WO2025030565A1 - Unified transmission configuration indication state indication method and apparatus, and receiving method and apparatus - Google Patents

Abstract

Embodiments of the present application provide a unified transmission configuration indication (TCI) state indication method and apparatus, and a receiving method and apparatus. The receiving method comprises: a terminal device receives first information used for indicating/activating unified TCI states, the first information being a first MAC CE, the first MAC CE comprising at least one TCI codepoint, and one TCI codepoint among the at least one TCI codepoint corresponding to one unified TCI state or two unified TCI states, wherein the latest spatial filter or QCL reference used by the terminal device for transmission or reception before receiving the first information is not indicated/activated by the first MAC CE; and the terminal device receives second information carried by a PDCCH, the second information being used for indicating one or two unified TCI states among the unified TCI states indicated/activated by the first information, the second information comprising a first TCI codepoint among the at least one TCI codepoint, and the first TCI codepoint corresponding to the one or two unified TCI states.

Description

Unified transmission configuration indication status indication method, receiving method and device Technical Field

The embodiments of the present application relate to the field of communication technologies.

Background Art

With the advancement of 3GPP standardization, multiple TRPs or multi-TRPs (multiple transmission and reception point, mTRP or multi-TRP or MTRP) have become important scenarios for 5G NR (new radio) systems. Compared with single TRP or single TRP (sTRP or STRP) scenarios, mTRP-based transmission can achieve the purpose of improving throughput or reliability.

In previous standardization work, during the standardization process of release 16 (Rel-16), the transmission of the physical downlink shared channel (PDSCH) based on mTRP was standardized.

During the standardization process of release 17 (Rel-17), the transmission of the Physical Downlink Control Channel (PDCCH), Physical Uplink Shared Channel (PUSCH), and Physical Uplink Control Channel (PUCCH) based on mTRP was standardized. In addition, in Rel-17, the unified transmission configuration indication (TCI) framework was standardized. The unified TCI can refer to the use of a unified downlink QCL reference for PDCCH, PDSCH, and CSI-RS, and a unified uplink transmission spatial filter for PUSCH, PUCCH, and SRS. The unified TCI in Rel-17 is mainly designed for sTRP scenarios.

It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology part of the present application.

Summary of the invention

The inventors found that during the standardization process of release 18 (Rel-18), it is necessary to The TCI mechanism is extended to the mTRP scenario. When the terminal device receives RRC parameters configured for Rel-18 mTRP transmission after the initial random access or in the sTRP scenario in Rel-17, how to determine the TCI state of the application is a problem that needs to be solved.

In response to at least one of the above problems, an embodiment of the present application provides a unified transmission configuration indication status indication method, a receiving method and a device.

According to one aspect of an embodiment of the present application, a unified transmission configuration indication status indication receiving method is provided, which is applied to a terminal device, and the method includes:

The terminal device receives first information for indicating/activating a unified TCI state, the first information is a first MAC CE, the first MAC CE includes at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the latest spatial filter or QCL reference used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE; and,

The terminal device receives second information carried by PDCCH, the second information being used to indicate one or two unified TCI states indicated/activated by the first information, the second information including a first TCI codepoint among the at least one TCI codepoint, the first TCI codepoint corresponding to the one or two unified TCI states.

According to another aspect of an embodiment of the present application, a unified transmission configuration indication state indication method is provided, which is applied to a network device, and the method includes:

Sending first information for indicating/activating a unified TCI state to a terminal device, wherein the first information is a first MAC CE, the first MAC CE includes at least one TCI codepoint, and one TCI codepoint of the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the latest spatial filter or QCL reference used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE;

Sending second information carried by PDCCH to the terminal device, wherein the second information is used to indicate one or two unified TCI states indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.

According to another aspect of an embodiment of the present application, a unified transmission configuration indication status indication receiving device is provided, which is configured in a terminal device, wherein the device includes:

A transceiver unit, which receives first information for indicating/activating a unified TCI state, wherein the first information is a first media access control element (MAC CE), wherein the first MAC CE includes at least one transmission configuration indication code point (TCI codepoint), wherein one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or quasi co-location (QCL) reference used for sending or receiving by the transceiver unit last (latest) before receiving the first information is not indicated/activated by the first MAC CE;

The transceiver unit receives second information carried by a physical downlink control channel (PDCCH), the second information being used to indicate one or two unified TCI states indicated/activated by the first information, the second information including a first TCI codepoint among the at least one TCI codepoint, the first TCI codepoint corresponding to the one or two unified TCI states.

According to another aspect of an embodiment of the present application, a unified transmission configuration indication state indication device is provided, which is configured in a network device, and the device includes:

A transceiver unit, which sends first information for indicating/activating a unified TCI state to a terminal device, wherein the first information is a first MAC CE, and the first MAC CE includes at least one TCI codepoint, and one TCI codepoint of the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or QCL reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE;

The transceiver unit sends second information carried by PDCCH, the second information is used to indicate one or two unified TCI states indicated/activated by the first information, the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.

According to another aspect of an embodiment of the present application, a communication system is provided, including:

A terminal device, which receives first information for indicating/activating a unified TCI state, wherein the first information is a first MAC CE, wherein the first MAC CE includes at least one TCI codepoint, wherein one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the terminal device, before receiving the first information, the latest spatial filter or QCL reference used for sending or receiving is not indicated/activated by the first MAC CE; and further receives second information carried by a PDCCH, wherein the second information is used to indicate one or two unified TCI states in the unified TCI state indicated/activated by the first information, and the second information includes the at least one TCI a first TCI codepoint in the codepoint, the first TCI codepoint corresponding to the one or two unified TCI states;

A network device transmits the first information and the second information.

One of the beneficial effects of the embodiments of the present application is that: a terminal device receives first information for indicating/activating a unified TCI state, the first information is a first media access control element (MAC CE), the first MAC CE includes at least one transmission configuration indication code point (TCI codepoint), and one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein, before receiving the first information, the terminal device's latest spatial filter or quasi-co-site (QCL) reference used for sending or receiving is not indicated/activated by the first MAC CE; the terminal device also receives second information carried by a physical downlink control channel (PDCCH), the second information is used to indicate one or two unified TCI states in the unified TCI state indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states. As a result, the terminal device can clearly determine the unified TCI state to be used based on the first information and the second information, thereby effectively improving the reliability of transmission.

With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the spirit and clauses of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

It should be emphasized that the term “include/comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components.

BRIEF DESCRIPTION OF THE DRAWINGS

The elements and features described in one figure or one implementation of the present application embodiment may be combined with the elements and features shown in one or more other figures or implementations. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one implementation.

FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

Figure 2-a is a schematic diagram of a separate unified TCI state of an embodiment of the present application;

Figure 2-b is a schematic diagram of the unified TCI state of an embodiment of the present application;

FIG3 is a schematic diagram of a unified transmission configuration indication status indication receiving method according to an embodiment of the present application;

FIG4 is a schematic diagram of the association relationship of mTRP related parameters in an embodiment of the present application;

FIG5 is a schematic diagram of a unified transmission configuration indication state indication method according to an embodiment of the present application;

6 is a schematic diagram of a unified transmission configuration indication state indication receiving device according to an embodiment of the present application;

7 is a schematic diagram of a unified transmission configuration indication state indication device according to an embodiment of the present application;

FIG8 is a schematic diagram of a terminal device according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a network device according to an embodiment of the present application.

DETAILED DESCRIPTION

With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the description and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents falling within the scope of the attached claims.

In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of title, but do not indicate the spatial arrangement or temporal order of these elements, etc., and these elements should not be limited by these terms. The term "and/or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

In the embodiments of the present application, the singular forms "a", "the", etc. include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

In an embodiment of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.

Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, such as but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), etc., and/or other communication protocols currently known or to be developed in the future.

In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. The network device may include, but is not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

Among them, base stations may include but are not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB) and 5G base station (gNB), etc., and may also include remote radio heads (RRH, Remote Radio Head), remote radio units (RRU, Remote Radio Unit), relays or low-power nodes (such as femeto, pico, etc.). And the term "base station" may include some or all of their functions, and each base station can provide communication coverage for a specific geographical area. The term "cell" can refer to a base station and/or its coverage area, depending on the context in which the term is used.

In the embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to a device that accesses a communication network through a network device and receives network services. The terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and the like.

Among them, terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDA, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measuring, such as but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device to device (D2D) terminal, machine to machine (M2M) terminal, and the like.

In addition, the term "network side" or "network device side" refers to one side of the network, which may be a base station, or may include one or more network devices as above. The term "user side" or "terminal side" or "terminal device side" refers to one side of the user or terminal, which may be a UE, or may include one or more terminal devices as above. Unless otherwise specified herein, "device" may refer to either a network device or a terminal device.

In the embodiments of the present application, the meanings of joint TCI state and joint TCI state are interchangeable; the meanings of downlink TCI state and DL TCI state are interchangeable; the meanings of uplink TCI state and UL TCI state are interchangeable; the meanings of "high-level parameters", "high-level configuration" and "RRC parameters" are interchangeable; Unified, unified, and unified are interchangeable; the meanings of "spatial filter", "uplink spatial filter" and "uplink transmit spatial filter" are interchangeable.

In an embodiment of the present application, if the uplink/downlink transmission direction is not restricted, the "first TCI state" may refer to the first downlink TCI state, may refer to the first uplink TCI state, or may refer to the first combined TCI state, and the "second TCI state" may refer to the second downlink TCI state, may refer to the second uplink TCI state, or may refer to the second combined TCI state; if the uplink/downlink transmission direction is limited, it specifically refers to the first TCI state and the second TCI state in this transmission direction.

For example, for downlink transmission, the first TCI state may refer to the first downlink TCI state or the first combined TCI state, and the second TCI state may refer to the second downlink TCI state or the second combined TCI state.

For uplink transmission, the first TCI state may refer to the first uplink TCI state, may refer to the first combined TCI state, and the second TCI state may refer to the second uplink TCI state or the second combined TCI state.

In the embodiments of the present application, the meanings of "a set of (unified) TCI states" and "a (unified) TCI state corresponding to a TCI codepoint" are interchangeable.

The following examples illustrate the scenarios involved in the embodiments of the present application, but the present application is not limited thereto.

In the scenario of unified TCI sTRP of Rel-17, the network device uses radio resource control (RRC) signaling to configure M (M≥1) groups of TCI states (TCI states) for the terminal device, uses the medium access control (MAC) control element (CE) to activate N (N≤8) groups of TCI states in the M groups of TCI states, and uses the downlink control information DCI to indicate L (1≤L≤N) groups of TCI states in the N groups of TCI states. Among them, the transmission configuration indication (TCI) field of DCI (specifically DCI format 1_1 or DCI format 1_2) indicates a group of TCI states, and each group of TCI states includes one or more TCI states. For the convenience of expression, the TCI state indicated by the TCI field of DCI is referred to as the TCI state indicated by DCI or the indicated TCI state (indicated TCI state).

A TCI state may include or correspond to one or two source reference signals (source RS, source Reference Signal). The source reference signal can provide a quasi co-location (QCL) reference for downlink reception (hereinafter, the QCL reference will also be referred to as beam information), which is called the downlink source reference signal. The source reference signal can provide a spatial filter for uplink transmission, which is called the uplink source reference signal. The downlink source reference signal provides a QCL reference for a downlink channel/signal reception, which means that the beam used by the terminal device to receive a certain channel/signal has the same large-scale characteristics as some channels of the downlink source reference signal. The uplink source reference signal provides a spatial filter for a certain uplink channel/signal transmission, which means that the beam used by the terminal device to transmit a certain channel/signal has the same large-scale characteristics as some channels of the uplink source reference signal.

TCI state includes separate DL/UL TCI state and joint DL/UL TCI state. "Separate" in this application refers to separate uplink and downlink indications, and "joint" refers to the combination of uplink and downlink. Separate TCI state includes downlink TCI state and uplink TCI state, wherein the source reference signal included in the downlink TCI state is the downlink source reference signal, and the source reference signal included in the uplink TCI state is the uplink source reference signal. The source reference signal included in the joint TCI state is both a downlink source reference signal and an uplink source reference signal.

Among them, the downlink TCI state only acts on the downlink beam; the uplink TCI state only acts on the uplink beam (the uplink beam is also called the uplink transmit spatial filter); the joint TCI state acts on the downlink beam (receiving beam) and the uplink beam (transmitting beam) at the same time. In other words, the downlink beam and the uplink beam use the same beam, but the beam directions are opposite, that is, there is reciprocity between the uplink and downlink beams.

The TCI field can indicate a joint TCI state, or a downlink TCI state and/or an uplink TCI state (separate DL/UL TCI). These two modes (separate and joint) can be configured through RRC signaling. For Rel-17 unified TCI, a TCI field indicates a joint TCI state, or a downlink TCI state, or an uplink TCI state, or a downlink TCI state and an uplink TCI state.

In the mTRP scenario, mTRP transmission includes mTRP transmission based on single DCI (single Downlink Control Information, S-DCI) and mTRP transmission based on multiple DCI (multiple DCI, M-DCI).

For mTRP transmission based on S-DCI, one DCI schedules the uplink and downlink transmission of two TRPs, which is more suitable for the situation where the backhaul between TRPs is ideal; for mTRP transmission based on M-DCI, two TRPs use two DCIs to schedule the uplink and downlink transmission of their respective TRPs, which is more suitable for the situation where the backhaul between TRPs is not ideal. The following discussion is all about MTRP based on S-DCI.

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a situation taking a terminal device and a network device as an example. As shown in FIG. 1 , a communication system 100 may include a first TRP 101, a second TRP 102, and a terminal device 103. Among them, the first TRP 101 and the second TRP 102 may be network devices. For simplicity, FIG. 1 only illustrates a PDSCH channel between two network devices and a terminal device as an example, but the embodiment of the present application is not limited thereto.

In the embodiment of the present application, existing services or future services can be sent between the first TRP 101, the second TRP 102 and the terminal device 103. For example, these services may include but are not limited to: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

As shown in FIG1 , in the mTRP transmission scenario, the terminal device receives two PDSCHs from the first TRP 101 and the second TRP 102, and the two PDSCHs may be in the form of space division, time division, frequency division, etc. Taking the form of time division as an example, the terminal device 103 receives the PDSCH sent by the first TRP 101 in the first time period, receives the PDSCH sent by the second TRP 102 in the second time period, and so on. The terminal device receives the two PDSCHs according to the QCL references provided by TCI state 1 (first TCI state) corresponding to the first TRP 101 and TCI state 2 (second TCI state) corresponding to the second TRP 102, respectively.

In the unified TCI solution under the mTRP transmission scenario, for the UE, each TRP has a downlink (DL) link and an uplink (UL) link, that is, there are a total of 4 links between the UE and the two TRPs, namely, the downlink between the UE and the first TRP (first downlink), the uplink between the UE and the first TRP (first uplink), the downlink between the UE and the second TRP (second downlink), and the uplink between the UE and the second TRP (second uplink).

In the MTRP transmission scenario, the UE has data transmission with more than one TRP, such as sending data to two TRPs in the uplink direction and/or receiving data from two TRPs in the downlink direction. In the STRP transmission scenario, the UE has data transmission with only one TRP. In the unified TCI solution under the mTRP transmission scenario, for the convenience of description, TCI state can be equivalently replaced by unified TCI state.

In the unified TCI solution under the mTRP transmission scenario, when the RRC parameter unifiedTCI-StateType is set to 'separate', the unified TCI states corresponding to the above four links are {first downlink unified TCI state (DL TCI state 1), first uplink unified TCI state (UL TCI state 1), second downlink unified TCI state (DL TCI state 2), second uplink unified TCI state (UL TCI state 2)}. Figure 2-a is a schematic diagram of a separate unified TCI state of an embodiment of the present application, as shown in Error! Reference source not found. -a, the first downlink unified TCI state, the first uplink unified TCI state, the second downlink unified TCI state, and the second uplink unified TCI state provide QCL references or spatial filters for the first downlink, the first uplink, the second downlink, and the second uplink, respectively. In this case, the UE needs to maintain the above four unified TCI states and update the four unified TCI states according to the indicated TCI state indicated by the DCI.

In the unified TCI solution under the mTRP transmission scenario, when the RRC parameter unifiedTCI-StateType takes the value of ‘joint’, the unified TCI states corresponding to the above four links are {first joint unified TCI state (joint TCI state 1), second joint unified TCI state (joint TCI state 2)}. Figure 2-b is a schematic diagram of the joint unified TCI state of an embodiment of the present application, as shown in Error! Reference source not found. -b, the first joint unified TCI state provides QCL reference or spatial filter for the first downlink and the first uplink, and the second joint unified TCI state provides QCL reference or spatial filter for the second downlink and the second uplink. In this case, the terminal needs to maintain the above two unified TCI states and update the two unified TCI states according to the indicated TCI state indicated by the DCI.

The following is an exemplary description of the main steps to indicate the unified TCI state.

-RRC configuration

When the RRC parameter unifiedTCI-StateType is set to 'joint', the RRC layer configures up to 128 TCI states in the dl-OrJointTCI-StateList list. These TCI states are joint TCI states, which can provide QCL reference or spatial filter for both downlink and uplink.

When the RRC parameter unifiedTCI-StateType is set to 'separate', the RRC layer will configure up to 128 TCI states in the dl-OrJointTCI-StateList list. These TCI states are separate DL TCI states (DL TCI states), which can provide QCL reference for downlink reception. At the same time, the RRC layer will also configure up to 64 TCI states in the ul-TCI-ToAddModList list. These TCI states are separate UL TCI states (UL TCI states), which can provide spatial filters for uplink transmission.

-MAC-CE activation/deactivation

Through the Unified TCI States Activation/Deactivation MAC-CE command, up to 8 groups of TCI States are selected and activated from the TCI states configured by RRC. These up to 8 groups of TCI States correspond to the 8 TCI codepoints that can be indicated by the TCI field in the DCI.

In Rel-17, one or two TCI states (i.e., a group of TCI states) can be activated for each codepoint, which can provide spatial filters or QCL references for the uplink and/or downlink of the UE to a single TRP.

In Rel-18, due to the extension to support MTRP transmission (for example, 2TRP transmission), there are more possible TCI state combinations that can be activated for each TCI codepoint.

-DCI indication

The TCI field (Transmission Configuration Indication field) of DCI format 1_1/1_2 selects a set of TCI states activated in MAC-CE for receiving or sending the corresponding channel/signal. One value of the TCI field corresponds to one TCI codepoint. Currently, the maximum width of the TCI field is 3 bits, which can indicate up to 2 ³ = 8 TCI codepoints.

The 3-bit TCI field has 8 possible encoding values: 000, 001, 010, 011, 100, 101, 110, 111. Each encoding value can be called a TCI codepoint. There are 8 TCI codepoints for 8 encoding values, namely TCI codepoint 1, TCI codepoint 2, ..., TCI codepoint 8, which correspond to the 8 TCI groups in MAC CE.

The DL/joint TCI state indicated by the above three steps can provide a QCL reference for PDSCH reception, a QCL reference for PDCCH reception, and a QCL reference for CSI-RS at the UE end. The UL/joint TCI state indicated by the above three steps can provide a spatial filter for PUSCH transmission, a spatial filter for PUCCH transmission, and a spatial filter for SRS transmission at the UE end.

The inventor found that the unified TCI of Rel-17 is only applicable to the sTRP scenario. Considering the importance of mTRP, it is necessary to design a corresponding unified TCI mechanism for the mTRP scenario. 3GPP will standardize the unified TCI of mTRP in Rel-18. At present, the unified TCI of mTRP has been identified as one of the project contents of Rel-18, and the standardization work of Rel-18 is in progress.

However, how to determine the TCI state of the application when the terminal device receives RRC parameters configured for mTRP transmission after the initial random access or in the sTRP scenario in Rel-17 is still under discussion.

For example, in the first sTRP transmission scenario (initial random access scenario):

Under the unified TCI framework, after the initial random access, and before the unified TCI state activation/deactivation MAC CE command takes effect, the UE will use a default downlink QCL reference and a default spatial filter (uplink spatial filter, UL TX spatial filter). At this time, the UE only has data transmission with a single TRP, and can be considered to work in the first sTRP transmission scenario.

Second sTRP transmission scenario:

The second sTRP transmission scenario may be a sTRP transmission scenario of Rel-17. Under the unified TCI framework, the UE operates in the sTRP transmission scenario of Rel-17. For example, the UE receives RRC parameters configured for sTRP transmission (or RRC parameters configured with sTRP transmission), and determines and uses a TCI state according to the received Unified TCI States Activation/Deactivation MAC CE and DCI indication.

The prior art has the following problems:

When the UE is in the first sTRP transmission scenario or the second sTRP transmission scenario, if the UE receives RRC parameters configured for mTRP transmission (or RRC parameters configured with mTRP transmission), how to determine the TCI state to be used based on the received Unified TCI States Activation/Deactivation MAC CE command and the TCI state indicated in the DCI becomes an urgent problem to be solved.

In response to at least one of the above problems, an embodiment of the present application provides a unified transmission configuration indication status indication method, a receiving method and a device.

Embodiments of the first aspect

An embodiment of the present application provides a unified transmission configuration indication status indication receiving method, which is applied on the terminal device side.

FIG3 is a schematic diagram of a unified transmission configuration indication state indication receiving method according to an embodiment of the present application. As shown in FIG3 , the method includes:

301, receiving first information for indicating/activating a unified TCI state, the first information being a first MAC CE, the first MAC CE comprising at least one TCI codepoint, one TCI codepoint of the at least one TCI codepoint corresponding to one unified TCI state or two unified TCI states; wherein the latest spatial filter or QCL reference used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE;

302. Receive second information carried by PDCCH, where the second information is used to indicate one or two unified TCI states indicated/activated by the first information, and the second information includes a first TCI codepoint among the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.

It is worth noting that FIG. 3 above only schematically illustrates the embodiment of the present application, taking the terminal device as an example, but the present application is not limited thereto. For example, the execution order between the various operations can be appropriately adjusted, and other operations can be added or some operations can be reduced. In addition, the above operations can also be adjusted. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 3 above.

In some embodiments, the first MAC CE may be a MAC CE in Rel 18, for example, a MAC-CE for activating/deactivating a Unified TCI state. The first MAC CE includes at least one TCI codepoint, wherein one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states.

Among them, a unified TCI state or two unified TCI states corresponding to one TCI codepoint can be simply referred to as a unified TCI state corresponding to one TCI codepoint.

In some embodiments, a unified TCI state corresponding to a TCI codepoint is a first unified TCI state or a second unified TCI state, and two unified TCI states corresponding to a TCI codepoint are the first unified TCI state and the second unified TCI state.

Among them, the first unified TCI state can be a unified TCI state associated with one TRP, and the second unified TCI state can be a unified TCI state associated with another TRP. In other words, the UE uses the first unified TCI state to communicate with the first TRP, and the UE uses the second unified TCI state to communicate with the second TRP.

FIG4 is a schematic diagram of the association relationship of mTRP-related parameters in an embodiment of the present application. For mTRP, taking two TRPs as an example, the terminal device performs downlink/uplink transmission (DL/UL transmission) to the two TRPs, such as downlink data transmission (which can be replaced by "receiving PDSCH", receiving "DL-SCH", etc.), or downlink control information transmission (which can be replaced by "receiving PDCCH", receiving "DCI", etc.), or downlink reference signal transmission (which can be replaced by "CSI-RS", etc.); including uplink data transmission (which can be replaced by "sending PUSCH", sending "UL-SCH", etc.), or uplink control information transmission (which can be replaced by "sending PUCCH", etc.), or uplink reference signal transmission (which can be replaced by sending "SRS", etc.). FIG4 schematically illustrates this. Taking the reception of PDSCH as an example, Figure 4 illustrates the association between unified TCI state, downlink transmission, and TRP; for a TRP, it is associated with a unified TCI state and a downlink/uplink transmission; for example, as shown in Figure 4, the first unified TCI state corresponds to (is equivalent to) the first TRP; the second unified TCI state corresponds to (is equivalent to) the second TRP.

In some embodiments, the first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first joint unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second joint unified TCI state. unified TCI state.

In some embodiments, the first information is carried by the first MAC CE and may indicate at least one activated unified TCI state combination (i.e., unified TCI state corresponding to at least one TCI codepoint). Specifically, the unified TCI state corresponding to the TCI codepoint is at least one of the following:

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state;

The first is the unified TCI state for downlink, and the second is the unified TCI state for uplink;

First downlink unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state;

The second downstream unified TCI state, the second upstream unified TCI state;

The second downstream unified TCI state;

First uplink unified TCI state, second uplink unified TCI state;

First uplink unified TCI state;

The second upstream unified TCI state;

first unified TCI state, second unified TCI state;

first unified TCI state; or

The second unified TCI state.

In some embodiments, the spatial filter or QCL reference that the terminal device last (latest) used for sending or receiving before receiving the first information is not indicated/activated by the first MAC CE. For example, the spatial filter or QCL reference that the terminal device last (latest) used for sending or receiving before receiving the first information is not indicated/activated by the MAC-CE activated/deactivated by the Unified TCI state. For example, the spatial filter or QCL reference can be the spatial filter or QCL reference in the aforementioned first STRP transmission scenario or the second STRP transmission scenario. In other words, the scenario "the terminal device last (latest) used for sending or receiving before receiving the first information "The sent or received spatial filter or QCL reference is not indicated/activated by the first MAC CE" may include a first STRP transmission scenario or a second STRP transmission scenario. The present application is not limited to this, and it may also include other scenarios, for example, after random access initiated by RRC reconfiguration, using the TCI state in the traditional Rel-15/16.

For example, the end device may determine the spatial filter or QCL reference as follows:

The initial high-level parameter dl-OrJointTCI-StateList received by the terminal device is configured with two or more TCI-states. Before the configured TCI state takes effect, the synchronization signal/physical broadcast channel (SS/PBCH) of the initial random access phase is used as the QCL reference;

The initial high-layer parameter dl-OrJointTCI-StateList received by the terminal device is configured with two or more TCI-states, or the initial high-layer parameter ul-TCI-StateList received is configured with two or more TCI-UL-states, and before the configured TCI state takes effect (for example, before the configured TCI state is applied), a random access response (RAR, Random Access Response) of the initial random access phase is used as the spatial filter;

The terminal device configures two or more TCI-states in the high-level parameter dl-OrJointTCI-StateList received in the RRC (Radio Resource Management) reconfiguration with synchronization procedure, and before the configured TCI state takes effect, the synchronization signal/physical broadcast channel (SS/PBCH, Synchronization Signal/Physical Broadcast Channel) or CSI-RS (Channel State Information Reference Signal) resource of the random access phase initiated by the RRC reconfiguration is used as the QCL reference;

The terminal device configures two or more TCI-states in the high-level parameter dl-OrJointTCI-StateList received in the RRC reconfiguration with sync procedure, or configures two or more TCI-UL-states in the high-level parameter ul-TCI-StateList received, and before the configured TCI state takes effect, the RAR of the random access phase initiated by the RRC reconfiguration is used as the spatial filter;

The terminal device uses the TCI state configured by tci-StatesToAddModList as the QCL reference;

The terminal device uses the unified TCI state indicated/activated by the third information as the spatial filter or the QCL reference, the third information is the second MAC CE, the second MAC CE indicates/activates the unified TCI state corresponding to at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponds to only one unified TCI state, and the one unified TCI state is a A downlink unified TCI state, or an uplink unified TCI state, or a combined unified TCI state, or a downlink unified TCI state and an uplink unified TCI state.

Among them, the second MAC CE can be the MAC CE used to indicate/activate the unified TCI state in the STRP scenario, for example, the MAC CE in Rel 17.

In some embodiments, as shown in FIG3 , the method of the embodiment of the present application may further include:

303. Before receiving the first information, receive multiple transmission and reception point (MTRP) configuration information from a network device.

The MTRP configuration information may be an RRC parameter configured for mTRP transmission (or an RRC parameter configured with mTRP transmission). For example, the MTRP configuration information may include at least one of the following:

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first frequency division multiplexing scheme ('fdmSchemeA'),

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the second frequency division multiplexing scheme ('fdmSchemeB');

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first time division multiplexing scheme ('tdmSchemeA');

The repetition number (repetitionNumber) in the RRC parameter physical downlink shared channel time domain resource allocation (PDSCH-TimeDomainResourceAllocation) is configured;

The RRC parameter single frequency network scheme physical downlink control channel (sfnSchemePDCCH) is configured;

The RRC parameter single frequency network scheme physical downlink shared channel (sfnSchemePDSCH) is configured;

Two search spaces (SearchSpace) on a partial bandwidth (BWP) are associated with the same search space linking identifier (SearchSpaceLinkingId);

The mapping pattern (mappingPattern) is configured in the RRC parameter physical uplink control channel configuration (PUCCH-Config);

Two sounding reference signal resource sets (SRS) are configured in the first sounding reference signal resource set added modification list (srs-ResourceSetToAddModList) or the second sounding reference signal resource set added modification list (srs-ResourceSetToAddModListDCI-0-2) of the RRC parameter sounding reference signal configuration (SRS-Config). Resource set).

In some embodiments, the second information is carried by DCI in a physical downlink control channel (PDCCH) to indicate one or two unified TCI states indicated/activated by the first information, that is, to indicate a unified TCI state combination in at least one activated unified TCI state combination indicated by the first information.

A second information includes a TCI codepoint in at least one TCI codepoint in the first MAC CE (first information), and the TCI codepoint in the second information is called a first TCI codepoint. The first TCI codepoint corresponds to one or two unified TCI states. The meaning of one or two unified TCI states can be found in the introduction of the previous part, and will not be repeated here.

In some embodiments, the method of the embodiment of the present application may further include determining to use a first unified TCI state and/or a second unified TCI state based on the received first information and/or second information. The following is an exemplary description of a specific method for determining to use the first unified TCI state and/or the second unified TCI state.

Scenario 1:

Before receiving the second information, the terminal device uses the spatial filter, or the QCL reference, or the first unified TCI state, or the second unified TCI state to receive or send:

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL; and/or

The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL; and/or

The unified TCI state indicated by the second information includes only the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL.

The second information may be the nth second information received during the validity period of the first information (first MAC CE), where n is greater than or equal to 1.

The following is an exemplary description of Scheme 1.

In a certain transmission direction, the UE enters the MTRP transmission scenario only when the TCI field of the DCI received by the UE indicates both the first unified TCI state and the second unified TCI state. Before that, only the first unified TCI state or only the second unified TCI state indicated in the DCI received is used to update/replace the TCI state corresponding to the STRP transmission. For example:

The UE enters the downlink MTRP transmission scenario only when the TCI field of the DCI received by the UE indicates both the first downlink/unified TCI state and the second downlink/unified TCI state. Prior to this, only the first downlink unified TCI state or only the second downlink unified TCI state indicated in the DCI received is used to update/replace the TCI state corresponding to the STRP transmission.

The uplink MTRP transmission scenario begins only when the TCI field of the DCI received by the UE indicates both the first uplink/unified TCI state and the second uplink/unified TCI state. Prior to this, only the first uplink unified TCI state or only the second uplink unified TCI state indicated in the received DCI is used to update/replace the TCI state corresponding to the STRP transmission.

Example 1-1

In some implementations, the UE currently operates in a STRP transmission scenario, and the specific meaning of “operating in a STRP transmission scenario” includes but is not limited to:

(1.a) The UE has completed initial random access, the Unified TCI States Activation/Deactivation MAC CE has not yet taken effect, and the default downlink QCL reference and default spatial filter are being used; or

(1.b) The UE is operating in the Rel-17 STRP transmission scenario, and the joint/DL TCI state is being used as the downlink QCL reference, and the joint/UL TCI state is being used as the spatial filter.

The default downlink QCL reference and the default spatial filter described in (1.a), and the downlink QCL reference and the spatial filter described in (1.b) are spatial filters or quasi-co-site references that are not indicated/activated by the first MAC CE. The description here applies to (1.a) and (1.b) described later.

After that, the UE receives the RRC parameters configured for MTRP transmission, and the activated unified TCI state in the received Unified TCI States Activation/Deactivation MAC CE contains both the first unified TCI state and the second unified TCI state. For example, the activated unified TCI state is as follows:

The first downstream unified TCI state is activated corresponding to TCI codepoint 0;

The first downlink unified TCI state and the second downlink unified TCI state are activated corresponding to TCI codepoint 1, that is, TCI state combination (4);

The first uplink unified TCI state and the second uplink unified TCI state are activated corresponding to TCI codepoint 2;

The corresponding TCI codepoint 3 activates the first downstream unified TCI state, the second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state.

Corresponding to TCI codepoint 4 activates the second upstream unified TCI state

Corresponding to TCI codepoint 5 activates the first downstream unified TCI state

Corresponding to TCI codepoint 6 activates the second upstream unified TCI state

Corresponding to other TCI codepoints, any combination of TCI states is activated

The above MAC-CE activation of unified TCI state is summarized in the following table:

Table 1 Example of TCI states activated in a Unified TCI States Activation/Deactivation MAC CE 1

Table 1 is only an example. There is no binding between different TCI codepoint numbers and unified TCI state combinations.

During the period when the above MAC-CE is effective:

At time 1, if the TCI field in the DCI received by the UE indicates TCI codepoint 0, the existing or default downlink QCL reference is replaced/updated with the indicated first downlink unified TCI state, and the UE is still in the STRP transmission scenario for both downlink and uplink transmissions;

(Optional step) At time 1a, the TCI field in the DCI received by the UE indicates TCI codepoint 5, and the downlink unified TCI state currently in use is replaced with the indicated first downlink unified TCI state. The UE is still in the STRP transmission scenario for both downlink and uplink transmission.

At time 2, the TCI field in the DCI received by the UE indicates TCI codepoint 4, and the default spatial filter is replaced by the indicated second uplink unified TCI state. The UE is still in the STRP transmission scenario for downlink and uplink transmission.

(Optional step) At time 2a, the TCI field in the DCI received by the UE indicates TCI codepoint 6, and the existing uplink unified TCI state is replaced by the indicated second downlink unified TCI state, that is, the UE is still in the STRP transmission scenario for both downlink and uplink transmission;

At time 3, the TCI field in the DCI received by the UE indicates TCI codepoint 1, and the downlink direction uses both the first downlink unified TCI state and the second downlink unified TCI state, that is, the downlink transmission works in the MTRP transmission scenario (the uplink transmission is still in the STRP transmission scenario);

At time 4, the TCI field in the DCI received by the UE indicates TCI codepoint 2, then the uplink transmission uses the indicated first uplink unified TCI state and the second uplink unified TCI state simultaneously to replace the currently used unified TCI state, that is, the uplink transmission works in the MTRP transmission scenario (the downlink transmission also works in the MTRP transmission scenario);

At subsequent moments, the corresponding unified TCI state is updated according to the MTRP transmission scenario. The specific method of updating the corresponding unified TCI state in the MTRP transmission scenario is described later.

Example 1-2

In some embodiments, the conditions are the same as those in Example 1-1:

At time 1, the TCI field in the DCI received by the UE indicates TCI codepoint 1, then the downlink direction uses both the indicated first downlink unified TCI state and the second downlink unified TCI state to replace the currently used default QCL reference, that is, the downlink transmission works in the MTRP transmission scenario (the uplink transmission works in the STRP transmission scenario);

(Optional step) At time 1a, if the TCI field in the DCI received by the UE indicates TCI codepoint 4 or TCI codepoint 6, the indicated second downlink unified TCI state replaces the existing or default spatial filter, that is, the downlink transmission works in the MTRP transmission scenario (the uplink transmission still works in the STRP transmission scenario);

At time 2, the TCI field in the DCI received by the UE indicates unified TCI codepoint 2 or unified TCI codepoint 3, the uplink transmission uses the first uplink unified TCI state and the second uplink unified TCI state to replace the currently used uplink unified TCI state, that is, the uplink transmission works in the MTRP transmission scenario (if TCI codepoint 3 is indicated, the indicated two downlink unified TCI states must also be used to replace/update the currently existing downlink unified TCI state) (downlink transmission also works in the MTRP transmission scenario);

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Examples 1-3

In some embodiments, the conditions are the same as those in Example 1-1:

At time 1, the TCI field in the DCI received by the UE indicates TCI codepoint 3. The downlink transmission uses the first downlink unified TCI state and the second downlink unified TCI state at the same time to replace the currently used default downlink QCL reference. The uplink transmission uses the first uplink unified TCI state and the second uplink unified TCI state at the same time to replace the currently used default spatial filter. That is, both downlink and uplink transmissions work in the MTRP transmission scenario.

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Examples 1-4

In some implementations, the UE currently operates in a STRP transmission scenario, and the specific meaning of “operating in a STRP transmission scenario” includes but is not limited to:

(1.a) The UE has completed initial random access, the Unified TCI States Activation/Deactivation MAC CE has not yet taken effect, and the default downlink QCL reference and the default uplink spatial filter are being used; or

(1.b) The UE is operating in the Rel-17 STRP transmission scenario, and the joint/DL TCI state is being used as the downlink QCL reference, and the joint/UL TCI state is being used as the uplink spatial filter.

After that, the UE receives the RRC parameters configured for MTRP transmission, and the activated unified TCI state in the received Unified TCI States Activation/Deactivation MAC CE contains both the first unified TCI state and the second unified TCI state. For example, the activated unified TCI state is as follows:

The first unified TCI state is activated corresponding to TCI codepoint 0;

The second unified TCI stat is activated corresponding to TCI codepoint 1;

The first unified TCI state and the second unified TCI state are activated corresponding to TCI codepoint 2;

The first unified TCI state is activated corresponding to TCI codepoint 3;

The second unified TCI state is activated corresponding to TCI codepoint 4;

Corresponding to other TCI codepoints, any combination of unified TCI states is activated.

The above MAC-CE activation of unified TCI state is summarized in the following table:

Table 2 Example 2 of TCI states activated in a Unified TCI States Activation/Deactivation MAC CE

During the period when the above MAC-CE is effective:

At time 1, if the TCI field in the DCI received by the UE indicates TCI codepoint 0, the first unified TCI state is used to replace the currently used or default downlink QCL reference and uplink spatial filter, and the UE is still in the STRP transmission scenario for downlink and uplink transmission;

(Optional step) At time 1a, if the TCI field in the DCI received by the UE indicates TCI codepoint 1 or TCI codepoint 3 or TCI codepoint 4, the currently used unified TCI state is replaced with the indicated first unified TCI state or second unified TCI state, and the UE is still in the STRP transmission scenario for downlink and uplink transmission;

At time 2, the TCI field in the DCI received by the UE indicates TCI codepoint 2, so the first unified TCI state and the second unified TCI state are used at the same time, that is, both downlink transmission and uplink transmission work in the MTRP transmission scenario;

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Examples 1-5

In some embodiments, the same conditions as in Examples 1-4:

During the period when the above MAC-CE is effective:

At time 1, the TCI field in the DCI received by the UE indicates TCI codepoint 1, and the second unified TCI state is used to replace the currently used downlink QCL reference and uplink spatial filter (the currently used QCL reference or spatial filter may be the default QCL reference or default spatial filter, or the unified TCI state currently used in the Rel-17 STRP transmission scenario), and the UE is still in the STRP transmission scenario for downlink and uplink transmission;

(Optional step) At time 1a, if the TCI field in the DCI received by the UE indicates TCI codepoint 0, TCI codepoint 3, or TCI codepoint 4, the currently used unified TCI state is replaced with the indicated first unified TCI state or second unified TCI state, and the UE is still in the STRP transmission scenario for downlink and uplink transmission;

At time 2, the TCI field in the DCI received by the UE indicates TCI codepoint 2, and the first unified TCI state and the second unified TCI state are used simultaneously to replace the currently used unified TCI state, that is, both downlink transmission and uplink transmission work in the MTRP transmission scenario;

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Examples 1-6

In some embodiments, the same conditions as in Examples 1-4:

During the period when the above MAC-CE is effective:

At time 1, if the TCI field in the DCI received by the UE indicates TCI codepoint 2, the first unified TCI state and the second unified TCI state are used simultaneously to replace the currently used QCL reference or spatial filter, that is, both downlink transmission and uplink transmission work in the MTRP transmission scenario;

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Scenario 2:

Before receiving the second information, the terminal device uses the spatial filter or the QCL reference to receive or send:

The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the spatial filter or the QCL reference; and/or

The unified TCI state indicated by the second information only includes the second unified TCI state, using A second unified TCI state in the unified TCI state indicated by the second information replaces the spatial filter or the QCL reference; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the spatial filter or the QCL reference;

and/or,

Before receiving the second information, the terminal device uses the first unified TCI stat to receive or send:

The unified TCI state indicated by the second information only includes the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used instead of the first unified TCI state used; and/or

The unified TCI state indicated by the second information only includes the second unified TCI state, the first unified TCI state continues to be used and the second unified TCI state in the unified TCI state indicated by the second information is also used; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state;

and/or

Before receiving the second information, the terminal device uses the second unified TCI stat to receive or send:

The unified TCI state indicated by the second information only includes the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used instead of the second unified TCI state used; and/or

The unified TCI state indicated by the second information includes only the first unified TCI state, the second unified TCI state continues to be used and the first unified TCI state in the unified TCI state indicated by the second information is also used; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used instead of the second unified TCI state.

The second information may be the nth second information received during the validity period of the first information (first MAC CE), where n is greater than or equal to 1.

The following is an exemplary description of Scheme 2.

In a certain transmission direction, if the union of the unified TCI states indicated by the TCI field of the DCI received by the UE once or multiple times includes the first unified TCI state or the second unified TCI state, the UE enters the MTRP transmission scenario in this transmission direction.

Example 2-1

In some implementations, the UE currently operates in a STRP transmission scenario, and the specific meaning of “operating in a STRP transmission scenario” includes but is not limited to:

(1.a) The UE has completed initial random access, the Unified TCI States Activation/Deactivation MAC CE has not yet taken effect, and the default downlink QCL reference and the default uplink spatial filter are being used; or

(1.b) The UE is operating in the Rel-17 STRP transmission scenario, and the joint/DL TCI state is being used as the downlink QCL reference, and the joint/UL TCI state is being used as the uplink spatial filter.

After that, the UE receives the RRC parameters configured for MTRP transmission, and the union of the activated unified TCI states in the received Unified TCI States Activation/Deactivation MAC CE includes the first unified TCI state and the second unified TCI state.

For example, the Unified TCI States Activation/Deactivation MAC CE example shown in Table 3:

During the MAC-CE validity period:

At time 1, if the TCI field in the DCI received by the UE indicates TCI codepoint 0, the first downlink unified TCI state is used to replace the existing or default downlink QCL reference, and the UE is still in the STRP transmission scenario for both downlink and uplink transmission;

(Optional step) If the TCI field in the DCI received by the UE indicates TCI codepoint 7, the indicated first downlink unified TCI state is used to replace/update the existing downlink unified TCI state, and the UE is still in the STRP transmission scenario for both downlink and uplink transmission;

At time 2, the TCI field in the DCI received by the UE indicates TCI codepoint 5, so the second downlink unified TCI state indicated this time is used (applied), and the existing first downlink unified TCI state remains unchanged, and the downlink transmission enters the MTRP transmission scenario (the uplink transmission is still in the STRP transmission scenario);

At time 3, the TCI field in the DCI received by the UE indicates TCI codepoint 4, and the indicated second uplink unified TCI state is used to replace the existing or default uplink spatial filter, that is, the uplink transmission is still STRP transmission scenario (downlink transmission enters MTRP transmission scenario);

At time 3a, if the TCI field in the DCI received by the UE indicates TCI codepoint 6, the first uplink unified TCI state indicated this time is used, and the existing second uplink unified TCI state remains unchanged, that is, the uplink transmission enters the MTRP transmission scenario (the downlink transmission is also the MTRP transmission scenario);

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Table 3 An example of TCI states activated in a Unified TCI States Activation/Deactivation MAC CE

Example 2-2

In some embodiments, the conditions are the same as those in Example 1-1:

During the MAC-CE validity period shown in Table 1:

At time 1, if the TCI field in the DCI received by the UE indicates TCI codepoint 0, the first downlink unified TCI state is used to replace the existing or default downlink QCL reference, and the UE is still in the STRP transmission scenario for both downlink and uplink transmission;

(Optional step) At time 1a, the TCI field in the DCI received by the UE indicates TCI codepoint 5, and the downlink unified TCI state currently in use is replaced with the indicated first downlink unified TCI state. The UE is still in the STRP transmission scenario for both downlink and uplink transmission.

At time 2, the TCI field in the DCI received by the UE indicates TCI codepoint 1, and the The first downlink unified TCI state and the second downlink unified TCI state are shown, and the UE enters the MTRP scenario in downlink transmission.

For uplink transmission, similar to the downlink transmission situation, as long as the unified TCI state indicated once or multiple times can cover the first uplink unified TCI state and the second downlink unified TCI state, the uplink transmission enters the MTRP scenario.

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Example 2-3

In some embodiments, the conditions are the same as those in Example 2-1:

At time 1, the TCI field in the DCI received by the UE indicates TCI codepoint 3. The downlink transmission uses both the first downlink unified TCI state and the second downlink unified TCI state, and the uplink transmission uses both the first uplink unified TCI state and the second uplink unified TCI state. That is, both downlink and uplink transmissions work in the MTRP transmission scenario.

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Embodiment 2-4

In some embodiments, the same conditions as in Examples 1-4:

During the MAC-CE validity period shown in Table 2:

At time 1, if the TCI field in the DCI received by the UE indicates TCI codepoint 0, the first unified TCI state is used to replace the existing or default downlink QCL reference and uplink spatial filter, and the UE is still in the STRP transmission scenario for downlink and uplink transmission;

(Optional step) At time 1a, if the TCI field in the DCI received by the UE indicates TCI codepoint 3, the existing unified TCI state is replaced/updated with the indicated first unified TCI state, and the UE is still in the STRP transmission scenario for downlink and uplink transmission;

At time 2, if the TCI field in the DCI received by the UE indicates TCI codepoint 1 or TCI codepoint 4, the indicated second unified TCI state and the previously existing first unified TCI state are used, and the UE is in the MTRP transmission scenario for both downlink and uplink transmissions; or, at time 2, if the TCI field in the DCI received by the UE indicates TCI codepoint 2, the indicated first unified TCI state and the second unified TCI state are used at the same time, and the UE is in the MTRP transmission scenario for both downlink and uplink transmissions.

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Embodiment 2-5

In some embodiments, the same conditions as in Examples 1-4:

During the period when the above MAC-CE is effective:

At time 1, if the TCI field in the DCI received by the UE indicates TCI codepoint 2, the first unified TCI state and the second unified TCI state are used at the same time, that is, both downlink transmission and uplink transmission work in the MTRP transmission scenario;

At subsequent times, the corresponding unified TCI state is updated according to the MTRP transmission scenario.

Scenario 3:

There is at least one second TCI codepoint in at least one TCI codepoint of the first information, wherein one second TCI codepoint corresponds to a first unified TCI state and a second unified TCI state, and before the unified TCI state indicated by the second information takes effect (i.e., before the unified TCI state indicated by the second information is applied), the first unified TCI state and the second unified TCI state corresponding to the second TCI codepoint are used.

In some embodiments, the number of the second TCI codepoint is more than one, and the first unified TCI state and the second unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used.

In some embodiments, it may be determined whether there is a second TCI codepoint corresponding to two unified TCI states in the uplink transmission direction or the downlink transmission direction. That is, in the uplink direction, the second TCI codepoint corresponds to the first and second uplink unified TCI states, and the second TCI codepoint may or may not correspond to the unified TCI state in the downlink direction. Similarly, in the downlink direction, the second TCI codepoint corresponds to the first and second downlink unified TCI states, and the second TCI codepoint may or may not correspond to the unified TCI state in the uplink direction.

For example, in the uplink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first uplink unified TCI state and a second uplink unified TCI state, and the first uplink unified TCI state and the second uplink unified TCI state are used; and/or,

In the downlink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first downlink unified TCI state and a second downlink unified TCI state, and the first downlink unified TCI state and the second downlink unified TCI state are used.

In some embodiments, in the uplink transmission direction, the number of the second TCI codepoint is greater than 1 using the first uplink unified TCI state and the second uplink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the plurality of the second TCI codepoints; and/or,

In the downlink transmission direction, the number of the second TCI codepoint is more than one, and the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used.

In some embodiments, it can be determined whether there is a second TCI codepoint corresponding to two unified TCI states in the uplink and downlink transmission directions, that is, the second TCI codepoint corresponds to two unified TCI states in both the uplink and downlink directions.

For example, in the uplink and downlink transmission directions, the unified TCI state corresponding to the second TCI codepoint includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state are used; and/or

In the uplink transmission direction and the downlink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first uplink unified TCI state, a second uplink unified TCI state, a first downlink unified TCI state and a second downlink unified TCI state; in the uplink transmission direction, the first uplink unified TCI state and the second uplink unified TCI state in the unified TCI state corresponding to the second TCI codepoint are used, and, in the downlink transmission direction, the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the second TCI codepoint are used.

In some embodiments, in the uplink transmission direction and the downlink transmission direction, the number of the second TCI codepoint is more than one, and the first unified TCI state and the second unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among multiple second TCI codepoints are used.

When the number of the second TCI codepoint is more than one, the first uplink unified TCI state, the second uplink unified TCI state, the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used.

In some embodiments, after receiving the multi-TRP configuration information, a second TCI codepoint exists in at least one TCI codepoint included in the first information received for the first time, and the second TCI codepoint corresponds to two unified TCI states. The present application is not limited to this, and a second TCI codepoint may also exist in at least one TCI codepoint included in the first information received for the nth time, where n is greater than 1.

The following is an exemplary description of Scheme 3.

In a certain transmission direction, if the first unified TCI state and the second unified TCI state are activated at the same time on at least one codepoint corresponding to the unified TCI activation/deactivation MAC-CE command, the MTRP transmission scenario is entered; and before the unified TCI state indicated by the TCI field of the DCI takes effect, the default QCL reference or spatial filter in the MTRP transmission is determined as follows:

(1) For downlink transmission, among the unified TCI state groups with two activated downlink unified TCI states, select the group with the lowest corresponding TCI codepoint number, and use its activated first downlink/unified TCI state and second downlink/unified TCI state as the QCL reference for the downlink MTRP transmission scenario;

(2) For uplink transmission, among the unified TCI state groups with two activated uplink unified TCI states, select the group with the lowest number of corresponding TCI codepoints, and use its activated first uplink/joint unified TCI state and second uplink/joint unified TCI state as spatial filters for the uplink MTRP transmission scenario.

Example 3-1

In some implementations, the UE currently operates in a STRP transmission scenario, and the specific meaning of “operating in a STRP transmission scenario” includes but is not limited to:

(1.a) The UE has completed initial random access, the Unified TCI States Activation/Deactivation MAC CE has not yet taken effect, and the default downlink QCL reference and the default uplink spatial filter are being used; or

(1.b) The UE is operating in the Rel-17 STRP transmission scenario, and the joint/DL TCI state is being used as the downlink QCL reference, and the joint/UL TCI state is being used as the uplink spatial filter.

After that, if the UE receives the RRC parameters configured for MTRP transmission, and the received Unified TCI States Activation/Deactivation MAC CE contains both the first unified TCI state and the second unified TCI state for at least one corresponding TCI codepoint, the UE enters the MTRP transmission scenario in the corresponding transmission direction.

For example, in the case of MAC-CE activating unified TCI state as shown in Table 1, the first unified TCI state and the second unified TCI state are activated simultaneously on TCI codepoint 1, TCI codepoint 2, and TCI codepoint 3, and the MTRP transmission scenario can be entered.

Two downlink unified TCI states are activated on the corresponding TCI codepoint 1, and the UE can enter the MTRP transmission scenario in the downlink transmission direction; and before the unified TCI state indicated by the TCI field of the DCI takes effect, the first downlink unified TCI state and the second downlink unified TCI state activated on TCI codepoint 1 are used as the QCL reference for the downlink MTRP transmission scenario.

Corresponding to two uplink unified TCI states activated on TCI codepoint 2, the UE can enter the MTRP transmission scenario in the uplink transmission direction; and before the unified TCI state indicated by the TCI field of DCI takes effect, the first uplink unified TCI state and the second uplink unified TCI state activated on TCI codepoint 2 are used as spatial filters for the uplink MTRP transmission scenario.

Example 3-2

In some implementations, the UE currently operates in a STRP transmission scenario, that is:

(1.a) The UE has completed initial random access, the Unified TCI States Activation/Deactivation MAC CE has not yet taken effect, and the default downlink QCL reference and the default uplink spatial filter are being used; or

(1.b) The UE is operating in the Rel-17 STRP transmission scenario, and the joint/DL TCI state is being used as the downlink QCL reference, and the joint/UL TCI state is being used as the uplink spatial filter.

After that, if the UE receives the RRC parameters configured for MTRP transmission, and the received Unified TCI States Activation/Deactivation MAC CE contains both the first unified TCI state and the second unified TCI state for at least one corresponding TCI codepoint, the UE enters the MTRP transmission scenario in the corresponding transmission direction.

For example, in the case of MAC-CE activating unified TCI state as shown in Table 4, the first unified TCI state and the second unified TCI state are activated at the same time on TCI codepoint 1, TCI codepoint 2, and TCI codepoint 3, and the MTRP transmission scenario can be entered, and

(1) Two downlink unified TCI states and two uplink unified TCI states are activated on TCI codepoint 1. The UE can enter the MTRP transmission scenario in both downlink and uplink transmission directions. Before the unified TCI state indicated by the TCI field of the DCI takes effect, the four unified TCI states activated on TCI codepoint 1 are used as the QCL reference for the downlink MTRP transmission scenario.

Table 4 Example 3 of TCI states activated in a Unified TCI States Activation/Deactivation MAC CE

Example 3-3

The same conditions as those in Example 3-3, for example, in the case where MAC-CE activates unified TCI state as shown in Table 5, the first unified TCI state and the second unified TCI state are activated simultaneously on the corresponding TCI codepoint 2 and the corresponding TCI codepoint 5, and the MTRP transmission scenario can be entered, and

(1) Before the unified TCI state indicated by the TCI field of the DCI takes effect, the two joint unified TCI states activated on TCI codepoint 2 are used as the QCL reference or spatial filter for the downlink and uplink MTRP transmission scenarios.

Table 5 Example 2 of TCI states activated in a Unified TCI States Activation/Deactivation MAC CE

Embodiment 3-4

If a complete set of four {first downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state} are activated on at least one TCI codepoint, before the unified TCI state indicated by the TCI field of the DCI takes effect, the complete set of {first downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state} activated on the TCI codepoint with the lowest number of the TCI codepoint is used as the QCL reference or spatial filter for the MTRP transmission scenario.

In some implementations, the UE currently operates in a STRP transmission scenario, that is:

(1.a) The UE has completed initial random access, the Unified TCI States Activation/Deactivation MAC CE has not yet taken effect, and the default downlink QCL reference and the default uplink spatial filter are being used; or

(1.b) The UE is operating in the Rel-17 STRP transmission scenario, and the joint/DL TCI state is being used as the downlink QCL reference, and the joint/UL TCI state is being used as the uplink spatial filter.

After that, the UE receives the RRC parameters configured for MTRP transmission, and in the received Unified TCI States Activation/Deactivation MAC CE, its unified TCI state activation status is shown in Table 6.

(1) Confirm to enter the MTRP transmission scenario

In Table 6, if the unified TCI state activated corresponding to TCI codepoint 0 or TCI codepoint 2 or TCI codepoint 5 includes two downlink unified TCI states, the UE can enter the MTRP transmission scenario in downlink transmission. If the unified TCI state activated corresponding to TCI codepoint 1 or TCI codepoint 2 or TCI codepoint 3 or TCI codepoint 5 includes two uplink unified TCI states, the UE can enter the MTRP transmission scenario in uplink transmission.

(2) Determine the default QCL reference or spatial filter after entering the MTRP transmission scenario

Although two downlink unified TCI states are activated on TCI codepoint 0 and two uplink unified TCI states are activated on TCI codepoint 1, a full four {first downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state} are activated on TCI codepoint 2 and TCI codepoint 5. Before the unified TCI state indicated by the TCI field of DCI takes effect, the four unified TCI states activated on TCI codepoint 2 are used as the default QCL reference or spatial filter after the MTRP transmission scenario.

Table 6 An example of TCI states activated in a Unified TCI States Activation/Deactivation MAC CE

Embodiment 3-5

In some embodiments, it is possible to force the first MAC-CE activation command to indicate that at least one corresponding TCI codepoint has activated a full set of four {first downlink unified TCI state, second downlink unified TCI state}. state, first uplink unified TCI state, second uplink unified TCI state} and before the unified TCI state indicated by the TCI field of the DCI takes effect, the full set of {first downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state} activated on the TCI codepoint with the lowest TCI codepoint number is used as the QCL reference or spatial filter for the MTRP transmission scenario.

The following is an example of how to update the unified TCI state in the MTRP transmission scenario.

In the unified TCI framework, if the UE works in the MTRP transmission scenario, and the UE has applied the first downlink unified TCI state, the first uplink unified TCI state, the second downlink unified TCI state, and the second uplink unified TCI state, or has applied the first joint unified TCI state and the second joint unified TCI state (the 4 links from the UE to the 2 TRPs have corresponding TCI states):

When the TCI field of DCI format 1_1/1_2 indicates the full set of {first downlink unified TCI state, first uplink unified TCI state, second downlink unified TCI state, second uplink unified TCI state} or {first joint unified TCI state, second joint unified TCI state}, the unified TCI state corresponding to each link will be updated with this set of indicated unified TCI states;

When the TCI field of DCI format 1_1/1_2 indicates a non-empty subset of {first downlink unified TCI state, first uplink unified TCI state, second downlink unified TCI state, second uplink unified TCI state}, or a non-empty subset of {first joint unified TCI state, second joint unified TCI state}, only the unified TCI state contained in the subset is used to update the unified TCI state of the corresponding link, and the unified TCI state not in the subset remains unchanged.

The above embodiments are merely exemplary of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It can be seen from the above embodiment that the terminal device receives first information for indicating/activating a unified TCI state, and the first information is a first media access control element (MAC CE), and the first MAC CE includes at least one transmission configuration indication code point (TCI codepoint), and one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein, the terminal device, before receiving the first information, the last (latest) spatial filter or quasi-co-site (QCL) reference used for sending or receiving is not indicated/activated by the first MAC CE; the terminal device also receives a physical downlink control channel. The second information carried by the PDCCH is used to indicate one or two unified TCI states in the unified TCI state indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states. Thus, the terminal device can clearly determine the unified TCI state to be used according to the first information and the second information, thereby effectively improving the reliability of transmission.

Embodiments of the second aspect

The embodiment of the present application provides a unified transmission configuration indication state indication method, which is applied to the network device side. The embodiment of the present application can be combined with the embodiment of the first aspect, or can be implemented separately. The same content as the embodiment of the first aspect is not repeated.

FIG. 5 is a schematic diagram of a unified transmission configuration indication state indication method according to an embodiment of the present application. As shown in FIG. 5 , the method includes:

501, sending first information for indicating/activating a unified TCI state to a terminal device, where the first information is a first MAC CE, where the first MAC CE includes at least one TCI codepoint, and one TCI codepoint of the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the latest spatial filter or QCL reference used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE;

502. Send second information carried by PDCCH to the terminal device, where the second information is used to indicate one or two unified TCI states indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.

In some embodiments, the one unified TCI state is a first unified TCI state or a second unified TCI state, and the two unified TCI states are a first unified TCI state and a second unified TCI state; the first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first combined unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second combined unified TCI state.

In some embodiments, as shown in FIG5 , the method further includes:

503, before sending the first information, the network device sends multiple TRP configuration information. TRP configuration information includes at least one of the following:

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first frequency division multiplexing scheme ('fdmSchemeA'),

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the second frequency division multiplexing scheme ('fdmSchemeB');

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first time division multiplexing scheme ('tdmSchemeA');

The repetition number (repetitionNumber) in the RRC parameter physical downlink shared channel time domain resource allocation (PDSCH-TimeDomainResourceAllocation) is configured;

The RRC parameter single frequency network scheme physical downlink control channel (sfnSchemePDCCH) is configured;

The RRC parameter single frequency network scheme physical downlink shared channel (sfnSchemePDSCH) is configured;

Two search spaces (SearchSpace) on a partial bandwidth (BWP) are associated with the same search space linking identifier (SearchSpaceLinkingId);

The mapping pattern (mappingPattern) is configured in the RRC parameter physical uplink control channel configuration (PUCCH-Config);

Two sounding reference signal resource sets (SRS Resource set) are configured in the first sounding reference signal resource set new modification list (srs-ResourceSetToAddModList) or the second sounding reference signal resource set new modification list (srs-ResourceSetToAddModListDCI-0-2) of the RRC parameter sounding reference signal configuration (SRS-Config).

In some embodiments, the unified TCI state corresponding to the TCI codepoint is at least one of the following:

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state;

first downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state;

The first is the unified TCI state for downlink, and the second is the unified TCI state for uplink;

First downlink unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state;

The second downstream unified TCI state, the second upstream unified TCI state;

The second downstream unified TCI state;

First uplink unified TCI state, second uplink unified TCI state;

First uplink unified TCI state;

The second upstream unified TCI state;

First unified TCI state, second unified TCI state;

first unified TCI state; or

The second unified TCI state.

It is worth noting that the above FIG. 5 is only a schematic illustration of the embodiment of the present application, but the present application is not limited thereto. For example, the execution order between the various operations can be appropriately adjusted, and other operations can be added or some operations can be reduced. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above FIG. 5.

The above embodiments are merely exemplary of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It can be seen from the above embodiment that the network device sends first information for indicating/activating a unified TCI state, the first information is a first media access control element (MAC CE), the first MAC CE includes at least one transmission configuration indication code point (TCI codepoint), and one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein, the spatial filter or quasi-co-location (QCL) reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE; the network device also sends second information carried by a physical downlink control channel (PDCCH), the second information is used to indicate one or two unified TCI states in the unified TCI state indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified Thus, the terminal device can clearly determine the unified TCI state to be used according to the first information and the second information, thereby effectively improving the reliability of transmission.

Embodiments of the third aspect

The embodiment of the present application provides a unified transmission configuration indication status indication receiving device. The device may be, for example, a terminal device, or may be one or more components or assemblies configured in the terminal device, and the same contents as those in the embodiment of the first aspect are not repeated here.

FIG6 is a schematic diagram of a unified transmission configuration indication status indication receiving device according to an embodiment of the present application. As shown in FIG6 , a unified transmission configuration indication status indication receiving device 600 includes:

A transceiver unit 601 receives first information for indicating/activating a unified TCI state, wherein the first information is a first media access control element (MAC CE), wherein the first MAC CE includes at least one transmission configuration indication code point (TCI codepoint), wherein one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the latest spatial filter or quasi co-location (QCL) reference used for sending or receiving by the transceiver unit 601 before receiving the first information is not indicated/activated by the first MAC CE;

The transceiver unit 601 receives second information carried by a physical downlink control channel (PDCCH), wherein the second information is used to indicate one or two unified TCI states indicated/activated by the first information, and the second information includes a first TCI codepoint among the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.

In some embodiments, the one unified TCI state is a first unified TCI state or a second unified TCI state, and the two unified TCI states are a first unified TCI state and a second unified TCI state;

The first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first combined unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second combined unified TCI state.

In some embodiments, the terminal device determines the spatial filter or QCL reference in the following manner:

The initial high-level parameter dl-OrJointTCI-StateList received by the terminal device is configured with two or more TCI-states. Before the configured TCI state takes effect, the synchronization signal/physical Broadcast channel (SS/PBCH, Synchronization Signal/Physical Broadcast Channel) is used as the QCL reference;

The initial high-level parameter dl-OrJointTCI-StateList received by the terminal device is configured with 2 or more TCI-states, or the initial high-level parameter ul-TCI-StateList received is configured with 2 or more TCI-UL-states, and before the configured TCI state takes effect, the random access response (RAR, Random Access Response) of the initial random access phase is used as the spatial filter;

The terminal device configures two or more TCI-states in the high-level parameter dl-OrJointTCI-StateList received in the RRC (Radio Resource Management) reconfiguration with synchronization procedure. Before the configured TCI state takes effect, the synchronization signal/physical broadcast channel (SS/PBCH, Synchronization Signal/Physical Broadcast Channel) or CSI-RS (Channel State Information Reference Signal) resource of the random access phase initiated by the RRC reconfiguration is used as the QCL reference;

The terminal device configures two or more TCI-states in the high-level parameter dl-OrJointTCI-StateList received in the RRC reconfiguration with sync procedure, or configures two or more TCI-UL-states in the high-level parameter ul-TCI-StateList received, and before the configured TCI state takes effect, the RAR of the random access phase initiated by the RRC reconfiguration is used as the spatial filter;

The terminal device uses the TCI state configured by tci-StatesToAddModList as the QCL reference;

The terminal device uses the unified TCI state indicated/activated by the third information as the spatial filter or the QCL reference, the third information is the second MAC CE, the second MAC CE indicates/activates the unified TCI state corresponding to at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponds to only one unified TCI state, the one unified TCI state is a downlink unified TCI state, or, an uplink unified TCI state, or, a combined unified TCI state, or, a downlink unified TCI state and an uplink unified TCI state.

In some embodiments, before receiving the first information, the transceiver unit 601 receives multiple transmission and reception point (TRP) configuration information from a network device, and the multiple TRP configuration information includes at least one of the following:

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first frequency division multiplexing scheme ('fdmSchemeA'),

Frequency Division Multiplexing-Time Division Multiplexing in RRC parameter repetition scheme configuration (RepetitionSchemeConfig) The repetition scheme (repetitionScheme) in the multiplexing (fdm-TDM) is configured as a second frequency division multiplexing scheme ('fdmSchemeB');

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first time division multiplexing scheme ('tdmSchemeA');

The repetition number (repetitionNumber) in the RRC parameter physical downlink shared channel time domain resource allocation (PDSCH-TimeDomainResourceAllocation) is configured;

The RRC parameter single frequency network scheme physical downlink control channel (sfnSchemePDCCH) is configured;

The RRC parameter single frequency network scheme physical downlink shared channel (sfnSchemePDSCH) is configured;

Two search spaces (SearchSpace) on a partial bandwidth (BWP) are associated with the same search space linking identifier (SearchSpaceLinkingId);

The mapping pattern (mappingPattern) is configured in the RRC parameter physical uplink control channel configuration (PUCCH-Config);

Two sounding reference signal resource sets (SRS Resource set) are configured in the first sounding reference signal resource set new modification list (srs-ResourceSetToAddModList) or the second sounding reference signal resource set new modification list (srs-ResourceSetToAddModListDCI-0-2) of the RRC parameter sounding reference signal configuration (SRS-Config).

In some embodiments, before receiving the second information, the transceiver unit 601 uses the spatial filter, or the QCL reference, or the first unified TCI state, or the second unified TCI state to receive or send:

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL; and/or

The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL; and/or

The unified TCI state indicated by the second information only includes the second unified TCI state, using The second unified TCI state among the unified TCI states indicated by the second information replaces the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL.

In some embodiments, before receiving the second information, the transceiver unit 601 uses the spatial filter or the QCL reference to receive or send:

The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the spatial filter or the QCL reference; and/or

The unified TCI state indicated by the second information only includes the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used to replace the spatial filter or the QCL reference; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the spatial filter or the QCL reference;

and/or,

Before receiving the second information, the transceiver unit 601 uses the first unified TCI stat to receive or send:

The unified TCI state indicated by the second information only includes the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used instead of the first unified TCI state used; and/or

The unified TCI state indicated by the second information only includes the second unified TCI state, the first unified TCI state continues to be used and the second unified TCI state in the unified TCI state indicated by the second information is also used; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state;

and/or

Before receiving the second information, the transceiver unit 601 uses the second unified TCI stat to receive or send:

The unified TCI state indicated by the second information only includes the second unified TCI state, using A second unified TCI state in the unified TCI state indicated by the second information is used instead of a second unified TCI state; and/or

The unified TCI state indicated by the second information includes only the first unified TCI state, the second unified TCI state continues to be used and the first unified TCI state in the unified TCI state indicated by the second information is also used; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used instead of the second unified TCI state.

In some embodiments, at least one second TCI codepoint exists in at least one TCI codepoint of the first information, wherein one second TCI codepoint corresponds to a first unified TCI state and a second unified TCI state,

Before the unified TCI state indicated by the second information takes effect, the first unified TCI state and the second unified TCI state corresponding to the second TCI codepoint are used.

In some embodiments, the number of the second TCI codepoint is more than one, and the first unified TCI state and the second unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used.

In some embodiments, in the uplink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first uplink unified TCI state and a second uplink unified TCI state, and the first uplink unified TCI state and the second uplink unified TCI state are used; and/or,

In the downlink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first downlink unified TCI state and a second downlink unified TCI state, and the first downlink unified TCI state and the second downlink unified TCI state are used; and/or,

In the uplink and downlink transmission directions, the unified TCI state corresponding to the second TCI codepoint includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state are used.

In some embodiments, in the uplink transmission direction, the number of the second TCI codepoint is more than one, and the first uplink unified TCI state and the second uplink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among multiple second TCI codepoints are used; and/or,

In the downlink transmission direction, the number of the second TCI codepoint is more than one, and multiple of the second TCI codepoints are used. The first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint in the two TCI codepoints; and/or,

In the uplink transmission direction and the downlink transmission direction, the number of the second TCI codepoint is more than one, and the first unified TCI state and the second unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used.

In some embodiments, in the uplink transmission direction and the downlink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first uplink unified TCI state, a second uplink unified TCI state, a first downlink unified TCI state, and a second downlink unified TCI state;

In the uplink transmission direction, the first uplink unified TCI state and the second uplink unified TCI state in the unified TCI state corresponding to the second TCI codepoint are used, and in the downlink transmission direction, the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the second TCI codepoint are used.

In some embodiments, the number of the second TCI codepoint is more than one, and the first uplink unified TCI state, the second uplink unified TCI state, the first downlink unified TCI state, and the second downlink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among multiple second TCI codepoints are used.

In some embodiments, after receiving the multi-TRP configuration information, there is a second TCI codepoint in at least one TCI codepoint included in the first information received for the first time, and the second TCI codepoint corresponds to two unified TCI states.

In some embodiments, the unified TCI state corresponding to the TCI codepoint is at least one of the following:

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state;

The first is the unified TCI state for downlink, and the second is the unified TCI state for uplink;

First downlink unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state;

The second downstream unified TCI state, the second upstream unified TCI state;

The second downstream unified TCI state;

First uplink unified TCI state, second uplink unified TCI state;

First uplink unified TCI state;

The second upstream unified TCI state;

first unified TCI state, second unified TCI state;

first unified TCI state; or

The second unified TCI state.

The above embodiments are merely exemplary of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The unified transmission configuration indication status indication receiving device 600 may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

In addition, for the sake of simplicity, FIG. 6 only exemplifies the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

It can be seen from the above embodiment that the terminal device receives first information for indicating/activating a unified TCI state, the first information is a first media access control element (MAC CE), the first MAC CE includes at least one transmission configuration indication code point (TCI codepoint), and one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein, the terminal device last (latest) used for sending or receiving a spatial filter or quasi-co-location (QCL) reference before receiving the first information is not indicated/activated by the first MAC CE; the terminal device also receives second information carried by a physical downlink control channel (PDCCH), the second information is used to indicate one or two unified TCI states in the unified TCI state indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified Thus, the terminal device can clearly determine the unified TCI state to be used according to the first information and the second information, thereby effectively improving the reliability of transmission.

Embodiments of the fourth aspect

The embodiment of the present application provides a unified transmission configuration indication state indication device. The device may be, for example, a network device, or may be one or more components or assemblies configured in the network device, and the contents identical to those in the embodiment of the second aspect will not be repeated.

FIG7 is a schematic diagram of a unified transmission configuration indication state indication device according to an embodiment of the present application. As shown in FIG7 , a unified transmission configuration indication state indication device 700 includes:

A transceiver unit 701, which sends first information for indicating/activating a unified TCI state to a terminal device, wherein the first information is a first MAC CE, and the first MAC CE includes at least one TCI codepoint, and one TCI codepoint of the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or QCL reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE;

The transceiver unit 701 sends second information carried by PDCCH, where the second information is used to indicate one or two unified TCI states indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, where the first TCI codepoint corresponds to the one or two unified TCI states.

In some embodiments, the one unified TCI state is a first unified TCI state or a second unified TCI state, and the two unified TCI states are a first unified TCI state and a second unified TCI state;

The first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first combined unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second combined unified TCI state.

In some implementations, before sending the first information, the transceiver unit 701 sends multiple TRP configuration information, where the multiple TRP configuration information includes at least one of the following:

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first frequency division multiplexing scheme. Scheme('fdmSchemeA'),

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the second frequency division multiplexing scheme ('fdmSchemeB');

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first time division multiplexing scheme ('tdmSchemeA');

The repetition number (repetitionNumber) in the RRC parameter physical downlink shared channel time domain resource allocation (PDSCH-TimeDomainResourceAllocation) is configured;

The RRC parameter single frequency network scheme physical downlink control channel (sfnSchemePDCCH) is configured;

The RRC parameter single frequency network scheme physical downlink shared channel (sfnSchemePDSCH) is configured;

Two search spaces (SearchSpace) on a partial bandwidth (BWP) are associated with the same search space linking identifier (SearchSpaceLinkingId);

The mapping pattern (mappingPattern) is configured in the RRC parameter physical uplink control channel configuration (PUCCH-Config);

Two sounding reference signal resource sets (SRS Resource set) are configured in the first sounding reference signal resource set new modification list (srs-ResourceSetToAddModList) or the second sounding reference signal resource set new modification list (srs-ResourceSetToAddModListDCI-0-2) of the RRC parameter sounding reference signal configuration (SRS-Config).

In some embodiments, the unified TCI state corresponding to the TCI codepoint is at least one of the following:

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state;

The first is the unified TCI state for downlink, and the second is the unified TCI state for uplink;

First downlink unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state;

The second downstream unified TCI state, the second upstream unified TCI state;

The second downstream unified TCI state;

First uplink unified TCI state, second uplink unified TCI state;

First uplink unified TCI state;

The second upstream unified TCI state;

first unified TCI state, second unified TCI state;

first unified TCI state; or

The second unified TCI state.

The above embodiments are merely exemplary of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The unified transmission configuration indication state indication device 700 may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

In addition, for the sake of simplicity, FIG. 7 only exemplifies the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

It can be seen from the above embodiment that the network device sends first information for indicating/activating a unified TCI state, the first information is a first media access control element (MAC CE), the first MAC CE includes at least one transmission configuration indication code point (TCI codepoint), and one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein, the spatial filter or quasi-co-location (QCL) reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE; the network device also sends second information carried by a physical downlink control channel (PDCCH), the second information is used to indicate one or two unified TCI states in the unified TCI state indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified Thus, the terminal device can clearly determine the unified TCI state to be used according to the first information and the second information, thereby effectively improving the reliability of transmission.

Embodiments of the fifth aspect

An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those of the embodiments of the first to fourth aspects will not be repeated herein.

In some implementations, the communication system 100 may include at least: a network device and a terminal device, wherein:

A terminal device, which receives first information for indicating/activating a unified TCI state, wherein the first information is a first MAC CE, wherein the first MAC CE includes at least one TCI codepoint, wherein one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or QCL reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE; and further receives second information carried by a PDCCH, wherein the second information is used to indicate one or two unified TCI states in the unified TCI states indicated/activated by the first information, wherein the second information includes a first TCI codepoint in the at least one TCI codepoint, wherein the first TCI codepoint corresponds to the one or two unified TCI states;

A network device transmits the first information and the second information.

The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

FIG8 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG8 , the terminal device 800 may include a processor 810 and a memory 820; the memory 820 stores data and programs and is coupled to the processor 810. It is worth noting that the figure is exemplary; other types of structures may also be used to supplement or replace the structure to implement telecommunication functions or other functions.

For example, the processor 810 may be configured to execute a program to implement the unified transmission configuration indication state indication receiving method as described in the embodiment of the first aspect. For example, the processor 810 may be configured to perform the following control: the terminal device receives first information for indicating/activating a unified TCI state, the first information being a first MAC CE, the first MAC CE including at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponding to one unified TCI state or two unified TCI states; wherein the terminal device, before receiving the first information, the latest spatial filter or QCL reference used for sending or receiving is not indicated/activated by the first MAC CE; and the terminal device receives Receive second information carried by PDCCH, where the second information is used to indicate one or two unified TCI states indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.

As shown in FIG8 , the terminal device 800 may further include: a communication module 830, an input unit 840, a display 850, and a power supply 860. The functions of the above components are similar to those in the related art and are not described in detail here. It is worth noting that the terminal device 800 does not necessarily include all the components shown in FIG8 , and the above components are not necessary; in addition, the terminal device 800 may also include components not shown in FIG8 , and reference may be made to the related art.

An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

FIG9 is a schematic diagram of a network device according to an embodiment of the present application. As shown in FIG9 , the network device 900 may include: a processor 910 (e.g., a central processing unit CPU) and a memory 920; the memory 920 is coupled to the processor 910. The memory 920 may store various data; in addition, it may store a program 930 for information processing, and the program 930 may be executed under the control of the processor 910.

For example, the processor 910 may be configured to execute a program to implement the unified transmission configuration indication state indication method as described in the embodiment of the second aspect. For example, the processor 910 may be configured to perform the following control: sending first information for indicating/activating a unified TCI state to a terminal device, the first information being a first MAC CE, the first MAC CE including at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponding to one unified TCI state or two unified TCI states; wherein the terminal device, before receiving the first information, the latest spatial filter or QCL reference used for sending or receiving is not indicated/activated by the first MAC CE; sending second information carried by a PDCCH, the second information being used to indicate one or two unified TCI states in the unified TCI state indicated/activated by the first information, the second information including a first TCI codepoint in the at least one TCI codepoint, the first TCI codepoint corresponding to the one or two unified TCI states.

In addition, as shown in FIG9 , the network device 900 may further include: a transceiver 940 and an antenna 950, etc.; wherein the functions of the above components are similar to those in the related art and are not described in detail here. It is worth noting that the network device 900 does not necessarily include all the components shown in FIG9 ; in addition, the network device 900 may also include components not shown in FIG9 , which may refer to the related art.

An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the method described in the embodiment of the first aspect.

An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method described in the embodiment of the first aspect.

An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the method described in the embodiment of the second aspect.

An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method described in the embodiment of the second aspect.

The above devices and methods of the present application can be implemented by hardware, or by hardware combined with software. The present application relates to such a computer-readable program, which, when executed by a logic component, enables the logic component to implement the above-mentioned devices or components, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

The method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and/or one or more combinations of the functional block diagrams may correspond to various software modules of the computer program flow or to various hardware modules. These software modules may correspond to the various steps shown in the figure, respectively. These hardware modules may be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in a memory of a mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if a device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

One or more of the functional blocks and/or one or more combinations of the functional blocks described in the drawings may be implemented as a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete Gate or transistor logic devices, discrete hardware components, or any suitable combination thereof. One or more of the functional blocks described in the drawings and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on the spirit and principles of the present application, and these modifications and variations are also within the scope of the present application.

Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

Method on the terminal device side

1. A unified TCI state indication method, applied to a terminal device, the method comprising:

The terminal device receives first information for indicating/activating a unified TCI state, the first information is a first MAC CE, the first MAC CE includes at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the latest spatial filter or QCL reference used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE; and,

The terminal device receives second information carried by PDCCH, the second information being used to indicate one or two unified TCI states indicated/activated by the first information, the second information including a first TCI codepoint among the at least one TCI codepoint, the first TCI codepoint corresponding to the one or two unified TCI states.

2. The method according to Note 1, wherein:

The one unified TCI state is the first unified TCI state or the second unified TCI state, and the two unified TCI states are the first unified TCI state and the second unified TCI state;

The first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first combined unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second combined unified TCI state.

3. The method according to Note 1, wherein:

The terminal device determines the spatial filter or QCL reference in the following manner:

The initial high-level parameter dl-OrJointTCI-StateList received by the terminal device is configured with two or more TCI-states. Before the configured TCI state takes effect, the synchronization signal/physical broadcast channel SS/PBCH (Synchronization Signal/Physical Broadcast Channel) of the initial random access phase is used as the QCL reference;

The initial high-level parameter dl-OrJointTCI-StateList received by the terminal device is configured with 2 or more TCI-states, or the initial high-level parameter ul-TCI-StateList received is configured with 2 or more TCI-UL-states, and before the configured TCI state takes effect, the random access response (RAR, Random Access Response) of the initial random access phase is used as the spatial filter;

The terminal device configures two or more TCI-states in the high-level parameter dl-OrJointTCI-StateList received in the RRC reconfiguration with sync procedure, and before the configured TCI state takes effect, the synchronization signal/physical broadcast channel SS/PBCH (Synchronization Signal/Physical Broadcast Channel) or CSI-RS resource (CSI-RS resource) of the random access phase initiated by the RRC reconfiguration is used as the QCL reference;

The terminal device configures two or more TCI-states in the high-level parameter dl-OrJointTCI-StateList received in the RRC reconfiguration with sync procedure, or configures two or more TCI-UL-states in the high-level parameter ul-TCI-StateList received, and before the configured TCI state takes effect, the RAR of the random access phase initiated by the RRC reconfiguration is used as the spatial filter;

The terminal device uses the TCI state configured by tci-StatesToAddModList as the QCL reference;

The terminal device uses the unified TCI state indicated/activated by the third information as the spatial filter or the QCL reference, the third information is the second MAC CE, the second MAC CE indicates/activates the unified TCI state corresponding to at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponds to only one unified TCI state, the one unified TCI state is a downlink unified TCI state, or, an uplink unified TCI state, or, a combined unified TCI state, or, a downlink unified TCI state and an uplink unified TCI state.

4. The method according to Note 1, wherein the method further comprises:

Before receiving the first information, the terminal device receives multi-TRP configuration information from a network device, where the multi-TRP configuration information includes at least one of the following:

Frequency Division Multiplexing-Time Division Multiplexing in RRC parameter repetition scheme configuration (RepetitionSchemeConfig) The repetition scheme (repetitionScheme) in the frequency division multiplexing (fdm-TDM) is configured as the first frequency division multiplexing scheme ('fdmSchemeA'),

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the second frequency division multiplexing scheme ('fdmSchemeB');

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first time division multiplexing scheme ('tdmSchemeA');

The repetition number (repetitionNumber) in the RRC parameter physical downlink shared channel time domain resource allocation (PDSCH-TimeDomainResourceAllocation) is configured;

The RRC parameter single frequency network scheme physical downlink control channel (sfnSchemePDCCH) is configured;

The RRC parameter single frequency network scheme physical downlink shared channel (sfnSchemePDSCH) is configured;

Two search spaces (SearchSpace) on a partial bandwidth (BWP) are associated with the same search space linking identifier (SearchSpaceLinkingId);

The mapping pattern (mappingPattern) is configured in the RRC parameter physical uplink control channel configuration (PUCCH-Config);

Two sounding reference signal resource sets (SRS Resource set) are configured in the first sounding reference signal resource set new modification list (srs-ResourceSetToAddModList) or the second sounding reference signal resource set new modification list (srs-ResourceSetToAddModListDCI-0-2) of the RRC parameter sounding reference signal configuration (SRS-Config).

5. The method according to Note 2, wherein:

Before receiving the second information, the terminal device uses the spatial filter, or the QCL reference, or the first unified TCI state, or the second unified TCI state to receive or send:

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL; and/or

The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the space a first unified TCI state or a second unified TCI state referenced or used by the filter or the QCL; and/or

The unified TCI state indicated by the second information includes only the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL.

6. The method according to Note 2, wherein:

Before receiving the second information, the terminal device uses the spatial filter or the QCL reference to receive or send:

The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the spatial filter or the QCL reference; and/or

The unified TCI state indicated by the second information only includes the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used to replace the spatial filter or the QCL reference; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the spatial filter or the QCL reference;

and/or,

Before receiving the second information, the terminal device uses the first unified TCI stat to receive or send:

The unified TCI state indicated by the second information only includes the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used instead of the first unified TCI state used; and/or

The unified TCI state indicated by the second information only includes the second unified TCI state, the first unified TCI state continues to be used and the second unified TCI state in the unified TCI state indicated by the second information is also used; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state;

and/or

Before receiving the second information, the terminal device uses the second unified TCI stat to receive or send:

The unified TCI state indicated by the second information only includes the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used instead of the second unified TCI state used; and/or

The unified TCI state indicated by the second information includes only the first unified TCI state, the second unified TCI state continues to be used and the first unified TCI state in the unified TCI state indicated by the second information is also used; and/or

The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used instead of the second unified TCI state.

7. The method according to Note 2, wherein:

There is at least one second TCI codepoint in at least one TCI codepoint of the first information, wherein one of the second TCI codepoints corresponds to a first unified TCI state and a second unified TCI state,

Before the unified TCI state indicated by the second information takes effect, the first unified TCI state and the second unified TCI state corresponding to the second TCI codepoint are used.

8. The method according to Supplement 7, wherein:

When the number of the second TCI codepoint is more than one, the first unified TCI state and the second unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used.

9. The method according to Supplement 7, wherein:

In the uplink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first uplink unified TCI state and a second uplink unified TCI state, and the first uplink unified TCI state and the second uplink unified TCI state are used; and/or,

In the downlink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first downlink unified TCI state and a second downlink unified TCI state, and the first downlink unified TCI state and the second downlink unified TCI state are used; and/or,

In the uplink and downlink transmission directions, the unified TCI state packet corresponding to the second TCI codepoint Includes a first unified TCI state and a second unified TCI state, and uses the first unified TCI state and the second unified TCI state.

10. The method according to Note 9, wherein:

In the uplink transmission direction, the number of the second TCI codepoint is more than one, and the first uplink unified TCI state and the second uplink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the plurality of the second TCI codepoints are used; and/or,

In the downlink transmission direction, the number of the second TCI codepoint is more than one, and the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the plurality of the second TCI codepoints are used; and/or,

In the uplink transmission direction and the downlink transmission direction, the number of the second TCI codepoint is more than one, and the first unified TCI state and the second unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used.

11. The method according to Note 7, wherein:

In the uplink transmission direction and the downlink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first uplink unified TCI state, a second uplink unified TCI state, a first downlink unified TCI state, and a second downlink unified TCI state;

In the uplink transmission direction, the first uplink unified TCI state and the second uplink unified TCI state in the unified TCI state corresponding to the second TCI codepoint are used, and in the downlink transmission direction, the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the second TCI codepoint are used.

12. The method according to Note 11, wherein:

When the number of the second TCI codepoint is more than one, the first uplink unified TCI state, the second uplink unified TCI state, the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used.

13. The method according to Note 4, wherein:

After receiving the multi-TRP configuration information, there is a second TCI codepoint in at least one TCI codepoint included in the first information received for the first time, and the second TCI codepoint corresponds to two unified TCI states.

14. The method according to Note 2, wherein the unified TCI state corresponding to the TCI codepoint is at least one of the following:

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state;

The first is the unified TCI state for downlink, and the second is the unified TCI state for uplink;

First downlink unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state;

The second downstream unified TCI state, the second upstream unified TCI state;

The second downstream unified TCI state;

First uplink unified TCI state, second uplink unified TCI state;

First uplink unified TCI state;

The second upstream unified TCI state;

first unified TCI state, second unified TCI state;

first unified TCI state; or

The second unified TCI state.

Methods on the network device side

1. A unified TCI state indication method, applied to a network device, the method comprising:

Sending first information for indicating/activating a unified TCI state to a terminal device, where the first information is a first MAC CE, where the first MAC CE includes at least one TCI codepoint, and one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or QCL reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE;

Send second information carried by PDCCH, wherein the second information is used to indicate one or two unified TCI states indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.

2. The method according to Note 1, wherein:

The one unified TCI state is the first unified TCI state or the second unified TCI state, and the two unified TCI states are the first unified TCI state and the second unified TCI state;

The first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first combined unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second combined unified TCI state.

3. The method according to Note 1, wherein the method further comprises:

The network device sends multiple TRP configuration information before sending the first information, where the multiple TRP configuration information includes at least one of the following:

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first frequency division multiplexing scheme ('fdmSchemeA'),

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the second frequency division multiplexing scheme ('fdmSchemeB');

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first time division multiplexing scheme ('tdmSchemeA');

The repetition number (repetitionNumber) in the RRC parameter physical downlink shared channel time domain resource allocation (PDSCH-TimeDomainResourceAllocation) is configured;

The RRC parameter single frequency network scheme physical downlink control channel (sfnSchemePDCCH) is configured;

The RRC parameter single frequency network scheme physical downlink shared channel (sfnSchemePDSCH) is configured;

Two search spaces (SearchSpace) on a partial bandwidth (BWP) are associated with the same search space linking identifier (SearchSpaceLinkingId);

The mapping pattern (mappingPattern) is configured in the RRC parameter physical uplink control channel configuration (PUCCH-Config);

Two sounding reference signal resource sets (SRS Resource set) are configured in the first sounding reference signal resource set new modification list (srs-ResourceSetToAddModList) or the second sounding reference signal resource set new modification list (srs-ResourceSetToAddModListDCI-0-2) of the RRC parameter sounding reference signal configuration (SRS-Config).

4. The method according to Note 2, wherein the unified TCI state corresponding to the TCI codepoint is at least one of the following:

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state;

The first is the unified TCI state for downlink, and the second is the unified TCI state for uplink;

First downlink unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state;

The second downstream unified TCI state, the second upstream unified TCI state;

The second downstream unified TCI state;

First uplink unified TCI state, second uplink unified TCI state;

First uplink unified TCI state;

The second upstream unified TCI state;

first unified TCI state, second unified TCI state;

first unified TCI state; or

The second unified TCI state.

Devices on the network equipment side

1. A unified TCI state indication device, configured in a network device, comprising:

A transceiver unit, which sends first information for indicating/activating a unified TCI state to a terminal device, wherein the first information is a first MAC CE, and the first MAC CE includes at least one TCI codepoint, and one TCI codepoint of the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or QCL reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE;

The transceiver unit sends second information carried by PDCCH, the second information is used to indicate one or two unified TCI states indicated/activated by the first information, the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.

2. The device according to Note 1, wherein:

The one unified TCI state is the first unified TCI state or the second unified TCI state, and the two unified TCI states are the first unified TCI state and the second unified TCI state;

The first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first combined unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second combined unified TCI state.

3. The device according to Note 1, wherein:

Before sending the first information, the transceiver unit sends multiple TRP configuration information, where the multiple TRP configuration information includes at least one of the following:

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first frequency division multiplexing scheme ('fdmSchemeA'),

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the second frequency division multiplexing scheme ('fdmSchemeB');

The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first time division multiplexing scheme ('tdmSchemeA');

The repetition number (repetitionNumber) in the RRC parameter physical downlink shared channel time domain resource allocation (PDSCH-TimeDomainResourceAllocation) is configured;

The RRC parameter single frequency network scheme physical downlink control channel (sfnSchemePDCCH) is configured;

The RRC parameter single frequency network scheme physical downlink shared channel (sfnSchemePDSCH) is configured;

Two search spaces (SearchSpace) on a partial bandwidth (BWP) are associated with the same search space linking identifier (SearchSpaceLinkingId);

The mapping pattern (mappingPattern) is configured in the RRC parameter physical uplink control channel configuration (PUCCH-Config);

Two sounding reference signal resource sets (SRS Resource set) are configured in the first sounding reference signal resource set new modification list (srs-ResourceSetToAddModList) or the second sounding reference signal resource set new modification list (srs-ResourceSetToAddModListDCI-0-2) of the RRC parameter sounding reference signal configuration (SRS-Config).

4. The apparatus according to Note 2, wherein the unified TCI state corresponding to the TCI codepoint is at least one of the following:

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, second downlink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state;

First downlink unified TCI state, first uplink unified TCI state;

The first is the unified TCI state for downlink, and the second is the unified TCI state for uplink;

First downlink unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state;

The second downstream unified TCI state, the first upstream unified TCI state;

The second downstream unified TCI state, the second upstream unified TCI state;

The second downstream unified TCI state;

First uplink unified TCI state, second uplink unified TCI state;

First uplink unified TCI state;

The second upstream unified TCI state;

first unified TCI state, second unified TCI state;

first unified TCI state; or

Second unified TCI state.

Claims (20)

A unified transmission configuration indication state (unified TCI state) indication device, configured in a terminal device, comprising: A transceiver unit, which receives first information for indicating/activating a unified TCI state, wherein the first information is a first media access control element (MAC CE), wherein the first MAC CE includes at least one transmission configuration indication code point (TCI codepoint), wherein one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or quasi co-location (QCL) reference used for sending or receiving by the transceiver unit last (latest) before receiving the first information is not indicated/activated by the first MAC CE; The transceiver unit receives second information carried by a physical downlink control channel (PDCCH), the second information being used to indicate one or two unified TCI states indicated/activated by the first information, the second information including a first TCI codepoint among the at least one TCI codepoint, the first TCI codepoint corresponding to the one or two unified TCI states. The device according to claim 1, wherein The one unified TCI state is the first unified TCI state or the second unified TCI state, and the two unified TCI states are the first unified TCI state and the second unified TCI state; The first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first combined unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second combined unified TCI state. The device according to claim 1, wherein The terminal device determines the spatial filter or QCL reference in the following manner: The initial high-level parameter dl-OrJointTCI-StateList received by the terminal device is configured with two or more TCI-states. Before the configured TCI state takes effect, the synchronization signal/physical broadcast channel (SS/PBCH) of the initial random access phase is used as the QCL reference; The terminal device receives an initial high-level parameter dl-OrJointTCI-StateList configured with two or more TCI-states, or receives an initial high-level parameter ul-TCI-StateList configured with two or more TCI-UL-states. Before the configured TCI state takes effect, the random access response of the initial random access phase (RAR, Random Access Response) as the spatial filter; The terminal device configures two or more TCI-states in the high-level parameter dl-OrJointTCI-StateList received in the RRC (Radio Resource Management) reconfiguration with synchronization procedure, and before the configured TCI state takes effect, the synchronization signal/physical broadcast channel (SS/PBCH, Synchronization Signal/Physical Broadcast Channel) or CSI-RS (Channel State Information Reference Signal) resource of the random access phase initiated by the RRC reconfiguration is used as the QCL reference; The terminal device configures two or more TCI-states in the high-level parameter dl-OrJointTCI-StateList received in the RRC reconfiguration with sync procedure, or configures two or more TCI-UL-states in the high-level parameter ul-TCI-StateList received, and before the configured TCI state takes effect, the RAR of the random access phase initiated by the RRC reconfiguration is used as the spatial filter; The terminal device uses the TCI state configured by tci-StatesToAddModList as the QCL reference; The terminal device uses the unified TCI state indicated/activated by the third information as the spatial filter or the QCL reference, the third information is the second MAC CE, the second MAC CE indicates/activates the unified TCI state corresponding to at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponds to only one unified TCI state, the one unified TCI state is a downlink unified TCI state, or, an uplink unified TCI state, or, a combined unified TCI state, or, a downlink unified TCI state and an uplink unified TCI state. The device according to claim 1, wherein Before receiving the first information, the transceiver unit receives multiple transmit and receive point (TRP) configuration information from a network device, where the multiple TRP configuration information includes at least one of the following: The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first frequency division multiplexing scheme ('fdmSchemeA'), The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the second frequency division multiplexing scheme ('fdmSchemeB'); The repetition scheme (repetitionScheme) in the frequency division multiplexing-time division multiplexing (fdm-TDM) in the RRC parameter repetition scheme configuration (RepetitionSchemeConfig) is configured as the first time division multiplexing scheme ('tdmSchemeA'); The repetition number (repetitionNumber) in the RRC parameter physical downlink shared channel time domain resource allocation (PDSCH-TimeDomainResourceAllocation) is configured; The RRC parameter single frequency network scheme physical downlink control channel (sfnSchemePDCCH) is configured; The RRC parameter single frequency network scheme physical downlink shared channel (sfnSchemePDSCH) is configured; Two search spaces (SearchSpace) on a partial bandwidth (BWP) are associated with the same search space linking identifier (SearchSpaceLinkingId); The mapping pattern (mappingPattern) is configured in the RRC parameter physical uplink control channel configuration (PUCCH-Config); Two sounding reference signal resource sets (SRS Resource set) are configured in the first sounding reference signal resource set new modification list (srs-ResourceSetToAddModList) or the second sounding reference signal resource set new modification list (srs-ResourceSetToAddModListDCI-0-2) of the RRC parameter sounding reference signal configuration (SRS-Config). The device according to claim 2, wherein Before receiving the second information, the transceiver unit uses the spatial filter, or the QCL reference, or the first unified TCI state, or the second unified TCI state to receive or send: The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL; and/or The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL; and/or The unified TCI state indicated by the second information includes only the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL. The device according to claim 2, wherein Before receiving the second information, the transceiver unit uses the spatial filter or the QCL reference to receive or send: The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the space filter or said QCL reference; and/or The unified TCI state indicated by the second information only includes the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used to replace the spatial filter or the QCL reference; and/or The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the spatial filter or the QCL reference; and/or, Before receiving the second information, the transceiver unit uses the first unified TCI stat to receive or send: The unified TCI state indicated by the second information only includes the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used instead of the first unified TCI state used; and/or The unified TCI state indicated by the second information only includes the second unified TCI state, the first unified TCI state continues to be used and the second unified TCI state in the unified TCI state indicated by the second information is also used; and/or The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state; and/or Before receiving the second information, the transceiver unit uses the second unified TCI stat to receive or send: The unified TCI state indicated by the second information only includes the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used instead of the second unified TCI state used; and/or The unified TCI state indicated by the second information includes only the first unified TCI state, the second unified TCI state continues to be used and the first unified TCI state in the unified TCI state indicated by the second information is also used; and/or The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used. TCI state and the second unified TCI state are used instead of the second unified TCI state. The device according to claim 2, wherein There is at least one second TCI codepoint in at least one TCI codepoint of the first information, wherein one second TCI codepoint corresponds to a first unified TCI state and a second unified TCI state, and before the unified TCI state indicated by the second information takes effect, the first unified TCI state and the second unified TCI state corresponding to the second TCI codepoint are used. The device according to claim 7, wherein When the number of the second TCI codepoint is more than one, the first unified TCI state and the second unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used. The device according to claim 7, wherein In the uplink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first uplink unified TCI state and a second uplink unified TCI state, and the first uplink unified TCI state and the second uplink unified TCI state are used; and/or, In the downlink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first downlink unified TCI state and a second downlink unified TCI state, and the first downlink unified TCI state and the second downlink unified TCI state are used; and/or, In the uplink and downlink transmission directions, the unified TCI state corresponding to the second TCI codepoint includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state are used. The device according to claim 9, wherein In the uplink transmission direction, the number of the second TCI codepoint is more than one, and the first uplink unified TCI state and the second uplink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the plurality of the second TCI codepoints are used; and/or, In the downlink transmission direction, the number of the second TCI codepoint is more than one, and the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the plurality of the second TCI codepoints are used; and/or, In the uplink transmission direction and the downlink transmission direction, the number of the second TCI codepoint is more than one, and the first unified TCI state and the second unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used. The device according to claim 7, wherein In the uplink transmission direction and the downlink transmission direction, the unified TCI state corresponding to the second TCI codepoint includes a first uplink unified TCI state, a second uplink unified TCI state, a first downlink unified TCI state, and a second downlink unified TCI state; In the uplink transmission direction, the first uplink unified TCI state and the second uplink unified TCI state in the unified TCI state corresponding to the second TCI codepoint are used, and in the downlink transmission direction, the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the second TCI codepoint are used. The device according to claim 11, wherein When the number of the second TCI codepoint is more than one, the first uplink unified TCI state, the second uplink unified TCI state, the first downlink unified TCI state and the second downlink unified TCI state in the unified TCI state corresponding to the minimum or lowest second TCI codepoint among the multiple second TCI codepoints are used. The device according to claim 4, wherein After receiving the multi-TRP configuration information, there is a second TCI codepoint in at least one TCI codepoint included in the first information received for the first time, and the second TCI codepoint corresponds to two unified TCI states. The device according to claim 2, wherein the unified TCI state corresponding to the TCI codepoint is at least one of the following: First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state; First downlink unified TCI state, second downlink unified TCI state, first uplink unified TCI state; First downlink unified TCI state, second downlink unified TCI state, second uplink unified TCI state; First downlink unified TCI state, second downlink unified TCI state; First downlink unified TCI state, first uplink unified TCI state, second uplink unified TCI state; First downlink unified TCI state, first uplink unified TCI state; The first is the unified TCI state for downlink, and the second is the unified TCI state for uplink; First downlink unified TCI state; The second downstream unified TCI state, the first upstream unified TCI state, and the second upstream unified TCI state; Second downlink unified TCI state, first uplink unified TCI state; The second downstream unified TCI state, the second upstream unified TCI state; The second downstream unified TCI state; First uplink unified TCI state, second uplink unified TCI state; First uplink unified TCI state; The second upstream unified TCI state; first unified TCI state, second unified TCI state; first unified TCI state; or The second unified TCI state. A unified TCI state indication method, applied to a terminal device, comprising: The terminal device receives first information for indicating/activating a unified TCI state, the first information is a first MAC CE, the first MAC CE includes at least one TCI codepoint, one TCI codepoint in the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or QCL reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE; and, The terminal device receives second information carried by PDCCH, the second information being used to indicate one or two unified TCI states indicated/activated by the first information, the second information including a first TCI codepoint among the at least one TCI codepoint, the first TCI codepoint corresponding to the one or two unified TCI states. The method according to claim 15, wherein The one unified TCI state is the first unified TCI state or the second unified TCI state, and the two unified TCI states are the first unified TCI state and the second unified TCI state; The first unified TCI state includes at least one of the following: a first downlink unified TCI state, a first uplink unified TCI state, and a first combined unified TCI state; the second unified TCI state includes at least one of the following: a second downlink unified TCI state, a second uplink unified TCI state, and a second combined unified TCI state. The method according to claim 16, wherein the method further comprises: Before receiving the second information, the transceiver unit uses the spatial filter, or the QCL reference, or the first unified TCI state, or the second unified TCI state to receive or send: The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used. The first unified TCI state or the second unified TCI state used by the spatial filter or the QCL is replaced by the second unified TCI state; and/or The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL; and/or The unified TCI state indicated by the second information includes only the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used to replace the first unified TCI state or the second unified TCI state referenced or used by the spatial filter or the QCL. The method according to claim 16, wherein the method further comprises: Before receiving the second information, the terminal device uses the spatial filter or the QCL reference to receive or send: The unified TCI state indicated by the second information includes only the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used to replace the spatial filter or the QCL reference; and/or The unified TCI state indicated by the second information only includes the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used to replace the spatial filter or the QCL reference; and/or The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the spatial filter or the QCL reference; and/or, Before receiving the second information, the terminal device uses the first unified TCI stat to receive or send: The unified TCI state indicated by the second information only includes the first unified TCI state, and the first unified TCI state in the unified TCI state indicated by the second information is used instead of the first unified TCI state used; and/or The unified TCI state indicated by the second information includes only the second unified TCI state, the first unified TCI state is continued to be used and the second unified TCI state in the unified TCI state indicated by the second information is also used; and/or The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used to replace the first unified TCI state; and/or Before receiving the second information, the terminal device uses the second unified TCI stat to receive or send: The unified TCI state indicated by the second information only includes the second unified TCI state, and the second unified TCI state in the unified TCI state indicated by the second information is used instead of the second unified TCI state used; and/or The unified TCI state indicated by the second information includes only the first unified TCI state, the second unified TCI state continues to be used and the first unified TCI state in the unified TCI state indicated by the second information is also used; and/or The unified TCI state indicated by the second information includes a first unified TCI state and a second unified TCI state, and the first unified TCI state and the second unified TCI state in the unified TCI state indicated by the second information are used instead of the second unified TCI state. The method according to claim 16, wherein the method further comprises: There is at least one second TCI codepoint in at least one TCI codepoint of the first information, wherein one second TCI codepoint corresponds to a first unified TCI state and a second unified TCI state, and before the unified TCI state indicated by the second information takes effect, the first unified TCI state and the second unified TCI state corresponding to the second TCI codepoint are used. A unified TCI state indication device, configured in a network device, comprising: A transceiver unit, which sends first information for indicating/activating a unified TCI state to a terminal device, wherein the first information is a first MAC CE, and the first MAC CE includes at least one TCI codepoint, and one TCI codepoint of the at least one TCI codepoint corresponds to one unified TCI state or two unified TCI states; wherein the spatial filter or QCL reference last used for sending or receiving by the terminal device before receiving the first information is not indicated/activated by the first MAC CE; The transceiver unit sends second information carried by PDCCH, where the second information is used to indicate one or two unified TCI states in the unified TCI states indicated/activated by the first information, and the second information includes a first TCI codepoint in the at least one TCI codepoint, and the first TCI codepoint corresponds to the one or two unified TCI states.