Communication method, apparatus, device and system, and storage medium

Abstract

The present disclosure provides a communication method, apparatus and device, and a storage medium. The method comprises: in a multi downlink control information (MDCI) transmission scenario of multi transmission reception points (MTRPs), when a TRP transmits first signaling to a terminal, the TRP determines a first moment, wherein the first signaling is used by the TRP to instruct the terminal to activate a transmission configuration indicator (TCI) state, and the first moment is used for indicating an activation completion moment of a TCI state to be activated by at least one TRP among the MTRPs; and the TRP transmits a first channel to the terminal on the basis of the first moment. The present disclosure provides a method for "how to determine an activation completion moment of a TCI state to be activated by at least one TRP among TRPs", thereby ensuring successful activation and successful use of the TCI state in the MDCI transmission scenario of the MTRPs, and ensuring the communication stability.

Description

Communication method and device, communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to communication methods and devices, communication equipment, communication systems, and storage media. Background Art

[0002] In a communication system, a multi transmission reception point (TRP) usually sends signaling to the terminal for activating the transmission configuration indicator state (TCI state), where different TCI states can be used to determine different beams. Therefore, after receiving the signaling for activating the TCI state, the terminal can activate the corresponding TCI state so that channel transmission with the TRP can be realized based on the beam corresponding to the activated TCI state.

[0003] Summary of the Invention

[0004] The present disclosure provides a communication method and apparatus, a communication device, a communication system, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, including at least one of the following:

[0006] In a multi-downlink control information MDCI transmission scenario of a multi-transmission reception point MTRP, when a TRP sends a first signaling to a terminal, the TRP determines a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate a transmission configuration indication TCI state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP;

[0007] The TRP sends a first channel to the terminal based on the first moment.

[0008] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, including at least one of the following:

[0009] In the MDCI transmission scenario of MTRP, when the terminal receives first signaling sent by at least one TRP, the terminal determines a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate the transmission configuration indication TCI state state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP;

[0010] The terminal receives the first channel sent by the TRP based on the first moment.

[0011] According to a third aspect of an embodiment of the present disclosure, a communication method is provided for use in a communication system, the communication system including a TRP and a terminal, the method including at least one of the following:

[0012] In the MDCI transmission scenario of MTRP, when the TRP sends a first signaling to the terminal, the TRP determines a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate the TCI state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP;

[0013] The TRP sends a first channel to the terminal based on the first time;

[0014] In the MDCI transmission scenario of the MTRP, when the terminal receives first signaling sent by at least one TRP, the terminal determines a first time;

[0015] The terminal receives the first channel sent by the TRP based on the first moment.

[0016] According to a fourth aspect of the embodiments of the present disclosure, a TRP is provided, comprising at least one of the following:

[0017] A processing module, configured to, in an MDCI transmission scenario of an MTRP, send a first signaling to a terminal, the TRP determining a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate a transmission configuration indication TCI state, and the first time is used to indicate: a time at which activation of a TCI state to be activated by at least one TRP in the MTRP is completed;

[0018] A sending module is used for the TRP to send the first channel to the terminal based on the first moment.

[0019] According to a fifth aspect of an embodiment of the present disclosure, a terminal is provided, comprising at least one of the following:

[0020] A processing module, configured to determine a first time when receiving a first signaling sent by at least one TRP in an MDCI transmission scenario of an MTRP; wherein the first signaling is used by the TRP to instruct the terminal to activate a transmission configuration indication TCI state, and the first time is used to indicate: a time when activation of the TCI state to be activated by at least one TRP in the MTRP is completed;

[0021] A receiving module is used to receive the first channel sent by the TRP based on the first moment.

[0022] According to a sixth 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 communication method described in the first aspect or the second aspect.

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

[0026] According to an eighth aspect of an 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 communication method described in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] FIG1 is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0029] FIG2A1 is an interactive diagram of a communication method provided by an embodiment of the present disclosure;

[0030] FIG2A2 is a schematic structural diagram of MAC CE signaling according to an embodiment of the present disclosure;

[0031] FIG2A3 is a schematic structural diagram of first time slots and first moments corresponding to different TRPs according to an embodiment of the present disclosure;

[0032] FIG2B is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure;

[0033] 3A-3C are flowcharts of a communication method provided in yet another embodiment of the present disclosure;

[0034] 4A-4C are flowcharts of a communication method provided in yet another embodiment of the present disclosure;

[0035] FIG5A is a flow chart of a communication method provided in yet another embodiment of the present disclosure;

[0036] FIG5B is a structural diagram corresponding to scenario 1 according to an embodiment of the present disclosure;

[0037] FIG5C is a schematic structural diagram corresponding to scenario 2 according to an embodiment of the present disclosure;

[0038] FIG6A is a schematic diagram of the structure of a TRP provided by an embodiment of the present disclosure;

[0039] FIG6B is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

[0040] FIG7A is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0041] FIG7B is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] The embodiments of the present disclosure provide a communication method and apparatus, a communication device, a communication system, and a storage medium.

[0043] In a first aspect, an embodiment of the present disclosure provides a communication method, which is performed by a TRP. The method includes at least one of the following:

[0044] In a multi-downlink control information MDCI transmission scenario of a multi-transmission reception point MTRP, when a TRP sends a first signaling to a terminal, the TRP determines a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate a transmission configuration indication TCI state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP;

[0045] The TRP sends a first channel to the terminal based on the first moment.

[0046] In the above embodiment, for the MDCI transmission scenario of MTRP, a method of "how to determine the activation completion time of the TCI state to be activated by at least one TRP in TRP" is provided, so that the activation completion time of the TCI state to be activated by at least one TRP in TRP can be successfully determined, thereby facilitating the TRP and the terminal to subsequently successfully implement channel transmission based on the activated TCI state based on the determined activation time, ensuring the successful activation and successful use of the TCI state in the MDCI transmission scenario of MTRP, and ensuring communication stability.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, the first signaling is used by the TRP to instruct the terminal to activate a TCI state in a TCI state set corresponding to the TRP; wherein different TRPs correspond to TCI state sets, and the TCI state set includes at least one TCI state;

[0048] The method further comprises:

[0049] Configure the TCI state set corresponding to the TRP for the terminal.

[0050] In the above embodiment, the method disclosed herein can be applied to the MDCI transmission scenario of MTRP. When the TRP instructs the terminal to activate a TCI state in the TCI state set corresponding to the TRP, the corresponding activation completion time is determined. In addition, in the method disclosed herein, a corresponding TCI state set is maintained for each TRP, so that the TRP can activate a TCI state in the corresponding TCI state set. Thus, the TRP can switch to activate different TCI states in the corresponding TCI state set, which is highly flexible.

[0051] With reference to some embodiments of the first aspect, in some embodiments, determining the first moment includes:

[0052] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0053] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0054] The second moment corresponding to the TRP is determined as the first moment corresponding to the TRP, wherein the first moments corresponding to different TRPs are the same or different.

[0055] In combination with some embodiments of the first aspect, in some embodiments, there is no communication interaction between different TRPs in the MTRP, or there is communication interaction between different TRPs in the MTRP.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, sending the first channel to the terminal based on the first moment includes at least one of the following:

[0057] After the TRP sends the first signaling to the terminal, and before the first time corresponding to the TRP, a first channel is sent to the terminal based on a first TCI state corresponding to the TRP; wherein the first TCI state is: a TCI state used when sending and / or receiving the first channel between the TRP and the terminal before the TRP sends the first signaling to the terminal;

[0058] After the first moment corresponding to the TRP, a first channel is sent to the terminal based on the first TCI state corresponding to the TRP, or a first channel is sent to the terminal based on the second TCI state corresponding to the TRP; wherein the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP.

[0059] The above embodiment provides a specific method for determining a first moment and, based on the first moment, determining which TCI state to use for transmitting a first channel to a terminal. This method successfully activates and utilizes TCI states in MDCI transmission scenarios within an MTRP, ensuring communication stability. Furthermore, the method of the above embodiment can be applied to scenarios where there is no communication interaction between different TRPs within an MTRP, or scenarios where there is communication interaction between different TRPs within an MTRP, thus having a wide range of applicability.

[0060] With reference to some embodiments of the first aspect, in some embodiments, determining the first moment includes:

[0061] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0062] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0063] There is communication interaction between different TRPs in the MTRP, and obtaining second moments corresponding to other TRPs in the MTRP except the TRP;

[0064] The second moment with the largest value among all the second moments corresponding to the MTRP is determined as the first moment, wherein the first moments corresponding to different TRPs are the same.

[0065] In conjunction with some embodiments of the first aspect, in some embodiments, sending the first channel to the terminal based on the first moment includes at least one of the following:

[0066] After the TRP sends the first signaling to the terminal, before the first moment, the first channel is sent to the terminal based on a first TCI state corresponding to the TRP, or the first channel is sent to the terminal based on a second TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP;

[0067] After the first moment, a first channel is sent to the terminal based on a second TCI state corresponding to the TRP.

[0068] In the above embodiment, another specific method is provided for determining the first moment and determining which TCI state to use to send the first channel to the terminal based on the first moment, thereby realizing the successful activation and successful use of the TCI state in the MDCI transmission scenario of MTRP and ensuring communication stability.

[0069] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a terminal, and the method includes at least one of the following:

[0070] In the MDCI transmission scenario of MTRP, when the terminal receives first signaling sent by at least one TRP, the terminal determines a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate the transmission configuration indication TCI state state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP;

[0071] The terminal receives the first channel sent by the TRP based on the first moment.

[0072] In the above embodiment, for the MDCI transmission scenario of MTRP, a method of "how to determine the activation completion time of the TCI state to be activated by at least one TRP in TRP" is provided, so that the activation completion time of the TCI state to be activated by at least one TRP in TRP can be successfully determined, thereby facilitating the TRP and the terminal to subsequently successfully implement channel transmission based on the activated TCI state based on the determined activation time, ensuring the successful activation and successful use of the TCI state in the MDCI transmission scenario of MTRP, and ensuring communication stability.

[0073] In conjunction with some embodiments of the second aspect, in some embodiments, the first signaling is used by the TRP to instruct the terminal to activate a TCI state in a TCI state set corresponding to the TRP; wherein different TRPs correspond to TCI state sets, and the TCI state set includes at least one TCI state;

[0074] The method further comprises:

[0075] Receive a TCI state set corresponding to at least one TRP configured by the TRP.

[0076] With reference to some embodiments of the second aspect, in some embodiments, determining the first moment includes:

[0077] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0078] Determine, based on a first time slot corresponding to at least one TRP, a second time corresponding to at least one TRP, where the second time is used to indicate a time at which activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0079] The second moment corresponding to the TRP is determined as the first moment corresponding to the TRP, wherein the first moments corresponding to different TRPs are the same or different.

[0080] In combination with some embodiments of the second aspect, in some embodiments, there is no communication interaction between different TRPs in the MTRP, or there is communication interaction between different TRPs in the MTRP.

[0081] In conjunction with some embodiments of the second aspect, in some embodiments, the first channel for receiving the TRP sent based on the first moment includes at least one of the following:

[0082] After the terminal receives the first signaling sent by the TRP and before the first time corresponding to the TRP, the terminal receives the first channel sent by the TRP based on the first TCI state corresponding to the TRP; wherein the first TCI state is: before the TRP sends the first signaling to the terminal, the TCI state used when the first channel is sent and / or received between the TRP and the terminal;

[0083] After the first moment corresponding to the TRP, the first channel sent by the TRP is received based on the first TCI state corresponding to the TRP, or the first channel sent by the TRP is received based on the second TCI state corresponding to the TRP; wherein the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP.

[0084] With reference to some embodiments of the second aspect, in some embodiments, determining the first moment includes:

[0085] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0086] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0087] The second moment with the largest value among all the second moments corresponding to the MTRP is determined as the first moment, wherein the first moments corresponding to different TRPs are the same.

[0088] In conjunction with some embodiments of the second aspect, in some embodiments, the first channel for receiving the TRP sent based on the first moment includes at least one of the following:

[0089] After the terminal receives the first signaling sent by the TRP, and before the first moment, the terminal receives the first channel sent by the TRP based on the first TCI state corresponding to the TRP, or receives the first channel sent by the TRP based on the second TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP;

[0090] After the first moment, the first channel sent by the TRP is received based on the second TCI state corresponding to the TRP.

[0091] According to a third aspect of an embodiment of the present disclosure, a communication method is provided for use in a communication system, the communication system including a TRP and a terminal, the method including at least one of the following:

[0092] In the MDCI transmission scenario of MTRP, when the TRP sends a first signaling to the terminal, the TRP determines a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate the TCI state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP;

[0093] The TRP sends a first channel to the terminal based on the first time;

[0094] In the MDCI transmission scenario of the MTRP, when the terminal receives first signaling sent by at least one TRP, the terminal determines a first time;

[0095] The terminal receives the first channel sent by the TRP based on the first moment.

[0096] In a fourth aspect, an embodiment of the present disclosure provides a TRP, comprising at least one of the following:

[0097] A processing module, configured to, in an MDCI transmission scenario of an MTRP, send a first signaling to a terminal, the TRP determining a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate a transmission configuration indication TCI state, and the first time is used to indicate: a time at which activation of a TCI state to be activated by at least one TRP in the MTRP is completed;

[0098] A sending module is used for the TRP to send the first channel to the terminal based on the first moment.

[0099] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first signaling is used by the TRP to instruct the terminal to activate a TCI state in a TCI state set corresponding to the TRP; wherein different TRPs correspond to TCI state sets, and the TCI state set includes at least one TCI state;

[0100] The TRP is also used to:

[0101] Configure the TCI state set corresponding to the TRP for the terminal.

[0102] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0103] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0104] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0105] The second moment corresponding to the TRP is determined as the first moment corresponding to the TRP, wherein the first moments corresponding to different TRPs are the same or different.

[0106] In combination with some embodiments of the fourth aspect, in some embodiments, there is no communication interaction between different TRPs in the MTRP, or there is communication interaction between different TRPs in the MTRP.

[0107] In conjunction with some embodiments of the fourth aspect, in some embodiments, the sending module is further used for at least one of the following:

[0108] After the TRP sends the first signaling to the terminal, and before the first time corresponding to the TRP, a first channel is sent to the terminal based on a first TCI state corresponding to the TRP; wherein the first TCI state is: a TCI state used when sending and / or receiving the first channel between the TRP and the terminal before the TRP sends the first signaling to the terminal;

[0109] After the first moment corresponding to the TRP, a first channel is sent to the terminal based on the first TCI state corresponding to the TRP, or a first channel is sent to the terminal based on the second TCI state corresponding to the TRP; wherein the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP.

[0110] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0111] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0112] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0113] There is communication interaction between different TRPs in the MTRP, and obtaining second moments corresponding to other TRPs in the MTRP except the TRP;

[0114] The second moment with the largest value among all the second moments corresponding to the MTRP is determined as the first moment, wherein the first moments corresponding to different TRPs are the same.

[0115] In conjunction with some embodiments of the fourth aspect, in some embodiments, the sending module is further used for at least one of the following:

[0116] After the TRP sends the first signaling to the terminal, before the first moment, the first channel is sent to the terminal based on a first TCI state corresponding to the TRP, or the first channel is sent to the terminal based on a second TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP;

[0117] After the first moment, a first channel is sent to the terminal based on a second TCI state corresponding to the TRP.

[0118] In a fifth aspect, an embodiment of the present disclosure provides a terminal, comprising at least one of the following:

[0119] A processing module, configured to determine a first time when receiving a first signaling sent by at least one TRP in an MDCI transmission scenario of an MTRP; wherein the first signaling is used by the TRP to instruct the terminal to activate a transmission configuration indication TCI state, and the first time is used to indicate: a time when activation of the TCI state to be activated by at least one TRP in the MTRP is completed;

[0120] A receiving module is used to receive the first channel sent by the TRP based on the first moment.

[0121] In conjunction with some embodiments of the fifth aspect, in some embodiments, the first signaling is used by the TRP to instruct the terminal to activate a TCI state in a TCI state set corresponding to the TRP; wherein different TRPs correspond to TCI state sets, and the TCI state set includes at least one TCI state;

[0122] The terminal is also used for:

[0123] Receive a TCI state set corresponding to at least one TRP configured by the TRP.

[0124] In conjunction with some embodiments of the fifth aspect, in some embodiments, the processing module is further configured to:

[0125] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0126] Determine, based on a first time slot corresponding to at least one TRP, a second time corresponding to at least one TRP, where the second time is used to indicate a time at which activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0127] The second moment corresponding to the TRP is determined as the first moment corresponding to the TRP, wherein the first moments corresponding to different TRPs are the same or different.

[0128] In combination with some embodiments of the fifth aspect, in some embodiments, there is no communication interaction between different TRPs in the MTRP, or there is communication interaction between different TRPs in the MTRP.

[0129] In conjunction with some embodiments of the fifth aspect, in some embodiments, the receiving module is further used for at least one of the following:

[0130] After the terminal receives the first signaling sent by the TRP and before the first time corresponding to the TRP, the terminal receives the first channel sent by the TRP based on the first TCI state corresponding to the TRP; wherein the first TCI state is: before the TRP sends the first signaling to the terminal, the TCI state used when the first channel is sent and / or received between the TRP and the terminal;

[0131] After the first moment corresponding to the TRP, the first channel sent by the TRP is received based on the first TCI state corresponding to the TRP, or the first channel sent by the TRP is received based on the second TCI state corresponding to the TRP; wherein the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP.

[0132] In conjunction with some embodiments of the fifth aspect, in some embodiments, the processing module is further configured to:

[0133] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0134] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0135] The second moment with the largest value among all the second moments corresponding to the MTRP is determined as the first moment, wherein the first moments corresponding to different TRPs are the same.

[0136] In conjunction with some embodiments of the fifth aspect, in some embodiments, the receiving module is further used for at least one of the following:

[0137] After the terminal receives the first signaling sent by the TRP, and before the first moment, the terminal receives the first channel sent by the TRP based on the first TCI state corresponding to the TRP, or receives the first channel sent by the TRP based on the second TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP;

[0138] After the first moment, the first channel sent by the TRP is received based on the second TCI state corresponding to the TRP.

[0139] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; one or more memories for storing instructions; wherein the processor is used to call the instructions so that the communication device executes the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0140] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a TRP and a terminal; wherein the TRP is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the terminal is configured to execute the method described in the second aspect and the optional implementation of the second aspect.

[0141] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0142] In the 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 communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0143] 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 communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0144] It is understandable that the above-mentioned TRP, terminal, communication device, communication system, storage medium, program product, and computer program are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0145] The present disclosure provides invention titles. In some embodiments, the terms "communication method" and "information communication method," "information sending method," and "information receiving method" are interchangeable; the terms "communication device" and "information processing device," "information sending device," and "information receiving device" are interchangeable; and the terms "information processing system," "communication system," "information sending system," and "information receiving system" are interchangeable.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0151] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0152] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0153] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0159] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0160] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0161] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0162] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0163] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0164] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0165] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0166] 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.

[0167] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0168] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0169] Figure 1 is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1 , communication system 100 may include a terminal and at least one network device (two network devices are used as an example in Figure 1 ). The network device may include at least one of an access network device and a core network device.

[0170] In some embodiments, the terminal 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.

[0171] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access 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 wireless fidelity (WiFi) system, but is not limited thereto.

[0172] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0173] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0174] In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or a group of devices, each including all or part of one or more network elements. The network element may be virtual or physical. The core network, for example, includes at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC). Alternatively, the core network device may also be a location management function network element. Exemplarily, the location management function network element includes a location server (location server), which may be implemented as any one of the following: Location Management Function (LMF), Enhanced Serving Mobile Location Centre (E-SMLC), Secure User Plane Location (SUPL), and Secure User Plane Location Platform (SUPLLP).

[0175] 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.

[0176] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0177] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, 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 (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0178] Optionally, in some embodiments, after the TRP sends a signaling to the terminal for activating the TCI state, since it takes a certain amount of time for the terminal to activate the TCI state, the terminal and the TRP usually need to determine the activation delay when activating the TCI state required to activate the TRP. The activation delay can be understood as: the activation time required for the terminal to activate the TCI state to be activated by the TRP. Afterwards, the terminal and the TRP can determine the activation completion time of the terminal for the TCI state to be activated by the TRP based on the activation delay, and after the activation completion time, start transmitting channels based on the activated TCI state corresponding to the TRP, such as transmitting the physical downlink shared channel (PDSCH).

[0179] Optionally, in order to improve the communication efficiency of the communication system, multi-transmission reception point (MTRP) transmission is introduced, wherein multi-downlink control information (MDCI) transmission is usually performed in MTRP. In the MDCI transmission scenario of MTRP, multiple TRPs will send DCI to the terminal respectively. The DCI sent by each TRP is used to schedule the PDSCH of the TRP, that is, the DCI sent by each TRP can be used to indicate the transmission resources of "the PDSCH subsequently sent by the TRP", so that the terminal can receive the PDSCH subsequently sent by the TRP based on the DCI sent by each TRP. Optionally, in the MDCI transmission scenario of MTRP, TRP also needs to send signaling for activating the TCI state to the terminal. Optionally, in the MDCI transmission scenario of MTRP, each TRP can send signaling for activating the TCI state to the terminal respectively, and after the terminal receives the signaling for activating the TCI state sent by different TRPs, it can activate the TCI state to be activated by the TRP, so that it can subsequently receive the PDSCH sent by the TRP based on the TCI state corresponding to each TRP.

[0180] It should be noted that the current method for determining the activation completion time of the TCI state to be activated by TRP is not applicable to the MDCI transmission scenario of MTRP. Therefore, how to determine the activation completion time of the TCI state to be activated by each TRP in MTRP is a technical problem that needs to be solved urgently.

[0181] In addition, in some embodiments, the time when the signaling sent by different TRPs to activate the TCI state reaches the terminal may be different, and / or the activation delay corresponding to the TCI state required to be activated by different TRPs may also be different, which will cause the terminal to complete the activation of the TCI state corresponding to different TRPs at different times. It may happen that "the TCI states corresponding to some TRPs in the MTRP have been activated by the terminal, but the TCI states corresponding to another part of the TRPs have not yet been activated." At this time, the specific TCI states based on which the terminal and TRP transmit the channel are also a technical problem that needs to be solved urgently.

[0182] FIG2A1 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A1 , the embodiment of the present disclosure relates to a communication method, which is used in a communication system 100. The method includes:

[0183] Step 2101: In the MDCI transmission scenario of MTRP, at least one TRP configures the TCI state set corresponding to the TRP to the terminal.

[0184] Optionally, the MTRP scenario may include multiple TRPs, for example, two TRPs. The figures in the embodiments of the present disclosure (such as FIG. 2A1 and subsequent FIG. 2A3 and FIG. 2B ) are illustrated by taking the MTRP as an example in which two TRPs are included, namely, TRP1 and TRP2. For an introduction to the MDCI transmission scenario of MTRP, please refer to the description before the embodiment of FIG. 2A1.

[0185] Optionally, in the embodiment of Figure 2A1, there may be no communication interaction between different TRPs in the MTRP, that is, different TRPs in the MTRP are independently scheduled (schedule independent), or there may be communication interaction between different TRPs in the MTRP, that is, different TRPs in the MTRP can be jointly scheduled (co-schedule).

[0186] Optionally, different TRPs in the MTRP may each correspond to a TCI state set, each of which may include at least one TCI state. Different TCI states may be used to determine different beams. Furthermore, the TCI state sets corresponding to different TRPs may be the same or different. The different TCI states in the TCI state set may be arranged in a list.

[0187] Optionally, different TRPs in the MTRP may respectively configure the TCI state set corresponding to the TRP to the terminal. Optionally, the TRP may configure the TCI state set corresponding to the TRP to the terminal by sending a second signaling to the terminal. The second signaling may be, for example, Radio Resource Control (RRC) signaling.

[0188] Optionally, the TCI state in the TCI state set can be a TCI state that is alternatively activated by the TRP. The TRP configures the TCI state set corresponding to the TRP to the terminal so that the TRP can subsequently instruct the terminal to activate a TCI state in the TCI state set corresponding to the TRP, so that the terminal can realize channel transmission with the TRP based on the activated TCI state.

[0189] Step 2102: At least one TRP sends a first signaling to the terminal.

[0190] Optionally, different TRPs in the MTRP can respectively send first signaling to the terminal. Optionally, the terminal can receive first signaling sent by at least one TRP respectively. The first signaling can be used by the TRP to instruct the terminal to activate the TCI state. For example, the first signaling can be used by the TRP to instruct the terminal to activate a TCI state in the TCI state set corresponding to the TRP. Optionally, the first signaling can be, for example, a Medium Access Control Control Element (MAC CE) signaling.

[0191] Optionally, Figure 2A2 is a structural diagram of MAC CE signaling according to an embodiment of the present disclosure. As shown in Figure 2A2, different positions in the MAC CE signaling may correspond to different TCI states. Optionally, the above-mentioned TCI state set may include different TCI states and their corresponding serial numbers. Assuming that the serial numbers corresponding to the different TCI states included in the TCI state set are: T0, T1, T2, etc., it can be seen from Figure 2A2 that the "T0" position of the byte Oct 2 of the MAC CE signaling corresponds to the TCI state with serial number T0, the "T8" position of the byte Oct 3 of the MAC CE signaling corresponds to the TCI state with serial number T8, and so on, the "T8" position of the byte Oct N of the MAC CE signaling corresponds to the TCI state with serial number T8. (N-2)×8 "The corresponding serial number of the position is T (N-2)×8TCI state, where N is a positive integer. And, in the case that different positions in the MAC CE signaling correspond to different TCI states, different values ​​carried by different positions of the MAC CE signaling are used to indicate whether the TCI state corresponding to the position is activated. For example, if a position carries a first value (such as 1), it indicates that the TCI state corresponding to the position is activated. If a position carries a second value (such as 0), it indicates that the TCI state corresponding to the position is not activated. For example, when the value carried by the "T8" position of the byte Oct 3 of the MAC CE signaling is "1", it means that the TCI state with the sequence number T8 is activated. When the value carried by the "T8" position of the byte Oct 3 of the MAC CE signaling is "0", it means that the TCI state with the sequence number T8 is not activated.

[0192] Step 2103: TRP determines the first time slot corresponding to the TRP.

[0193] Optionally, the first time slot may be the first time slot when the terminal receives the first signaling sent by the TRP, wherein the first time slots corresponding to different TRPs may be the same or different.

[0194] Optionally, each TRP can determine its own corresponding first time slot, that is, each TRP determines the first time slot when the first signaling sent by itself is received by the terminal. Optionally, the TRP can determine the first time slot corresponding to the TRP based on the starting time slot and / or channel status when it sends the first signaling. Optionally, the TRP can determine the transmission delay between it and the terminal, and the transmission delay can be understood as: the time required for transmission between the TRP and the terminal. Optionally, the TRP can determine the transmission delay based on the channel status, for example, or the TRP can determine the transmission delay based on its historical transmission with the terminal. Afterwards, the TRP can determine the first time slot corresponding to the TRP based on the starting time slot and transmission delay when it sends the first signaling.

[0195] Step 2104: The terminal determines the first time slot corresponding to at least one TRP.

[0196] Optionally, the terminal can determine the first time slot corresponding to each TRP, that is, the terminal can determine the first time slot when the terminal receives the first signaling sent by each TRP.

[0197] Step 2105: The TRP determines the second time corresponding to the TRP based on the first time slot corresponding to the TRP.

[0198] Optionally, the second moment corresponding to the TRP can be used to indicate: the moment when the terminal completes activation of the TCI state to be activated by the TRP. The second moments corresponding to different TRPs are the same or different.

[0199] Optionally, each TRP may determine its own corresponding second moment, that is, each TRP determines the activation completion moment of the TCI state to be activated by itself.

[0200] Optionally, the TRP may determine the second time corresponding to the TRP based on the following formula 1. Formula 1:

[0201] T delay is the second moment corresponding to TRP.

[0202] Optionally, n in the above formula 1 is the first time slot corresponding to the TRP;

[0203] Optionally, T in the above formula 1 HARQ is a hybrid automatic repeat reQuest (HARQ) delay corresponding to the terminal, where the HARQ delay can be understood as, for example, a period between a third moment and a fourth moment, where the third moment can be, for example, a moment when the terminal receives the first signaling, and the fourth moment can be, for example, a moment when the terminal sends HARQ feedback (such as Acknowledgement (ACK) feedback) for the first signaling to the TRP;

[0204] Optionally, the above It is a fixed parameter known to the terminal and TRP.

[0205] Optionally, TO in the above formula 1 k is 0 or 1. Optionally, in some embodiments, the relevant parameters of the TCI state (such as time domain resource parameters) may be included in the synchronization signal block (SSB), wherein, after the terminal determines the TCI state to be activated, the terminal can obtain the relevant parameters corresponding to the TCI state to be activated by receiving and parsing the SSB, and activate the TCI state to be activated based on the determined relevant parameters. In other embodiments, for some TCI states that have been historically activated, the terminal may back up the relevant parameters of the historically activated TCI state. At this time, if the terminal determines that the TCI state to be activated is the TCI state backed up by the terminal, the terminal does not need to receive and parse the SSB, but can directly activate the corresponding TCI state based on the backed-up relevant parameters of the TCI state to be activated. Based on this, in some embodiments, when the TCI state activated by the first signaling is the TCI state backed up by the terminal, TO k When the TCI state activated by the first signaling is not the TCI state backed up by the terminal, the terminal needs to receive and parse the SSB to obtain the relevant parameters corresponding to the TCI state to be activated, then TOk is 1. And, T in the above formula 1 first-SSB It is used to indicate the first time period. The starting time of the first time period is: the time when the terminal receives the first signaling sent by the TRP, and the end time of the first time period is: the time when the terminal receives the first signaling sent by the TRP for the first time. SSB-proc Used to indicate the time period required for the terminal to parse the SSB after receiving it.

[0206] Optionally, the NR slot length in the above formula 1 may indicate the time slot length of a time slot in a new radio (NR) system.

[0207] Step 2106: The terminal determines the second moment corresponding to at least one TRP based on the first time slot corresponding to at least one TRP.

[0208] Optionally, the terminal can determine the second moment corresponding to each TRP based on the first time slot corresponding to each TRP.

[0209] For example, assuming that the MTRP includes two TRPs, namely TRP1 and TRP2, the terminal can determine the second time points corresponding to TRP1 and TRP2 respectively based on the following formula 2.

[0210] Among them, T delay_TRP1 is the second time corresponding to TRP1, n1 is the first time slot corresponding to TRP1; T delay_TRP2 is the second time corresponding to TRP2, n2 is the first time slot corresponding to TRP2, T first-SSB_TRP1 It is used to indicate the second time period. The starting time of the second time period is the time when the terminal receives the first signaling sent by TRP1. The ending time of the second time period is the time when the terminal receives the SSB for the first time after receiving the first signaling sent by TRP1. first-SSB_TRP2 Indicates a third time period, where the starting time of the third time period is the time when the terminal receives the first signaling sent by TRP2, and the ending time of the third time period is the time when the terminal receives the first SSB after receiving the first signaling sent by TRP2. For other parameters in the above formula, refer to the description of the previous embodiment.

[0211] Step 2107: TRP determines the second moment corresponding to the TRP as the first moment corresponding to the TRP.

[0212] Optionally, the TRP may determine its own corresponding second moment as its own corresponding first moment. For example, assuming that the second moment corresponding to the TRP itself is Tdelay , then the terminal can T delay Optionally, the first time may be used to indicate the activation completion time of the TCI state to be activated by at least one TRP in the MTRP.

[0213] Step 2108: The terminal determines the second moments corresponding to different TRPs as the first moments corresponding to different TRPs.

[0214] Optionally, the terminal may determine the second time corresponding to each TRP as the first time corresponding to each TRP. For example, assuming that the MTRP includes two TRPs, namely TRP1 and TRP2, wherein the second time corresponding to TRP1 is T delay_TRP1 ; The second moment corresponding to TRP2 is T delay_TRP2 , then the terminal can T delay_TRP1 Determine the first moment corresponding to TRP1 and set T delay_TRP2 Determine the first moment corresponding to TRP2.

[0215] It can be seen from the above steps 2107 and 2108 that the first moment corresponding to each TRP is actually the activation completion moment of the TCI state to be activated by the TRP. At this time, the first moments corresponding to different TRPs are the same or different.

[0216] Optionally, for the terminal and the TRP, the time period between the first time slot and the first moment corresponding to the TRP can be considered as the time period when the terminal activates the TCI state to be activated by the TRP. At this time, since the TCI state to be activated by the TRP has not yet been fully activated, the TCI state to be activated by the TRP cannot be used for channel transmission between the terminal and the TRP. In addition, after the first moment corresponding to the TRP, it can be considered that the terminal has successfully activated the TCI state to be activated by the TRP. At this time, the TCI state to be activated by the TRP can be used for channel transmission between the terminal and the TRP.

[0217] For example, it is assumed that the MTRP includes two TRPs, namely TRP1 and TRP2, and it is assumed that the TCI state to be activated by TRP1 is TCI state 1, and the TCI state to be activated by TRP2 is TCI state 2. Figure 2A3 is a structural diagram of the first time slot and the first moment corresponding to different TRPs according to an embodiment of the present disclosure. As shown in Figure 2A3, MAC CE1 can send the first signaling to TRP1, T activationDelay_TRP1 It can be the activation delay required when the TCI state corresponding to TRP1 is activated by the terminal, MAC CE2 can be the first signaling sent by TRP2, T activationDelay_TRP2It can be the activation delay required when the TCI state corresponding to TRP2 is activated by the terminal. The first time slot corresponding to TRP1 can be located at time T0 in Figure 2A3. The first time corresponding to TRP1 can be time T2 in Figure 2A3. After time T2, it means that TCI state 1 to be activated by TRP1 is successfully activated. At this time, TRP1 can perform channel transmission based on the activated TCI state 1. For example, TRP1 can schedule PDSCH 1 of TRP1 based on the activated TCI state 1. The first time slot corresponding to TRP2 can be located at time T1 in Figure 2A3. The first time corresponding to TRP2 can be time T3 in Figure 2A3. After time T3, it means that TCI state 2 to be activated by TRP2 is successfully activated. At this time, TRP2 can perform channel transmission based on the activated TCI state 2. For example, TRP2 can schedule PDSCH 2 of TRP2 based on the activated TCI state 2.

[0218] From the above, it can be seen that in the embodiment of Figure 2A1, the first moment corresponding to different TRPs actually means: the moment when the terminal completes activation of the TCI state corresponding to the TRP (that is, the TCI state to be activated by the first signaling sent by the TRP). That is, for each TRP, before the first moment corresponding to the TRP, the TCI state corresponding to the TRP has not yet completed activation. At this time, the TCI state transmission channel corresponding to the TRP cannot be used between the TRP and the terminal; and after the first moment corresponding to the TRP, the TCI state corresponding to the TRP is activated. At this time, the TCI state transmission channel corresponding to the TRP can be used between the TRP and the terminal.

[0219] Step 2109: The terminal activates the TCI states to be activated by different TRPs.

[0220] Optionally, the terminal may obtain relevant parameters of the TCI state to be activated by the TRP, and activate the corresponding TCI state based on the relevant parameters. For details on this part, please refer to the above description.

[0221] Step 2110: After the TRP sends the first signaling to the terminal, before the first moment corresponding to the TRP, the TRP sends the first channel to the terminal based on the first TCI state corresponding to the TRP.

[0222] Optionally, the first TCI state may be: the TCI state (or old TCI state) used when the terminal and the TRP send and / or receive the first channel before the TRP sends the first signaling to the terminal. The first channel may be, for example, a PSDCH.

[0223] Optionally, in some embodiments, after the TRP sends the first signaling to the terminal and before the first moment corresponding to the TRP, the terminal is in the stage of "activating the TCI state to be activated by the TRP" and will not successfully activate the TCI state to be activated by the TRP. Therefore, channel transmission cannot be performed between the TRP and the terminal based on the TCI state to be activated by the TRP. At this time, if the TRP needs to send the first channel to the terminal, it can send the first channel based on the above-mentioned first TCI state (that is, the old TCI state), and similarly, after the terminal receives the first signaling sent by the TRP and before the first moment corresponding to the TRP, the terminal can receive the first channel sent by the TRP based on the first TCI state corresponding to the TRP.

[0224] For example, referring to the above-mentioned FIG2A3, for TRP1, the above-mentioned "after TRP sends the first signaling to the terminal, before the first moment corresponding to TRP" is the T0-T2 time period in FIG2A3. In the T0-T2 time period, the TCI state required to be activated by TRP1 is not fully activated. Then, the first channel can be transmitted between TRP1 and the terminal based on the TCI state used by TRP1 before the T0 moment (that is, the first TCI state corresponding to TRP1). For TRP2, the above-mentioned "after TRP sends the first signaling to the terminal, before the first moment corresponding to TRP" is the T1-T3 time period in FIG2A3. In the T1-T3 time period, the TCI state required to be activated by TRP2 is not fully activated. Then, the first channel can be transmitted between TRP2 and the terminal based on the TCI state used by TRP2 before the T1 moment (that is, the first TCI state corresponding to TRP2).

[0225] Step 2111: After the first moment corresponding to TRP, TRP sends the first channel to the terminal based on the first TCI state corresponding to TRP, or TRP sends the first channel to the terminal based on the second TCI state corresponding to TRP.

[0226] Optionally, in some embodiments, after the first moment corresponding to the TRP, the terminal may receive the first channel sent by the TRP based on a first TCI state corresponding to the TRP, or receive the first channel sent by the TRP based on a second TCI state corresponding to the TRP. Optionally, the second TCI state corresponding to the TRP may be the TCI state to be activated by the first signaling sent by the TRP.

[0227] Optionally, as can be seen from the above content, the first moment corresponding to the TRP actually means: the moment when the terminal completes activation of the TCI state corresponding to the TRP (that is, the TCI state to be activated by the first signaling sent by the TRP). Optionally, for each TRP, after the first moment corresponding to the TRP, it means that the activation of the TCI state corresponding to the TRP is completed. At this time, the TRP can use its corresponding TCI state (that is, the second TCI state mentioned above) to send the first channel. And, after the first moment corresponding to the TRP, the TRP can also choose not to use the second TCI state corresponding to the TRP to send the first channel, but can also choose to use its corresponding first TCI state to send the first channel. Among them, the "after the first moment corresponding to the TRP, specifically based on the first TCI state corresponding to the TRP to send the first channel to the terminal, or based on the second TCI state corresponding to the TRP to send the first channel to the terminal" here is mainly determined by judging whether the resources occupied by the first channel sent by the TRP overlap with the resources occupied by the first channels sent by other TRPs in the MTRP, and whether other TRPs have completed the activation of the corresponding TCI states.

[0228] Optionally, in some embodiments, after the first moment corresponding to the TRP, if the terminal has not completed the activation of the TCI states corresponding to other TRPs in the MTRP, and at this time, the TRP and other TRPs all need to send the first channel, and the resources occupied by the first channel scheduled to be sent by the TRP overlap with the resources occupied by the first channels scheduled to be sent by other TRPs, then the TRP will send the first channel to the terminal based on the first TCI state corresponding to the TRP, and other TRPs will also send the first channel to the terminal based on the first TCI state corresponding to other TRPs. At this time, the terminal can receive the first channel sent by each TRP based on the first TCI state corresponding to each TRP.

[0229] For example, referring to Figure 2A3, for TRP1, the above-mentioned "after the first moment corresponding to TRP" is after the T2 moment in Figure 2A3. Optionally, during the T2-T3 time period in Figure 2A3, the TCI state 1 required to be activated by TRP1 is activated, while the TCI state 2 required to be activated by TRP2 is not activated. At this time, if TRP1 needs to schedule the sending of PDSCH 1 and TRP2 needs to schedule the sending of PDSCH 2, and the resources occupied by the PDSCH 1 scheduled to be sent by TRP1 overlap with the resources occupied by the PDSCH 2 scheduled to be sent by TRP2, then TRP1 can send PDSCH 1 to the terminal based on the first TCI state corresponding to TRP1 (that is, the TCI state used when TRP1 sent PDSCH before T0), and TRP2 can send PDSCH 2 to the terminal based on the first TCI state corresponding to TRP2 (that is, the TCI state used when TRP2 sent PDSCH before T1). At this time, the terminal can receive PDSCH 1 sent by TRP1 based on the first TCI state corresponding to TRP1, and receive PDSCH 2 sent by TRP2 based on the first TCI state corresponding to TRP2.

[0230] The following is an introduction to the principle of the above-mentioned operation: "After the first moment corresponding to the TRP, if the terminal has not completed the activation of the TCI states corresponding to other TRPs in the MTRP, and at this time, the TRP and other TRPs all need to send the first channel, and the resources occupied by the first channel scheduled to be sent by the TRP overlap with the resources occupied by the first channels scheduled to be sent by other TRPs, then the TRP must send the first channel to the terminal based on the first TCI state corresponding to the TRP, and other TRPs must also send the first channel to the terminal based on the first TCI state corresponding to other TRPs."

[0231] Optionally, in a communication system, in an MTRP scenario, the TCI state corresponding to the TRP in the activated MTRP is usually updated multiple times, wherein the TCI state corresponding to all TRPs in the activated MTRP is updated each time. Taking the MTRP including two TRPs, namely TRP1 and TRP2, as an example, when the TCI state is activated for the first time, TRP1 can instruct the terminal to activate TCI state a, and TRP2 can instruct the terminal to activate TCI state b, wherein TCI state a is used to transmit PDSCH between the terminal and TRP1, and TCI state b is used to transmit PDSCH between the terminal and TRP2, and the TCI state a and TCI state b can be referred to as a pair of TCI state pairs. Optionally, when the TCI state is updated for the second time, TRP1 can instruct the terminal to activate TCI state c, and TRP2 can instruct the terminal to activate TCI state d, wherein TCI state c is used to transmit PDSCH between the terminal and TRP1, and TCI state d is used to transmit PDSCH between the terminal and TRP2, and the TCI state c and TCI state d can be referred to as a pair of TCI state pairs. Among them, it should be noted that when the terminal transmits channels based on the TCI state in the TCI state pair and different TRPs at the same time (such as: the terminal transmits PDSCH based on TCI state a and TRP1, and transmits PDSCH based on TCI state b and TRP2 at the same time; or, the terminal transmits PDSCH based on TCI state c and TRP1, and transmits PDSCH based on TCI state d and TRP2 at the same time), the channel interference is less, and when the terminal transmits channels based on the TCI state in different TCI state pairs and different TRPs at the same time (such as: the terminal transmits PDSCH based on TCI state a and TRP1, and transmits PDSCH based on TCI state d and TRP2 at the same time; or, the terminal transmits PDSCH based on TCI state c and TRP1, and transmits PDSCH based on TCI state b and TRP2 at the same time), the channel interference is larger.

[0232] Optionally, in some embodiments, the first TCI state corresponding to different TRPs in the MTRP (i.e., the old TCI state activated last time) may belong to the same TRP state pair, and the second TCI state corresponding to different TRPs in the MTRP (i.e., the new TCI state activated this time) may belong to the same TRP state pair. Based on this, for TRP1 and TRP2 in MTRP, in some embodiments, if the TCI state corresponding to TRP1 is activated and the TCI state corresponding to TRP2 is not activated, that is, in the T2-T3 time period of reference Figure 2A3, if the resources occupied by PDSCH 1 scheduled to be sent by TRP1 overlap with the resources occupied by PDSCH 2 scheduled to be sent by TRP2, it means that PDSCH 1 of TRP1 and PDSCH 2 of TRP2 are to be sent simultaneously. At this time, in order to prevent inter-channel interference, it is necessary to use the same TCI state pair to simultaneously transmit PDSCH 1 of TRP1 and PDSCH 2 of TRP2. However, at present, since the TCI state corresponding to TRP2 is not activated, TRP2 can only use the first TCI state corresponding to TRP2 to send PDSCH 2. Therefore, in order to achieve "using the same TCI state pair to simultaneously transmit PDSCH 1 of TRP1 and PDSCH of TRP2 2”, although the second TCI state corresponding to TRP1 has been activated, TRP1 still uses the first TCI state corresponding to TRP1 to send PDSCH 1.

[0233] Optionally, in some other embodiments, after the first moment corresponding to the TRP, if the terminal has not completed the activation of the TCI states corresponding to other TRPs in the MTRP except the TRP, and at this time, the TRP and other TRPs all need to send the first channel, but the resources occupied by the first channel scheduled to be sent by the TRP do not overlap with the resources occupied by the first channels scheduled to be sent by other TRPs, that is, the first channel scheduled to be sent by the TRP and the first channels scheduled to be sent by other TRPs will not be sent at the same time, then there is no interference problem. At this time, the TRP can send the first channel to the terminal based on the first TCI state or the second TCI state corresponding to the TRP, and other TRPs can send the first channel to the terminal based on the first TCI state corresponding to other TRPs. At this time, for the terminal, for the TRP whose TCI state has been activated, the terminal can use time division multiplexing (TDM) to receive the first channel sent by the TRP based on the first TCI state or the second TCI state corresponding to the TRP. For the TRP whose TCI state has not been activated, the terminal can receive the first channel sent by the TRP based on the first TCI state corresponding to the TRP.

[0234] For example, referring to Figure 2A3, during the T2-T3 time period of Figure 2A3, the TCI state 1 required to be activated by TRP1 is activated, while the TCI state 2 required to be activated by TRP2 is not activated. At this time, if TRP1 needs to schedule the sending of PDSCH 1 and TRP2 needs to schedule the sending of PDSCH 2, and the resources occupied by the PDSCH 1 scheduled to be sent by TRP1 do not overlap with the resources occupied by the PDSCH 2 scheduled to be sent by TRP2, then TRP1 can send PDSCH 1 to the terminal based on the first TCI state corresponding to TRP1 (that is, the TCI state used when TRP1 sent PDSCH before time T0) or the second TCI state corresponding to TRP1 (that is, the activated TCI state 1 corresponding to time T2), and TRP2 can send PDSCH 2 to the terminal based on the first TCI state corresponding to TRP2 (that is, the TCI state used when TRP2 sent PDSCH before time T1). At this time, the terminal can receive PDSCH 1 sent by TRP1 based on the first TCI state or the second TCI state corresponding to TRP1, and receive PDSCH 2 sent by TRP2 based on the first TCI state corresponding to TRP2.

[0235] Optionally, the following is a detailed introduction to the principle of "after the first moment corresponding to the TRP, if the terminal has not completed the activation of the TCI states corresponding to other TRPs in the MTRP, and at this time, the TRP and other TRPs need to send the first channel, but the resources occupied by the first channel scheduled to be sent by the TRP do not overlap with the resources occupied by the first channels scheduled to be sent by other TRPs, then the TRP sends the first channel to the terminal based on the first TCI state or the second TCI state corresponding to the TRP, and other TRPs can send the first channel to the terminal based on their corresponding first TCI states."

[0236] Among them, when the resources occupied by the first channel sent by TRP scheduling do not overlap with the resources occupied by the first channels sent by other TRP scheduling, it means that there is no need to send the first channels scheduled by different TRPs at the same time. At this time, even if different TRPs transmit channels to the terminal at the same time based on the TCI states in different TCI state pairs, it will not cause channel interference. Therefore, the TRP can send the first channel to the terminal based on the first TCI state or the second TCI state corresponding to the TRP, and other TRPs can send the first channel to the terminal based on their corresponding first TCI state.

[0237] Optionally, in some other embodiments, after the first moment corresponding to the TRP, if the terminal has also completed the activation of the TCI states corresponding to other TRPs in the MTRP, the TRP can send the first channel to the terminal based on the first TCI state or the second TCI state corresponding to the TRP, and other TRPs can send the first channel to the terminal based on the first TCI state or the second TCI state corresponding to other TRPs. Optionally, when the resources occupied by the first channels scheduled to be sent by different TRPs overlap, different TRPs should respectively send the first channels based on their corresponding TCI states belonging to the same TCI state pair. For example, different TRPs can respectively send the first channels based on their corresponding first TCI states (such as TRP1 sends the first channel based on the first TCI state corresponding to TRP1, and TRP2 also sends the first channel based on the first TCI state corresponding to TRP2), or, different TRPs can respectively send the first channels based on their corresponding second TCI states (such as TRP1 sends the first channel based on the second TCI state corresponding to TRP1, and TRP2 also sends the first channel based on the second TCI state corresponding to TRP2); when the resources occupied by the first channels scheduled to be sent by different TRPs do not overlap, different TRPs can respectively send the first channels based on their corresponding TCI states belonging to the same TCI state pair or different TCI state pairs. For example: TRP1 sends the first channel based on the first TCI state corresponding to TRP1, and TRP2 also sends the first channel based on the first TCI state corresponding to TRP2; or, TRP1 sends the first channel based on the second TCI state corresponding to TRP1, and TRP2 sends the first channel based on the first TCI state corresponding to TRP2, etc.

[0238] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2111. 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.

[0239] 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.

[0240] 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 for use in a communication system 100, the method comprising:

[0241] Step 2201: In the MDCI transmission scenario of MTRP, at least one TRP configures the TCI state set corresponding to the TRP to the terminal.

[0242] Step 2202: At least one TRP sends a first signaling to the terminal.

[0243] Step 2203: TRP determines the first time slot corresponding to the TRP.

[0244] Step 2204: The terminal determines the first time slot corresponding to at least one TRP.

[0245] Step 2205: The TRP determines the second time corresponding to the TRP based on the first time slot corresponding to the TRP.

[0246] Step 2206: The terminal determines the second moment corresponding to at least one TRP based on the first time slot corresponding to at least one TRP.

[0247] For a detailed description of steps 2201 - 2206 , please refer to the above embodiment description.

[0248] Step 2207: There is communication interaction between different TRPs in the MTRP. The TRP obtains the second moments corresponding to other TRPs from other TRPs in the MTRP except the TRP itself. The TRP determines the second moment with the largest value among all the second moments corresponding to the MTRP as the first moment.

[0249] Step 2208: The terminal determines the second time with the largest value among all the second times corresponding to the MTRP as the first time.

[0250] It can be seen from the above steps 2207 and 2208 that the first moment corresponding to each TRP is the same, and the first moment is the moment when all the TCI states to be activated by all TRPs in the MTRP are activated. That is, after the terminal receives the first signaling sent by the first TRP, the period before the first moment is the period during which the terminal activates the TCI states to be activated for all TRPs in the MTRP, and after the first moment, the TCI states to be activated for all TRPs in the MTRP are activated.

[0251] For example, it is assumed that the MTRP includes two TRPs, namely TRP1 and TRP2, and it is assumed that the TCI state to be activated by TRP1 is TCI state 1 and the TCI state to be activated by TRP2 is TCI state 2. As shown in FIG2A3 above, MAC CE1 can be the first signaling sent by TRP1. activationDelay_TRP1It can be the activation time required when the TCI state corresponding to TRP1 is activated by the terminal, MAC CE2 can be the first signaling sent by TRP2, T activationDelay_TRP2 It can be the activation time required for the TCI state corresponding to TRP2 to be activated by the terminal. The first time slot corresponding to TRP1 can be located at time T0 in Figure 2A3, and the second time corresponding to TRP1 can be time T2 in Figure 2A3. After time T2, it means that TCI state 1 to be activated by TRP1 is successfully activated. At this time, TRP1 can perform channel transmission based on the activated TCI state 1. For example, TRP1 can schedule PDSCH 1 of TRP1 based on the activated TCI state 1. The first time slot corresponding to TRP2 can be located at time T1 in Figure 2A3, and the second time corresponding to TRP2 can be time T3 in Figure 2A3. After time T3, it means that TCI state 2 to be activated by TRP2 is successfully activated. At this time, TRP2 can perform channel transmission based on the activated TCI state 2. For example, TRP2 can schedule PDSCH 2 of TRP2 based on the activated TCI state 2. The first moment determined above may be the moment T3 in FIG. 2A3 , wherein at the moment T3 , the TCI states corresponding to TRP1 and TRP2 are both activated.

[0252] Step 2209: The terminal activates the TCI states to be activated by different TRPs.

[0253] For a detailed description of step 2209, please refer to the above embodiment description.

[0254] Step 2210: After TRP sends the first signaling to the terminal, before the first moment corresponding to TRP, send the first channel to the terminal based on the first TCI state corresponding to TRP, or send the first channel to the terminal based on the second TCI state corresponding to TRP.

[0255] For the description of the first TCI state or the second TCI state, please refer to the above embodiments.

[0256] Optionally, it can be seen from the above embodiment that the first moment is: the moment when all the TCI states to be activated by all the TRPs of the MTRP have completed activation. It can be seen from this that after the TRP sends the first signaling to the terminal, before the first moment corresponding to the TRP, it is possible that the TCI states corresponding to any TRP in the MTRP have not completed activation, or it is also possible that the TCI states corresponding to some of the TRPs in the MTRP have completed activation, while the activation of other TRPs has not been completed. Based on this, when the TCI states corresponding to any TRP in the MTRP have not completed activation, each TRP can send a first channel based on the first TCI state corresponding to the TRP. At this time, the terminal can receive the first channel sent by the TRP based on the first TCI state corresponding to each TRP. When the TCI states corresponding to some TRPs in the MTRP have completed activation, while the activation of another part of the TRP has not been completed, if the resources occupied by the first channels scheduled to be sent by the two parts of the TRP overlap, each TRP can send a first channel based on the first TCI state corresponding to the TRP. At this time, the terminal can receive the first channel sent by the TRP based on the first TCI state corresponding to each TRP. When the TCI states corresponding to some TRPs in the MTRP are activated, while the activation of the other TRPs is not completed, if the resources occupied by the first channels scheduled to be sent by the two TRPs do not overlap, the TRP whose TCI state is activated can send the first channel based on the first TCI state or the second TCI state corresponding to the TRP, and the TRP whose TCI state is not activated can send the first channel based on the first TCI state corresponding to the TRP. At this time, for the terminal, the TRP whose TCI state is activated can receive the first channel based on the first TCI state or the second TCI state corresponding to the TRP, and the TRP whose TCI state is not activated can receive the first channel based on the first TCI state corresponding to the TRP.

[0257] For example, referring to Figure 2A3, the above-mentioned "after TRP sends the first signaling to the terminal and before the first moment corresponding to TRP" is the T0-T3 time period in Figure 2A3. Optionally, when it is between the T0-T2 time period in Figure 2A3, the TCI state required to be activated by TRP1 and the TCI state required to be activated by TRP2 are not activated, then TRP1 can send PDSCH 1 to the terminal based on the first TCI state corresponding to TRP1 (that is, the TCI state used when TRP1 sends PDSCH before the T0 moment), and TRP2 can send PDSCH 2 to the terminal based on the first TCI state corresponding to TRP2 (that is, the TCI state used when TRP2 sends PDSCH before the T1 moment). Optionally, during the time period T2-T3, the TCI state required to be activated by TRP1 has been activated, while the TCI state required to be activated by TRP2 has not been activated. In this case, if the resources occupied by PDSCH 1 scheduled to be sent by TRP1 overlap with the resources occupied by PDSCH 2 scheduled to be sent by TRP2, TRP1 may send PDSCH 1 to the terminal based on the first TCI state corresponding to TRP1, and TRP2 may send PDSCH 2 to the terminal based on the first TCI state corresponding to TRP2. Optionally, during the time period T2-T3, if the resources occupied by PDSCH 1 scheduled to be sent by TRP1 do not overlap with the resources occupied by PDSCH 2 scheduled to be sent by TRP2, TRP1 may send PDSCH 1 to the terminal based on the first TCI state corresponding to TRP1 or the second TCI state corresponding to TRP1 (i.e., the activated TCI state 1 corresponding to time T2), and TRP2 may send PDSCH 2 to the terminal based on the first TCI state corresponding to TRP2.

[0258] Step 2211: After the first moment corresponding to TRP, send the first channel to the terminal based on the second TCI state corresponding to TRP.

[0259] Optionally, in some embodiments, after the first moment corresponding to the TRP, it means that the TCI states to be activated by all TRPs of the MTRP have been activated. At this time, each TRP can send the first channel to the terminal based on the corresponding second TCI state. At this time, the terminal can receive the first channel sent by the TRP based on the second TCI state corresponding to the TRP.

[0260] It should be noted that, in some embodiments, after the first moment corresponding to the TRP, the TRP may optionally use the above-mentioned first TCI state (ie, the old TCI state) to send the first channel.

[0261] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2201 to S2211. 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.

[0262] 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.

[0263] FIG3A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a communication method for TRP, the method comprising:

[0264] Step 3101: In the MDCI transmission scenario of MTRP, TRP configures the TCI state set corresponding to TRP to the terminal.

[0265] Step 3102: The TRP sends a first signaling to the terminal.

[0266] Step 3103: TRP determines the first time slot corresponding to the TRP.

[0267] Step 3104: The TRP determines the second time corresponding to the TRP based on the first time slot corresponding to the TRP.

[0268] Step 3105: TRP determines the second moment corresponding to the TRP as the first moment corresponding to the TRP.

[0269] Step 3106: After the TRP sends the first signaling to the terminal, before the first moment corresponding to the TRP, the TRP sends the first channel to the terminal based on the first TCI state corresponding to the TRP.

[0270] Step 3107: After the first moment corresponding to the TRP, the TRP sends the first channel to the terminal based on the first TCI state corresponding to the TRP, or the TRP sends the first channel to the terminal based on the second TCI state corresponding to the TRP.

[0271] For a detailed description of steps 3101 - 3107 , please refer to the above embodiment description.

[0272] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3107. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, and steps S3101+S3102 may be implemented as independent embodiments, but are not limited thereto.

[0273] 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.

[0274] FIG3B is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the present disclosure embodiment relates to a communication method for TRP, the method comprising:

[0275] Step 3201: In the MDCI transmission scenario of MTRP, TRP configures the TCI state set corresponding to TRP to the terminal.

[0276] Step 3202: The TRP sends a first signaling to the terminal.

[0277] Step 3203: TRP determines the first time slot corresponding to the TRP.

[0278] Step 3204: The TRP determines the second time corresponding to the TRP based on the first time slot corresponding to the TRP.

[0279] Step 3205: There is communication interaction between different TRPs in the MTRP. The TRP obtains the second moments corresponding to other TRPs from other TRPs in the MTRP except the TRP itself. The TRP determines the second moment with the largest value among all the second moments corresponding to the MTRP as the first moment.

[0280] Step 3206: After TRP sends the first signaling to the terminal, before the first moment corresponding to TRP, send the first channel to the terminal based on the first TCI state corresponding to TRP, or send the first channel to the terminal based on the second TCI state corresponding to TRP.

[0281] Step 3207: After the first moment corresponding to the TRP, send the first channel to the terminal based on the second TCI state corresponding to the TRP.

[0282] For a detailed description of steps 3201 - 3207 , please refer to the above embodiment description.

[0283] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3201 to S3207. For example, step S3201 may be implemented as an independent embodiment, step S3202 may be implemented as an independent embodiment, and steps S3201+S3202 may be implemented as independent embodiments, but are not limited thereto.

[0284] 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.

[0285] FIG3C is an interactive diagram 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 TRP, the method comprising:

[0286] Step 3301: In a multi-downlink control information MDCI transmission scenario with multiple transmitting and receiving points MTRP, when the TRP sends a first signaling to the terminal, the TRP determines a first moment.

[0287] Step 3202: TRP sends a first channel to the terminal based on the first moment.

[0288] Optionally, the first signaling is used by the TRP to instruct the terminal to activate the transmission configuration indication TCI state state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP;

[0289] The first signaling is used by the TRP to instruct the terminal to activate a TCI state in the TCI state set corresponding to the TRP; wherein different TRPs correspond to TCI state sets, and the TCI state set includes at least one TCI state;

[0290] The method further comprises:

[0291] Configure the TCI state set corresponding to the TRP for the terminal.

[0292] Optionally, determining the first moment includes:

[0293] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0294] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0295] The second moment corresponding to the TRP is determined as the first moment corresponding to the TRP, wherein the first moments corresponding to different TRPs are the same or different.

[0296] Optionally, there is no communication interaction between different TRPs in the MTRP, or there is communication interaction between different TRPs in the MTRP.

[0297] Optionally, the sending the first channel to the terminal based on the first moment includes at least one of the following:

[0298] After the TRP sends the first signaling to the terminal, and before the first time corresponding to the TRP, a first channel is sent to the terminal based on a first TCI state corresponding to the TRP; wherein the first TCI state is: a TCI state used when sending and / or receiving the first channel between the TRP and the terminal before the TRP sends the first signaling to the terminal;

[0299] After the first moment corresponding to the TRP, a first channel is sent to the terminal based on the first TCI state corresponding to the TRP, or a first channel is sent to the terminal based on the second TCI state corresponding to the TRP; wherein the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP.

[0300] Optionally, determining the first moment includes:

[0301] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0302] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0303] There is communication interaction between different TRPs in the MTRP, and obtaining second moments corresponding to other TRPs in the MTRP except the TRP;

[0304] The second moment with the largest value among all the second moments corresponding to the MTRP is determined as the first moment, wherein the first moments corresponding to different TRPs are the same.

[0305] Optionally, the sending the first channel to the terminal based on the first moment includes at least one of the following:

[0306] After the TRP sends the first signaling to the terminal, before the first moment, the first channel is sent to the terminal based on a first TCI state corresponding to the TRP, or the first channel is sent to the terminal based on a second TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP;

[0307] After the first moment, a first channel is sent to the terminal based on a second TCI state corresponding to the TRP.

[0308] For a detailed description of steps 3301 - 3302 , please refer to the above embodiment description.

[0309] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3301 and S3302. For example, step S3301 may be implemented as an independent embodiment, step S3302 may be implemented as an independent embodiment, and steps S3301+S3302 may be implemented as independent embodiments, but are not limited thereto.

[0310] 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.

[0311] FIG4A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a communication method for a terminal, the method comprising:

[0312] Step 4101: In the MDCI transmission scenario of MTRP, the terminal receives the TCI state set corresponding to the TRP configured by TRP.

[0313] Step 4102: The terminal receives the first signaling sent by the TRP.

[0314] Step 4103: The terminal determines the first time slot corresponding to at least one TRP.

[0315] Step 4104: The terminal determines the second moment corresponding to at least one TRP based on the first time slot corresponding to at least one TRP.

[0316] Step 4105: The terminal determines the second moments corresponding to different TRPs as the first moments corresponding to different TRPs.

[0317] Step 4106: The terminal activates the TCI states to be activated by different TRPs.

[0318] Step 4107: After the terminal receives the first signaling sent by the TRP and before the first moment corresponding to the TRP, the terminal receives the first channel based on the first TCI state corresponding to the TRP.

[0319] Step 4108: After the first moment corresponding to the TRP, the terminal receives the first channel based on the first TCI state corresponding to the TRP, or the terminal receives the first channel based on the second TCI state corresponding to the TRP.

[0320] For a detailed description of steps 4101-4108, please refer to the above embodiment.

[0321] The communication method involved in the embodiment of the present disclosure may include at least one of steps S4101 to S4108. For example, step S4101 may be implemented as an independent embodiment, and step S4102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0322] 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.

[0323] FIG4B is an interactive diagram 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 terminal, the method comprising:

[0324] Step 4201: In the MDCI transmission scenario of MTRP, the terminal receives the TCI state set corresponding to the TRP configured by TRP.

[0325] Step 4202: The terminal receives the first signaling sent by TRP.

[0326] Step 4203: The terminal determines the first time slot corresponding to at least one TRP.

[0327] Step 4204: The terminal determines the second moment corresponding to at least one TRP based on the first time slot corresponding to at least one TRP.

[0328] Step 4205: The terminal determines the second time with the largest value among all the second times corresponding to the MTRP as the first time.

[0329] Step 4206: The terminal activates the TCI states to be activated by different TRPs.

[0330] Step 4207: After the terminal receives the first signaling sent by the TRP and before the first moment corresponding to the TRP, the terminal receives the first channel based on the first TCI state corresponding to the TRP, or the terminal receives the first channel based on the second TCI state corresponding to the TRP.

[0331] Step 4208: After the first moment corresponding to the TRP, the terminal receives the first channel based on the second TCI state corresponding to the TRP.

[0332] For a detailed introduction to steps 4201-4208, please refer to the contents of the above embodiment.

[0333] The communication method involved in the embodiment of the present disclosure may include at least one of steps S4201 to S4208. For example, step S4201 may be implemented as an independent embodiment, and step S4202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0334] 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.

[0335] FIG4C is an interactive diagram 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 TRP, the method comprising:

[0336] Step 4301: In a multi-downlink control information MDCI transmission scenario with multiple transmitting and receiving points MTRP, when a terminal receives a first signaling sent by at least one TRP, the terminal determines a first moment.

[0337] Step 4202: The terminal sends a first channel to the terminal based on the first moment.

[0338] Optionally, the first signaling is used by the TRP to instruct the terminal to activate a TCI state in a TCI state set corresponding to the TRP; wherein different TRPs correspond to TCI state sets respectively, and the TCI state set includes at least one TCI state;

[0339] The method further comprises:

[0340] Receive a TCI state set corresponding to at least one TRP configured by the TRP.

[0341] Optionally, determining the first moment includes:

[0342] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0343] Determine, based on a first time slot corresponding to at least one TRP, a second time corresponding to at least one TRP, where the second time is used to indicate a time at which activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0344] The second moment corresponding to the TRP is determined as the first moment corresponding to the TRP, wherein the first moments corresponding to different TRPs are the same or different.

[0345] Optionally, there is no communication interaction between different TRPs in the MTRP, or there is communication interaction between different TRPs in the MTRP.

[0346] Optionally, the first channel for receiving the TRP based on the first moment includes at least one of the following:

[0347] After the terminal receives the first signaling sent by the TRP and before the first time corresponding to the TRP, the terminal receives the first channel sent by the TRP based on the first TCI state corresponding to the TRP; wherein the first TCI state is: before the TRP sends the first signaling to the terminal, the TCI state used when the first channel is sent and / or received between the TRP and the terminal;

[0348] After the first moment corresponding to the TRP, the first channel sent by the TRP is received based on the first TCI state corresponding to the TRP, or the first channel sent by the TRP is received based on the second TCI state corresponding to the TRP; wherein the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP.

[0349] Optionally, determining the first moment includes:

[0350] Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different;

[0351] Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: a time when activation of the TCI state to be activated by the TRP is completed, and the second time corresponding to different TRPs may be the same or different;

[0352] The second moment with the largest value among all the second moments corresponding to the MTRP is determined as the first moment, wherein the first moments corresponding to different TRPs are the same.

[0353] Optionally, the first channel for receiving the TRP based on the first moment includes at least one of the following:

[0354] After the terminal receives the first signaling sent by the TRP, and before the first moment, the terminal receives the first channel sent by the TRP based on the first TCI state corresponding to the TRP, or receives the first channel sent by the TRP based on the second TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP;

[0355] After the first moment, the first channel sent by the TRP is received based on the second TCI state corresponding to the TRP.

[0356] For a detailed description of steps 4301-4302, please refer to the above embodiment description.

[0357] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3301 and S3302. For example, step S3301 may be implemented as an independent embodiment, step S3302 may be implemented as an independent embodiment, and steps S3301+S3302 may be implemented as independent embodiments, but are not limited thereto.

[0358] 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.

[0359] Figure 5A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 5A, the embodiment of the present disclosure relates to a communication method for a communication system including a TRP and a terminal. The method includes at least one of the following:

[0360] Step 5101: In an MDCI transmission scenario of an MTRP, when a TRP sends a first signaling to a terminal, the TRP determines a first time.

[0361] Step 5102: The TRP sends a first channel to the terminal based on the first time;

[0362] Step 5103: In the MDCI transmission scenario of the MTRP, when the terminal receives first signaling sent by at least one TRP, the terminal determines a first time;

[0363] Step 5104: The terminal receives the first channel sent by the TRP based on the first moment.

[0364] Optional implementations of steps 5101 to 5104 can be found in the above embodiments.

[0365] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, TRP side, terminal side, etc., which will not be repeated here.

[0366] The communication method involved in the embodiment of the present disclosure may include at least one of steps S5101 to S5104. For example, step S5101 may be implemented as an independent embodiment, and step S5102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0367] 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.

[0368] The following is an exemplary introduction to the above method.

[0369] In legacy Rel-15 / 16, the MAC CE-based TCI state list requires a single TRP defined for the following known cases.

[0370] If the target TCI state is known, upon receiving the PDSCH carrying the MAC-CE active TCI state list update in time slot n, the UE shall be able to The first time slot thereafter receives the PDCCH to schedule the PDSCH with the new target TCI state. THARQ, Tfirst-SSB, TSSB-proc, and TOk are defined in clause 8.10.3.

[0371] The base station (NW) configures a TCI state list for the PDSCH of a TRP via RRC. The MAC CE can then activate one or more TCI states in the list. 38.321 defines the MAC CE-based TCI state list activation command. The MAC CE structure diagram can be referenced as shown in Figure 2A3 above.

[0372] If the MAC CE activates more than one TCI state, the DCI will then indicate to the UE the TCI state actually used. If the MAC CE activates only one TCI state in the list, the TCI state will be used directly by the PDSCH without further DCI indication.

[0373] For the mTRP case, each TRP will send a TCI state list update command. In actual deployments, it is difficult for the UE to maintain more than one active TCI state for a TRP. It is more meaningful to consider a case where there is only one TCI state on a list. Assuming there are two TRPs, the two TCI states in the two lists will be directly activated for the two PDSCHs.

[0374] For simultaneous reception, two PDSCHs will be received simultaneously from two TRPs. The TCI state activation delay requirements for the two PDSCHs need to be considered. If the UE can receive PDSCHs from two TRPs simultaneously, both TCI state activations must have completed. If one TCI state activation has not yet completed, the UE cannot be scheduled with two PDSCHs.

[0375] For the sDCI case, one MAC CE can activate two TCI states. Two TRPs will activate two MAC CEs in parallel, and the total delay will depend on the longest delay between the two TCI activations.

[0376] For mDCI, the problem is more complicated. Two MAC CEs will be triggered for two independent TCI state activations. They may not arrive at the same time. As shown in Figure 2A2 above, the TCI activation endpoint (i.e., the activation completion time) of each TRP may be different. The TCI activation endpoint of TRP1 is T2. The TCI activation endpoint of Trp 2 is T3. After the UE activates two target TCI states from two Trps, the UE can only receive two PDSCHs. For example, starting from T3, the UE can be scheduled with two PDSCHs with the new TCI state pair. The maximum delay between the two activation times will be selected as the total delay.

[0377] However, if two Trps schedule PDSCH independently and there is no cooperation between the two Trps, it is difficult to define the maximum delay between the two Trps. For example, TRP1 does not know when the TCI state activation of TRP2 ends. Therefore, the requirements and corresponding UE procedures will be defined according to different mTRP scenarios.

[0378] Scenario 1: Two TRPs independently schedule PDSCH

[0379] Scenario 2: Two Trps can be co-scheduled to schedule PDSCH.

[0380] Alternatively, in scenario 1: two TRPs independently schedule PDSCH. FIG5B is a schematic diagram of the structure corresponding to scenario 1 according to an embodiment of the present disclosure. In this case, the delay requirement can only be defined separately for each TRP. The delay requirement for each TRP is:

[0381] n+THARQ++TOk*(t first-SSB+TSSB-proc) / NR time slot lengths.

[0382] If two Trps schedule two PDSCHs after T3, the UE can receive two PDSCHs according to the new TCI state pair.

[0383] However, if two TRPs schedule two PDSCHs during T2-T3, the UE cannot receive the two PDSCHs through the new TCI pair because TRP2 does not complete TCI activation. The UE behavior during T2-T3 will be defined.

[0384] There are two options for UE behavior:

[0385] Option 1: If the PDSCHs of two Trps are overlapped and scheduled, the UE may receive two PDSCHs with the old TCI state pair (TCI0 and TCI1).

[0386] For this option, after T3, the UE may still apply the old TCI state pair or the new TCI state pair.

[0387] Option 2: If the PDSCHs of the two TRPs are scheduled non-overlappingly, the UE can receive PDSCHs from TRP1 and TRP2 in a TDM manner. The UE will receive PDSCHs from TRP1 with the new TCI state 2 and from TRP2 with the old TCI state 1.

[0388] Optionally, when it is scenario 2: two Trps can jointly schedule PDSCH, and Figure 5C is a structural diagram corresponding to scenario 2 shown according to an embodiment of the present disclosure.

[0389] If Trp can cooperate, the total delay for the UE to receive two PDSCHs will be the maximum delay between two TCI activations:

[0390] The TCI activation delay of TRP1 (Tdelay_TRP1) is:

[0391] The TCI activation delay for TRP2 (Tdelay_TRP2) is:

[0392] n1 and n2 are the first time slots for TRP1 and TRP2 to receive MAC CE respectively.

[0393] The total delay will be:

[0394] Maximum (Tdelay_TRP1, Tdelay_TRP2)

[0395] If two Trps schedule two PDSCHs after T3, the UE can receive two PDSCHs according to the new TCI state pair.

[0396] However, if two TRPs schedule two PDSCHs during T2-T3, the UE cannot receive the two PDSCHs through the new TCI pair because TRP2 does not complete TCI activation. The UE behavior during T2-T3 will also be defined.

[0397] There are two options for UE behavior:

[0398] Option 1: If PDSCHs of two Trps are overlapped and scheduled, the UE can receive two PDSCHs with the old TCI state pair (TCI0 and TCI1)

[0399] Option 2: If the PDSCHs of the two TRPs are scheduled non-overlappingly, the UE can receive PDSCHs from TRP1 and TRP2 in a TDM manner. The UE will receive PDSCHs from TRP1 with the new TCI state 2 and from TRP2 with the old TCI state 1.

[0400] 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.

[0401] 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.

[0402] 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.

[0403] FIG6A is a schematic diagram of the structure of the TRP proposed in an embodiment of the present disclosure. As shown in FIG6A , it includes:

[0404] A processing module, configured to, in an MDCI transmission scenario of an MTRP, send a first signaling to a terminal, the TRP determining a first time; wherein the first signaling is used by the TRP to activate a transmission configuration indication TCI state, and the first time is used to indicate: a time at which activation of a TCI state to be activated by at least one TRP in the MTRP is completed;

[0405] A sending module is used for the TRP to send the first channel to the terminal based on the first moment.

[0406] Optionally, the processing module is used to execute the steps related to "processing" performed by the TRP in any of the above methods, and the sending module is used to execute the steps related to "sending" performed by the TRP in any of the above methods. Optionally, the TRP may also include a receiving module, and the receiving module is used to execute the steps related to receiving performed by the TRP in any of the above methods, which will not be repeated here.

[0407] FIG6B is a schematic diagram of the structure of the terminal proposed in an embodiment of the present disclosure. As shown in FIG6B , it includes:

[0408] A processing module, configured to determine a first time upon receiving a first signaling sent by at least one TRP in an MDCI transmission scenario of an MTRP, wherein the first signaling is used by the TRP to activate a transmission configuration indication TCI state, and the first time is used to indicate: a time when activation of the TCI state to be activated by at least one TRP in the MTRP is completed;

[0409] A receiving module is used to receive the first channel sent by the TRP based on the first moment.

[0410] Optionally, the processing module is configured to execute the steps related to "processing" performed by the terminal in any of the above methods, and the receiving module is configured to execute the steps related to receiving performed by the terminal in any of the above methods. The terminal may further include a sending module, wherein the sending module is configured to execute the steps related to "sending" performed by the terminal in any of the above methods.

[0411] 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 network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement 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.

[0412] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as 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 processor 7101 is used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0413] 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.

[0414] 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 communication steps such as sending and receiving in the above method are performed by the transceiver 7103, and the other steps are performed by the processor 7101.

[0415] In some embodiments, a transceiver may include a receiver and a transmitter, which 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.

[0416] Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuits 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 circuits 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0417] The communication device 7100 described in the above embodiment may be a network device or a terminal, 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.

[0418] 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.

[0419] The chip 7200 includes one or more processors 7201 , and the processor 7201 is used to call instructions so that the chip 7200 executes any of the above methods.

[0420] In some embodiments, chip 7200 further includes one or more interface circuits 7202, which are connected to memory 7203. Interface circuit 7202 can be used to receive signals from memory 7203 or other devices, and can be used to send signals to memory 7203 or other devices. For example, interface circuit 7202 can read instructions stored in memory 7203 and send the instructions to processor 7201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0421] 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.

[0422] 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.

[0423] 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.

[0424] 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.

[0425] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0426] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0427] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0428] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method comprises at least one of the following: In a multi-downlink control information MDCI transmission scenario of a multi-transmission receiving point MTRP, when a TRP sends a first signaling to a terminal, the TRP determines a first moment; wherein the first signaling is used by the TRP to instruct the terminal to activate a transmission configuration indication TCI state state, and the first moment is used to indicate: the activation completion moment of the TCI state to be activated by at least one TRP in the MTRP; The TRP sends a first channel to the terminal based on the first moment.

2. The method according to claim 1, characterized in that The first signaling is used by the TRP to instruct the terminal to activate a TCI state in the TCI state set corresponding to the TRP; wherein different TRPs correspond to TCI state sets respectively, and the TCI state set includes at least one TCI state; The method further comprises: Configure the TCI state set corresponding to the TRP for the terminal.

3. The method according to claim 1 or 2, characterized in that The determining of the first moment comprises: Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different; Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: the activation completion time of the TCI state to be activated by the TRP, and the second time corresponding to different TRPs is the same or different; The second moment corresponding to the TRP is determined as the first moment corresponding to the TRP, wherein the first moments corresponding to different TRPs are the same or different.

4. The method according to claim 3, characterized in that There is no communication interaction between different TRPs in the MTRP, or there is communication interaction between different TRPs in the MTRP.

5. The method according to any one of claims 2 to 4, characterized in that: The sending the first channel to the terminal based on the first time comprises at least one of the following: After the TRP sends the first signaling to the terminal, before the first moment corresponding to the TRP, a first channel is sent to the terminal based on a first TCI state corresponding to the TRP; wherein the first TCI state is: before the TRP sends the first signaling to the terminal, the TCI state used when the first channel is sent and / or received between the TRP and the terminal; After the first moment corresponding to the TRP, a first channel is sent to the terminal based on the first TCI state corresponding to the TRP, or a first channel is sent to the terminal based on the second TCI state corresponding to the TRP; wherein the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP.

6. The method according to claim 1 or 2, characterized in that: The determining of the first moment comprises: Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different; Determine a second time corresponding to the TRP based on the first time slot corresponding to the TRP, where the second time is used to indicate: the activation completion time of the TCI state to be activated by the TRP, and the second time corresponding to different TRPs is the same or different; There is communication interaction between different TRPs in the MTRP, and the second time corresponding to the other TRPs is obtained from other TRPs in the MTRP except the TRP; The second moment with the largest value among all the second moments corresponding to the MTRP is determined as the first moment, wherein the first moments corresponding to different TRPs are the same.

7. The method according to claim 6, characterized in that The sending the first channel to the terminal based on the first time comprises at least one of the following: After the TRP sends the first signaling to the terminal, before the first moment, a first channel is sent to the terminal based on a first TCI state corresponding to the TRP, or a first channel is sent to the terminal based on a second TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP; After the first moment, a first channel is sent to the terminal based on a second TCI state corresponding to the TRP.

8. A communication method, characterized in that: The method comprises at least one of the following: In the MDCI transmission scenario of MTRP, when the terminal receives a first signaling sent by at least one TRP, the terminal determines a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate the TCI state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP; The terminal receives the first channel sent by the TRP based on the first moment.

9. The method according to claim 8, characterized in that The first signaling is used by the TRP to instruct the terminal to activate a TCI state in the TCI state set corresponding to the TRP; wherein different TRPs correspond to TCI state sets respectively, and the TCI state set includes at least one TCI state; The method further comprises: Receive a TCI state set corresponding to at least one TRP configured by the TRP.

10. The method according to claim 8 or 9, characterized in that The determining of the first moment comprises: Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different; Determine a second time corresponding to at least one TRP based on a first time slot corresponding to at least one TRP, where the second time is used to indicate: an activation completion time of a TCI state to be activated by the TRP, and the second time corresponding to different TRPs is the same or different; The second moment corresponding to the TRP is determined as the first moment corresponding to the TRP, wherein the first moments corresponding to different TRPs are the same or different.

11. The method according to claim 10, characterized in that There is no communication interaction between different TRPs in the MTRP, or there is communication interaction between different TRPs in the MTRP.

12. The method according to any one of claims 9 to 11, characterized in that: The receiving the first channel sent by the TRP based on the first moment includes at least one of the following: After the terminal receives the first signaling sent by the TRP and before the first moment corresponding to the TRP, the terminal receives the first channel sent by the TRP based on the first TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; After the first moment corresponding to the TRP, the first channel sent by the TRP is received based on the first TCI state corresponding to the TRP, or the first channel sent by the TRP is received based on the second TCI state corresponding to the TRP; wherein the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP.

13. The method according to claim 8 or 9, characterized in that The determining of the first moment comprises: Determine a first time slot corresponding to the TRP, where the first time slot is: the first time slot when the terminal receives the first signaling sent by the TRP, and the first time slots corresponding to different TRPs are the same or different; Determine a second time corresponding to at least one TRP based on a first time slot corresponding to at least one TRP, where the second time is used to indicate: an activation completion time of a TCI state to be activated by the TRP, and the second time corresponding to different TRPs is the same or different; The second moment with the largest value among all the second moments corresponding to the MTRP is determined as the first moment, wherein the first moments corresponding to different TRPs are the same.

14. The method according to claim 13, characterized in that The receiving the first channel sent by the TRP based on the first moment includes at least one of the following: After the terminal receives the first signaling sent by the TRP and before the first moment, the terminal receives the first channel sent by the TRP based on the first TCI state corresponding to the TRP, or receives the first channel sent by the TRP based on the second TCI state corresponding to the TRP; wherein the first TCI state is: the TCI state used when the first channel is sent and / or received between the TRP and the terminal before the TRP sends the first signaling to the terminal; the second TCI state is: the TCI state to be activated by the first signaling sent by the TRP; After the first moment, the first channel sent by the TRP is received based on the second TCI state corresponding to the TRP.

15. A communication method, characterized in that: Used in a communication system, the communication system comprising a TRP and a terminal, the method comprising at least one of the following: In the MDCI transmission scenario of MTRP, when the TRP sends a first signaling to the terminal, the TRP determines a first time; wherein the first signaling is used by the TRP to instruct the terminal to activate the TCI state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP; The TRP sends a first channel to the terminal based on the first time; In the MDCI transmission scenario of MTRP, when the terminal receives a first signaling sent by at least one TRP, the terminal determines a first time; The terminal receives the first channel sent by the TRP based on the first moment.

16. A TRP comprising at least one of the following: A processing module, used in the MDCI transmission scenario of MTRP, when sending a first signaling to a terminal, the TRP determines a first moment; wherein, The first signaling is used by the TRP to instruct the terminal to activate the transmission configuration indication TCI state state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP; A sending module is used for the TRP to send a first channel to the terminal based on the first moment.

17. A terminal comprising at least one of the following: A processing module, used in an MDCI transmission scenario of MTRP, determines a first time when receiving a first signaling sent by at least one TRP; wherein, The first signaling is used by the TRP to instruct the terminal to activate the transmission configuration indication TCI state state, and the first time is used to indicate: the activation completion time of the TCI state to be activated by at least one TRP in the MTRP; A receiving module is used to receive the first channel sent by the TRP based on the first moment.

18. A communication device, characterized in that: include: one or more processors; The one or more processors are used to call instructions so that the communication device executes the communication method according to any one of claims 1-7 and 8-14.

19. A communication system, characterized in that: It includes a TRP and a terminal, wherein the TRP is configured to implement the communication method described in any one of claims 1-7, and the terminal is configured to implement the communication method described in any one of claims 8-14.

20. 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 to 7 and 8 to 14.

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