Communication method, and terminal and network device

Abstract

The present disclosure relates to a communication method, and a terminal and a network device. The method comprises: a terminal first receiving first information associated with each transmit-receive point (TRP), then receiving a synchronization signal block (SSB) sent by each TRP, and finally determining a switching delay time for each target TCI state on the basis of at least one of each piece of first information and each SSB. Therefore, the problem of SSB overlapping in the case of multiple downlink control information (mDCI) when state switching is performed in a multiple-transmit-receive point (mTRP) on the basis of a media access control control element (MAC CE) is solved to a certain extent.

Description

Communication method, terminal and network equipment Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, a terminal, and a network device. Background Art

[0002] In the traditional Release-15 / 16 (Rel-15 / 16) protocol, the switching delay requirement of the Transmission Configuration Indication (TCI) state based on the Media Access Control Control Element (MAC CE) is set. A MAC CE TCI state transition command activates a TCI state, and time-frequency tracking is based on the synchronization signal block (SSB) of a transmit-receive point (TRP).

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a communication method, a terminal, and a network device, which to a certain extent solve the SSB overlap problem in the case of multiple downlink control information (mDCI) in the state switching based on MAC CE in multiple transmit-receive points (mTRP).

[0005] The embodiments of the present disclosure provide a communication method.

[0006] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, including:

[0007] receiving first information associated with each transmission reception point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state;

[0008] Receiving a synchronization signal block SSB sent by each of the TRPs;

[0009] Based on each of the first information and at least one item of each of the SSBs, the switching delay time of each of the target TCI states is determined, wherein the first SSBs sent by at least two TRPs in the multiple TRPs completely or partially overlap.

[0010] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, including:

[0011] Sending first information associated with each transmission reception point TRP, wherein the first information is used to activate the target transmission configuration indication TCI state;

[0012] Sending a synchronization signal block SSB via each of said TRPs;

[0013] Based on each of the first information and at least one item of each of the SSBs, the switching delay time of each of the target TCI states is determined, wherein the first SSBs sent by at least two TRPs in the multiple TRPs completely or partially overlap.

[0014] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0015] a transceiver module, configured to receive first information associated with each transmitting / receiving point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state;

[0016] The transceiver module is configured to receive a synchronization signal block SSB sent by each TRP;

[0017] A processing module is used to determine the switching delay time of each target TCI state based on each of the first information and at least one item in each of the SSBs, wherein the first SSBs sent by at least two TRPs in the multiple TRPs are completely or partially overlapped.

[0018] According to a fourth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0019] a transceiver module, configured to send first information associated with each transmission reception point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state;

[0020] The transceiver module is configured to send a synchronization signal block SSB through each of the TRPs;

[0021] A processing module is used to determine the switching delay time of each target TCI state based on each of the first information and at least one item in each of the SSBs, wherein the first SSBs sent by at least two TRPs in the multiple TRPs are completely or partially overlapped.

[0022] According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0023] one or more processors;

[0024] The processor is used to call instructions to enable the communication device to execute the processing method described in any one of the first aspect and the second aspect.

[0025] According to the sixth aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a terminal and a network device, wherein the terminal is configured to implement the processing method described in the first aspect, and the network device is configured to implement the processing method described in the second aspect.

[0026] According to the seventh aspect of the embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the processing method described in any one of the first and second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0028] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0029] 2A-2C are interactive schematic diagrams illustrating a communication method according to an embodiment of the present disclosure;

[0030] FIG2D is a schematic diagram of a time offset provided according to an embodiment of the present disclosure;

[0031] 3A-3E are flowcharts illustrating a communication method according to an embodiment of the present disclosure;

[0032] 4A-4E are flowcharts illustrating a communication method according to an embodiment of the present disclosure;

[0033] 5A-5D are schematic diagrams of a process for determining a target SSB according to an embodiment of the present disclosure;

[0034] FIG6A is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure;

[0035] FIG6B is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure;

[0036] FIG7A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure;

[0037] FIG7B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] The embodiments of the present disclosure provide a communication method.

[0039] In a first aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0040] receiving first information associated with each transmission reception point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state;

[0041] Receiving a synchronization signal block SSB sent by each of the TRPs;

[0042] Based on each of the first information and at least one item of each of the SSBs, the switching delay time of each of the target TCI states is determined, wherein the first SSBs sent by at least two TRPs in the multiple TRPs completely or partially overlap.

[0043] In the above embodiment, the switching delay time of the target TCI state is determined based on the first information and at least one item in the SSB, so that when each TRP in the multiple transmitting and receiving points mTRP sends the first information to the terminal separately, and the first SSBs sent by at least two TRPs partially or completely overlap, the terminal can accurately determine the switching delay time of the target TCI state of each TRP.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the receiving a synchronization signal block SSB sent by each TRP includes:

[0045] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0046] At least one of the time offsets is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the first arrival time of each first information, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0047] Receive the target SSB sent by each of the TRPs respectively.

[0048] In the above embodiment, when there is a large overlap between the first SSBs of at least two TRPs, the target SSB of each TRP is determined based on the arrival time of the first information of each TRP, so that the terminal can accurately receive the target SSB sent by each TRP.

[0049] In combination with some embodiments of the first aspect, in some embodiments, the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

[0050] In the above embodiment, the order of the target SSB of the TRP in its SSB sequence is determined by the order of the arrival time of the first information among all the arrival times of the first information. While ensuring that the terminal can accurately and reliably determine the target SSB of each TRP, the switching delay time of each target TCI state is minimized.

[0051] In combination with some embodiments of the first aspect, in some embodiments, the receiving a synchronization signal block SSB sent by each TRP includes:

[0052] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0053] At least one of the time offsets is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the second arrival time of the first SSB sent by each TRP, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0054] Receive the target SSB sent by each of the TRPs respectively.

[0055] In the above embodiment, when the time offset is greater than or equal to the time length of the cyclic prefix CP, or when the first SSBs sent by at least two TRPs completely overlap, the target SSB of each TRP is determined based on the arrival time of the first SSB, so that the terminal can accurately receive the target SSB sent by each TRP.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the second arrival time of the first SSB sent by the j-th TRP is the f-th among all second arrival times, and the target SSB of the j-th TRP is the f-th SSB in the SSB sequence sent by the j-th TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

[0057] In the above embodiment, the target SSB is determined based on the arrival time of the first SSB, which ensures that the terminal can accurately and reliably determine the target SSB of each TRP while minimizing the switching delay time of each target TCI state.

[0058] In combination with some embodiments of the first aspect, in some embodiments, determining the switching delay time of each target TCI state according to at least one item of each first information and each SSB includes:

[0059] determining a second arrival time of each of the target SSBs;

[0060] According to the second arrival time of each target SSB, the switching delay time of each target TCI state is determined.

[0061] In the above embodiment, the switching delay time of each target TCI state is determined based on the arrival time of each target SSB, thereby ensuring reliable communication with each TRP and avoiding the throughput loss caused by the target TCI state switching delay in the mTRP case.

[0062] In conjunction with some embodiments of the first aspect, in some embodiments, after determining the second arrival time of each target SSB, the method further includes:

[0063] The maximum switching delay time of the multiple target TCI states is determined according to the latest time among the second arrival times of the multiple target SSBs.

[0064] In the above embodiment, the maximum switching delay time of multiple target TCI states is determined based on the latest arrival time of multiple target SSBs, thereby avoiding the throughput loss caused by the target TCI state switching delay in the mTRP case.

[0065] In combination with some embodiments of the first aspect, in some embodiments, determining the switching delay time of each target TCI state according to at least one item of each first information and each SSB includes:

[0066] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0067] Each of the time offsets is less than the time length of the cyclic prefix CP, and the third arrival time of the first SSB sent by each of the TRPs is determined;

[0068] The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent by each TRP.

[0069] In the above embodiment, when the time offset between the first SSBs sent by multiple TRPs is less than the time length of the CP, since the terminal can receive most of the information in the first SSB of each TRP, it can determine the switching delay time of the target TCI state based on the arrival time of the first SSB of each TRP, thereby reducing the throughput loss caused by the target TCI state switching delay while ensuring reliable communication with each TRP.

[0070] In combination with some embodiments of the first aspect, in some embodiments, after determining the third arrival time of the first SSB sent by each of the TRPs, the method further includes:

[0071] The maximum switching delay time of the multiple target TCI states is determined according to the latest time among the third arrival times of the multiple first SSBs.

[0072] In the above embodiment, the maximum switching delay time of multiple target TCI states is determined based on the latest arrival time of multiple first SSBs, thereby avoiding the throughput loss caused by the target TCI state switching delay in the mTRP case.

[0073] In combination with some embodiments of the first aspect, in some embodiments, after determining the switching delay time of each target TCI state, the method further includes:

[0074] Based on the switching delay time of each target TCI state, a physical downlink control channel PDCCH message determined by each target TCI state is received.

[0075] In a second aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0076] Sending first information associated with each transmission reception point TRP, wherein the first information is used to activate the target transmission configuration indication TCI state;

[0077] Sending a synchronization signal block SSB via each of said TRPs;

[0078] Based on each of the first information and at least one item of each of the SSBs, the switching delay time of each of the target TCI states is determined, wherein the first SSBs sent by at least two TRPs in the multiple TRPs completely or partially overlap.

[0079] In conjunction with some embodiments of the second aspect, in some embodiments, sending a synchronization signal block SSB through each of the TRPs includes:

[0080] Determine the time offset between the first SSBs sent via each of the two TRPs;

[0081] At least one of the time offsets is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the first arrival time of each first information, wherein the target SSBs of different TRPs have different orders in the SSB sequence sent by them;

[0082] The target SSB is sent through each of the TRPs.

[0083] In combination with some embodiments of the second aspect, in some embodiments, the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

[0084] In conjunction with some embodiments of the second aspect, in some embodiments, sending a synchronization signal block SSB through each of the TRPs includes:

[0085] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0086] At least one of the time offsets is greater than or equal to the time length of the cyclic prefix (CP), or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the second arrival time of the first SSB sent by each TRP, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0087] The target SSB is sent through each of the TRPs.

[0088] In combination with some embodiments of the second aspect, in some embodiments, the second arrival time of the first SSB sent by the j-th TRP is the f-th among all second arrival times, and the target SSB of the j-th TRP is the f-th SSB in the SSB sequence sent by the j-th TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

[0089] In combination with some embodiments of the second aspect, in some embodiments, determining the switching delay time of each target TCI state according to at least one item of each first information and each SSB includes:

[0090] determining a second arrival time of each of the target SSBs;

[0091] According to the second arrival time of each target SSB, the switching delay time of each target TCI state is determined respectively.

[0092] In conjunction with some embodiments of the second aspect, in some embodiments, after determining the second arrival time of each target SSB, the method further includes:

[0093] The maximum switching delay time of the multiple target TCI states is determined according to the latest time among the second arrival times of the multiple target SSBs.

[0094] In combination with some embodiments of the second aspect, in some embodiments, determining the switching delay time of each target TCI state according to at least one item of each first information and each SSB includes:

[0095] Determine the time offset between the first SSBs sent via each of the two TRPs;

[0096] Each of the time offsets is less than the time length of the cyclic prefix CP, and a third arrival time of the first SSB sent through each of the TRPs is determined;

[0097] The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent through each TRP.

[0098] In conjunction with some embodiments of the second aspect, in some embodiments, after determining the third arrival time of the first SSB sent through each of the TRPs, the method further includes:

[0099] The maximum switching delay time of the multiple target TCI states is determined according to the latest time among the third arrival times of the multiple first SSBs.

[0100] In conjunction with some embodiments of the second aspect, in some embodiments, after determining the switching delay time of each target TCI state, the method further includes:

[0101] Based on the switching delay time of each target TCI state, a physical downlink control channel PDCCH message determined by the target TCI state is sent through each TRP.

[0102] In a third aspect, an embodiment of the present disclosure provides a terminal, wherein the terminal includes:

[0103] a transceiver module, configured to receive first information associated with each transmitting / receiving point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state;

[0104] The transceiver module is configured to receive a synchronization signal block SSB sent by each TRP;

[0105] A processing module is used to determine the switching delay time of each target TCI state based on each of the first information and at least one item in each of the SSBs, wherein the first SSBs sent by at least two TRPs in the multiple TRPs are completely or partially overlapped.

[0106] In conjunction with some embodiments of the third aspect, in some embodiments, the receiving a synchronization signal block SSB sent by each TRP includes:

[0107] The processing module is used to determine the time offset between the first SSBs sent by each two TRPs;

[0108] The processing module is configured to determine, when at least one of the time offsets is greater than or equal to the time length of a cyclic prefix (CP), or when the first SSBs sent by at least two TRPs completely overlap, a target SSB of each TRP according to a first arrival time of each of the first information, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0109] The transceiver module is used to receive the target SSB sent by each TRP respectively.

[0110] In combination with some embodiments of the third aspect, in some embodiments, the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

[0111] In conjunction with some embodiments of the third aspect, in some embodiments, the receiving a synchronization signal block SSB sent by each TRP includes:

[0112] The processing module is used to determine the time offset between the first SSBs sent by each two TRPs;

[0113] The processing module is configured to determine, based on the second arrival time of the first SSB sent by each TRP, a target SSB for each TRP when at least one of the time offsets is greater than or equal to the time length of a cyclic prefix (CP), or when the first SSBs sent by at least two TRPs completely overlap, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0114] The transceiver module is used to receive the target SSB sent by each TRP respectively.

[0115] In combination with some embodiments of the third aspect, in some embodiments, the second arrival time of the first SSB sent by the j-th TRP is the f-th among all second arrival times, and the target SSB of the j-th TRP is the f-th SSB in the SSB sequence sent by the j-th TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

[0116] In conjunction with some embodiments of the third aspect, in some embodiments, the processing module includes:

[0117] determining a second arrival time of each of the target SSBs;

[0118] According to the second arrival time of each target SSB, the switching delay time of each target TCI state is determined.

[0119] In conjunction with some embodiments of the third aspect, in some embodiments, after determining the second arrival time of each target SSB, the method further includes:

[0120] The processing module is used to determine the maximum switching delay time of the multiple target TCI states based on the latest time among the second arrival times of the multiple target SSBs.

[0121] In conjunction with some embodiments of the third aspect, in some embodiments, the processing module includes:

[0122] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0123] Each of the time offsets is less than the time length of the cyclic prefix CP, and the third arrival time of the first SSB sent by each of the TRPs is determined;

[0124] The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent by each TRP.

[0125] In conjunction with some embodiments of the third aspect, in some embodiments, after determining the third arrival time of the first SSB sent by each of the TRPs, the method further includes:

[0126] The processing module is used to determine the maximum switching delay time of the multiple target TCI states based on the latest time among the third arrival times of the multiple first SSBs.

[0127] In conjunction with some embodiments of the third aspect, in some embodiments, after determining the switching delay time of each target TCI state, the method further includes:

[0128] The transceiver module is configured to receive a physical downlink control channel (PDCCH) message determined by each target TCI state based on the switching delay time of each target TCI state.

[0129] In a fourth aspect, an embodiment of the present disclosure provides a network device, wherein the network device includes:

[0130] a transceiver module, configured to send first information associated with each transmission reception point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state;

[0131] The transceiver module is configured to send a synchronization signal block SSB through each of the TRPs;

[0132] A processing module is used to determine the switching delay time of each target TCI state based on each of the first information and at least one item in each of the SSBs, wherein the first SSBs sent by at least two TRPs in the multiple TRPs are completely or partially overlapped.

[0133] In conjunction with some embodiments of the fourth aspect, in some embodiments, sending a synchronization signal block SSB through each of the TRPs includes:

[0134] The processing module is configured to determine a time offset between the first SSBs sent by each of two TRPs;

[0135] The processing module is configured to determine, based on a first arrival time of each first information, a target SSB of each TRP when at least one of the time offsets is greater than or equal to a time length of a cyclic prefix (CP), or when first SSBs sent by at least two TRPs completely overlap, wherein the target SSBs of different TRPs have different orders in the SSB sequence sent therethrough;

[0136] The transceiver module is used to send the target SSB through each TRP.

[0137] In combination with some embodiments of the fourth aspect, in some embodiments, the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

[0138] In conjunction with some embodiments of the fourth aspect, in some embodiments, sending a synchronization signal block SSB through each of the TRPs includes:

[0139] The processing module is used to determine the time offset between the first SSBs sent by each two TRPs;

[0140] The processing module is configured to determine, based on the second arrival time of the first SSB sent by each TRP, a target SSB for each TRP when at least one of the time offsets is greater than or equal to the time length of a cyclic prefix (CP), or when the first SSBs sent by at least two TRPs completely overlap, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0141] The transceiver module is used to send the target SSB through each TRP.

[0142] In combination with some embodiments of the fourth aspect, in some embodiments, the second arrival time of the first SSB sent by the j-th TRP is the f-th among all second arrival times, and the target SSB of the j-th TRP is the f-th SSB in the SSB sequence sent by the j-th TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

[0143] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module includes:

[0144] determining a second arrival time of each of the target SSBs;

[0145] According to the second arrival time of each target SSB, the switching delay time of each target TCI state is determined respectively.

[0146] In conjunction with some embodiments of the fourth aspect, in some embodiments, after determining the third arrival time of each target SSB, the method further includes:

[0147] The processing module is used to determine the maximum switching delay time of the multiple target TCI states based on the latest time among the second arrival times of the multiple target SSBs.

[0148] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module includes:

[0149] Determine the time offset between the first SSBs sent via each of the two TRPs;

[0150] Each of the time offsets is less than the time length of the cyclic prefix CP, and a third arrival time of the first SSB sent through each of the TRPs is determined;

[0151] The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent through each TRP.

[0152] In conjunction with some embodiments of the fourth aspect, in some embodiments, after determining the third arrival time of the first SSB sent through each of the TRPs, the method further includes:

[0153] The processing module is used to determine the maximum switching delay time of the multiple target TCI states based on the latest time among the second arrival times of the multiple first SSBs.

[0154] In conjunction with some embodiments of the fourth aspect, in some embodiments, after determining the switching delay time of each target TCI state, the method further includes:

[0155] The transceiver module is used to send a physical downlink control channel PDCCH message determined by the target TCI state through each TRP based on the switching delay time of each target TCI state.

[0156] In a fifth aspect, an embodiment of the present disclosure proposes a terminal, which includes: one or more processors; wherein the processors are used to execute the optional implementation method of the first aspect.

[0157] In a sixth aspect, an embodiment of the present disclosure proposes a network device, which includes: one or more processors; wherein the processors are used to execute the optional implementation method of the second aspect.

[0158] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the optional implementation manner of the first aspect, and the network device is configured to execute the method described in the optional implementation manner of the second aspect.

[0159] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0160] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0161] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0162] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0163] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0164] The present disclosure provides a communication method. In some embodiments, the terms "communication method" and "information processing method" and "information transmission method" are interchangeable; the terms "communication device" and "information processing device" and "information transmission device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0165] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0166] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0167] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0168] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0169] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0170] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0171] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0172] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0173] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0174] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0175] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0176] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0177] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0178] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0179] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macrocell", "smallcell", "femtocell", "picocell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0180] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station (subscriber station), mobile unit (mobile unit), subscriber unit (subscribe runit), wireless unit (wireless unit), remote unit (remote unit), mobile device (mobile device), wireless device (wireless device), wireless communication device (wireless communication device), remote device (remoted device), mobile subscriber station (mobile subscriber station), access terminal (access terminal), mobile terminal (mobile terminal), wireless terminal (wireless terminal), remote terminal (remote terminal), handset (handset), user agent (user agent), mobile client (mobile client), client (client), etc.

[0181] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0182] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0183] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0184] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0185] As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0186] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, 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, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0187] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0188] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0189] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between network devices or within network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0190] In some embodiments, the access network device may be composed of a centralized unit (CU) and a distributed unit (DU), where the CU may also be referred to as a control unit. The CU-DU structure may be used to separate the protocol layers of the access network device, with some protocol layer functions centrally controlled by the CU and some or all of the remaining protocol layer functions distributed in the DU, which is then centrally controlled by the CU. For example, as shown in FIG1 , the access network device includes a CU 1021 and two DUs (TRPs) 1022 and 1023.

[0191] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0192] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0193] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0194] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G New Radio (NR), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (Ultra Mobile Broadband), and other technologies. Broadband (UMB), IEEE802.11 (Wi-Fi (registered trademark)), IEEE802.16 (WiMAX (registered trademark)), IEEE802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine-to-Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), systems using other communication methods, and next-generation systems based on them. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A with 5G, etc.) for application.

[0195] In the traditional Rel-15 / 16 MAC CE-based TCI state transition latency requirements, only one TCI state is activated in a MAC CE-based TCI state transition command, and time and frequency tracking is based on the SSB of a single TRP. For mDCI in an mTRP, each TRP sends a separate MAC CE command to the UE to activate the TCI state. When the SSBs partially or completely overlap, the two TCI activation procedures may become dependent.

[0196] FIG2A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0197] Step S2101 , the network device 102 sends first information to the terminal 101 .

[0198] In some embodiments, the network device 102 may be an access network device, or a centralized control unit CU in the access network device.

[0199] In some embodiments, the network device 102 sends the first information associated with each TRP to the terminal 101 through each TRP.

[0200] In some embodiments, terms such as "transmit-receive point TRP", "Transmit-Receive Point", "TRP", etc. can be used interchangeably.

[0201] In some embodiments, the name of the first information is not limited, and it can be, for example, "downlink control information", "Downlink Control Information", "DCI", "Media Access Control Control Element", "MAC CE command", etc.

[0202] In some embodiments, a first message is used to activate a target transmission configuration indication TCI state.

[0203] In some embodiments, terms such as "transmission configuration indication TCI", "Transmission Configuration Indication", "TCI", etc. can be used interchangeably.

[0204] In some embodiments, the terminal 101 receives first information associated with each transmission and reception point TRP sent by the network device 102.

[0205] In step S2102, the network device 102 and the terminal 101 determine the time offset between the first SSBs sent by each two TRPs.

[0206] Among them, terms such as "SSB", "Synchronization Signal Block", and "Synchronization Signal Block" can be used interchangeably.

[0207] In some embodiments, the name of the timing offset is not limited, and may be, for example, “timingoffset”.

[0208] In some embodiments, the time offset is used to indicate the amount of overlap between the first SSBs sent by each of the two TRPs. That is, the time offset is the time interval between the moment when the earlier of the two first SSBs is received by terminal 101 and the moment when the later SSB is received by terminal 101. FIG2D is a schematic diagram of a time offset according to an embodiment of the present disclosure. As shown in FIG2D , the time offset between the first SSB of TRP1 and the first SSB of TRP2 is represented by the two dashed lines.

[0209] In step S2103, when the time offset between the first SSBs respectively sent by at least two TRPs is less than the time length of the CP, the network device 102 and the terminal 101 determine that the first SSB of each TRP is its target SSB.

[0210] In some embodiments, terms such as "CP", "cyclic prefix", and "Cyclic Prefix" can be used interchangeably.

[0211] In some embodiments, when the time offset between the first SSBs sent by at least two TRPs is less than the time length of the CP, it can be considered that the overlapping part between the first SSBs sent by the at least two TRPs is very small, which does not affect the reliable transmission of valid information in the SSB. At this time, the first SSB of each TRP can be determined as the target SSB.

[0212] In step S2104, the network device 102 sends the target SSB through each TRP.

[0213] In some embodiments, the network device 102 sends the target SSB to the terminal 101 through each TRP.

[0214] In some embodiments, terminal 101 receives the target SSB sent by network device 102 through each TRP.

[0215] In step S2105, the network device 102 and the terminal 101 determine the switching delay time based on the third arrival time of the first SSB of each TRP.

[0216] In some embodiments, the network device 102 and the terminal 101 can determine the switching delay time of the target TCI state of each TRP based on the third arrival time of the target SSB of each TRP.

[0217] In some embodiments, the third arrival time is the time when the target SSB of each TRP arrives at the terminal 101.

[0218] In some embodiments, when the time offset between the first SSBs sent by at least two TRPs is less than the time length of the CP, it can be considered that the valid information of the first SSB sent by each TRP is not overlapped and can be received by the terminal 101. Therefore, the switching delay time of each target TCI state can be determined based on the third arrival time of the first SSB sent by each TRP.

[0219] For example, when there are two TRPs, and the time offset between the first SSBs sent by the two TRPs is less than the CP duration, the formula for determining the switching delay time of the target TCI states corresponding to the two TRPs can be unified as follows:

[0220] Where n is the time slot; T HARQ Timing between downlink data transmission and acknowledgment; For the decoding cycle; when the target TCI state is in the active TCI state list, TO k is 1, otherwise it is 0; T first-SSB The reception time of the first SSB; T SSB-proc is the SSB processing time, which can be a fixed constant, such as 2 milliseconds; NR slot length is the time slot length.

[0221] In some embodiments, the network device 102 and the terminal 101 can also determine the maximum switching delay time of multiple target TCI states based on the latest time of the third arrival of multiple first SSBs after determining the third arrival time of the first SSB sent through each TRP.

[0222] For example, there are two TRPs (TRP#1 and TRP#2). When the time offset between the first SSBs sent by the two TRPs is less than the CP duration, the formula for determining the switching delay time of the target TCI states corresponding to the two TRPs can be unified as follows:

[0223] Where n is the time slot; T HARQ Timing between downlink data transmission and acknowledgment; is the decoding cycle; TO k1 if the target TCI state is in the active TCI state list for PDSCH, otherwise 0; T first-SSB-TRP1 is the third reception time of the first SSB of TRP#1, T first-SSB-TRP2 The third reception time of the first SSB of TRP2; T SSB-proc To receive SSB first and then first-SSB The processing time can be a fixed constant, such as 2 milliseconds; NR slot length is the time slot length.

[0224] In some embodiments, the network device 102 and the terminal 101 may determine the switching delay time for each target TCI state, or may determine the maximum switching delay time for multiple target TCI states as needed, that is, determine a total delay time for switching multiple target TCI states.

[0225] In step S2106, the network device 102 and the terminal 101 transmit a PDCCH message based on the switching delay time of the target TCI state.

[0226] In some embodiments, terms such as "PDCCH message", "physical downlink control channel message", "Physical Downlink Common Control message", and "physical downlink control channel PDCCH message" can be used interchangeably.

[0227] In some embodiments, the network device 102 sends a physical downlink control channel PDCCH message determined by the target TCI state to the terminal 101 based on the switching delay time of the target TCI state of each TRP.

[0228] In some embodiments, the terminal 101 receives a PDCCH message sent by the network device 102 that is determined by each target TCI state.

[0229] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2106. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, and steps S2101+S2102 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0230] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0231] FIG2B is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2B , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0232] Step S2201: The network device 102 sends first information to the terminal 101.

[0233] In step S2202, the network device 102 and the terminal 101 determine the time offset between the first SSBs sent by each two TRPs.

[0234] For a detailed introduction to steps S2201-S2202, please refer to the above steps S2101-S2102.

[0235] In step S2203, when at least one time offset is greater than or equal to the time length of the cyclic prefix CP, or when the first SSBs sent by at least two TRPs completely overlap, the network device 102 and the terminal 101 determine the target SSB of each TRP based on the first arrival time of each first information.

[0236] In some embodiments, the first arrival time is used to indicate the time when the first information arrives at the terminal 101 .

[0237] In some embodiments, the target SSBs of different TRPs are in different orders in the SSB sequences they transmit.

[0238] In some embodiments, when the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to terminal 101, and k is a natural number. For example, if the first information #0 associated with TRP#0 is the first to arrive at terminal 101, then the target SSB of TRP#0 is the first SSB in the SSB sequence sent by TRP#0. If the first information #1 associated with TRP#1 is the third to arrive at terminal 101, then the target SSB of TRP#1 is the third SSB in the SSB sequence sent by TRP#1.

[0239] In step S2204, the network device 102 sends the target SSB through each TRP.

[0240] In some embodiments, the network device 102 sends the target SSB to the terminal 101 through each TRP.

[0241] In some embodiments, terminal 101 receives the target SSB sent by network device 102 through each TRP.

[0242] In step S2205, the network device 102 and the terminal 101 determine the switching delay time according to the second arrival time of each target SSB.

[0243] In some embodiments, the network device 102 and the terminal 101 may first determine the second arrival time of each target SSB, and then determine the switching delay time of each target TCI state based on the second arrival time of each target SSB.

[0244] In some embodiments, the second arrival time is used to indicate the time when each target SSB arrives at terminal 101.

[0245] In some embodiments, when at least one time offset is greater than or equal to the time length of the cyclic prefix CP, it can be considered that there is partial overlap or complete overlap in the first SSB sent by the corresponding TRP, that is, the overlapping SSB message will not be received by the terminal 101. In this case, after determining the target SSB of each TRC based on the arrival time of each first information, the switching delay time of the corresponding target TCI state can be determined based on the second arrival time of each target SSB.

[0246] In some embodiments, if the first SSBs sent by at least two TRPs partially or completely overlap, the switching delay times of the target TCIs corresponding to the at least two TRPs are different.

[0247] For example, there are two TRPs. For the TRP whose first information arrives earliest, the switching delay time of the corresponding target TCI is: For the later arriving TRP, the switching delay time of its corresponding target TCI is: Among them, T 2nd-SSB It is the second reception time of the second SSB in the SSB sequence corresponding to the TRP that arrives after the first information.

[0248] In some embodiments, the network device 102 and the terminal 101 may also determine the maximum switching delay time of multiple target TCI states based on the latest second arrival time of multiple target SSBs after determining the second arrival time of each target SSB.

[0249] In some embodiments, the network device 102 and the terminal 101 may determine the switching delay time for each target TCI state, or may determine the switching delay time for multiple target TCI states as needed to determine a total switching delay time. For example, if there are two TRPs, the total switching delay time for the two TRPs is:

[0250] Among them, max(T first-SSB_TRP1, T 2nd-SSB_TRP2) is determined based on the latest reception time of the target SSB sent by each TRP received by terminal 101.

[0251] In step S2206, the network device 102 and the terminal 101 transmit a PDCCH message based on the switching delay time of the target TCI state.

[0252] For a detailed description of step S2206, please refer to the above step S2106.

[0253] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2201 to S2206. For example, step S2201 may be implemented as an independent embodiment, step S2202 may be implemented as an independent embodiment, step S2203 may be implemented as an independent embodiment, and steps S2201+S2202 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0254] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0255] FIG2C is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2C , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0256] Step S2301: The network device 102 sends first information to the terminal 101.

[0257] In step S2302, the network device 102 and the terminal 101 determine the time offset between the first SSBs sent by each two TRPs.

[0258] For a detailed introduction to steps S2301-S2302, please refer to the above steps S2201-S2202.

[0259] In step S2303, when at least one time offset is greater than or equal to the time length of the cyclic prefix CP, or when the first SSBs sent by at least two TRPs completely overlap, the network device 102 and the terminal 101 determine the target SSB of each TRP based on the second arrival time of the first SSB sent by each TRP.

[0260] In some embodiments, the target SSBs of different TRPs are in different orders in the SSB sequences they transmit.

[0261] In some embodiments, when the second arrival time of the first SSB sent by the j-th TRP is the f-th among all second arrival times, the target SSB of the j-th TRP is the f-th SSB in the SSB sequence sent by the j-th TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number. For example, there are three TRPs, namely TRP#0, TRP#1, and TRP#2. The first SSB#0 sent by TRP#0 is the first of the three first SSBs sent by the three TRPs to arrive at the terminal 101, so the target SSB of TRP#0 is SSB#0. The first SSB#1 sent by TRP#1 is the third of the three first SSBs to arrive at the terminal 101, so the target SSB of TRP#1 is the third SSB in the SSB sequence corresponding to TRP#1.

[0262] In step S2304, the network device 102 sends the target SSB through each TRP.

[0263] In some embodiments, the network device 102 sends the target SSB to the terminal 101 through each TRP.

[0264] In some embodiments, terminal 101 receives the target SSB sent by network device 102 through each TRP.

[0265] In step S2305, the network device 102 and the terminal 101 determine the switching delay time according to the second arrival time of each target SSB.

[0266] In step S2306, the network device 102 and the terminal 101 transmit a PDCCH message based on the switching delay time of the target TCI state.

[0267] For a detailed introduction to steps S2305-S2306, please refer to the above steps S2205-S2206.

[0268] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2301 to S2306. For example, step S2301 may be implemented as an independent embodiment, step S2302 may be implemented as an independent embodiment, step S2303 may be implemented as an independent embodiment, and steps S2301+S2302 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0269] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0270] FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the present disclosure embodiment relates to a communication method for terminal 101, the method comprising:

[0271] Step S3101, receiving the first information associated with each transmitting / receiving point TRP sent by the network device 102.

[0272] In some embodiments, a first message is used to activate a target transmission configuration indication TCI state.

[0273] In some embodiments, the terminal 101 receives first information associated with each transmission and reception point TRP sent by the network device 102.

[0274] Step S3102, determine the time offset between the first SSBs sent by each two TRPs.

[0275] In some embodiments, the time offset is used to represent the overlap between the first SSBs sent by each of the two TRPs. In other words, the time offset is the time interval between the completion time of the reception of the earlier SSB by the terminal 101 and the start time of the reception of the later SSB by the terminal 101.

[0276] In step S3103, when the time offset between the first SSBs respectively sent by at least two TRPs is less than the time length of the CP, the first SSB of each TRP is determined to be its target SSB.

[0277] Step S3104, receiving the target SSB sent by the network device 102 through each TRP.

[0278] In some embodiments, terminal 101 receives the target SSB sent by network device 102 through each TRP.

[0279] Step S3105: Determine the switching delay time according to the third arrival time of the first SSB of each TRP.

[0280] Step S3106: Receive a PDCCH message sent by the network device 102 based on the switching delay time of the target TCI state.

[0281] In some embodiments, the terminal 101 receives a physical downlink control channel PDCCH message determined by each target TCI state and sent by the network device 102 based on the switching delay time of each target TCI state.

[0282] For a detailed description of steps S3101 - S3106 , please refer to the above embodiment description.

[0283] The communication method according to the embodiments of the present disclosure may include at least one of steps S3101 to S3106. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, step S3103 may be implemented as an independent embodiment, and steps S3101+S3102 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0284] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0285] FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a communication method for terminal 101, the method comprising:

[0286] Step S3201, receiving the first information associated with each transmitting / receiving point TRP sent by the network device 102.

[0287] In some embodiments, a first message is used to activate a target transmission configuration indication TCI state.

[0288] In some embodiments, the terminal 101 receives first information associated with each transmission and reception point TRP sent by the network device 102.

[0289] Step S3202, determine the time offset between the first SSBs sent by each two TRPs.

[0290] Step S3203: When at least one time offset is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, the target SSB of each TRP is determined according to the first arrival time of each first information.

[0291] In some embodiments, the first arrival time is used to indicate the time when the first information arrives at the terminal 101 .

[0292] In some embodiments, the target SSBs of different TRPs are in different orders in the SSB sequences they transmit.

[0293] Step S3204, receiving the target SSB sent by the network device 102 through each TRP.

[0294] In some embodiments, terminal 101 receives the target SSB sent by network device 102 through each TRP.

[0295] Step S3205: Determine the switching delay time according to the second arrival time of each target SSB.

[0296] In some embodiments, the second arrival time is used to indicate the time when each target SSB arrives at terminal 101.

[0297] Step S3206: Receive a PDCCH message sent by the network device 102 based on the switching delay time of the target TCI state.

[0298] In some embodiments, the terminal 101 receives a physical downlink control channel PDCCH message determined by each target TCI state and sent by the network device 102 based on the switching delay time of each target TCI state.

[0299] For a detailed description of steps S3201 - S3206 , please refer to the above embodiment description.

[0300] The communication method according to the embodiments of the present disclosure may include at least one of steps S3201 to S3206. For example, step S3201 may be implemented as an independent embodiment, step S3202 may be implemented as an independent embodiment, step S3203 may be implemented as an independent embodiment, and steps S3201+S3202 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0301] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0302] FIG3C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3C , the present disclosure embodiment relates to a communication method for terminal 101, the method comprising:

[0303] Step S3301, receiving the first information associated with each transmitting and receiving point TRP sent by the network device 102.

[0304] In some embodiments, the terminal 101 receives first information associated with each transmission and reception point TRP sent by the network device 102.

[0305] Step S3302, determine the time offset between the first SSBs sent by each two TRPs.

[0306] Step S3303: When at least one time offset is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, the target SSB of each TRP is determined according to the second arrival time of the first SSB sent by each TRP.

[0307] In some embodiments, the target SSBs of different TRPs are in different orders in the SSB sequences they transmit.

[0308] Step S3304, receiving the target SSB sent by the network device 102 through each TRP.

[0309] In some embodiments, terminal 101 receives the target SSB sent by network device 102 through each TRP.

[0310] Step S3305: Determine the switching delay time according to the second arrival time of each target SSB.

[0311] Step S3306: Receive a PDCCH message sent by the network device 102 based on the switching delay time of the target TCI state.

[0312] For a detailed description of steps S3301 - S3306 , please refer to the above embodiment description.

[0313] The communication method according to the embodiments of the present disclosure may include at least one of steps S3301 to S3306. For example, step S3301 may be implemented as an independent embodiment, step S3302 may be implemented as an independent embodiment, step S3303 may be implemented as an independent embodiment, and steps S3301+S3302 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0314] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0315] FIG3D is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3D , the present disclosure embodiment relates to a communication method for terminal 101, the method comprising:

[0316] Step S3401, receiving the first information associated with each transmitting and receiving point TRP sent by the network device 102.

[0317] In some embodiments, the terminal 101 receives first information associated with each transmission and reception point TRP sent by the network device 102.

[0318] Step S3402, determine the time offset between the first SSBs sent by each two TRPs.

[0319] Step S3403: Determine the target SSB of each TRP based on the time offset between the first SSBs sent by at least two TRPs.

[0320] Step S3404, receiving the synchronization signal block SSB sent by the network device 102 through each TRP.

[0321] In some embodiments, the synchronization signal block SSB received by the terminal 101 is the target SSB.

[0322] In some embodiments, the terminal 101 receives the synchronization signal block SSB sent by the network device 102 through each TRP.

[0323] Step S3405: ​​Determine the switching delay time of each target TCI state based on each first information and at least one item in each SSB.

[0324] In some embodiments, the first SSBs sent by at least two TRPs in a plurality of TRPs completely or partially overlap.

[0325] Step S3406: Receive a PDCCH message sent by the network device 102 based on the switching delay time of each target TCI state.

[0326] For a detailed description of steps S3401-S3406, please refer to the above embodiment description.

[0327] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3401 to S3406. For example, step S3401 may be implemented as an independent embodiment, step S3402 may be implemented as an independent embodiment, step S3403 may be implemented as an independent embodiment, and steps S3401+S3402 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0328] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0329] FIG3E is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3E , the present disclosure embodiment relates to a communication method for terminal 101, the method comprising:

[0330] Step S3501, receiving the first information associated with each transmitting / receiving point TRP sent by the network device 102.

[0331] In some embodiments, the terminal 101 receives first information associated with each transmission and reception point TRP sent by the network device 102.

[0332] Step S3502, receiving the synchronization signal block SSB sent by the network device 102 through each TRP.

[0333] In some embodiments, the synchronization signal block SSB received by the terminal 101 is the target SSB.

[0334] In some embodiments, the terminal 101 receives the synchronization signal block SSB sent by the network device 102 through each TRP.

[0335] Step S3503: Determine the switching delay time of each target TCI state based on each first information and at least one item in each SSB.

[0336] In some embodiments, the first SSBs sent by at least two TRPs in a plurality of TRPs completely or partially overlap.

[0337] In some embodiments, receiving a synchronization signal block (SSB) sent by each TRP includes:

[0338] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0339] At least one time offset is greater than or equal to the duration of the cyclic prefix (CP), or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the first arrival time of each first information, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0340] Receive the target SSB sent by each TRP respectively.

[0341] In some embodiments, the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

[0342] In some embodiments, receiving a synchronization signal block (SSB) sent by each TRP includes:

[0343] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0344] At least one time offset is greater than or equal to the duration of the cyclic prefix (CP), or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined based on the second arrival time of the first SSB sent by each TRP, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0345] Receive the target SSB sent by each TRP respectively.

[0346] In some embodiments, the second arrival time of the first SSB sent by the jth TRP is the fth among all second arrival times, and the target SSB of the jth TRP is the fth SSB in the SSB sequence sent by the jth TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

[0347] In some embodiments, determining a switching delay time for each target TCI state based on each first information and at least one item in each SSB includes:

[0348] Determine the second arrival time of each target SSB;

[0349] According to the second arrival time of each target SSB, the switching delay time of each target TCI state is determined.

[0350] In some embodiments, after determining the second arrival time of each target SSB, the method further includes:

[0351] The maximum switching delay time of multiple target TCI states is determined according to the latest time among the second arrival times of multiple target SSBs.

[0352] In some embodiments, determining a switching delay time for each target TCI state based on at least one of each first information and each SSB includes:

[0353] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0354] Each time offset is less than the duration of the cyclic prefix CP, and determines the third arrival time of the first SSB sent by each TRP;

[0355] The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent by each TRP.

[0356] In some embodiments, after determining the third arrival time of the first SSB sent by each TRP, the method further includes:

[0357] The maximum switching delay time of the multiple target TCI states is determined according to the latest time among the third arrival times of the multiple first SSBs.

[0358] In some embodiments, after determining the switching delay time of each target TCI state, the method further includes:

[0359] Based on the switching delay time of each target TCI state, a physical downlink control channel PDCCH message determined by each target TCI state is received.

[0360] For a detailed description of steps S3501-S3503, please refer to the above embodiment description.

[0361] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3501 to S3503. For example, step S3501 may be implemented as an independent embodiment, step S3502 may be implemented as an independent embodiment, step S3503 may be implemented as an independent embodiment, and steps S3501+S3502 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0362] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0363] FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the present disclosure embodiment relates to a communication method for a network device 102, the method comprising:

[0364] Step S4101: Send the first information associated with each sending and receiving point TRP to the terminal 101.

[0365] In some embodiments, a first message is used to activate a target transmission configuration indication TCI state.

[0366] In some embodiments, the network device 102 sends the first information associated with each TRP to the terminal 101 through each TRP.

[0367] Step S4102, determine the time offset between the first SSBs sent by each two TRPs.

[0368] In some embodiments, the time offset is used to represent the overlap between the first SSBs sent by each of the two TRPs. In other words, the time offset is the time interval between the completion time of the reception of the earlier SSB by the terminal 101 and the start time of the reception of the later SSB by the terminal 101.

[0369] In step S4103, when the time offset between the first SSBs respectively sent by at least two TRPs is less than the time length of the CP, the first SSB of each TRP is determined to be its target SSB.

[0370] Step S4104, sending the target SSB to terminal 101 through each TRP.

[0371] In some embodiments, the network device 102 sends the target SSB to the terminal 101 through each TRP.

[0372] Step S4105: Determine the switching delay time according to the third arrival time of the first SSB of each TRP.

[0373] In some embodiments, the network device 102 may determine the switching delay time of the target TCI state of each TRP based on the third arrival time of the target SSB of each TRP.

[0374] In some embodiments, the third arrival time is the time when the target SSB of each TRP arrives at the terminal 101.

[0375] Step S4106: Send a PDCCH message to the terminal 101 based on the switching delay time of the target TCI state.

[0376] In some embodiments, the network device 102 sends a physical downlink control channel PDCCH message determined by the target TCI state to the terminal 101 based on the switching delay time of the target TCI state of each TRP.

[0377] For a detailed description of steps S4101 - S4106 , please refer to the above embodiment description.

[0378] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4101 to S4106. For example, step S4101 may be implemented as an independent embodiment, step S4102 may be implemented as an independent embodiment, and steps S4101+S4102 may be implemented as independent embodiments, but are not limited thereto.

[0379] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0380] FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a communication method for a network device 102, the method comprising:

[0381] Step S4201: Send the first information associated with each sending and receiving point TRP to the terminal 101.

[0382] In some embodiments, a first message is used to activate a target transmission configuration indication TCI state.

[0383] In some embodiments, the network device 102 sends the first information associated with each TRP to the terminal 101 through each TRP.

[0384] Step S4202, determine the time offset between the first SSBs sent by each two TRPs.

[0385] Step S4203: When at least one time offset is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, the target SSB of each TRP is determined according to the first arrival time of each first information.

[0386] In some embodiments, the first arrival time is used to indicate the time when the first information arrives at the terminal 101 .

[0387] In some embodiments, the target SSBs of different TRPs are in different orders in the SSB sequences they transmit.

[0388] Step S4204, send the target SSB to terminal 101 through each TRP.

[0389] In some embodiments, the network device 102 sends the target SSB to the terminal 101 through each TRP.

[0390] Step S4205: Determine the switching delay time according to the second arrival time of each target SSB.

[0391] In some embodiments, the network device 102 may first determine the second arrival time of each target SSB, and then determine the switching delay time of each target TCI state based on the second arrival time of each target SSB.

[0392] In some embodiments, the second arrival time is used to indicate the time when each target SSB arrives at terminal 101.

[0393] Step S4206: Send a PDCCH message to the terminal 101 based on the switching delay time of the target TCI state.

[0394] In some embodiments, the network device 102 sends a physical downlink control channel PDCCH message determined by the target TCI state to the terminal 101 based on the switching delay time of the target TCI state of each TRP.

[0395] For a detailed description of steps S4201-S4206, please refer to the above embodiment description.

[0396] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4201 to S4206. For example, step S4201 may be implemented as an independent embodiment, step S4202 may be implemented as an independent embodiment, and steps S4201+S4202 may be implemented as independent embodiments, but are not limited thereto.

[0397] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0398] FIG4C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4C , the present disclosure embodiment relates to a communication method for a network device 102, the method comprising:

[0399] Step S4301: Send the first information associated with each sending and receiving point TRP to the terminal 101.

[0400] In some embodiments, the network device 102 sends the first information associated with each TRP to the terminal 101 through each TRP.

[0401] Step S4302, determine the time offset between the first SSBs sent by each two TRPs.

[0402] Step S4303: When at least one time offset is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, the target SSB of each TRP is determined according to the second arrival time of the first SSB sent by each TRP.

[0403] In some embodiments, the target SSBs of different TRPs are in different orders in the SSB sequences they transmit.

[0404] Step S4304, send the target SSB to terminal 101 through each TRP.

[0405] In some embodiments, the network device 102 sends the target SSB to the terminal 101 through each TRP.

[0406] Step S4305: Determine the switching delay time according to the second arrival time of each target SSB.

[0407] Step S4306: Send a PDCCH message to the terminal 101 based on the switching delay time of the target TCI state.

[0408] In some embodiments, the network device 102 sends a physical downlink control channel PDCCH message determined by the target TCI state to the terminal 101 based on the switching delay time of the target TCI state of each TRP.

[0409] For a detailed description of steps S4301-S4306, please refer to the above embodiment description.

[0410] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4301 to S4306. For example, step S4301 may be implemented as an independent embodiment, step S4302 may be implemented as an independent embodiment, and steps S4301+S4302 may be implemented as independent embodiments, but are not limited thereto.

[0411] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0412] FIG4D is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4D , the present disclosure embodiment relates to a communication method for a network device 102, the method comprising:

[0413] Step S4401: Send the first information associated with each sending and receiving point TRP to the terminal 101.

[0414] In some embodiments, the first information is used to activate a target transmission configuration indication (TCI) state.

[0415] In some embodiments, the network device 102 sends first information associated with each transmitting / receiving point TRP to the terminal 101.

[0416] Step S4402, determine the time offset between the first SSBs sent by each two TRPs.

[0417] In some embodiments, the time offset is used to represent the time interval between the first SSBs sent by each two TRPs, the completion moment of one being received by the terminal 101, and the start moment of the other being received by the terminal 101.

[0418] Step S4403: Determine the target SSB of each TRP based on the time offset between the first SSBs sent by at least two TRPs.

[0419] Step S4404, sending synchronization signal block SSB to terminal 101 through each TRP.

[0420] In some embodiments, the synchronization signal block SSB sent by the network device 102 is the target SSB.

[0421] In some embodiments, the network device 102 sends a synchronization signal block SSB to the terminal 101 through each TRP.

[0422] Step S4405: Determine the switching delay time of each target TCI state based on each first information and at least one item in each SSB.

[0423] In some embodiments, the first SSBs sent by at least two TRPs in a plurality of TRPs completely or partially overlap.

[0424] Step S4406: Send a PDCCH message to the terminal 101 based on the switching delay time of the target TCI state.

[0425] For a detailed description of steps S4401-S4406, please refer to the above embodiment description.

[0426] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4401 to S4406. For example, step S4401 may be implemented as an independent embodiment, step S4402 may be implemented as an independent embodiment, and steps S4401+S4402 may be implemented as independent embodiments, but are not limited thereto.

[0427] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0428] FIG4E is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4E , the present disclosure embodiment relates to a communication method for a network device 102, the method comprising:

[0429] Step S4501: Send the first information associated with each sending and receiving point TRP to the terminal 101.

[0430] In some embodiments, the network device 102 sends first information associated with each transmitting / receiving point TRP to the terminal 101.

[0431] Step S4502, sending synchronization signal block SSB to terminal 101 through each TRP.

[0432] In some embodiments, the synchronization signal block SSB sent by the network device 102 is the target SSB.

[0433] In some embodiments, the network device 102 sends a synchronization signal block SSB to the terminal 101 through each TRP.

[0434] Step S4503: Determine the switching delay time of each target TCI state based on each first information and at least one item in each SSB.

[0435] In some embodiments, the first SSBs sent by at least two TRPs in a plurality of TRPs completely or partially overlap.

[0436] In some embodiments, a synchronization signal block (SSB) is sent with each TRP, including:

[0437] Determine the time offset between the first SSBs sent via each of the two TRPs;

[0438] At least one time offset is greater than or equal to the duration of the cyclic prefix (CP), or the first SSBs transmitted by at least two TRPs completely overlap, and a target SSB for each TRP is determined based on the first arrival time of each first information, wherein the target SSBs of different TRPs have different orders in the SSB sequence transmitted by them;

[0439] The target SSB is sent with each TRP.

[0440] In some embodiments, the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

[0441] In some embodiments, a synchronization signal block (SSB) is sent with each TRP, including:

[0442] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0443] At least one time offset is greater than or equal to the duration of the cyclic prefix (CP), or the first SSBs transmitted by at least two TRPs completely overlap, and the target SSB of each TRP is determined based on the second arrival time of the first SSB transmitted by each TRP, wherein the target SSBs of different TRPs have different orders in the SSB sequence transmitted by them;

[0444] The target SSB is sent with each TRP.

[0445] In some embodiments, the second arrival time of the first SSB sent by the jth TRP is the fth among all second arrival times, and the target SSB of the jth TRP is the fth SSB in the SSB sequence sent by the jth TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

[0446] In some embodiments, determining a switching delay time for each target TCI state based on each first information and at least one item in each SSB includes:

[0447] Determine the second arrival time of each target SSB;

[0448] According to the second arrival time of each target SSB, the switching delay time of each target TCI state is determined respectively.

[0449] In some embodiments, after determining the second arrival time of each target SSB, the method further includes:

[0450] The maximum switching delay time of multiple target TCI states is determined according to the latest time among the second arrival times of multiple target SSBs.

[0451] In some embodiments, determining a switching delay time for each target TCI state based on at least one of each first information and each SSB includes:

[0452] Determine the time offset between the first SSBs sent via each of the two TRPs;

[0453] Each time offset is less than the duration of the cyclic prefix CP and determines the third arrival time of the first SSB sent through each TRP;

[0454] The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent through each TRP.

[0455] In some embodiments, after determining the third arrival time of the first SSB sent via each TRP, the method further includes:

[0456] The maximum switching delay time of the multiple target TCI states is determined according to the latest time among the third arrival times of the multiple first SSBs.

[0457] In some embodiments, after determining the switching delay time of each target TCI state, the method further includes:

[0458] Based on the switching delay time of each target TCI state, a physical downlink control channel PDCCH message determined by the target TCI state is sent through each TRP.

[0459] For a detailed description of steps S4501-S4503, please refer to the above embodiment description.

[0460] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4501 to S4503. For example, step S4501 may be implemented as an independent embodiment, step S4502 may be implemented as an independent embodiment, and steps S4501+S4502 may be implemented as independent embodiments, but are not limited thereto.

[0461] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0462] The following is an exemplary introduction to the above method.

[0463] The present disclosure is used to solve the SSB overlap problem in the case of multiple downlink control information mDCI in the state switching based on MAC CE in multiple transmission and reception points mTRP. The optional implementation solutions are as follows:

[0464] For mDCI in mTRP, each TRP will send a separate MAC CE command to the UE to activate the TCI state. Therefore, the two TCI states are independent. However, since the two TRPs are independent, there is no guarantee that the two MAC CE commands will be received at the same time. In addition, the SSB configurations of the two TRPs may not be the same. These SSBs may overlap completely or partially. For the TDM-based mTRP scheme, the UE only applies one panel at a time, so if these SSBs overlap, the UE cannot receive these SSBs and it is impossible for the UE to process these SSBs. Therefore, the total delay requirement will be extended compared to the traditional requirements. A new method and related TCI state activation requirements are designed.

[0465] Conventionally, the TCI state switching requirement for MAC-CE based on a single TRP is as follows: If the target TCI state is known, then when a PDSCH carrying a MAC-CE activation command is received in time slot n, the UE shall be able to switch to the target TCI state in time slot n. The UE shall receive a PDCCH with the target TCI state of the serving cell where the TCI state switch occurs at the first slot after the slot length. The UE shall be able to receive a PDCCH with the old TCI state until the slot Among them, T HARQ is the timing between DL data transmission and acknowledgment as specified in TS 38.213[3]; T first-SSB is the time of the first SSB transmission after the UE decodes the MAC CE command; the SSB should be QCL type A or QCL type C of the target TCI state; T SSB-proc = 2ms; if the target TCI state is not in the active TCI state list of PDSCH, otherwise 0.

[0466] If the two candidate TCI states in the two MAC CEs are not in the active list, additional time / frequency (T / F) tracking based on the SSB of each TRP is required, because the two MAC CEs are sent from two TRPs respectively.

[0467] When both TCI states are known and in the active TCI state list, no additional time-frequency tracking is required. The delay requirement can then be defined for each TRP separately:

[0468] When two TCI states are known and are not in the active TCI state list, additional time-frequency tracking is required. The time-frequency tracking will be based on the SSBs of the two TRPs. However, the two SSBs from the two TRPs may partially or completely overlap.

[0469] If two SSBs partially overlap, the UE may not receive both SSBs simultaneously. The UE can only perform time / frequency tracking on one SSB. The UE needs to discard one SSB for one TRP. Then the UE behavior for the two TRPs is different. Assume that the SSB from TRP 1 will be used and the SSB from TRP 2 will be discarded. Then the UE behavior for the two TRPs is as follows:

[0470] 1. For TRP1, the legacy requirements can still be reused, i.e. the first SSB after the MAC CE command will be used for time-frequency tracking. The total latency of TCI activation will remain unchanged.

[0471] 2. For TRP2, the first SSB will be discarded due to the collision with the SSB from TRP1. The UE will use the second SSB for T / F tracking. Then, the total delay time will be extended.

[0472] Next, we will introduce how to design the rules that TRP needs to drop SSB and extend the delay:

[0473] Method 1: Based on the earliest MAC CE arrival time.

[0474] Since the MAC CE commands of the two TRPs are independent. They will not arrive at the same time. The UE will discard the first SSB from the TRP whose MAC CE command arrives later. As shown in Figure 5A, Figure 5A is a schematic diagram of the process for determining the target SSB provided by an embodiment of the present disclosure. Since the MAC CE command of TRP1 arrives earlier than TRP1, the UE will perform T / F tracking based on the first SSB of TRP1. For TRP2, the UE will discard the first SSB of TRP2 and use the second SSB for T / F tracking, then the delay of TRP will be extended. For this method, it only considers the arrival time of MAC CE. Even if the first SSB of TRP2 arrives earlier, the second SSB of TRP2 will be discarded, as shown in Figure 5B. Figure 5B is a schematic diagram of the process for determining the target SSB provided by an embodiment of the present disclosure.

[0475] For this method, if the two SSBs overlap completely or partially, the delay requirements for the two TRPs are different:

[0476] For TRP with early MAC CE command, the latency requirement is:

[0477] For a TRP with a later MAC CE command, the latency requirement is:

[0478] Another option is to define the total delay of both MAC CEs:

[0479] Method 2: Based on the earliest SSB arrival time.

[0480] Another option is that no matter which MAC CE command arrives early, the UE will process the SSB that arrives early after the two MAC CE commands, as shown in Figures 5C and 5D. Figure 5C is a schematic diagram of the process of determining the target SSB provided in an embodiment of the present disclosure, and Figure 5D is a schematic diagram of the process of determining the target SSB provided in an embodiment of the present disclosure.

[0481] For this method, if the two SSBs overlap completely or partially, the delay requirements for the two TRPs are different:

[0482] For TRP with early SSB, the latency requirement is:

[0483] For TRP with late SSB, the latency requirement is:

[0484] When the timing offset between two TRPs is less than the CP, a unified requirement can be defined for the two TRps:

[0485] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0486] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0487] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0488] FIG6A is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6A , the terminal 6100 may include at least one of a transceiver module 6101 and a processing module 6102 . The terminal 6100 includes:

[0489] The transceiver module 6101 is configured to receive first information associated with each transmission reception point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state;

[0490] The transceiver module 6101 is configured to receive a synchronization signal block SSB sent by each TRP;

[0491] The processing module 6102 is used to determine the switching delay time of each target TCI state based on each first information and at least one item in each SSB, wherein the first SSBs sent by at least two TRPs in multiple TRPs completely or partially overlap.

[0492] Optionally, receiving a synchronization signal block SSB sent by each TRP includes:

[0493] The processing module 6102 is configured to determine a time offset between the first SSBs sent by each of two TRPs;

[0494] The processing module 6102 is configured to determine, based on the first arrival time of each first information, a target SSB of each TRP when at least one of the time offsets is greater than or equal to the time length of a cyclic prefix (CP), or when the first SSBs sent by at least two TRPs completely overlap, wherein the target SSBs of different TRPs have different orders in the SSB sequences they send;

[0495] The transceiver module 6101 is used to receive the target SSB sent by each TRP respectively.

[0496] Optionally, the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

[0497] Optionally, receiving a synchronization signal block SSB sent by each TRP includes:

[0498] The processing module 6102 is configured to determine a time offset between the first SSBs sent by each of two TRPs;

[0499] The processing module 6102 is configured to determine a target SSB for each TRP based on a second arrival time of the first SSB sent by each TRP when at least one time offset is greater than or equal to the duration of a cyclic prefix (CP), or when the first SSBs sent by at least two TRPs completely overlap, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0500] The transceiver module 6101 is used to receive the target SSB sent by each TRP respectively.

[0501] Optionally, the second arrival time of the first SSB sent by the jth TRP is the fth among all second arrival times, and the target SSB of the jth TRP is the fth SSB in the SSB sequence sent by the jth TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

[0502] Optionally, the processing module 6102 includes:

[0503] Determine the second arrival time of each target SSB;

[0504] According to the second arrival time of each target SSB, the switching delay time of each target TCI state is determined.

[0505] Optionally, after determining the second arrival time of each target SSB, the method further includes:

[0506] The processing module 6102 is used to determine the maximum switching delay time of multiple target TCI states based on the latest time among the second arrival times of multiple target SSBs.

[0507] Optionally, the processing module 6101 includes:

[0508] Determine the time offset between the first SSBs sent by each of the two TRPs;

[0509] Each time offset is less than the duration of the cyclic prefix CP, and determines the third arrival time of the first SSB sent by each TRP;

[0510] The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent by each TRP.

[0511] Optionally, after determining the third arrival time of the first SSB sent by each TRP, the method further includes:

[0512] The processing module 6102 is used to determine the maximum switching delay time of multiple target TCI states based on the latest time among the third arrival times of multiple first SSBs.

[0513] Optionally, after determining the switching delay time of each target TCI state, the method further includes:

[0514] The transceiver module 6101 is configured to receive a physical downlink control channel PDCCH message determined by each target TCI state based on the switching delay time of each target TCI state.

[0515] FIG6B is a schematic diagram of the structure of the network device 102 proposed in an embodiment of the present disclosure. As shown in FIG6B , the network device 6200 may include at least one of a transceiver module 6201 and a processing module 6202 . The network device 6200 includes:

[0516] The transceiver module 6201 is configured to send first information associated with each transmission reception point TRP, wherein the first information is used to activate the target transmission configuration indication TCI state;

[0517] The transceiver module 6201 is configured to send a synchronization signal block SSB through each TRP;

[0518] The processing module 6202 is used to determine the switching delay time of each target TCI state based on each first information and at least one item in each SSB, wherein the first SSBs sent by at least two TRPs in multiple TRPs completely or partially overlap.

[0519] Optionally, a synchronization signal block SSB is sent with each TRP, including:

[0520] The processing module 6202 is configured to determine a time offset between the first SSBs sent via each of two TRPs;

[0521] The processing module 6202 is configured to determine a target SSB for each TRP based on a first arrival time of each first information when at least one time offset is greater than or equal to a time length of a cyclic prefix (CP), or when first SSBs transmitted by at least two TRPs completely overlap, wherein target SSBs of different TRPs have different orders in an SSB sequence transmitted by the TRPs;

[0522] The transceiver module 6201 is used to send the target SSB through each TRP.

[0523] Optionally, the first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

[0524] Optionally, a synchronization signal block SSB is sent with each TRP, including:

[0525] The processing module 6202 is configured to determine a time offset between the first SSBs sent by each of two TRPs;

[0526] The processing module 6202 is configured to determine a target SSB for each TRP based on a second arrival time of the first SSB sent by each TRP when at least one time offset is greater than or equal to the duration of a cyclic prefix (CP), or when the first SSBs sent by at least two TRPs completely overlap, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send;

[0527] The transceiver module 6201 is used to send the target SSB through each TRP.

[0528] Optionally, the second arrival time of the first SSB sent by the jth TRP is the fth among all second arrival times, and the target SSB of the jth TRP is the fth SSB in the SSB sequence sent by the jth TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

[0529] Optionally, the processing module 6202 includes:

[0530] Determine the second arrival time of each target SSB;

[0531] According to the second arrival time of each target SSB, the switching delay time of each target TCI state is determined respectively.

[0532] Optionally, after determining the third arrival time of each target SSB, the method further includes:

[0533] The processing module 6202 is used to determine the maximum switching delay time of multiple target TCI states based on the latest time among the second arrival times of multiple target SSBs.

[0534] Optionally, the processing module 6202 includes:

[0535] Determine the time offset between the first SSBs sent via each of the two TRPs;

[0536] Each time offset is less than the duration of the cyclic prefix CP and determines the third arrival time of the first SSB sent through each TRP;

[0537] The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent through each TRP.

[0538] Optionally, after determining the third arrival time of the first SSB sent through each TRP, the method further includes:

[0539] The processing module 6202 is used to determine the maximum switching delay time of multiple target TCI states based on the latest time of the second arrival time of multiple first SSBs.

[0540] Optionally, after determining the switching delay time of each target TCI state, the method further includes:

[0541] The transceiver module 6201 is used to send a physical downlink control channel PDCCH message determined by the target TCI state through each TRP based on the switching delay time of each target TCI state.

[0542] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0543] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0544] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a terminal, a network device, a chip, a chip system, or a processor that supports a terminal implementing any of the above methods, or a chip, a chip system, or a processor that supports a network device implementing any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0545] As shown in FIG7A , the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The communication device 7100 is used to perform any of the above methods.

[0546] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0547] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2104, step S2106, step S2201, step S2204, step S2206, step S2301, step S2304, step S2306, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S2102, step S2103, step S2105, step S2202, step S2203, step S2205, step S2302, step S2303, step S2305).

[0548] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0549] In some embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected to the memory 7102. The interface circuit 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0550] The communication device 7100 described in the above embodiments may be a terminal or a network device, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0551] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0552] The chip 7200 includes one or more processors 7201 , and the chip 7200 is configured to execute any of the above methods.

[0553] In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuit 7202 is connected to the memory 7203. The interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and can be used to send signals to the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.

[0554] In some embodiments, the interface circuit 7202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2104, step S2106, step S2201, step S2204, step S2206, step S2301, step S2304, step S2306, but not limited to these), and the processor 7201 executes at least one of the other steps (for example, step S2102, step S2103, step S2105, step S2202, step S2203, step S2205, step S2302, step S2303, step S2305).

[0555] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0556] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memories 7203 may be located outside the chip 7200.

[0557] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0558] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0559] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that: Executed by a terminal, the method includes: Receiving first information associated with each transmission reception point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state; Receiving a synchronization signal block SSB sent by each of the TRPs; Based on each of the first information and at least one item in each of the SSBs, the switching delay time of each of the target TCI states is determined, wherein the first SSBs sent by at least two of the multiple TRPs completely or partially overlap.

2. The method according to claim 1, characterized in that The receiving a synchronization signal block SSB sent by each of the TRPs comprises: Determine the time offset between the first SSBs sent by each two TRPs; At least one of the time offsets is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the first arrival time of each of the first information, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send; Receive the target SSB sent by each of the TRPs respectively.

3. The method according to claim 2, characterized in that The first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

4. The method according to claim 1, characterized in that The receiving a synchronization signal block SSB sent by each of the TRPs comprises: Determine the time offset between the first SSBs sent by each two TRPs; At least one of the time offsets is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the second arrival time of the first SSB sent by each TRP, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send; Receive the target SSB sent by each of the TRPs respectively.

5. The method according to claim 4, characterized in that The second arrival time of the first SSB sent by the jth TRP is the fth among all second arrival times, and the target SSB of the jth TRP is the fth SSB in the SSB sequence sent by the jth TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

6. The method according to any one of claims 2 to 5, characterized in that: The determining, according to each of the first information and at least one of each of the SSBs, a switching delay time of each of the target TCI states includes: determining a second arrival time of each of the target SSBs; According to the second arrival time of each of the target SSBs, the switching delay time of each of the target TCI states is determined.

7. The method according to claim 6, characterized in that After determining the second arrival time of each of the target SSBs, the method further includes: According to the latest time among the second arrival times of the multiple target SSBs, the maximum switching delay time of the multiple target TCI states is determined.

8. The method according to claim 1, characterized in that Determining, according to at least one of each of the first information and each of the SSBs, a switching delay time of each of the target TCI states, including: Determine the time offset between the first SSBs sent by each two TRPs; Each of the time offsets is less than the time length of the cyclic prefix CP, and the third arrival time of the first SSB sent by each of the TRPs is determined; The switching delay time of each target TCI state is determined according to the third arrival time of the first SSB sent by each TRP.

9. The method according to claim 8, characterized in that After determining the third arrival time of the first SSB sent by each of the TRPs, the method further includes: Determine the maximum switching delay time of the target TCI states according to the latest time among the third arrival times of the first SSBs. between.

10. The method according to any one of claims 1 to 9, characterized in that: After determining the switching delay time of each target TCI state, the method further includes: Based on the switching delay time of each of the target TCI states, a physical downlink control channel PDCCH message determined by each of the target TCI states is received.

11. A communication method, characterized in that: Executed by a network device, the method includes: Sending first information associated with each transmission reception point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state; Sending a synchronization signal block SSB via each of said TRPs; Based on each of the first information and at least one item in each of the SSBs, the switching delay time of each of the target TCI states is determined, wherein the first SSBs sent by at least two of the multiple TRPs completely or partially overlap.

12. The method according to claim 11, characterized in that The sending of a synchronization signal block SSB through each of the TRPs comprises: Determine the time offset between the first SSBs sent via each of the two TRPs; At least one of the time offsets is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the first arrival time of each of the first information, wherein the target SSBs of different TRPs have different orders in the SSB sequence sent therethrough; The target SSB is sent through each of the TRPs.

13. The method according to claim 12, characterized in that The first arrival time of the first information associated with the i-th TRP is the k-th among all first arrival times, and the target SSB of the i-th TRP is the k-th SSB in the SSB sequence sent by the i-th TRP, where i is a natural number less than n, n is the number of TRPs connected to the terminal, and k is a natural number.

14. The method according to claim 11, characterized in that The sending of a synchronization signal block SSB through each of the TRPs comprises: Determine the time offset between the first SSBs sent by each two TRPs; At least one of the time offsets is greater than or equal to the time length of the cyclic prefix CP, or the first SSBs sent by at least two TRPs completely overlap, and the target SSB of each TRP is determined according to the second arrival time of the first SSB sent by each TRP, wherein the target SSBs of different TRPs have different orders in the SSB sequence they send; The target SSB is sent through each of the TRPs.

15. The method according to claim 14, characterized in that The second arrival time of the first SSB sent by the jth TRP is the fth among all second arrival times, and the target SSB of the jth TRP is the fth SSB in the SSB sequence sent by the jth TRP, where j is a natural number less than n, n is the number of TRPs connected to the terminal, and f is a natural number.

16. The method according to any one of claims 12 to 15, characterized in that: The determining, according to each of the first information and at least one of each of the SSBs, a switching delay time of each of the target TCI states includes: determining a second arrival time of each of the target SSBs; According to the second arrival time of each of the target SSBs, the switching delay time of each of the target TCI states is determined respectively.

17. The method according to claim 16, characterized in that After determining the second arrival time of each of the target SSBs, the method further includes: According to the latest time among the second arrival times of the multiple target SSBs, the maximum switching delay time of the multiple target TCI states is determined.

18. The method according to claim 11, characterized in that Determining, according to at least one of each of the first information and each of the SSBs, a switching delay time of each of the target TCI states, including: Determine the time offset between the first SSBs sent via each of the two TRPs; Each of the time offsets is less than the time length of the cyclic prefix CP, and the third time of the first SSB sent by each of the TRPs is determined. Arrival time; The switching delay time of each target TCI state is determined based on the third arrival time of the first SSB sent through each TRP.

19. The method according to claim 18, characterized in that After determining the third arrival time of the first SSB sent by each of the TRPs, the method further comprises: The maximum switching delay time of the multiple target TCI states is determined according to the latest time among the third arrival times of the multiple first SSBs.

20. The method according to any one of claims 11 to 19, characterized in that: After determining the switching delay time of each target TCI state, the method further includes: Based on the switching delay time of each target TCI state, a physical downlink control channel PDCCH message determined by the target TCI state is sent through each TRP.

21. A terminal, characterized in that: The device comprises: A transceiver module, configured to receive first information associated with each transmission reception point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state; The transceiver module is used to receive the synchronization signal block SSB sent by each TRP; A processing module is used to determine the switching delay time of each target TCI state based on each of the first information and at least one item in each of the SSBs, wherein the first SSBs sent by at least two TRPs among the multiple TRPs completely or partially overlap.

22. A network device, characterized in that: The device comprises: A transceiver module, configured to send first information associated with each transmission receiving point TRP, wherein the first information is used to activate a target transmission configuration indication TCI state; The transceiver module is used to send a synchronization signal block SSB through each TRP; A processing module is used to determine the switching delay time of each target TCI state based on each of the first information and at least one item in each of the SSBs, wherein the first SSBs sent by at least two TRPs among the multiple TRPs completely or partially overlap.

23. A terminal, characterized in that: include: one or more processors; The processor is used to execute the communication method according to any one of claims 1 to 10.

24. A network device, characterized in that: include: one or more processors; The processor is used to execute the communication method described in any one of claims 11-20.

25. A communication system, characterized in that: The invention comprises a terminal and a network device, wherein the terminal is configured to implement the communication method according to any one of claims 1 to 10, and the network device is configured to implement the communication method according to any one of claims 11 to 20.

26. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1-10 or 11-20.

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