Method and apparatus for determining a transmission scheme

Abstract

In an embodiment of the present application, a method and device for determining a transmission scheme are disclosed. The method includes: a terminal device receives a first message sent from a network device, and determines a data transmission scheme according to the first message. The data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent joint transmission (CJT) scheme. Thus, a technical solution for determining a transmission scheme of a terminal device is provided.

Description

[Technical Field]

[0001] The present application relates to the field of communications technology, and in particular to a method and apparatus for determining a transmission scheme. [Background technology]

[0002] Future communication systems (e.g., Rel-18 (release 18)) are expected to support multi-station coherent joint transmission (CJT). However, the specific method by which terminals acquire the transmission scheme is not clearly specified in the protocol. Therefore, determining the transmission scheme for terminals is an urgent issue. Summary of the Invention

[0003] The embodiments of the present application provide a method and apparatus for determining a transmission scheme, and provide a technical solution for determining the transmission scheme of a terminal device.

[0004] In a first aspect, an embodiment of the present application provides a method for determining a transmission scheme, the method includes: a terminal device receives a first message; the terminal device 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 (CJT) scheme.

[0005] In a second aspect, an embodiment of the present application provides a method for determining a transmission scheme, the method including: a network device sends a first message, the first message is used to determine a data transmission scheme, the data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0006] In a third aspect, an embodiment of the present application provides an apparatus for determining a transmission scheme, the apparatus comprising: a transceiver unit configured to receive a first message; and a processing unit configured to determine a data transmission scheme based on the first message, the data transmission scheme including a first transmission scheme, the first transmission scheme being a coherent cooperative transmission scheme.

[0007] In a fourth aspect, an embodiment of the present application provides an apparatus for determining a transmission scheme, the apparatus comprising: a transceiver unit configured to transmit a first message, the first message being used to determine a data transmission scheme, the data transmission scheme including a first transmission scheme, the first transmission scheme being a coherent cooperative transmission scheme.

[0008] In a fifth aspect, an embodiment of the present application provides a chip, the chip is configured to receive a first message, the chip is further configured to determine 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.

[0009] In a sixth aspect, an embodiment of the present application provides a chip module, the chip module comprising: a transceiver component and a chip, the chip configured to receive a first message through the transceiver component, the chip further configured to determine a data transmission scheme based on the first message, the data transmission scheme including a first transmission scheme, and the first transmission scheme being a coherent cooperative transmission scheme.

[0010] In a seventh aspect, an embodiment of the present application provides a chip, the chip is configured to transmit a first message, the first message is used to determine a data transmission scheme, the data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent cooperative transmission scheme.

[0011] In an eighth aspect, an embodiment of the present application provides a chip module, the chip module including a transceiver component and a chip, the chip being configured to transmit a first message through the transceiver component, the first message being used to determine a data transmission scheme, the data transmission scheme including a first transmission scheme, and the first transmission scheme being a coherent cooperative transmission scheme.

[0012] In a ninth aspect, an embodiment of the present application provides an electronic device, the 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, the programs including instructions used to perform some or all of the operations of the method according to the first or second aspect.

[0013] In a tenth aspect, an embodiment of the present application provides a computer-readable storage medium having stored thereon a computer program for electronic data exchange, the computer program causing a computer to perform some or all of the operations of the method according to the first or second aspect.

[0014] 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 a method according to the first or second aspect.

[0015] In the technical solution provided in this application, a terminal device receives a first message sent by a network device and determines a data transmission scheme based on the first message, where the data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme. Thus, a technical solution for determining a transmission scheme of a terminal device is provided. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram showing a wireless communication system according to an embodiment of the present application. [Figure 2] FIG. 2 is a flowchart illustrating a method for determining a transmission scheme according to an embodiment of the present application. [Figure 3] FIG. 3 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 4] FIG. 4 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 5] FIG. 5 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 6] FIG. 6 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 7] FIG. 7 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 8] FIG. 8 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 9] FIG. 9 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 10] FIG. 10 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 11] FIG. 11 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 12]FIG. 12 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 13] FIG. 13 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 14] FIG. 14 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 15] FIG. 15 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 16] FIG. 16 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 17] FIG. 17 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 18] FIG. 18 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 19] FIG. 19 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 20] FIG. 20 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 21] FIG. 21 is a flowchart illustrating another method for determining a transmission scheme according to an embodiment of the present application. [Figure 22] FIG. 22 is a block diagram illustrating the functional units constituting the determination device of the transmission scheme according to an embodiment of the present application. [Figure 23] FIG. 23 is a schematic diagram showing the structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, embodiments of the present application will be described with reference to the drawings of the embodiments of the present application.

[0018] As can be understood, the technical solutions of the embodiments of the present application are applicable to various communication systems, such as long-term evolution (LTE) systems and 5th generation (5G) mobile communication systems (e.g., new radio (NR)). 5G mobile communication systems include non-standalone (NSA) 5G mobile communication systems and / or standalone (SA) 5G mobile communication systems. The technical solutions of the present application are also applicable to communication systems in which multiple communication technologies are integrated (e.g., a communication system in which LTE technology and NR technology are integrated) or various new future communication systems (e.g., a 6G communication system, a 7G communication system, etc.), but are not limited thereto in the embodiments of the present application. The technical solutions of the embodiments of the present application are also applicable to different network architectures, including, but not limited to, a relay network architecture, a dual connectivity architecture, and a vehicle-to-everything (V2X) architecture.

[0019] A network device according to an embodiment of the present application may be a base station (BS), which is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, a device providing a base station function in a 2G (2nd generation) network includes a base transceiver station (BTS) and a base station controller (BSC), a device providing a base station function in a 3G network includes a Node B (Node B) and a radio network controller (RNC), a device providing a base station function in a 4G network includes an evolved Node B (eNB), a device providing a base station function in a wireless local area network (WLAN) is an access point (AP), a device providing a base station function in a 5G new radio (NR) includes a next generation Node B (gNB), and other examples include devices providing a base station function in new future communication systems.

[0020] A terminal device according to an embodiment of the present application includes a device with wireless communication capabilities. The terminal device may be a mobile phone, a tablet computer, a computer with wireless transmission and reception capabilities, 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 care, a wireless terminal in a smart grid, a wireless terminal in a smart home, etc. The terminal device may also be a handheld device with wireless communication capabilities, an in-vehicle device, a wearable device, a computing device, or other process 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. In different networks, the terminal device may have different names. For example, the term may be a user equipment, an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication equipment, a user agent, or a user device, a cellular telephone, a cordless telephone, a session initiation protocol (SIP) telephone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a terminal device in a 5G network, or a terminal device in a future evolved network, etc. The embodiments of the present application are not limited thereto.

[0021] Referring to Fig. 1, Fig. 1 is a schematic diagram illustrating a wireless communication system according to an embodiment of the present application. As shown in Fig. 1, the wireless communication system may 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 data transmission scheme.

[0022] For example, the network device may include multiple Transmission and Reception Points (TRPs) and / or multiple Remote Radio Heads (RRHs), and the multiple TRPs and / or RRHs may form a hyper cell, the TRPs and / or RRHs in the hyper cell share the same cell ID, each TRP and / or RRH may communicate with a terminal device, and the terminal device may communicate with multiple TRPs and / or RRHs simultaneously.

[0023] The types and numbers of network devices and terminal devices shown in FIG. 1 are used for illustration purposes only and are not intended to limit the present application.

[0024] In order to help those skilled in the art better understand the technical solution of the present application, the technical solution of the embodiments of the present application will be clearly and comprehensively described below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments that can be obtained by those skilled in the art based on the embodiments in the present application without creative efforts are all within the protection scope of the present application.

[0025] Referring to Fig. 2, Fig. 2 is a flowchart illustrating a method for determining a transmission scheme according to an embodiment of the present application, which is applied to the wireless communication system shown in Fig. 1. As shown in Fig. 2, the method includes the following steps:

[0026] S210: The network device sends a first message.

[0027] In the present application, for a terminal device that supports multi-station (e.g., multiple RRHs and / or multiple TRPs) coherent joint transmission (CJT), the network device can send a first message to the terminal device, thereby instructing the terminal device through the first message to perform data transmission using a coherent joint transmission (CJT) scheme.

[0028] The first message includes at least one of radio resource control (RRC) signaling, media access control (MAC) signaling, and downlink control information (DCI).

[0029] 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 based on 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.

[0030] For example, the network device may also send RRC signaling and MAC signaling to the terminal device, and the terminal device may determine the data transmission scheme of the terminal device based on the RRC signaling and / or MAC signaling.

[0031] For example, the network device may simultaneously transmit both DCI and MAC signaling to the terminal device, and the terminal device may determine its data transmission scheme based on the DCI and / or MAC signaling. For MAC signaling, the terminal device may also determine a quasi-co-location (QCL) relationship of antenna ports based on a TCI status field in the MAC signaling, so as to correctly receive and demodulate signals.

[0032] The data transmission scheme in the present application may be used for transmitting data or for transmitting control information. For example, the data transmission scheme may be a data channel transmission scheme or a control channel transmission scheme, and the present application is not limited thereto.

[0033] S220: The terminal device receives a first message and determines a 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 (CJT) scheme.

[0034] The first transmission scheme may include a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. Coherent joint transmission (CJT) utilizes cooperative transmission of the transmit antennas of multiple nodes to achieve high-capacity and reliable transmission of wireless links at cell edges and effectively solve the problem of interference at cell edges. The CJT scheme requires that the signals transmitted by each node have certain relative characteristics at the receiving end, so that each signal can achieve a large combination gain.

[0035] For example, for a downlink coherent joint transmission scheme, a network device can simultaneously transmit beamforming signals via separated RRHs and / or TRPs to terminal devices that support CJT, thereby further expanding capacity. CJT also facilitates distributed beamforming transmission, reducing interference to users from highly overlapping base stations.

[0036] In this application, the CJT scheme is used to define a transmission scheme in which signals transmitted by each node have certain associated characteristics at the receiving end. However, names defined with the same meaning as above in other standards may also be applied to this application, i.e., the names of the data transmission schemes are not limited in this application.

[0037] It should be noted that the multi-station CJT refers to joint coherent transmission of multiple stations, or different data belonging to the same physical downlink shared channel (PDSCH) being transmitted from different stations to a terminal device, or multiple stations being virtualized as one station for transmission. Names defined with the same meanings as those above in other standards can also be applied to this application, that is, the names of these parameters are not limited in this application.

[0038] Optionally, the data transmission scheme further includes a second transmission scheme.

[0039] The second transmission scheme may include a multi-station non-coherent joint transmission (NCJT) frequency-division multiplexing (FDM) transmission scheme and a multi-station non-coherent joint transmission (NCJT) time-division multiplexing (TDM) transmission scheme, such as fdmSchemeA, fdmSchemeB, tdmSchemeA, etc.

[0040] As can be seen from the above, the present application provides a method for determining a transmission scheme. Specifically, a terminal device receives a first message sent from 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 CJT scheme. Thus, a technical solution for determining a transmission scheme of a terminal device is provided.

[0041] Hereinafter, embodiments of the present application will be described in detail based on each case in which the first message includes at least one of RRC signaling, MAC signaling, and DCI.

[0042] <Example 1>

[0043] Referring to Figure 3, Figure 3 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 3, the method includes the following steps:

[0044] S301: A network device sends RRC signaling, which is used to indicate that a data transmission scheme of a terminal device is a first transmission scheme, and the first transmission scheme is a CJT scheme.

[0045] In an embodiment of the present application, the network device can indicate through RRC signaling that the data transmission scheme of the terminal device is the CJT scheme, and the RRC signaling can only be used to indicate the first transmission scheme.

[0046] The RRC signaling can be used to indicate CJT, and its value option is {enabled, disabled}. If the value option of the RRC signaling is enabled, it indicates that the network device has configured the first transmission scheme and that the first transmission scheme is enabled, that is, the terminal device transmits data using the first transmission scheme. If the value option of the RRC signaling is disabled, it indicates that the network device has not configured the first transmission scheme and that the first transmission scheme is not enabled, that is, the terminal device does not transmit data using the first transmission scheme.

[0047] For example, the value option of the RRC signaling may be represented by other values. For example, if the value option of the RRC signaling is 1, it indicates that the network device has configured the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme. If the value option of the RRC signaling is 0, it indicates that the network device has not configured 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 is not limited thereto.

[0048] Optionally, the first transmission scheme is associated with at least two TCI states.

[0049] The first transmission scheme supporting multi-station CJT may be associated with at least two TCI states.

[0050] S302: The terminal device receives RRC signaling, and if the value option of the RRC signaling is the first option, the terminal device determines that the data transmission scheme is the first transmission scheme.

[0051] Specifically, after receiving the RRC signaling, the terminal device can determine a data transmission scheme according to a value option of the RRC signaling. Specifically, if the value option of the RRC signaling is a first option, for example, if 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 receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

[0052] In an embodiment of the present application, a terminal device receives an RRC signaling sent by a network device, and if the value option of the RRC signaling is the first option, the terminal device determines its data transmission scheme to be the CJT scheme. Thus, a technical solution for determining the transmission scheme of a terminal device is provided.

[0053] <Example 2>

[0054] Referring to Figure 4, Figure 4 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 4, the method includes the following steps:

[0055] S401: A network device sends RRC signaling, which is used to indicate that a data transmission scheme of a terminal device is a first transmission scheme and / or a second transmission scheme, and the first transmission scheme is a CJT scheme.

[0056] In an embodiment of the present application, the network device may indicate through RRC signaling that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, where the first transmission scheme and the second transmission scheme are different, and the second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA.

[0057] The RRC signaling has a name of repetitionScheme-r18 and may be used to indicate the first transmission scheme and / or the second transmission scheme. The value option of the RRC signaling may be {fdmSchemeA, fdmSchemeB, tdmSchemeA, cjtScheme}. cjtScheme represents a coherent joint transmission scheme. If the value option of the RRC signaling is cjtScheme, it indicates that the network device has configured the first transmission scheme and that the first transmission scheme is enabled, i.e., the terminal device can perform data transmission using the first transmission scheme. 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 has configured the second transmission scheme and that the second transmission scheme is enabled, i.e., the terminal device transmits data using the second transmission scheme.

[0058] Exemplarily, the value option of the RRC signaling may be represented by other values. For example, the first transmission scheme may be represented by a value option of 0. When the value option of the RRC signaling is 0, it indicates that the network device has configured 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 may be represented by a value option that is non-zero. When the value option of the RRC signaling is 1, 2, or 3, it indicates that the network device has configured 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 thereto.

[0059] Optionally, the first transmission scheme is associated with at least two TCI states.

[0060] The first transmission scheme supporting multi-station CJT may be associated with at least two TCI states.

[0061] S402: The terminal device receives RRC signaling, and determines that the data transmission scheme is the first transmission scheme and / or the second transmission scheme according to a value option of the RRC signaling.

[0062] Specifically, after receiving the RRC signaling, the terminal device can determine a data transmission scheme according to a value option of the RRC signaling. Specifically, if the value option of the RRC signaling is the second option, for example, if 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 receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the value option of the RRC signaling is the third option, for example, if the value option of the RRC signaling is at least one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, or if the value option of the RRC signaling is 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 receive and / or transmit data using FDM and / or TDM in multi-station NCJT.

[0063] In an embodiment of the present application, a terminal device receives an RRC signaling sent by a network device, and determines its data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to a value option of the RRC signaling. Thus, a technical solution for determining the transmission scheme of a terminal device is provided.

[0064] Example 3

[0065] Referring to Figure 5, Figure 5 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 5, the method includes the following steps:

[0066] S501: A network device sends a DCI, the DCI including a first field, the first field being used to indicate a first transmission scheme and / or a second transmission scheme, and the first transmission scheme being a CJT scheme.

[0067] In an embodiment of the present application, the network device may use the DCI to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, where the first transmission scheme and the second transmission scheme are different. The second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA.

[0068] The network device newly defines a first field in the DCI. The first field is used to indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme. The first field may be 1 bit, and the 1 bit may be a new 1 bit added in the DCI or an existing 1 bit in the DCI. For example, 1 bit in a reserved field in the DCI is set in the first field. The embodiment of the present application is not limited thereto.

[0069] Exemplarily, when the value of the first field is a first value, the first field may be used to indicate that the data transmission scheme is the first transmission scheme. When the value of the first field is a second value, the first field may be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the value of the first field is 0, the first field may be used to indicate that the data transmission scheme is the first transmission scheme, and when the value of the first field is 1, the first field may be used to indicate that the data transmission scheme is the second transmission scheme. As another example, when the value of the first field is 1, the first field may be used to indicate that the data transmission scheme is the first transmission scheme, and when the value of the first field is 0, the first field may be used to indicate that the data transmission scheme is the second transmission scheme.

[0070] Note that the first field in the present application may be 2 bits, 3 bits, 4 bits, etc. The manner in which different values ​​indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme is not limited in the embodiments of the present application.

[0071] Optionally, the first transmission scheme is associated with at least two TCI states.

[0072] The first transmission scheme supporting multi-station CJT may be associated with at least two TCI states.

[0073] 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.

[0074] Specifically, after receiving the DCI, the terminal device can determine its data transmission scheme based on a first field in the DCI. Specifically, if the first field indicates a first transmission scheme, the terminal device determines that its data transmission scheme is the first transmission scheme, that is, the terminal device can receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the first field indicates a second transmission scheme, the terminal device determines that its data transmission scheme is the second transmission scheme, and the terminal device can receive and / or transmit data using FDM and / or TDM in a multi-station NCJT.

[0075] For example, if the first field in the DCI has a value of 1 and is used to indicate a first transmission scheme, the terminal device determines that the data transmission scheme is a CJT scheme. If the first field in the DCI has a value of 0 and is used to indicate a second transmission scheme, the terminal device determines that the data transmission scheme is an FDM transmission scheme and / or a TDM transmission scheme.

[0076] In an embodiment of the present application, a terminal device receives DCI sent by a network device, and determines its data transmission scheme as the first transmission scheme and / or the second transmission scheme according to a first field in the DCI. Thus, a technical solution for determining the transmission scheme of a terminal device is provided.

[0077] Example 4

[0078] Referring to Figure 6, Figure 6 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 6, the method includes the following steps:

[0079] S601: A network device transmits a DCI, which includes a TCI status, and the TCI status is indicated by a TCI field in the DCI.

[0080] In an embodiment of the present application, the network device can indicate through the TCI field indicated by the DCI that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, where the first transmission scheme and the second transmission scheme are different. The second transmission scheme can include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA.

[0081] The TCI field in the DCI can indicate one or more TCI states, and depending on the number of TCI states, the network device can indicate the data transmission scheme to be used by the terminal device.

[0082] S602: The terminal device receives the DCI and determines whether the data transmission scheme is a first transmission scheme or a second transmission scheme according to the number of TCI states indicated by the DCI. The first transmission scheme is the CJT scheme.

[0083] 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.

[0084] In an embodiment of the present application, the terminal device's determination that the data transmission scheme is the first transmission scheme or the second transmission scheme according to the number of TCI states indicated by the TCI field in the DCI includes the following: If the number of TCI states indicated by the DCI is equal to or greater than a first threshold, the terminal device determines that the data transmission scheme is the first transmission scheme; If the number of TCI states indicated by the DCI is less than the first threshold, the terminal device determines that the data transmission scheme is the second transmission scheme.

[0085] In one situation, the first transmission scheme is associated with at least two TCI states.

[0086] Specifically, the CJT scheme may be associated with at least two TCI states, and the first threshold may be 2. If the number of TCI states indicated by the DCI is two or more, the terminal device may determine that its data transmission scheme is the first transmission scheme and may receive and / or transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the number of TCI states indicated by the DCI is less than two, the terminal device may determine that its data transmission scheme is the second transmission scheme and may receive and / or transmit data using FDM and / or TDM in multi-station NCJT.

[0087] Optionally, in another situation, the first transmission scheme is associated with at least three TCI states.

[0088] In an embodiment of the present application, a terminal device receives a DCI sent by a network device, and determines its data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the number of TCI states indicated by the DCI. Thus, a technical solution for determining the transmission scheme of a terminal device is provided.

[0089] <Example 5>

[0090] Referring to Figure 7, Figure 7 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 7, the method includes the following steps:

[0091] S701: A network device sends a Media Access Control (MAC) Control Element (CE) signaling, where the MAC CE signaling includes at least three TCI status fields.

[0092] In an embodiment of the present application, the network device may indicate through MAC CE signaling that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, where the first transmission scheme is a CJT scheme and is different from the second transmission scheme, and the second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA.

[0093] The MAC CE may include at least three TCI status fields.

[0094] S702: The terminal device receives 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, where the first transmission scheme is a CJT scheme.

[0095] When specifically performing step 702, the terminal device can determine whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on a subheader corresponding to MAC CE. Specifically, the specific embodiment in which the terminal device determines whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on a subheader corresponding to MAC CE is not limited. That is, the network device can indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme by newly defining a field in the subheader, and can also indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme by defining a value of a certain field. The embodiment of the present application is not limited thereto.

[0096] A MAC header consists of one or more MAC subheaders, and each subheader corresponds to a MAC CE. After receiving the MAC CE, the terminal device can determine whether the MAC CE indicates the first transmission scheme and / or the second transmission scheme by analyzing the subheader corresponding to the MAC CE.

[0097] In an embodiment of the present application, a terminal device receives MAC CE signaling sent by a network device, and determines its data transmission scheme to be the first transmission scheme and / or the second transmission scheme based on the MAC CE signaling. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. In addition, through the TCI status field carried in the MAC CE, the terminal device can determine the QCL relationship of the antenna ports, so as to correctly receive and demodulate signals.

[0098] Example 6

[0099] Referring to Figure 8, Figure 8 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 8, the method includes the following steps:

[0100] S801: A network device sends MAC CE signaling, which is used to set a TCI status of a control resource set (CORESET), and which includes at least three TCI status fields.

[0101] In an embodiment of the present application, the network device may indicate through MAC CE signaling that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, where the first transmission scheme is a CJT scheme and is different from the second transmission scheme, and the second transmission scheme may include an FDM transmission scheme and a TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA.

[0102] When a MAC CE is used to configure the TCI state of a control resource set (CORESET), the MAC CE may be associated with at least three TCI state fields.

[0103] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0104] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0105] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0106] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2 The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field, or the second field may be used to indicate that the first byte is present. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0107] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0108] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0109] Exemplarily, the MAC CE signaling includes one second field, and the MAC CE may be as shown in Table 1.

[0110] [Table 1]

[0111] The Serving Cell ID field is used to indicate the serving cell to which the MAC CE applies. The CORESET ID field is used to indicate the CORESET configured by the MAC CE. TCI state ID 0,1 , TCI state ID 0,2 , TCI state ID 0,3 is used to represent the TCI state setting of the CORESET indicated by the CORESET ID field. The C field is the second field and is used to represent the TCI state ID 0,3 The R field is a reserved field.

[0112] S802: The terminal device receives 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, where the first transmission scheme is a CJT scheme.

[0113] When specifically performing step 802, the terminal device can determine whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on the subheader corresponding to the MAC CE. Specifically, the specific embodiment in which the terminal device determines whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on the subheader corresponding to the MAC CE is not limited. That is, the network device can indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme by newly defining a field in the subheader, and can also indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme by defining a value of a certain field. The embodiment of the present application is not limited thereto.

[0114] A MAC header consists of one or more MAC subheaders, and each subheader corresponds to a MAC CE. After receiving the MAC CE, the terminal device can determine whether the MAC CE indicates the first transmission scheme and / or the second transmission scheme by analyzing the subheader corresponding to the MAC CE.

[0115] In an embodiment of the present application, a terminal device receives MAC CE signaling sent by a network device, and determines that its data transmission scheme is the first transmission scheme and / or the second transmission scheme based on the MAC CE signaling. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. In addition, when MAC CE is used to set the TCI state of CORESET, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0116] Example 7

[0117] Referring to Figure 9, Figure 9 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 9, the method includes the following steps:

[0118] S901: A network device sends MAC CE signaling, which is used to set a TCI status of a PDSCH, and an i-th code point in a TCI field in a DCI indicates that the MAC CE includes at least three TCI status fields, where i is an integer.

[0119] In an embodiment of the present application, the network device may indicate through MAC CE signaling that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, where the first transmission scheme is a CJT scheme and is different from the second transmission scheme, and the second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA.

[0120] When a MAC CE is used to configure the TCI state of a PDSCH and the i-th codepoint in the TCI field in the DCI indicates at least three TCI state fields, the MAC CE may include at least three TCI state fields corresponding to the TCI state configuration indicated by the i-th codepoint in the TCI field in the DCI, where i is the index of the codepoint in the TCI field in the DCI. A terminal device can determine the QCL relationship of antenna ports based on the TCI state fields carried in the MAC CE, and thereby correctly receive and demodulate signals.

[0121] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0122] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0123] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0124] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2 The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0125] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0126] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0127] Illustratively, the MAC CE signaling includes a plurality of second fields, and the MAC CE may be as shown in Table 2.

[0128] A MAC CE may be identified by a MAC Protocol Data Unit (PDU) subheader containing a logical channel ID (LCID). The Serving Cell ID field is used to indicate the serving cell to which the MAC CE applies, and may be 5 bits long. The Bandwidth Part (BWP) ID field may be used to indicate a downlink (DL) BWP and / or an associated uplink (UL) BWP. The MAC CE may apply the DL BWP and / or an associated UL BWP as code points in a designated DCI BWP indicator field. The BWP ID field may be 2 bits long. The R field is a reserved field.

[0129] Furthermore, C i Field, C. i,1 Field, and / or C i,2All fields are secondary fields. C i The field is the TCI state ID i,2 is used to indicate whether or not C exists. i,1 The field is the TCI state ID i,3 is used to indicate whether or not C exists. i,2 The field is reserved. TCI state ID i,1 , TCI state ID i,2 , and TCI state ID i,3 is the TCI state setting indicated by the i-th codepoint in the TCI field in the corresponding DCI, where i is the index of the codepoint of the TCI field in the DCI.

[0130] [Table 2]

[0131] S902: The terminal device receives 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, where the first transmission scheme is a CJT scheme.

[0132] When specifically performing step 902, the terminal device can determine whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on the subheader corresponding to the MAC CE. Specifically, the specific embodiment in which the terminal device determines whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on the subheader corresponding to the MAC CE is not limited. That is, the network device can indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme by newly defining a field in the subheader, or can indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme by defining a value of a certain field. This is not limited in the embodiment of the present application.

[0133] A MAC header consists of one or more MAC subheaders, and each subheader corresponds to a MAC CE. After receiving the MAC CE, the terminal device can determine whether the MAC CE indicates the first transmission scheme and / or the second transmission scheme by analyzing the subheader corresponding to the MAC CE.

[0134] In an embodiment of the present application, a terminal device receives MAC CE signaling sent by a network device, and determines its data transmission scheme to be the first transmission scheme and / or the second transmission scheme based on the MAC CE signaling. Thus, a technical solution for determining a transmission scheme of a terminal device is provided. Furthermore, when MAC CE is used for the TCI state of PDSCH, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0135] Example 8

[0136] Referring to Figure 10, Figure 10 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 10, the method includes the following steps:

[0137] S101: A network device sends RRC signaling and MAC CE signaling, where the RRC signaling is used to indicate that a data transmission scheme of a terminal device is a first transmission scheme, where the first transmission scheme is a CJT scheme, and the MAC CE signaling includes at least three TCI status fields.

[0138] In an embodiment of the present application, the network device can indicate through RRC signaling that the data transmission scheme of the terminal device is the CJT scheme, and the RRC signaling can only be used to indicate the first transmission scheme, and at the same time, the network device can indicate the TCI state setting by sending MAC CE signaling, so as to determine the QCL relationship of the antenna ports in the first transmission scheme and correctly receive and demodulate the signal.

[0139] The RRC signaling can be used to indicate CJT, and its value option is {enabled, disabled}. If the value option of the RRC signaling is enabled, it indicates that the network device has configured the first transmission scheme and that the first transmission scheme is enabled, that is, the terminal device transmits data using the first transmission scheme. If the value option of the RRC signaling is disabled, it indicates that the network device has not configured the first transmission scheme and that the first transmission scheme is not enabled, that is, the terminal device does not transmit data using the first transmission scheme.

[0140] For example, the value option of the RRC signaling may be represented by other values. For example, if the value option of the RRC signaling is 1, it indicates that the network device has configured the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme. If the value option of the RRC signaling is 0, it indicates that the network device has not configured 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 is not limited thereto.

[0141] S102: The terminal device receives RRC signaling and MAC CE signaling, and determines, according to the RRC signaling and MAC CE, that the data transmission scheme is the first transmission scheme.

[0142] Specifically, after receiving the RRC signaling, the terminal device can determine a data transmission scheme according to a value option of the RRC signaling. Specifically, if the value option of the RRC signaling is a first option, for example, if 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 receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

[0143] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0144] In an embodiment of the present application, a terminal device receives RRC signaling and MAC CE signaling sent by a network device, and if the value option of the RRC signaling is the first option, determines its data transmission scheme as the CJT scheme. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. At the same time, the QCL relationship of the antenna ports can be determined based on the TCI status field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0145] Example 9

[0146] Referring to Figure 11, Figure 11 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 11, the method includes the following steps:

[0147] S111: The network device sends RRC signaling and MAC CE signaling, where 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 CJT scheme, and the MAC CE signaling includes at least three TCI status fields.

[0148] In an embodiment of the present application, the network device may use RRC signaling to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, which are different from each other. The second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device may use MAC CE signaling to indicate TCI state configuration, thereby determining the QCL relationship of the antenna ports in the first transmission scheme and enabling correct signal reception and demodulation.

[0149] The RRC signaling has a name of repetitionScheme-r18 and may be used to indicate the first transmission scheme and / or the second transmission scheme. The value option of the RRC signaling may be {fdmSchemeA, fdmSchemeB, tdmSchemeA, cjtScheme}. cjtScheme represents a coherent joint transmission scheme. If the value option of the RRC signaling is cjtScheme, it indicates that the network device has configured the first transmission scheme and that the first transmission scheme is enabled, i.e., the terminal device can perform data transmission using the first transmission scheme. 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 has configured the second transmission scheme and that the second transmission scheme is enabled, i.e., the terminal device transmits data using the second transmission scheme.

[0150] Exemplarily, the value option of the RRC signaling may be represented by other values. For example, the first transmission scheme may be represented by a value option of 0. When the value option of the RRC signaling is 0, it indicates that the network device has configured 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 may be represented by a value option that is non-zero. When the value option of the RRC signaling is 1, 2, or 3, it indicates that the network device has configured 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 thereto.

[0151] S112: The terminal device receives RRC signaling and MAC CE signaling, and determines, according to the RRC signaling and MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0152] Specifically, after receiving the RRC signaling, the terminal device can determine a data transmission scheme according to a value option of the RRC signaling. Specifically, if the value option of the RRC signaling is the second option, for example, if 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 receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the value option of the RRC signaling is the third option, for example, if the value option of the RRC signaling is at least one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, or if the value option of the RRC signaling is 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 receive and / or transmit data using FDM and / or TDM in multi-station NCJT.

[0153] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0154] In an embodiment of the present application, a terminal device receives RRC signaling and MAC CE signaling sent by a network device, and determines its data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the value options of the RRC signaling. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. At the same time, the QCL relationship of the antenna ports can be determined based on the TCI status field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0155] Example 10

[0156] Referring to Figure 12, Figure 12 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 12, the method includes the following steps:

[0157] S121: A network device transmits DCI and MAC CE signaling, where the DCI includes a first field, and the first field is used to indicate a first transmission scheme and / or a second transmission scheme, and the MAC CE signaling includes at least three TCI status fields, and the first transmission scheme is a CJT scheme.

[0158] In an embodiment of the present application, the network device may use DCI to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, which are different from each other. The second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device may send MAC CE signaling to indicate TCI state configuration, thereby determining the QCL relationship of the antenna ports in the first transmission scheme and enabling correct signal reception and demodulation.

[0159] The network device newly defines a first field in the DCI. The first field is used to indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme. The first field may be 1 bit, and the 1 bit may be a new 1 bit added to the DCI or an existing 1 bit in the DCI. For example, 1 bit in a reserved field in the DCI is set in the first field. The embodiment of the present application is not limited thereto.

[0160] Exemplarily, when the value of the first field is a first value, the first field may be used to indicate that the data transmission scheme is the first transmission scheme. When the value of the first field is a second value, the first field may be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the value of the first field is 0, the first field may be used to indicate that the data transmission scheme is the first transmission scheme, and when the value of the first field is 1, the first field may be used to indicate that the data transmission scheme is the second transmission scheme. As another example, when the value of the first field is 1, the first field may be used to indicate that the data transmission scheme is the first transmission scheme, and when the value of the first field is 0, the first field may be used to indicate that the data transmission scheme is the second transmission scheme.

[0161] Note that the first field in the present application may be 2 bits, 3 bits, 4 bits, etc. The manner in which different values ​​indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme is not limited in the embodiments of the present application.

[0162] S122: The terminal device receives DCI and MAC CE signaling, and determines, based on the DCI and MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0163] Specifically, after receiving the DCI, the terminal device can determine its data transmission scheme based on a first field in the DCI. Specifically, if the first field indicates a first transmission scheme, the terminal device determines that its data transmission scheme is the first transmission scheme, that is, the terminal device can receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the first field indicates a second transmission scheme, the terminal device determines that its data transmission scheme is the second transmission scheme, and the terminal device can receive and / or transmit data using FDM and / or TDM in a multi-station NCJT.

[0164] For example, if the first field in the DCI has a value of 1 and is used to indicate a first transmission scheme, the terminal device determines that the data transmission scheme is a CJT scheme. If the first field in the DCI has a value of 0 and is used to indicate a second transmission scheme, the terminal device determines that the data transmission scheme is an FDM transmission scheme and / or a TDM transmission scheme.

[0165] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0166] In an embodiment of the present application, the terminal device DCIand MAC CE signaling, and determines that the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on the first field in the DCI. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. At the same time, the QCL relationship of the antenna ports can be determined based on the TCI field carried in the MAC CE, so that the signal can be correctly received and demodulated.

[0167] Example 11

[0168] Referring to Figure 13, Figure 13 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 13, the method includes the following steps:

[0169] S131: A network device sends DCI and MAC CE signaling. The DCI includes a TCI status, and the TCI status is indicated by a TCI field in the DCI. The MAC CE signaling includes at least three TCI status fields.

[0170] In an embodiment of the present application, the network device can indicate, through the TCI state indicated by the DCI, that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme. The first transmission scheme and the second transmission scheme are different. The second transmission scheme can include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device can indicate the TCI state setting by sending MAC CE signaling, so as to determine the QCL relationship of the antenna ports in the first transmission scheme and correctly receive and demodulate signals.

[0171] The TCI field in the DCI can indicate one or more TCI states, and depending on the number of TCI states, the network device can indicate the data transmission scheme to be used by the terminal device.

[0172] S132: The terminal device receives DCI and MAC CE signaling, and determines, based on the DCI and MAC CE, that the data transmission scheme is a first transmission scheme and / or a second transmission scheme. The first transmission scheme is a CJT scheme.

[0173] 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.

[0174] In an embodiment of the present application, the terminal device's determination that the data transmission scheme is the first transmission scheme or the second transmission scheme according to the number of TCI states indicated by the TCI field in the DCI includes the following: If the number of TCI states indicated by the DCI is equal to or greater than a first threshold, the terminal device determines that the data transmission scheme is the first transmission scheme; If the number of TCI states indicated by the DCI is less than the first threshold, the terminal device determines that the data transmission scheme is the second transmission scheme.

[0175] Specifically, the CJT scheme may be associated with at least two TCI states, and the first threshold may be 2. Therefore, if the number of TCI states indicated by the DCI is two or more, the terminal device may determine that its data transmission scheme is the first transmission scheme and may receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the number of TCI states indicated by the DCI is less than two, the terminal device may determine that its data transmission scheme is the second transmission scheme and may receive and / or transmit data using FDM and / or TDM in multi-station NCJT.

[0176] For example, if the first field in the DCI has a value of 1 and is used to indicate a first transmission scheme, the terminal device determines that the data transmission scheme is a CJT scheme. If the first field in the DCI has a value of 0 and is used to indicate a second transmission scheme, the terminal device determines that the data transmission scheme is a multi-station NCJT FDM transmission scheme and / or a multi-station NCJT TDM transmission scheme.

[0177] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0178] In an embodiment of the present application, a terminal device receives DCI and MAC CE signaling sent by a network device, and determines its data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the number of TCI states indicated by the DCI. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. At the same time, the QCL relationship of the antenna ports can be determined based on the TCI state field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0179] Example 12

[0180] Referring to Figure 14, Figure 14 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 14, the method includes the following steps:

[0181] S141: The network device sends RRC signaling and MAC CE signaling. 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 CJT scheme. The MAC CE signaling is used to set the TCI state of the CORESET, and the MAC CE signaling includes at least three TCI state fields.

[0182] In an embodiment of the present application, the network device can indicate through RRC signaling that the data transmission scheme of the terminal device is the CJT scheme, and the RRC signaling can only be used to indicate the first transmission scheme, and at the same time, the network device can indicate the TCI state setting by sending MAC CE signaling, so as to determine the QCL relationship of the antenna ports in the first transmission scheme and correctly receive and demodulate the signal.

[0183] The RRC signaling can be used to indicate CJT, and its value option is {enabled, disabled}. If the value option of the RRC signaling is enabled, it indicates that the network device has configured the first transmission scheme and that the first transmission scheme is enabled, that is, the terminal device transmits data using the first transmission scheme. If the value option of the RRC signaling is disabled, it indicates that the network device has not configured the first transmission scheme and that the first transmission scheme is not enabled, that is, the terminal device does not transmit data using the first transmission scheme.

[0184] For example, the value option of the RRC signaling may be represented by other values. For example, if the value option of the RRC signaling is 1, it indicates that the network device has configured the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme. If the value option of the RRC signaling is 0, it indicates that the network device has not configured 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 is not limited thereto.

[0185] When a MAC CE is used to set the TCI state of a CORESET, the MAC CE can be associated with at least three TCI state fields.

[0186] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0187] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0188] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0189] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2 The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field, or the second field may be used to indicate that the first byte is present. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0190] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0191] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0192] For example, if the MAC CE signaling includes one second field, the MAC CE may be as shown in Table 1 above.

[0193] S142: The terminal device receives RRC signaling and MAC CE signaling, and determines, based on the RRC signaling and MAC CE, that the data transmission scheme is the first transmission scheme.

[0194] Specifically, after receiving the RRC signaling, the terminal device can determine a data transmission scheme according to a value option of the RRC signaling. Specifically, if the value option of the RRC signaling is a first option, for example, if 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 receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

[0195] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme or the second transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0196] In an embodiment of the present application, a terminal device receives RRC signaling and MAC CE signaling sent by a network device, and if the value option of the RRC signaling is the first option, determines its data transmission scheme to be the CJT scheme. Thus, a technical solution for determining a transmission scheme of a terminal device is provided. In addition, if MAC CE is used to set the TCI state of CORESET, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0197] Example 13

[0198] Referring to Figure 15, Figure 15 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 15, the method includes the following steps:

[0199] S151: The network device sends RRC signaling and MAC 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, and the first transmission scheme is a CJT scheme. The MAC CE signaling is used to set the TCI state of the CORESET, and the MAC CE signaling includes at least three TCI state fields.

[0200] In an embodiment of the present application, the network device may use RRC signaling to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, which are different from each other. The second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device may use MAC CE signaling to indicate TCI state configuration, thereby determining the QCL relationship of the antenna ports in the first transmission scheme and enabling correct signal reception and demodulation.

[0201] The RRC signaling has a name of repetitionScheme-r18 and may be used to indicate the first transmission scheme and / or the second transmission scheme. The value option of the RRC signaling may be {fdmSchemeA, fdmSchemeB, tdmSchemeA, cjtScheme}. cjtScheme represents a coherent joint transmission scheme. If the value option of the RRC signaling is cjtScheme, it indicates that the network device has configured the first transmission scheme and that the first transmission scheme is enabled, i.e., the terminal device can perform data transmission using the first transmission scheme. 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 has configured the second transmission scheme and that the second transmission scheme is enabled, i.e., the terminal device transmits data using the second transmission scheme.

[0202] Exemplarily, the value option of the RRC signaling may be represented by other values. For example, the first transmission scheme may be represented by a value option of 0. When the value option of the RRC signaling is 0, it indicates that the network device has configured 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 may be represented by a value option that is non-zero. When the value option of the RRC signaling is 1, 2, or 3, it indicates that the network device has configured 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 thereto.

[0203] When a MAC CE is used to set the TCI state of a CORESET, the MAC CE can be associated with at least three TCI state fields.

[0204] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0205] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0206] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0207] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2 The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field, or the second field may be used to indicate that the first byte is present. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0208] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0209] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0210] For example, if the MAC CE signaling includes one second field, the MAC CE may be as shown in Table 1 above.

[0211] S152: The terminal device receives RRC signaling and MAC CE signaling, and determines, according to the RRC signaling and MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0212] Specifically, after receiving the RRC signaling, the terminal device can determine a data transmission scheme according to a value option of the RRC signaling. Specifically, if the value option of the RRC signaling is the second option, for example, if 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 receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the value option of the RRC signaling is the third option, for example, if the value option of the RRC signaling is at least one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, or if the value option of the RRC signaling is 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 receive and / or transmit data using FDM and / or TDM in multi-station NCJT.

[0213] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme or the second transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0214] In an embodiment of the present application, a terminal device receives RRC signaling and MAC CE signaling sent by a network device, and determines its data transmission scheme to be the first transmission scheme and / or the second transmission scheme according to the value options of the RRC signaling. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. In addition, when MAC CE is used to set the TCI state of CORESET, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0215] Example 14

[0216] Referring to Figure 16, Figure 16 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 16, the method includes the following steps:

[0217] S161: A network device sends DCI and 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, and the first transmission scheme is a CJT scheme. The MAC CE signaling is used to set a TCI state of a CORESET, and the MAC CE signaling includes at least three TCI state fields.

[0218] In an embodiment of the present application, the network device may use DCI to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, which are different from each other. The second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device may send MAC CE signaling to indicate TCI state configuration, thereby determining the QCL relationship of the antenna ports in the first transmission scheme and enabling correct signal reception and demodulation.

[0219] The network device newly defines a first field in the DCI. The first field is used to indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme. The first field may be 1 bit, and the 1 bit may be a new 1 bit added to the DCI or an existing 1 bit in the DCI. For example, 1 bit in a reserved field in the DCI is set in the first field. The embodiment of the present application is not limited thereto.

[0220] Exemplarily, when the value of the first field is a first value, the first field may be used to indicate that the data transmission scheme is the first transmission scheme. When the value of the first field is a second value, the first field may be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the value of the first field is 0, the first field may be used to indicate that the data transmission scheme is the first transmission scheme, and when the value of the first field is 1, the first field may be used to indicate that the data transmission scheme is the second transmission scheme. As another example, when the value of the first field is 1, the first field may be used to indicate that the data transmission scheme is the first transmission scheme, and when the value of the first field is 0, the first field may be used to indicate that the data transmission scheme is the second transmission scheme.

[0221] Note that the first field in the present application may be 2 bits, 3 bits, 4 bits, etc. The manner in which different values ​​indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme is not limited in the embodiments of the present application.

[0222] When a MAC CE is used to set the TCI state of a CORESET, the MAC CE can be associated with at least three TCI state fields.

[0223] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0224] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0225] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0226] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2 The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field, or the second field may be used to indicate that the first byte is present. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0227] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0228] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0229] Exemplarily, the MAC CE signaling includes one second field, and the MAC CE may be as shown in Table 1 above.

[0230] S162: The terminal device receives DCI and MAC CE signaling, and determines, based on the DCI and MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0231] Specifically, after receiving the DCI, the terminal device can determine its data transmission scheme based on a first field in the DCI. Specifically, if the first field indicates a first transmission scheme, the terminal device determines that its data transmission scheme is the first transmission scheme, that is, the terminal device can receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the first field indicates a second transmission scheme, the terminal device determines that its data transmission scheme is the second transmission scheme, and the terminal device can receive and / or transmit data using FDM and / or TDM in a multi-station NCJT.

[0232] For example, if the first field in the DCI has a value of 1 and is used to indicate a first transmission scheme, the terminal device determines that the data transmission scheme is a CJT scheme. If the first field in the DCI has a value of 0 and is used to indicate a second transmission scheme, the terminal device determines that the data transmission scheme is an FDM transmission scheme and / or a TDM transmission scheme.

[0233] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0234] In an embodiment of the present application, the terminal device DCI and MAC CE signaling, and determines that the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on the first field in the DCI. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. Furthermore, when MAC CE is used to set the TCI state of CORESET, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0235] Example 15

[0236] Referring to Figure 17, Figure 17 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 17, the method includes the following steps:

[0237] S171: A network device sends DCI and MAC CE signaling. The DCI includes a TCI status, and the TCI status is indicated by a TCI field in the DCI. The MAC CE signaling is used to set the TCI status of a CORESET, and the MAC CE signaling includes at least three TCI status fields.

[0238] In an embodiment of the present application, the network device can indicate, through the TCI state indicated by the DCI, that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme. The first transmission scheme and the second transmission scheme are different. The second transmission scheme can include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device can indicate the TCI state setting by sending MAC CE signaling, so as to determine the QCL relationship of the antenna ports in the first transmission scheme and correctly receive and demodulate signals.

[0239] The TCI field in the DCI can indicate one or more TCI states, and depending on the number of TCI states, the network device can indicate the data transmission scheme to be used by the terminal device.

[0240] When a MAC CE is used to set the TCI state of a CORESET, the MAC CE can be associated with at least three TCI state fields.

[0241] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0242] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0243] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0244] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2 The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field, or the second field may be used to indicate that the first byte is present. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0245] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0246] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0247] For example, if the MAC CE signaling includes one second field, the MAC CE may be as shown in Table 1 above.

[0248] S172: The terminal device receives DCI and MAC CE signaling; DCI and determining the data transmission scheme as a first transmission scheme and / or a second transmission scheme based on the MAC CE, where the first transmission scheme is a CJT scheme.

[0249] 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.

[0250] In an embodiment of the present application, the terminal device's determination that the data transmission scheme is the first transmission scheme or the second transmission scheme according to the number of TCI states indicated by the TCI field in the DCI includes the following: If the number of TCI states indicated by the DCI is equal to or greater than a first threshold, the terminal device determines that the data transmission scheme is the first transmission scheme; If the number of TCI states indicated by the DCI is less than the first threshold, the terminal device determines that the data transmission scheme is the second transmission scheme.

[0251] Specifically, the CJT scheme may be associated with at least two TCI states, and the first threshold may be 2. Therefore, if the number of TCI states indicated by the DCI is two or more, the terminal device may determine that its data transmission scheme is the first transmission scheme and may receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the number of TCI states indicated by the DCI is less than two, the terminal device may determine that its data transmission scheme is the second transmission scheme and may receive and / or transmit data using FDM and / or TDM in multi-station NCJT.

[0252] For example, if the first field in the DCI has a value of 1 and is used to indicate a first transmission scheme, the terminal device determines that the data transmission scheme is a CJT scheme. If the first field in the DCI has a value of 0 and is used to indicate a second transmission scheme, the terminal device determines that the data transmission scheme is an FDM transmission scheme and / or a TDM transmission scheme.

[0253] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0254] In an embodiment of the present application, a terminal device receives DCI and MAC CE signaling sent by a network device, and determines its data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the number of TCI states indicated by the DCI. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. Furthermore, when MAC CE is used to set the TCI state of CORESET, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0255] Example 16

[0256] Referring to Figure 18, Figure 18 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 18, the method includes the following steps:

[0257] S181: The network device sends RRC signaling and MAC CE signaling. The RRC signaling is used to indicate that the data transmission scheme of the terminal device is a first transmission scheme, where the first transmission scheme is the CJT scheme. The MAC CE signaling is used to set the TCI status of the PDSCH, where the i-th codepoint in the TCI field in the DCI indicates that the MAC CE includes at least three TCI status fields, where i is an integer.

[0258] In an embodiment of the present application, the network device can indicate through RRC signaling that the data transmission scheme of the terminal device is the CJT scheme, and the RRC signaling can only be used to indicate the first transmission scheme, and at the same time, the network device can indicate the TCI state setting by sending MAC CE signaling, so as to determine the QCL relationship of the antenna ports in the first transmission scheme and correctly receive and demodulate the signal.

[0259] The RRC signaling can be used to indicate CJT, and its value option is {enabled, disabled}. If the value option of the RRC signaling is enabled, it indicates that the network device has configured the first transmission scheme and that the first transmission scheme is enabled, that is, the terminal device transmits data using the first transmission scheme. If the value option of the RRC signaling is disabled, it indicates that the network device has not configured the first transmission scheme and that the first transmission scheme is not enabled, that is, the terminal device does not transmit data using the first transmission scheme.

[0260] For example, the value option of the RRC signaling may be represented by other values. For example, if the value option of the RRC signaling is 1, it indicates that the network device has configured the first transmission scheme, and the RRC signaling is used to indicate that the terminal device can use the first transmission scheme. If the value option of the RRC signaling is 0, it indicates that the network device has not configured 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 is not limited thereto.

[0261] When a MAC CE is used to configure the TCI state of a PDSCH and the i-th codepoint in the TCI field in the DCI indicates at least three TCI state fields, the MAC CE may include at least three TCI state fields corresponding to the TCI state configuration indicated by the i-th codepoint in the TCI field in the DCI, where i is the index of the codepoint in the TCI field in the DCI. A terminal device can determine the QCL relationship of antenna ports based on the TCI state fields carried in the MAC CE, and thereby correctly receive and demodulate signals.

[0262] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0263] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0264] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0265] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0266] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0267] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0268] For example, if the MAC CE signaling includes multiple second fields, the MAC CE may be as shown in Table 2 above.

[0269] S182: The terminal device receives RRC signaling and MAC CE signaling, and determines, according to the RRC signaling and MAC CE, that the data transmission scheme is the first transmission scheme.

[0270] Specifically, after receiving the RRC signaling, the terminal device can determine a data transmission scheme according to a value option of the RRC signaling. Specifically, if the value option of the RRC signaling is a first option, for example, if 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 receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

[0271] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0272] In an embodiment of the present application, a terminal device receives RRC signaling and MAC CE signaling sent by a network device, and if the value option of the RRC signaling is the first option, determines its data transmission scheme as the CJT scheme. Thus, a technical solution for determining a transmission scheme of a terminal device is provided. In addition, if MAC CE is used for the TCI state of PDSCH, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0273] Example 17

[0274] Referring to Figure 19, Figure 19 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 19, the method includes the following steps:

[0275] S191: The network device transmits RRC signaling and MAC 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, where the first transmission scheme is the CJT scheme. The MAC CE signaling is used to set a TCI status of a PDSCH, where an i-th codepoint in a TCI field in a DCI indicates that the MAC CE includes at least three TCI status fields, where i is an integer.

[0276] In an embodiment of the present application, the network device may use RRC signaling to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, which are different from each other. The second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device may use MAC CE signaling to indicate TCI state configuration, thereby determining the QCL relationship of the antenna ports in the first transmission scheme and enabling correct signal reception and demodulation.

[0277] The RRC signaling has a name of repetitionScheme-r18 and may be used to indicate the first transmission scheme and / or the second transmission scheme. The value option of the RRC signaling may be {fdmSchemeA, fdmSchemeB, tdmSchemeA, cjtScheme}. cjtScheme represents a coherent joint transmission scheme. If the value option of the RRC signaling is cjtScheme, it indicates that the network device has configured the first transmission scheme and that the first transmission scheme is enabled, i.e., the terminal device can perform data transmission using the first transmission scheme. 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 has configured the second transmission scheme and that the second transmission scheme is enabled, i.e., the terminal device transmits data using the second transmission scheme.

[0278] Exemplarily, the value option of the RRC signaling may be represented by other values. For example, the first transmission scheme may be represented by a value option of 0. When the value option of the RRC signaling is 0, it indicates that the network device has configured 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 may be represented by a value option that is non-zero. When the value option of the RRC signaling is 1, 2, or 3, it indicates that the network device has configured 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 thereto.

[0279] When a MAC CE is used to configure the TCI state of a PDSCH and the i-th codepoint in the TCI field in the DCI indicates at least three TCI state fields, the MAC CE may include at least three TCI state fields corresponding to the TCI state configuration indicated by the i-th codepoint in the TCI field in the DCI, where i is the index of the codepoint in the TCI field in the DCI. A terminal device can determine the QCL relationship of antenna ports based on the TCI state fields carried in the MAC CE, and thereby correctly receive and demodulate signals.

[0280] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0281] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0282] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0283] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0284] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0285] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0286] For example, if the MAC CE signaling includes multiple second fields, the MAC CE may be as shown in Table 2 above.

[0287] S192: The terminal device receives RRC signaling and MAC CE signaling, and determines, according to the RRC signaling and MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0288] Specifically, after receiving the RRC signaling, the terminal device can determine a data transmission scheme according to a value option of the RRC signaling. Specifically, if the value option of the RRC signaling is the second option, for example, if 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 receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the value option of the RRC signaling is the third option, for example, if the value option of the RRC signaling is at least one of fdmSchemeA, fdmSchemeB, and tdmSchemeA, or if the value option of the RRC signaling is 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 receive and / or transmit data using FDM and / or TDM in multi-station NCJT.

[0289] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0290] In an embodiment of the present application, a terminal device receives RRC signaling and MAC CE signaling sent by a network device, and determines its data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the value options of the RRC signaling. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. Furthermore, when MAC CE is used for the TCI state of PDSCH, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0291] Example 18

[0292] Referring to Figure 20, Figure 20 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 20, the method includes the following steps:

[0293] S201: A network device transmits DCI and 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, and the first transmission scheme is a CJT scheme. The MAC CE signaling is used to set a TCI status of a PDSCH, and an i-th codepoint in the TCI field in the DCI indicates that the MAC CE includes at least three TCI status fields, where i is an integer.

[0294] In an embodiment of the present application, the network device may use DCI to indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme, which are different from each other. The second transmission scheme may include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device may send MAC CE signaling to indicate TCI state configuration, thereby determining the QCL relationship of the antenna ports in the first transmission scheme and enabling correct signal reception and demodulation.

[0295] The network device newly defines a first field in the DCI. The first field is used to indicate whether the data transmission scheme is the first transmission scheme and / or the second transmission scheme. The first field may be 1 bit, and the 1 bit may be a new 1 bit added to the DCI or an existing 1 bit in the DCI. For example, 1 bit in a reserved field in the DCI is set in the first field. The embodiment of the present application is not limited thereto.

[0296] Exemplarily, when the value of the first field is a first value, the first field may be used to indicate that the data transmission scheme is the first transmission scheme. When the value of the first field is a second value, the first field may be used to indicate that the data transmission scheme is the second transmission scheme. For example, when the value of the first field is 0, the first field may be used to indicate that the data transmission scheme is the first transmission scheme, and when the value of the first field is 1, the first field may be used to indicate that the data transmission scheme is the second transmission scheme. As another example, when the value of the first field is 1, the first field may be used to indicate that the data transmission scheme is the first transmission scheme, and when the value of the first field is 0, the first field may be used to indicate that the data transmission scheme is the second transmission scheme.

[0297] Note that the first field in the present application may be 2 bits, 3 bits, 4 bits, etc. The manner in which different values ​​indicate that the data transmission scheme is the first transmission scheme and / or the second transmission scheme is not limited in the embodiments of the present application.

[0298] When a MAC CE is used to configure the TCI state of a PDSCH and the i-th codepoint in the TCI field in the DCI indicates at least three TCI state fields, the MAC CE may include at least three TCI state fields corresponding to the TCI state configuration indicated by the i-th codepoint in the TCI field in the DCI, where i is the index of the codepoint in the TCI field in the DCI. A terminal device can determine the QCL relationship of antenna ports based on the TCI state fields carried in the MAC CE, and thereby correctly receive and demodulate signals.

[0299] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0300] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0301] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0302] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0303] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0304] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0305] For example, if the MAC CE signaling includes multiple second fields, the MAC CE may be as shown in Table 2 above.

[0306] S202: The terminal device receives DCI and MAC CE signaling, and determines, based on the DCI and MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0307] Specifically, after receiving the DCI, the terminal device can determine its data transmission scheme based on a first field in the DCI. Specifically, if the first field indicates a first transmission scheme, the terminal device determines that its data transmission scheme is the first transmission scheme, that is, the terminal device can receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the first field indicates a second transmission scheme, the terminal device determines that its data transmission scheme is the second transmission scheme, and the terminal device can receive and / or transmit data using FDM and / or TDM in a multi-station NCJT.

[0308] For example, if the first field in the DCI has a value of 1 and is used to indicate a first transmission scheme, the terminal device determines that the data transmission scheme is a CJT scheme. If the first field in the DCI has a value of 0 and is used to indicate a second transmission scheme, the terminal device determines that the data transmission scheme is an FDM transmission scheme and / or a TDM transmission scheme.

[0309] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0310] In an embodiment of the present application, the terminal device DCIand MAC CE signaling, and determines that the data transmission scheme is the first transmission scheme and / or the second transmission scheme based on the first field in the DCI. Thus, a technical solution for determining the transmission scheme of the terminal device is provided. Furthermore, when the MAC CE is used for the TCI state of the PDSCH, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in the MAC CE, so as to correctly receive and demodulate the signal.

[0311] Example 19

[0312] Referring to Figure 21, Figure 21 is a flowchart illustrating another transmission scheme determination method according to an embodiment of the present application, which is applied to the wireless communication system shown in Figure 1. As shown in Figure 21, the method includes the following steps:

[0313] S211: The network device sends DCI and MAC CE signaling. The DCI includes a TCI status, and the TCI status is indicated by a TCI field in the DCI. The MAC CE signaling is used to set the TCI status of the PDSCH, and the i-th codepoint in the TCI field in the DCI indicates that the MAC CE includes at least three TCI status fields, where i is an integer.

[0314] In an embodiment of the present application, the network device can indicate that the data transmission scheme of the terminal device is a first transmission scheme and / or a second transmission scheme through the TCI state indicated by the DCI. The first transmission scheme is a CJT scheme, which is different from the first transmission scheme and the second transmission scheme. The second transmission scheme can include a multi-station NCJT FDM transmission scheme and a multi-station NCJT TDM transmission scheme, such as fdmSchemeA, fdmSchemeB, and tdmSchemeA. At the same time, the network device can indicate the TCI state setting by sending MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme and correctly receiving and demodulating signals.

[0315] The TCI field in the DCI can indicate one or more TCI states, and depending on the number of TCI states, the network device can indicate the data transmission scheme to be used by the terminal device.

[0316] When a MAC CE is used to configure the TCI state of the PDSCH and the i-th codepoint in the TCI field in the DCI indicates at least three TCI state fields, the MAC CE may include at least three TCI state fields corresponding to the TCI state configuration indicated by the i-th codepoint in the TCI field in the DCI, where i is the index of the codepoint in the TCI field in the DCI. The terminal device can determine the QCL relationship of the antenna ports based on the TCI state fields indicated by the MAC CE, and thereby correctly receive and demodulate signals.

[0317] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, which is the byte following the byte in which the second field is located.

[0318] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the first byte is present, and the first byte is the byte following the byte in which the second field is located.

[0319] When the value of the second field is a first value, the second field can be used to indicate that the first byte includes a TCI status field, and when the value of the second field is a second value, the second field can be used to indicate that the first byte does not include a TCI status field, or the second field can be used to indicate that the first byte does not exist.

[0320] Furthermore, the second field may be 1 bit. For example, if the value of the second field is 0, the second field 2 The second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 1, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present. As another example, if the value of the second field is 1, the second field may be used to indicate that the first byte includes a TCI status field. If the value of the second field is 0, the second field may be used to indicate that the first byte does not include a TCI status field, or the second field may be used to indicate that the first byte is not present.

[0321] For example, the second field in the present application may be 2 bits, 3 bits, 4 bits, etc., and the manner of indicating whether the first byte includes a TCI status field according to different values ​​is not limited in the embodiments of the present application.

[0322] The second field may be a new field added in the MAC CE or an existing field in the MAC CE, for example, one or more bits in the reserved field in the MAC CE are set in the second field, but the embodiment of the present application is not limited thereto.

[0323] For example, if the MAC CE signaling includes multiple second fields, the MAC CE may be as shown in Table 2 above.

[0324] S212: The terminal device receives DCI and MAC CE signaling, and determines, based on the DCI and MAC CE, that the data transmission scheme is the first transmission scheme and / or the second transmission scheme.

[0325] 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.

[0326] In an embodiment of the present application, the terminal device's determination that the data transmission scheme is the first transmission scheme or the second transmission scheme according to the number of TCI states indicated by the TCI field in the DCI includes the following: If the number of TCI states indicated by the DCI is equal to or greater than a first threshold, the terminal device determines that the data transmission scheme is the first transmission scheme; If the number of TCI states indicated by the DCI is less than the first threshold, the terminal device determines that the data transmission scheme is the second transmission scheme.

[0327] Specifically, the CJT scheme may be associated with at least two TCI states, and the first threshold may be 2. Therefore, if the number of TCI states indicated by the DCI is two or more, the terminal device may determine that its data transmission scheme is the first transmission scheme and may receive and transmit data using a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme. If the number of TCI states indicated by the DCI is less than two, the terminal device may determine that its data transmission scheme is the second transmission scheme and may receive and / or transmit data using FDM and / or TDM in multi-station NCJT.

[0328] For example, if the first field in the DCI has a value of 1 and is used to indicate a first transmission scheme, the terminal device determines that the data transmission scheme is a CJT scheme. If the first field in the DCI has a value of 0 and is used to indicate a second transmission scheme, the terminal device determines that the data transmission scheme is an FDM transmission scheme and / or a TDM transmission scheme.

[0329] Furthermore, after receiving the MAC CE signaling, the terminal device determines the TCI status setting of the first transmission scheme based on the TCI status field carried in the MAC CE signaling, thereby determining the QCL relationship of the antenna ports in the first transmission scheme, and can correctly receive and demodulate the signal.

[0330] In an embodiment of the present application, a terminal device receives DCI and MAC CE signaling sent by a network device, and determines its data transmission scheme as the first transmission scheme and / or the second transmission scheme according to the number of TCI states indicated by the DCI. Thus, a technical solution for determining the transmission scheme of a terminal device is provided. Furthermore, when MAC CE is used for the TCI state of PDSCH, the terminal device can determine the QCL relationship of the antenna ports based on the TCI state field carried in MAC CE, so as to correctly receive and demodulate signals.

[0331] The above has mainly introduced the embodiments of the present application from the perspective of the implementation process of the method. To realize the above functions, the network device includes corresponding hardware structures and / or software modules that perform each function. In combination with each exemplary unit and algorithm step described in the embodiments of this specification, it is clear to those skilled in the art that the present application can be realized by hardware or a combination of hardware and computer software. Whether a function is performed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may realize the described functions using different methods for different specific applications, but these implementations should not be considered beyond the scope of the present application.

[0332] 22, which is a block diagram illustrating functional units constituting an apparatus 2200 for determining a transmission scheme according to an embodiment of the present application. The apparatus 2200 may be applied to a terminal device or a network device. The apparatus 2200 includes a transceiver unit 2210 and a processing unit 2220.

[0333] In one possible embodiment, the device 2200 comprises: Confirmed The terminal device is configured to perform each process and step corresponding to the method.

[0334] The transceiver unit 2210 is configured to receive a first message. The processing unit 2220 is configured to determine a data transmission scheme based on the first message, the data transmission scheme including a first transmission scheme, the first transmission scheme being a coherent joint transmission (CJT) scheme.

[0335] Optionally, the first message includes at least one of radio resource control (RRC) signaling, media access control (MAC) signaling, and downlink control information (DCI).

[0336] Optionally, the first message is RRC signaling. The processing unit 2220 configured to determine a data transmission scheme based on the first message is specifically configured to: determine that the data transmission scheme is the first transmission scheme when a value option of the RRC signaling is the first option.

[0337] Optionally, the data transmission scheme further includes a second transmission scheme.

[0338] The processing unit 2220 configured to determine the data transmission scheme based on the first message is specifically configured to determine that the data transmission scheme is the first transmission scheme and / or the second transmission scheme according to a value option of the RRC signaling.

[0339] Optionally, the first message is a DCI, the DCI including a first field, the first field being used to indicate the first transmission scheme and / or the second transmission scheme.

[0340] Optionally, the processing unit 2220 configured to determine the data transmission scheme based on the first message is specifically configured to determine that the data transmission scheme is the first transmission scheme and / or the second transmission scheme according to the value of the first field.

[0341] Optionally, the first message is a DCI. The processing unit 2220 configured to determine a data transmission scheme based on the first message is specifically configured to determine that the data transmission scheme is the first transmission scheme or the second transmission scheme according to the number of transmission configuration indication states (TCI states) indicated by the DCI.

[0342] Optionally, the processing unit 2220 configured to determine whether the data transmission scheme is the first transmission scheme or the second transmission scheme according to the number of TCI states indicated by the DCI is specifically configured to determine that the data transmission scheme is the first transmission scheme if the number of TCI states indicated by the DCI is equal to or greater than a first threshold, and to determine that the data transmission scheme is the second transmission scheme if the number of TCI states indicated by the DCI is less than the first threshold.

[0343] Optionally, the first transmission scheme is associated with at least two TCI states.

[0344] Optionally, the first message is MAC CE signaling, and the MAC CE signaling includes at least three TCI status fields.

[0345] Optionally, the first message is MAC CE signaling. If the MAC CE signaling is used to set the TCI state of the control resource set (CORESET), the MAC CE signaling includes at least three TCI state fields.

[0346] Optionally, the first message is MAC CE signaling. When the MAC CE signaling is used to configure the TCI status of the PDSCH, the i-th codepoint in the TCI field in the DCI indicates that the MAC CE includes at least three TCI status fields, where i is an integer.

[0347] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, and the first byte is the byte following the byte in which the second field is located.

[0348] Optionally, the first transmission scheme includes a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

[0349] In another possible embodiment, the device 2200 is Confirmed The network device is configured to perform each process and step corresponding to the method.

[0350] The transceiver unit 2210 is configured to transmit a first message, the first message is used to determine a data transmission scheme, the data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent joint transmission (CJT) scheme.

[0351] Optionally, the first message includes at least one of radio resource control (RRC) signaling, media access control (MAC) signaling, and downlink control information (DCI).

[0352] Optionally, the first message is RRC signaling, and the RRC signaling is used to indicate that the data transmission scheme is the first transmission scheme.

[0353] Optionally, the data transmission scheme further includes a second transmission scheme.

[0354] Optionally, the first message is 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.

[0355] Optionally, the first message is a DCI, the DCI including a first field, the first field being used to indicate the first transmission scheme and / or the second transmission scheme.

[0356] Optionally, the first message is a DCI, the DCI includes a transmission configuration indication status (TCI status), and the TCI status is indicated by a TCI field in the DCI.

[0357] Optionally, if the number of TCI states indicated by the DCI is greater than or equal to a first threshold, the data transmission scheme is a first transmission scheme, and if the number of TCI states indicated by the DCI is less than the first threshold, the data transmission scheme is a second transmission scheme.

[0358] Optionally, the first transmission scheme is associated with at least two TCI states.

[0359] Optionally, the first message is MAC CE signaling, and the MAC CE signaling includes at least three TCI status fields.

[0360] Optionally, the first message is MAC CE signaling. When the MAC CE signaling is used to configure the TCI state of a control resource set (CORESET), the MAC CE signaling associated with at least one control resource set includes at least three TCI state fields.

[0361] Optionally, the first message is MAC CE signaling. When the MAC CE signaling is used to configure the TCI status of the PDSCH, the i-th codepoint in the TCI field in the DCI indicates that the MAC CE includes at least three TCI status fields, where i is an integer.

[0362] Optionally, the MAC CE signaling includes one or more second fields, which are used to indicate whether the TCI status field is included in the first byte, and the first byte is the byte following the byte in which the second field is located.

[0363] Optionally, the first transmission scheme includes a downlink coherent joint transmission scheme and / or an uplink coherent joint reception scheme.

[0364] It should be noted that the device 2200 in this specification is expressed as a functional unit. The term "unit" may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor) and memory for executing one or more software or firmware programs, a combinatorial logic circuit, and / or other suitable components that support the described functionality. In one alternative example, as will be understood by those skilled in the art, the device 2200 may specifically be the terminal device in the above embodiment, and the device 2200 may be used to perform each process and / or step corresponding to the terminal device in the above method embodiment. To avoid repetition, the description will be omitted here.

[0365] The device 2200 according to each of the above solutions has a function of implementing the steps performed by the terminal device in the above methods. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software may include one or more modules corresponding to the functions. For example, a transceiver may perform the transmission and reception operations in each method embodiment instead of the transceiver unit 2210, and a processor may perform the processing operations in each method embodiment instead of the processing unit 2220.

[0366] In an embodiment of the present application, the device 2200 may be a chip or a chip system, such as a system on chip (SOC), and accordingly, the detection unit may be a detection circuit of the chip, which is not limited here.

[0367] Referring to FIG. 23, FIG. 23 shows a block diagram of a cellular phone according to an embodiment of the present application. electronic equipment FIG. 1 is a schematic diagram showing the structure of the electronic equipment The system includes one or more processors, one or more memories, one or more communication interfaces, and one or more programs stored in the memories and configured to be executed by the one or more processors.

[0368] In one possible embodiment, the electronic device is a terminal device, and the program includes instructions for performing the following steps: receive a first message; and determine a data transmission scheme based on the first message, the data transmission scheme including a first transmission scheme, and the first transmission scheme being a coherent joint transmission scheme.

[0369] In another possible embodiment, the electronic device is a network device, and the program includes instructions for performing the following steps: send a first message, the first message is used to determine a data transmission scheme, the data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent cooperative transmission scheme.

[0370] All relevant content of each scene in the above method embodiments can be cited in the function description of the corresponding functional module, so the description will be omitted here.

[0371] The memory may include read-only memory and random access memory to provide instructions and data to the processor. A portion of the memory may further include non-volatile random access memory. For example, the memory may store device type information.

[0372] In an embodiment of the present application, the processor of the device may be a central processing unit (CPU), or the processor may be another general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

[0373] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes a relationship between related objects and indicates the existence of three types of relationships. For example, A and / or B indicates three situations: the presence of only A, the simultaneous presence of A and B, and the presence of only B, where A and B may be singular or plural. The symbol " / " generally indicates that the related objects before and after it are in an "or" relationship. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, "at least one of a, b, or c" can represent a, b, c, ab, ac, bc, or abc, where a, b, and c may be singular or plural.

[0374] Additionally, unless otherwise stated, terms indicating ordinal numbers such as "first" and "second" according to the embodiments of the present application are used to distinguish between multiple objects and do not limit the order, timing sequence, priority, or importance of the multiple objects. For example, "first information" and "second information" are used merely to distinguish between different pieces of information and do not indicate differences in the content, priority, transmission order, or importance of the two pieces of information.

[0375] In the implementation process, each step of the above method may be realized by an integrated logic circuit of hardware in a processor or by instructions in the form of software. The steps of the method disclosed in the embodiments of the present application can be directly executed and completed by a hardware processor, or can be executed and completed by a combination of hardware and software units in a processor. The software unit can be located in a storage medium well-known in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, or a register. The storage medium is located in the memory. The processor executes the instructions in the memory and completes the steps of the above method in cooperation with the hardware of the processor. To avoid repetition, detailed descriptions will not be given here.

[0376] An embodiment of the present application further provides a chip, wherein the chip is configured to receive a first message, and the chip is further configured to determine 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.

[0377] An embodiment of the present application further provides a chip module, the chip module including a transceiver component and a chip, the chip configured to receive a first message through the transceiver component, the chip configured to determine a data transmission scheme based on the first message, the data transmission scheme including a first transmission scheme, and the first transmission scheme being a coherent cooperative transmission scheme.

[0378] An embodiment of the present application further provides a chip, wherein the chip is configured to transmit a first message, the first message is used to determine a data transmission scheme, the data transmission scheme includes a first transmission scheme, and the first transmission scheme is a coherent joint transmission scheme.

[0379] An embodiment of the present application further provides a chip module, the chip module including a transceiver component and a chip, the chip being configured to transmit a first message through the transceiver component, the first message being used to determine a data transmission scheme, the data transmission scheme including a first transmission scheme, and the first transmission scheme being a coherent cooperative transmission scheme.

[0380] The embodiments of the present application relate to a computer. readable A storage medium is also provided. readable A computer program for electronic data exchange is stored on the storage medium, and the computer program causes a computer to perform some or all of the operations in any one of the method embodiments described above.

[0381] An embodiment of the present application further provides a computer program product including instructions, which, when executed on an electronic device, cause the electronic device to perform some or all of the operations of any one of the methods described in the above method embodiments.

[0382] An embodiment of the present application further provides a communication system, which includes the terminal device and / or the network device.

[0383] It should be noted that for simplicity, each of the method embodiments is expressed as a combination of a series of operations. However, it should be understood by those skilled in the art that the present application is not limited to the order of operations described, and that some steps may be performed in other orders or simultaneously based on the present application. It should also be understood by those skilled in the art that any of the embodiments described in the specification are preferred embodiments, and that such operations and modules are not necessarily required for the present application.

[0384] In the above embodiments, the description of each embodiment has its own focus, and for the parts of an embodiment that are not described in detail, reference can be made to the relevant descriptions of other embodiments.

[0385] It should be understood that in some embodiments of the present application, the disclosed device may be realized in other forms. For example, the above device embodiments are merely exemplary. For example, the division of the units described above is merely a division of logical functions, and actual implementations may have other division forms. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not implemented. Furthermore, the couplings, direct couplings, and communication connections shown or discussed may be indirect couplings or communication connections through several interfaces, devices, or units, and may be electrical or other forms.

[0386] Units described as separate components may or may not be physically separated. Components shown as units may or may not be physical units, i.e., they may be located in one place or may be distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the technical solution of this embodiment.

[0387] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist physically independently, or two or more units may be integrated into one unit. The integrated unit may be realized in the form of a hardware or software functional unit.

[0388] The integrated unit may be implemented in the form of a software functional unit and stored in a computer-readable recording medium when sold or used as an independent product. According to this understanding, an essential part of the technical solution of the present application, a part that contributes to the prior art, or all or part of the technical solution may be expressed as a software product. This computer software product is stored in a memory and includes a plurality of instructions for causing a computer device (such as a personal computer, a server, or a TRP) to execute all or part of the steps of the method of each embodiment of the present application. The memory includes various types of media capable of storing program code, such as a universal serial bus (USB) flash disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0389] Those skilled in the art will understand that some or all of the operations in the methods of the above embodiments can be achieved by a program instructing related hardware. The program can be stored in a computer-readable storage medium. The storage medium can include flash memory, ROM, RAM, magnetic disk, optical disk, etc.

[0390] The above is a detailed description of the embodiments of the present application. In this specification, specific examples are used to explain the principles and embodiments of the present application. The above description of the embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, those skilled in the art will appreciate that specific embodiments and application scope may vary based on the idea of ​​the present application. As stated above, the present specification should not be construed as limiting the present application.

Claims

1. 1. A method for determining a transmission scheme, comprising: A terminal device receives radio resource control (RRC) signaling and medium access control (MAC) control element (CE) signaling, the RRC signaling being used to indicate that a transmission scheme of the terminal device is a coherent joint transmission (CJT) scheme, and the MAC CE signaling indicating a transmission configuration indication state (TCI state); The terminal device determines a quasi-co-location (QCL) relationship of antenna ports in the CJT scheme based on the TCI state.

10. A method for determining a transmission scheme, comprising:

2. The MAC CE signaling includes at least three TCI status fields.

2. The method of claim 1, wherein the method comprises:

3. The MAC CE signaling includes one or more second fields, the second fields being used to indicate whether a TCI status field is included in a first byte, the first byte being the byte following the byte in which the second field is located.

2. The method of claim 1, wherein the method comprises:

4. The CJT scheme is associated with at least two TCI states, 2. The method of claim 1, wherein the method comprises:

5. The TCI state is a TCI state of a control resource set (CORESET).

2. The method of claim 1, wherein the method comprises:

6. The TCI state is a TCI state of a physical downlink shared channel (PDSCH).

2. The method of claim 1, wherein the method comprises:

7. 1. A method for determining a transmission scheme, comprising: The network device transmits radio resource control (RRC) signaling and medium access control (MAC) control element (CE) signaling; The RRC signaling is used to indicate that the transmission scheme of the terminal device is a coherent joint transmission (CJT) scheme, and the MAC CE signaling indicates a transmission configuration indication state (TCI state), which is used by the terminal device to determine a quasi-co-location (QCL) relationship of antenna ports in the CJT scheme.

10. A method for determining a transmission scheme, comprising:

8. The method of claim 7, wherein the MAC CE signaling includes at least three TCI status fields.

8. The method of claim 7, wherein the method comprises:

9. The MAC CE signaling includes one or more second fields, the second fields being used to indicate whether a TCI status field is included in a first byte, the first byte being the byte following the byte in which the second field is located.

8. The method of claim 7, wherein the method comprises:

10. The CJT scheme is associated with at least two TCI states.

8. The method of claim 7, wherein the method comprises:

11. The TCI state is a TCI state of a control resource set (CORESET).

8. The method of claim 7, wherein the method comprises:

12. The TCI state is a TCI state of a physical downlink shared channel (PDSCH).

8. The method of claim 7, wherein the method comprises:

13. An apparatus for determining a transmission scheme, comprising a transceiver unit and a processing unit, The transceiver unit is configured to receive radio resource control (RRC) signaling and medium access control (MAC) control element (CE) signaling, the RRC signaling being used to indicate that a transmission scheme of the terminal device is a coherent joint transmission (CJT) scheme, and a transmission configuration indication state (TCI state) being indicated by the MAC CE signaling; The processing unit is configured to determine a quasi-co-location (QCL) relationship of antenna ports in the CJT scheme based on the TCI state.

10. A device for determining a transmission scheme, comprising:

14. An apparatus for determining a transmission scheme, comprising a transceiver unit, The transceiver unit is configured to transmit radio resource control (RRC) signaling and medium access control (MAC) control element (CE) signaling, the RRC signaling being used to indicate that a transmission scheme of the terminal device is a coherent joint transmission (CJT) scheme, and the MAC CE signaling indicating a transmission configuration indication state (TCI state), the TCI state being used by the terminal device to determine a quasi-co-location (QCL) relationship of antenna ports in the CJT scheme.

10. A device for determining a transmission scheme, comprising:

15. An electronic device, a processor, a memory, a communication interface, and one or more programs; the one or more programs are stored in the memory and configured to be executed by the processor, the programs comprising instructions used to perform the operations of the method for determining a transmission scheme according to any one of claims 1 to 6 or the method for determining a transmission scheme according to any one of claims 7 to 12. An electronic device characterized by:

16. 1. A computer-readable storage medium, comprising: a computer program for electronic data exchange stored on the computer-readable storage medium, the computer program causing a computer to perform the operations of the method for determining a transmission scheme according to any one of claims 1 to 6 or the method for determining a transmission scheme according to any one of claims 7 to 12; A computer-readable storage medium comprising:

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