WO2024087221A1

WO2024087221A1 - Indication method and apparatus based on transmission configuration indication (tci) state

Info

Publication number: WO2024087221A1
Application number: PCT/CN2022/128418
Authority: WO
Inventors: 段高明; 池连刚
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2024-05-02

Abstract

Disclosed in the embodiments of the present application are an indication method and apparatus based on a transmission configuration indication (TCI) state. The method comprises: receiving downlink channel control information (DCI), which is sent by a network device, wherein the DCI comprises a first information domain and/or a second information domain, the first information domain is used for mapping a TCI state group, which is activated by a terminal device, and the second information domain is used for indicating whether to enable at least one TCI state included in the TCI state group corresponding to the first information domain. Therefore, the DCI can support the mapping of more TCI states, and can also support more rapid switching of TRPs and TCI state indications, such that the terminal device can ensure the reliability of a connection and a service during frequent switching, thereby effectively improving the communication efficiency of a system.

Description

Transmission Configuration Indication TCI status indication method and device

Technical Field

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

Background technique

Multiple Input Multiple Output (MIMO) technology has opened a new era of space resource development and utilization in mobile communication systems. Distributed MIMO is developed on the basis of traditional MIMO technology, expanding the application scope of traditional MIMO. For terminals, distributed MIMO technology means that there will be multiple transmission and reception points (Transmission and Reception Point or Transmit/Receive Point, TRP) to provide services for the terminal at the same time, and there is no cell switching.

In the related technology, 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) state. However, in the future, with the increasing maturity of distributed MIMO technology, the number of TRPs for joint transmission will increase, and with the increase of communication frequency, the density of networking will also increase, and the TRP or its corresponding beam serving the terminal may be frequently switched. How to support such frequent switching is a problem that needs to be solved.

Summary of the invention

The first aspect of the present application provides a transmission configuration indication (TCI) state indication method, which is performed 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.

The second aspect of the present application provides a transmission configuration indication (TCI) status indication method, which 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.

The third aspect of the present application provides a transmission configuration indication TCI state indication device, the device comprising:

A transceiver unit, 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.

The fourth aspect of the present application provides a transmission configuration indication TCI state indication device, the device comprising:

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.

The fifth aspect embodiment of the present application proposes a communication device, which includes a processor and a memory, wherein the memory stores a computer program, 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.

The sixth aspect embodiment of the present application proposes a communication device, which includes a processor and a memory, wherein the memory stores a computer program, 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.

The seventh aspect embodiment of the present application proposes a communication device, which includes 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 enable the device to execute the transmission configuration indication TCI status indication method described in the first aspect embodiment above.

The eighth aspect embodiment of the present application proposes a communication device, which includes 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 enable the device to execute the transmission configuration indication TCI status indication method described in the second aspect embodiment above.

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.

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.

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

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.

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.

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 the practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

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.

FIG1 is a flow chart of a transmission configuration indication TCI state indication method provided in an embodiment of the present application;

FIG2 is a flow chart of a transmission configuration indication TCI state indication method provided in an embodiment of the present application;

FIG3a is a schematic diagram of a TCI state group activated by a MAC CE indication provided in an embodiment of the present application;

FIG3b is a schematic diagram of a DCI information field provided in an embodiment of the present application;

FIG4 is a flow chart of a transmission configuration indication TCI state indication method provided in an embodiment of the present application;

5 is a schematic diagram of a flow chart of a transmission configuration indication TCI state indication method provided in an embodiment of the present application;

6 is a schematic diagram of the structure of a transmission configuration indication TCI state indication device provided in an embodiment of the present application;

7 is a schematic diagram of the structure of a transmission configuration indication TCI state indication device provided in an embodiment of the present application;

8 is a schematic diagram of the structure of another transmission configuration indication TCI state indication device provided in an embodiment of the present application;

FIG. 9 is a schematic diagram of the structure of a chip provided in an embodiment of the present application.

Detailed ways

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

Transmission and Reception Point (TRP) or (Transmit/receive Point, TRP), corresponds to the service cell or neighboring cell of the terminal device. A cell contains one or more TRPs. A TRP contains one or more panels, and each panel contains one or more co-located antennas.

MIMO: Multiple Input Multiple Output, multiple input multiple output;

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

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

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

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

DL: downlink, downlink;

UL: uplink, uplink;

TCI: Transmission Configuration Indication, transmission configuration indication;

DCI: Downlink Control Information, downlink control information;

RRC: Radio Resource Control, radio resource control;

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

DMRS: Demodulation Reference Signal, demodulation reference signal;

MAC CE：Medium Access ControlControl Element, media access control layer control element (or control unit);

CJT: Coherent Joint Transmission, coherent joint transmission;

BWP：Bandwidth Part, bandwidth part;

CC：Component Carrier, component carrier;

CQI: Channel Quality Indication, channel quality indication;

PMI: PrecodingMatrixIndicator, precoding matrix indicator.

Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present application. Instead, they are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. 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.

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, these information should not be limited to these terms. These terms are only used to distinguish the same type of information 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..." or "when..." or "in response to determination".

The embodiments of the present application are described in detail below, and 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 construed as limiting the present application.

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

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 embodiment of the present application does 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 the network device, such as the base station, and the functions of some protocol layers are placed in the CU for centralized control, and 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.

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 may also be referred to as a terminal device (terminal), a user equipment (UE), a mobile station (MS), a mobile terminal device (MT), etc. The terminal device may 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 (Virtual Reality, VR) terminal device, an augmented reality (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 embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

In the above communication system, distributed MIMO technology can be used, and multiple TRPs (Multi-TRPs) can be used to provide services for the terminal at the same time. For the terminal, there is no cell switching. Without the concept of cell boundaries, the user experience will be smoother. In addition, multiple TRPs serve one terminal device, and the signal quality is better guaranteed, which can meet the high-speed and high-capacity service requirements of the terminal device.

Because different TRPs are located at 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 respectively. The downlink beam information is indicated by the TCI state (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 of which includes up to two TCI states.

However, as distributed MIMO technology matures in the future, 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 or its corresponding beam serving the terminal may switch frequently. How to support such frequent switching is a problem that needs to be solved.

The transmission configuration indication TCI status indication method and device provided in this application are described in detail below in conjunction with the accompanying drawings.

Please refer to Figure 1, which is a flow chart of a transmission configuration indication TCI status indication method provided in an embodiment of the present application. It should be noted that the transmission configuration indication TCI status indication method in the embodiment of the present application is executed by a terminal device. As shown in Figure 1, the method may include the following steps:

Step 101, receive DCI sent by a network device, the DCI including 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.

In an embodiment of the present application, a 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 a 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.

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.

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

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, which is used for downlink transmission of the terminal device.

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

In some embodiments, a terminal device is capable of receiving a media 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.

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

In some embodiments, the first information field includes multiple code points, each code point corresponding to a TCI status group indicated by the MAC CE.

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, which are 000, 001, 010, 011, 100, 101, 110, and 111. Each code point may correspond to a TCI state group indicated by the MAC CE.

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.

In some embodiments, 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.

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.

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.

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

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.

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

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 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.

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

Step 201, 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.

In an embodiment of the present application, a 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.

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 TCI state group activated among the configured multiple TCI states, and at least one TCI state included in each TCI state group.

As an example, the MAC CE indicates at least one activated TCI state group, and at least one TCI state included in each TCI state group can be as shown in Figure 3a. In Figure 3a, C ₀ is a TCI state group activated by the terminal device, and the TCI state group includes M TCI states, namely TCI state ID _0,1 , TCI state ID _0,2 ...TCI state ID _0,M . Similarly, _CN is a TCI state group activated by the terminal device, and the TCI state group includes L TCI states, namely TCI state ID _0N,1 , TCI state ID _N,2 ...TCI state ID _N,L . Among them, M, L, N are all positive integers, and the values of M and L can be the same or different.

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

Step 202, receive 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.

In an embodiment of the present application, a terminal device is capable of receiving downlink control information DCI sent by a network device, the DCI including 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.

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.

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

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.

That is, for example, if the first information field has K bits, the first information field includes 2 ^K code points, and the MAC CE can indicate a maximum of 2 ^K activated TCI state groups. Each code point can be mapped to an activated TCI state group indicated by the MAC CE.

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.

That is, for example, 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.

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.

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

As an example, the first information field and the second information field of the DCI may be as shown in FIG3b, the first information field having K bits, and the second information field having M bits. The terminal device is capable of receiving a first signaling sent by a network device, and the first signaling is capable of indicating whether the DCI includes the second information field. If the first information field has K bits, the first information field includes 2 ^K code points, and the MAC CE is capable of indicating a maximum of 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 a maximum of 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.

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

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.

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.

Please refer to Figure 4, which is a flow chart of a transmission configuration indication TCI status indication method provided in an embodiment of the present application. It should be noted that the transmission configuration indication TCI status indication method in the embodiment of the present application is executed by a network device. As shown in Figure 4, the method may include the following steps:

Step 401, sending DCI to the terminal device, the DCI including 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.

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.

In some implementations, the network device is able to send a first signaling to the terminal device, where the first signaling is used to indicate to the terminal device whether the DCI includes the second information field.

In some embodiments, the network device is capable of sending a media access control layer control element 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.

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 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.

Please refer to Figure 5, which is a flow chart of a transmission configuration indication TCI status indication method provided in an embodiment of the present application. It should be noted that the transmission configuration indication TCI status indication method in the embodiment of the present application is executed by a network device. As shown in Figure 5, the method may include the following steps:

Step 501, sending 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.

In an embodiment of the present application, the network device is capable of sending 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.

Step 502, sending DCI to the terminal device, the DCI including 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.

In an embodiment of the present application, a network device is capable of sending a DCI to a terminal device, wherein the DCI includes a first information field and/or a second information field, wherein the first information field is used to map a 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.

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

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 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.

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.

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.

As shown in FIG6 , the transmission configuration indication TCI state indication device 600 includes: a transceiver unit 610. Among them,

The transceiver unit 610 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 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.

Optionally, the transceiver unit 610 is also 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.

Optionally, the first information field includes multiple code points, each code point corresponding to a TCI status group indicated by the MAC CE.

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.

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.

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.

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.

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.

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 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.

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.

As shown in FIG. 7 , the transmission configuration indication TCI state indication device 700 includes: a transceiver unit 710. Among them,

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.

Optionally, the transceiver unit 710 is also 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.

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.

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.

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.

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

In order to implement the above-mentioned 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.

In order to implement the above-mentioned 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.

Please refer to Figure 8, which is a schematic diagram of the structure of another transmission configuration indication TCI status indication device provided in an embodiment of the present disclosure. The transmission configuration indication TCI status indication device 800 can be a network device, or a terminal device, or a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. The device can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.

The transmission configuration indication TCI status indication device 800 may include one or more processors 801. The processor 801 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the transmission configuration indication TCI status indication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

Optionally, the transmission configuration indication TCI status indication device 800 may also include one or more memories 802, on which a computer program 803 may be stored, and the processor 801 executes the computer program 803, so that the transmission configuration indication TCI status indication device 800 performs the method described in the above method embodiment. The computer program 703 may be solidified in the processor 801, in which case the processor 801 may be implemented by hardware.

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

Optionally, the transmission configuration indication TCI state 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., for implementing a transceiver function. The transceiver 705 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, the transmission configuration indication TCI status indication device 800 may further include one or more interface circuits 807. The interface circuit 807 is used 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.

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.

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; step 501 in Figure 5.

In one implementation, the processor 801 may include a transceiver for implementing the receiving and sending 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 sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

In one implementation, the transmission configuration indication TCI state indication device 800 may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the aforementioned method embodiment. The processor and transceiver described in the present disclosure may be implemented in 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 may 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.

The transmission configuration indication TCI status indication 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 indication device described in the present disclosure is not limited thereto, and the structure of the transmission configuration indication TCI status indication device may not be limited by FIG. 6-FIG. 7. The transmission configuration indication TCI status indication device may be an independent device or may be part of a larger device. For example, the transmission configuration indication TCI status indication device may be:

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

(2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and computer programs;

(3) ASIC, such as modem;

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

(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.;

(6)Others

For the case where the transmission configuration indication TCI state indication device can be a chip or a chip system, please refer to the structural schematic 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.

For the case where the chip is used to implement the functions of the network device in the embodiment of the present disclosure:

Interface 902, used for code instructions and transmission to the processor;

The processor 901 is configured to execute code instructions to perform the method shown in FIGS. 1 to 2 .

For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present disclosure:

Interface 902, used for code instructions and transmission to the processor;

The processor 901 is configured to execute code instructions to execute the method shown in FIGS. 4 to 5 .

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

Those skilled in the art may also understand 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 the two. Whether such functions are 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 the functions for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

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 and 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.

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.

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.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the process or function according to the embodiment of the present disclosure is generated in whole or in part. 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 a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. 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 contains one or more available media integrated. Available media can be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD)), etc.

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

At least one in the present disclosure may also be described as one or more, and a plurality may 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", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

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

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

Those of ordinary skill 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. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

Those skilled in the art can 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.

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 recorded in the embodiments of the present disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in the present invention can be achieved, and this document does not limit this.

The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

A transmission configuration indication (TCI) status indication method, characterized in that the method is executed by a terminal device, and the method comprises:

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.
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.
The method according to claim 2 is characterized in that the first information field includes multiple code points, each code point corresponds to a TCI status group indicated by the MAC CE.
The method according to claim 3 is 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 by the MAC CE indication.
The method according to claim 1 is characterized in that 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.
The method according to claim 5 is 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.
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.
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 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.
A transmission configuration indication (TCI) status indication method, characterized in that the method is performed by a network device, and the method comprises:

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.
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.
The method according to claim 10 is characterized in that the first information field includes multiple code points, each code point corresponds to a TCI status group indicated by the MAC CE.
The method according to claim 11 is 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 by the MAC CE indication.
The method according to claim 9 is characterized in that 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.
The method according to claim 13 is 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.
The method according to any one of claims 9 to 14, characterized in that the method further comprises:

A first signaling is sent to the terminal device, where the first signaling is used to indicate whether the DCI includes the second information field.
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 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.
A transmission configuration indication (TCI) status indication device, characterized in that the device comprises:

A transceiver unit, 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.
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.
A communication device, characterized in that the device comprises a processor and a memory, the memory stores a computer program, and the processor executes the computer program stored in the memory so that the device performs the method as described in any one of claims 1 to 8, or performs the method as described in any one of claims 9 to 16.
A communication device, characterized in that it comprises: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to execute the code instructions to 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.
A computer-readable storage medium is used to store instructions, and when the instructions are executed, the method according to any one of claims 1 to 8 is implemented, or the method according to any one of claims 9 to 16 is implemented.
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.