Communication method and device

Abstract

The invention relates to a communication method and communication equipment. The method comprises the following steps: a first communication device receives a transmission configuration indication (TCI) state activation command, wherein the TCI state activation command is used for indicating one or more sets of TCI states; in the embodiment of the invention, the TCI state can be flexibly activated through the TCI state activation command.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly, to a communication method and device. Background Art

[0002] In the Media Access Control (MAC) specification, a MAC control element (MAC CE) can be used to activate a transmission configuration indicator (TCI) state. Generally, the unified TCI state activated by the MAC CE belongs to a single transmission and reception point (TRP) in a serving cell. Summary of the Invention

[0003] Embodiments of this application provide a communication method and device, which can flexibly activate the TCI state.

[0004] An embodiment of this application provides a communication method, including: a first communication device receives a TCI state activation command, and the TCI state activation command is used to indicate one or more sets of TCI states.

[0005] An embodiment of this application provides a communication method, including: a second communication device sends a TCI state activation command, and the TCI state activation command is used to indicate multiple sets of TCI states.

[0006] An embodiment of this application provides a first communication device, including: a receiving unit, configured to receive a TCI state activation command, and the TCI state activation command is used to indicate one or more sets of TCI states.

[0007] An embodiment of this application provides a second communication device, including: a sending unit, configured to send a TCI state activation command, and the TCI state activation command is used to indicate multiple sets of TCI states.

[0008] An embodiment of this application provides a first communication device, including a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory, so that the first communication device executes the above-mentioned communication method.

[0009] An embodiment of this application provides a second communication device, including a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory, so that the second communication device executes the above-mentioned communication method.

[0010] An embodiment of the present application provides a chip for implementing the above communication method. Specifically, the chip includes a processor configured to call and run a computer program from a memory, such that a device installed with the chip executes the above communication method.

[0011] An embodiment of the present application provides a computer-readable storage medium for storing a computer program, which, when run on a device, causes the device to execute the above communication method.

[0012] An embodiment of the present application provides a computer program product including computer program instructions that cause a computer to execute the above communication method.

[0013] An embodiment of the present application provides a computer program that, when run on a computer, causes the computer to execute the above communication method.

[0014] In the embodiment of the present application, the TCI state can be flexibly activated through the TCI state activation command. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

[0016] Figure 2 is a schematic diagram of a unified TCI state.

[0017] Figure 3 is a schematic flowchart of a communication method according to an embodiment of the present application.

[0018] Figure 4 is a schematic flowchart of a communication method according to another embodiment of the present application.

[0019] Figure 5 is a schematic block diagram of MAC CE format 1 according to an embodiment of the present application.

[0020] Figure 6 is a schematic block diagram of MAC CE format 2 according to an embodiment of the present application.

[0021] Figure 7 is a schematic block diagram of MAC CE format 3 according to an embodiment of the present application.

[0022] Figure 8 is a schematic block diagram of MAC CE format 4 according to an embodiment of the present application.

[0023] Figure 9 is a schematic block diagram of a first communication device according to an embodiment of the present application.

[0024] Figure 10 is a schematic block diagram of a second communication device according to an embodiment of the present application.

[0025] Figure 11 It is a schematic block diagram of a communication device according to an embodiment of the present application.

[0026] Figure 12 It is a schematic block diagram of a chip according to an embodiment of the present application.

[0027] Figure 13 It is a schematic block diagram of a communication system according to an embodiment of the present application. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0029] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, an evolved system of the NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) system or other communication systems, etc.

[0030] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technologies, mobile communication systems will not only support traditional communication but also support, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication. Embodiments of this application can also be applied to these communication systems.

[0031] In one implementation, the communication system in the embodiments of this application can be applied to a Carrier Aggregation (CA) scenario, a Dual Connectivity (DC) scenario, or a Standalone (SA) networking scenario.

[0032] In one implementation, the communication system in the embodiments of this application can be applied to unlicensed spectrum, where unlicensed spectrum can also be considered shared spectrum; or the communication system in the embodiments of this application can also be applied to licensed spectrum, where licensed spectrum can also be considered non-shared spectrum.

[0033] Embodiments of this application describe various embodiments in combination with network devices and terminal devices. Among them, terminal devices can also be referred to as User Equipment (UE), access terminals, user units, user stations, mobile stations, mobile handsets, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication devices, user agents, or user devices, etc.

[0034] Terminal devices can be stations (STAION, ST) in a WLAN, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA) devices, handheld devices with wireless communication capabilities, computing devices, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in next-generation communication systems such as NR networks, or terminal devices in future evolved Public Land Mobile Network (PLMN) networks, etc.

[0035] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as a ship, etc.); it can also be deployed in the air (such as an airplane, a balloon, a satellite, etc.).

[0036] In the embodiments of the present application, the terminal device can be a mobile phone, 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, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city or a wireless terminal device in smart home, etc.

[0037] By way of example and not limitation, in the embodiments of the present application, the terminal device can also be a wearable device. A wearable device can also be called a wearable intelligent device, which is a general term for devices developed by applying wearable technology to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, shoes, etc. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. A wearable device is not just a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can realize complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smart phones, such as various smart bracelets and smart jewelry for monitoring physical signs.

[0038] In the embodiments of the present application, a network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in a WLAN, a base transceiver station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0039] By way of example and not limitation, in the embodiments of the present application, the network device may have mobility characteristics. For example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, etc.

[0040] In the embodiments of the present application, the network device may provide services for a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or in other words, spectrum resources) used by the cell. The cell may be a cell corresponding to the network device (e.g., a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. Here, the small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc. These small cells have the characteristics of a small coverage range and a low transmission power, and are suitable for providing high-rate data transmission services.

[0041] Figure 1 Exemplarily, a communication system 100 is shown. The communication system includes a network device 110 and two terminal devices 120. In one implementation, the communication system 100 may include multiple network devices 110, and the coverage range of each network device 110 may include other numbers of terminal devices 120. The embodiments of the present application do not limit this.

[0042] In one implementation, the communication system 100 may further include other network entities such as a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF), etc., which are not limited in the embodiments of this application.

[0043] Among them, the network device may further include an access network device and a core network device. That is, the wireless communication system further includes a plurality of core networks for communicating with the access network device. The access network device may be an evolved Node B (which may be abbreviated as eNB or e-NodeB), a macro base station, a micro base station (also known as a "small base station"), a pico base station, an access point (AP), a transmission point (TP), or a new generation Node B (gNodeB) in a Long-Term Evolution (LTE) system, a Next Radio (NR) system, or an Authorized Auxiliary Access Long-Term Evolution (LAA-LTE) system.

[0044] It should be understood that in the embodiments of this application, a device with communication functions in the network / system may be referred to as a communication device. Taking Figure 1 the illustrated communication system as an example, the communication device may include a network device and a terminal device with communication functions. The network device and the terminal device may be specific devices in the embodiments of this application, which will not be elaborated here; the communication device may also include other devices in the communication system, such as other network entities like a network controller and a mobility management entity, which are not limited in the embodiments of this application.

[0045] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article merely describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0046] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or a representation of an associated relationship. For example, A indicates B, which can mean that A directly indicates B. For example, B can be obtained through A; it can also mean that A indirectly indicates B. For example, A indicates C and B can be obtained through C; it can also mean that there is an associated relationship between A and B.

[0047] In the description of the embodiments of the present application, the term "corresponding" can indicate a direct or indirect corresponding relationship between two parties, or can indicate an associated relationship between the two parties, or can also be relationships such as indication and being indicated, configuration and being configured.

[0048] To facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0049] In the MAC specification, the activation / deactivation of the TCI state in the MAC CE is used to activate up to 8 Joint TCI states or UL / DL TCI states, which respectively correspond to 8 code points in the physical layer signaling downlink control information (DCI). As Figure 2 shown, it is a schematic diagram of the format of a MAC CE.

[0050] For example, the Unified TCI States Activation / Deactivation MAC CE is identified by a MAC subheader with an extended Logical Channel Identification (eLCID). This MAC CE can include the following variable fields: (The Unified TCI States Activation / Deactivation MAC CE is identified by a MAC subheader with eLCID. It has a variable size consisting of following fields:)

[0051] Serving Cell ID: This field indicates the identity of the Serving Cell for which the MAC CE applies. The length of the field is 5 bits. If the indicated Serving Cell is configured as part of a simultaneousU-TCI-UpdateList1, -simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4 as specified in TS 38.331[5], this MAC CE applies to all the Serving Cells in the set simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4, respectively;

[0052] DL - Bandwidth Part (BWP) Identification: This field indicates a DL BWP for which the MAC CE applies as the codepoint of the DCI bandwidth part indicator field as specified in TS 38.212[9]. The length of the BWP ID field is 2 bits;

[0053] UL BWP Identification: This field indicates a UL BWP for which the MAC CE applies as the codepoint of the DCI bandwidth part indicator field as specified in TS 38.212[9]. The length of the BWP ID field is 2 bits;

[0054] P i : This field indicates whether each TCI codepoint has multiple TCI states or single TCI state. If P i field is set to 1, it indicates that the i-th TCI codepoint includes DL TCI state and UL TCI state. If P i field is set to 0, it indicates that the i-th TCI codepoint includes only DL / Combined TCI state or UL TCI state. The codepoint to which the TCI state is mapped is determined by its sequential position in all TCI state ID fields. (P i : This field indicates whether each TCI codepoint has multiple TCI states or single TCI state. If P iIf the Pi field is set to 1, it indicates that the ith TCI codepoint includes the DL TCI state and the ULTCI state. If the Pi field is set to 0, it indicates that the ith TCI codepoint includes only the DL / joint TCI state or the UL TCI state. The codepoint to which a TCI state is mapped is determined by its ordinal position among all the TCI state ID fields;)

[0055] D / U: This field indicates whether the TCI state ID in the same octet is for joint / downlink or uplink TCI state. If this field is set to 1, the TCI state ID in the same octet is for joint / downlink. If this field is set to 0, the TCI state ID in the same octet is for uplink;)

[0056] TCI state ID: This field indicates the TCI state identified by TCI-StateId as specified in TS38.331[5]. If D / U is set to 1, 7-bits length TCI state ID i.e. TCI-StateId as specified in TS 38.331[5] is used. If D / U is set to 0, the most significant bit of TCI state ID is considered as the reserved bit and remainder 6 bits indicate the UL-TCIState-Id as specified in TS 38.331[5]. The maximum number of activated TCI states is 16;

[0057] R: Reserved bit, set to 0.

[0058] The unified TCI state activated by MAC CE usually belongs to a single TRP in a serving cell. In the Multiple-Input-Multiple-Output (MIMO) project of R18, a unified TCI state that activates two TRPs belonging to a serving cell is proposed, where one TRP is the serving TRP and the other TRP is the TRP associated with the additional PCI (referred to as the incremental TRP).

[0059] A new MAC CE can be introduced to activate the unified TCI state of two TRPs belonging to a serving cell.

[0060] For example, for MAC CE enhancement, it is supported that each TCI codepoint corresponds to one or both TRP(s).

[0061] For example, for MAC CE enhancement, it is supported that each corresponding TRP maps to:

[0062] - one joint TCI state, or

[0063] - a DL TCI state, an UL TCI state, or a pair of DL and UL TCI states.

[0064] (For the MAC CE enhancement, it is supported that each corresponding TRP maps to:

[0065] - one joint TCI state, or

[0066] - a DL TCI state, an UL TCI state, or a pair of DL and UL TCI states)

[0067] For example, for sDCI based mTRP operation using unified TCI state framework, introduce the new MAC CE containing TCI state information of mTRPs.

[0068] If the signaling type of the unified TCI state configuration is configured by RRC (i.e. either joint DL / UL TCI state or separate DL / UL TCI state), it applies to both TRPs.

[0069] Introduce the new field indicating if the unified TCI state of the second TRP is present or not.

[0070] On unified TCI framework extension for S-DCI based MTRP operation, support the followings:

[0071] For a serving cell configured with joint DL / UL TCI mode, a full-set or any sub-set of {first joint TCI state, second joint TCI state} can be mapped to a TCI codepoint of the existing TCI field in a DCI format 1_1 / 1_2 by TCI state activation command (MAC-CE)

[0072] For a serving cell configured with separate DL / UL TCI mode, a full-set or any sub-set of {first DL TCI state, first UL TCI state, second DL TCI state, second UL TCI state} can be mapped to a TCI codepoint of the existing TCI field in a DCI format 1_1 / 1_2 by TCI state activation command (MAC-CE)

[0073] TCI state activation command (MAC-CE) should indicate that each joint / DL / UL TCI state mapped to a TCI codepoint is the first or second joint / DL / UL TCI state

[0074] The first / second indicated joint / DL / UL TCI state(s) is updated according to the corresponding first / second joint / DL / UL TCI state(s) mapped to the TCI codepoint received by the UE

[0075] If the UE receives a TCI codepoint mapped with a sub-set of {first joint TCI state, second joint TCI state} or {first DL TCI state, first UL TCI state, second DL TCI state, second UL TCI state}, the UE shall update the first / second indicated joint / DL / UL TCI state(s) according to the first / second joint / DL / UL TCI state(s) in the subset and keep other indicated first / second joint / DL / UL TCI state(s) that is not updated by the received TCI codepoint.

[0076] Figure 3 is a schematic flowchart of a communication method 300 according to an embodiment of the present application. Optionally, the method may be applied to Figure 1 the system shown, but is not limited thereto. The method includes at least some of the following.

[0077] S310. The first communication device receives a transmission configuration indication (TCI) state activation command, and the TCI state activation command is used to indicate one or more sets of TCI states.

[0078] In an embodiment of the present application, a first communication device, such as a terminal device, may receive a TCI state activation command from a second communication device, such as a network device. The TCI state activation command is used to activate multiple, for example, up to 8 TCI states, which respectively correspond to 8 code points in the physical layer signaling downlink control information (DCI). The TCI state activation command may be carried in a MAC CE.

[0079] In one embodiment, there is a correspondence between a transmission reception point (TRP) and a TCI state. The multiple sets of TCI states include unified TCI states of multiple TRPs. For example, through the TCI state activation command, the unified TCI state of two TRPs belonging to a serving cell may be activated. One of the TRPs is a serving TRP, and the other TRP is a TRP associated with an additional physical cell identifier (PCI) (which may also be referred to as an incremental TRP). The serving TRP corresponds to one set of TCI states, and the incremental TRP corresponds to another set of TCI states.

[0080] In one embodiment, the multiple sets of TCI states include a first set of TCI states and a second set of TCI states. For example, the TCI state activation command is used to indicate two sets of TCI states, and each set of TCI states may include one or more TCI states. For example, one set of TCI states includes one or more of downlink and uplink TCI states, downlink TCI states, uplink TCI states, downlink or uplink TCI states, combined TCI states, no TCI states, etc.

[0081] In one embodiment, the TCI state activation command is carried in a MAC CE sent by the second communication device. The first communication device is a terminal device, and the second communication device is a network device.

[0082] In one embodiment, the TCI state activation command includes a first parameter, and the first parameter corresponds to the first set of TCI states.

[0083] In one embodiment, the first parameter includes 2 bits or more.

[0084] In one embodiment, the first set of TCI states includes at least one of:

[0085] First downlink and uplink TCI state;

[0086] First downlink TCI state;

[0087] First uplink TCI state;

[0088] No TCI state.

[0089] In the embodiments of the present application, the first set of TCI states may include a combination of multiple TCI states. The order of these TCI states may not be limited. For example, the order of the first set of TCI states may be {first downlink and uplink TCI state, first downlink TCI state, first uplink TCI state, no TCI state}, or may be {first downlink TCI state, first uplink TCI state, first downlink and uplink TCI state, no TCI state}. Of course, these TCI states may also be in other orders, which are not exhaustively listed. The order in the following first set of TCI states and / or second set of TCI states is similar.

[0090] In the embodiments of the present application, the first parameter may include multiple bits, and the multiple bits may form multiple values, and one value may correspond to one TCI state in the first set of TCI states. For example, the first parameter F in the MAC CE i includes 2 bits, and the values of the 2 bits may be {11, 10, 01, 00}. Among them, 11 may correspond to the first downlink and uplink TCI state; 10 may correspond to the first downlink TCI state; 01 may correspond to the first uplink TCI state; 00 may correspond to no TCI state. Again, for example, F i includes 3 bits, and the values of the 3 bits may be {111, 110, 101, 100, 011, 010, 001, 000}. Among them, 110 may correspond to the first downlink and uplink TCI state; 101 may correspond to the first downlink TCI state; 011 may correspond to the first uplink TCI state; 000 may correspond to no TCI state. Other values of F i may not be used. The values of the above first parameter and their corresponding TCI states are only examples and not limitations, and can be flexibly set according to actual needs. For example, 11 may also correspond to the first downlink TCI state, and 01 may also correspond to no TCI state, etc.

[0091] In one implementation, the first set of TCI states includes at least one of:

[0092] First downlink and uplink TCI state;

[0093] First downlink or uplink TCI state;

[0094] No TCI state.

[0095] For example, the first parameter F in the MAC CE i includes 2 bits, and the values of the 2 bits may be {11, 10, 01, 00}. Among them, 11 may correspond to the first downlink and uplink TCI state; 10 may correspond to the first downlink or uplink TCI state; 01 may correspond to no TCI state. 00 may not be used. Again, for example, Fi It includes 3 bits, and the values of the 3 bits can be {111, 110, 101, 100, 011, 010, 001, 000}. Among them, 110 can correspond to the first downlink and uplink TCI states; 101 can correspond to the first downlink or uplink TCI state; 011 can correspond to the no-TCI state. F i The other values may not be used. The values of the above first parameter and their corresponding TCI states are only examples and not limitations, and can be flexibly set according to actual needs. For example, 11 can also correspond to the first downlink or uplink TCI state, and 01 can also correspond to the no-TCI state, etc.

[0096] In one embodiment, the first set of TCI states includes at least one of:

[0097] The first combined TCI state;

[0098] The no-TCI state.

[0099] For example, the first parameter F in the MAC CE i includes 2 bits, and the values of the 2 bits can be {11, 10, 01, 00}. Among them, 11 can correspond to the first combined TCI state; 10 can correspond to the no-TCI state. 01 and 00 may not be used. The F in the MAC CE i includes 1 bit, and the values of the 2 bits can be {1, 0}. Among them, 1 can correspond to the first combined TCI state; 0 can correspond to the no-TCI state. Again, for example, F i includes 3 bits, and the values of the 3 bits can be {111, 110, 101, 100, 011, 010, 001, 000}. Among them, 110 can correspond to the first combined TCI state; 101 can correspond to the no-TCI state. F i The other values may not be used. The values of the above first parameter and their corresponding TCI states are only examples and not limitations, and can be flexibly set according to actual needs. For example, 11 can also correspond to the no-TCI state, and 01 can also correspond to the first combined TCI state.

[0100] In one embodiment, the TCI state activation command includes a second parameter, and the second parameter corresponds to a second set of TCI states.

[0101] In one embodiment, in the TCI state activation command, the first set of TCI states is before the second set of TCI states. For example, in the format of the MAC CE, the first parameter is before the second parameter.

[0102] In one embodiment, the second parameter includes 2 bits or more.

[0103] In one embodiment, the second set of TCI states includes at least one of:

[0104] Second downlink and uplink TCI states;

[0105] Second downlink TCI state;

[0106] Second uplink TCI state;

[0107] No TCI state.

[0108] In an embodiment of the present application, the second set of TCI states may include a combination of multiple TCI states. The order of these TCI states may not be limited.

[0109] In an embodiment of the present application, the second parameter may include multiple bits, and the multiple bits may form multiple values, and one value may correspond to one TCI state in the second set of TCI states. For example, the second parameter S in the MAC CE i includes 2 bits, and the values of the 2 bits may be {11, 10, 01, 00}. Among them, 11 may correspond to the second downlink and uplink TCI states; 10 may correspond to the second downlink TCI state; 01 may correspond to the second uplink TCI state; 00 may correspond to no TCI state. Again, S i includes 3 bits, and the values of the 3 bits may be {111, 110, 101, 100, 011, 010, 001, 000}. Among them, 110 may correspond to the second downlink and uplink TCI states; 101 may correspond to the second downlink TCI state; 011 may correspond to the second uplink TCI state; 000 may correspond to no TCI state. S i Other values of S may not be used. The values of the above second parameter and their corresponding TCI states are only examples and not limitations, and can be flexibly set according to actual needs. For example, 11 may also correspond to the second downlink TCI state, and 01 may also correspond to no TCI state, etc.

[0110] In one implementation, the second set of TCI states includes at least one of:

[0111] Second downlink and uplink TCI states;

[0112] Second downlink or uplink TCI state;

[0113] No TCI state.

[0114] For example, the second parameter S in the MAC CE i includes 2 bits, and the values of the 2 bits may be {11, 10, 01, 00}. Among them, 11 may correspond to the second downlink and uplink TCI states; 10 may correspond to the second downlink or uplink TCI state; 01 may correspond to no TCI state. 00 may not be used. Again, S iIt includes 3 bits, and the values of the 3 bits can be {111, 110, 101, 100, 011, 010, 001, 000}. Among them, 110 can correspond to the second downlink and uplink TCI states; 101 can correspond to the second downlink or uplink TCI state; 011 can correspond to the no-TCI state. S i The other values can be not used. The values of the above second parameter and their corresponding TCI states are only examples rather than limitations, and can be flexibly set according to actual requirements. For example, 11 can also correspond to the second downlink or uplink TCI state, and 01 can also correspond to the no-TCI state, etc.

[0115] In one implementation, the second set of TCI states includes at least one of:

[0116] The second combined TCI state;

[0117] The no-TCI state.

[0118] For example, the second parameter S in the MAC CE i includes 2 bits, and the values of the 2 bits can be {11, 10, 01, 00}. Among them, 11 can correspond to the first combined TCI state; 10 can correspond to the no-TCI state. 01 and 00 can be not used. The S in the MAC CE i includes 1 bit, and the value can be {1, 0}. Among them, 1 can correspond to the first combined TCI state; 0 can correspond to the no-TCI state. Again, S i includes 3 bits, and the values of the 3 bits can be {111, 110, 101, 100, 011, 010, 001, 000}. Among them, 110 can correspond to the first combined TCI state; 101 can correspond to the no-TCI state. i The other values can be not used. The values of the above first parameter and their corresponding TCI states are only examples rather than limitations, and can be flexibly set according to actual requirements. For example, 11 can also correspond to the no-TCI state, and 01 can also correspond to the first combined TCI state.

[0119] In one implementation, the sequence number of the TCI state jointly indicated by the first parameter and the second parameter corresponds to the code point indicating the TCI state in the physical layer signaling.

[0120] In the embodiments of the present application, multiple parameters can be used to jointly indicate multiple sets of TCI states. In one case, the TCI state activation command can include a first parameter and a second parameter. For example, in the MAC CE, through the first parameter F i and the second parameter S i jointly indicate the combination of the first set of TCI states and the second set of TCI states. Among them, i can represent F i and S iSequence number of the jointly indicated TCI state. F i and S i The i-th state indicated jointly corresponds to the i-th code point indicating the TCI state in the physical layer signaling. Specifically, for example, F 1 and S 1 The first state indicated corresponds to the first code point indicating the TCI state in the physical layer signaling. F 8 and S 8 The eighth state indicated corresponds to the eighth code point indicating the TCI state in the physical layer signaling.

[0121] In the embodiments of the present application, the joint indication may also be referred to as combined indication, common indication, etc. The joint indication may include various indication methods. Several examples are introduced below, and the specific values of the two parameters and their corresponding TCI states in the examples may be changed.

[0122] For example, the first parameter F 1 being 11 corresponds to the first downlink and uplink TCI states in the first set of TCI states, and the second parameter S 1 being 11 corresponds to the second downlink and uplink TCI states in the second set of TCI states. F 1 and S 1 Jointly indicate the first downlink and uplink TCI states, and the second downlink and uplink TCI states. The first parameter F 2 being 10 corresponds to the first downlink TCI state in the first set of TCI states, and the second parameter S 2 being 10 corresponds to the second downlink TCI state in the second set of TCI states. F 2 and S 2 Jointly indicate the first downlink TCI state, and the second downlink TCI state.

[0123] Again, for example, the first parameter F 2 being 10 corresponds to the first downlink or uplink TCI state in the first set of TCI states, and the second parameter S 2 being 10 corresponds to the second downlink or uplink TCI state in the second set of TCI states. F 2 and S 2 Jointly indicate the first downlink or uplink TCI state, and the second downlink or uplink TCI state. The first parameter F 4 being 11 corresponds to the first downlink and uplink TCI states in the first set of TCI states, and the second parameter S 4 being 10 corresponds to the second downlink or uplink TCI state in the second set of TCI states. F 4 and S 4 Jointly indicate the first downlink and uplink TCI states, and the second downlink or uplink TCI state.

[0124] Again, for example, the first parameter F1 The first parameter F corresponding to the first combined TCI state is 11, and the second parameter S 1 corresponding to the second combined TCI state in the second set of TCI states is 11. F 1 and S 1 jointly indicate the first combined TCI state and the second combined TCI state. The first parameter F 2 corresponding to the first combined TCI state is 11, and the second parameter S 2 corresponding to the no-TCI state in the second set of TCI states is 10. F 2 and S 2 jointly indicate the first combined TCI state and the no-TCI state. The first parameter F 3 corresponding to the no-TCI state is 10, and the second parameter S 3 corresponding to the second combined TCI state in the second set of TCI states is 11. F 3 and S 3 jointly indicate the no-TCI state and the second combined TCI state.

[0125] In one embodiment, the TCI state activation command includes a third parameter corresponding to a combination of the first set of TCI states and the second set of TCI states.

[0126] In one embodiment, the sequence number of the TCI state indicated by the third parameter corresponds to the code point indicating the TCI state in the physical layer signaling. In the embodiments of the present application, multiple sets of TCI states can be indicated by one parameter. For example, in the MAC CE, the third parameter T i indicates a combination of the first set of TCI states and the second set of TCI states. Wherein, i can represent the i sequence number of the TCI state indicated by T. T i The i-th state indicated by T corresponds to the i-th code point indicating the TCI state in the physical layer signaling. Specifically, for example, the 1 first state indicated by T corresponds to the first code point indicating the TCI state in the physical layer signaling. The 8 eighth state indicated by T corresponds to the eighth code point indicating the TCI state in the physical layer signaling.

[0127] In one embodiment, the combination of the first set of TCI states and the second set of TCI states includes at least one of the following:

[0128] The first downlink and uplink TCI state and the second downlink and uplink TCI state;

[0129] The first downlink and uplink TCI state and the second downlink or uplink TCI state;

[0130] The first downlink and uplink TCI state;

[0131] The first downlink or uplink TCI state and the second downlink and uplink TCI states;

[0132] The first downlink or uplink TCI state and the second downlink or uplink TCI states;

[0133] The first downlink or uplink TCI state;

[0134] The second downlink and uplink TCI states;

[0135] The second downlink or uplink TCI state.

[0136] In the embodiments of the present application, the order of the multiple TCI states included in the combination of the first set of TCI states and the second set of TCI states may not be limited. For example, the order in the combination of the first set of TCI states and the second set of TCI states may be {the first downlink and uplink TCI state and the second downlink and uplink TCI states, the first downlink and uplink TCI state and the second downlink or uplink TCI states, the first downlink or uplink TCI state and the second downlink and uplink TCI states, the first downlink or uplink TCI state and the second downlink or uplink TCI states, the first downlink and uplink TCI state, the first downlink or uplink TCI state, the second downlink and uplink TCI state, the second downlink or uplink TCI state}. For another example, the order in the combination of the first set of TCI states and the second set of TCI states may be {the first downlink and uplink TCI state, the first downlink or uplink TCI state, the second downlink and uplink TCI state, the second downlink or uplink TCI state, the first downlink and uplink TCI state and the second downlink and uplink TCI states, the first downlink and uplink TCI state and the second downlink or uplink TCI states, the first downlink or uplink TCI state and the second downlink and uplink TCI states, the first downlink or uplink TCI state and the second downlink or uplink TCI states}.

[0137] In one implementation, the third parameter includes 3 bits or more.

[0138] For example, the third parameter T iIt includes 3 bits, and the values of the 3 bits can be {111, 110, 101, 100, 011, 010, 001, 000}. Among them, 111 can correspond to the first downlink and uplink TCI states and the second downlink and uplink TCI states; 110 can correspond to the first downlink and uplink TCI states and the second downlink or uplink TCI state; 101 can correspond to the first downlink and uplink TCI state; 100 can correspond to the first downlink or uplink TCI state and the second downlink and uplink TCI states; 011 can correspond to the first downlink or uplink TCI state and the second downlink or uplink TCI state; 010 can correspond to the first downlink or uplink TCI state; 001 can correspond to the second downlink and uplink TCI state; 000 can correspond to the second downlink or uplink TCI state. The values of the above third parameter and their corresponding TCI states are only examples rather than limitations, and can be flexibly set according to actual needs. For example, 111 can also correspond to the second downlink or uplink TCI state, and 000 can also correspond to the first downlink and uplink TCI states and the second downlink and uplink TCI states, etc. The third parameter also includes 4 bits or more, and specific examples can be deduced without exhaustive listing.

[0139] In one implementation, the downlink and uplink TCI states include a downlink TCI state and an uplink TCI state. For example, the above first downlink and uplink TCI states include a first downlink TCI state and a first uplink TCI state. Among them, the first downlink TCI state can be before the first uplink TCI state. Again, the above second downlink and uplink TCI states include a second downlink TCI state and a second uplink TCI state. Among them, the second downlink TCI state can be before the second uplink TCI state.

[0140] In one implementation, the downlink or uplink TCI state includes a downlink TCI state or an uplink TCI state. For example, the above first downlink or uplink TCI state includes a first downlink TCI state or a first uplink TCI state. The first downlink or uplink TCI state can also not distinguish between downlink and uplink. For example, it can be directly represented as the first TCI state, and then the uplink or downlink can be indicated in cooperation with an indication bit for indicating the downlink and uplink directions, such as the following fifth parameter. Again, the above second downlink or uplink TCI state includes a second downlink TCI state or a second uplink TCI state. The second downlink or uplink TCI state can also not distinguish between downlink and uplink. For example, it can be directly represented as the second TCI state, and then the uplink or downlink can be indicated in cooperation with an indication bit for indicating the downlink and uplink directions, such as the following fifth parameter.

[0141] In one implementation, the TCI state activation command includes a fourth parameter, and the fourth parameter corresponds to multiple sets of combined TCI states.

[0142] In one embodiment, the sequence number of the TCI state indicated by the fourth parameter corresponds to the TCI code point indicating the TCI state in the physical layer signaling. In the embodiments of the present application, multiple sets of combined TCI states can be indicated by one parameter. For example, in the MAC CE, the fourth parameter FT i indicates multiple sets of combined TCI states. Wherein, i can represent the sequence number of the TCI state indicated by FT i The i-th state indicated by FT i corresponds to the i-th code point indicating the TCI state in the physical layer signaling. Specifically, for example, the first state indicated by FT 1 corresponds to the first code point indicating the TCI state in the physical layer signaling. The eighth state indicated by FT 8 corresponds to the eighth code point indicating the TCI state in the physical layer signaling.

[0143] In one embodiment, the multiple sets of combined TCI states include at least one of the following:

[0144] The first combined TCI state and the second combined TCI state;

[0145] The first combined TCI state;

[0146] The second combined TCI state.

[0147] In the embodiments of the present application, the order of the multiple combined TCI states included in the multiple sets of combined TCI states can be unrestricted. For example, the order in the multiple sets of combined TCI states can be {the first combined TCI state and the second combined TCI state, the first combined TCI state, the second combined TCI state}. Another example, the order in the multiple sets of combined TCI states can be {the first combined TCI state, the first combined TCI state and the second combined TCI state, the second combined TCI state}. Another example, the order in the multiple sets of combined TCI states can be {the first combined TCI state, the second combined TCI state, the first combined TCI state and the second combined TCI state}. The above examples can also include no TCI state.

[0148] In one embodiment, the fourth parameter includes 2 bits or more. For example, the fourth parameter FT i includes 2 bits, and the values of the 2 bits are {11, 10, 01, 00}. Among them, 11 can correspond to the first combined TCI state and the second combined TCI state; 10 can correspond to the first combined TCI state, 01 can correspond to the second combined TCI state. 00 can be unused or can also correspond to no TCI state. Another example, FT iIt includes 3 bits, and the values of the 3 bits can be {111, 110, 101, 100, 011, 010, 001, 000}. Among them, 110 can correspond to the first combined TCI state and the second combined TCI; 101 can correspond to the first combined TCI state; 011 can correspond to the second combined TCI state. FT i The other values can be not used. The values of the above fourth parameter and their corresponding TCI states are only examples rather than limitations, and can be flexibly set according to actual requirements. For example, 11 can also correspond to the second combined TCI state, 01 can also correspond to the first combined TCI state and the second combined TCI state, etc. The fourth parameter also includes 4 bits or more than 4 bits, and specific examples can be deduced without exhaustive listing.

[0149] In one implementation, the combined TCI state indicates that a TCI state includes an uplink TCI state and a downlink TCI state.

[0150] In one implementation, the TCI state activation command includes a fifth parameter, and the fifth parameter is used to indicate uplink or downlink. For example, in the MAC CE, the fifth parameter can represent an indication bit associated with the TCI state ID (TCI state ID), such as the indication bit before the TCI state ID. This indication bit can indicate uplink or downlink. For example, when the indication bit is D / U in the MAC CE format, it can indicate uplink or downlink. The value of this indication bit is 1 to indicate uplink and 0 to indicate downlink. Or, the value of this indication bit is 0 to indicate uplink and 1 to indicate downlink. Again, when the indication bit is R in the MAC CE format, it may not indicate uplink or downlink. The value of this indication bit being 1 or 0 does not indicate uplink or downlink.

[0151] In the embodiments of the present application, the fifth parameter can be combined with one or more of the above first parameter, second parameter, third parameter, and fourth parameter. For example, in the MAC CE, the first parameter can correspond to the first uplink or downlink TCI state, the second parameter can correspond to the second uplink or downlink TCI state, and the fifth parameter can be used to indicate whether these TCI states are uplink or downlink. Again, in the MAC CE, the third parameter can indicate the first uplink or downlink TCI state, and can also indicate the second uplink or downlink TCI state, etc., and the fifth parameter can be used to indicate whether these TCI states are uplink or downlink.

[0152] The representations of the parameters in the embodiments of the present application are F i 、S i 、T i 、FT i etc., which are only examples rather than limitations, and the parameter representations can be modified according to requirements in actual applications. For example, the third parameter or the fourth parameter can also be represented as F i, for another example, the first parameter is represented as PA, the second parameter is represented as PB, the third parameter is represented as P, etc.

[0153] In the embodiments of the present application, one or more parameters in the TCI state activation command can be used to flexibly activate one or more sets of TCI states. Among them, one set of TCI states can correspond to one TRP, and multiple sets of TCI states can respectively correspond to multiple sets of TRP. For example, in the multi-TRP in the MIMO scenario, the function of activating the unified TCI state of multiple TRPs can be realized.

[0154] Figure 4 is a schematic flowchart of a communication method 400 according to another embodiment of the present application. The method 400 can optionally be applied to Figure 1 the system shown, but is not limited thereto. The method includes at least part of the following content.

[0155] S410. The second communication device sends a TCI state activation command, and the TCI state activation command is used to indicate multiple sets of TCI states.

[0156] In one implementation, there is a corresponding relationship between the transmission and reception point TRP and the TCI state, and the multiple sets of TCI states include the unified TCI state of multiple TRPs.

[0157] In one implementation, the multiple sets of TCI states include a first set of TCI states and a second set of TCI states.

[0158] In one implementation, the TCI state activation command includes a first parameter, and the first parameter corresponds to the first set of TCI states.

[0159] In one implementation, the first set of TCI states includes at least one of:

[0160] The first downlink and uplink TCI state;

[0161] The first downlink TCI state;

[0162] The first uplink TCI state;

[0163] No TCI state.

[0164] In one implementation, the first set of TCI states includes at least one of:

[0165] The first downlink and uplink TCI state;

[0166] The first downlink or uplink TCI state;

[0167] No TCI state.

[0168] In one embodiment, the first set of TCI states includes at least one of:

[0169] The first combined TCI state;

[0170] No TCI state.

[0171] In one embodiment, the first parameter includes 2 bits or more.

[0172] In one embodiment, the TCI state activation command includes a second parameter, and the second parameter corresponds to a second set of TCI states.

[0173] In one embodiment, in the TCI state activation command, the first set of TCI states is before the second set of TCI states.

[0174] In one embodiment, the second set of TCI states includes at least one of:

[0175] The second downlink and uplink TCI state;

[0176] The second downlink TCI state;

[0177] The second uplink TCI state;

[0178] No TCI state.

[0179] In one embodiment, the second set of TCI states includes at least one of:

[0180] The second downlink and uplink TCI state;

[0181] The second downlink or uplink TCI state;

[0182] No TCI state.

[0183] In one embodiment, the second set of TCI states includes at least one of:

[0184] The second combined TCI state;

[0185] No TCI state.

[0186] In one embodiment, the second parameter includes 2 bits or more.

[0187] In one embodiment, the sequence number of the TCI state jointly indicated by the first parameter and the second parameter corresponds to the code point indicating the TCI state in the physical layer signaling.

[0188] In one embodiment, the TCI state activation command includes a third parameter, and the third parameter corresponds to a combination of the first set of TCI states and the second set of TCI states.

[0189] In one embodiment, the combination of the first set of TCI states and the second set of TCI states includes at least one of the following:

[0190] The first downlink and uplink TCI state and the second downlink and uplink TCI state;

[0191] The first downlink and uplink TCI state and the second downlink or uplink TCI state;

[0192] The first downlink and uplink TCI state;

[0193] The first downlink or uplink TCI state and the second downlink and uplink TCI state;

[0194] The first downlink or uplink TCI state and the second downlink or uplink TCI state;

[0195] The first downlink or uplink TCI state;

[0196] The second downlink and uplink TCI state;

[0197] The second downlink or uplink TCI state.

[0198] In one embodiment, the third parameter includes 3 bits or more.

[0199] In one embodiment, the sequence number of the TCI state indicated by the third parameter corresponds to the code point indicating the TCI state in the physical layer signaling.

[0200] In one embodiment, the TCI state activation command includes a fourth parameter, and the fourth parameter corresponds to multiple sets of combined TCI states.

[0201] In one embodiment, the multiple sets of combined TCI states include at least one of the following:

[0202] The first combined TCI state and the second combined TCI state;

[0203] The first combined TCI state;

[0204] The second combined TCI state.

[0205] In one embodiment, the fourth parameter includes 2 bits or more.

[0206] In one embodiment, the combined TCI state indicates that an uplink TCI state and a downlink TCI state are included in one TCI state.

[0207] In one embodiment, the sequence number of the TCI state indicated by the fourth parameter corresponds to the TCI code point indicating the TCI state in the physical layer signaling.

[0208] In one embodiment, the downlink and uplink TCI states include a downlink TCI state and an uplink TCI state.

[0209] In one embodiment, the downlink or uplink TCI state includes a downlink TCI state or an uplink TCI state.

[0210] In one embodiment, the TCI state activation command includes a fifth parameter for indicating uplink or downlink.

[0211] In one embodiment, the TCI state activation command is carried by a MAC CE sent by a second communication device, where the first communication device is a terminal device and the second communication device is a network device.

[0212] For a specific example of the second communication device in this embodiment executing method 400, reference may be made to the relevant description of the second communication device, such as a network device, in the method executed by the first communication device described above. For the sake of brevity, it will not be elaborated here.

[0213] In the embodiments of the present application, activating a unified TCI state may include a Joint TCI state and a downlink or uplink TCI state (DL / UL TCI state). In the MAC CE, a parameter of, for example, 2 bits is used to represent the combination of DL / UL TCI states, such as {DL&UL TCI state, DL TCI state, UL TCI state, none}. Among them, the combination of the first set of TCI states and the combination of the second set of TCI states can also be represented by the above 2 bits respectively.

[0214] If the MAC CE of the Joint TCI state is designed separately, the 2-bit parameter can represent the combinations of the following examples {1 st Joint TCI state, 2 nd Joint TCI state, 1 st Joint TCI state and 2 nd Joint TCI state}.

[0215] In the embodiments of the present application, the relationship between the TCI state and the TCI state identifier (State ID) may be that the TCI state identifier is an index (Index) configured for the DL or UL BWP of the serving cell where the TCI state is located. If there is only a TCI state identifier in the MAC CE, it can represent the TCI state pointed to by this index.

[0216] Example 1: The schematic block diagram of MAC CE format 1 is as follows Figure 5 shown:

[0217] In this example, except for parameters F i and S i the meanings of other parameters are the same as those in MAC CE in the related art. Among them, the meaning of F i can include the following examples:

[0218] F i and S i 's 2 bits are used to represent 4 combinations of DL / UL TCI states, such as {DL TCI state & UL TCI state, DL TCI state, UL TCI state, none}. Among them, the meaning of none can be that there is no corresponding TCI state. Specifically, for example, the values of these 2 bits corresponding to these combinations can be {11, 10, 01, 00}. For example, 11 corresponds to DL TCI state & UL TCI state, 10 corresponds to DL TCI state, 01 corresponds to UL TCI state, and 00 corresponds to none. The definition, order of the values of F i and S i and their corresponding TCI states can all change. For example, the 2-bit values of F i and S i can be {10, 01, 00, 11}. 10 corresponds to UL TCI state, 01 corresponds to DL TCI state, 00 corresponds to DL TCI state & UL TCI state, and 11 corresponds to none. In the embodiments of the present application, other ways of value definition are not excluded.

[0219] The F i parameter can correspond to the first set of TCI states; the S i parameter can correspond to the second set of TCI states. In the MAC CE format, all TCI state identification parameters corresponding to F i and S i correspond to the i-th code point in the physical layer DCI, for example, 1 <= i <= 8. The number of code points may also change.

[0220] For the combination "DL TCI state & UL TCI state", in the MAC CE format, the DL TCI state ID and UL TCI State ID will appear simultaneously, and the order of these two TCI state IDs is fixed. For example, the DL TCI state ID always appears in front of the UL TCI state ID or vice versa. Since Fi and S i The parameters are set independently, so there are 16 combinations that can be obtained from the permutations between the 4 combinations corresponding to them. Among them, the combination {none, none} can be invalid because this means that neither the first set nor the second set of TCI states appears in the MAC CE, while F i and / or S i is to indicate a combination of TCI state IDs corresponding to a valid code point. In this format, F i and S i The positions of the parameters are fixed (for example, the order of F i and S i can also be reversed, and other orders can also be included), and the TCI state IDs corresponding to the F i and S i parameters are also arranged in ascending order from low to high according to the i order.

[0221] For example, if the values of F 1 and S 1 are 01 and 11 respectively, it can represent that the combination of the TCI state corresponding to the first code point is {1 st UL TCI state, 2 nd DL TCI state and UL TCI state}. Among them, 1 st UL TCI state is one of the first set of TCI states, corresponding to the first TRP, such as the serving TPR; 2 nd DL TCI state and UL TCI state are one of the second set of TCI states, corresponding to the second TRP, such as the incremental TPR.

[0222] For the Joint TCI state, on the premise of adopting the same MAC CE format, the combinations that F i and S i need to represent are {Joint TCI state, none}. In one example, F i and S i each only requires 1 bit, and their values are different from those of the UL / DL TCI state. For example, the joint TCI state can correspond to {01, 00}, in which case the two values 10 and 11 can be invalid. Specifically, for example, when F 1 is 01 and S 1 is 01, the combination of the TCI state corresponding to the first code point is {1 st Joint TCI state, 2 ndJoint TCI state}. Among them, 1 st Joint TCI state is one of the first set of TCI states, corresponding to the first TRP, such as the serving TPR; 2 nd Joint TCI state is one of the second set of TCI states, corresponding to the second TRP, such as the incremental TPR. Again, F 2 is 01 and S 2 is 00, and the combination of TCI states corresponding to the first code point is {1 st Joint TCI state, none}. Among them, 1 st Joint TCI state is one of the first set of TCI states, corresponding to the first TRP, such as the serving TPR; none is one of the second set of TCI states, corresponding to the second TRP, such as the incremental TPR.

[0223] Example 2: The schematic block diagram of MAC CE format 2 is as Figure 6 shown:

[0224] This format can reuse the D / U bit in the MAC CE of related technologies. Compared with the format in Example 1 in this case, the main difference is that: F i and S i The combination of the corresponding TCI states can become {DL TCI state & UL TCI state, DL / UL TCI state, none}. Among them, DL / UL TCI State represents DL TCI state or UL TCI state. This is because the difference between DL TCI state and UL TCI state can be reflected in the D / U bit.

[0225] For the combination of "DL TCI state and UL TCI state", for the same reason, there is no need to fix the order between the DLTCI state and the UL TCI state either.

[0226] In this format, the design of Joint TCI state can be the same as the MAC CE format in this example because the D / U bit can be ignored in Joint TCI state.

[0227] For example, F 1 and S 1 have values of 11 and 10 respectively, which can represent that the combination of TCI states corresponding to the first code point is {1 st DL TCI state & UL TCI state, 2 ndDL / UL TCI state}. Among them, 1 st The DL TCI state & UL TCI state is one of the first set of TCI states, corresponding to the first TRP, such as the serving TPR; 2 nd The DL / UL TCI state is one of the second set of TCI states, corresponding to the second TRP, such as the incremental TPR.

[0228] Example 3: The schematic block diagram of MAC CE format 3 is as Figure 7 shown:

[0229] The meaning of the D / U bit in the format can be the same as that in the previous format. In this case, the 3 bits of F i can represent the combination between the first set of TCI states and the second set of TCI states. The examples are as follows:

[0230] {1 st DL&UL TCI state and 2 nd DL&UL TCI state,

[0231] 1 st DL&UL TCI state and 2 nd DL / UL TCI state,

[0232] 1 st DL&UL TCI state,

[0233] 1 st DL / UL TCI state and 2nd DL&UL TCI state,

[0234] 1 st DL / UL TCI state and 2 nd DL / UL TCI state,

[0235] 1 st DL / UL TCI state,

[0236] 2 nd DL&UL TCI state,

[0237] 2 nd DL / UL TCI state,}

[0238] Among them, the DL&UL TCI state, which can also be denoted as the DL TCI state&UL TCI state, can represent a pair of DL TCI state and UL TCI State. The DL / UL TCI state can represent the DL TCI State or the UL TCIState. If there is a D / U bit, the order between DL and UL in the DL&UL TCI State does not need to be fixed.

[0239] For example, F 1 has a value of 111, which can represent that the combination of TCI states corresponding to the first code point is {1 st DL&ULTCI state, 2 nd DL&UL TCI state}. F 2 has a value of 110, which can represent that the combination of TCI states corresponding to the first code point is {1 st DL&UL TCI state, 2 nd DL / UL TCI state}. F 3 has a value of 101, which can represent that the combination of TCI states corresponding to the first code point is {1 st DL&UL TCI state, none}.

[0240] The order in the combination between the above first set of TCI states and the second set of TCI states, as well as the corresponding relationship with the value of F i can be adjusted arbitrarily, and there is no limitation in the embodiments of the present application.

[0241] For the Joint TCI State, the 2 bits of F in this format can be used for representation. For example, the coding method in MAC CE format 4 can be used to represent the Joint TCI State. i For example, the coding method in MAC CE format 4 can be used to represent the Joint TCI State.

[0242] Example 4: The schematic block diagram of MAC CE format 4 is as Figure 8 shown:

[0243] For the Joint TCI State, the first set of TCI states and the second set of TCI states can also be combined together. For example, {1 st Joint TCI state and 2 nd Joint TCI state, 1 st Joint TCI state, 2 nd Joint TCIstate}. In this way, only 2 bits are needed to represent all the combinations.

[0244] On the premise of using the same MAC CE format as MAC CE format 1 or format 2, the 2 bits in F i or S i can achieve this purpose. In MAC CE format 3, the 2 bits of F i can achieve this purpose.

[0245] If the MAC CE designed for the joint TCI state adopts an independent MAC CE instead of sharing a MAC CE format with the DL / UL TCI state, its format can be simplified to:

[0246] In this format, both the UL BWP ID and the previous R bit can be omitted because the Joint TCI state ID can be configured in the DL BWP. In this way, 3 bytes of signaling overhead can be saved.

[0247] By adopting the MAC CE format of any of the above examples, the function of activating the unified TCI state can be achieved in the multi-TRP of MIMO.

[0248] Figure 9 is a schematic block diagram of a first communication device 900 according to an embodiment of the present application. The first communication device 900 may include:

[0249] A receiving unit 901, configured to receive a transmission configuration indication TCI state activation command, where the TCI state activation command is used to indicate one or more sets of TCI states.

[0250] In one implementation, there is a correspondence between a transmission reception point TRP and a TCI state, and the one or more sets of TCI states include the unified TCI states of multiple TRPs.

[0251] In one implementation, the one or more sets of TCI states include a first set of TCI states and a second set of TCI states.

[0252] In one implementation, the TCI state activation command includes a first parameter, and the first parameter corresponds to the first set of TCI states.

[0253] In one implementation, the first set of TCI states includes at least one of:

[0254] A first downlink and uplink TCI state;

[0255] A first downlink TCI state;

[0256] A first uplink TCI state;

[0257] No TCI state.

[0258] In one embodiment, the first set of TCI states includes at least one of:

[0259] The first downlink and uplink TCI state;

[0260] The first downlink or uplink TCI state;

[0261] No TCI state.

[0262] In one embodiment, the first set of TCI states includes at least one of:

[0263] The first combined TCI state;

[0264] No TCI state.

[0265] In one embodiment, the first parameter includes 2 bits or more.

[0266] In one embodiment, the TCI state activation command includes a second parameter, and the second parameter corresponds to a second set of TCI states.

[0267] In one embodiment, in the TCI state activation command, the first set of TCI states is before the second set of TCI states.

[0268] In one embodiment, the second set of TCI states includes at least one of:

[0269] The second downlink and uplink TCI state;

[0270] The second downlink TCI state;

[0271] The second uplink TCI state;

[0272] No TCI state.

[0273] In one embodiment, the second set of TCI states includes at least one of:

[0274] The second downlink and uplink TCI state;

[0275] The second downlink or uplink TCI state;

[0276] No TCI state.

[0277] In one embodiment, the second set of TCI states includes at least one of:

[0278] The second combined TCI state;

[0279] No TCI state.

[0280] In one embodiment, the second parameter includes 2 bits or more.

[0281] In one embodiment, the sequence number of the TCI state jointly indicated by the first parameter and the second parameter corresponds to the code point indicating the TCI state in the physical layer signaling.

[0282] In one embodiment, the TCI state activation command includes a third parameter, and the third parameter corresponds to a combination of a first set of TCI states and a second set of TCI states.

[0283] In one embodiment, the combination of the first set of TCI states and the second set of TCI states includes at least one of the following:

[0284] A first downlink and uplink TCI state and a second downlink and uplink TCI state;

[0285] A first downlink and uplink TCI state and a second downlink or uplink TCI state;

[0286] A first downlink and uplink TCI state;

[0287] A first downlink or uplink TCI state and a second downlink and uplink TCI state;

[0288] A first downlink or uplink TCI state and a second downlink or uplink TCI state;

[0289] A first downlink or uplink TCI state;

[0290] A second downlink and uplink TCI state;

[0291] A second downlink or uplink TCI state.

[0292] In one embodiment, the third parameter includes 3 bits or more.

[0293] In one embodiment, the sequence number of the TCI state indicated by the third parameter corresponds to the code point indicating the TCI state in the physical layer signaling.

[0294] In one embodiment, the TCI state activation command includes a fourth parameter, and the fourth parameter corresponds to multiple sets of combined TCI states.

[0295] In one embodiment, the multiple sets of combined TCI states include at least one of the following:

[0296] A first combined TCI state and a second combined TCI state;

[0297] A first combined TCI state;

[0298] A second combined TCI state.

[0299] In one embodiment, the fourth parameter includes 2 bits or more.

[0300] In one embodiment, the combined TCI state indicates that an uplink TCI state and a downlink TCI state are included in a TCI state.

[0301] In one embodiment, the sequence number of the TCI state indicated by the fourth parameter corresponds to the TCI code point indicating the TCI state in the physical layer signaling.

[0302] In one embodiment, the downlink and uplink TCI states include a downlink TCI state and an uplink TCI state.

[0303] In one embodiment, the downlink or uplink TCI state includes a downlink TCI state or an uplink TCI state.

[0304] In one embodiment, the TCI state activation command includes a fifth parameter, and the fifth parameter is used to indicate uplink or downlink.

[0305] In one embodiment, the TCI state activation command is carried by a MAC CE sent by a second communication device. The first communication device is a terminal device, and the second communication device is a network device.

[0306] The first communication device 900 in the embodiments of the present application can implement the corresponding functions of the first communication device in the foregoing communication method 300 embodiments. For the corresponding processes, functions, implementation manners, and beneficial effects of each module (sub-module, unit, or component, etc.) in the first communication device 900, reference may be made to the corresponding descriptions in the foregoing method embodiments, which will not be elaborated herein. It should be noted that the functions described for each module (sub-module, unit, or component, etc.) in the first communication device 900 of the application embodiments can be implemented by different modules (sub-modules, units, or components, etc.), or can be implemented by the same module (sub-module, unit, or component, etc.).

[0307] Figure 10 It is a schematic block diagram of a second communication device 1000 according to an embodiment of the present application. The second communication device 1000 may include:

[0308] A sending unit 1001, configured to send a TCI state activation command, where the TCI state activation command is used to indicate multiple sets of TCI states.

[0309] In one embodiment, there is a corresponding relationship between a transmission reception point TRP and a TCI state, and the multiple sets of TCI states include unified TCI states of multiple TRPs.

[0310] In one embodiment, the multiple sets of TCI states include a first set of TCI states and a second set of TCI states.

[0311] In one embodiment, the TCI state activation command includes a first parameter corresponding to a first set of TCI states.

[0312] In one embodiment, the first set of TCI states includes at least one of:

[0313] A first downlink and uplink TCI state;

[0314] A first downlink TCI state;

[0315] A first uplink TCI state;

[0316] No TCI state.

[0317] In one embodiment, the first set of TCI states includes at least one of:

[0318] A first downlink and uplink TCI state;

[0319] A first downlink or uplink TCI state;

[0320] No TCI state.

[0321] In one embodiment, the first set of TCI states includes at least one of:

[0322] A first combined TCI state;

[0323] No TCI state.

[0324] In one embodiment, the first parameter includes 2 bits or more.

[0325] In one embodiment, the TCI state activation command includes a second parameter corresponding to a second set of TCI states.

[0326] In one embodiment, in the TCI state activation command, the first set of TCI states is before the second set of TCI states.

[0327] In one embodiment, the second set of TCI states includes at least one of:

[0328] A second downlink and uplink TCI state;

[0329] A second downlink TCI state;

[0330] A second uplink TCI state;

[0331] No TCI state.

[0332] In one embodiment, the second set of TCI states includes at least one of:

[0333] A second downlink and uplink TCI state;

[0334] The second downlink or uplink TCI state;

[0335] No TCI state.

[0336] In one embodiment, the second set of TCI states includes at least one of:

[0337] The second combined TCI state;

[0338] No TCI state.

[0339] In one embodiment, the second parameter includes 2 bits or more.

[0340] In one embodiment, the sequence number of the TCI state jointly indicated by the first parameter and the second parameter corresponds to the code point indicating the TCI state in the physical layer signaling.

[0341] In one embodiment, the TCI state activation command includes a third parameter, and the third parameter corresponds to a combination of the first set of TCI states and the second set of TCI states.

[0342] In one embodiment, the combination of the first set of TCI states and the second set of TCI states includes at least one of the following:

[0343] The first downlink and uplink TCI state and the second downlink and uplink TCI state;

[0344] The first downlink and uplink TCI state and the second downlink or uplink TCI state;

[0345] The first downlink and uplink TCI state;

[0346] The first downlink or uplink TCI state and the second downlink and uplink TCI state;

[0347] The first downlink or uplink TCI state and the second downlink or uplink TCI state;

[0348] The first downlink or uplink TCI state;

[0349] The second downlink and uplink TCI state;

[0350] The second downlink or uplink TCI state.

[0351] In one embodiment, the third parameter includes 3 bits or more.

[0352] In one embodiment, the sequence number of the TCI state indicated by the third parameter corresponds to the code point indicating the TCI state in the physical layer signaling.

[0353] In one embodiment, the TCI state activation command includes a fourth parameter, and the fourth parameter corresponds to multiple sets of combined TCI states.

[0354] In one embodiment, the multiple sets of combined TCI states include at least one of the following:

[0355] A first combined TCI state and a second combined TCI state;

[0356] The first combined TCI state;

[0357] The second combined TCI state.

[0358] In one embodiment, the fourth parameter includes 2 bits or more.

[0359] In one embodiment, the combined TCI state indicates that an uplink TCI state and a downlink TCI state are included in a TCI state.

[0360] In one embodiment, the sequence number of the TCI state indicated by the fourth parameter corresponds to the TCI code point indicating the TCI state in the physical layer signaling.

[0361] In one embodiment, the downlink and uplink TCI states include a downlink TCI state and an uplink TCI state.

[0362] In one embodiment, the downlink or uplink TCI state includes a downlink TCI state or an uplink TCI state.

[0363] In one embodiment, the TCI state activation command includes a fifth parameter, and the fifth parameter is used to indicate downlink or uplink.

[0364] In one embodiment, the TCI state activation command is carried by a MAC CE sent by a second communication device. The first communication device is a terminal device, and the second communication device is a network device.

[0365] The second communication device 1000 in the embodiments of the present application can implement the corresponding functions of the second communication device in the foregoing communication method 400 embodiments. For the corresponding processes, functions, implementation manners, and beneficial effects of each module (sub-module, unit, or component, etc.) in the second communication device 1000, reference may be made to the corresponding descriptions in the foregoing method embodiments, which will not be elaborated herein. It should be noted that the functions described for each module (sub-module, unit, or component, etc.) in the second communication device 1000 in the embodiments of the application can be implemented by different modules (sub-modules, units, or components, etc.), or can be implemented by the same module (sub-module, unit, or component, etc.).

[0366] Figure 11Schematic structural diagram of a communication device 1100 according to an embodiment of the present application. The communication device 1100 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory, so that the communication device 1100 implements the method in the embodiment of the present application.

[0367] In one embodiment, the communication device 1100 may further include a memory 1120. Among them, the processor 1110 can call and run a computer program from the memory 1120, so that the communication device 1100 implements the method in the embodiment of the present application.

[0368] Among them, the memory 1120 can be a separate device independent of the processor 1110, or can be integrated in the processor 1110.

[0369] In one embodiment, the communication device 1100 may further include a transceiver 1130. The processor 1110 can control the transceiver 1130 to communicate with other devices. Specifically, it can send information or data to other devices, or receive information or data sent by other devices.

[0370] Among them, the transceiver 1130 can include a transmitter and a receiver. The transceiver 1130 may further include an antenna, and the number of antennas can be one or more.

[0371] In one embodiment, the communication device 1100 may be the first communication device in the embodiment of the present application, and the communication device 1100 can implement the corresponding processes implemented by the first communication device in the various methods of the embodiment of the present application. For the sake of brevity, it will not be elaborated here.

[0372] In one embodiment, the communication device 1100 may be the second communication device in the embodiment of the present application, and the communication device 1100 can implement the corresponding processes implemented by the second communication device in the various methods of the embodiment of the present application. For the sake of brevity, it will not be elaborated here.

[0373] Figure 12 Schematic structural diagram of a chip 1200 according to an embodiment of the present application. The chip 1200 includes a processor 1210, and the processor 1210 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0374] In one embodiment, the chip 1200 may further include a memory 1220. Among them, the processor 1210 can call and run a computer program from the memory 1220 to implement the method executed by the first communication device or the second communication device in the embodiment of the present application.

[0375] Among them, the memory 1220 can be a separate device independent of the processor 1210 or can be integrated in the processor 1210.

[0376] In one implementation, the chip 1200 may further include an input interface 1230. Among them, the processor 1210 can control the input interface 1230 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

[0377] In one implementation, the chip 1200 may further include an output interface 1240. Among them, the processor 1210 can control the output interface 1240 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

[0378] In one implementation, the chip can be applied to the first communication device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the first communication device in each method of the embodiments of the present application. For the sake of brevity, it will not be elaborated here.

[0379] In one implementation, the chip can be applied to the second communication device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the second communication device in each method of the embodiments of the present application. For the sake of brevity, it will not be elaborated here.

[0380] The chips applied to the first communication device and the second communication device can be the same chip or different chips.

[0381] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0382] The above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the above-mentioned general-purpose processor can be a microprocessor or any conventional processor, etc.

[0383] The memory mentioned above can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM).

[0384] It should be understood that the above memory is for illustrative but not limiting purposes. For example, the memory in the embodiments of the present application can also be a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), a Direct Rambus RAM (DR RAM), and so on. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memories.

[0385] Figure 13 It is a schematic block diagram of a communication system 1300 according to an embodiment of the present application. The communication system 1300 includes a first communication device 1310 and a second communication device 1320. The first communication device 1310 is configured to receive a TCI state activation command, and the TCI state activation command is used to indicate one or more sets of TCI states. The second communication device 1320 is configured to send the TCI state activation command.

[0386] Among them, the first communication device 1310 can be used to implement the corresponding functions of the first communication device, such as a terminal device, in the above method, and the second communication device 1320 can be used to implement the corresponding functions of the second communication device, such as a network device, in the above method. For the sake of brevity, it will not be elaborated here.

[0387] 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 instructions. When the computer instructions are loaded and executed on a computer, the processes or functions in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a Solid State Disk (SSD)), etc.

[0388] It should be understood that in various embodiments of the present application, the sequence numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0389] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0390] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application and should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method, comprising: A first communication device receives a Transmission Configuration Indicator (TCI) state activation command, where the TCI state activation command is used to indicate one or more sets of TCI states.

2. The method according to claim 1, wherein, There is a corresponding relationship between the Transmission and Reception Point (TRP) and the TCI state, and the multiple sets of TCI states include unified TCI states of multiple TRPs.

3. The method according to claim 1 or 2, wherein, The multiple sets of TCI states include a first set of TCI states and a second set of TCI states.

4. The method according to any one of claims 1 to 3, wherein, The TCI state activation command includes a first parameter, and the first parameter corresponds to the first set of TCI states.

5. The method according to claim 4, wherein, The first set of TCI states includes at least one of: A first downlink and uplink TCI state; A first downlink TCI state; A first uplink TCI state; No TCI state.

6. The method according to claim 4, wherein, The first set of TCI states includes at least one of: A first combined TCI state; No TCI state.

7. The method according to any one of claims 4 to 6, wherein, The first parameter includes 2 bits or more.

8. The method according to any one of claims 1 to 7, wherein, The TCI state activation command is carried by a MAC CE sent by a second communication device. The first communication device is a terminal device, and the second communication device is a network device.

9. A communication method, comprising: A second communication device sends a TCI state activation command, where the TCI state activation command is used to indicate multiple sets of TCI states.

10. The method according to claim 9, wherein, The TCI state activation command includes a first parameter, and the first parameter corresponds to the first set of TCI states.

11. The method according to claim 10, wherein, The TCI state activation command includes a second parameter, and the second parameter corresponds to the second set of TCI states.

12. The method according to claim 11, wherein, The second set of TCI states includes at least one of: A second downlink and uplink TCI state; A second downlink TCI state; A second uplink TCI state; No TCI state.

13. The method according to claim 11, wherein, The second set of TCI states includes at least one of: A second combined TCI state; No TCI state.

14. The method according to any one of claims 11 to 13, wherein, The second parameter includes 2 bits or more.

15. A terminal device, comprising: A processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the method according to any one of claims 1 to 8.

16. A network device, comprising: A processor and a memory, the memory being used for storing a computer program, the processor being used for calling and running the computer program stored in the memory, so that the network device executes the method according to any one of claims 9 to 14.

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