An information determination method, apparatus, device, and storage medium

Abstract

The present disclosure provides an information determination method / apparatus / device and a storage medium, the method comprising: determining a transmission configuration indication state (TCI state) used for uplink channel transmission and / or uplink signal transmission. The present disclosure provides a method for a terminal device to determine which TCI state is used for uplink channel transmission and / or uplink signal transmission, thereby improving the transmission performance based on Multi-TRP coherent joint transmission.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to information determination methods / apparatus / devices and storage media. Background Technology

[0002] In Multiple-Input Multiple-Output (MIMO) systems, coherent joint transmission (CJT) is implemented using multiple transmission reception points (TRPs) with ideal backhaul connectivity. Furthermore, the Unified Transmission Configuration Indicator (UCI) state now considers the case of Single-TRPs (S-TRPs). Specifically, the unified TCI state indicates the same TCI state for multiple channels / signals of a single TRP. This same TCI state can currently be indicated separately for uplink and downlink (DL (downlink) TCI state and / or UL (uplink) TCI state respectively), or jointly for uplink and downlink (joint) TCI state. Terminal devices can use the indicated joint TCI state for uplink channel and / or uplink signal transmission.

[0003] In related technologies, MIMO currently supports a maximum of 4 TRPs for CJT, meaning the network device will indicate 3 or 4 TCI states to the terminal device. However, the current discussion only addresses the method for the terminal device to determine which TCI state to use for uplink channel and / or uplink signal transmission when the network device indicates 1 or 2 TCI states. Therefore, the methods in related technologies cannot be applied to the determination process of the terminal device using which specific TCI state for uplink channel and / or uplink signal transmission when the network device indicates 3 or 4 TCI states. Summary of the Invention

[0004] The information determination method / apparatus / device and storage medium disclosed herein are used for a terminal device to determine which TCI state to use for uplink channel and / or uplink signal transmission when the network device indicates 3 or 4 TCI states.

[0005] In a first aspect, embodiments of this disclosure provide an information determination method, which is executed by a terminal device, including:

[0006] Determine the Transmission Configuration Indication (TCI) state used for uplink channel transmission and / or uplink signal transmission.

[0007] In this disclosure, the terminal device determines the TCI state used for uplink channel transmission and / or uplink signal transmission. The method for determining this information can be applied to a MIMO system supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0008] Secondly, embodiments of this disclosure provide an information determination method, which is executed by a network device, including:

[0009] Send a first indication message, which is used to indicate at least one joint TCI state.

[0010] Thirdly, embodiments of this disclosure provide a communication device configured in a terminal device, comprising:

[0011] The processing module is used to determine the TCI state for uplink channel transmission and / or uplink signal transmission.

[0012] Fourthly, embodiments of this disclosure provide a communication device configured in a network device, comprising:

[0013] The transceiver module is used to send first indication information, which is used to indicate at least one jointTCI state.

[0014] Fifthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

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

[0016] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first aspect above.

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

[0018] Ninthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the first aspect above.

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

[0020] Eleventhly, embodiments of this disclosure provide a communication system, which includes the communication devices described in the third aspect to the fourth aspect, or the communication devices described in the fifth aspect to the sixth aspect, or the communication devices described in the seventh aspect to the eighth aspect, or the communication devices described in the ninth aspect to the tenth aspect.

[0021] In a twelfth aspect, embodiments of this disclosure provide a computer-readable storage medium for storing instructions for use by the network device described above, which, when executed, cause the terminal device to perform the method described in any one of the first to second aspects.

[0022] In a thirteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the methods described in any one of the first to second aspects.

[0023] In a fourteenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting network devices in implementing the functions involved in the methods described in any one of the first to second aspects, such as determining or processing at least one of the data and information involved in the aforementioned methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for source and slave nodes. The chip system may be composed of chips or may include chips and other discrete devices.

[0024] In a fifteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the methods described in any one of the first to second aspects. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure;

[0027] Figure 2 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0028] Figure 3 A flowchart illustrating an information determination method provided in yet another embodiment of this disclosure;

[0029] Figure 4 A flowchart illustrating an information determination method provided in yet another embodiment of this disclosure;

[0030] Figure 5 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0031] Figure 6 A flowchart illustrating an information determination method provided in yet another embodiment of this disclosure;

[0032] Figure 7 A flowchart illustrating an information determination method provided in yet another embodiment of this disclosure;

[0033] Figure 8 This is a schematic flowchart illustrating an information determination method provided in one embodiment of the present disclosure;

[0034] Figure 9 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0035] Figure 10A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0036] Figure 11 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0037] Figure 12 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0038] Figure 13a A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0039] Figure 13b A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0040] Figure 14 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0041] Figure 15 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0042] Figure 16 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0043] Figure 17 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0044] Figure 18 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0045] Figure 19 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0046] Figure 20 A flowchart illustrating an information determination method provided in another embodiment of this disclosure;

[0047] Figure 21 This is a schematic diagram of the structure of a communication device provided in another embodiment of the present disclosure;

[0048] Figure 22 This is a schematic diagram of the structure of a communication device provided in another embodiment of the present disclosure;

[0049] Figure 23 This is a block diagram of a communication device provided in one embodiment of the present disclosure;

[0050] Figure 24This is a schematic diagram of the structure of a chip provided in one embodiment of the present disclosure. Detailed Implementation

[0051] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this disclosure as detailed in the appended claims.

[0052] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0053] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the words “if” and “suppose” as used herein may be interpreted as “when”, “when”, or “in response to a determination”.

[0054] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0055] To facilitate understanding, the terminology used in this application will be introduced first.

[0056] 1. Unified Transmission Configuration Indicator State (unified TCI state)

[0057] A unified TCI state includes a joint TCI state and / or a separate TCI state. A joint TCI state specifically indicates that a particular TCI state is used for both uplink transmission and downlink reception. A separate TCI state specifically indicates that a particular TCI state is used for either uplink transmission or downlink reception. Separate TCI states include DL TCI states and UL TCI states, where the DL TCI state is used for downlink reception and the UL TCI state is used for uplink transmission.

[0058] 2. Physical uplink control channel (PUCCH)

[0059] The PUCCH is used to carry uplink control information, mainly including scheduling requests, HARQ ACK / NACK, and CSI (including CQI, PMI, LI, and RI).

[0060] 3. Physical uplink shared channel (PUSCH)

[0061] Used to carry upstream data.

[0062] To better understand the information determination method disclosed in this embodiment, the communication system to which this embodiment applies is first described below.

[0063] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure. The communication system may include, but is not limited to, a network device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown is an example including a network device 11 and a terminal device 12.

[0064] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems.

[0065] The network device 11 in this disclosure is a network-side entity used for transmitting or receiving signals. For example, the network device 11 can be an evolved NodeB (eNB), a transmission reception point (TRP), a radio remote head (RRH), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network device. The network device provided in this disclosure can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure allows the protocol layer of a network device, such as a base station, to be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0066] The terminal device 12 in this disclosure is a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal device can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. The embodiments of this disclosure do not limit the specific technology or device form used in the terminal device.

[0067] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0068] The information determination method / apparatus / device and storage medium provided in the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0069] Figure 2 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 2 As shown, the method for determining this information may include the following steps:

[0070] Step 201: Determine the TCI state used for uplink channel transmission and / or uplink signal transmission.

[0071] The method disclosed herein is applied to a MIMO system of CJT that can support up to 4 TRP / RRH.

[0072] It should be noted that the CJT transmission in this disclosure can be considered as a transmission that includes at least one of the following characteristics:

[0073] Feature 1: The base station (i.e., the network equipment mentioned in this disclosure) configures multiple (e.g., 1-4) non-zero-power channel state information reference signals (NZP CSI-RS) resources for the terminal equipment as channel measurement resources (CMR). Furthermore, the terminal equipment independently feeds back SD basis vector information for each NZP CSI-RS resource. For example, it selects a specified number L beams from the total number of antenna ports N1*N2 of each NZP CSI-RS resource (where N1 is the number of antenna ports in the first dimension and N2 is the number of antenna ports in the second dimension) to feed back the spatial domain basis vector. The value of L can be the same or different for different NZP CSI-RS resources.

[0074] Feature 2: The terminal device independently feeds back FD basis vector information for each NZP CSI-RS. For example, it selects M frequency domain basis vectors from N3 frequency domain basis vectors for each NZP CSI-RS resource. Here, N3 is the product of the number of Channel Quality Indication subbands (CQI-subbands) and the number of Precoding Matrix Index subbands (PMI-subbands) contained in each CQI-subband (i.e., number of PMI-subbands per CQI-subband). The value of M can be the same or different for different NZP CSI-RS resources.

[0075] Feature 3: The terminal feeds back frequency domain basis vector information for each CMR, that is, for different NZP CSI-RS resources, it selects M identical frequency domain basis vectors from N3 frequency domain basis vectors.

[0076] Feature 4: Includes multiple TRPs, each TRP corresponding to one NZP CSI-RS resource.

[0077] Feature 5: The number of transmitted TCI states is greater than or equal to 1.

[0078] Furthermore, in one embodiment of this disclosure, the aforementioned uplink channel may include PUSCH and / or PUCCH. The uplink signal may include SRS and / or Demodulation Reference Signal (DMRS).

[0079] The PUSCH may include at least one of the following:

[0080] Configure a PUSCH with a Type 1 configured grant (CG Type 1); that is, all transmission resources and parameters of the PUSCH are determined by Radio Resource Control (RRC).

[0081] CG Type 2 PUSCH; that is, part of the transmission resources and parameters of PUSCH are determined by RRC, and another part is indicated by Downlink Control Information (DCI);

[0082] PUSCH is scheduled by DCI format 0_0; that is, the transmission resources and parameters of PUSCH are scheduled by DCI format 0_0.

[0083] PUSCH scheduled by DCI format 0_1; that is, the transmission resources and parameters of PUSCH are scheduled by DCI format 0_1.

[0084] PUSCH is scheduled by DCI format 0_2; that is, the transmission resources and parameters of PUSCH are scheduled by DCI format 0_2.

[0085] Furthermore, in one embodiment of this disclosure, when determining the TCI state for uplink channel and / or uplink signal transmission, the terminal device may do so based on at least one of default rules, signaling sent by the network device, and DCI for scheduling the uplink channel and / or uplink signals. A detailed description of this aspect will be provided in subsequent embodiments.

[0086] Furthermore, in one embodiment of this disclosure, the TCI state may include a path loss reference signal and / or uplink power control information, wherein the path loss reference signal identifier is used to indicate the path loss reference signal, and the uplink power control identifier is used to indicate the uplink power control information. Based on this, once a TCI state for uplink channel transmission and / or uplink signal transmission is determined, uplink transmission can be performed using the path loss reference signal and / or uplink power control information contained in the determined TCI state.

[0087] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0088] Figure 3 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 3 As shown, the method for determining this information may include the following steps:

[0089] Step 301: Receive first indication information, which is used to indicate at least one joint TCI state.

[0090] In one embodiment of this disclosure, at least one joint TCIstate indicated by the first indication information can be used for transmission of the physical downlink shared channel (PDSCH).

[0091] Furthermore, in one embodiment of this disclosure, the joint TCI state may include a quasi-co-location type (QCL Type A) and / or a QCL Type B. QCL Type A may include {average delay, delay spread, Doppler shift, Doppler spread}. QCL Type B may include {Doppler shift, Doppler spread}.

[0092] In another embodiment of this disclosure, the joint TCI state may include a quasi-co-location type, which includes at least one of the following parameters:

[0093] Average latency;

[0094] Latency spread;

[0095] Doppler shift;

[0096] Doppler extension.

[0097] In another embodiment of this disclosure, the joint TCI state may further include a path loss reference signal identifier and / or an uplink power control identifier. The path loss reference signal identifier indicates a path loss reference signal, and the uplink power control identifier indicates uplink power control information.

[0098] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0099] Figure 4 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 4 As shown, the method for determining this information may include the following steps:

[0100] Step 401: Receive first indication information, which is carried in a first medium access control element (MAC CE) and is used to indicate at least one joint TCI state.

[0101] In one embodiment of this disclosure, the first MAC CE can indicate at least one joint TCI state by using an ID that indicates the joint TCI state.

[0102] Furthermore, in one embodiment of this disclosure, there is a correspondence between TCI states and codepoints, with at least one joint TCI state indicated by the first MAC CE corresponding to the same codepoint. The information field corresponding to the codepoint is carried in the first Downlink Control Information (DCI). For example, in one embodiment of this disclosure, the information field corresponding to the codepoint can be the TCI field of the first DCI or other information fields of the first DCI. The aforementioned "information field corresponding to the codepoint" can be understood as the information field used to carry the codepoint. It should be noted that in the embodiments of this disclosure, when at least one joint TCI state indicated by the first MAC CE corresponds to the same codepoint, and the information field corresponding to the codepoint is carried in the first DCI, the first DCI can be sent to the terminal device to indicate the codepoint to the terminal device, or it can be not sent to the terminal device to not indicate the codepoint to the terminal device.

[0103] For example, in one embodiment of this disclosure, it is assumed that the TCI state corresponding to codepoint "000" is a joint TCI state with ID "2" and a joint TCI state with ID "3". Then the first MAC CE can indicate that the information field corresponding to codepoint "000" of the joint TCI state with ID "2" and the joint TCI state with ID "3" is the TCI field of the first DCI.

[0104] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0105] Figure 5 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 5 As shown, the method for determining this information may include the following steps:

[0106] Step 501: Receive the second MAC CE and the second DCI.

[0107] In one embodiment of this disclosure, the second MAC CE carries the aforementioned first indication information. The second MAC CE can be used to indicate at least one joint TCI state corresponding to multiple codepoints (that is, at least one joint TCI state indicated by the second MAC CE corresponds to at least one codepoint). The second DCI can be used to indicate one of the multiple codepoints. The second DCI can use the TCI field to indicate the one codepoint.

[0108] In one embodiment of this disclosure, the second MAC CE can indicate at least one joint TCI state by using an ID that indicates the joint TCI state.

[0109] For example, in one embodiment of this disclosure, it is assumed that the TCI state corresponding to codepoint "000" is a joint TCI state with ID "2" and a joint TCI state with ID "3", and the TCI state corresponding to codepoint "001" is a joint TCI state with ID "4". Then the second MAC CE can indicate the joint TCI state with ID "2" and ID "3" corresponding to codepoint "000", the joint TCI state with ID "4" corresponding to codepoint "001", and the TCI field of the second DCI can indicate codepoint "000" or codepoint "001".

[0110] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0111] Figure 6 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 6 As shown, the method for determining this information may include the following steps:

[0112] Step 601: Receive second indication information, which is used to indicate the transmission method of PDSCH.

[0113] In one embodiment of this disclosure, the transmission method of the PDSCH indicated by the second indication information can be CJT.

[0114] Furthermore, in one embodiment of this disclosure, receiving the second instruction information may include:

[0115] Receive the second indication information carried in the RRC, which is used to configure the transmission method of PDSCH.

[0116] In another embodiment of this disclosure, receiving the second instruction information may include:

[0117] At least one of an RRC and a third MAC CE is received. The RRC carries the aforementioned second indication information and is used to configure the PDSCH transmission method. The third MAC CE can be used to indicate the joint TCI state corresponding to the PDSCH. Alternatively, in another embodiment of this disclosure, the third MAC CE can be used to indicate at least one joint TCI state, where the at least one joint TCI state indicated by the third MAC CE corresponds to the same codepoint, and the information field corresponding to the codepoint is included in the third DCI. When the third MAC CE is used to indicate at least one joint TCI state, the structure of the third MAC CE is similar to the structure of the first MAC CE described above, and the structural principle of the third DCI is similar to the structural principle of the first DCI described above, as detailed above.

[0118] It should be noted that, in one embodiment of this disclosure, the joint TCI state corresponding to the PDSCH mentioned above can be specifically understood as: the joint TCI state used for PDSCH transmission. Furthermore, the number of joint TCI states corresponding to the PDSCH can be greater than, equal to, or less than the number of at least one joint TCI state indicated by the first indication information.

[0119] In yet another embodiment of this disclosure, the aforementioned receipt of the second instruction information may include:

[0120] Receive RRC and / or fourth DCI.

[0121] In one embodiment of this disclosure, the RRC carries the aforementioned second indication information, and the RRC is used to configure the transmission method of PDSCH.

[0122] Furthermore, in one embodiment of this disclosure, the fourth DCI can be used to indicate the joint TCI state corresponding to the PDSCH. Alternatively, in one embodiment of this disclosure, the fourth DCI can be used to indicate a codepoint, wherein the codepoint corresponds to at least one joint TCI state among the joint TCI states indicated by the first indication information. The fourth DCI can utilize a TCI field or other information fields to indicate the codepoint.

[0123] For example, suppose the first instruction information indicates a joint TCI state with ID "2" and a joint TCI state with ID "3", where the joint TCI state with ID "2" and the joint TCI state with ID "3" correspond to codepoint "000", then the fourth DCI can use the TCI field to indicate codepoint "000". Alternatively, suppose the first instruction information indicates a joint TCI state with ID "2" and a joint TCI state with ID "3", where the joint TCI state with ID "2" corresponds to codepoint "00", the joint TCI state with ID "3" corresponds to codepoint "01", and the joint TCI state with ID "2" and the joint TCI state with ID "3" corresponds to codepoint "10", then the fourth DCI can use other information fields to indicate codepoint "00", "01", or "10". Alternatively, suppose the first instruction information indicates a joint TCI state with ID "2", a joint TCI state with ID "3", and a joint TCI state with ID "4", where the joint TCI state with ID "2" and the joint TCI state with ID "3" correspond to codepoint "00", and the joint TCI state with ID "4" corresponds to codepoint "01". Then the fourth DCI can use other information fields to indicate codepoint "00" or codepoint "01".

[0124] Alternatively, in one embodiment of this disclosure, the fourth DCI may indicate one or more TCI states among at least one joint TCI state indicated by the first indication information. Specifically, each joint TCI state indicated by the first indication information may correspond to 1 bit of the aforementioned fourth DCI information field. If the bit is a predetermined value (such as '1'), it indicates that the joint TCI state corresponding to that bit is used; otherwise, it indicates that the joint TCI state corresponding to that bit is not used.

[0125] For example, suppose the first indication information indicates a joint TCI state with ID "1", a joint TCI state with ID "2", a joint TCI state with ID "3", and a joint TCI state with ID "4". The joint TCI state with ID "1" corresponds to the first bit of the other information field of the fourth DCI, the joint TCI state with ID "2" corresponds to the second bit of the other information field, the joint TCI state with ID "3" corresponds to the third bit of the other information field, and the joint TCI state with ID "4" corresponds to the fourth bit of the other information field. In this case, if the other information field of the fourth DCI is 0001, it indicates the use of the joint TCI state with ID "4"; if the other information field is 0101, it indicates the use of the joint TCI states with IDs "2" and "4"; and if the other information field is 1111, it indicates the use of the joint TCI states with IDs "1", "2", "3", and "4".

[0126] In yet another embodiment of this disclosure, the aforementioned receipt of the second instruction information may include:

[0127] Receive at least one of RRC, fourth MAC CE and fifth DCI.

[0128] In one embodiment of this disclosure, the RRC carries the aforementioned second indication information, and the RRC is used to configure the transmission method of PDSCH.

[0129] Furthermore, in one embodiment of this disclosure, the fourth MAC CE can be used to indicate at least one first value, which indicates: the candidate joint TCI state corresponding to PDSCH; the fifth DCI is used to indicate a codepoint, which corresponds to a first value. Optionally, the first value corresponding to the codepoint can specifically be: the actual joint TCI state corresponding to PDSCH.

[0130] As can be seen from the above, there is a correspondence between the codepoint and the first numerical value. Furthermore, as can be seen from the foregoing, there is also a correspondence between the codepoint and the TCI state. Therefore, to distinguish between these two types of codepoints, in one embodiment of this disclosure, the codepoint corresponding to the first numerical value and the codepoint corresponding to the TCI state are indicated by different fields of the DCI (such as the first to fifth DCIs mentioned above). For example, the codepoint corresponding to the TCI state is indicated by the TCI field of the DCI, and the codepoint corresponding to the first numerical value is indicated by fields other than the TCI field of the DCI. Based on this, after receiving the DCI, the terminal device can determine that the codepoint carried by the TCI field of the DCI corresponds to the TCI state, and that the codepoint carried by fields other than the TCI field of the DCI corresponds to the first numerical value.

[0131] For example, suppose the codepoint corresponding to the first value is indicated by the first field of the DCI (excluding the TCI field), and the actual joint TCI state corresponding to PDSCH is at least one of the joint TCI states indicated in the first indication information. The first indication information indicates joint TCI state combination 1, joint TCI state combination 2, joint TCI state combination 3, ... , where joint TCI state combination 1 corresponds to codepoint "00", combination 2 corresponds to codepoint "01", combination 3 corresponds to codepoint "10", ... and the actual joint TCI state corresponding to PDSCH is combination 2. Then the fourth MAC CE can indicate combinations 2, 3, and 4, and the first field of the fifth DCI can indicate codepoint "01".

[0132] Furthermore, in another embodiment of this disclosure, the aforementioned fourth MAC CE can be used to indicate at least one joint TCI state corresponding to multiple codepoints, and the fifth DCI can be used to indicate one of the multiple codepoints. The structure of the fourth MAC CE can be similar to that of the aforementioned second MAC CE, and the structure of the fifth DCI can be similar to that of the aforementioned second DCI. For detailed descriptions, please refer to the above description.

[0133] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0134] Figure 7 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 7 As shown, the method for determining this information may include the following steps:

[0135] Step 701: Based on the default rules and / or the first signaling sent by the network device, determine the first joint TCI state among at least one joint TCI state indicated by the first indication information as the TCI state for uplink channel transmission and / or uplink signal transmission.

[0136] In one embodiment of this disclosure, the first signaling may include at least one of the following:

[0137] RRC;

[0138] MAC CE;

[0139] DCI.

[0140] Furthermore, in one embodiment of this disclosure, the aforementioned first joint TCI state may be the first joint TCI state among all joint TCI states indicated by the first indication information; in other words, the first joint TCI state may be the first indicated TCI state among all joint TCI states indicated by the first indication information.

[0141] For example, suppose the first indication information sequentially indicates the joint TCI state with ID "2", the joint TCI state with ID "3", and the joint TCI state with ID "4", where the joint TCI state with ID "2" is the first joint TCI state among all the joint TCI states indicated by the first indication information. Then the terminal device can determine the joint TCI state with ID "2" as the TCI state used for uplink channel transmission and / or uplink signal transmission.

[0142] Alternatively, in another embodiment of this disclosure, the first joint TCI state mentioned above can be the first joint TCI state containing target information among all joint TCI states indicated by the first indication information. The target information can be at least one of QCL Type A, QCL Type B, path loss reference signal, and uplink power control information.

[0143] For example, assuming the target information is QCL Type A, if the first indication information sequentially indicates a joint TCI state with ID "2", a joint TCI state with ID "3", and a joint TCI state with ID "4", where the joint TCI state with ID "2" includes QCL Type B, and the joint TCI state with ID "3" and the joint TCI state with ID "4" include QCL Type A, then the joint TCI state with ID "3" is the first joint TCI state among all the joint TCI states indicated by the first indication information that contain QCL Type A. Therefore, the terminal device can determine the joint TCI state with ID "3" as the TCI state used for uplink channel transmission and / or uplink signal transmission.

[0144] Furthermore, it should be noted that in one embodiment of this disclosure, the following can be used: Figure 7 The method of the embodiment determines the TCI state for SRS transmission, the TCI state for PUSCH transmission of CG Type 1, or the TCI state for PUCCH transmission.

[0145] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0146] Figure 8 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 8 As shown, the method for determining this information may include the following steps:

[0147] Step 801: Based on the default rules and / or the second signaling sent by the network device, determine the first joint TCI state and the second joint TCI state in at least one joint TCI state indicated by the first indication information as TCI states for uplink channel transmission and / or uplink signal transmission.

[0148] In one embodiment of this disclosure, the second signaling may include at least one of the following:

[0149] RRC;

[0150] MAC CE;

[0151] DCI.

[0152] For details regarding the first joint TCI state, please refer to the description in the above embodiments.

[0153] Furthermore, in one embodiment of this disclosure, the aforementioned second joint TCI state is the second joint TCI state among all joint TCI states indicated by the first indication information. Alternatively, in another embodiment of this disclosure, the aforementioned second joint TCI state is the second joint TCI state containing target information among all joint TCI states indicated by the first indication information. The target information can be at least one of QCL Type A, QCL Type B, path loss reference signal, and uplink power control information. The underlying principles of the second joint TCI state are similar to those of the first joint TCI state, and will not be elaborated upon here.

[0154] Furthermore, it should be noted that in one embodiment of this disclosure, the following can be used: Figure 8 The method of the embodiment determines the TCI state for PUSCH transmissions scheduled for DCI format 0_0, the TCI state for PUSCH transmissions scheduled for CG Type 1, or the TCI state for PUCCH transmissions.

[0155] Furthermore, in one embodiment of this disclosure, when determining the TCI state for a specific PUCCH or PUSCH transmission, it is also possible to employ... Figure 8 The method of the embodiment is used to determine this.

[0156] The specific PUCCH or PUSCH can be: a PUCCH or PUSCH configured for transmission methods such as Time-division multiplexing repetition (TDM repetition), single-frequency network (SFN), Space-division multiplexing repetition (SDM repetition), or Frequency-division multiplexing repetition (FDM repetition); or

[0157] The specific PUCCH or PUSCH can be a PUCCH or PUSCH configured with multiple SRS resource indicator fields, multiple SRS resource set indicator fields, multiple path loss reference signal indicator fields, multiple power parameter indicator fields, or multiple spatial filter indicator fields.

[0158] Specifically, TDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same frequency domain resources, but to different time domain resources and different TCI states; SFN can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time and frequency domain resources, the same DMRS port, but to different TCI states; SDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time and frequency domain resources, but to different DMRS port groups and different TCI states; FDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time domain resources, but to different frequency domain resources and different TCI states.

[0159] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0160] Figure 9 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 9 As shown, the method for determining this information may include the following steps:

[0161] Step 901: Based on the default rules and / or the third signaling sent by the network device, determine one or all of the first two joint TCI states indicated by the first indication information as the TCI state for uplink channel transmission and / or uplink signal transmission.

[0162] In one embodiment of this disclosure, the third signaling may include at least one of the following:

[0163] RRC;

[0164] MAC CE;

[0165] DCI.

[0166] In one embodiment of this disclosure, the first two joint TCI states are the first two joint TCI states among all joint TCI states indicated by the first indication information. Alternatively, in another embodiment of this disclosure, the first two joint TCI states are the first two joint TCI states containing target information among all joint TCI states indicated by the first indication information. The target information can be at least one of QCL Type A, QCL Type B, path loss reference signal, and uplink power control information. The underlying principles of the first two joint TCI states are similar to those of the first joint TCI state, and will not be elaborated upon here.

[0167] Furthermore, in one embodiment of this disclosure, at least one joint TCI state indicated by the first indication information and / or the first joint TCI state, or the second joint TCI state, or the first joint TCI state and the second joint TCI state can be determined as the TCI state for uplink channel transmission and / or uplink signal transmission.

[0168] Furthermore, it should be noted that in one embodiment of this disclosure, the following can be used: Figure 9The method of the embodiment determines the TCI state for PUSCH transmissions scheduled for DCI format 0_1, the TCI state for PUSCH transmissions scheduled for DCI format 0_2, the TCI state for PUSCH transmissions for CG Type 2, or the TCI state for PUCCH transmissions.

[0169] Furthermore, in one embodiment of this disclosure, when determining the TCI state for a specific PUCCH or PUSCH transmission, it is also possible to employ... Figure 9 The method of the embodiment is used to determine this.

[0170] The specific PUCCH or PUSCH can be: a PUCCH or PUSCH configured for transmission methods such as Time-division multiplexing repetition (TDM repetition), single-frequency network (SFN), Space-division multiplexing repetition (SDM repetition), or Frequency-division multiplexing repetition (FDM repetition); or

[0171] Specifically, TDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same frequency domain resources, but to different time domain resources and different TCI states; SFN can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time and frequency domain resources, the same DMRS port, but to different TCI states; SDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time and frequency domain resources, but to different DMRS port groups and different TCI states; FDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time domain resources, but to different frequency domain resources and different TCI states.

[0172] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0173] Figure 10 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 10 As shown, the method for determining this information may include the following steps:

[0174] Step 1001: Based on the default rules and / or the fourth signaling sent by the network device, determine one or more of the joint TCI states indicated by the first indication information as TCI states for uplink channel transmission and / or uplink signal transmission.

[0175] In one embodiment of this disclosure, the fourth signaling may include at least one of the following:

[0176] RRC;

[0177] MAC CE;

[0178] DCI.

[0179] Furthermore, in one embodiment of this disclosure, the plurality of TCI states may be two TCI states, three TCI states, or four TCI states.

[0180] It should be noted that the method in this embodiment is the same as that described above. Figure 9The method differs from the corresponding embodiment in that: in this embodiment, not only can one or two TCI states be selected from the first and second TCI states indicated by the first indication information for uplink channel transmission and / or uplink signal transmission, but one or two TCI states can also be arbitrarily selected from the third and fourth TCI states indicated by the first indication information for uplink channel transmission and / or uplink signal transmission; and Figure 9 The method in the corresponding embodiment can only select one or two TCI states from the first two TCI states of at least one joint TCI state indicated by the first indication information for uplink channel transmission and / or uplink signal transmission.

[0181] Furthermore, it should be noted that in one embodiment of this disclosure, the following can be used: Figure 10 The method of the embodiment determines the TCI state for PUSCH transmissions scheduled for DCI format 0_1, the TCI state for PUSCH transmissions scheduled for DCI format 0_2, the TCI state for PUSCH transmissions for CG Type 2, or the TCI state for PUCCH transmissions.

[0182] Furthermore, in one embodiment of this disclosure, when determining the TCI state for a specific PUCCH or PUSCH transmission, it is also possible to employ... Figure 10 The method of the embodiment is used to determine this.

[0183] The specific PUCCH or PUSCH can be: a PUCCH or PUSCH configured for transmission methods such as Time-division multiplexing repetition (TDM repetition), single-frequency network (SFN), Space-division multiplexing repetition (SDM repetition), or Frequency-division multiplexing repetition (FDM repetition); or

[0184] Specifically, TDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same frequency domain resources, but to different time domain resources and different TCI states; SFN can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time and frequency domain resources, the same DMRS port, but to different TCI states; SDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time and frequency domain resources, but to different DMRS port groups and different TCI states; FDM repetition can be understood as follows: two resources that are transmitted repeatedly can correspond to the same time domain resources, but to different frequency domain resources and different TCI states.

[0185] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0186] Figure 11 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 11 As shown, the method for determining this information may include the following steps:

[0187] Step 1101: Determine the TCI state for uplink channel transmission and / or uplink signal transmission based on the TCI state of the control resource set (CORESET) corresponding to the DCI that schedules the uplink channel and / or uplink signal.

[0188] In one embodiment of this disclosure, the method for determining the TCI state for uplink channel transmission and / or uplink signal transmission based on the CORESET TCI state corresponding to the DCI of the scheduling uplink channel and / or uplink signal may include:

[0189] If the CORESET corresponding to the DCI that schedules the uplink channel and / or uplink signal corresponds to only one TCI state, then that one TCI state is directly determined as the TCI state used for uplink channel transmission and / or uplink signal transmission; if the CORESET corresponding to the DCI that schedules the uplink channel and / or uplink signal corresponds to multiple TCI states, then one or more or all of those multiple TCI states are determined as the TCI state used for uplink channel transmission and / or uplink signal transmission.

[0190] Furthermore, in one embodiment of this disclosure, Figure 11 The method of the embodiment can be applied to determine the TCI state used for transmission of uplink channels and / or uplink signals scheduled using DCI. However, it should be noted that for PUSCHs scheduled with DCI format 0_0, since DCI format 0_0 is a fallback DCI, it contains fewer indication fields. Therefore, DCI format 0_0 for scheduling PUSCHs does not have enough indication fields to indicate the TCI state. Thus, when indicating the TCI state used for transmission of PUSCHs scheduled with DCI format 0_0, it is usually necessary to use other DCI indications, MAC CE or RRC indications, or default rules or the TCI state based on the CORESET corresponding to DCI format 0_0.

[0191] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0192] Figure 12 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a terminal device, such as... Figure 12 As shown, the method for determining this information may include the following steps:

[0193] Step 1201: Determine the TCI state for uplink channel transmission and the TCI state for uplink signal transmission respectively.

[0194] Specifically, in one embodiment of this disclosure, the TCI state for uplink channel transmission and the TCI state for uplink signal transmission can be determined separately.

[0195] For example, based on a first signaling sent by the network device, the first joint TCI state among at least one joint TCI state indicated by the first indication information can be determined as the TCI state for uplink channel transmission, and based on a third signaling sent by the network device, the second joint TCI state among the first two joint TCI states indicated by the first indication information can be determined as the TCI state for uplink signal transmission.

[0196] In summary, the information determination method provided in this disclosure involves the terminal device determining the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0197] It should be noted that, in this disclosure, any two or more of the first MAC CE, second MAC CE, third MAC CE, and fourth MAC CE, which serve as the first signaling MAC CE, second signaling MAC CE, third signaling MAC CE, and fourth signaling MAC CE, can be different or the same. Similarly, any two or more of the first DCI, second DCI, third DCI, fourth DCI, and fifth DCI, which serve as the first signaling DCI, second signaling DCI, third signaling DCI, and fourth signaling DCI, can be different or the same. Furthermore, any two or more of the RRC carrying configuration information, which serve as the first signaling RRC, second signaling RRC, third signaling RRC, and fourth signaling RRC, can be different or the same.

[0198] Figure 13a This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 13a As shown, the method for determining this information may include the following steps:

[0199] Step 1301a: Send first indication information, which is used to indicate at least one joint TCI state.

[0200] For a detailed description of step 1301a, please refer to the above embodiment.

[0201] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0202] Figure 13bThis is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 13b As shown, the method for determining this information may include the following steps:

[0203] Step 1301b: Send second indication information, which is used to indicate the transmission method of PDSCH.

[0204] For a detailed description of step 1301b, please refer to the above embodiment.

[0205] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0206] Figure 14 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 14 As shown, the method for determining this information may include the following steps:

[0207] Step 1401: Send first indication information, which is carried in a first MAC CE, and the first MAC CE is used to indicate at least one joint TCI state.

[0208] For a detailed description of step 1401, please refer to the above embodiment.

[0209] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0210] Figure 15 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 15 As shown, the method for determining this information may include the following steps:

[0211] Step 1501: Send the second MAC CE and the second DCI.

[0212] For a detailed description of step 1501, please refer to the above embodiment.

[0213] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0214] Figure 16 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 16 As shown, the method for determining this information may include the following steps:

[0215] Step 1601: Send a first signaling to the terminal device; the first signaling is used to indicate that the first joint TCI state in at least one joint TCI state indicated by the first indication information is determined as the TCI state for uplink channel transmission and / or uplink signal transmission.

[0216] For a detailed description of step 1601, please refer to the above embodiment.

[0217] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0218] Figure 17 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 17 As shown, the method for determining this information may include the following steps:

[0219] Step 1701: Send a second signaling to the terminal device; the second signaling is used to indicate that the first joint TCI state and the second joint TCI state in at least one joint TCI state indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

[0220] For a detailed description of step 1701, please refer to the above embodiment.

[0221] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0222] Figure 18 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 18 As shown, the method for determining this information may include the following steps:

[0223] Step 1801: Send a third signaling to the terminal device; the third signaling is used to indicate that one or all of the first two joint TCI states indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

[0224] For a detailed description of step 1801, please refer to the above embodiment.

[0225] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0226] Figure 19 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 19 As shown, the method for determining this information may include the following steps:

[0227] Step 1901: Send a fourth signaling message to the terminal device; the fourth signaling message is used to indicate that one or more of the joint TCI states indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

[0228] For a detailed description of step 1901, please refer to the above embodiment.

[0229] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0230] Figure 20 This is a flowchart illustrating an information determination method provided in an embodiment of the present disclosure. The method is executed by a network device, such as... Figure 20 As shown, the method for determining this information may include the following steps:

[0231] Step 2001: Indicate the TCI state for uplink channel transmission and the TCI state for uplink signal transmission to the terminal device respectively.

[0232] For a detailed description of step 2001, please refer to the above embodiment.

[0233] In summary, the information determination method provided in this disclosure involves a network device sending first indication information to a terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. This information determination method can be applied to MIMO systems supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is primarily used for scenarios with three or four TRP / RRH CJTs, but it is also applicable to two TRP / RRH CJTs. In other words, this disclosure provides a method for a terminal device to determine which TCI state to use for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance of Multi-TRP coherent joint transmission.

[0234] Figure 21This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure, as shown below. Figure 21 As shown, the device may include:

[0235] The processing module is used to determine the TCI state for uplink channel transmission and / or uplink signal transmission.

[0236] In summary, in the communication apparatus provided in the embodiments of this disclosure, the terminal device determines the TCI state used for uplink channel transmission and / or uplink signal transmission. The method of this disclosure, which determines this information, can be applied to a MIMO system supporting a maximum of four TRP / RRH CJTs. Therefore, the method of this disclosure is mainly used in scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. That is, this disclosure provides a method for a terminal device to determine which TCI state is specifically used for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance based on Multi-TRP coherent joint transmission.

[0237] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0238] Receive first indication information; the first indication information is used to indicate at least one joint TCI state.

[0239] Optionally, in one embodiment of this disclosure, the first indication information is carried in a first media access control layer control unit (MAC CE); the first MAC CE is used to indicate at least one joint TCI state.

[0240] Optionally, in one embodiment of this disclosure, at least one jointTCI state indicated by the first MAC CE corresponds to the same codepoint, and the information field corresponding to the codepoint is included in the first downlink control information (DCI).

[0241] Optionally, in one embodiment of this disclosure, the first indication information is carried in a second MAC CE; wherein the second MAC CE is used to indicate at least one joint TCI state corresponding to each of the plurality of codepoints;

[0242] The device is also used for:

[0243] Receive a second DCI, which is used to indicate one of the plurality of codepoints.

[0244] Optionally, in one embodiment of this disclosure, the processing module is further configured to perform at least one of the following:

[0245] Based on the default rules and / or the first signaling sent by the network device, the first joint TCI state in at least one joint TCI state indicated by the first indication information is determined as the TCI state for uplink channel transmission and / or uplink signal transmission.

[0246] Based on the default rules and / or the second signaling sent by the network device, the first joint TCI state and the second joint TCI state in at least one joint TCI state indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

[0247] Based on default rules and / or third signaling sent by network devices, one or all of the first two joint TCI states indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

[0248] Based on default rules and / or the fourth signaling sent by the network device, one or more of the joint TCI states indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

[0249] Optionally, in one embodiment of this disclosure, the joint TCI state includes quasi-co-location types QCLType A and / or QCL Type B.

[0250] Optionally, in one embodiment of this disclosure, the joint TCI state includes a quasi-co-location type, which includes at least one of the following parameters:

[0251] Average latency;

[0252] Latency spread;

[0253] Doppler shift;

[0254] Doppler extension.

[0255] Optionally, in one embodiment of this disclosure, the first joint TCI state is the first joint TCI state among all joint TCI states indicated by the first indication information; or

[0256] The first joint TCI state is the first joint TCI state containing target information among all joint TCI states indicated by the first instruction information.

[0257] Optionally, in one embodiment of this disclosure, the second joint TCI state is the second joint TCI state among all joint TCI states indicated by the first indication information; or

[0258] The second joint TCI state is the second joint TCI state containing the target information among all joint TCI states indicated by the first instruction information.

[0259] Optionally, in one embodiment of this disclosure, the first two joint TCI states are the first two joint TCI states among all joint TCI states indicated by the first indication information; or

[0260] The first two joint TCI states are the first two joint TCI states containing target information among all joint TCI states indicated by the first instruction information.

[0261] Optionally, in one embodiment of this disclosure, the target information includes at least one of QCL Type A, QCL Type B, path loss reference signal, and uplink power control information.

[0262] Optionally, in one embodiment of this disclosure, the first signaling, the second signaling, the third signaling, or the fourth signaling includes at least one of the following:

[0263] Radio Resource Control (RRC);

[0264] MAC CE;

[0265] DCI.

[0266] Optionally, in one embodiment of this disclosure, the processing module is further configured to:

[0267] The TCI state for uplink channel transmission and / or uplink signal transmission is determined based on the TCI state of the control resource set CORESET corresponding to the DCI that schedules the uplink channel and / or uplink signal.

[0268] Optionally, in one embodiment of this disclosure, the processing module is further configured to:

[0269] The TCI state for uplink channel transmission and the TCI state for uplink signal transmission are determined respectively.

[0270] Optionally, in one embodiment of this disclosure, the uplink channel includes the Physical Uplink Shared Channel (PUSCH) and / or the Physical Uplink Control Channel (PUCCH).

[0271] The uplink signal includes a probe reference signal (SRS) and / or a demodulation reference signal (DMRS).

[0272] Optionally, in one embodiment of this disclosure, the PUSCH includes at least one of the following:

[0273] Configure a PUSCH with license type 1CG Type 1;

[0274] PUSCH of CG Type 2;

[0275] PUSCH scheduled in DCI format 0_0;

[0276] PUSCH scheduled in DCI format 0_1;

[0277] PUSCH scheduled in DCI format 0_2.

[0278] Optionally, in one embodiment of this disclosure, the TCI state includes a path loss reference signal and / or uplink power control information.

[0279] Figure 22 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure, as shown below. Figure 22 As shown, the device may include:

[0280] The transceiver module is used to send first indication information, which is used to indicate at least one jointTCI state.

[0281] In summary, in the communication apparatus provided in the embodiments of this disclosure, the network device sends first indication information to the terminal device. This first indication information indicates at least one joint TCI state. The terminal device then determines the TCI state used for uplink channel transmission and / or uplink signal transmission. The method for determining this information can be applied to a MIMO system supporting up to four TRP / RRH CJTs. Therefore, the method of this disclosure is mainly used in scenarios with three or four TRP / RRH CJTs, and is also applicable to two TRP / RRH CJTs. That is, this disclosure provides a method for a terminal device to determine which TCI state is specifically used for uplink channel transmission and / or uplink signal transmission when the network device indicates three or four TCI states, thereby improving the transmission performance based on Multi-TRP coherent joint transmission.

[0282] Optionally, in one embodiment of this disclosure, the first indication information is carried in a first MAC CE; the first MAC CE is used to indicate at least one joint TCI state.

[0283] Optionally, in one embodiment of this disclosure, at least one jointTCI state indicated by the first MAC CE corresponds to the same codepoint, and the information field corresponding to the codepoint is included in the first DCI.

[0284] Optionally, in one embodiment of this disclosure, the first indication information is carried in a second MAC CE; wherein the second MAC CE is used to indicate at least one joint TCI state corresponding to each of the plurality of codepoints;

[0285] The device is also used for:

[0286] Send a second DCI, which is used to indicate one of the plurality of codepoints.

[0287] Optionally, in one embodiment of this disclosure, the device is further used for at least one of the following:

[0288] Send a first signaling message to the terminal device; the first signaling message is used to indicate that the first joint TCI state in at least one joint TCI state indicated by the first indication information is determined as the TCI state for uplink channel transmission and / or uplink signal transmission;

[0289] Send a second signaling message to the terminal device; the second signaling message is used to indicate that the first joint TCI state and the second joint TCI state in at least one joint TCI state indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission;

[0290] Send a third signaling message to the terminal device; the third signaling message is used to indicate that: one or all of the first two joint TCI states in at least one joint TCI state indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission;

[0291] Send a fourth signaling message to the terminal device; the fourth signaling message is used to indicate that one or more of the joint TCI states indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

[0292] Optionally, in one embodiment of this disclosure, the joint TCI state includes QCL Type A and / or QCL Type B.

[0293] Optionally, in one embodiment of this disclosure, the joint TCI state includes a quasi-co-location type, which includes at least one of the following parameters:

[0294] Average latency;

[0295] Latency spread;

[0296] Doppler shift;

[0297] Doppler extension.

[0298] Optionally, in one embodiment of this disclosure, the first joint TCI state is the first joint TCI state among all joint TCI states indicated by the first indication information; or

[0299] The first joint TCI state is the first joint TCI state containing target information among all joint TCI states indicated by the first instruction information.

[0300] Optionally, in one embodiment of this disclosure, the second joint TCI state is the second joint TCI state among all joint TCI states indicated by the first indication information; or

[0301] The second joint TCI state is the second joint TCI state containing the target information among all joint TCI states indicated by the first instruction information.

[0302] Optionally, in one embodiment of this disclosure, the first two joint TCI states are the first two joint TCI states among all joint TCI states indicated by the first indication information; or

[0303] The first two joint TCI states are the first two joint TCI states containing target information among all joint TCI states indicated by the first instruction information.

[0304] Optionally, in one embodiment of this disclosure, the target information includes at least one of QCL Type A, QCL Type B, path loss reference signal, and uplink power control information.

[0305] Optionally, in one embodiment of this disclosure, the first signaling, the second signaling, the third signaling, or the fourth signaling includes at least one of the following:

[0306] RRC;

[0307] MAC CE;

[0308] DCI.

[0309] Optionally, in one embodiment of this disclosure, the network device is configured to indicate to the terminal device a TCI state for uplink channel transmission and a TCI state for uplink signal transmission, respectively.

[0310] Optionally, in one embodiment of this disclosure, the uplink channel includes PUSCH and / or PUCCH;

[0311] The uplink signal includes SRS and / or DMRS.

[0312] Optionally, in one embodiment of this disclosure, the PUSCH includes at least one of the following:

[0313] CG Type 1 PUSCH;

[0314] PUSCH of CG Type 2;

[0315] PUSCH scheduled in DCI format 0_0;

[0316] PUSCH scheduled in DCI format 0_1;

[0317] PUSCH scheduled in DCI format 0_2.

[0318] Optionally, in one embodiment of this disclosure, the TCI state includes a path loss reference signal and / or uplink power control information.

[0319] Please see Figure 23 , Figure 23 This is a schematic diagram of the structure of a communication device 2300 provided in an embodiment of this application. The communication device 2300 can be a network device, a terminal device, a chip, chip system, or processor that supports the implementation of the above methods in a network device, or a chip, chip system, or processor that supports the implementation of the above methods in a terminal device. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0320] The communication device 2300 may include one or more processors 2301. The processor 2301 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0321] Optionally, the communication device 2300 may further include one or more memories 2302, which may store a computer program 2304. The processor 2301 executes the computer program 2304 to cause the communication device 2300 to perform the method described in the above method embodiments. Optionally, the memory 2302 may also store data. The communication device 2300 and the memory 2302 may be provided separately or integrated together.

[0322] Optionally, the communication device 2300 may also include a transceiver 2305 and an antenna 2306. The transceiver 2305 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 2305 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0323] Optionally, the communication device 2300 may further include one or more interface circuits 2307. The interface circuits 2307 are used to receive code instructions and transmit them to the processor 2301. The processor 2301 executes the code instructions to cause the communication device 2300 to perform the methods described in the above method embodiments.

[0324] In one implementation, the processor 2301 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0325] In one implementation, processor 2301 may store computer program 2303, which runs on processor 2301 and enables communication device 2300 to execute the methods described in the above method embodiments. Computer program 2303 may be embedded in processor 2301; in this case, processor 2301 may be implemented in hardware.

[0326] In one implementation, the communication device 2300 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this application can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide-semiconductor (CMOS), n-metal-oxide-semiconductor (NMOS), p-type metal-oxide-semiconductor (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0327] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may vary. Figure 23 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0328] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0329] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0330] (3) ASIC, such as modem;

[0331] (4) Modules that can be embedded in other devices;

[0332] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0333] (6) Others, etc.

[0334] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 24 The diagram shows the structure of the chip. Figure 24 The chip shown includes a processor 2401 and an interface 2402. There can be one or more processors 2401, and multiple interfaces 2402.

[0335] Optionally, the chip also includes a memory 2403, which is used to store necessary computer programs and data.

[0336] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0337] This application also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0338] This application also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0339] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0340] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., involved in this application are merely for the convenience of description and are not intended to limit the scope of the embodiments of this application, nor do they indicate the order of sequence.

[0341] At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not impose any limitation. In the embodiments of this application, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order or size among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0342] The correspondences shown in the tables of this application can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this application is not limited to these values. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this application may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headings of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0343] The term "predefined" in this application can be understood as definition, pre-defined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0344] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0345] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0346] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An information determination method, characterized in that, The method, executed by a terminal device, includes: Determine the Transmission Configuration Indication (TCI) state used for uplink channel transmission and / or uplink signal transmission; The determination of the TCI state for uplink channel transmission and / or uplink signal transmission includes: The second signaling sent by the network device determines the first joint TCI state and the second joint TCI state as TCI states for uplink channel transmission and / or uplink signal transmission. The uplink channel transmission is configured with multiple SRS resource sets, and different SRS resource sets are associated with different SRS resource indication fields. The method further includes: receiving first indication information; the first indication information is used to indicate at least one joint TCI state; Wherein, the first joint TCI state is the first joint TCI state among all joint TCI states indicated by the first indication information; or the first joint TCI state is the first joint TCI state containing target information among all joint TCI states indicated by the first indication information; And / or, The second joint TCI state is the second joint TCI state among all joint TCI states indicated by the first instruction information; or the second joint TCI state is the second joint TCI state containing target information among all joint TCI states indicated by the first instruction information.

2. The method as described in claim 1, characterized in that, The first indication information is carried in the first media access control layer control unit (MAC CE); the first MAC CE is used to indicate at least one joint TCI state.

3. The method as described in claim 2, characterized in that, The first MAC CE indicates at least one jointTCI state corresponding to the same codepoint, and the information field corresponding to the codepoint is included in the first downlink control information (DCI).

4. The method as described in claim 1, characterized in that, The first indication information is carried in the second MAC CE; wherein the second MAC CE is used to indicate at least one joint TCI state corresponding to each of the multiple codepoints; The method further includes: Receive a second DCI, which is used to indicate one of the plurality of codepoints.

5. The method as described in claim 1, characterized in that, The determination of the TCI state for uplink channel transmission and / or uplink signal transmission includes at least one of the following: Based on the default rules and / or the first signaling sent by the network device, the first joint TCI state in at least one joint TCI state indicated by the first indication information is determined as the TCI state for uplink channel transmission and / or uplink signal transmission. Based on the default rules, the first joint TCI state and the second joint TCI state in at least one joint TCI state indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission. Based on default rules and / or third signaling sent by network devices, one or all of the first two joint TCI states indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission. Based on default rules and / or the fourth signaling sent by the network device, one or more of the joint TCI states indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

6. The method as described in claim 5, characterized in that, The joint TCI state includes quasi-co-location types QCLType A and / or QCL Type B.

7. The method as described in claim 5 or 6, characterized in that, The joint TCI state includes a quasi-co-location type, which includes at least one of the following parameters: Average latency; Latency spread; Doppler shift; Doppler extension.

8. The method as described in claim 5, characterized in that, The first two joint TCI states are the first two joint TCI states among all joint TCI states indicated by the first instruction message; or The first two joint TCI states are the first two joint TCI states containing target information among all joint TCI states indicated by the first instruction information.

9. The method as described in claim 1 or 8, characterized in that, The target information includes at least one of QCL Type A, QCL Type B, path loss reference signal, and uplink power control information.

10. The method as described in claim 5, characterized in that, The first signaling, second signaling, third signaling, or fourth signaling includes at least one of the following: Radio Resource Control (RRC); MAC CE; DCI.

11. The method as described in claim 1, characterized in that, The determination of the TCI state for uplink channel transmission and / or uplink signal transmission includes: The TCI state for uplink channel transmission and / or uplink signal transmission is determined based on the TCI state of the control resource set CORESET corresponding to the DCI that schedules the uplink channel and / or uplink signal.

12. The method as described in claim 1, characterized in that, The determination of the TCI state for uplink channel transmission and / or uplink signal transmission includes: The TCI state for uplink channel transmission and the TCI state for uplink signal transmission are determined respectively.

13. The method according to any one of claims 1-5, characterized in that, The uplink channel includes the Physical Uplink Shared Channel (PUSCH) and / or the Physical Uplink Control Channel (PUCCH); The uplink signal includes a probe reference signal (SRS) and / or a demodulation reference signal (DMRS).

14. The method as described in claim 13, characterized in that, The PUSCH includes at least one of the following: Configure a PUSCH with license type 1 (CG Type 1); PUSCH of CG Type 2; DCI format 0_0 schedules the PUSCH; PUSCH scheduled in DCI format 0_1; PUSCH scheduled in DCI format 0_2.

15. The method as described in claim 1, characterized in that, The TCI state includes path loss reference signal and / or uplink power control information.

16. An information determination method, characterized in that, The method, executed by a network device, includes: Send a first indication message, the first indication message being used to indicate at least one joint TCI state; The method further includes: Send a second signaling message to the terminal device; the second signaling message is used to instruct the terminal device to determine the first joint TCI state and the second joint TCI state as TCI states for uplink channel transmission and / or uplink signal transmission, wherein the uplink channel transmission is configured with multiple SRS resource sets, and different SRS resource sets are associated with different SRS resource indication fields. Wherein, the first joint TCI state is the first joint TCI state among all joint TCI states indicated by the first indication information; or the first joint TCI state is the first joint TCI state containing target information among all joint TCI states indicated by the first indication information; And / or, The second joint TCI state is the second joint TCI state among all joint TCI states indicated by the first instruction information; or the second joint TCI state is the second joint TCI state containing target information among all joint TCI states indicated by the first instruction information.

17. The method as described in claim 16, characterized in that, The first indication information is carried in the first MAC CE; the first MAC CE is used to indicate at least one joint TCI state.

18. The method as described in claim 17, characterized in that, At least one jointTCI state indicated by the first MAC CE corresponds to the same codepoint, and the information field corresponding to the codepoint is contained in the first DCI.

19. The method as described in claim 16, characterized in that, The first indication information is carried in the second MAC CE; wherein the second MAC CE is used to indicate at least one joint TCI state corresponding to each of the multiple codepoints; The method further includes: Send a second DCI, which is used to indicate one of the plurality of codepoints.

20. The method as described in claim 16, characterized in that, The method further includes at least one of the following: Send a first signaling message to the terminal device; the first signaling message is used to indicate that the first joint TCI state in at least one joint TCI state indicated by the first indication information is determined as the TCI state for uplink channel transmission and / or uplink signal transmission; Send a third signaling message to the terminal device; the third signaling message is used to indicate that: one or all of the first two joint TCI states in at least one joint TCI state indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission. Send a fourth signaling message to the terminal device; the fourth signaling message is used to indicate that one or more of the joint TCI states indicated by the first indication information are determined as TCI states for uplink channel transmission and / or uplink signal transmission.

21. The method as described in claim 20, characterized in that, The joint TCI state includes QCL Type A and / or QCL Type B.

22. The method as described in claim 20 or 21, characterized in that, The joint TCI state includes a quasi-co-location type, which includes at least one of the following parameters: Average latency; Latency spread; Doppler shift; Doppler extension.

23. The method as described in claim 20, characterized in that, The first two joint TCI states are the first two joint TCI states among all joint TCI states indicated by the first instruction message; or The first two joint TCI states are the first two joint TCI states containing target information among all joint TCI states indicated by the first instruction information.

24. The method as described in claim 16 or 23, characterized in that, The target information includes at least one of QCL Type A, QCL Type B, path loss reference signal, and uplink power control information.

25. The method as described in claim 20, characterized in that, The first signaling, second signaling, third signaling, or fourth signaling includes at least one of the following: RRC; MAC CE; DCI.

26. The method as described in claim 16, characterized in that, The network device is used to indicate to the terminal device the TCI state for uplink channel transmission and the TCI state for uplink signal transmission, respectively.

27. The method according to any one of claims 16-21, characterized in that, The uplink channel includes PUSCH and / or PUCCH; The uplink signal includes SRS and / or DMRS.

28. The method as described in claim 27, characterized in that, The PUSCH includes at least one of the following: CG Type 1 PUSCH; PUSCH of CG Type 2; PUSCH scheduled in DCI format 0_0; PUSCH scheduled in DCI format 0_1; PUSCH scheduled in DCI format 0_2.

29. The method as described in claim 16, characterized in that, The TCI state includes path loss reference signal and / or uplink power control information.

30. A communication device configured in a terminal device, comprising: The processing module is used to determine the TCI state for uplink channel transmission and / or uplink signal transmission; The processing module is also used for: The second signaling sent by the network device determines the first joint TCI state and the second joint TCI state as TCI states for uplink channel transmission and / or uplink signal transmission. The uplink channel transmission is configured with multiple SRS resource sets, and different SRS resource sets are associated with different SRS resource indication fields. The device is also used for: Receive first indication information; the first indication information is used to indicate at least one joint TCI state; Wherein, the first joint TCI state is the first joint TCI state among all joint TCI states indicated by the first indication information; or the first joint TCI state is the first joint TCI state containing target information among all joint TCI states indicated by the first indication information; And / or, The second joint TCI state is the second joint TCI state among all joint TCI states indicated by the first instruction information; or the second joint TCI state is the second joint TCI state containing target information among all joint TCI states indicated by the first instruction information.

31. A communication device configured in a network device, comprising: The transceiver module is used to send first indication information, which is used to indicate at least one joint TCI state; The device is also used for: Send a second signaling message to the terminal device; the second signaling message is used to instruct the terminal device to determine the first joint TCI state and the second joint TCI state as TCI states for uplink channel transmission and / or uplink signal transmission, wherein the uplink channel transmission is configured with multiple SRS resource sets, and different SRS resource sets are associated with different SRS resource indication fields. Wherein, the first joint TCI state is the first joint TCI state among all joint TCI states indicated by the first indication information; or the first joint TCI state is the first joint TCI state containing target information among all joint TCI states indicated by the first indication information; And / or, The second joint TCI state is the second joint TCI state among all joint TCI states indicated by the first instruction information; or the second joint TCI state is the second joint TCI state containing target information among all joint TCI states indicated by the first instruction information.

32. A communication device, characterized in that, The device includes a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 1 to 15, or the processor executes the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 16 to 29.

33. A communication device, characterized in that, include: Processor and interface circuitry, among which The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to execute the code instructions to perform the method as described in any one of claims 1 to 15, or to execute the code instructions to perform the method as described in any one of claims 16 to 29.

34. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 15 to be implemented, or, when executed, cause the method of any one of claims 16 to 29 to be implemented.

Images