SSB or CSI-RS information configured by the base station. Following the reporting configuration, it reports the measurement results to the base station, including the beam number and parameters representing beam performance (e.g., RSRP (Reference Signal Receive Power) or RSRQ (Reference Signal Receiving Quality)). The terminal device can also use different receive beams to measure the RSRP or RSRQ of the reference signal for the same transmit beam to determine the receive beam; this receive beam can be the preferred or optimal receive beam. For uplink transmission, the optimal downlink beam can be directly paired for uplink based on uplink-downlink channel reciprocity, or the terminal device can transmit SRS. The base station selects the preferred or optimal uplink receive beam by measuring the SRS. When the wireless signal propagation environment changes or the terminal moves, the preferred or optimal beam reported by the terminal device may change, or the preferred or optimal beam determined by SRS measurement may change. In this scenario, the base station can change the beam to provide service to the terminal device. Note that the best or optimal beam reported by the terminal device may be one or more, depending on the channel state and system configuration. The base station can select a beam from the best or optimal beams reported by the terminal device, or combine other factors to select a beam to provide service to that terminal device. Currently, the 5G NR protocol supports the base station configuring multiple beams for the terminal device through Radio Resource Control (RRC) messages. The CE (Control Element) of the MAC (Media Access Control) can further indicate a subset of candidate beams. The DCI (Downlink Control Information) transmitted in the PDCCH (Physical Downlink Control Channel) can indicate the beam ultimately used for data signal transmission. In the 5G NR standard, beam indication is actually the correspondence between the PDCCH or PDSCH (physical downlink shared channel) and the SSB or CSI-RS, that is, indicating that the PDCCH or PDSCH uses the same analog beam as a certain SSB or CSI-RS. This correspondence is represented by the TCI (Transmission Configuration Indication) state.

[0054] If a drastic change in the wireless channel prevents the timely beam adjustment methods described above from being used, a beam failure recovery process can be employed to reselect beam pairing. If the RSRP or RSRQ of the SSB or CSI-RS falls below a pre-configured threshold, the terminal device considers this a beam failure instance. When multiple beam failure instances exceed a certain threshold consecutively, the terminal device can initiate a beam failure recovery process. In this case, the terminal device needs to re-determine a beam pairing and initiate a random access request to the base station via the random access channel. Because the random access channel resources and beams have a pre-defined relationship, the base station can determine the better or optimal beam selected by the terminal device and use that beam for subsequent communication.

[0055] In this embodiment of the disclosure, a beam management method is provided. When the antenna configuration of the base station changes, the beam state of the base station beam changes. This method can solve the problems of high signaling overhead and long transmission delay caused by using related technologies to initiate a beam failure recovery process or send uplink SRS for the base station to measure and adjust the beam. This reduces signaling overhead and transmission delay, and improves system performance.

[0056] Please see Figure 2 , Figure 2 This is a flowchart of a beam management method provided in an embodiment of this disclosure.

[0057] like Figure 2 As shown, this method is applied to a terminal device, and the method may include, but is not limited to, the following steps:

[0058] S21: Receive first indication information sent by the base station; wherein the first indication information is used to indicate that the beam state of the base station beam has changed.

[0059] Based on the above discussion, it can be seen that in related technologies, when the antenna shape changes and the beam state of the base station beam changes, the terminal device initiates a beam adjustment or beam failure recovery process. On the one hand, it takes a certain amount of time for the terminal device to initiate the beam adjustment or beam failure recovery process, which will increase the transmission latency of the system. On the other hand, when the beam state of the base station beam changes, there are a large number of terminal devices in the cell served by the base station, which will simultaneously cause a large number of signaling events, resulting in control channel congestion and thus affecting system performance.

[0060] In this embodiment of the disclosure, the base station is supported to actively send a first indication information to the terminal device to indicate that the beam state of the base station beam has changed, so that the terminal device does not need to perform downlink measurement, determine beam failure, and then report to detect beam failure.

[0061] It is understandable that the base station can predict changes in antenna configuration and beam state. Based on this, in this embodiment, the base station actively sends a first indication message to the terminal device to indicate that the beam state of the base station beam has changed, so as to inform the terminal device. The terminal device does not need to perform downlink measurement, determine beam failure, and then report the beam failure process, which can reduce transmission latency and signaling overhead.

[0062] In some embodiments, the change in the beam state of the base station beam is caused by a change in the antenna configuration of the base station.

[0063] It is understandable that when the antenna configuration of a base station changes, the beam of the antenna equipment of the base station to all terminal devices in the cell served by the base station may change.

[0064] In this embodiment of the disclosure, the change in the beam state of the base station beam is caused by the change in the antenna configuration of the base station. Furthermore, the first indication information sent by the base station to the terminal device can also indicate that the antenna configuration of the base station has changed, thereby indicating that the beam state of the base station beam has changed.

[0065] It is understandable that changes in antenna configuration alter the state of the original analog shaped beam, which can also be seen as a change in the transmission of the corresponding SSB or CSI-RS, thus rendering measurements based on the original SSB or CSI-RS ineffective in the future. Simultaneously, the PDCCH or PDSCH transmissions associated with the SSB or CSI-RS, indicated by TCI, will also change, causing the original beam pairing to no longer be optimal. Therefore, this first indication information can also indicate that the current beam has changed, or that the current beam is about to fail (after the beam change, the original measurement results and / or beam pairing relationships become invalid). When the cell served by the base station is configured with beam scanning, this first indication information can indicate the overall state of beam change or failure, without distinguishing between individual beams, and can also indicate separately which beams have changed or failed after the antenna configuration change.

[0066] In some embodiments, the first indication information is used to indicate a change in the beam state of the base station beam, including at least one of the following:

[0067] The first indication information is used to indicate that the current beam of the base station has changed;

[0068] The first indication information is used to indicate the current beam failure of the base station;

[0069] The first indication information is used to indicate that all current beams of the base station have changed;

[0070] The first indication information is used to indicate that all beams of the base station are currently out of service;

[0071] The first indication information is used to indicate that a portion of the base station's beam has changed.

[0072] The first indication information is used to indicate that a portion of the base station's beams are currently unavailable.

[0073] In this embodiment of the disclosure, the first indication information is used to indicate that the current beam of the base station has changed or failed, or to indicate that all current beams have changed or failed, or to indicate that some current beams have changed or failed. Here, the current beam refers to the beam used by the base station to communicate with the UE. All beams refer to the beams used by the base station to communicate with all UEs. Some beams may or may not include the current beam used by the base station to communicate with the UE. Of course, if it indicates that all current beams have failed, then all current beams must include the current beam used by the base station to communicate with the UE.

[0074] In some embodiments, the first indication information may be used to indicate that the beam state of all or part of the base station beam remains unchanged.

[0075] It is understood that, in this embodiment of the disclosure, the first indication information may be used to indicate that the current beam of the base station remains unchanged, or to indicate that all current beams remain unchanged, or to indicate that some current beams remain unchanged.

[0076] In some embodiments, the first indication information includes at least: a bit map for indicating the beam state of a base station beam; wherein, one bit in the bit map corresponds to one beam of the base station, and is used to indicate whether the beam state of the corresponding beam changes or remains unchanged.

[0077] In this embodiment of the disclosure, the first indication information includes at least a bitmap for indicating the beam state of a base station beam, wherein the bitmap includes at least one bit, and one bit in the bitmap corresponds to one or more beams of the base station, used to indicate whether the beam state of the corresponding beam changes or remains unchanged. In this embodiment of the disclosure, one bit in the bitmap corresponding to one or more beams of the base station means that one bit in the bitmap may correspond to multiple beams of the base station, and / or one bit in the bitmap may correspond to one beam of the base station. For example, one bit in the bitmap corresponds to the current beam of the base station, and one bit corresponds to a portion of the current beams of the base station (e.g., beams other than the current beam); another example is that one bit in the bitmap corresponds to the current beam of the base station, and one bit corresponds to the first group of beams of the base station, and another bit corresponds to the second group of beams of the base station, and so on. Of course, these are merely illustrative examples and not intended to limit the technical solution of this disclosure.

[0078] It is understandable that a change in the beam state of a base station beam may cause the original measurement results and / or pairing relationship of the terminal equipment to become invalid, and the beam state of the base station beam to become invalid.

[0079] For example, the bitmap includes at least one bit, where a bit is used with 0 and 1 to indicate whether the beam state of the corresponding beam changes or remains unchanged. For instance, when the bit is 1, it indicates that the beam state of the corresponding beam remains unchanged; when the bit is 0, it indicates that the beam state of the corresponding beam changes or becomes ineffective. Or conversely, in the above example, a bit of 1 could also indicate that the beam state of the corresponding beam changes or becomes ineffective, and a bit of 0 could indicate that the beam state of the corresponding beam remains unchanged.

[0080] It is understandable that there are multiple beams in the cell served by the base station. One bit in the bit map corresponds to one beam of the base station. Thus, the first indication information including the bit map can indicate whether the beam state of the multiple beams of the base station has changed or remains unchanged.

[0081] In some embodiments, a bit in the bit map corresponds to a beam of the base station, including: when the corresponding beam is a beam measured based on a synchronization signal block (SSB), a bit in the bit map corresponds to an SSB number.

[0082] In some embodiments, a bit in the bit map corresponds to a beam of the base station, including: when the corresponding beam is a beam that is measured based on the Channel State Information Reference Signal (CSI-RS), a bit in the bit map corresponds to a CSI-RS number.

[0083] For example, the bitmap includes at least one bit. This bit can be used to indicate at least one of the following states:

[0084] When the corresponding beam is a beam measured based on the synchronization signal block (SSB), one bit in the bit diagram corresponds to one SSB number; and

[0085] When the corresponding beam is a beam that is measured based on the Channel State Information Reference Signal (CSI-RS), one bit in the bit diagram corresponds to one CSI-RS number, which is used to indicate whether the beam state of the beam corresponding to the SSB number or the CSI-RS number has changed or remained unchanged.

[0086] One bit is used to indicate whether the beam state of the corresponding beam changes or remains unchanged. When the bit is 1, it indicates that the beam state of the corresponding beam remains unchanged. When the bit is 0, it indicates that the beam state of the corresponding beam changes or becomes invalid, or vice versa.

[0087] In some embodiments, the first indication information is a list; wherein the list is used to indicate information about beams in the base station beams whose beam states have changed. For example, the information about the beam can be at least one of the following: the beam number corresponding to the changed beam, or the CSI-RS resource number corresponding to the changed beam, or the changed beam or its corresponding SSB number.

[0088] In this embodiment of the disclosure, the first indication information is a list indicating the beams in the base station beams whose beam states have changed. For example, the list indicates the beam number corresponding to the beam whose beam state has changed, or the CSI-RS resource number corresponding to the beam whose beam state has changed, or the SSB number corresponding to the beam whose beam state has changed.

[0089] It is understandable that there are multiple beams in the cell served by the base station. The information of the beams whose beam states have changed is summarized by a list. The list can include the beam number corresponding to the beam whose beam state has changed, or if the corresponding beam is a beam measured based on the Synchronization Signal Block (SSB), the list can include the SSB number corresponding to the beam whose beam state has changed, or if the corresponding beam is a beam measured based on the Channel State Information Reference Signal (CSI-RS), the list can include the CSI-RS resource number corresponding to the beam whose beam state has changed.

[0090] S22: In response to the determination that the beam state of the base station beam has changed according to the first indication information, the pilot signal corresponding to the base station beam is remeasured to obtain the measurement result, and the measurement result is reported to the base station.

[0091] In this implementation, the terminal device, upon receiving the first indication information, immediately remeasures the pilot signal corresponding to the base station beam to obtain the measurement result and reports the measurement result to the base station. In one possible implementation, the first moment can be the moment the first indication information is received or any moment after receiving the first indication information. That is, in response to receiving the first indication information, the terminal device remeasures the pilot signal corresponding to the base station beam to obtain the measurement result and reports the measurement result to the base station.

[0092] The beam management method provided in this embodiment can remeasure the pilot signal corresponding to the base station beam at a first moment. This first moment can be determined by the UE, meaning the method includes: the terminal device determining the first moment.

[0093] Of course, in the technical solutions of this disclosure, a remeasurement can be performed at the first moment of receiving the first instruction information or at any moment after the first moment to obtain the measurement result.

[0094] In some embodiments, the first moment can also be determined based on a base station or a communication protocol. That is, determining the first moment includes: determining the first moment according to a predefined first duration; or, receiving second indication information sent by the base station; wherein the second indication information carries information about the first duration; and determining the first moment according to the second indication information.

[0095] In some possible implementations, the first duration can be represented using time units specified by the wireless communication system, such as time slots, symbols, or subframes. Alternatively, the first duration can also be represented using the timing duration of a timer.

[0096] In this embodiment of the disclosure, the predefined first duration can be a first duration determined according to the communication protocol.

[0097] The second instruction information can be an RRC broadcast message or a dedicated message, etc.

[0098] In some embodiments, the first duration may be greater than zero. Therefore, determining the first moment includes: determining the first moment as the moment the first indication information is received, plus the first duration. The first duration may be equal to zero. Therefore, determining the first moment includes: determining the first moment as the moment the first indication information is received.

[0099] Of course, in the technical solutions of this disclosure, a remeasurement can be performed at the first moment or at any moment after the first moment to obtain the measurement result.

[0100] In this embodiment of the present disclosure, the terminal device can determine the first moment based on a predefined first duration or information about the first duration carried in the second indication information sent by the base station. In an exemplary embodiment, if the predefined first duration or the first duration indicated by the second indication information of the base station is 3 time slots, then the first moment is determined to be the moment when the first indication information is received, plus 3 time slots.

[0101] In this embodiment of the present disclosure, when the terminal device receives the first indication information sent by the base station and determines that the beam state of the base station beam has changed, it remeasures the pilot signal corresponding to the base station beam at a time no earlier than the first moment after receiving the first indication information, so as to obtain the measurement result and report the measurement result to the base station.

[0102] To ensure that when the terminal device receives the first indication information and remeasures the base station beam, the base station has already completed the beam state change of the base station beam, in this embodiment of the present disclosure, after the terminal device receives the first indication information, it remeasures the pilot signal corresponding to the base station beam no earlier than the first moment after receiving the first indication information. At this time, it can be guaranteed that the terminal device remeasures the beam after the base station has changed.

[0103] Therefore, in this embodiment of the present disclosure, the base station sends a first indication information to the terminal device. The first indication information indicates that the beam state of the base station beam has changed. It can be understood that the base station can change the beam state of the base station beam at the same time as sending the first indication information, or it can change the beam state of the base station beam after a period of time. The base station changes the beam state of the base station beam no later than the first moment.

[0104] Among them, the pilot signal corresponding to the base station beam that is remeasured is: SSB, or CSI-RS.

[0105] It should be noted that in this embodiment of the present disclosure, the first indication information can indicate which part of the base station beam has changed its beam state. In this case, the terminal device can remeasure only the part of the base station beam that has changed as indicated by the first indication information.

[0106] In this embodiment, the terminal device remeasures the pilot signal corresponding to the base station beam to obtain the measurement result and reports the measurement result to the base station. The base station selects a beam based on the measurement result reported by the terminal device and configures it according to the TCI status information in the original RRC message, notifying the terminal device of the beam using MAC CE or PDCCH DCI (in one mode, notifying the TCI information). If the change in antenna configuration causes the configuration parameters in the RRC message (e.g., at least one of the following parameters: SSB configuration or CSI-RS resource configuration, TCI configuration) to also need to be changed, the base station initiates an RRC reconfiguration process. For example, it can use an RRCReconfiguration message to send the new SSB configuration or CSI-RS resource configuration, or the original TCI configuration, to the terminal device. If, according to the original RRC message configuration, the terminal device cannot find a beam that meets the reported configuration, the terminal device selects a suitable random access resource and initiates a random access process to the base station according to the relationship between the random access resource and the beam configured in the RRC message. The base station uses the relationship between random access resources and beams, or the beam selected by the terminal device, as the optimal beam for subsequent data or signaling transmission.

[0107] In this embodiment of the present disclosure, the terminal device receives first indication information sent by the base station. The first indication information indicates a change in the beam state of the base station beam. In response to determining a change in the beam state of the base station beam based on the first indication information, the terminal device remeasures the pilot signal corresponding to the base station beam at a first moment after receiving the first indication information to obtain the measurement result, and then reports the measurement result to the base station. This embodiment of the present disclosure supports the base station actively sending the first indication information to the terminal device to indicate a change in the beam state of the base station beam, thereby informing the terminal device. This eliminates the need for the terminal device to perform downlink measurements, determine beam failure, and then report the beam failure discovery process, thus reducing transmission latency and signaling overhead. Specifically, "the base station actively sending the first indication information to the terminal device" means that this process is initiated by the base station, rather than based on a request from the UE.

[0108] Please see Figure 3 , Figure 3 This is a flowchart of another beam management method provided in an embodiment of this disclosure.

[0109] like Figure 3 As shown, this method is applied to a terminal device, and the method may include, but is not limited to, the following steps:

[0110] S31: Receive first indication information sent by the base station through System Information Block (SIB), Master Information Block (MIB), or paging message; wherein the first indication information is used to indicate that the beam state of the base station beam has changed.

[0111] In this embodiment of the disclosure, the base station can send the first indication information through the System Information Block (SIB), the Master Information Block (MIB), or a paging message.

[0112] In some embodiments, the change in the beam state of the base station beam is caused by a change in the antenna configuration of the base station.

[0113] The first instruction information can be referred to in the description of the relevant embodiments of this disclosure, and will not be repeated here.

[0114] S32: In response to determining that the beam state of the base station beam has changed according to the first indication information, remeasure the pilot signal corresponding to the base station beam to obtain the measurement result, and report the measurement result to the base station.

[0115] It should be noted that the descriptions of S31 and S32 in the embodiments of this disclosure can be found in the descriptions of S21 and S22 in the examples above, and will not be repeated here.

[0116] In this embodiment of the present disclosure, the terminal device receives first indication information sent by the base station. The first indication information indicates a change in the beam state of the base station beam. Based on the first indication information, if the beam state of the base station beam has changed, the terminal device remeasures the pilot signal corresponding to the base station beam no earlier than the moment after receiving the first indication information to obtain the measurement result, and then reports the measurement result to the base station. This embodiment of the present disclosure supports the base station actively sending first indication information to the terminal device to indicate a change in the beam state of the base station beam, thereby informing the terminal device. This eliminates the need for the terminal device to perform downlink measurements, determine beam failure, and then report the beam failure discovery process, thus reducing transmission latency and signaling overhead.

[0117] Please see Figure 4 , Figure 4 This is a flowchart of another beam management method provided in the embodiments of this disclosure.

[0118] like Figure 4 As shown, this method is applied to a terminal device, and the method may include, but is not limited to, the following steps:

[0119] S41: Determine that the base station has the capability to change its antenna configuration.

[0120] In this embodiment of the disclosure, the terminal device can determine whether the base station has the ability to change the antenna configuration, thereby knowing that the TRP of the cell served by the base station has the ability to change the antenna configuration and may dynamically change the beam state of the base station beam.

[0121] In one possible implementation, the terminal device can determine whether the base station has the capability to change its antenna configuration based on whether it receives a first indication message from the base station. In response to receiving the first indication message and determining that the base station has the capability to change its antenna configuration, the base station may dynamically change the beam state of its base station beam. In response to not receiving the first indication message from the base station, it is determined that the base station does not have the capability to change its antenna configuration, and the beam state of the base station beam will not change.

[0122] In some embodiments, the terminal device can determine that the base station has the capability to change its antenna configuration based on third indication information sent by the base station; wherein the third indication information is used to indicate that the base station has the capability to change its antenna configuration. In one possible implementation, the terminal device can assume that the base station does not have the capability to change its antenna configuration; then, in response to receiving the third indication information sent by the base station, it can determine that the base station has the capability to change its antenna configuration. Or conversely, the terminal device can assume that the base station has the capability to change its antenna configuration.

[0123] The third indication information can be an RRC broadcast message or a dedicated message. The base station can send the third indication information through an RRC broadcast message or a dedicated message to indicate that the base station has the ability to change its antenna configuration.

[0124] It should be noted that S41 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S21 and S22 and / or S31 and S32 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0125] Please see Figure 5 , Figure 5 This is a flowchart of another beam management method provided in the embodiments of this disclosure.

[0126] like Figure 5 As shown, this method is applied to a base station, and the method may include, but is not limited to, the following steps:

[0127] S51: Send first indication information to the terminal device; wherein the first indication information is used to indicate that the beam state of the base station beam has changed.

[0128] Based on the above discussion, it can be seen that in related technologies, when the antenna shape changes and the beam state of the base station beam changes, the terminal device initiates a beam adjustment or beam failure recovery process. On the one hand, it takes a certain amount of time for the terminal device to initiate the beam adjustment or beam failure recovery process, which will increase the transmission latency of the system. On the other hand, when the beam state of the base station beam changes, there are a large number of terminal devices in the cell served by the base station, which will simultaneously cause a large number of signaling events, resulting in control channel congestion and thus affecting system performance.

[0129] In this embodiment of the disclosure, the first indication information is further used to instruct the terminal device to remeasure based on the pilot signal corresponding to the base station beam to obtain the measurement result. That is, in response to determining that the beam state of the base station beam has changed according to the first indication information, the terminal device remeasures the pilot signal corresponding to the base station beam to obtain the measurement result, and reports the measurement result to the base station. The first time can be the time when the first indication information is received or any time after receiving the first indication information.

[0130] In this embodiment of the disclosure, the base station is supported to actively send a first indication information to the terminal device to indicate that the beam state of the base station beam has changed, so that the terminal device does not need to perform downlink measurement, determine beam failure, and then report to detect beam failure.

[0131] It is understandable that the base station can predict changes in antenna configuration and beam state. Based on this, in this embodiment, the base station actively sends a first indication message to the terminal device to indicate that the beam state of the base station beam has changed, so as to inform the terminal device. The terminal device does not need to perform downlink measurement, determine beam failure, and then report the beam failure process, which can reduce transmission latency and signaling overhead.

[0132] In some embodiments, the change in the beam state of the base station beam is caused by a change in the antenna configuration of the base station.

[0133] It is understandable that when the antenna configuration of a base station changes, the beam of the antenna equipment of the base station to all terminal devices in the cell served by the base station may change.

[0134] In this embodiment of the disclosure, the change in the beam state of the base station beam is caused by the change in the antenna configuration of the base station. Furthermore, the first indication information sent by the base station to the terminal device can also indicate that the antenna configuration of the base station has changed, thereby indicating that the beam state of the base station beam has changed.

[0135] It is understandable that changes in antenna configuration alter the state of the original analog shaped beam, which can also be seen as a change in the transmission of the corresponding SSB or CSI-RS, thus rendering measurements based on the original SSB or CSI-RS ineffective in the future. Simultaneously, the PDCCH or PDSCH transmissions associated with the SSB or CSI-RS, indicated by TCI, will also change, causing the original beam pairing to no longer be optimal. Therefore, this first indication information can also indicate that the current beam has changed, or that the current beam is about to fail (after the beam change, the original measurement results and / or beam pairing relationships become invalid). When the cell served by the base station is configured with beam scanning, this first indication information can indicate the overall state of beam change or failure, without distinguishing between individual beams, and can also indicate separately which beams have changed or failed after the antenna configuration change.

[0136] In some embodiments, the first indication information is used to indicate a change in the beam state of the base station beam, including at least one of the following:

[0137] The first indication information is used to indicate that the current beam of the base station has changed;

[0138] The first indication information is used to indicate the current beam failure of the base station;

[0139] The first indication information is used to indicate that all current beams of the base station have changed;

[0140] The first indication information is used to indicate that all beams of the base station are currently out of service;

[0141] The first indication information is used to indicate that a portion of the base station's beam has changed.

[0142] The first indication information is used to indicate that a portion of the base station's beams are currently unavailable.

[0143] In this embodiment of the disclosure, the first indication information is used to indicate that the current beam of the base station has changed or failed, or to indicate that all current beams have changed or failed, or to indicate that some current beams have changed or failed.

[0144] In some embodiments, the first indication information is further used to indicate that the beam state of all or part of the base station beam remains unchanged.

[0145] It is understood that, in this embodiment of the disclosure, the first indication information may be used to indicate that the current beam of the base station remains unchanged, or to indicate that all current beams remain unchanged, or to indicate that some current beams remain unchanged.

[0146] In some embodiments, the first indication information includes at least: a bit map for indicating the beam state of a base station beam; wherein, one bit in the bit map corresponds to one beam of the base station, and is used to indicate whether the beam state of the corresponding beam changes or remains unchanged.

[0147] In this embodiment of the disclosure, the first indication information includes at least a bitmap for indicating the beam state of a base station beam. The bitmap includes at least one bit, wherein one bit in the bitmap corresponds to one or more beams of the base station, indicating whether the beam state of the corresponding beam changes or remains unchanged. In this embodiment of the disclosure, one bit in the bitmap corresponding to one or more beams of the base station means that one bit in the bitmap may correspond to multiple beams of the base station, and / or one bit in the bitmap may correspond to one beam of the base station. For example, one bit in the bitmap corresponds to the current beam of the base station, and one bit corresponds to a portion of the current beams of the base station (e.g., beams other than the current beam); another example is that one bit in the bitmap corresponds to the current beam of the base station, one bit corresponds to the first group of beams of the base station, and another bit corresponds to the second group of beams of the base station, and so on. Of course, these are just examples and not limitations on the technical solution of this disclosure.

[0148] It is understandable that a change in the beam state of a base station beam will cause the original measurement results and / or pairing relationship of the terminal equipment to become invalid, and the beam state of the base station beam to become invalid.

[0149] For example, the bitmap includes at least one bit, wherein a bit is used with 0 and 1 to indicate whether the beam state of the corresponding beam changes or remains unchanged. When the bit is 1, it indicates that the beam state of the corresponding beam remains unchanged; when the bit is 0, it indicates that the beam state of the corresponding beam changes or becomes ineffective. Or conversely, in the above example, a bit of 1 can also indicate that the beam state of the corresponding beam changes or becomes ineffective, and a bit of 0 can indicate that the beam state of the corresponding beam remains unchanged.

[0150] It is understandable that there are multiple beams in the cell served by the base station. One bit in the bit map corresponds to one or more beams of the base station, so that the beam state of the multiple beams of the base station can be indicated by the first indication information including the bit map, whether the beam state changes or remains unchanged.

[0151] In some embodiments, a bit in the bitmap corresponds to a beam of the base station, including: when the corresponding beam is a beam measured based on a Synchronization Signal Block (SSB), a bit in the bitmap corresponds to an SSB number. In some embodiments, a bit in the bitmap corresponds to a beam of the base station, including: when the corresponding beam is a beam measured based on a Channel State Information Reference Signal (CSI-RS), a bit in the bitmap corresponds to a CSI-RS number.

[0152] For example, the bit diagram includes at least one bit. When the corresponding beam is a beam measured based on a Synchronization Signal Block (SSB), one bit in the bit diagram corresponds to an SSB number. When the corresponding beam is a beam measured based on a Channel State Information Reference Signal (CSI-RS), one bit in the bit diagram corresponds to a CSI-RS number, used to indicate whether the beam state of the beam corresponding to the SSB number or CSI-RS number has changed or remained unchanged. Specifically, a bit uses 0 and 1 to indicate whether the beam state of the corresponding beam has changed or remained unchanged. When the bit is 1, it indicates that the beam state of the corresponding beam remains unchanged; when the bit is 0, it indicates that the beam state of the corresponding beam has changed or failed.

[0153] In this embodiment of the disclosure, the first indication information is a list indicating the beams in the base station beams whose beam states have changed. For example, the list indicates the beam number corresponding to the beam whose beam state has changed, or the CSI-RS resource number corresponding to the beam whose beam state has changed, or the SSB number corresponding to the beam whose beam state has changed.

[0154] It is understandable that there are multiple beams in the cell served by the base station. By summarizing the information of the beams whose beam states have changed in the base station beams in a list, the list can count the beam number corresponding to the beam whose beam state has changed, or if the corresponding beam is a beam measured based on the Synchronization Signal Block (SSB), the list can count the SSB number corresponding to the beam whose beam state has changed, or if the corresponding beam is a beam measured based on the Channel State Information Reference Signal (CSI-RS), the list can count the CSI-RS resource number corresponding to the beam whose beam state has changed.

[0155] S52: Receive the measurement results reported by the terminal device; wherein the measurement results are obtained by the terminal device in response to the determination of a change in the beam state of the base station beam according to the first indication information, and re-measure the pilot signal corresponding to the base station beam.

[0156] In some embodiments, the beam management method provided in this disclosure further includes: sending second indication information to a terminal device, wherein the second indication information carries information about a first duration.

[0157] In this embodiment of the disclosure, the second indication information is used to instruct the terminal device to determine the first moment based on the first duration information carried in the second indication information sent by the base station.

[0158] The first duration can be represented using time units specified by the wireless communication system, such as time slots, symbols, or subframes. Alternatively, the first duration can also be represented using the timing duration of a timer.

[0159] The second instruction information can be an RRC broadcast message or a dedicated message, etc.

[0160] In some embodiments, the first duration is greater than or equal to zero, and the second indication information indicates that the first moment is the moment when the first indication information is received, plus the first duration.

[0161] Of course, the first moment and / or the first duration can be determined according to the communication protocol, or determined by the terminal device itself.

[0162] In this embodiment of the present disclosure, the terminal device can determine the first moment based on the first duration information carried in the second indication information sent by the base station.

[0163] In the exemplary embodiment, if the first duration indicated by the second indication information of the base station is 3 time slots, then the first moment is determined to be the moment when the first indication information is received, plus 3 time slots. Of course, the first duration can also be represented by the timing duration of a timer.

[0164] In this embodiment of the present disclosure, when the terminal device receives the first indication information sent by the base station and determines that the beam state of the base station beam has changed, it remeasures the pilot signal corresponding to the base station beam at a time no earlier than the first moment after receiving the first indication information, so as to obtain the measurement result and report the measurement result to the base station.

[0165] In some embodiments, if a second time interval is reached after the first indication information is sent to the terminal device, the beam state of the beam transmitted by the base station is changed; wherein the second time interval is not later than the first time interval.

[0166] To ensure that when the terminal device receives the first indication information and remeasures the base station beam, the base station has already completed the beam state change of the base station beam, in this embodiment of the disclosure, after the base station sends the first indication information to the terminal device, it changes the beam state of the beam sent by the base station at a second time. The second time is no later than the first time, so that after the terminal device receives the first indication information, it remeasures the pilot signal corresponding to the base station beam at a time no earlier than the first time after receiving the first indication information. At this time, it can be guaranteed that the terminal device remeasures the beam that the base station has changed.

[0167] Therefore, in this embodiment of the present disclosure, the base station sends a first indication information to the terminal device. The first indication information indicates that the beam state of the base station beam has changed. It can be understood that the base station can change the beam state of the base station beam at the same time as sending the first indication information, or it can change the beam state of the base station beam after a period of time. The base station changes the beam state of the base station beam no later than the first moment.

[0168] Among these, the pilot signals corresponding to the base station beams are remeasured, including: SSB, or CSI-RS.

[0169] It should be noted that in this embodiment of the present disclosure, the first indication information can indicate which part of the base station beam has changed its beam state. In this case, the terminal device can remeasure only the part of the base station beam that has changed as indicated by the first indication information.

[0170] The first instruction information may also refer to the descriptions in the relevant embodiments of this disclosure, and the same descriptions will not be repeated here.

[0171] In this embodiment, the terminal device remeasures the pilot signal corresponding to the base station beam to obtain the measurement result and reports the measurement result to the base station. Based on the measurement result reported by the terminal device, the base station selects a beam and configures it according to the TCI status information in the original RRC message, using MAC CE or PDCCH DCI to notify the terminal device of the beam (actually, notifying it of the TCI information). If a change in antenna configuration necessitates a change in the SSB configuration, CSI-RS resource configuration, or the original TCI configuration in the RRC message, the base station initiates an RRC reconfiguration process. For example, it can use an RRCReconfiguration message to send the new SSB configuration, CSI-RS resource configuration, or the original TCI configuration to the terminal device. If, according to the original RRC message configuration, the terminal device cannot find a beam that meets the reported configuration, the terminal device selects a suitable random access resource and initiates a random access procedure to the base station according to the relationship between the random access resource and the beam configured in the RRC message. The base station then uses the selected beam as the beam for subsequent data or signaling transmission based on the relationship between the random access resource and the beam, or the beam selected by the terminal device.

[0172] In this embodiment of the present disclosure, the terminal device receives first indication information sent by the base station. The first indication information indicates a change in the beam state of the base station beam. Based on the first indication information, if the beam state of the base station beam has changed, the terminal device remeasures the pilot signal corresponding to the base station beam no earlier than the moment after receiving the first indication information to obtain the measurement result, and then reports the measurement result to the base station. This embodiment of the present disclosure supports the base station actively sending first indication information to the terminal device to indicate a change in the beam state of the base station beam, thereby informing the terminal device. This eliminates the need for the terminal device to perform downlink measurements, determine beam failure, and then report the beam failure discovery process, thus reducing transmission latency and signaling overhead.

[0173] Please see Figure 6 , Figure 6 This is a flowchart of another beam management method provided in the embodiments of this disclosure.

[0174] like Figure 6 As shown, this method is applied to a base station, and the method may include, but is not limited to, the following steps:

[0175] S61: Send a first indication message to the terminal device via System Information Block (SIB), Master Information Block (MIB), or paging message; wherein the first indication message is used to indicate that the beam state of the base station beam has changed.

[0176] In this embodiment of the disclosure, the base station can send the first indication information through the System Information Block (SIB), the Master Information Block (MIB), or a paging message.

[0177] The first instruction information may also refer to the descriptions in the relevant embodiments of this disclosure, and the same descriptions will not be repeated here.

[0178] S62: Receive the measurement results reported by the terminal device; wherein the measurement results are obtained by the terminal device in response to the determination of a change in the beam state of the base station beam according to the first indication information, and re-measure the pilot signal corresponding to the base station beam.

[0179] In some embodiments, the beam management method provided in this disclosure further includes: sending second indication information to a terminal device, wherein the second indication information carries information about a first duration.

[0180] In some embodiments, the first duration is greater than or equal to zero, and the second indication information indicates that the first moment is the moment when the first indication information is received, plus the first duration.

[0181] In some embodiments, if a second time interval is reached after the first indication information is sent to the terminal device, the beam state of the beam transmitted by the base station is changed; wherein the second time interval is not later than the first time interval.

[0182] It should be noted that the descriptions of S61 and S62 in the embodiments of this disclosure can be found in the descriptions of S51 and S52 in the examples above, and will not be repeated here.

[0183] The descriptions of the first moment in this disclosure can also be referenced in the relevant embodiments, and the same descriptions will not be repeated here. Similarly, the descriptions of the first duration in this disclosure can also be referenced in the relevant embodiments, and the same descriptions will not be repeated here.

[0184] In this embodiment of the present disclosure, the terminal device receives first indication information sent by the base station. The first indication information indicates a change in the beam state of the base station beam. Based on the first indication information, if the beam state of the base station beam has changed, the terminal device remeasures the pilot signal corresponding to the base station beam no earlier than the moment after receiving the first indication information to obtain the measurement result, and then reports the measurement result to the base station. This embodiment of the present disclosure supports the base station actively sending first indication information to the terminal device to indicate a change in the beam state of the base station beam, thereby informing the terminal device. This eliminates the need for the terminal device to perform downlink measurements, determine beam failure, and then report the beam failure discovery process, thus reducing transmission latency and signaling overhead.

[0185] Please see Figure 7 , Figure 7 This is a flowchart of another beam management method provided in the embodiments of this disclosure.

[0186] like Figure 7As shown, this method is applied to a base station, and the method may include, but is not limited to, the following steps:

[0187] S71: Send a third indication message to the terminal device; wherein the third indication message is used to indicate that the base station has the ability to change the antenna configuration; or, the third indication message is used to indicate that the base station does not have the ability to change the antenna configuration.

[0188] The third indication information can be an RRC broadcast message or a dedicated message. The base station can send the third indication information through an RRC broadcast message or a dedicated message to indicate that the base station has the ability to change its antenna configuration.

[0189] In this embodiment of the disclosure, the terminal device can determine whether the base station has the capability to change its antenna configuration, thereby knowing that the TRP of the cell served by the base station has the capability to change its antenna configuration, and may dynamically change the beam state of the base station beam. In one possible implementation, the terminal device can assume that the base station does not have the capability to change its antenna configuration; then, in response to receiving the third indication information sent by the base station, it can determine that the base station has the capability to change its antenna configuration. Or conversely, the terminal device can assume that the base station has the capability to change its antenna configuration.

[0190] The third instruction information may also refer to the descriptions in the relevant embodiments of this disclosure, and the same descriptions will not be repeated here.

[0191] The terminal device can determine whether the base station has the ability to change its antenna configuration based on whether it receives the first indication information sent by the base station. If the first indication information is received, it is determined that the base station has the ability to change its antenna configuration, and the base station may dynamically change the beam state of the base station beam. If the first indication information is not received from the base station, it is determined that the base station does not have the ability to change its antenna configuration, and the beam state of the base station beam will not change.

[0192] It should be noted that S71 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S51 and S52 and / or S61 and S62 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0193] In the embodiments provided above, the methods provided by the present disclosure are described from the perspectives of a base station and a terminal device, respectively. To implement the functions of the methods provided in the embodiments of the present disclosure, the network device and the terminal device may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions can be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0194] Please see Figure 8 In the embodiments provided above, the methods provided by the present disclosure have been described from the perspectives of a base station and a terminal device, respectively. To implement the functions of the methods provided in the embodiments of the present disclosure, the base station and the terminal device may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions may be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0195] Please refer to Figure 13, which is a schematic diagram of the structure of a communication device 1 provided in an embodiment of this disclosure. The communication device 1 shown in Figure 13 may include a transmitting module 11 and a receiving module 12. The transmitting module 11 is used to implement the transmitting function, and the receiving module 12 is used to implement the receiving function.

[0196] Communication device 1 can be a terminal device, a device within a terminal device, or a device compatible with a terminal device. Alternatively, communication device 1 can be a base station, a device within a base station, or a device compatible with a base station.

[0197] The communication device 1 is a terminal device, including a transmitting module 11 and a receiving module 12.

[0198] The receiving module 12 is used to receive first indication information sent by the base station; wherein the first indication information is used to indicate that the beam state of the base station beam has changed.

[0199] The transmitting module 11 is configured to, in response to determining that the beam state of the base station beam has changed according to the first indication information, remeasure the pilot signal corresponding to the base station beam to obtain the measurement result, and report the measurement result to the base station.

[0200] In some embodiments, the receiving module 12 is further configured to receive first indication information sent by the base station through the System Information Block (SIB), the Master Information Block (MIB), or a paging message.

[0201] In some embodiments, the first indication information is used to indicate a change in the beam state of the base station beam, including at least one of the following:

[0202] The first indication information is used to indicate that the current beam of the base station has changed;

[0203] The first indication information is used to indicate the current beam failure of the base station;

[0204] The first indication information is used to indicate that all current beams of the base station have changed;

[0205] The first indication information is used to indicate that all beams of the base station are currently out of service;

[0206] The first indication information is used to indicate that a portion of the base station's beam has changed.

[0207] The first indication information is used to indicate that a portion of the base station's beams are currently unavailable.

[0208] In this embodiment of the disclosure, the first indication information is used to indicate that the current beam of the base station has changed or failed, or to indicate that all current beams have changed or failed, or to indicate that some current beams have changed or failed. Here, the current beam refers to the beam used by the base station to communicate with the UE. All beams refer to the beams used by the base station to communicate with all UEs. Some beams may or may not include the current beam used by the base station to communicate with the UE. Of course, if it indicates that all current beams have failed, then all current beams must include the current beam used by the base station to communicate with the UE.

[0209] In some embodiments, the first indication information may be used to indicate that the beam state of all or part of the base station beam remains unchanged.

[0210] It is understood that, in this embodiment of the disclosure, the first indication information may be used to indicate that the current beam of the base station remains unchanged, or to indicate that all current beams remain unchanged, or to indicate that some current beams remain unchanged.

[0211] In some embodiments, the first indication information includes at least: a bit map for indicating the beam state of a base station beam; wherein, one bit in the bit map corresponds to one beam of the base station, and is used to indicate whether the beam state of the corresponding beam changes or remains unchanged.

[0212] In this embodiment of the disclosure, the first indication information includes at least a bitmap for indicating the beam state of a base station beam, wherein the bitmap includes at least one bit, and one bit in the bitmap corresponds to one or more beams of the base station, used to indicate whether the beam state of the corresponding beam changes or remains unchanged. In this embodiment of the disclosure, one bit in the bitmap corresponding to one or more beams of the base station means that one bit in the bitmap may correspond to multiple beams of the base station, and / or one bit in the bitmap may correspond to one beam of the base station. For example, one bit in the bitmap corresponds to the current beam of the base station, and one bit corresponds to a portion of the current beams of the base station (e.g., beams other than the current beam); another example is that one bit in the bitmap corresponds to the current beam of the base station, and one bit corresponds to the first group of beams of the base station, and another bit corresponds to the second group of beams of the base station, and so on. Of course, these are merely illustrative examples and not intended to limit the technical solution of this disclosure.

[0213] The first instruction information may also refer to the descriptions in the relevant embodiments of this disclosure, and the same descriptions will not be repeated here.

[0214] like Figure 9 As shown, the communication device 1 also includes a processing module 13.

[0215] In some embodiments, the processing module 13 is used to determine that the base station has the capability of changing antenna configuration.

[0216] In some embodiments, the receiving module 12 is further configured to receive third indication information sent by the base station; wherein the third indication information is used to indicate that the base station has the capability of changing antenna configuration.

[0217] Communication device 1 is a base station: The device includes a transmitting module 11 and a receiving module 12.

[0218] The sending module 11 is used to send first indication information to the terminal device; wherein the first indication information is used to indicate that the beam state of the base station beam has changed.

[0219] The receiving module 12 is used to receive the measurement results reported by the terminal device; wherein the measurement results are obtained by the terminal device in response to determining that the beam state of the base station beam has changed according to the first indication information, and re-measuring the pilot signal corresponding to the base station beam.

[0220] In some embodiments, the change in the beam state of the base station beam is caused by a change in the antenna configuration of the base station.

[0221] In some embodiments, the first indication information is used to indicate a change in the beam state of the base station beam, including at least one of the following:

[0222] The first indication information is used to indicate that the current beam of the base station has changed;

[0223] The first indication information is used to indicate the current beam failure of the base station;

[0224] The first indication information is used to indicate that all current beams of the base station have changed;

[0225] The first indication information is used to indicate that all beams of the base station are currently out of service;

[0226] The first indication information is used to indicate that a portion of the base station's beam has changed.

[0227] The first indication information is used to indicate that a portion of the base station's beams are currently unavailable.

[0228] In some embodiments, the first indication information includes: a bit map; wherein, one bit in the bit map corresponds to a beam of the base station, used to indicate whether the beam state of the corresponding beam changes or remains unchanged.

[0229] In some embodiments, one bit in the bit map corresponds to one beam of the base station, including: when the corresponding beam is a beam that is measured based on a synchronization signal block (SSB), one bit in the bit map corresponds to an SSB number; when the corresponding beam is a beam that is measured based on a channel state information reference signal (CSI-RS), one bit in the bit map corresponds to a CSI-RS number.

[0230] In this embodiment of the disclosure, the first indication information is a list indicating the beams in the base station beams whose beam states have changed. For example, the list indicates the beam number corresponding to the beam whose beam state has changed, or the CSI-RS resource number corresponding to the beam whose beam state has changed, or the SSB number corresponding to the beam whose beam state has changed.

[0231] In some embodiments, the sending module 11 is further configured to send second indication information to the terminal device, the second indication information carrying information of a first duration; wherein the first duration is used to instruct the terminal device to determine a first moment for re-measuring the pilot signal corresponding to the base station beam.

[0232] In some embodiments, the first duration is greater than or equal to zero, and the second indication information is used to indicate that the first moment is the moment when the first indication information is received, plus the first duration.

[0233] Please continue reading Figure 9 The communication device 1 also includes a processing module 13.

[0234] In some embodiments, the processing module 13 is configured to change the beam state of the beam transmitted by the base station in response to a second time interval after sending the first indication information to the terminal device; wherein the second time interval is not later than the first time interval.

[0235] In some embodiments, the sending module 11 is further configured to send third indication information to the terminal device; wherein the third indication information is used to indicate that the base station has the capability to change the antenna configuration; or, the third indication information is used to indicate that the base station does not have the capability to change the antenna configuration.

[0236] Regarding the communication device 1 in the above embodiments, the specific methods by which each module performs its operations have been described in detail in the embodiments related to the method, and will not be elaborated upon here. The communication device 1 provided in the above embodiments of this disclosure achieves the same or similar beneficial effects as the communication methods provided in some of the above embodiments, and will not be repeated here.

[0237] Please see Figure 10 , Figure 10 This is a schematic diagram of another communication device 1000 provided in this embodiment. The communication device 1000 can be a base station, a terminal device, a chip, chip system, or processor that supports the base station in implementing the above methods, or a chip, chip system, or processor that supports the terminal device in implementing the above methods. This communication device 1000 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0238] The communication device 1000 can be a base station, a terminal device, a chip, chip system, or processor that supports the base station in implementing the above methods, or a chip, chip system, or processor that supports the terminal device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0239] The communication device 1000 may include one or more processors 1001. The processor 1001 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0240] Optionally, the communication device 1000 may further include one or more memories 1002, which may store a computer program 1004. The memories 1002 execute the computer program 1004 to cause the communication device 1000 to perform the methods described in the above method embodiments. Optionally, the memories 1002 may also store data. The communication device 1000 and the memories 1002 may be provided separately or integrated together.

[0241] Optionally, the communication device 1000 may further include a transceiver 1005 and an antenna 1006. The transceiver 1005 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1005 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0242] Optionally, the communication device 1000 may further include one or more interface circuits 1007. The interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001. The processor 1001 executes the code instructions to cause the communication device 1000 to perform the method described in the above method embodiments.

[0243] Communication device 1000 is a terminal device: transceiver 1005 is used to perform... Figure 2 S21 and S22 in the text; Figure 3 S31 and S32; processor 1001 is used to execute Figure 4 S41 in the middle.

[0244] Communication device 1000 is a base station; transceiver 1005 is used for execution. Figure 5 S51 and S52 in the text; Figure 6 S61 and S62; processor 1001 is used to execute Figure 7 S71 in the middle.

[0245] In one implementation, the processor 1001 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0246] In one implementation, processor 1001 may store computer program 1003, which runs on processor 1001 and causes communication device 1000 to execute the methods described in the above method embodiments. Computer program 1003 may be embedded in processor 1001, in which case processor 1001 may be implemented in hardware.

[0247] In one implementation, the communication device 1000 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide-semiconductor (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal-oxide-semiconductor (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0248] The communication device described in the above embodiments may be a terminal device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 10 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0249] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0250] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0251] (3) ASIC, such as modem;

[0252] (4) Modules that can be embedded in other devices;

[0253] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0254] (6) Others, etc.

[0255] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 11 This is a structural diagram of a chip provided in an embodiment of this disclosure.

[0256] Chip 1100 includes processor 1101 and interface 1103. The number of processors 1101 can be one or more, and the number of interfaces 1103 can be multiple.

[0257] Regarding the case where the chip is used to implement the functions of the terminal device in the embodiments of this disclosure:

[0258] Interface 1103 is used to receive code instructions and transmit them to the processor.

[0259] Processor 1101 is used to run code instructions to perform beam management methods as described in some of the embodiments above.

[0260] Regarding the use of the chip to implement the functions of the base station in the embodiments of this disclosure:

[0261] Interface 1103 is used to receive code instructions and transmit them to the processor.

[0262] Processor 1101 is used to run code instructions to perform beam management methods as described in some of the embodiments above.

[0263] Optionally, chip 1100 may also include memory 1102, which is used to store necessary computer programs and data.

[0264] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0265] This disclosure also provides a communication system, which includes the aforementioned... Figure 8 The embodiments include a communication device as a terminal device and a communication device as a base station, or the system includes the aforementioned... Figure 10 The embodiments include a communication device as a terminal device and a communication device as a base station.

[0266] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0267] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0268] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0269] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0270] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0271] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0272] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0273] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented 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 this disclosure.

[0274] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0275] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A beam management method, characterized in that, The method is applied to a terminal device, and the method includes: The receiver receives first indication information transmitted by the base station when the antenna configuration changes or the beam state of the base station beam changes; wherein the first indication information is used to indicate that the beam state of the base station beam has changed. In response to determining that the beam state of the base station beam has changed according to the first indication information, the pilot signal corresponding to the base station beam is remeasured at a first moment to obtain the measurement result, and the measurement result is reported to the base station; the first moment is the moment when the first indication information is received plus a first duration, the first duration being determined according to the communication protocol, or according to the second indication information sent by the base station; The method further includes: receiving third indication information sent by the base station; wherein the third indication information is used to indicate that the base station has the capability of changing antenna configuration; and determining that the base station has the capability of changing antenna configuration.

2. The method according to claim 1, characterized in that, The first indication information sent by the receiving base station includes: The system receives the first indication information sent by the base station through the System Information Block (SIB), the Master Information Block (MIB), or a paging message.

3. The method according to claim 1, characterized in that, The first indication information is used to indicate a change in the beam state of the base station beam, including at least one of the following: The first indication information is used to indicate that the current beam of the base station has changed; The first indication information is used to indicate that the current beam of the base station is in failure; The first indication information is used to indicate that all current beams of the base station have changed; The first indication information is used to indicate that all beams of the base station are currently out of service; The first indication information is used to indicate that a portion of the current beam of the base station has changed; The first indication information is used to indicate that a portion of the base station's beams are currently out of service.

4. The method according to any one of claims 1 to 3, characterized in that, The first indication information is used to indicate that the beam state of all or part of the base station beam remains unchanged.

5. The method according to claim 4, characterized in that, The first indication information includes at least a bitmap; wherein, one bit in the bitmap corresponds to one beam of the base station, and is used to indicate whether the beam state of the corresponding beam changes or remains unchanged.

6. The method according to claim 5, characterized in that, One bit in the bitmap corresponds to one beam of the base station, including at least one of the following: In response to the corresponding beam being a beam measured based on a synchronization signal block (SSB), one bit in the bit diagram corresponds to one SSB number; as well as In response to the corresponding beam being a beam measured based on the Channel State Information Reference Signal (CSI-RS), one bit in the bit map corresponds to one CSI-RS number.

7. The method according to claim 4, characterized in that, The first indication information includes at least a list; wherein the list indicates the beams in the base station beams whose beam states have changed.

8. The method according to claim 7, characterized in that, The list includes: the beam number corresponding to the beam whose beam state has changed in the base station beam; or, the CSI-RS resource number corresponding to the beam whose beam state has changed in the base station beam; or, the SSB number corresponding to the beam whose beam state has changed in the base station beam.

9. A beam management method, characterized in that, The method is applied to a base station, and the method includes: When the antenna configuration changes or the beam state of the base station beam changes, a first indication message is sent to the terminal device; wherein, the first indication message is used to indicate that the beam state of the base station beam has changed. The terminal device receives the measurement results reported by the terminal device; wherein the measurement results are obtained by the terminal device re-measuring the pilot signal corresponding to the base station beam at a first moment in response to the determination that the beam state of the base station beam has changed according to the first indication information; the first moment is the moment when the first indication information is received plus a first duration, the first duration being determined according to the communication protocol or according to the second indication information sent by the base station; The method further includes: sending third indication information to the terminal device; wherein the third indication information is used to indicate that the base station has the capability of changing antenna configuration; the third indication information is used by the terminal device to determine that the base station has the capability of changing antenna configuration.

10. The method according to claim 9, characterized in that, Sending the first instruction information to the terminal device includes: The first indication information is sent to the terminal device via System Information Block (SIB), Master Information Block (MIB), or paging message.

11. The method according to claim 9, characterized in that, The first indication information is used to indicate a change in the beam state of the base station beam, including one of the following: The first indication information is used to indicate that the current beam of the base station has changed; The first indication information is used to indicate that the current beam of the base station is in failure; The first indication information is used to indicate that all current beams of the base station have changed; The first indication information is used to indicate that all beams of the base station are currently out of service; The first indication information is used to indicate that a portion of the current beam of the base station has changed; The first indication information is used to indicate that a portion of the base station's beams are currently out of service.

12. The method according to any one of claims 9 to 11, characterized in that, The first indication information is also used to indicate that the beam state of all or part of the base station beam remains unchanged.

13. The method according to claim 12, characterized in that, The first indication information includes: a bit map; wherein, one bit in the bit map corresponds to one beam of the base station, used to indicate whether the beam state of the corresponding beam changes or remains unchanged.

14. The method according to claim 13, characterized in that, One bit in the bitmap corresponds to one beam of the base station, including: When the corresponding beam is a beam that is measured based on the synchronization signal block (SSB), one bit in the bit diagram corresponds to one SSB number. When the corresponding beam is a beam that is measured based on the Channel State Information Reference Signal (CSI-RS), one bit in the bit map corresponds to one CSI-RS number.

15. The method according to claim 14, characterized in that, The first indication information includes: a list; wherein the list indicates beams whose beam states have changed or remain unchanged among the beams transmitted by the base station.

16. The method according to claim 15, characterized in that, The list indicates the beam number corresponding to the beam whose beam state has changed or remained unchanged in the beams transmitted by the base station; or, indicates the CSI-RS resource number corresponding to the beam whose beam state has changed or remained unchanged in the beams transmitted by the base station; or, indicates the SSB number corresponding to the beam whose beam state has changed or remained unchanged in the beams transmitted by the base station.

17. A communication device, characterized in that, include: The receiving module is used to receive first indication information sent by the base station when the antenna configuration changes or the beam state of the base station beam changes; wherein the first indication information is used to indicate that the beam state of the base station beam has changed. The processing module is configured to, in response to determining that the beam state of the base station beam has changed according to the first indication information, remeasure the pilot signal corresponding to the base station beam at a first moment to obtain a measurement result; the first moment is the moment when the first indication information is received plus a first duration, the first duration being determined according to the communication protocol or according to the second indication information sent by the base station; The transmitting module is used to report the measurement results to the base station; The receiving module is further configured to receive third indication information sent by the base station; wherein the third indication information is used to indicate that the base station has the capability of changing antenna configuration; The processing module is also used to determine that the base station has the ability to change the antenna configuration.

18. A communication device, characterized in that, include: The transmitting module is used to transmit first indication information to the terminal device when the antenna configuration changes or the beam state of the base station beam changes; wherein the first indication information is used to indicate that the beam state of the base station beam has changed. A receiving module is configured to receive measurement results reported by the terminal device; wherein the measurement results are obtained by the terminal device in response to determining, based on the first indication information, that the beam state of the base station beam has changed, and by re-measuring the pilot signal corresponding to the base station beam at a first moment; the first moment is the moment when the first indication information is received plus a first duration, the first duration being determined according to a communication protocol or according to a second indication information sent by the base station; The sending module is further configured to send third indication information to the terminal device; wherein the third indication information is used to indicate that the base station has the capability of changing antenna configuration; the third indication information is also used by the terminal device to determine that the base station has the capability of changing antenna configuration.

19. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 1 to 8, or the processor executing the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 9 to 16.

20. A communication device, characterized in that, include: Processor and interface circuitry; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to execute the code instructions to perform the method as described in any one of claims 1 to 8, or to execute the code instructions to perform the method as described in any one of claims 9 to 16.

21. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 8 to be implemented, or when executed, cause the method of any one of claims 9 to 16 to be implemented.

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