Method and apparatus for determining a transmission scheme

Abstract

The embodiment of the application discloses a method and device for determining a transmission scheme, the method comprising: a terminal device receiving a first message sent from a network device, and determining a data transmission scheme based on the first message, the data transmission scheme comprising a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme, thereby providing a technical scheme for determining a terminal device transmission scheme.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and particularly relates to a determination method and device of a transmission scheme. BACKGROUND

[0002] In future communication systems (such as Rel-18), support for multi-site coherent joint transmission is being considered. However, there is no clear method in the protocol for the terminal device to learn how to determine the transmission scheme. Therefore, it is urgent to determine the transmission scheme of the terminal device. SUMMARY

[0003] Embodiments of the present application provide a determination method and device of a transmission scheme, and provide a technical scheme for determining a transmission scheme of a terminal device.

[0004] In a first aspect, a determination method of a transmission scheme is provided, and the method comprises the following steps:

[0005] The terminal device receives a first message.

[0006] The terminal device determines a data transmission scheme based on the first message, and the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0007] In a second aspect, a determination method of a transmission scheme is provided, and the method comprises the following steps:

[0008] The network device sends a first message, and the first message is used to determine a data transmission scheme, and the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0009] In a third aspect, a determination device of a transmission scheme is provided, and the device comprises:

[0010] The transceiver unit is configured to receive a first message.

[0011] The processing unit is configured to determine a data transmission scheme based on the first message, and the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0012] In a fourth aspect, a determination device of a transmission scheme is provided, and the device comprises:

[0013] The transceiver unit is configured to send a first message, and the first message is used to determine a data transmission scheme, and the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0014] In a fifth aspect, an embodiment of the present application provides a chip, configured to receive a first message.

[0015] The chip is further configured to determine a data transmission scheme based on the first message, the data transmission scheme comprising a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme.

[0016] In a sixth aspect, an embodiment of the present application provides a chip module, comprising a transceiver component and a chip,

[0017] The chip is configured to receive a first message through the transceiver component.

[0018] The chip is further configured to determine a data transmission scheme based on the first message, the data transmission scheme comprising a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme.

[0019] In a seventh aspect, an embodiment of the present application provides a chip, configured to send a first message, the first message being used to determine a data transmission scheme, the data transmission scheme comprising a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme.

[0020] In an eighth aspect, an embodiment of the present application provides a chip module, comprising a transceiver component and a chip,

[0021] The chip is configured to send a first message through the transceiver component, the first message being used to determine a data transmission scheme, the data transmission scheme comprising a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme.

[0022] In a ninth aspect, an embodiment of the present application provides an electronic device, comprising a processor, a memory, a communication interface, and one or more programs, the one or more programs being stored in the memory and configured to be executed by the processor, and the program comprising instructions for performing part or all of the steps described in the method of the first aspect or the second aspect.

[0023] In a tenth aspect, an embodiment of the present application provides a computer readable storage medium, storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform part or all of the steps described in the method of the first aspect or the second aspect.

[0024] In an eleventh aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on an electronic device, cause the electronic device to perform the method of the first aspect or the second aspect.

[0025] The technical scheme provided in the application is that a terminal device receives a first message sent by a network device, and determines a data transmission scheme based on the first message, the data transmission scheme including a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme, thereby providing a technical scheme for determining a terminal device transmission scheme. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of a wireless communication system provided by an embodiment of the application;

[0027] Figure 2 is a flowchart of a determination method of a transmission scheme provided by an embodiment of the application;

[0028] Figure 3 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0029] Figure 4 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0030] Figure 5 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0031] Figure 6 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0032] Figure 7 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0033] Figure 8 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0034] Figure 9 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0035] Figure 10 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0036] Figure 11 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0037] Figure 12 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0038] Figure 13 is a flowchart of another determination method of a transmission scheme provided by an embodiment of the application;

[0039] Figure 14 is a flow diagram of another method for determining a transmission scheme provided by embodiments of the present application;

[0040] Figure 15 is a flow diagram of another method for determining a transmission scheme provided by embodiments of the present application;

[0041] Figure 16 is a flow diagram of another method for determining a transmission scheme provided by embodiments of the present application;

[0042] Figure 17 is a flow diagram of another method for determining a transmission scheme provided by embodiments of the present application;

[0043] Figure 18 is a flow diagram of another method for determining a transmission scheme provided by embodiments of the present application;

[0044] Figure 19 is a flow diagram of another method for determining a transmission scheme provided by embodiments of the present application;

[0045] Figure 20 is a flow diagram of another method for determining a transmission scheme provided by embodiments of the present application;

[0046] Figure 21 is a flow diagram of another method for determining a transmission scheme provided by embodiments of the present application;

[0047] Figure 22 is a functional unit composition block diagram of a device for determining a transmission scheme provided by embodiments of the present application;

[0048] Figure 23 is a structural diagram of an electronic device provided by embodiments of the present application. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0050] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: Long Term Evolution (Long Term Evolution, LTE) system, 5G communication system (for example, New Radio (New Radio, NR)), the 5G mobile communication system includes non-standalone (non-standalone, NSA) 5G mobile communication system and / or standalone (standalone, SA) 5G mobile communication system. The technical solutions provided in the present application can also be applied to a communication system that integrates multiple communication technologies (for example, a communication system that integrates LTE technology and NR technology), or to a future new communication system, for example, a 6G communication system, a 7G communication system, etc. The embodiments of the present application do not limit this. The technical solutions of the embodiments of the present application are also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, vehicle-to-anything (Vehicle-to-Everything) architecture, etc.

[0051] The network device related to the embodiments of the present application can be a base station (Base Station, BS), also known as a base station device, which is a device deployed in a wireless access network to provide wireless communication functions. For example, devices providing base station functions in 2G networks include base transceiver stations (Base Transceiver Station, BTS) and base station controllers (Base Station Controller, BSC), devices providing base station functions in 3G networks include NodeB (NodeB) and radio network controllers (Radio Network Controller, RNC), devices providing base station functions in 4G networks include evolved NodeB (evolved NodeB, eNB), in wireless local area networks (Wireless Local Area Networks, WLAN), the device providing the base station function is the access point (Access Point, AP), and the device providing the base station function in the 5G new radio (New Radio, NR) includes the continued evolution of NodeB (gNB), and the device providing the base station function in the future new communication system, etc.

[0052] Embodiments of the present application relate to a terminal device including a device with wireless communication function. The terminal device can be a mobile phone, a pad, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical treatment, a wireless terminal in smart grid, a wireless terminal in smart home, etc. The terminal device can also be a handheld device with wireless communication function, a vehicle-mounted device, a wearable device, a computer device, or other processing device connected to a wireless modem, a terminal device in a future 5G network, or a terminal device in a future evolved public land mobile network (PLMN), etc. The terminal device can be called by different names in different networks, such as user equipment, access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user apparatus, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), terminal device in a 5G network or future evolved network, etc. Embodiments of the present application are not limited thereto.

[0053] Please refer to Figure 1 , Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application. As shown in Figure 1 , the wireless communication system can include a network device and a terminal device. The network device can communicate with the terminal device through wireless communication. The network device can send a message to the terminal device, so that the terminal device can determine a transmission scheme of data.

[0054] The network device can include a plurality of Transmission and Reception Points (TRPs) and / or a plurality of Remote Radio Heads (RRHs), which can form a Hyper cell. The TRPs and / or RRHs in the Hyper cell share a same Hyper cell ID. Each TRP and / or RRH can communicate with a terminal device. The terminal device can communicate with multiple TRPs and / or RRHs simultaneously.

[0055] Figure 1 The number and form of the network device and the terminal device shown in the figures are only for example and do not constitute a limitation on the embodiments of the present application.

[0056] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0057] Please refer to Figure 2 , Figure 2 A flowchart of a determination method of a transmission scheme is provided for the embodiments of the present application, which is applied to a wireless communication system as shown in Figure 1 The method includes the following steps as shown in Figure 2

[0058] S210, the network device sends a first message.

[0059] In the present application, for a terminal device supporting Coherent Joint Transmission (CJT) of multiple sites (such as multiple RRHs and / or multiple TRPs, etc.), the network device can send a first message to the terminal device to instruct the terminal device to use a coherent joint transmission scheme for data transmission through the first message.

[0060] The first message includes at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) signaling, and Downlink Control Information (DCI).

[0061] ​Specifically, the network device can send RRC signaling to the terminal device, and the terminal device determines the data transmission scheme of the terminal device according to the value of the RRC signaling; the network device can also send MAC signaling to the terminal device, and the terminal device determines the data transmission scheme of the terminal device according to the MAC signaling; the network device can also send DCI to the terminal device, and the terminal device determines the data transmission scheme of the terminal device according to the number of transmission configuration indicator states (TCI states) indicated in the DCI.

[0062] For example, the network device can also send RRC signaling and MAC signaling to the terminal device, and the terminal device can determine the data transmission scheme of the terminal device according to the RRC signaling and / or the MAC signaling.

[0063] For example, the network device can also send DCI and MAC signaling to the terminal device at the same time, and the terminal device can determine the data transmission scheme of the terminal device according to the DCI and / or the MAC signaling. For the MAC signaling, the terminal device can also determine the QCL relationship of the antenna port according to the TCI state field in the MAC signaling, so as to correctly receive and demodulate the signal.

[0064] It should be noted that the data transmission scheme in the present application can be used for data transmission or control information transmission. For example, the data transmission scheme can be a data channel transmission scheme or a control channel transmission scheme, which is not limited in the present application.

[0065] S220, the terminal device receives the first message and determines the data transmission scheme based on the first message, wherein the data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0066] The first transmission scheme can include a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. Coherent joint transmission can use the transmission antennas of multiple nodes to cooperatively transmit to achieve higher capacity and reliable transmission of wireless links at the cell edge, which can effectively solve the problem of cell edge interference. The coherent joint transmission scheme requires that the signals transmitted by each node have certain correlation characteristics at the receiving end, so that each signal can obtain larger combining gain.

[0067] For example, for the downlink coherent joint transmission scheme, the network device can simultaneously send beamforming signals to the terminal device supporting coherent joint transmission by separate RRHs and / or TRPs to improve capacity in one step, and coherent joint transmission can promote distributed beamforming transmission and reduce interference of highly overlapping base stations to users.

[0068] It should be noted that the application uses a coherent joint transmission scheme to define a transmission scheme in which the signals transmitted by each node have certain correlation characteristics at the receiving end, but other standards also have the same meaning. The name of the application is also applicable to the application, that is, the application does not limit the name of the data transmission scheme.

[0069] It should be noted that multi-site coherent joint transmission is a multi-site coherent joint transmission, or different data belonging to the same physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) is transmitted from different sites to the terminal device, or multiple sites are virtually formed into one site for transmission. The name of the application is also applicable to the application, that is, the application does not limit the name of these parameters.

[0070] Optionally, the data transmission scheme further includes a second transmission scheme.

[0071] The second transmission scheme can include a multi-site non-coherent joint transmission frequency-division multiplexing (Frequency-division multiplexing, FDM) transmission scheme and a multi-site non-coherent joint transmission time-division multiplexing (time-division multiplexing, TDM) transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc.

[0072] It can be seen that the application provides a determination method of a transmission scheme, a terminal device receives a first message sent by a network device, and determines a data transmission scheme based on the first message, the data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme. A technical scheme for determining the transmission scheme of the terminal device is provided.

[0073] The implementation of the application will be described in detail below from the case that the first message includes at least one of RRC signaling, MAC signaling, and DCI.

[0074] Embodiment one

[0075] Please refer to Figure 3 , Figure 3 Another determination method of a transmission scheme provided by the embodiment of the application is shown in the flowchart, which is applied to a wireless communication system as shown in Figure 1 As shown in Figure 3 The method includes the following steps.

[0076] S301, the network device sends a radio resource control (RRC) signaling, and the RRC signaling is used to indicate that the data transmission scheme of the terminal device is a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0077] In the embodiment of the present application, the network device can indicate the data transmission scheme of the terminal device as the coherent joint transmission scheme through RRC signaling, and the RRC signaling can be used only to indicate the first transmission scheme.

[0078] The RRC signaling can be used to indicate the coherent joint transmission, and the value options of the RRC signaling are {enabled, disabled}. When the value option of the RRC signaling is enabled, it indicates that the network device configures the first transmission scheme, and the first transmission scheme is enabled. That is, the terminal device uses the first transmission scheme for data transmission. If the value option of the RRC signaling is disabled, it indicates that the network device does not configure the first transmission scheme, and the first transmission scheme is not enabled. That is, the terminal device does not use the first transmission scheme for data transmission.

[0079] For example, the value options of the RRC signaling can also be represented by other values. For example, when the value option of the RRC signaling is 1, it indicates that the network device configures the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme. When the value option of the RRC signaling is 0, it indicates that the network device does not configure the first transmission scheme, and the RRC signaling is used to indicate that the terminal device does not use the first transmission scheme. The embodiment of the present application does not make a limitation.

[0080] Optionally, the first transmission scheme is associated with at least two TCIstates.

[0081] For the first transmission scheme supporting the multi-point coherent joint transmission, it can be associated with at least two TCIstates.

[0082] S302, the terminal device receives the RRC signaling, and determines the data transmission scheme as the first transmission scheme when the value option of the RRC signaling is the first option.

[0083] Specifically, after receiving the RRC signaling, the terminal device can determine the data transmission scheme according to the value option of the RRC signaling. Specifically, when the value option of the RRC signaling is the first option, for example, the value option of the RRC signaling is enabled or 1, the terminal device determines that the data transmission scheme is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission.

[0084] In the embodiment of the present application, the terminal device receives the RRC signaling sent by the network device, and determines the data transmission scheme as the coherent joint transmission scheme when the value option of the RRC signaling is the first option, thereby providing a technical scheme for determining the transmission scheme of the terminal device.

[0085] Embodiment Two

[0086] Please refer to Figure 4 , Figure 4 Another determination method flow chart of transmission scheme provided by the embodiment of the application is applied to a wireless communication system as shown in Figure 1 The method includes the following steps as shown in Figure 4

[0087] S401, the network device sends radio resource control (RRC) signaling, the RRC signaling is used to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0088] In the embodiment of the application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the RRC signaling. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc.

[0089] The name of the RRC signaling is repetitionScheme-r18, which can be used to indicate the first transmission scheme and / or the second transmission scheme, and the value options of the RRC signaling can be {fdmSchemeA, fdmSchemeB, tdmSchemeA, cjtScheme}. The cjtScheme represents the coherent joint transmission scheme, and when the value option of the RRC signaling is cjtScheme, it indicates that the network device configures the first transmission scheme, and the first transmission scheme is enabled, that is, the terminal device can use the first transmission scheme for data transmission. Any one of fdmSchemeA, fdmSchemeB, and tdmSchemeA represents the second transmission scheme, and if the value option of the RRC signaling is any one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, it indicates that the network device configures the second transmission scheme, and the second transmission scheme is enabled, that is, the terminal device uses the second transmission scheme for data transmission.

[0090] ​For example, the value option of the RRC signaling can also be represented by other values. For example, the first transmission scheme can be represented by a value option of 0. When the value option of the RRC signaling is 0, it indicates that the network device configures the first transmission scheme, and the RRC signaling is used to instruct the terminal device to use the first transmission scheme. The second transmission scheme can be represented by a value option of non-0. When the value option of the RRC signaling is 1, 2, or 3, it indicates that the network device configures the second transmission scheme, and the RRC signaling is used to instruct the terminal device to use the second transmission scheme. The embodiments of the present application are not limited in comparison.

[0091] Optionally, the first transmission scheme is associated with at least two TCI states.

[0092] For the first transmission scheme supporting multi-point coherent joint transmission, it can be associated with at least two TCI states.

[0093] S402, the terminal device receives the RRC signaling, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to the value option of the RRC signaling.

[0094] Specifically, after receiving the RRC signaling, the terminal device can determine the data transmission scheme according to the value option of the RRC signaling. Specifically, when the value option of the RRC signaling is the second option, for example, the value option of the RRC signaling is cjtScheme or 0, the terminal device determines that the data transmission scheme is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission. When the value option of the RRC signaling is the third option, for example, the value option of the RRC signaling is at least one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, or at least one of 1, 2, and 3, the terminal device determines that the data transmission scheme is the second transmission scheme, and the terminal device can use frequency division multiplexing and / or time division multiplexing in the multi-site non-coherent joint transmission to perform data reception and / or transmission.

[0095] In the embodiments of the present application, the terminal device receives the RRC signaling sent by the network device, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to the value option of the RRC signaling, thereby providing a technical solution for determining the transmission scheme of the terminal device.

[0096] Embodiment Three

[0097] Please refer to Figure 5 , Figure 5 Another method for determining a transmission scheme provided by the embodiments of the present application is shown in the flowchart. It is applied to a wireless communication system as shown in Figure 1 . As shown inFigure 5 As shown, the method comprises the following steps.

[0098] S501, the network device sends downlink control information DCI, the DCI comprises a first field, the first field is used to indicate the first transmission scheme and / or the second transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0099] In the embodiment of the application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the DCI. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc.

[0100] Among them, the network device newly defines a first field in the DCI, and the first field is used to indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme. The first field can be 1 bit, which can be an additional 1 bit newly added in the DCI, or can be an existing 1 bit in the DCI, such as setting the 1 bit in the reserved field in the DCI as the first field, and the embodiment of the application does not limit this.

[0101] For example, when the first field takes a first value, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a second value, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the first field takes a value of 0, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a value of 1, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. For another example, when the first field takes a value of 1, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a value of 0, the first field can be used to indicate that the data transmission scheme is the second transmission scheme.

[0102] It should be noted that the first field in the application can also be 2 bits, 3 bits, 4 bits, etc., and the embodiments of the application do not limit the way of indicating the data transmission scheme as the first transmission scheme and / or the second transmission scheme according to different values.

[0103] Optionally, the first transmission scheme is associated with at least two TCI states.

[0104] Among them, for the first transmission scheme supporting multi-point coherent joint transmission, it can be associated with at least two TCI states.

[0105] S502, the terminal device receives the DCI, and determines, based on a first field in the DCI, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0106] Specifically, after receiving the DCI, the terminal device can determine its data transmission scheme according to the first field in the DCI. Specifically, when the first field indicates the first transmission scheme, the terminal device determines that its data transmission scheme is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission. When the first field indicates the second transmission scheme, the terminal device determines that its data transmission scheme is the second transmission scheme, and the terminal device can use frequency division multiplexing and / or time division multiplexing in multi-site non-coherent joint transmission to perform data reception and / or transmission.

[0107] For example, when the value of the first field in the DCI is 1, indicating the first transmission scheme, the terminal device determines that its data transmission scheme is the coherent joint transmission scheme; when the value of the first field in the DCI is 0, indicating the second transmission scheme, the terminal device determines that its data transmission scheme is the frequency division multiplexing and / or time division multiplexing transmission scheme.

[0108] In the embodiments of the present application, the terminal device receives the DCI sent by the network device, and determines, according to the first field in the DCI, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme, thereby providing a technical solution for determining the transmission scheme of the terminal device.

[0109] Embodiment Four

[0110] Please refer to Figure 6 , Figure 6 Another method for determining the transmission scheme provided in the embodiments of the present application is shown in the flowchart. The method is applied to a wireless communication system as shown in Figure 1 The method includes the following steps. Figure 6

[0111] S601, the network device sends downlink control information DCI, the DCI includes transmission configuration indication state TCI state, and the TCI state is indicated by a TCI field in the DCI.

[0112] In the embodiments of the present application, the network device can indicate, through the TCI field in the DCI, that the data transmission scheme of the terminal device is the first transmission scheme and / or the second transmission scheme. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. ​

[0113] The TCI field in the DCI can indicate one or more TCI states, and the network device can indicate the data transmission scheme used by the terminal device according to the number of the TCI states.

[0114] S602, the terminal device receives the DCI, and determines the data transmission scheme to be a first transmission scheme or a second transmission scheme according to the number of the transmission configuration indication state TCI state indicated by the DCI. The first transmission scheme is a coherent joint transmission scheme.

[0115] After receiving the DCI, the terminal device can determine whether to use the first transmission scheme for data transmission or the second transmission scheme for data transmission according to the number of the TCI state indicated by the DCI.

[0116] In the embodiments of the present application, the terminal device determines the data transmission scheme to be the first transmission scheme or the second transmission scheme according to the number of the transmission configuration indication state TCI state indicated by the TCI field in the DCI, including: when the number of the TCI state indicated by the DCI is greater than or equal to a first threshold, the terminal device determines the data transmission scheme to be the first transmission scheme; and when the number of the TCI state indicated by the DCI is less than the first threshold, the terminal device determines the data transmission scheme to be the second transmission scheme.

[0117] In one case, the first transmission scheme is associated with at least two TCI states.

[0118] Specifically, the coherent joint transmission scheme can be associated with at least two TCI states, and the first threshold can be 2. When the number of the TCI state indicated by the DCI is greater than or equal to 2, the terminal device can determine the data transmission scheme to be the first transmission scheme, which can use a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme to receive and / or transmit data. When the number of the TCI state indicated by the DCI is less than 2, the terminal device determines the data transmission scheme to be the second transmission scheme, which can use frequency division multiplexing and / or time division multiplexing in multi-site non-coherent joint transmission to receive and / or transmit data.

[0119] Alternatively, in another case, the first transmission scheme is associated with at least three TCI states.

[0120] In the embodiments of the present application, the terminal device receives the DCI sent by the network device, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to the number of the TCI state indicated by the DCI, thereby providing a technical scheme for determining the transmission scheme of the terminal device.

[0121] Embodiment Five

[0122] Please refer to Figure 7 , Figure 7 Another determination method flow chart of a transmission scheme provided in the embodiments of the present application is applied to a wireless communication system as shown in Figure 1 The method includes the following steps as shown in Figure 7

[0123] S701, the network device sends a media access control control element (MAC CE) signaling, and the MAC CE signaling includes at least three TCIstate fields.

[0124] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device to be the first transmission scheme and / or the second transmission scheme through the media access control element (Media Access Control Control Element, MAC CE) signaling. The first transmission scheme is a coherent joint transmission scheme, which is different from the second transmission scheme. The second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc.

[0125] Among them, the MAC CE can include at least 3 TCIstate fields.

[0126] S702, the terminal device receives the MAC CE signaling, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme based on the MAC CE, wherein the first transmission scheme is a coherent joint transmission scheme.

[0127] In the implementation of step 702, the terminal device can determine the data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to the subheader corresponding to the MAC CE. Specifically, the specific implementation manner of the terminal device determining the data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to the subheader corresponding to the MAC CE is not limited, that is, the network device can indicate the data transmission scheme to be the first transmission scheme and / or the second transmission scheme by defining a field of the subheader, or can indicate the data transmission scheme to be the first transmission scheme and / or the second transmission scheme by defining the value of a certain field, and the embodiments of the present application do not limit this.

[0128] ​The MAC header is composed of one or more MAC subheaders, and each subheader corresponds to a MAC CE. After receiving the MAC CE, the terminal device can determine the first transmission scheme and / or the second transmission scheme by analyzing the subheader corresponding to the MAC CE.

[0129] In the embodiments of the present application, the terminal device receives the MAC CE signaling sent by the network device, determines the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme according to the MAC CE signaling, and provides a technical scheme for determining the transmission scheme of the terminal device. Moreover, the terminal device can determine the QCL relationship of the antenna port through the TCI state field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0130] Embodiment six

[0131] Please refer to Figure 8 , Figure 8 Another method for determining the transmission scheme provided in the embodiments of the present application is shown in the flowchart. The method is applied to a wireless communication system as shown in Figure 1 The method includes the following steps. Figure 8

[0132] S801, the network device sends a medium access control control element (MAC CE) signaling, the MAC CE signaling is used for configuring a TCI state of a control resource set (CORESET), and the MAC CE signaling includes at least three TCI state fields.

[0133] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the MAC CE signaling. The first transmission scheme is a coherent joint transmission scheme, which is different from the second transmission scheme. The second transmission scheme can include an FDM transmission scheme and a TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc.

[0134] When the MAC CE is used for configuring the TCI state of the control resource set (CORESET), the MAC CE can be associated with at least three TCI state fields.

[0135] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the TCI state field is included in the first byte, and the first byte is the next byte of the byte where the second field is located.

[0136] ​Optionally, the MAC CE signaling includes one or more second fields, the second field being used to indicate whether the first byte exists, the first byte being the next byte of the byte where the second field is located.

[0137] wherein, when the second field takes the first value, the second field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the second value, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0138] Further, the second field can be 1 bit. For example, when the second field takes the value 0, the first field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the value 1, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist. For another example, when the second field takes the value 1, the second field can be used to indicate that the TCI state field is included in the first byte, or the second field can be used to indicate that the first byte exists; when the second field takes the value 0, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0139] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc., and the present application does not limit the way of indicating whether the TCI state field is included in the first byte according to different values.

[0140] It should be noted that the second field can be an additional field newly added in the MAC CE, or an existing field in the MAC CE, such as setting one or more bits in the reserved field in the MAC CE as the second field, and the present application does not limit this.

[0141] For example, the MAC CE signaling includes one second field, and the MAC CE can be as shown in Table 1.

[0142] Table 1

[0143]

[0144] wherein, the Serving Cell ID field is used to indicate the serving cell to which the MAC CE is applicable; the CORESET ID field is used to indicate the COESET configured by the MAC CE; and the TCI state ID 0,1 , TCI state ID0,2 TCI state ID 0,3 TCI state configuration for indicating the CORESET indicated by the CORESET ID field; the C field is the second field, for indicating TCI state ID 0,3 whether it exists, the R field is a reserved field.

[0145] S802, the terminal device receives the MAC CE signaling, and determines, based on the MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme, the first transmission scheme being a coherent joint transmission scheme.

[0146] Step 802, in a specific implementation, the terminal device can determine, according to the subheader corresponding to the MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme. Specifically, the specific implementation manner in which the terminal device determines, according to the subheader corresponding to the MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme is not limited, that is, the network device can indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme by defining a field of the subheader, or can indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme by defining a value of a certain field, and the embodiments of the present application do not limit this.

[0147] Wherein, one MAC header is composed of one or more MAC subheaders, and each subheader corresponds to one MAC CE. After the terminal device receives the MAC CE, the terminal device can determine that the MAC CE indicates the first transmission scheme and / or the second transmission scheme by analyzing the subheader corresponding to the MAC CE.

[0148] In the embodiments of the present application, the terminal device receives the MAC CE signaling sent by the network device, and determines, according to the MAC CE signaling, that the data transmission scheme thereof is the first transmission scheme and / or the second transmission scheme, thereby providing a technical scheme for determining the transmission scheme of the terminal device. Moreover, when the MAC CE is used to configure the TCI state of the control resource set CORESET, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, thereby being able to correctly receive and demodulate the signal.

[0149] Embodiment seven

[0150] Please refer to Figure 9 , Figure 9 Another method for determining a transmission scheme provided by the embodiments of the present application is shown in the flowchart. The method is applied to a wireless communication system as shown in Figure 1 Figure 9 ​As shown, the method comprises the following steps.

[0151] S901, the network device sends a media access control control element (MAC CE) signaling, the MAC CE signaling is used for configuring a TCI state of a physical downlink shared channel (PDSCH), and an i-th code point in a TCI field in the DCI indicates that the MAC CE includes at least three TCI state fields, the i is an integer.

[0152] In the embodiment of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the media access control (Media Access Control, MAC) control element (Control Element, CE) signaling. The first transmission scheme is a coherent joint transmission scheme, which is different from the second transmission scheme. The second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc.

[0153] Wherein, when the MAC CE is used for configuring the TCI state of the PDSCH, and the i-th code point in the TCI field in the DCI indicates at least 3 TCI state fields, then the TCI state configuration corresponding to the i-th code point in the TCI field in the DCI in the MAC CE can include at least 3 TCI state fields, the i is the index of the code point of the TCI field in the DCI. According to the TCI state field carried in the MAC CE, the terminal device can determine the QCL relationship of the antenna port, so as to correctly receive and demodulate the signal.

[0154] Optionally, the MAC CE signaling includes one or more second fields, the second field is used to indicate whether the TCI state field is included in the first byte, the first byte is the next byte of the byte where the second field is located.

[0155] Optionally, the MAC CE signaling includes one or more second fields, the second field is used to indicate whether the TCI state field is included in the first byte, the first byte is the next byte of the byte where the second field is located.

[0156] When the second field takes the first value, the second field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the second value, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0157] Further, the second field can be 1 bit. For example, when the second field takes the value 0, the first field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the value 1, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist. For another example, when the second field takes the value 1, the first field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the value 0, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0158] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc., and the present application does not limit the way of indicating whether the TCI state field is included in the first byte according to different values.

[0159] It should be noted that the second field can be an additional field newly added in the MAC CE, or an existing field in the MAC CE, such as setting one or more bits in the reserved field in the MAC CE as the second field, and the present application does not limit this.

[0160] For example, the MAC CE signaling includes a plurality of second fields, and the MAC CE can be as shown in Table 2.

[0161] Table 2

[0162]

[0163] The MAC CE can include a MAC protocol data unit (PDU) subheader identifier of the identity of the logical channel (LCID). The Serving Cell ID field is used to indicate the serving cell to which the MAC CE applies, and the length of the field can be 5 bits. The Bandwidth Part (BWP) ID field can be used to indicate a downlink (DL) BWP and / or its associated uplink (UL) BWP, and the MAC CE can apply the DL BWP and / or its associated UL BWP to the code point of the specified DCI bandwidth part indicator field. The length of the BWP ID field can be 2 bits. The R field is a reserved field.

[0164] Further, the C i field, the C i,1 field, and / or the C i,2 field are all the second fields, and the C i field is used to indicate whether the TCI state ID i,2 exists, the C i,1 field is used to indicate whether the TCI state ID i,3 exists, and the C i,2 field is a reserved field. The TCI state ID i,1 , the TCI state ID i,2 , and the TCI state ID i,3 are the TCI states configured by the i-th code point in the TCI field in the corresponding DCI, where the i is the index of the code point in the TCI field in the DCI.

[0165] S902, the terminal device receives the MAC CE signaling and determines, based on the MAC CE, that the data transmission scheme is a first transmission scheme and / or a second transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0166] The step 902, in a specific implementation, the terminal device can determine the data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the subheader corresponding to the MAC CE. Specifically, the specific implementation manner that the terminal device determines the data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the subheader corresponding to the MAC CE is not limited, that is, the network device can indicate the data transmission scheme as the first transmission scheme and / or the second transmission scheme by defining a field of the subheader, or can indicate the data transmission scheme as the first transmission scheme and / or the second transmission scheme by defining a value of a certain field, and the embodiment of the application does not limit this.

[0167] Wherein, one MAC header is composed of one or more MAC subheaders, and each subheader corresponds to one MAC CE. After the terminal device receives the MAC CE, the terminal device can determine that the MAC CE indicates the first transmission scheme and / or the second transmission scheme by analyzing the subheader corresponding to the MAC CE.

[0168] In the embodiment of the application, the terminal device receives the MAC CE signaling sent by the network device, and determines that the data transmission scheme of the terminal device is the first transmission scheme and / or the second transmission scheme according to the MAC CE signaling, thereby providing a technical scheme for determining the transmission scheme of the terminal device. And when the MAC CE is used for the TCI state of the PDSCH, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0169] Embodiment eight

[0170] Please refer to Figure 10 , Figure 10 Another method for determining a transmission scheme provided in the embodiment of the application is applied to a wireless communication system as shown in Figure 1 As shown in Figure 10 , the method comprises the following steps.

[0171] S101, the network device sends radio resource control (RRC) signaling and media access control (MAC) control element (CE) signaling, the RRC signaling is used to indicate that the data transmission scheme of the terminal device is a first transmission scheme, the first transmission scheme is a coherent joint transmission scheme, and the MAC CE signaling comprises at least three TCI state fields.

[0172] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the coherent joint transmission scheme through RRC signaling, and the RRC signaling can be used only to indicate the first transmission scheme. The network device can also indicate the TCI state configuration through the sending of MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus correctly receive and demodulate the signal.

[0173] The RRC signaling can be used to indicate the coherent joint transmission, and the value options thereof are {enabled, disabled}. When the value option of the RRC signaling is enabled, it indicates that the network device configures the first transmission scheme, and the first transmission scheme is enabled; that is, the terminal device uses the first transmission scheme for data transmission. If the value option of the RRC signaling is disabled, it indicates that the network device does not configure the first transmission scheme, and the first transmission scheme is not enabled; that is, the terminal device does not use the first transmission scheme for data transmission.

[0174] For example, the value options of the RRC signaling can also be represented by other values, for example, when the value option of the RRC signaling is 1, it indicates that the network device configures the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme; when the value option of the RRC signaling is 0, it indicates that the network device does not configure the first transmission scheme, and the RRC signaling is used to indicate that the terminal device does not use the first transmission scheme. The embodiments of the present application are not limited in this regard.

[0175] S102, the terminal device receives the RRC signaling and the MAC CE signaling, and determines the data transmission scheme as the first transmission scheme based on the RRC signaling and the MAC CE.

[0176] Specifically, after receiving the RRC signaling, the terminal device can determine the data transmission scheme according to the value option of the RRC signaling. Specifically, when the value option of the RRC signaling is the first option, for example, the value option of the RRC signaling is enabled or 1, the terminal device determines that the data transmission scheme thereof is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission.

[0177] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus correctly receive and demodulate the signal.

[0178] In the embodiment of the present application, the terminal device receives the RRC signaling and the MAC CE signaling sent by the network device, and determines the data transmission scheme of the terminal device as the coherent joint transmission scheme when the value option of the RRC signaling is the first option, thereby providing a technical scheme for determining the transmission scheme of the terminal device. Meanwhile, the QCL relationship of the antenna port can be determined according to the TCI state field carried in the MAC CE, so that the signal can be correctly received and demodulated.

[0179] Embodiment Nine

[0180] Please refer to Figure 11 , Figure 11 Another flowchart of a method for determining a transmission scheme provided in the embodiment of the present application is applied to a wireless communication system as shown in Figure 1 . As shown in Figure 11 , the method comprises the following steps.

[0181] S111, the network device sends radio resource control (RRC) signaling and media access control (MAC) control element (CE) signaling, the RRC signaling is used to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, the first transmission scheme is a coherent joint transmission scheme, and the MAC CE signaling comprises at least three TCI state fields.

[0182] In the embodiment of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the RRC signaling. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. Meanwhile, the network device can indicate the TCI state configuration through the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and then the signal can be correctly received and demodulated.

[0183] The RRC signaling is named repetitionScheme-r18, which can be used to indicate the first transmission scheme and / or the second transmission scheme, and the value options of the RRC signaling can be {fdmSchemeA, fdmSchemeB, tdmSchemeA, cjtScheme}. The cjtScheme represents a coherent joint transmission scheme. When the value option of the RRC signaling is cjtScheme, it indicates that the network device configures the first transmission scheme, and the first transmission scheme is enabled, i.e., the terminal device can use the first transmission scheme for data transmission. Any one of fdmSchemeA, fdmSchemeB, and tdmSchemeA represents the second transmission scheme. If the value option of the RRC signaling is any one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, it indicates that the network device configures the second transmission scheme, and the second transmission scheme is enabled, i.e., the terminal device uses the second transmission scheme for data transmission.

[0184] For example, the value options of the RRC signaling can also be represented by other values. For example, the first transmission scheme can be represented by a value option of 0. When the value option of the RRC signaling is 0, it indicates that the network device configures the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme. The second transmission scheme can be represented by a value option of non-0. When the value option of the RRC signaling is 1, 2, or 3, it indicates that the network device configures the second transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the second transmission scheme. The embodiments of the present application are not limited in this regard.

[0185] In S112, the terminal device receives the RRC signaling and the MAC CE signaling, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme based on the RRC signaling and the MAC CE.

[0186] Specifically, after receiving the RRC signaling, the terminal device can determine the data transmission scheme according to the value option of the RRC signaling. Specifically, when the value option of the RRC signaling is the second option, for example, the value option of the RRC signaling is cjtScheme or 0, the terminal device determines that the data transmission scheme thereof is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission. When the value option of the RRC signaling is the third option, for example, the value option of the RRC signaling is at least one of fdmSchemeA, fdmSchemeB, tdmSchemeA, or at least one of 1, 2, 3, the terminal device determines that the data transmission scheme thereof is the second transmission scheme, and the terminal device can use the frequency division multiplexing and / or the time division multiplexing in the multi-site non-coherent joint transmission to perform data reception and / or transmission.

[0187] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna port in the first transmission scheme, and further being able to correctly receive and demodulate the signal.

[0188] In the embodiment of the present application, the terminal device receives the RRC signaling and the MAC CE signaling sent by the network device, determines the data transmission scheme thereof as the first transmission scheme and / or the second transmission scheme according to the value option of the RRC signaling, and provides a technical scheme for determining the transmission scheme of the terminal device. Meanwhile, the QCL relationship of the antenna port can be determined according to the TCI state field carried in the MAC CE, thereby being able to correctly receive and demodulate the signal.

[0189] Embodiment ten

[0190] Please refer to Figure 12 , Figure 12 Another flowchart of a method for determining a transmission scheme provided in the embodiment of the present application is applied to a wireless communication system as shown in Figure 1 . As shown in Figure 12 , the method comprises the following steps.

[0191] S121, the network device sends downlink control information DCI and media access control control element MAC CE signaling, the DCI includes a first field, the first field is used to indicate a first transmission scheme and / or a second transmission scheme, the MAC CE signaling includes at least three TCI state fields, and the first transmission scheme is a coherent joint transmission scheme.

[0192] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the DCI. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the sending of the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and then correctly receive and demodulate the signal.

[0193] In the embodiments of the present application, the network device newly defines a first field in the DCI, and the first field is used to indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme. The first field can be 1 bit, which can be an additional 1 bit newly added in the DCI, or can be an existing 1 bit in the DCI, such as setting the 1 bit in the reserved field in the DCI as the first field, and the embodiments of the present application do not limit this.

[0194] For example, when the first field takes the first value, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes the second value, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the first field takes the value 0, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes the value 1, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. For another example, when the first field takes the value 1, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes the value 0, the first field can be used to indicate that the data transmission scheme is the second transmission scheme.

[0195] It should be noted that the first field in the present application can also be 2 bits, 3 bits, 4 bits, etc., and the embodiments of the present application do not limit the way of indicating the data transmission scheme as the first transmission scheme and / or the second transmission scheme according to different values.

[0196] S122, the terminal device receives the DCI and the MAC CE signaling, and determines the data transmission scheme as the first transmission scheme and / or the second transmission scheme based on the DCI and the MAC CE.

[0197] Specifically, upon receiving the DCI, the terminal device can determine its data transmission scheme based on the first field in the DCI. Specifically: when the first field indicates a first transmission scheme, the terminal device determines its data transmission scheme as the first transmission scheme, meaning the terminal device can use a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme to receive and transmit data. When the first field indicates a second transmission scheme, the terminal device determines its data transmission scheme as the second transmission scheme, meaning the terminal device can use frequency division multiplexing and / or time division multiplexing in multi-site incoherent joint transmission to receive and / or transmit data.

[0198] For example, when the first field in the DCI is set to 1, indicating the first transmission scheme, the terminal device determines its data transmission scheme to be a coherent joint transmission scheme; when the first field in the DCI is set to 0, indicating the second transmission scheme, the terminal device determines its data transmission scheme to be a frequency division multiplexing and / or time division multiplexing transmission scheme.

[0199] Furthermore, upon receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme based on the TCI state field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna port in the first transmission scheme, and thus being able to correctly receive and demodulate signals.

[0200] In this embodiment, the terminal device receives RRC signaling and MAC CE signaling sent by the network device, and determines its data transmission scheme as a first transmission scheme and / or a second transmission scheme based on the first field in the DCI, providing a technical solution for determining the terminal device's transmission scheme. Simultaneously, the QCL relationship of the antenna port can be determined based on the TCI field carried in the MAC CE, thereby enabling correct signal reception and demodulation.

[0201] Example 11

[0202] Please see Figure 13 , Figure 13 A flowchart illustrating another method for determining a transmission scheme provided in this application embodiment, applicable to, for example... Figure 1 The wireless communication system shown. (As shown) Figure 13 As shown, the method includes the following steps.

[0203] S131. The network device sends downlink control information (DCI) and media access control element (MAC CE) signaling. The DCI includes a transmission configuration indication state (TCI state), which is indicated by a TCI field in the DCI. The MAC CE signaling includes at least three TCI state fields.

[0204] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the TCI state indicated by the DCI. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the sending of the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus the signal can be correctly received and demodulated.

[0205] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the TCI state indicated by the DCI. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the sending of the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus the signal can be correctly received and demodulated.

[0206] S132, the terminal device receives the DCI and the MAC CE signaling, and determines the data transmission scheme as the first transmission scheme and / or the second transmission scheme based on the DCI and the MAC CE, wherein the first transmission scheme is a coherent joint transmission scheme.

[0207] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the TCI state indicated by the DCI. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the sending of the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus the signal can be correctly received and demodulated.

[0208] In the embodiments of the present application, the terminal device determines the data transmission scheme as the first transmission scheme or the second transmission scheme according to the number of transmission configuration indication states TCI states indicated by the TCI field in the DCI, including: when the number of the TCI states indicated by the DCI is greater than or equal to a first threshold, the terminal device determines the data transmission scheme as the first transmission scheme; and when the number of the TCI states indicated by the DCI is less than the first threshold, the terminal device determines the data transmission scheme as the second transmission scheme.

[0209] Specifically, the coherent joint transmission scheme can be associated with at least two TCI states, and the first threshold value can be 2. Therefore, when the number of TCI states indicated by the DCI is greater than or equal to 2, the terminal device can determine that its data transmission scheme is the first transmission scheme, which can use a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme for data reception and transmission. When the number of TCI states indicated by the DCI is less than 2, the terminal device determines that its data transmission scheme is the second transmission scheme, which can use frequency division multiplexing and / or time division multiplexing in multi-site non-coherent joint transmission for data reception and / or transmission.

[0210] For example, when the value of the first field in the DCI is 1, indicating the first transmission scheme, the terminal device determines that its data transmission scheme is the coherent joint transmission scheme; when the value of the first field in the DCI is 0, indicating the second transmission scheme, the terminal device determines that its data transmission scheme is the multi-site non-coherent joint transmission frequency division multiplexing and / or multi-site non-coherent joint transmission time division multiplexing transmission scheme.

[0211] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna port in the first transmission scheme, and thus being able to correctly receive and demodulate the signal.

[0212] In the embodiments of the present application, the terminal device receives the DCI and the MAC CE signaling sent by the network device, determines that its data transmission scheme is the first transmission scheme and / or the second transmission scheme according to the number of TCI states indicated by the DCI, and provides a technical scheme for determining the transmission scheme of the terminal device. At the same time, the QCL relationship of the antenna port can be determined according to the TCI state field carried in the MAC CE, so that the signal can be correctly received and demodulated.

[0213] Embodiment Twelve

[0214] Please refer to Figure 14 , Figure 14 Another transmission scheme determination method flowchart provided in the embodiments of the present application is applied to a wireless communication system as shown in Figure 1 As shown in Figure 14 , the method comprises the following steps.

[0215] S141, the network device sends radio resource control (RRC) signaling and medium access control (MAC) control element (CE) signaling, the RRC signaling is used to indicate that the data transmission scheme of the terminal device is a first transmission scheme, the first transmission scheme is a coherent joint transmission scheme, the MAC CE signaling is used to configure a TCI state of a control resource set (CORESET), and the MAC CE signaling includes at least three TCI state fields.

[0216] In the embodiment of the present application, the network device can indicate the data transmission scheme of the terminal device as the coherent joint transmission scheme through the RRC signaling, and the RRC signaling can be used only to indicate the first transmission scheme. The network device can also indicate the TCI state configuration through the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and then correctly receive and demodulate the signal.

[0217] The RRC signaling can be used to indicate the coherent joint transmission, and the value options are {enabled, disabled}. When the value option of the RRC signaling is enabled, it indicates that the network device configures the first transmission scheme, and the first transmission scheme is enabled; that is, the terminal device uses the first transmission scheme for data transmission. If the value option of the RRC signaling is disabled, it indicates that the network device does not configure the first transmission scheme, and the first transmission scheme is not enabled; that is, the terminal device does not use the first transmission scheme for data transmission.

[0218] For example, the value options of the RRC signaling can also be represented by other values, for example, when the value option of the RRC signaling is 1, it indicates that the network device configures the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme; when the value option of the RRC signaling is 0, it indicates that the network device does not configure the first transmission scheme, and the RRC signaling is used to indicate that the terminal device does not use the first transmission scheme. The embodiment of the present application does not limit the comparison.

[0219] When the MAC CE is used to configure the TCI state of the CORESET, the MAC CE can be associated with at least three TCI state fields.

[0220] Optionally, the MAC CE signaling includes one or more second fields, and the second fields are used to indicate whether the TCI state fields are included in a first byte, the first byte being a next byte of a byte where the second fields are located.

[0221] Optionally, the MAC CE signaling includes one or more second fields, the second field being used to indicate whether the first byte exists, the first byte being a next byte of a byte where the second field is located.

[0222] In the second field taking the first value, the second field can be used to indicate that the TCI state field is included in the first byte; in the second field taking the second value, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0223] Further, the second field can be 1 bit. For example, in the second field taking 0, the first field can be used to indicate that the TCI state field is included in the first byte; in the second field taking 1, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist. For another example, in the second field taking 1, the second field can be used to indicate that the TCI state field is included in the first byte, or the second field can be used to indicate that the first byte exists; in the second field taking 0, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0224] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc., and the present application does not limit the way of indicating whether the TCI state field is included in the first byte according to different values.

[0225] It should be noted that the second field can be an additional field newly added in the MAC CE, or can be an existing field in the MAC CE, for example, one or more bits in a reserved field in the MAC CE are set as the second field, and the present application does not limit this.

[0226] For example, when the MAC CE signaling includes one second field, the MAC CE can be as shown in Table 1.

[0227] In S142, the terminal device receives the RRC signaling and the MAC CE signaling, and determines, based on the RRC signaling and the MAC CE, that the data transmission scheme is the first transmission scheme.

[0228] Specifically, after receiving the RRC signaling, the terminal device can determine the data transmission scheme according to the value option of the RRC signaling. Specifically, when the value option of the RRC signaling is the first option, for example, the value option of the RRC signaling is enabled or 1, the terminal device determines that the data transmission scheme thereof is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission.

[0229] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme or the second transmission scheme according to the TCI state field carried in the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus can correctly receive and demodulate the signal.

[0230] In the embodiment of the present application, the terminal device receives the RRC signaling and the MAC CE signaling sent by the network device, determines the data transmission scheme thereof as the coherent joint transmission scheme when the value option of the RRC signaling is the first option, and provides a technical scheme for determining the transmission scheme of the terminal device. Moreover, when the MAC CE is used to configure the TCI state of the control resource set CORESET, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0231] Embodiment Thirteen

[0232] Please refer to Figure 15 , Figure 15 Another method for determining the transmission scheme provided in the embodiment of the present application is shown in the flowchart. The method is applied to the wireless communication system as shown in Figure 1 . As shown in Figure 15 , the method comprises the following steps.

[0233] S151, the network device sends radio resource control RRC signaling and medium access control control element MAC CE signaling, the RRC signaling is used to indicate that the data transmission scheme of the terminal device is the first transmission scheme and / or the second transmission scheme, the first transmission scheme is the coherent joint transmission scheme, the MAC CE signaling is used to configure the TCI state of the control resource set CORESET, and the MAC CE signaling comprises at least three TCI state fields.

[0234] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through RRC signaling. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the sending of MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus correctly receive and demodulate the signal.

[0235] The name of the RRC signaling is repetitionScheme-r18, which can be used to indicate the first transmission scheme and / or the second transmission scheme, and the value options of the RRC signaling can be {fdmSchemeA, fdmSchemeB, tdmSchemeA, cjtScheme}. Wherein cjtScheme represents a coherent joint transmission scheme, and when the value option of the RRC signaling is cjtScheme, it means that the network device configures the first transmission scheme, and the first transmission scheme is enabled, i.e., the terminal device can use the first transmission scheme for data transmission. Any one of fdmSchemeA, fdmSchemeB, and tdmSchemeA represents the second transmission scheme, and if the value option of the RRC signaling is any one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, it means that the network device configures the second transmission scheme, and the second transmission scheme is enabled, i.e., the terminal device uses the second transmission scheme for data transmission.

[0236] For example, the value options of the RRC signaling can also be represented by other values, for example, the first transmission scheme can be represented by a value option of 0, and when the value option of the RRC signaling is 0, it means that the network device configures the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme; the second transmission scheme can be represented by a value option of non-0, and when the value option of the RRC signaling is 1, 2, or 3, it means that the network device configures the second transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the second transmission scheme. The embodiments of the present application do not make a limitation.

[0237] When the MAC CE is used to configure the TCI state of the control resource set CORESET, the MAC CE can be associated with at least 3 TCI state fields.

[0238] Optionally, the MAC CE signaling includes one or more second fields, the second fields being used to indicate whether the TCI state field is included in a first byte, the first byte being a next byte of a byte where the second field is located.

[0239] Optionally, the MAC CE signaling includes one or more second fields, the second fields being used to indicate whether a first byte exists, the first byte being a next byte of a byte where the second field is located.

[0240] Optionally, the MAC CE signaling includes one or more second fields, the second fields being used to indicate whether the TCI state field is included in a first byte, the first byte being a next byte of a byte where the second field is located.

[0241] Further, the second field can be 1 bit. For example, when the second field takes a value of 0, the first field can be used to indicate that the TCI state field is included in the first byte; when the second field takes a value of 1, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist. For another example, when the second field takes a value of 1, the second field can be used to indicate that the TCI state field is included in the first byte, or the second field can be used to indicate that the first byte exists; when the second field takes a value of 0, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0242] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc., and the present application does not limit the way of indicating whether the TCI state field is included in the first byte according to different values.

[0243] It should be noted that the second field can be an additional field newly added in the MAC CE, or can be an existing field in the MAC CE, such as setting one or more bits in a reserved field in the MAC CE as the second field, and the present application does not limit this.

[0244] For example, when the MAC CE signaling includes one second field, the MAC CE can be as shown in Table 1 above.

[0245] S152, the terminal device receives the RRC signaling and the MAC CE signaling, and determines, based on the RRC signaling and the MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0246] Specifically, after receiving the RRC signaling, the terminal device can determine the data transmission scheme according to the value option of the RRC signaling. Specifically, when the value option of the RRC signaling is the second option, for example, the value option of the RRC signaling is cjtScheme or 0, the terminal device determines that its data transmission scheme is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission. When the value option of the RRC signaling is the third option, for example, the value option of the RRC signaling is at least one of fdmSchemeA, fdmSchemeB, tdmSchemeA, or at least one of 1, 2, 3, the terminal device determines that its data transmission scheme is the second transmission scheme, and the terminal device can use frequency division multiplexing and / or time division multiplexing in multi-site non-coherent joint transmission to perform data reception and / or transmission.

[0247] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme or the second transmission scheme according to the TCI state field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna port in the first transmission scheme, and further being able to correctly receive and demodulate the signal.

[0248] In the embodiments of the present application, the terminal device receives the RRC signaling and the MAC CE signaling sent by the network device, determines that its data transmission scheme is the first transmission scheme and / or the second transmission scheme according to the value option of the RRC signaling, and provides a technical scheme for determining the transmission scheme of the terminal device. And when the MAC CE is used to configure the TCIstate of the control resource set CORESET, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, thereby being able to correctly receive and demodulate the signal.

[0249] Embodiment fourteen

[0250] Please refer to Figure 16 , Figure 16 Another flowchart of a method for determining a transmission scheme provided by the embodiments of the present application is applied to a wireless communication system as shown in Figure 1 As shown in Figure 16 , the method comprises the following steps.

[0251] S161、network equipment sends downlink control information DCI and medium access control control element MAC CE signaling, the DCI includes a first field, the first field is used to indicate the first transmission scheme and / or the second transmission scheme, the first transmission scheme is a coherent joint transmission scheme, the MAC CE signaling is used to configure the TCI state of the control resource set CORESET, and the MAC CE signaling includes at least three TCI state fields.

[0252] In the embodiment of the application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the DCI. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and then correctly receive and demodulate the signal.

[0253] Among them, the network equipment defines a first field in the DCI, which is used to indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme. The first field can be 1 bit, which can be an additional 1 bit added in the DCI, or can be an existing 1 bit in the DCI, such as setting the 1 bit in the reserved field in the DCI as the first field, and the embodiment of the application does not limit this.

[0254] For example, when the first field takes a first value, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a second value, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the first field takes a value of 0, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a value of 1, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the first field takes a value of 1, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a value of 0, the first field can be used to indicate that the data transmission scheme is the second transmission scheme.

[0255] It should be noted that the first field in the present application can also be 2 bits, 3 bits, 4 bits, etc. The embodiments of the present application do not limit the way of indicating the data transmission scheme as the first transmission scheme and / or the second transmission scheme according to different values.

[0256] In the case that the MAC CE is used to configure the TCI state of the control resource set CORESET, the MAC CE can be associated with at least 3 TCI state fields.

[0257] Optionally, the MAC CE signaling includes one or more second fields, and the second fields are used to indicate whether the TCI state field is included in the first byte, the first byte being the next byte of the byte where the second field is located.

[0258] Optionally, the MAC CE signaling includes one or more second fields, and the second fields are used to indicate whether the first byte exists, the first byte being the next byte of the byte where the second field is located.

[0259] In the case that the second field takes the first value, the second field can be used to indicate that the TCI state field is included in the first byte; in the case that the second field takes the second value, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0260] Further, the second field can be 1 bit. For example, in the case that the second field takes the value 0, the first field can be used to indicate that the TCI state field is included in the first byte; in the case that the second field takes the value 1, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist. For another example, in the case that the second field takes the value 1, the second field can be used to indicate that the TCI state field is included in the first byte, or the second field can be used to indicate that the first byte exists; in the case that the second field takes the value 0, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0261] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc., and the present application embodiments do not limit the way of indicating whether the TCI state field is included in the first byte according to different values.

[0262] It should be noted that the second field can be an additional field newly added in the MAC CE, or can be an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set as the second field, and the present application embodiments do not limit this.

[0263] For example, the MAC CE signaling includes one second field, and the MAC CE can be as shown in Table 1.

[0264] S162, the terminal device receives the DCI and the MAC CE signaling, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme based on the DCI and the MAC CE.

[0265] Specifically, after receiving the DCI, the terminal device can determine its data transmission scheme according to the first field in the DCI. Specifically, when the first field indicates the first transmission scheme, the terminal device determines its data transmission scheme to be the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission. When the first field indicates the second transmission scheme, the terminal device determines its data transmission scheme to be the second transmission scheme, and the terminal device can use frequency division multiplexing and / or time division multiplexing in multi-site non-coherent joint transmission to perform data reception and / or transmission.

[0266] For example, when the value of the first field in the DCI is 1, indicating the first transmission scheme, the terminal device determines its data transmission scheme to be the coherent joint transmission scheme; when the value of the first field in the DCI is 0, indicating the second transmission scheme, the terminal device determines its data transmission scheme to be the frequency division multiplexing and / or time division multiplexing transmission scheme.

[0267] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna port in the first transmission scheme, and thus being able to correctly receive and demodulate the signal.

[0268] In the embodiments of the present application, the terminal device receives the RRC signaling and the MAC CE signaling sent by the network device, determines its data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to the first field in the DCI, and provides a technical scheme for determining the transmission scheme of the terminal device. And when the MAC CE is used to configure the TCI state of the control resource set CORESET, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, thereby being able to correctly receive and demodulate the signal.

[0269] Embodiment fifteen

[0270] Please refer to Figure 17 , Figure 17 Another method for determining the transmission scheme provided by the embodiments of the present application is shown in the flowchart. The method is applied to a wireless communication system as shown in Figure 1 The method includes the following steps. Figure 17

[0271] ​S171、network equipment sends downlink control information DCI and medium access control control element MAC CE signaling, the DCI includes transmission configuration indication state TCI state, the TCI state is indicated by TCI field in the DCI, the MAC CE signaling is used to configure the TCI state of control resource set CORESET, and the MAC CE signaling includes at least three TCI state fields.

[0272] In the embodiment of the application, the network device can indicate the terminal device to use the first transmission scheme and / or the second transmission scheme by the TCI state indicated by the DCI. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration by sending the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and then correctly receive and demodulate the signal.

[0273] Among them, the TCI field in the DCI can indicate one or more TCI states, and the network device can indicate the data transmission scheme used by the terminal device according to the number of TCI states.

[0274] Among them, when the MAC CE is used to configure the TCI state of the control resource set CORESET, the MAC CE can be associated with at least three TCI state fields.

[0275] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the TCI state field is included in the first byte, and the first byte is the next byte of the byte where the second field is located.

[0276] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the first byte exists, and the first byte is the next byte of the byte where the second field is located.

[0277] Among them, when the second field takes the first value, the second field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the second value, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0278] Further, the second field can be 1 bit. For example, when the second field takes a value of 0, the first field can be used to indicate that the TCI state field is included in the first byte; when the second field takes a value of 1, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist. For another example, when the second field takes a value of 1, the second field can be used to indicate that the TCI state field is included in the first byte, or the second field can be used to indicate that the first byte exists; when the second field takes a value of 0, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0279] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc., and the present application does not limit the manner of indicating whether the TCI state field is included in the first byte according to different values.

[0280] It should be noted that the second field can be an additional field newly added in the MAC CE, or an existing field in the MAC CE, such as setting one or more bits in the reserved field in the MAC CE as the second field, and the present application does not limit this.

[0281] For example, when the MAC CE signaling includes a second field, the MAC CE can be as shown in Table 1 above.

[0282] S172, the terminal device receives the DCI and the MAC CE signaling, and determines, based on the RRC signaling and the MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme, the first transmission scheme being a coherent joint transmission scheme.

[0283] The terminal device can determine whether to use the first transmission scheme for data transmission or use the second transmission scheme for data transmission according to the number of TCI states indicated by the DCI after receiving the DCI.

[0284] In the present application, the terminal device determines the data transmission scheme to be the first transmission scheme or the second transmission scheme according to the number of transmission configuration indication states TCI states indicated by the TCI field in the DCI, comprising: when the number of TCI states indicated by the DCI is greater than or equal to a first threshold, the terminal device determines the data transmission scheme to be the first transmission scheme; when the number of TCI states indicated by the DCI is less than the first threshold, the terminal device determines the data transmission scheme to be the second transmission scheme.

[0285] Specifically, the coherent joint transmission scheme can be associated with at least two TCI states, and the first threshold can be 2. Therefore, when the number of TCI states indicated by the DCI is greater than or equal to 2, the terminal device can determine that its data transmission scheme is the first transmission scheme, which can use a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme for data reception and transmission. When the number of TCI states indicated by the DCI is less than 2, the terminal device determines that its data transmission scheme is the second transmission scheme, which can use frequency division multiplexing and / or time division multiplexing in multi-site non-coherent joint transmission for data reception and / or transmission.

[0286] For example, when the value of the first field in the DCI is 1, indicating the first transmission scheme, the terminal device determines that its data transmission scheme is the coherent joint transmission scheme; when the value of the first field in the DCI is 0, indicating the second transmission scheme, the terminal device determines that its data transmission scheme is the frequency division multiplexing and / or time division multiplexing transmission scheme.

[0287] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna port in the first transmission scheme, and thus being able to correctly receive and demodulate the signal.

[0288] In the embodiments of the present application, the terminal device receives the DCI and the MAC CE signaling sent by the network device, determines that its data transmission scheme is the first transmission scheme and / or the second transmission scheme according to the number of TCI states indicated by the DCI, and provides a technical scheme for determining the transmission scheme of the terminal device. And when the MAC CE is used to configure the TCI state of the control resource set CORESET, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, thereby being able to correctly receive and demodulate the signal.

[0289] Embodiment sixteen

[0290] Please refer to Figure 18 , Figure 18 Another transmission scheme determination method flowchart provided by the embodiments of the present application is applied to a wireless communication system as shown in Figure 1 , as shown in Figure 18 , the method comprises the following steps.

[0291] S181. The network device sends radio resource control (RRC) signaling and medium access control (MAC) control element (CE) signaling, where the RRC signaling is used to indicate that the data transmission scheme of the terminal device is a first transmission scheme, the first transmission scheme is a coherent joint transmission scheme, the MAC CE signaling is used to configure a TCI state of a physical downlink shared channel (PDSCH), and an i-th code point in a TCI field in the DCI indicates that the MAC CE includes at least three TCI state fields, where i is an integer.

[0292] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the coherent joint transmission scheme through RRC signaling, and the RRC signaling can be used only to indicate the first transmission scheme. The network device can also indicate the TCI state configuration through the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus correctly receive and demodulate the signal.

[0293] The RRC signaling can be used to indicate the coherent joint transmission, and the value options are {enabled, disabled}. When the value option of the RRC signaling is enabled, it indicates that the network device configures the first transmission scheme, and the first transmission scheme is enabled; that is, the terminal device uses the first transmission scheme for data transmission. If the value option of the RRC signaling is disabled, it indicates that the network device does not configure the first transmission scheme, and the first transmission scheme is not enabled; that is, the terminal device does not use the first transmission scheme for data transmission.

[0294] For example, the value options of the RRC signaling can also be represented by other values, for example, when the value option of the RRC signaling is 1, it indicates that the network device configures the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme; when the value option of the RRC signaling is 0, it indicates that the network device does not configure the first transmission scheme, and the RRC signaling is used to indicate that the terminal device does not use the first transmission scheme. The embodiments of the present application do not make a limitation in this regard.

[0295] When the MAC CE is used to configure the TCI state of the PDSCH, and the i-th code point in the TCI field in the DCI indicates at least three TCI state fields, the TCI state configuration corresponding to the i-th code point in the TCI field in the DCI in the MAC CE can include at least three TCI state fields, where i is the index of the code point in the TCI field in the DCI. According to the TCI state field carried in the MAC CE, the terminal device can determine the QCL relationship of the antenna port, so as to correctly receive and demodulate the signal.

[0296] Optionally, the MAC CE signaling includes one or more second fields, the second fields being used to indicate whether the TCI state field is included in a first byte, the first byte being a next byte of a byte where the second field is located.

[0297] Optionally, the MAC CE signaling includes one or more second fields, the second fields being used to indicate whether the TCI state field is included in a first byte, the first byte being a next byte of a byte where the second field is located.

[0298] wherein, when the second field takes a first value, the second field can be used to indicate that the TCI state field is included in the first byte; and when the second field takes a second value, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0299] Further, the second field can be 1 bit. For example, when the second field takes a value of 0, the first field can be used to indicate that the TCI state field is included in the first byte; and when the second field takes a value of 1, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist. For another example, when the second field takes a value of 1, the second field can be used to indicate that the TCI state field is included in the first byte; and when the second field takes a value of 0, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0300] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc., and the present application embodiments do not limit the way of indicating whether the TCI state field is included in the first byte according to different values.

[0301] It should be noted that the second field can be an additional field newly added in the MAC CE, or can be an existing field in the MAC CE, such as setting one or more bits in a reserved field in the MAC CE as the second field, and the present application embodiments do not limit this.

[0302] For example, when the MAC CE signaling includes multiple second fields, the MAC CE can be as shown in Table 2 above.

[0303] S182, the terminal device receives the RRC signaling and the MAC CE signaling, and determines, based on the RRC signaling and the MAC CE, that the data transmission scheme is the first transmission scheme.

[0304] Specifically, after receiving the RRC signaling, the terminal device can determine the data transmission scheme according to the value option of the RRC signaling. Specifically, when the value option of the RRC signaling is the first option, for example, the value option of the RRC signaling is enabled or 1, the terminal device determines that the data transmission scheme thereof is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission.

[0305] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus can correctly receive and demodulate the signal.

[0306] In the embodiment of the present application, the terminal device receives the RRC signaling and the MAC CE signaling sent by the network device, determines the data transmission scheme thereof as the coherent joint transmission scheme when the value option of the RRC signaling is the first option, and provides a technical scheme for determining the transmission scheme of the terminal device. Moreover, when the MAC CE is used for the TCI state of the PDSCH, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0307] Embodiment seventeen

[0308] Please refer to Figure 19 , Figure 19 Another method for determining the transmission scheme provided in the embodiment of the present application is shown in the flowchart. The method is applied to the wireless communication system as shown in Figure 1 The method includes the following steps. Figure 19

[0309] S191, the network device sends radio resource control (RRC) signaling and media access control (MAC) control element (CE) signaling, the RRC signaling is used to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, the first transmission scheme is a coherent joint transmission scheme, the MAC CE signaling is used to configure the TCI state of the physical downlink shared channel (PDSCH), and the i-th code point in the TCI field in the DCI indicates that the MAC CE includes at least three TCI state fields, and the i is an integer.

[0310] ​In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through RRC signaling. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the sending of MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and thus the signal can be correctly received and demodulated.

[0311] The name of the RRC signaling is repetitionScheme-r18, which can be used to indicate the first transmission scheme and / or the second transmission scheme, and the value options of the RRC signaling can be {fdmSchemeA, fdmSchemeB, tdmSchemeA, cjtScheme}. The cjtScheme represents a coherent joint transmission scheme. When the value option of the RRC signaling is cjtScheme, it means that the network device configures the first transmission scheme, and the first transmission scheme is enabled, i.e., the terminal device can use the first transmission scheme for data transmission. Any one of fdmSchemeA, fdmSchemeB, and tdmSchemeA represents the second transmission scheme. If the value option of the RRC signaling is any one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, it means that the network device configures the second transmission scheme, and the second transmission scheme is enabled, i.e., the terminal device uses the second transmission scheme for data transmission.

[0312] For example, the value option of the RRC signaling can also be represented by other values. For example, the first transmission scheme can be represented by a value option of 0. When the value option of the RRC signaling is 0, it means that the network device configures the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme. The second transmission scheme can be represented by a value option of non-0. When the value option of the RRC signaling is 1, 2, or 3, it means that the network device configures the second transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the second transmission scheme. The embodiments of the present application are not limited in this regard.

[0313] When the MAC CE is used to configure the TCI state of the PDSCH, and the i th code point in the TCI field in the DCI indicates at least 3 TCI state fields, the MAC CE corresponding to the TCI state indicated by the i th code point in the TCI field in the DCI can include at least 3 TCI state fields, where i is the index of the code point in the TCI field in the DCI. According to the TCI state field carried in the MAC CE, the terminal device can determine the QCL relationship of the antenna port, so as to correctly receive and demodulate the signal.

[0314] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the TCI state field is included in the first byte, where the first byte is the next byte of the byte where the second field is located.

[0315] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the TCI state field is included in the first byte, where the first byte is the next byte of the byte where the second field is located.

[0316] When the second field takes the first value, the second field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the second value, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0317] Further, the second field can be 1 bit. For example, when the second field takes the value 0, the first field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the value 1, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist. For another example, when the second field takes the value 1, the second field can be used to indicate that the TCI state field is included in the first byte; when the second field takes the value 0, the second field can be used to indicate that the TCI state field is not included in the first byte, or the second field can be used to indicate that the first byte does not exist.

[0318] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc. The present application does not limit the way of indicating whether the TCI state field is included in the first byte according to different values.

[0319] It should be noted that the second field can be an additional field newly added in the MAC CE, or an existing field in the MAC CE, such as setting one or more bits in the reserved field in the MAC CE as the second field, and the embodiments of the present application do not limit this.

[0320] For example, when the MAC CE signaling includes multiple second fields, the MAC CE can be as shown in Table 2 above.

[0321] In S192, the terminal device receives the RRC signaling and the MAC CE signaling, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme based on the RRC signaling and the MAC CE.

[0322] Specifically, after receiving the RRC signaling, the terminal device can determine the data transmission scheme according to the value option of the RRC signaling. Specifically, when the value option of the RRC signaling is the second option, for example, the value option of the RRC signaling is cjtScheme or 0, the terminal device determines that the data transmission scheme thereof is the first transmission scheme, that is, the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission. When the value option of the RRC signaling is the third option, for example, the value option of the RRC signaling is at least one of fdmSchemeA, fdmSchemeB, tdmSchemeA, or at least one of 1, 2, 3, the terminal device determines that the data transmission scheme thereof is the second transmission scheme, and the terminal device can use the frequency division multiplexing and / or the time division multiplexing in the multi-site non-coherent joint transmission to perform data reception and / or transmission.

[0323] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna port in the first transmission scheme, and further being able to correctly receive and demodulate the signal.

[0324] In the embodiments of the present application, the terminal device receives the RRC signaling and the MAC CE signaling sent by the network device, determines the data transmission scheme thereof to be the first transmission scheme and / or the second transmission scheme according to the value option of the RRC signaling, and provides a technical scheme for determining the transmission scheme of the terminal device. Moreover, when the MAC CE is used for the TCI state of the PDSCH, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, thereby being able to correctly receive and demodulate the signal.

[0325] Embodiment eighteen

[0326] Please refer to Figure 20 ,Figure 20 Another determination method flowchart of a transmission scheme provided by an embodiment of the present application is applied to a wireless communication system as shown in Figure 1 Figure 20 The method includes the following steps.

[0327] S201, a network device sends downlink control information DCI and medium access control control element MAC CE signaling, the DCI includes a first field, the first field is used to indicate a first transmission scheme and / or a second transmission scheme, the first transmission scheme is a coherent joint transmission scheme, the MAC CE signaling is used to configure a TCI state of a physical downlink shared channel PDSCH, and an i-th code point in a TCI field in the DCI indicates that the MAC CE includes at least three TCI state fields, the i is an integer.

[0328] In the embodiment of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the DCI. The first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and then correctly receive and demodulate the signal.

[0329] Among them, the network device newly defines a first field in the DCI, and the first field is used to indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme. The first field can be 1 bit, which can be an additional 1 bit newly added in the DCI, or can be an existing 1 bit in the DCI, such as setting the 1 bit in the reserved field in the DCI as the first field, and the embodiment of the present application does not limit this.

[0330] For example, when the first field takes a first value, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a second value, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the first field takes a value of 0, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a value of 1, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the first field takes a value of 1, the first field can be used to indicate that the data transmission scheme is the first transmission scheme; when the first field takes a value of 0, the first field can be used to indicate that the data transmission scheme is the second transmission scheme. ​

[0331] It should be noted that the first field in the present application can also be 2 bits, 3 bits, 4 bits, etc. The present application does not limit the manner of indicating the data transmission scheme as the first transmission scheme and / or the second transmission scheme according to different values.

[0332] In the case that the MAC CE is used to configure the TCI state of the PDSCH, when the i-th code point in the TCI field in the DCI indicates at least 3 TCI state fields, the MAC CE corresponding to the TCI state indicated by the i-th code point in the TCI field in the DCI can include at least 3 TCI state fields, and i is the index of the code point in the TCI field in the DCI. According to the TCI state field carried in the MAC CE, the terminal device can determine the QCL relationship of the antenna port, so as to correctly receive and demodulate the signal.

[0333] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the TCI state field is included in the first byte, and the first byte is the next byte of the byte where the second field is located.

[0334] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the first byte exists, and the first byte is the next byte of the byte where the second field is located.

[0335] In the case that the second field takes the first value, the second field can be used to indicate that the first byte includes the TCI state field; in the case that the second field takes the second value, the second field can be used to indicate that the first byte does not include the TCI state field, or the second field can be used to indicate that the first byte does not exist.

[0336] Further, the second field can be 1 bit. For example, in the case that the second field takes the value 0, the first field can be used to indicate that the first byte includes the TCI state field; in the case that the second field takes the value 1, the second field can be used to indicate that the first byte does not include the TCI state field, or the second field can be used to indicate that the first byte does not exist. For another example, in the case that the second field takes the value 1, the second field can be used to indicate that the first byte includes the TCI state field; in the case that the second field takes the value 0, the second field can be used to indicate that the first byte does not include the TCI state field, or the second field can be used to indicate that the first byte does not exist.

[0337] For example, the second field in this application can also be 2 bits, 3 bits, 4 bits, etc. The embodiments of this application do not limit the way of indicating whether the TCI state field is included in the first byte according to different values.

[0338] It should be noted that the second field can be an additional field newly added in the MAC CE, or an existing field in the MAC CE, such as setting one or more bits in the reserved field in the MAC CE as the second field. The embodiments of this application do not limit this.

[0339] For example, when the MAC CE signaling includes multiple second fields, the MAC CE can be as shown in Table 2 above.

[0340] S202, the terminal device receives the DCI and the MAC CE signaling, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme based on the DCI and the MAC CE.

[0341] Specifically, after receiving the DCI, the terminal device can determine its data transmission scheme according to the first field in the DCI. Specifically, when the first field indicates the first transmission scheme, the terminal device determines its data transmission scheme to be the first transmission scheme, i.e., the terminal device can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission. When the first field indicates the second transmission scheme, the terminal device determines its data transmission scheme to be the second transmission scheme, and the terminal device can use frequency division multiplexing and / or time division multiplexing in multi-site non-coherent joint transmission to perform data reception and / or transmission.

[0342] For example, when the value of the first field in the DCI is 1, indicating the first transmission scheme, the terminal device determines its data transmission scheme to be the coherent joint transmission scheme; when the value of the first field in the DCI is 0, indicating the second transmission scheme, the terminal device determines its data transmission scheme to be the frequency division multiplexing and / or time division multiplexing transmission scheme.

[0343] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna port in the first transmission scheme, and thus being able to correctly receive and demodulate the signal.

[0344] In the embodiments of the present application, the terminal device receives the RRC signaling and the MAC CE signaling sent by the network device, determines the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme according to the first field in the DCI, and provides a technical scheme for determining the transmission scheme of the terminal device. Moreover, when the MAC CE is used for the TCI state of the PDSCH, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0345] Embodiment nineteen

[0346] Please refer to Figure 21 , Figure 21 Another flowchart of a method for determining a transmission scheme provided in the embodiments of the present application is applied to a wireless communication system as shown in Figure 1 The method includes the following steps as shown in Figure 21

[0347] S211, the network device sends downlink control information DCI and media access control control element MAC CE signaling, the DCI includes transmission configuration indication state TCI state, the TCI state is indicated by the TCI field in the DCI, the MAC CE signaling is used for configuring the TCI state of the physical downlink shared channel PDSCH, and the i-th code point in the TCI field in the DCI indicates that the MAC CE includes at least three TCI state fields, and the i is an integer.

[0348] In the embodiments of the present application, the network device can indicate the data transmission scheme of the terminal device as the first transmission scheme and / or the second transmission scheme through the TCI state indicated by the DCI, the first transmission scheme is a coherent joint transmission scheme, the first transmission scheme is different from the second transmission scheme, and the second transmission scheme can include a multi-site non-coherent joint transmission FDM transmission scheme and a multi-site non-coherent joint transmission TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc. At the same time, the network device can indicate the TCI state configuration through the sending of the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and then correctly receive and demodulate the signal.

[0349] Among them, the TCI field in the DCI can indicate one or more TCI states, and the network device can indicate the data transmission scheme used by the terminal device according to the number of TCI states.

[0350] ​When the MAC CE is used to configure the TCI state of the PDSCH, and the i th code point in the TCI field in the DCI indicates at least 3 TCI state fields, the MAC CE corresponding to the TCI state indicated by the i th code point in the TCI field in the DCI can include at least 3 TCI state fields, where i is the index of the code point in the TCI field in the DCI. According to the TCI state field indicated by the MAC CE, the terminal device can determine the QCL relationship of the antenna port, so as to correctly receive and demodulate the signal.

[0351] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the TCI state field is included in the first byte, where the first byte is the next byte of the byte where the second field is located.

[0352] Optionally, the MAC CE signaling includes one or more second fields, and the second field is used to indicate whether the first byte exists, where the first byte is the next byte of the byte where the second field is located.

[0353] When the second field takes the first value, the second field can be used to indicate that the first byte includes the TCI state field; when the second field takes the second value, the second field can be used to indicate that the first byte does not include the TCI state field, or the second field can be used to indicate that the first byte does not exist.

[0354] Further, the second field can be 1 bit. For example, when the second field takes the value 0, the first field can be used to indicate that the first byte includes the TCI state field; when the second field takes the value 1, the second field can be used to indicate that the first byte does not include the TCI state field, or the second field can be used to indicate that the first byte does not exist. For another example, when the second field takes the value 1, the second field can be used to indicate that the first byte includes the TCI state field; when the second field takes the value 0, the second field can be used to indicate that the first byte does not include the TCI state field, or the second field can be used to indicate that the first byte does not exist.

[0355] For example, the second field in the present application can also be 2 bits, 3 bits, 4 bits, etc. The present application does not limit the way of indicating whether the first byte includes the TCI state field according to different values.

[0356] It should be noted that the second field can be an additional field newly added in the MAC CE, or can be an existing field in the MAC CE, such as setting one or more bits in the reserved field in the MAC CE as the second field, and the embodiments of the present application do not limit this.

[0357] For example, when the MAC CE signaling includes multiple second fields, the MAC CE can be as shown in Table 2.

[0358] In S212, the terminal device receives the DCI and the MAC CE signaling, and determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme based on the DCI and the MAC CE.

[0359] After receiving the DCI, the terminal device can determine whether to use the first transmission scheme or the second transmission scheme for data transmission according to the number of TCI states indicated by the DCI.

[0360] In the embodiments of the present application, the terminal device determines the data transmission scheme to be the first transmission scheme or the second transmission scheme according to the number of transmission configuration indication states TCI states indicated by the TCI field in the DCI, including: when the number of TCI states indicated by the DCI is greater than or equal to a first threshold, the terminal device determines the data transmission scheme to be the first transmission scheme; and when the number of TCI states indicated by the DCI is less than the first threshold, the terminal device determines the data transmission scheme to be the second transmission scheme.

[0361] Specifically, the coherent joint transmission scheme can be associated with at least two TCI states, and the first threshold can be 2. Therefore, when the number of TCI states indicated by the DCI is greater than or equal to 2, the terminal device can determine that the data transmission scheme is the first transmission scheme, which can use the downlink coherent joint transmission scheme and / or the uplink coherent joint reception scheme to perform data reception and transmission. When the number of TCI states indicated by the DCI is less than 2, the terminal device determines that the data transmission scheme is the second transmission scheme, which can use frequency division multiplexing and / or time division multiplexing in multi-site non-coherent joint transmission to perform data reception and / or transmission.

[0362] For example, when the value of the first field in the DCI is 1, indicating the first transmission scheme, the terminal device determines that the data transmission scheme is the coherent joint transmission scheme; and when the value of the first field in the DCI is 0, indicating the second transmission scheme, the terminal device determines that the data transmission scheme is the frequency division multiplexing and / or time division multiplexing transmission scheme.

[0363] Further, after receiving the MAC CE signaling, the terminal device determines the TCI state configuration of the first transmission scheme according to the TCI state field carried in the MAC CE signaling, so as to determine the QCL relationship of the antenna port in the first transmission scheme, and then correctly receive and demodulate the signal.

[0364] In the embodiments of the present application, the terminal device receives the DCI and the MAC CE signaling sent by the network device, determines the data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to the number of TCI states indicated by the DCI, and provides a technical solution for determining the transmission scheme of the terminal device. And when the MAC CE is used for the TCI state of the PDSCH, the terminal device can determine the QCL relationship of the antenna port according to the TCI state field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0365] The above mainly introduces the scheme of the embodiments of the present application from the perspective of the execution process of the method side. It can be understood that, in order to implement the above functions, the network device comprises the hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the unit and algorithm steps of each example described in the embodiments provided in the present application, the present application can be realized in the form of hardware or the combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0366] Please refer to Figure 22 , Figure 22 is a functional unit composition block diagram of a transmission scheme determination apparatus 2200 provided by the embodiments of the present application. The apparatus 2200 is also applied to the terminal device, and the apparatus 2200 can also be applied to the network device. The apparatus 2200 comprises a transceiver unit 2210 and a processing unit 2220.

[0367] In a possible implementation manner, the apparatus 2200 is configured to execute the corresponding processes and steps of the terminal device in the above indication method.

[0368] The transceiver unit 2210 is configured to receive a first message.

[0369] The processing unit 2220 is configured to determine a data transmission scheme based on the first message, wherein the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0370] Optionally, the first message comprises at least one of the following: radio resource control (RRC) signaling, medium access control (MAC) signaling, and downlink control information (DCI).

[0371] Optionally, the first message is the RRC signaling, and the processing unit 2220 is specifically configured to determine the data transmission scheme as the first transmission scheme when a value option of the RRC signaling is a first option.

[0372] Optionally, the data transmission scheme further comprises a second transmission scheme.

[0373] Optionally, the processing unit 2220 is specifically configured to determine the data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the value option of the RRC signaling.

[0374] Optionally, the first message is the DCI, and the DCI comprises a first field used to indicate the first transmission scheme and / or the second transmission scheme.

[0375] Optionally, the processing unit 2220 is specifically configured to determine the data transmission scheme as the first transmission scheme and / or the second transmission scheme according to a value of the first field.

[0376] Optionally, the first message is the DCI.

[0377] In the determination of the data transmission scheme based on the first message, the processing unit 2220 is specifically configured to determine the data transmission scheme as the first transmission scheme or the second transmission scheme according to a number of transmission configuration indication (TCI) states indicated by the DCI.

[0378] Optionally, in the determination of the data transmission scheme as the first transmission scheme or the second transmission scheme according to the number of TCI states indicated by the DCI, the processing unit 2220 is specifically configured to determine the data transmission scheme as the first transmission scheme when the number of TCI states indicated by the DCI is greater than or equal to a first threshold, and determine the data transmission scheme as the second transmission scheme when the number of TCI states indicated by the DCI is less than the first threshold.

[0379] Optionally, the first transmission scheme is associated with at least two TCI states.

[0380] Optionally, the first message is MAC CE signaling, and the MAC CE signaling includes at least three TCI state fields.

[0381] Optionally, the first message is MAC CE signaling, and when the MAC CE signaling is used to configure a TCI state of a control resource set CORESET, the MAC CE signaling includes at least three TCI state fields.

[0382] Optionally, the first message is MAC CE signaling, and when the MAC CE signaling is used to configure a TCI state of a physical downlink shared channel PDSCH, an i-th code point in a TCI field in DCI indicates that the MAC CE includes at least three TCI state fields, where i is an integer.

[0383] Optionally, the MAC CE signaling includes one or more second fields, and the second fields are used to indicate whether the TCI state fields are included in a first byte, where the first byte is a next byte of a byte in which the second fields are located.

[0384] Optionally, the first transmission scheme includes a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

[0385] In another possible implementation, the apparatus 2200 is configured to perform the corresponding procedures and steps of the network device in the above indication method.

[0386] The transceiver 2210 is configured to send a first message, where the first message is used to determine a data transmission scheme, and the data transmission scheme includes a first transmission scheme, where the first transmission scheme is a coherent joint transmission scheme.

[0387] Optionally, the first message includes at least one of the following: radio resource control RRC signaling, medium access control MAC signaling, and downlink control information DCI.

[0388] Optionally, the first message is the RRC signaling, and the RRC signaling is used to indicate that the data transmission scheme is the first transmission scheme.

[0389] Optionally, the data transmission scheme further includes a second transmission scheme.

[0390] Optionally, the first message is the RRC signaling, and the RRC signaling is used to indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0391] Optionally, the first message is the DCI, and the DCI includes a first field, where the first field is used to indicate the first transmission scheme and / or the second transmission scheme.

[0392] Optionally, the first message is the DCI, and the DCI includes a transmission configuration indication state (TCI state), where the TCI state is indicated by a TCI field in the DCI.

[0393] Optionally, when a quantity of the TCI states indicated by the DCI is greater than or equal to a first threshold, the data transmission scheme is the first transmission scheme; and when the quantity of the TCI states indicated by the DCI is less than the first threshold, the data transmission scheme is the second transmission scheme.

[0394] Optionally, the first transmission scheme is associated with at least two TCI states.

[0395] Optionally, the first message is a MAC CE signaling, and the MAC CE signaling includes at least three TCI state fields.

[0396] Optionally, the first message is a MAC CE signaling, and when the MAC CE signaling is used to configure a TCI state of a control resource set (CORESET), the MAC CE signaling associated with the at least one control resource set includes at least three TCI state fields.

[0397] Optionally, the first message is a MAC CE signaling, and when the MAC CE signaling is used to configure a TCI state of a physical downlink shared channel (PDSCH), an i-th code point in a TCI field in the DCI indicates that the MAC CE includes at least three TCI state fields, where i is an integer.

[0398] Optionally, the MAC CE signaling includes one or more second fields, where the second fields are used to indicate whether the TCI state fields are included in a first byte, and the first byte is a next byte of a byte where the second fields are located.

[0399] Optionally, the first transmission scheme includes a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

[0400] It should be understood that the apparatus 2200 herein is embodied in the form of functional units. The term "unit" herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (for example, a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combination of logic circuitry and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the apparatus 2200 can be embodied in the terminal device in the above-mentioned embodiments, and the apparatus 2200 can be used to execute the respective processes and / or steps corresponding to the terminal device in the above-mentioned method embodiments. To avoid repetition, details are not described here.

[0401] The apparatus 2200 of each of the above-mentioned schemes has a function of implementing the corresponding steps executed by the terminal device in the above-mentioned methods; the function can be implemented by hardware, or implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit 2210 can be replaced by a transceiver, and the processing unit 2220 can be replaced by a processor, which respectively execute the transceiving operations and related processing operations in each of the method embodiments.

[0402] In the embodiments of the present application, the apparatus 2200 can also be a chip or a chip system, for example, a system on chip (SoC). Correspondingly, the detection unit can be a detection circuit of the chip, which is not limited here.

[0403] Please refer to Figure 23 , Figure 23 is a structural schematic diagram of a terminal device provided by the embodiments of the present application, which comprises one or more processors, one or more memories, one or more communication interfaces, and one or more programs; the one or more programs are stored in the memory and configured to be executed by the one or more processors.

[0404] In a possible implementation, the electronic device is a terminal device, and the above-mentioned program comprises instructions for executing the following steps:

[0405] receiving a first message; determining a data transmission scheme based on the first message, the data transmission scheme comprising a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme.

[0406] In another possible implementation, the electronic device is a network device, and the above-mentioned program comprises instructions for executing the following steps:

[0407] transmit a first message, the first message being used to determine a data transmission scheme, the data transmission scheme comprising a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme.

[0408] All the related content of each scenario involved in the method embodiments described above can be cited to the function description of the corresponding function module, and will not be repeated here.

[0409] It should be understood that the above-mentioned memory can include read-only memory and random access memory, and provide instructions and data to the processor. A part of the memory can also include non-volatile random access memory. For example, the memory can also store device type information.

[0410] In the embodiments of the present application, the processor of the above-mentioned device can be a central processing unit (CPU), and the processor can also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0411] It should be understood that "at least one" involved in the embodiments of the present application refers to one or more, and "multiple" refers to two or more. "And / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents that the associated objects before and after it are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b, or c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0412] In addition, unless otherwise stated, the ordinal numbers "first", "second", etc. mentioned in the embodiments of the present application are used to distinguish a plurality of objects, and are not used to limit the order, time sequence, priority or importance of a plurality of objects. For example, the first information and the second information are only used to distinguish different information, and do not mean that the content, priority, sending order or importance of the two kinds of information are different.

[0413] In the implementation process, each step of the above method can be completed by integrated logic circuit of hardware in the processor or instruction in the form of software. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware processor execution completion, or executed by hardware and software units in the processor. The software unit can be located in a mature storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor executes the instructions in the memory, and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

[0414] The embodiment of the present application also provides a chip, which is used for receiving a first message; the chip is also used for determining a data transmission scheme based on the first message, wherein the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0415] The embodiment of the present application also provides a chip module, comprising a transceiver assembly and a chip, wherein the chip is used for receiving a first message through the transceiver assembly; the chip is used for determining a data transmission scheme based on the first message, wherein the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0416] The embodiment of the present application also provides a chip, which is used for sending a first message, wherein the first message is used for determining a data transmission scheme, the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0417] The embodiment of the present application also provides a chip module, comprising a transceiver assembly and a chip, wherein the chip is used for sending a first message through the transceiver assembly, wherein the first message is used for determining a data transmission scheme, the data transmission scheme comprises a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0418] The embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all steps of any method disclosed in the above method embodiments.

[0419] The embodiment of the present application also provides a computer program product containing instructions, which enables an electronic device to execute part or all steps of any method disclosed in the above method embodiments when the computer program product runs on the electronic device.

[0420] The embodiment of the present application also provides a communication system, comprising the above terminal device and / or the above network device.

[0421] It should be noted that, for the foregoing method embodiments, the sequences of the described actions are not necessarily required to achieve the objects of the application, and certain steps can be performed in other sequences or even concurrently. Additionally, the described embodiments are merely provided as examples, and not all of the actions described are necessarily required to achieve desired results.

[0422] In the above embodiments, the description of each embodiment is focused on different aspects, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0423] In several embodiments provided in the present application, it should be understood that the disclosed apparatus can be implemented in other manners. For example, the described apparatus embodiments are merely schematic. For example, the division of the units is merely a logical function division. There can be another division manner for the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0424] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e. can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

[0425] In addition, each functional unit in the embodiments of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware or software functional units.

[0426] If the above integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable memory. Based on this understanding, the technical solutions of the present application essentially or say the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a memory and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a TRP, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned memory includes: a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0427] A person of ordinary skill in the art can understand that all or part of the steps of the various methods of the above embodiments can be completed by a program instructing relevant hardware, and the program can be stored in a computer readable memory, which can include a flash disk, a ROM, a RAM, a magnetic disk or an optical disk, etc.

[0428] The embodiments of the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those of ordinary skill in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description of the embodiments should not be understood as a limitation of the present application.

Claims

1. A method for determining a transmission scheme, characterized in that, The method comprises: The terminal device receives RRC signaling and MAC CE signaling, the RRC signaling indicates a first transmission scheme, the first transmission scheme is a coherent joint transmission scheme, and the MAC CE signaling indicates a TCI state configuration. The terminal device determines a QCL relationship of an antenna port in the coherent joint transmission scheme according to the TCI state configuration.

2. The method of claim 1, wherein, When a value option of the RRC signaling is a first option, the terminal device determines that a data transmission scheme is the first transmission scheme.

3. The method of claim 2, wherein, The data transmission scheme further comprises a second transmission scheme.

4. The method of claim 3, wherein, The terminal device determines that the data transmission scheme is the first transmission scheme and / or the second transmission scheme according to the value option of the RRC signaling.

5. The method of claim 1, wherein, The first transmission scheme is associated with at least two TCI states.

6. The method of claim 1, wherein, The MAC CE signaling comprises at least three TCI state fields.

7. The method of claim 1, wherein, When the MAC CE signaling is used to configure a TCI state of a control resource set CORESET, the MAC CE signaling comprises at least three TCI state fields.

8. The method of claim 1, wherein, When the MAC CE signaling is used to configure a TCI state of a physical downlink shared channel PDSCH, an i-th code point in a TCI field in DCI indicates that the MAC CE signaling comprises at least three TCI state fields, and the i is an integer.

9. The method according to any one of claims 6-8, characterized in that, The MAC CE signaling comprises one or more second fields, and the second fields are used to indicate whether the TCI state fields are included in a first byte, and the first byte is a next byte of a byte where the second fields are located.

10. The method according to any one of claims 1 to 8, characterized in that, The first transmission scheme comprises a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

11. A method for determining a transmission scheme, characterized in that The method comprises: The network device sends RRC signaling and MAC CE signaling, the RRC signaling indicates a first transmission scheme, the first transmission scheme is a coherent joint transmission scheme, and the MAC CE signaling indicates a TCI state configuration, and the TCI state is used for a terminal device to determine a QCL relationship of an antenna port in the coherent joint transmission scheme.

12. The method of claim 11, wherein, When a value option of the RRC signaling is a first option, the RRC signaling is used to indicate that a data transmission scheme is the first transmission scheme.

13. The method of claim 12, wherein, The data transmission scheme further comprises a second transmission scheme.

14. The method of claim 13, wherein, The value option of the RRC signaling is used to indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

15. The method of claim 11, wherein, The first transmission scheme is associated with at least two TCI states.

16. The method of claim 11, wherein, The MAC CE signaling comprises at least three TCI state fields.

17. The method of claim 11, wherein, When the MAC CE signaling is used to configure a TCI state of a control resource set CORESET, at least one of the control resource sets is associated with the MAC CE signaling comprising at least three TCI state fields.

18. The method of claim 11, wherein, In a case that the MAC CE signaling is used for configuring a TCI state of a physical downlink shared channel (PDSCH), an i-th codepoint in a TCI field in a DCI indicates that the MAC CE signaling includes at least three TCI state fields, where i is an integer.

19. The method according to any one of claims 16-18, characterized by, The MAC CE signaling includes one or more second fields used for indicating whether the TCI state fields are included in a first byte, the first byte being a next byte of a byte where the second fields are located.

20. The method according to any one of claims 11-18, characterized in that, The first transmission scheme includes a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

21. A determination apparatus of a transmission scheme, characterized by, The apparatus includes: a transceiver configured to receive RRC signaling and MAC CE signaling, the MAC CE signaling indicating a TCI state configuration; a processing unit configured to determine a data transmission scheme based on the RRC signaling, the data transmission scheme including a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme, and to determine a QCL relationship of antenna ports in the coherent joint transmission scheme according to the TCI state configuration.

22. A determination apparatus of a transmission scheme, characterized by, The apparatus includes: a transceiver configured to transmit RRC signaling and MAC CE signaling, the RRC signaling indicating a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme, and the MAC CE signaling indicating a TCI state configuration, the TCI state being used by a terminal device to determine a QCL relationship of antenna ports in the coherent joint transmission scheme.

23. A chip module, characterized by The chip is configured to receive, by the transceiver, RRC signaling and MAC CE signaling, the RRC signaling indicating a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme, and the MAC CE signaling indicating a TCI state configuration. The chip is further configured to determine a QCL relationship of antenna ports in the coherent joint transmission scheme according to the TCI state configuration. The chip is configured to transmit, by the transceiver, RRC signaling and MAC CE signaling, the RRC signaling indicating a first transmission scheme, the first transmission scheme being a coherent joint transmission scheme, and the MAC CE signaling indicating a TCI state configuration, the TCI state being used by a terminal device to determine a QCL relationship of antenna ports in the coherent joint transmission scheme.

24. A chip module, characterized by The electronic device includes a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the program including instructions for performing steps in the method of any one of claims 1-10 or any one of claims 11-20. The computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform steps of the method of any one of claims 1-10 or any one of claims 11-20.

25. An electronic device, comprising: ​ 26. A computer-readable storage medium, characterized in that, ​

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