TCI (Transmission Configuration Indicator) state indication method and device

Abstract

The embodiment of the invention discloses a transmission configuration indication TCI state indication method and device, and the method comprises the steps: receiving downlink channel control information DCI sent by network equipment, the DCI comprises a first information domain and / or a second information domain, the first information domain is used for mapping a transmission configuration indication TCI state group activated by terminal equipment, and the second information domain is used for mapping a transmission configuration indication TCI state group activated by the terminal equipment; the second information domain is used for indicating whether to start at least one TCI state included in the TCI state group corresponding to the first information domain, so that the DCI can support mapping of more TCI states and can support faster switching of TRP and TCI state indication at the same time, further, the terminal equipment can guarantee connection and service reliability in frequent switching, and the user experience is improved. And the system communication efficiency is effectively improved.

Description

Transmission Configuration Indication (TCI) status indication method and device Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for transmission configuration indication (TCI) status indication. Background Art

[0002] Multiple Input Multiple Output (MIMO) technology has ushered in a new era in the development and utilization of spatial resources in mobile communication systems. Distributed MIMO, developed based on traditional MIMO technology, expands its application scope. For terminals, distributed MIMO technology means that multiple transmission and reception points (TRPs) simultaneously provide service to the terminal, eliminating the need for cell handovers.

[0003] In related technologies, when multiple TRPs are jointly transmitted, it is necessary to indicate the corresponding beam information of different TRPs respectively. The downlink beam information is indicated by the Transmission Configuration Indication (TCI) status. However, in the future, as distributed MIMO technology becomes increasingly mature, the number of TRPs for joint transmission will increase, and as the communication frequency increases, the density of the network will also increase. The TRP serving the terminal or its corresponding beam may be frequently switched. How to support this frequent switching is a problem that needs to be solved.

[0004] Summary of the Invention

[0005] The first embodiment of the present application provides a transmission configuration indication (TCI) status indication method, which is executed by a terminal device and includes:

[0006] Receive downlink channel control information DCI sent by a network device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

[0007] A second aspect of the present application provides a method for indicating a transmission configuration indication (TCI) status. The method is performed by a network device and includes:

[0008] Send downlink channel control information DCI to the terminal device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

[0009] In a third aspect, an embodiment of the present application provides a transmission configuration indication (TCI) status indication device, comprising:

[0010] A transceiver unit is used to receive downlink channel control information DCI sent by a network device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

[0011] In a fourth aspect, an embodiment of the present application provides a transmission configuration indication (TCI) status indication device, the device comprising:

[0012] A transceiver unit, used to send downlink channel control information DCI to a terminal device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

[0013] The fifth aspect embodiment of the present application proposes a communication device, which includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device executes the transmission configuration indication TCI status indication method described in the first aspect embodiment above.

[0014] The sixth aspect embodiment of the present application proposes a communication device, which includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device executes the transmission configuration indication TCI status indication method described in the above-mentioned second aspect embodiment.

[0015] The seventh aspect embodiment of the present application proposes a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the transmission configuration indication TCI status indication method described in the first aspect embodiment above.

[0016] The eighth aspect embodiment of the present application proposes a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the transmission configuration indication TCI status indication method described in the second aspect embodiment above.

[0017] The ninth aspect embodiment of the present application proposes a computer-readable storage medium for storing instructions. When the instructions are executed, the transmission configuration indication TCI status indication method described in the first aspect embodiment is implemented.

[0018] The tenth aspect embodiment of the present application proposes a computer-readable storage medium for storing instructions. When the instructions are executed, the transmission configuration indication TCI status indication method described in the above-mentioned second aspect embodiment is implemented.

[0019] The eleventh embodiment of the present application proposes a computer program, which, when running on a computer, enables the computer to execute the transmission configuration indication TCI status indication method described in the first embodiment.

[0020] The twelfth aspect embodiment of the present application proposes a computer program, which, when running on a computer, enables the computer to execute the transmission configuration indication TCI status indication method described in the second aspect embodiment.

[0021] An embodiment of the present application provides a transmission configuration indication TCI status indication method and device, which receives downlink channel control information DCI sent by a network device, and the DCI includes a first information field and / or a second information field. The first information field is used to map the transmission configuration indication TCI status group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI status group corresponding to the first information field, so that the DCI can support the mapping of more TCI states, and at the same time can support faster switching of TRP and TCI status indications, further enabling the terminal device to ensure the reliability of connection and service in frequent switching, and effectively improve the system communication efficiency.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0024] FIG1 is a flow chart of a method for indicating a transmission configuration indication (TCI) status according to an embodiment of the present application;

[0025] FIG2 is a flow chart of a method for indicating a transmission configuration indication (TCI) status provided in an embodiment of the present application;

[0026] FIG3a is a schematic diagram of a TCI state group in which a MAC CE indicates activation, provided by an embodiment of the present application;

[0027] FIG3 b is a schematic diagram of a DCI information field provided in an embodiment of the present application;

[0028] FIG4 is a flow chart of a method for indicating a transmission configuration indication (TCI) status according to an embodiment of the present application;

[0029] FIG5 is a flow chart of a method for indicating a transmission configuration indication (TCI) status provided in an embodiment of the present application;

[0030] FIG6 is a schematic structural diagram of a transmission configuration indication TCI status indication device provided in an embodiment of the present application;

[0031] 7 is a schematic structural diagram of a transmission configuration indication TCI status indication device provided in an embodiment of the present application;

[0032] FIG8 is a schematic structural diagram of another transmission configuration indication TCI status indication device provided in an embodiment of the present application;

[0033] FIG9 is a schematic structural diagram of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] For ease of understanding, the terms involved in this application are first explained:

[0035] A Transmission and Reception Point (TRP) or Transmit / Receive Point (TRP) corresponds to the serving cell or neighboring cell of a terminal device. A cell contains one or more TRPs. A TRP contains one or more panels, each of which contains one or more co-located antennas.

[0036] MIMO: Multiple Input Multiple Output;

[0037] PDCCH: Physical Downlink Control Channel, physical downlink control channel;

[0038] PDSCH: Physical Downlink Shared Channel, physical downlink shared channel;

[0039] PUCCH: Physical Uplink Control Channel, physical uplink control channel;

[0040] PUSCH: Physical Uplink Shared Channel, physical uplink shared channel;

[0041] DL: downlink, downlink;

[0042] UL: uplink, uplink;

[0043] TCI: Transmission Configuration Indication, transmission configuration indication;

[0044] DCI: Downlink Control Information, downlink control information;

[0045] RRC: Radio Resource Control;

[0046] CSI-RS: Channel State Information Reference Signal, channel state information reference signal;

[0047] DMRS: Demodulation Reference Signal, demodulation reference signal;

[0048] MAC CE: Medium Access Control Control Element, media access control layer control element (or control unit);

[0049] CJT: Coherent Joint Transmission, coherent joint transmission;

[0050] BWP: Bandwidth Part, bandwidth part;

[0051] CC: Component Carrier, component carrier;

[0052] CQI: Channel Quality Indication, channel quality indication;

[0053] PMI: PrecodingMatrixIndicator, precoding matrix indicator.

[0054] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numbers in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0055] The terms used in the embodiments of this application are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of this application. The singular forms "a" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0056] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present application, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at the time of" or "when" or "in response to a determination."

[0057] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0058] It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as Long Term Evolution (LTE) systems, fifth-generation mobile communication systems, 5G new air interface systems, or other future new mobile communication systems.

[0059] The network device in the embodiment of the present application is an entity on the network side for transmitting or receiving signals. For example, the network device may be an evolved NodeB (eNB), a transmission point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. The network device provided in the embodiment of the present application may be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit (Control Unit). The CU-DU structure may be used to split the protocol layer of a network device, such as a base station, and the functions of some protocol layers are placed in the CU for centralized control, while the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0060] The terminal device in the embodiment of the present application is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device can also be called a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The terminal device can be a car with communication function, a smart car, a mobile phone (Mobile Phone), a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (Industrial Control), a wireless terminal device in self-driving (Self-Driving), a wireless terminal device in remote medical surgery (Remote Medical Surgery), a wireless terminal device in smart grid (Smart Grid), a wireless terminal device in transportation safety (Transportation Safety), a wireless terminal device in smart city (Smart City), a wireless terminal device in smart home (Smart Home), etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

[0061] In this communication system, distributed MIMO technology can be employed, enabling multiple TRPs (Multi-TRPs) to simultaneously serve terminals. This eliminates the need for cell handoffs for the terminals. This eliminates the concept of cell boundaries, resulting in a smoother user experience. Furthermore, multiple TRPs serving a single terminal device ensure better signal quality, meeting the high-speed, high-capacity service requirements of these devices.

[0062] Because different TRPs are located in different positions in space, the large-scale fading corresponding to each TRP is significantly different. In the related art, when multiple TRPs are transmitted jointly, it is necessary to indicate the corresponding beam information of different TRPs separately. The downlink beam information is indicated by the TCI state. In the related art, the Radio Resources Control (RRC) can configure 128 TCI states for the terminal device, and then the Medium Access Control Control Element (MAC CE) will activate up to 8 TCI state groups, each group including up to two TCI states.

[0063] However, as distributed MIMO technology matures, the number of TRPs involved in joint transmission will increase. Furthermore, as communication frequencies increase, network density will also increase. Consequently, the TRPs serving terminals or their corresponding beams may frequently switch. Supporting this frequent switching is a challenge that needs to be addressed.

[0064] The following is a detailed introduction to the transmission configuration indication TCI status indication method and device provided in this application in conjunction with the accompanying drawings.

[0065] Please refer to Figure 1, which is a flow chart of a method for indicating a transmission configuration indicator (TCI) status provided by an embodiment of the present application. It should be noted that the method for indicating a transmission configuration indicator (TCI) status provided by an embodiment of the present application is performed by a terminal device. As shown in Figure 1, the method may include the following steps:

[0066] Step 101: Receive DCI sent by a network device, where the DCI includes a first information field and / or a second information field, where the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate whether at least one TCI state included in the TCI state group corresponding to the first information field is enabled.

[0067] In an embodiment of the present application, the terminal device is capable of receiving downlink control information (DCI) sent by a network device, wherein the DCI includes a first information field and / or a second information field, wherein the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate at least one TCI state in the TCI state group corresponding to the first information field.

[0068] It should be noted that in the embodiment of the present application, the enabled TCI state corresponding to the DCI is used for downlink transmission of the terminal device.

[0069] In some implementations, the terminal device is capable of receiving first signaling sent by the network device, where the first signaling is used to indicate to the terminal device whether the DCI includes the second information field.

[0070] It can be understood that, as a possible way, the DCI does not include the second information field, and the TCI state group corresponding to the first information field of the DCI includes at least one TCI state, all of which are used for downlink transmission of the terminal device.

[0071] As another possible embodiment, the DCI includes a second information field, and the second information field indicates at least one enabled TCI state in the TCI state group corresponding to the first information field of the DCI, which is used for downlink transmission of the terminal device.

[0072] In some embodiments, the terminal device is capable of receiving a medium access control layer control element (MAC CE) sent by a network device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

[0073] It can be understood that the number of TCI states included in each TCI state group can be the same or different.

[0074] In some implementations, the first information field includes multiple code points, each code point corresponding to a TCI state group indicated by the MAC CE.

[0075] The at least one code point included in the first information field means, for example, if the first information field has 3 bits, the first information field includes 8 code points, namely 000, 001, 010, 011, 100, 101, 110, and 111. Each code point may correspond to a TCI state group indicated by the MAC CE.

[0076] It can be understood that the TCI state group corresponding to the first information field refers to the TCI state group corresponding to the current code point of the first information field.

[0077] In some implementations, the number of code points included in the first information field is the same as the maximum number of TCI state groups activated indicated by the MAC CE.

[0078] In an embodiment of the present application, the second information field includes at least one first indication information, and the first indication information is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0079] That is, each first indication information included in the second information field corresponds to a TCI state in the TCI state group corresponding to the first information field, and each first indication information can indicate that the TCI state corresponding to it is enabled.

[0080] Optionally, each first indication information is 1-bit information, used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0081] In some implementations, the number of first indication information included in the second information field is the same as the maximum number of TCI states included in the TCI state group.

[0082] In some implementations, the first information field and / or the second information field may occupy the reserved information field in the DCI, or may occupy the newly added information field in the DCI. It is understood that the first information field may occupy the reserved information field in the DCI, and the second information field may occupy the newly added information field in the DCI; the first information field may occupy the newly added information field in the DCI, and the second information field may occupy the reserved information field in the DCI; the first information field and the second information field may both occupy the reserved information field in the DCI, or the first information field and the second information field may both occupy the newly added information field in the DCI, and so on.

[0083] In summary, by receiving the downlink channel control information DCI sent by the network device, the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field, so that the DCI can support the mapping of more TCI states, and at the same time support faster switching of TRP and TCI state indications, further enabling the terminal device to ensure the reliability of connection and service in frequent switching, and effectively improve the system communication efficiency.

[0084] Please refer to Figure 2, which is a flow chart of a method for indicating a transmission configuration indicator (TCI) status, provided in an embodiment of the present application. It should be noted that the method for indicating a transmission configuration indicator (TCI) status in an embodiment of the present application is executed by a terminal device. As shown in Figure 2, the method may include the following steps:

[0085] Step 201: Receive a MAC CE sent by a network device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

[0086] In an embodiment of the present application, the terminal device is capable of receiving a MAC CE sent by a network device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

[0087] Optionally, the network device can configure multiple TCI states for the terminal device through RRC, and the MAC CE is used to indicate at least one activated TCI state group among the configured multiple TCI states, and at least one TCI state included in each TCI state group.

[0088] As an example, the MAC CE indicates at least one activated TCI state group, and each TCI state group includes at least one TCI state as shown in FIG3a. In FIG3a, C0 is a TCI state group activated by the terminal device, and the TCI state group includes M TCI states, which are TCI state ID 0,1 、TCI state ID 0,2 ...TCI state ID 0,M Similarly, C N A TCI state group activated for the terminal device, the TCI state group includes L TCI states, which are TCI state ID 0N,1 、TCI state ID N,2 ...TCI state ID N,L . Among them, M, L, and N are all positive integers, and the values ​​of M and L can be the same or different.

[0089] In the embodiment of the present application, each TCI state in the TCI state group is used for a different TRP.

[0090] Step 202: Receive the DCI sent by the network device, where the DCI includes a first information field and / or a second information field, where the first information field is used to map the TCI status group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI status included in the TCI status group corresponding to the first information field.

[0091] In an embodiment of the present application, the terminal device is capable of receiving downlink control information DCI sent by a network device, and the DCI includes a first information field and / or a second information field, wherein the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate at least one TCI state in the TCI state group corresponding to the first information field.

[0092] It should be noted that in the embodiment of the present application, the enabled TCI state corresponding to the DCI is used for downlink transmission of the terminal device.

[0093] In some implementations, the terminal device is capable of receiving first signaling sent by the network device, where the first signaling is used to indicate to the terminal device whether the DCI includes the second information field.

[0094] It can be understood that, as a possible way, the DCI does not include the second information field, and the TCI state group corresponding to the first information field of the DCI includes at least one TCI state, all of which are used for downlink transmission of the terminal device.

[0095] As another possible embodiment, the DCI includes a second information field, and the second information field indicates at least one enabled TCI state in the TCI state group corresponding to the first information field of the DCI, which is used for downlink transmission of the terminal device.

[0096] In an embodiment of the present application, each TCI state included in the TCI state group corresponding to the first information domain corresponds to a different TRP, that is, each enabled TCI state is used for downlink transmission between a different TRP and the terminal device.

[0097] In an embodiment of the present application, the first information field includes multiple code points, each code point corresponds to a TCI state group indicated by the MAC CE.

[0098] The at least one code point included in the first information field means, for example, if the first information field has 3 bits, the first information field includes 8 code points, namely 000, 001, 010, 011, 100, 101, 110, and 111. Each code point may correspond to a TCI state group indicated by the MAC CE.

[0099] It can be understood that the TCI state group corresponding to the first information field refers to the TCI state group corresponding to the current code point of the first information field.

[0100] In some implementations, the number of code points included in the first information field is the same as the maximum number of TCI state groups activated indicated by the MAC CE.

[0101] That is, for example, if the first information field has K bits, then the first information field includes 2 K code points, the MAC CE can indicate up to 2 K Each code point can be mapped to an activated TCI state group indicated by the MAC CE.

[0102] In an embodiment of the present application, the second information field includes at least one first indication information, and the first indication information is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0103] That is, each first indication information included in the second information field corresponds to a TCI state in the TCI state group corresponding to the first information field, and each first indication information can indicate that the TCI state corresponding to it is enabled.

[0104] Optionally, each first indication information is 1-bit information, used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0105] Optionally, when the first indication information is set to "0", it indicates that the TCI state corresponding to the first indication information is not enabled, and when the first indication information is set to "1", it indicates that the TCI state corresponding to the first indication information is enabled; or when the first indication information is set to "0", it indicates that the TCI state corresponding to the first indication information is enabled, and when the first indication information is set to "1", it indicates that the TCI state corresponding to the first indication information is not enabled.

[0106] In some implementations, the number of first indication information included in the second information field is the same as the maximum number of TCI states included in the TCI state group.

[0107] That is, for example, if the second information field has M bits, each activated TCI state group indicated by the MAC CE includes at most M TCI states. The M bits are M first indication information, each first indication information is 1 bit, and is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0108] Optionally, a sequential indication principle may be adopted, that is, the first first indication information (first bit) of the second information field corresponds to the first TCI state in the TCI state group corresponding to the first information field.

[0109] Optionally, when the first indication information is set to "0", it indicates that the TCI state corresponding to the first indication information is not enabled, and when the first indication information is set to "1", it indicates that the TCI state corresponding to the first indication information is enabled; alternatively, when the first indication information is set to "0", it indicates that the TCI state corresponding to the first indication information is enabled, and when the first indication information is set to "1", it indicates that the TCI state corresponding to the first indication information is not enabled.

[0110] Optionally, if the number of TCI states included in the TCI state group corresponding to the first information field is L, and L < M, then the first L bits or the last L bits in the second information field can be used to indicate whether the L TCI states are enabled, and the remaining M - L + 1 bits in the second information field that are not used as the first indication information can be all set to "0" or set to "1".

[0111] As an example, the first information field and the second information field of the DCI can be as shown in Figure 3b. The first information field has K bits, and the second information field has M bits. The terminal device can receive a first signaling sent by the network device, and the first signaling can indicate whether the DCI includes the second information field. Since the first information field has K bits, the first information field includes 2 K code points, and the MAC CE can indicate at most 2 K activated TCI state groups. Each code point can be mapped to an activated TCI state group indicated by the MAC CE. The second information field has M bits, and each activated TCI state group indicated by the MAC CE includes at most M TCI states. The M bits are M first indication information, and each first indication information is 1 bit, which is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0112] It should be noted that in the embodiments of this application, K, L, and M are all positive integers.

[0113] In some embodiments, the first information field and / or the second information field can occupy the reserved information field in the DCI, or can occupy the newly added information field in the DCI. It can be understood that it can be that the first information field occupies the reserved information field in the DCI and the second information field occupies the newly added information field in the DCI; or it can be that the first information field occupies the newly added information field in the DCI and the second information field occupies the reserved information field in the DCI; it can also be that both the first information field and the second information field occupy the reserved information field in the DCI, or both the first information field and the second information field occupy the newly added information field in the DCI, etc.

[0114] As an example, the K bits of the first information field and / or the M bits of the second information field may occupy the reserved bits in the DCI, or may occupy the newly added bits in the DCI. For example, the K bits of the first information field may occupy the reserved bits in the DCI, and the M bits of the second information field may occupy the newly added bits in the DCI; the K bits of the first information field may occupy the newly added bits in the DCI, and the M bits of the second information field may occupy the reserved bits in the DCI; the K bits of the first information field and the M bits of the second information field may both occupy the reserved bits in the DCI, or the K bits of the first information field and the M bits of the second information field may both occupy the newly added bits in the DCI.

[0115] In summary, by receiving the MAC CE sent by the network device, the MAC CE is used to indicate at least one TCI state group activated by the terminal device, and at least one TCI state included in each TCI state group, and receiving the DCI sent by the network device, the DCI includes a first information field and / or a second information field, the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field, so that the DCI can support the mapping of more TCI states, and at the same time can support faster switching of TRP and TCI state indications, further enabling the terminal device to ensure the reliability of connection and service in frequent switching, and effectively improve the system communication efficiency.

[0116] Please refer to Figure 4, which is a flow chart of a method for indicating a transmission configuration indicator (TCI) status, provided in an embodiment of the present application. It should be noted that the method for indicating a transmission configuration indicator (TCI) status in an embodiment of the present application is performed by a network device. As shown in Figure 4, the method may include the following steps:

[0117] Step 401: Send DCI to the terminal device, where the DCI includes a first information field and / or a second information field. The first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

[0118] In an embodiment of the present application, the network device is capable of sending downlink control information DCI to the terminal device, and the DCI includes a first information field and / or a second information field, wherein the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate at least one TCI state in the TCI state group corresponding to the first information field.

[0119] It should be noted that in the embodiment of the present application, the enabled TCI state corresponding to the DCI is used for downlink transmission of the terminal device.

[0120] In some implementations, the network device can send a first signaling to the terminal device, where the first signaling is used to instruct the terminal device whether the DCI includes the second information field.

[0121] It can be understood that, as a possible way, the DCI does not include the second information field, and the TCI state group corresponding to the first information field of the DCI includes at least one TCI state, all of which are used for downlink transmission of the terminal device.

[0122] As another possible embodiment, the DCI includes a second information field, and the second information field indicates at least one enabled TCI state in the TCI state group corresponding to the first information field of the DCI, which is used for downlink transmission of the terminal device.

[0123] In some embodiments, the network device is capable of sending a media access control layer control element MAC CE to the terminal device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

[0124] It can be understood that the number of TCI states included in each TCI state group can be the same or different.

[0125] In some implementations, the first information field includes multiple code points, each code point corresponding to a TCI state group indicated by the MAC CE.

[0126] The at least one code point included in the first information field means, for example, if the first information field has 3 bits, the first information field includes 8 code points, namely 000, 001, 010, 011, 100, 101, 110, and 111. Each code point may correspond to a TCI state group indicated by the MAC CE.

[0127] It can be understood that the TCI state group corresponding to the first information field refers to the TCI state group corresponding to the current code point of the first information field.

[0128] In some implementations, the number of code points included in the first information field is the same as the maximum number of TCI state groups activated indicated by the MAC CE.

[0129] In an embodiment of the present application, the second information field includes at least one first indication information, and the first indication information is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0130] That is, each first indication information included in the second information field corresponds to a TCI state in the TCI state group corresponding to the first information field, and each first indication information can indicate that the TCI state corresponding to it is enabled.

[0131] Optionally, each first indication information is 1-bit information, used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0132] In some implementations, the number of first indication information included in the second information field is the same as the maximum number of TCI states included in the TCI state group.

[0133] In some implementations, the first information field and / or the second information field may occupy the reserved information field in the DCI, or may occupy the newly added information field in the DCI. It is understood that the first information field may occupy the reserved information field in the DCI, and the second information field may occupy the newly added information field in the DCI; the first information field may occupy the newly added information field in the DCI, and the second information field may occupy the reserved information field in the DCI; the first information field and the second information field may both occupy the reserved information field in the DCI, or the first information field and the second information field may both occupy the newly added information field in the DCI, and so on.

[0134] In summary, by sending DCI to the terminal device, the DCI includes a first information field and / or a second information field, the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field, so that the DCI can support the mapping of more TCI states, and at the same time support faster switching of TRP and TCI state indications, further enabling the terminal device to ensure the reliability of connection and service in frequent switching, effectively improving the system communication efficiency.

[0135] Please refer to Figure 5, which is a flow chart of a method for indicating a transmission configuration indicator (TCI) status, provided in an embodiment of the present application. It should be noted that the method for indicating a transmission configuration indicator (TCI) status in an embodiment of the present application is performed by a network device. As shown in Figure 5, the method may include the following steps:

[0136] Step 501: Send a MAC CE to a terminal device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

[0137] In an embodiment of the present application, the network device is capable of sending a MAC CE to the terminal device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

[0138] Optionally, the network device can configure multiple TCI states for the terminal device through RRC, and the MAC CE is used to indicate at least one activated TCI state group among the configured multiple TCI states, and at least one TCI state included in each TCI state group.

[0139] As an example, the MAC CE indicates at least one activated TCI state group, and each TCI state group includes at least one TCI state as shown in FIG3a. In FIG3a, C0 is a TCI state group activated by the terminal device, and the TCI state group includes M TCI states, which are TCI state ID 0,1 、TCI state ID 0,2 ...TCI state ID 0,M Similarly, C N A TCI state group activated for the terminal device, the TCI state group includes L TCI states, which are TCI state ID 0N,1 、TCI state ID N,2 ...TCI state ID N,L . Among them, M, L, and N are all positive integers, and the values ​​of M and L can be the same or different.

[0140] In the embodiment of the present application, each TCI state in the TCI state group is used for a different TRP.

[0141] Step 502: Send DCI to the terminal device, where the DCI includes a first information field and / or a second information field, where the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

[0142] In an embodiment of the present application, the network device is capable of sending DCI to the terminal device, and the DCI includes a first information field and / or a second information field, wherein the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate at least one TCI state in the TCI state group corresponding to the first information field.

[0143] It should be noted that in the embodiment of the present application, the enabled TCI state corresponding to the DCI is used for downlink transmission of the terminal device.

[0144] In some implementations, the network device can send a first signaling to the terminal device, and instruct the terminal device via the first signaling whether the DCI includes the second information field.

[0145] It can be understood that, as a possible way, the DCI does not include the second information field, and the TCI state group corresponding to the first information field of the DCI includes at least one TCI state, all of which are used for downlink transmission of the terminal device.

[0146] As another possible embodiment, the DCI includes a second information field, and the second information field indicates at least one enabled TCI state in the TCI state group corresponding to the first information field of the DCI, which is used for downlink transmission of the terminal device.

[0147] In an embodiment of the present application, each TCI state included in the TCI state group corresponding to the first information domain corresponds to a different TRP, that is, each enabled TCI state is used for downlink transmission between a different TRP and the terminal device.

[0148] In an embodiment of the present application, the first information field includes multiple code points, each code point corresponds to a TCI state group indicated by the MAC CE.

[0149] The at least one code point included in the first information field means, for example, if the first information field has 3 bits, the first information field includes 8 code points, namely 000, 001, 010, 011, 100, 101, 110, and 111. Each code point may correspond to a TCI state group indicated by the MAC CE.

[0150] It can be understood that the TCI state group corresponding to the first information field refers to the TCI state group corresponding to the current code point of the first information field.

[0151] In some implementations, the number of code points included in the first information field is the same as the maximum number of TCI state groups activated indicated by the MAC CE.

[0152] That is, for example, if the first information field has K bits, then the first information field includes 2 K code points, the MAC CE can indicate up to 2 K Each code point can be mapped to an activated TCI state group indicated by the MAC CE.

[0153] In an embodiment of the present application, the second information field includes at least one first indication information, and the first indication information is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0154] That is, each first indication information included in the second information field corresponds to one TCI state in the TCI state group corresponding to the first information field, and each first indication information can indicate that the TCI state corresponding to it is enabled.

[0155] Optionally, each first indication information is 1-bit information, which is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0156] Optionally, when the first indication information is set to "0", it indicates that the TCI state corresponding to the first indication information is not enabled, and when the first indication information is set to "1", it indicates that the TCI state corresponding to the first indication information is enabled; alternatively, when the first indication information is set to "0", it indicates that the TCI state corresponding to the first indication information is enabled, and when the first indication information is set to "1", it indicates that the TCI state corresponding to the first indication information is not enabled.

[0157] In some embodiments, the number of first indication information included in the second information field is the same as the maximum number of TCI states included in the TCI state group.

[0158] That is, for example, if the second information field has M bits, each activated TCI state group indicated by the MAC CE includes at most M TCI states. The M bits are M first indication information, and each first indication information is 1 bit, which is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0159] Optionally, the sequential indication principle can be adopted, that is, the first first indication information (the first bit) of the second information field corresponds to the first TCI state in the TCI state group corresponding to the first information field.

[0160] Optionally, when the first indication information is set to "0", it indicates that the TCI state corresponding to the first indication information is not enabled, and when the first indication information is set to "1", it indicates that the TCI state corresponding to the first indication information is enabled; alternatively, when the first indication information is set to "0", it indicates that the TCI state corresponding to the first indication information is enabled, and when the first indication information is set to "1", it indicates that the TCI state corresponding to the first indication information is not enabled.

[0161] Optionally, if the number of TCI states included in the TCI state group corresponding to the first information field is L and L < M, then the first L bits or the last L bits in the second information field can be used to indicate whether the L TCI states are enabled, and the remaining M - L + 1 bits in the second information field that are not used as first indication information can be all set to "0" or set to "1".

[0162] As an example, the first information field and the second information field of the DCI may be as shown in FIG3b, wherein the first information field has K bits and the second information field has M bits. The terminal device can receive the first signaling sent by the network device, and the first signaling can indicate whether the DCI includes the second information field. The first information field has K bits, and the first information field includes 2 K code points, the MAC CE can indicate up to 2 K The second information field has M bits, and each activated TCI state group indicated by the MAC CE includes at most M TCI states. The M bits are M first indication information, each of which is 1 bit and is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0163] It should be noted that, in the embodiments of the present application, K, L, and M are all positive integers.

[0164] In some implementations, the first information field and / or the second information field may occupy the reserved information field in the DCI, or may occupy the newly added information field in the DCI. It is understood that the first information field may occupy the reserved information field in the DCI, and the second information field may occupy the newly added information field in the DCI; the first information field may occupy the newly added information field in the DCI, and the second information field may occupy the reserved information field in the DCI; the first information field and the second information field may both occupy the reserved information field in the DCI, or the first information field and the second information field may both occupy the newly added information field in the DCI, and so on.

[0165] As an example, the K bits of the first information field and / or the M bits of the second information field may occupy the reserved bits in the DCI, or may occupy the newly added bits in the DCI. For example, the K bits of the first information field may occupy the reserved bits in the DCI, and the M bits of the second information field may occupy the newly added bits in the DCI; the K bits of the first information field may occupy the newly added bits in the DCI, and the M bits of the second information field may occupy the reserved bits in the DCI; the K bits of the first information field and the M bits of the second information field may both occupy the reserved bits in the DCI, or the K bits of the first information field and the M bits of the second information field may both occupy the newly added bits in the DCI.

[0166] In summary, by sending a MAC CE to the terminal device, the MAC CE is used to indicate at least one TCI state group activated by the terminal device, and at least one TCI state included in each TCI state group, and sending a DCI to the terminal device, the DCI includes a first information field and / or a second information field, the first information field is used to map the TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field, so that the DCI can support the mapping of more TCI states, and at the same time can support faster switching of TRP and TCI state indications, further enabling the terminal device to ensure the reliability of connection and service in frequent switching, and effectively improve the system communication efficiency.

[0167] Corresponding to the transmission configuration indication TCI status indication method provided in the above-mentioned embodiments, the present application also provides a transmission configuration indication TCI status indication device. Since the transmission configuration indication TCI status indication device provided in the embodiments of the present application corresponds to the methods provided in the above-mentioned embodiments, the implementation method of the transmission configuration indication TCI status indication method is also applicable to the transmission configuration indication TCI status indication device provided in the following embodiments, and will not be described in detail in the following embodiments.

[0168] Please refer to Figure 6, which is a structural diagram of a transmission configuration indication TCI status indication device provided in an embodiment of the present application.

[0169] As shown in FIG6 , the transmission configuration indication TCI status indication device 600 includes: a transceiver unit 610.

[0170] The transceiver unit 610 is used to receive downlink channel control information DCI sent by the network device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

[0171] Optionally, the transceiver unit 610 is further used to: receive a media access control layer control element MAC CE sent by the network device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

[0172] Optionally, the first information field includes multiple code points, each code point corresponds to a TCI state group indicated by the MAC CE.

[0173] Optionally, the number of code points included in the first information field is the same as the maximum number of TCI state groups activated indicated by the MAC CE.

[0174] Optionally, the second information field includes at least one first indication information, and the first indication information is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0175] Optionally, the number of first indication information included in the second information field is the same as the maximum number of TCI states included in the TCI state group.

[0176] Optionally, the transceiver unit 610 is further used to: receive first signaling sent by the network device, where the first signaling is used to indicate whether the DCI includes the second information field.

[0177] Optionally, the first information field and / or the second information field occupies a reserved information field of the DCI; or, the first information field and / or the second information field occupies a newly added information field of the DCI.

[0178] The transmission configuration indication TCI status indication device of this embodiment can receive DCI sent by a network device, and the DCI includes a first information field and / or a second information field. The first information field is used to map the TCI status group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI status group corresponding to the first information field, so that the DCI can support the mapping of more TCI states and support faster switching of TRP and TCI status indications, further enabling the terminal device to ensure the reliability of connection and service in frequent switching, and effectively improve the system communication efficiency.

[0179] Please refer to Figure 7, which is a structural diagram of a transmission configuration indication TCI status indication device provided in an embodiment of the present application.

[0180] As shown in FIG7 , the transmission configuration indication TCI status indication device 700 includes: a transceiver unit 710.

[0181] The transceiver unit 710 sends downlink channel control information DCI to the terminal device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

[0182] Optionally, the transceiver unit 710 is further used to: send a media access control layer control element MAC CE to the terminal device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

[0183] Optionally, the first information field includes multiple code points, each code point corresponds to a TCI state group indicated by the MAC CE.

[0184] Optionally, the number of code points included in the first information field is the same as the maximum number of TCI state groups activated indicated by the MAC CE.

[0185] Optionally, the second information field includes at least one first indication information, and the first indication information is used to indicate whether the TCI state corresponding to the first indication information is enabled.

[0186] Optionally, the number of first indication information included in the second information field is the same as the maximum number of TCI states included in the TCI state group.

[0187] Optionally, the transceiver unit 710 is further used to: send a first signaling to the terminal device, where the first signaling is used to indicate whether the DCI includes the second information field.

[0188] Optionally, the first information field and / or the second information field occupies a reserved information field of the DCI; or, the first information field and / or the second information field occupies a newly added information field of the DCI.

[0189] The transmission configuration indication TCI status indication device of this embodiment can send DCI to the terminal device, and the DCI includes a first information field and / or a second information field. The first information field is used to map the TCI status group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI status included in the TCI status group corresponding to the first information field, so that the DCI can support the mapping of more TCI states and support faster switching of TRP and TCI status indications, further enabling the terminal device to ensure the reliability of connection and service in frequent switching, and effectively improve the system communication efficiency.

[0190] In order to implement the above embodiments, the embodiments of the present application also propose a communication device, including: a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device executes the method shown in the embodiments of Figures 1 to 2.

[0191] In order to implement the above embodiments, the embodiments of the present application also propose a communication device, including: a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device executes the method shown in the embodiments of Figures 4 to 5.

[0192] In order to implement the above embodiments, the embodiments of the present application also propose a communication device, including: a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to execute the method shown in the embodiments of Figures 1 to 2.

[0193] In order to implement the above embodiments, the embodiments of the present application also propose a communication device, including: a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to execute the method shown in the embodiments of Figures 4 to 5.

[0194] Please refer to Figure 8, which is a schematic diagram of the structure of another transmission configuration indicator (TCI) status indication device provided in an embodiment of the present disclosure. Transmission configuration indicator (TCI) status indication device 800 can be a network device or a terminal device, or a chip, chip system, or processor that supports the network device in implementing the above-mentioned method, or a chip, chip system, or processor that supports the terminal device in implementing the above-mentioned method. This device can be used to implement the method described in the above-mentioned method embodiment. For details, please refer to the description of the above-mentioned method embodiment.

[0195] The transmission configuration indicator (TCI) status indicating device 800 may include one or more processors 801. Processor 801 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit (CPU). The baseband processor may be used to process communication protocols and communication data, and the CPU may be used to control the transmission configuration indicator (TCI) status indicating device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0196] Optionally, the transmission configuration indication (TCI) status indication device 800 may further include one or more memories 802, on which a computer program 803 may be stored. The processor 801 executes the computer program 803, causing the transmission configuration indication (TCI) status indication device 800 to perform the method described in the above method embodiment. The computer program 803 may be fixed in the processor 801. In this case, the processor 801 may be implemented by hardware.

[0197] Optionally, data may also be stored in the memory 802. The transmission configuration indication TCI status indicating device 700 and the memory 802 may be provided separately or integrated together.

[0198] Optionally, the transmission configuration indicator (TCI) status indication device 800 may further include a transceiver 805 and an antenna 806. The transceiver 805 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is configured to implement transceiver functions. The transceiver 705 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function.

[0199] Optionally, the transmission configuration indication TCI status indication device 800 may further include one or more interface circuits 807. The interface circuit 807 is configured to receive code instructions and transmit them to the processor 801. The processor 801 executes the code instructions to enable the transmission configuration indication TCI status indication device 800 to perform the method described in the above method embodiment.

[0200] The transmission configuration indication TCI status indication device 800 is a terminal device: the transceiver 805 is used to execute step 101 in Figure 1; steps 201-202 in Figure 2.

[0201] The transmission configuration indication TCI status indication device 800 is a network device, and the transceiver 805 is used to execute step 401 in Figure 4 and step 501 in Figure 5.

[0202] In one implementation, processor 801 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0203] In one implementation, the transmission configuration indication TCI state indication device 800 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiment. The processor and transceiver described in the present disclosure can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0204] The transmission configuration indication TCI status indicating device described in the above embodiments may be a network device or a terminal device, but the scope of the transmission configuration indication TCI status indicating device described in this disclosure is not limited thereto, and the structure of the transmission configuration indication TCI status indicating device may not be limited to Figures 6 and 7. The transmission configuration indication TCI status indicating device may be an independent device or may be part of a larger device. For example, the transmission configuration indication TCI status indicating device may be:

[0205] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0206] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0207] (3) ASIC, such as modem;

[0208] (4) Modules that can be embedded in other devices;

[0209] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0210] (6)Others, etc.

[0211] In the case where the transmission configuration indication TCI status indication device can be a chip or a chip system, please refer to the structural diagram of the chip shown in Figure 9. The chip shown in Figure 9 includes a processor 901 and an interface 902. The number of processors 901 can be one or more, and the number of interfaces 902 can be multiple.

[0212] For the case where the chip is used to implement the functions of the network device in the embodiments of the present disclosure:

[0213] Interface 902, used for transmitting code instructions to the processor;

[0214] The processor 901 is configured to execute code instructions to perform the method shown in FIG. 1 to FIG. 2 .

[0215] For the case where the chip is used to implement the functions of the terminal device in the embodiments of the present disclosure:

[0216] Interface 902, used for transmitting code instructions to the processor;

[0217] The processor 901 is configured to execute code instructions to perform the methods shown in FIG. 4 to FIG. 5 .

[0218] Optionally, the chip further includes a memory 903, which is used to store necessary computer programs and data.

[0219] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement functionality for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present disclosure.

[0220] An embodiment of the present disclosure also provides a communication system, which includes the transmission configuration indication TCI status indication device as a terminal device in the embodiments of Figures 6-7 and the transmission configuration indication TCI status indication device as a network device, or the system includes the transmission configuration indication TCI status indication device as a terminal device in the embodiment of Figure 8 and the transmission configuration indication TCI status indication device as a network device.

[0221] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0222] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0223] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks (SSDs)).

[0224] Those skilled in the art will understand that the various numerical numbers such as first and second involved in the present disclosure are only for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0225] The at least one in the present disclosure can also be described as one or more, and the multiple can be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0226] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0227] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0228] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0229] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0230] It should be understood that the various forms of processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the embodiments of the present disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and this document is not limited here.

[0231] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A transmission configuration indication (TCI) status indication method, characterized in that: The method is executed by a terminal device, and includes: Receive downlink channel control information DCI sent by a network device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

2. The method according to claim 1, characterized in that The method further comprises: Receive a media access control layer control element MAC CE sent by the network device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

3. The method according to claim 2, characterized in that The first information field includes multiple code points, each code point corresponds to a TCI state group indicated by the MAC CE.

4. The method according to claim 3, characterized in that The number of code points included in the first information field is the same as the maximum number of TCI state groups activated indicated by the MAC CE.

5. The method according to claim 1, wherein The second information field includes at least one first indication information, where the first indication information is used to indicate whether the TCI state corresponding to the first indication information is enabled.

6. The method according to claim 5, characterized in that The number of first indication information included in the second information field is the same as the maximum number of TCI states included in the TCI state group.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: Receive first signaling sent by the network device, where the first signaling is used to indicate whether the DCI includes the second information field.

8. The method according to any one of claims 1 to 6, characterized in that The first information field and / or the second information field occupies the reserved information field of the DCI; or, The first information field and / or the second information field occupies a newly added information field of the DCI.

9. A transmission configuration indication (TCI) status indication method, characterized in that: The method is performed by a network device, and includes: Send downlink channel control information DCI to the terminal device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

10. The method according to claim 9, characterized in that The method further comprises: A media access control layer control element MAC CE is sent to the terminal device, where the MAC CE is used to indicate at least one TCI state group activated by the terminal device and at least one TCI state included in each TCI state group.

11. The method according to claim 10, characterized in that The first information field includes multiple code points, each code point corresponds to a TCI state group indicated by the MAC CE.

12. The method according to claim 11, characterized in that The number of code points included in the first information field is the same as the maximum number of TCI state groups activated indicated by the MAC CE.

13. The method according to claim 9, characterized in that The second information field includes at least one first indication information, where the first indication information is used to indicate whether the TCI state corresponding to the first indication information is enabled.

14. The method according to claim 13, characterized in that The number of first indication information included in the second information field is the same as the maximum number of TCI states included in the TCI state group.

15. The method according to any one of claims 9 to 14, characterized in that: The method further comprises: Sending a first signaling to the terminal device, where the first signaling is used to indicate whether the DCI includes the second information field.

16. The method according to any one of claims 9 to 14, characterized in that: The first information field and / or the second information field occupies the reserved information field of the DCI; or, The first information field and / or the second information field occupies a newly added information field of the DCI.

17. A transmission configuration indication (TCI) status indication device, characterized in that: The device comprises: A transceiver unit is used to receive downlink channel control information DCI sent by a network device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

18. A transmission configuration indication (TCI) status indication device, characterized in that: The device comprises: A transceiver unit, used to send downlink channel control information DCI to a terminal device; the DCI includes a first information field and / or a second information field, the first information field is used to map the transmission configuration indication TCI state group activated by the terminal device, and the second information field is used to indicate whether to enable at least one TCI state included in the TCI state group corresponding to the first information field.

19. A communication device, characterized in that: The device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory to enable the device to perform the method according to any one of claims 1 to 8, or the method according to any one of claims 9 to 16.

20. A communication device, characterized in that: include: processor and interface circuits; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to execute the method according to any one of claims 1 to 8, or to execute the method according to any one of claims 9 to 16.

21. A computer-readable storage medium storing instructions, which, when executed, enable the method according to any one of claims 1 to 8 to be implemented, or enable the method according to any one of claims 9 to 16 to be implemented.

22. A communication system, characterized in that: The communication system comprises: A terminal device, configured to execute the method according to any one of claims 1 to 8; A network device, configured to execute the method according to any one of claims 9 to 16.

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