Data receiving device, data transmission device, and method

Abstract

Embodiments of the present invention provide a data receiving device, a data transmitting device, and a method. The method includes the steps of: a terminal device receiving first instruction information, the first instruction information indicating at least one set of unified transmission configuration instruction states (unified TCI states) for a plurality of transmission and reception points (TRPs); and the terminal device determining a transmission configuration instruction state (TCI state) in the at least one set of unified transmission configuration instruction states (unified TCI states) based on the first instruction information. This makes it possible to accurately indicate at least one set of unified TCI states and the TCI state in the at least one set of unified TCI states in a multi-TRP scenario with less complexity.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of communication technologies.

Background Art

[0002] The 3GPP (registered trademark) standardization organization carried out the standardization work of unified transmission configuration indication (TCI) in the release 17 (Rel-17) standardization process. Here, the unified TCI in Rel-17 is mainly designed for the single TRP or single transmission and reception point (sTRP) scenario.

[0003] With the advancement of standardization work, multiple TRP or multi-TRP (multiple transmission and reception point) has become an important scenario in the 5G NR system, and through transmission based on mTRP, improvement in throughput or reliability can be achieved.

[0004] In previous standardization efforts, Rel-16 standardized Physical Downlink Shared Channel (PDSCH) transmission based on mTRP. Rel-17 standardized Physical Downlink Control Channel (PDCCH), Physical Uplink Shared Channel (PUSCH), and Physical Uplink Control Channel (PUCCH) transmission based on mTRP. Here, mTRP transmission includes mTRP transmission based on single DCI (single Downlink Control Information: sDCI) and mTRP transmission based on multiple DCI (mDCI).

[0005] Furthermore, the above explanation of the background art is merely intended to provide a clearer and more complete explanation of the present invention's structure and to facilitate understanding for those skilled in the art. These structures, as described in the background art section of the present invention, should not be construed as being well-known to those skilled in the art. [Overview of the project] [Problems that the invention aims to solve]

[0006] In the Rel-17 unified TCI sTRP (single transmission and reception point) scenario, the network device uses Radio Resource Control (RRC) signaling to configure M (M≧1) TCI states for the terminal device, uses a Media Access Control (MAC) control element (CE) to activate N (1≦N≦M) TCI states out of the M TCI states, and uses DCI to indicate L (1≦L≦N) TCI states out of the N TCI states. Here, the transmission configuration indication (TCI) field of DCI format 1_1 or DCI format 1_2 (hereinafter referred to as the "TCI field") indicates one or more TCI states, and DCI format 1_1 or DCI format 1_2 may schedule downlink data and is called DCI format 1_1 / 1_2 with DL assignment, or it may not schedule downlink data and is called DCI format 1_1 / 1_2 without DL assignment.

[0007] A single TCI state (abbreviated as TCI) may include or correspond to one or two source reference signals (source RS). A source reference signal may provide quasi-co-location (QCL) information for downlink reception, and this information is referred to as the downlink source reference signal. A source reference signal may provide a reference for an uplink transmission spatial filter (UL TX spatial filter), and this reference is referred to as the uplink source reference signal. A source reference signal may provide beam information for a destination channel / signal. For example, the beam used by a terminal device to receive a destination channel / signal is the same as the beam used to receive the downlink source reference signal. As another example, the beam used by a terminal device to transmit a destination channel / signal is the same as the beam used to transmit the uplink source reference signal. As yet another example, the beam used by a terminal device to transmit a destination channel / signal is compatible with the beam used to receive the downlink source reference signal, i.e., uses a beam in the opposite direction.

[0008] Therefore, the indication or update of the TCI state also includes the indication or update of the beam used by the terminal equipment. The TCI state includes the joint DL / UL TCI state and the separate DL / UL TCI state, where the separate TCI state includes the separate DLTCI state and the separate UL TCI state. In this specification, "joint" or "separate" both mean a joint of uplink and downlink or separate uplink and downlink. The downlink separate TCI state is divided into the separate downlink TCI state and the separate uplink TCI state, and the downlink TCI state or the first / second downlink TCI state described later belongs to the separate TCI state, and the uplink TCI state or the first / second uplink TCI state described later also belongs to the separate TCI state.

[0009] The source reference signal included in the downlink TCI state is the downlink source reference signal, the source reference signal included in the uplink TCI state is the uplink source reference signal, and the source reference signal included in the joint TCI state is both the downlink source reference signal and the uplink source reference signal. The joint TCI state acts on both the downlink beam (receive beam) and the uplink beam (transmit beam). In other words, the downlink beam and the uplink beam use the same beam but in opposite directions, i.e., the uplink beam and the downlink beam are interchangeable. The downlink TCI state acts only on the downlink beam. The uplink TCI state acts only on the uplink beam. The uplink beam is also called the uplink transmit space filter. The TCI field may indicate a joint TCI state (joint DL / UL TCI), or the TCI field may indicate a downlink TCI state and / or an uplink TCI state. These two modes may be configured via RRC signaling. In Rel-17 unified TCI, one TCI field indicates either a joint TCI state, one downlink TCI state, one uplink TCI state, or one downlink TCI state and one uplink TCI state.

[0010] In the NR system, whether to use a joint TCI state or a single TCI state is determined by the higher-level parameter unifiedTCI-StateType. The TCI field of the corresponding DCI, which indicates whether it is a joint TCI state or a single TCI state (hereafter, this can be replaced with "TCI state indicated by the DCI"), depends on the higher-level parameter unifiedTCI-StateType. If the value of the unifiedTCI-StateType parameter is "joint", the DCI indicates one or more joint TCI states (in Rel-17, it indicates a maximum of one joint TCI state, and in Rel-18, it indicates a maximum of two TCI states). If the value of the TCI state parameter is "TCI state", the DCI indicates one or more single unifiedTCI-StateTypes.

[0011] Multiple transmission and reception point (mTRP) is a key scenario in 5G NR systems, and mTRP-based transmission can improve throughput or reliability. Rel-16 standardized mTRP-based PDSCH transmission, and Rel-17 standardized mTRP-based PDCCH, PUSCH, and PUCCH transmission. Furthermore, mTRP transmission in current Rel-17 includes sDCI (single DCI)-based mTRP transmission and mDCI (multiple DCI)-based mTRP transmission. sDCI-based mTRP transmission is more suitable when one DCI schedules uplink transmissions for two TRPs and backhaul between TRPs is not ideal. mDCI-based mTRP transmission is more suitable when two TRPs use two DCIs to schedule uplink transmissions for their respective TRPs and backhaul between TRPs is not ideal.

[0012] However, according to the inventors of this invention, in Rel-18, existing TCI state activation / deactivation methods cannot support unified TCI state activation / deactivation in mTRP scenarios. Therefore, how to support unified TCI state activation / deactivation in mTRP scenarios is an urgent issue that needs to be resolved.

[0013] In view of at least one of the above problems, embodiments of the present invention provide a data receiving device, a data transmitting device, and a method that enable the accurate representation of at least one set of unified TCI states in a multi-TRP scenario and the TCI states in said set of unified TCI states with less complexity. [Means for solving the problem]

[0014] One embodiment of the present invention provides a data reception method applicable to a terminal device, comprising the steps of: receiving first instruction information, wherein the first instruction information indicates at least one set of unified transmission configuration instruction states (unified TCI states) of a plurality of transmission and reception points (TRPs); and determining a transmission configuration instruction state (TCI state) in the at least one set of unified transmission configuration instruction states (unified TCI states) based on the first instruction information.

[0015] Another embodiment of the present invention provides a data transmission method applicable to a network device, comprising the steps of transmitting first instruction information, wherein the first instruction information indicates at least one set of unified transmission configuration instruction states (TCI states) for a plurality of transmission and reception points (TRPs), and the terminal device determines a transmission configuration instruction state (TCI state) in the at least one set of unified transmission configuration instruction states (unified TCI states) based on the first instruction information.

[0016] Another embodiment of the present invention provides a data receiving device configured in a terminal device, comprising: a receiving unit that receives first instruction information, wherein the first instruction information indicates at least one set of unified TCI states of a plurality of transmission and reception points (TRPs); and a determination unit that determines a transmission configuration instruction state (TCI state) in the at least one set of unified TCI states based on the first instruction information.

[0017] In another embodiment of the present invention, a data transmission device configured in a network device is provided, comprising a transmission unit that transmits first instruction information, wherein the first instruction information indicates at least one set of unified TCI states for a plurality of transmission and reception points (TRPs), and the terminal device determines the TCI state in the at least one set of unified TCI states based on the first instruction information.

[0018] One of the advantageous effects of the embodiment of the present invention is as follows: A terminal device receives first instruction information, which indicates at least one set of unified transmission configuration instruction states (unified TCI states) for multiple transmission and reception points (TRPs), and the terminal device determines the transmission configuration instruction state (TCI state) in the at least one set of unified transmission configuration instruction states (unified TCI states) based on the first instruction information. This makes it possible to accurately indicate at least one set of unified TCI states and the TCI state in the at least one set of unified TCI states in a multi-TRP scenario with less complexity.

[0019] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail, illustrating methods in which the principles of the present invention can be employed. However, the scope of embodiments of the present invention is not limited to these. Embodiments of the present invention include modified, altered, and equivalent forms within the scope of the gist and items of the appended claims.

[0020] Features described and / or shown in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in other embodiments, or may replace features in other embodiments.

[0021] In this text, the terms "includes / have" mean the presence of a feature, component, step, or constituent element, and do not exclude the presence or addition of one or more other features, components, steps, or constituent elements. [Brief explanation of the drawing]

[0022] Elements and features described in one drawing and one embodiment of the embodiments of the present invention may be combined with elements and features shown in one or more drawings or embodiments. In addition, similar reference numerals in the drawings may indicate corresponding elements in multiple drawings, and may indicate corresponding elements used in one or more embodiments. [Figure 1] It is a schematic diagram of a communication system according to an embodiment of the present invention. [Figure 2] It is a schematic diagram of an example of a MAC CE format according to an embodiment of the present invention. [Figure 3A] It is a schematic diagram of an example of an uplink in an mTRP scenario according to an embodiment of the present invention. [Figure 3B] It is a schematic diagram of an example of an uplink in an mTRP scenario according to an embodiment of the present invention. [Figure 4] It is a schematic diagram of an example of a data reception method according to an embodiment of the present invention. [Figure 5A] It is a schematic diagram of an example of first indication information according to an embodiment of the present invention. [Figure 5B] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 5C] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 6A] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 6B] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 6C] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 7A] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 7B] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 7C] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 7D] It is a schematic diagram of another example of first indication information according to an embodiment of the present invention. [Figure 8] It is a schematic diagram of an example of a data transmission method according to an embodiment of the present invention. [Figure 9] It is a schematic diagram of an example of a data reception device according to an embodiment of the present invention. [Figure 10] It is a schematic diagram of an example of a data transmission device according to an embodiment of the present invention. [Figure 11] This is a schematic diagram showing the configuration of a network device according to an embodiment of the present invention. [Figure 12] This is a schematic diagram showing the configuration of a terminal device according to an embodiment of the present invention. [Figure 13A] This is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. [Figure 13B] This is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. [Modes for carrying out the invention]

[0023] The above and other features of the present invention will become apparent from the following description. Specific embodiments of the present invention are disclosed in detail in the specification and drawings, and some embodiments in which the principles of the present invention can be employed are shown. However, the present invention is not limited to the embodiments described. The present invention includes all modified, altered and equivalent versions within the scope of the appended claims. Embodiments of the present invention will be described below with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0024] In embodiments of the present invention, terms such as "first," "second," etc., are used in titles to distinguish different elements, but do not represent a spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any one or more of the terms listed in the relevant list and all combinations thereof. The terms "include," "comprehensible," "have," etc., mean the presence of the listed features, elements, components, or components, but do not exclude the presence or addition of one or more other features, elements, components, or components.

[0025] In the embodiments of the present invention, singular nouns such as "one" and "the" should be understood broadly as "one type" or "one category," including plural forms, and not limited to "one." Furthermore, the term "the foregoing" should be understood to include both singular and plural forms unless the context explicitly indicates otherwise. Also, unless the context explicitly indicates otherwise, the term "as described" should be understood as "at least partially described," and the term "based on" should be understood as "based on at least partially."

[0026] In embodiments of the present invention, the terms "communication network" or "wireless communication network" may mean a network conforming to any communication standard such as Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA®), or High-Speed ​​Packet Access (HSPA).

[0027] Furthermore, communication between devices in a communication system may be carried out according to a communication protocol of any stage, and such communication protocol may include, but is not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G, New Radio (NR), and / or other currently known communication protocols or other communication protocols to be developed in the future.

[0028] In embodiments of the present invention, the term "network device" means, for example, a device within a communication system that allows a terminal device to access the communication system and provides services to said terminal device. A network device may include, but is not limited to, a 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.

[0029] Here, base stations may include, but are not limited to, node B (NodeB or NB), evolutionary node B (eNodeB or eNB), and 5G base stations (gNB), as well as remote radio heads (RRH), remote radio units (RRU), relays, or low-power nodes (e.g., femto, pico). The term “base station” may also include some or all of their functions, and each base station may provide communication coverage to a specific geographic area. The term “cell” may mean a base station and / or its coverage area, depending on the context in which the term is used.

[0030] In embodiments of the present invention, the terms "User Equipment" (UE) or "Terminal Equipment" (TE) refer to equipment that accesses a communication network and receives network services, for example, via a network device. Terminal equipment may be fixed or mobile and may be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc.

[0031] Here, terminal devices may include, but are not limited to, mobile phones (cellular phones), personal digital assistants (PDAs), radio modulators / demodulators, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smartphones, smartwatches, digital cameras, and the like.

[0032] Furthermore, in scenarios such as the Internet of Things (IoT), the user device may be a monitoring or measurement device or apparatus, and may include, but is not limited to, machine-type communication (MTC) terminals, in-vehicle communication terminals, industrial wireless devices, surveillance cameras, device-to-device (D2D) terminals, and machine-to-machine (M2M) terminals.

[0033] Furthermore, the terms “Network side” or “Network device side” mean the side of the network, which may be a base station or include one or more of the above-mentioned network devices. The terms “User side” or “Terminal side” or “Terminal device side” mean the side of the user or terminal, which may be a UE or include one or more of the above-mentioned terminal devices. In this specification, unless otherwise specified, “device” may mean network device or terminal device.

[0034] The following describes a scenario of an embodiment of the present invention with reference to an example, but the present invention is not limited thereto.

[0035] Figure 1 is a schematic diagram of a communication system according to an embodiment of the present invention, schematically showing examples of terminal devices and network devices. As shown in Figure 1, the communication system 100 may include a first TRP 101, a second TRP 102, and a terminal device 103. Here, the first TRP 101 and the second TRP 102 may be network devices. For the sake of explanation, Figure 1 is simply an example illustrating two network devices and one terminal device, but embodiments of the present invention are not limited thereto.

[0036] In embodiments of the present invention, existing services or services that can be implemented in the future can be provided between the first TRP 101, the second TRP 102, and the terminal device 103. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC).

[0037] Rel-16 standardizes PDSCH transmission based on mTRP, and Rel-17 standardizes PDCCH, PUSCH, and PUCCH transmission based on mTRP. mTRP transmission includes mTRP transmission based on sDCI (single DCI) and mTRP transmission based on mDCI (multiple DCI). sDCI mTRP is suitable when one DCI schedules the uplink and downlink transmissions of two TRPs and backhauling between TRPs is preferable. mDCI mTRP is suitable when two TRPs use two DCIs to schedule the uplink and downlink transmissions of their respective TRPs and backhauling between TRPs is preferable.

[0038] Figure 1 shows an example of PDSCH reception by terminal device 103 in an mTRP scenario. For example, the terminal device receives two PDSCHs from the first TRP 101 and the second TRP 102 in the form of spatial division, time division, or frequency division. The terminal device receives the two PDSCHs based on pseudo-collocation information provided by TCI state 1 corresponding to the first TRP 101 and TCI state 2 corresponding to the second TRP 102, respectively.

[0039] As shown in Figure 1, taking the time-division multiplexing format as an example, terminal device 103 receives PDSCH in PDSCH repetition. For example, it receives the first TRP 101 transmission in the first slot and transmits to the second TRP 102 in the second slot, and so on for other cases.

[0040] Rel-17 introduces unified TCI. Downlink TCI states or joint TCI states can provide pseudo-collocation information for at least UE-specific PDSCH reception and / or UE-specific PDCCH reception. Uplink TCI states or association TCI states can provide pseudo-collocation information for at least UE-specific PUSCH transmission and / or UE-specific PUCCH transmission. The unified TCI scheme in Rel-17 applies to sTRP scenarios with only two transmission links, uplink and downlink, where, for example, at least one set of TCI states is activated in the MAC CE, indicating the corresponding TCI states and which set of activated TCI states is used in the TCI field of the DCI. For example, the MAC CE can activate up to eight sets of TCI states (hereinafter referred to as TCI groups), each corresponding to a TCI codepoint (TCI codepoint) corresponding to the TCI field of the DCI. Each set of TCI states has one or two TCI states. If the value of the unifiedTCI-StateType field is "separate", a TCI group can have two TCI states, each providing a QCL reference for both uplink and downlink transmissions. A TCI group can have only one DL TCI state, which provides a QCL reference for downlink transmissions. A TCI group can have only one UL TCI state, which provides a QCL reference for uplink transmissions. If the value of the unifiedTCI-StateType field is "joint", a TCI group can have only one joint TCI state, which provides a QCL reference for both uplink and downlink transmissions.

[0041] Figure 2 is a schematic diagram of an example of the MAC CE format according to an embodiment of the present invention.

[0042] Figure 2 shows the MAC CE format for activating / deactivating unified TCI states in Rel-17. In the figure, Pi (i=1,2,…,8) indicates the activation / deactivation of the i-th group of TCI states. Each group of TCI states has one or two TCI states. For example, a value of Pi "0" indicates that there is one TCI state in the corresponding byte (Octet, OCT), corresponding to, for example, one "downlink / joint TCI state" or one "uplink TCI state". A value of Pi "1" indicates that there are two TCI states (i.e., one DL TCI state and one UL TCI state). For example, the method for determining Pi and the corresponding byte Oct can refer to the prior art, and the present invention is not limited thereto. For example, the D / U field in Figure 2 indicates whether the TCI state corresponding to the TCI state ID of the row in which it is located is a "downlink / joint TCI state" or an "uplink TCI state". For example, if the value of "D / U" is "1", it indicates that the TCI state corresponding to the TCI state ID of the row in which it is located is a "downlink / joint TCI state", and if the value of "D / U" is "0", it indicates that the TCI state corresponding to the TCI state ID of the row in which it is located is an "uplink TCI state".

[0043] For example, "Pi(i=1,2,…,8) indicates the activation / deactivation of the TCI state of group i" can be expressed as "Pi(i=1,2,…,8) indicates that TCI codepoint i has one or two TCI states." Here, "TCI codepoint" refers to the content indicated by the TCI field in DCI. For example, in MAC CE, up to eight TCI groups (shown as P1-P8 in Figure 2) are activated. Correspondingly, the TCI field in DCI format 1_1 or DCI format 1_2 has a bit width of 3 bits and has eight possible coded values: 000, 001, 010, 011, 100, 101, 110, 111. Each coded value can be called one TCI codepoint, and the eight coded values ​​have eight TCI codepoints, i.e., TCI codepoint 1, TCI codepoint 2, ..., TCI codepoint 8. This corresponds one-to-one with the eight TCI groups in MAC CE. For example, the TCI state indicated by "TCI codepoint" corresponds to one TCI state or two TCI states indicated by P1.

[0044] The Rel-17 unified TCI applies only to the sTRP scenario. Given the importance of mTRP, a unified TCI mechanism corresponding to the mTRP scenario needs to be designed. 3GPP® will standardize the unified TCI for mTRP in Rel-18. Currently, the unified TCI for mTRP has been selected as one of the Rel-18 projects, and standardization in Rel-18 is underway.

[0045] Figure 3A is a schematic diagram of an example of an uplink in an mTRP scenario according to an embodiment of the present invention. Figure 3B is a schematic diagram of an example of an uplink in an mTRP scenario according to an embodiment of the present invention.

[0046] According to the inventors' findings, in the unified TCI scenario in the mTRP scenario in Rel-18, for UE 103, there are downlinks and uplinks corresponding to each TRP, and a total of four links exist between the UE and the two TRPs. For example, between UE 103 and the first TRP 101, there are downlinks (hereinafter referred to as the first downlink) and uplinks (hereinafter referred to as the first uplink), respectively, and between UE 103 and the first TRP 102, there are downlinks (hereinafter referred to as the second downlink) and uplinks (hereinafter referred to as the second uplink), respectively, and QCL references are provided for the transmission of these corresponding links.

[0047] In mTRP transmission, when the upper-layer parameter unifiedTCI-StateType is set to "separate", the TCI states corresponding to the four links are {first downlink TCI state (DL TCI state 1), first uplink TCI state (UL TCI state 1), second downlink TCI state (DL TCI state 2), and second uplink TCI state (unifiedTCI-StateType)}, as shown in Figure 3A, and can provide QCL references to the first downlink, first uplink, second downlink, and second uplink, respectively. In this scenario, one TCI codepoint in DCI must correspond to one of the four activated TCI states, or to a portion of these four activated TCI states. That is, the current MAC CE cannot provide a mechanism to activate / deactivate TCI states under this scenario. In other words, the current TCI state activation / deactivation method cannot support TCI state activation / deactivation under this scenario.

[0048] In mTRP transmission, when the upper-layer parameter unifiedTCI-StateType is set to "joint", the TCI states for the four links are {first joint TCI state (Joint TCI state 1), second joint TCI state (Joint TCI state 2)}, as shown in Figure 3B. Here, the first joint TCI state provides QCL references for the first downlink and the first uplink, and the second joint TCI state provides QCL references for the second downlink and the second uplink. In this scenario, it is necessary to correspond to two activated joint TCI states corresponding to one TCI codepoint in one DCI, or to a portion of these two activated joint TCI states. That is, the current TCI state activation / deactivation method cannot support TCI state activation / deactivation in this scenario.

[0049] Therefore, existing TCI state activation / deactivation methods cannot support unified TCI state activation / deactivation in mTRP scenarios. Consequently, how to support unified TCI state activation / deactivation in mTRP scenarios is an urgent issue that needs to be resolved.

[0050] In view of at least one of the above-mentioned problems, embodiments of the present invention provide a data receiving device, a data transmitting device, and a method.

[0051] <Example 1> Embodiments of the present invention provide a data reception method, which is applicable to terminal equipment.

[0052] Figure 4 is a schematic diagram of an example of a data receiving method according to an embodiment of the present invention. As shown in Figure 4, the method includes the following steps.

[0053] Step 401: The terminal device receives first instruction information, which indicates at least one unified TCI state set of multiple transmission and reception points (TRPs).

[0054] Step 402: The terminal device determines the TCI state in the at least one unified TCI state set based on the first instruction information.

[0055] This makes it possible to accurately represent, with less complexity, at least one set of unified TCI states in a multi-TRP scenario and the TCI states within that set of unified TCI states.

[0056] Figure 4 above merely provides a schematic representation of an embodiment of the present invention, but the present invention is not limited thereto. For example, the execution order between various steps may be appropriately adjusted, or several other steps may be added, or several steps may be removed. Those skilled in the art can make appropriate modifications based on the above description and are not limited to the description in Figure 4.

[0057] In some embodiments, the expression "represents at least one unified TCI state set of multiple TRPs" may be replaced with "activate / deactivate at least one unified TCI state set of multiple TRPs," and the expression "determine a TCI state within at least one unified TCI state set" may be replaced with "decide to activate / deactivate a TCI state within at least one unified TCI state set."

[0058] In some embodiments, the terms "PUSCH," "PUSCH transmission," and "PUSCH transmission" are interchangeable. The terms "PDSCH," "PDSCH transmission," and "PDSCH transmission" are interchangeable. "DL TCI state" or "UL TCI state" may be represented by "joint DL / UL TCI state" or by "separate DL / UL TCI state." "DL TCI state" may be "separate DL TCI state" or "joint TCI state," and "UL TCI state" may be "separate UL TCI state" or "joint TCI state." The above are merely examples, and embodiments of the present invention are not limited thereto.

[0059] In some embodiments, at least one set of unified TCI states for a single transmit / receive point (TRP) is: First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), The first downlink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), First uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First uplink transmission configuration instruction state (TCI state), Second uplink transmission configuration instruction state (TCI state), First Joint Transmission Configuration Instruction State (TCI state), Second Joint Transmission Configuration Instruction State (TCI state), The first joint transmission configuration instruction state (TCI state), or, It includes at least one combination of transmission configuration instruction states from the second joint transmission configuration instruction state (TCI state).

[0060] In some embodiments, the method further includes the step of receiving a second instruction information, where the second instruction information indicates the applied transmission configuration instruction state (TCI state) based on the transmission configuration instruction state (TCI state) determined by the first instruction information.

[0061] In some embodiments, the first instruction information is carried by a media access control element (MAC CE). The second instruction information is carried by downlink control information (DCI).

[0062] In some embodiments, when the value of the upper-level parameter unifiedTCI-StateType is "separate", one TCI codepoint corresponding to the first instruction information (e.g., MAC CE) is "first downlink TCI state, second downlink TCI state, first uplink TCI state, second uplink TCI state; first downlink TCI state, second downlink TCI state, first uplink TCI state; first downlink TCI state, second downlink TCI state, second uplink TCI state; first downlink TCI state, second downlink TCI state; first downlink TCI state, first uplink TCI state, second uplink TCI state; first downlink TCI state, first uplink TCI state; first downlink TCI state, second uplink TCI state); first downlink TCI state; second downlink TCI state, first uplink TCI If the value of the upper-level parameter TCI state is "TCI state", then one TCI state corresponding to the first instruction information (e.g., TCI state) can activate / deactivate at least one of the combinations "first joint TCI state, second joint TCI state); first joint TCI state; second joint TCI state".

[0063] The following provides a detailed explanation of the TCI states that require application.

[0064] For example, the first instruction information can be expressed as "MAC CE for unified TCI state activation / deactivation," and for example, the first instruction information may indicate eight sets of TCI states (to be activated), or the first instruction information can be expressed as indicating that eight sets of unified TCI states have been activated, and the first instruction information further indicates the TCI states specifically included in each set of TCI states (the specific content of the instructions regarding the first instruction information will be described in detail later in this specification). Based on the fact that eight sets of TCI states have been activated by the MAC CE, the second instruction information can indicate to the terminal device which TCI state is specifically applied, and for example, which set of the eight sets of activated TCI states is indicated by the three bits of the TCI field of the DCI, where each of these three bits corresponds to a single TCI code point (unified TCI state).

[0065] For example, "000" (which can also be expressed as "TCI codepoint 1") is indicated by the TCI field of DCI and means that the terminal device applies the first set of TCI states that were activated in MAC CE.

[0066] For each set of TCI states, it is also preferable to express each "unified TCI state set," where each "unified TCI state set" may comprise one of the 18 possible combinations of TCI states described above.

[0067] In some embodiments, when the value of the upper-level parameter unifiedTCI-StateType is "separate", it must be shown that the TCI state is {first downlink TCI state (DL TCI state 1), second downlink TCI state (DL TCI state 2), first uplink TCI state (UL TCI state 1), second uplink TCI state (unifiedTCI-StateType)}, for example as shown in Figure 3A. When the value of the upper-level parameter separate is "TCI state", it must be shown that the TCI state is {first joint DL TCI state 1 (TCI state), second joint DL TCI state 2 (TCI state)}, for example as shown in Figure 3B.

[0068] For example, for each "unified TCI state set," a 4-bit bitmap is used to indicate whether each link in the "unified TCI state set" has a corresponding TCI state. For instance, the 4 bits of the bitmap may correspond to {first downlink TCI state, second downlink TCI state, first uplink TCI state, second uplink TCI state}, or the first two bits of the 4 bits may indicate {first joint TCI state, second joint TCI state}. For example, a value of "1" in one bit of the 4 bits indicates that a corresponding TCI state exists, while a value of "0" in one bit of the 4 bits indicates that a corresponding TCI state does not exist.

[0069] For example, if the value of the upper-level parameter unifiedTCI-StateType is "separate", the value of the 4-bit bitmap is {1100}, and the combination of TCI states corresponding to the "unified TCI state set" it indicates is "first downlink TCI state, second downlink TCI state". For example, if the value of the upper-level parameter unifiedTCI-StateType is "joint", the value of the 4-bit bitmap is {1100}, and the combination of TCI states corresponding to the "unified TCI state set" it indicates is {first joint unifiedTCI-StateType, second joint separate}. For example, if the value of the upper-level parameter unifiedTCI-StateType is "separate", the value of the 4-bit bitmap is {0100}, and the combination of TCI states corresponding to the "unified TCI state set" it indicates is "second downlink TCI state". When the value of the upper-level parameter unifiedTCI-StateType is "joint", the value of the 4-bit bitmap is {0100}, and the combination of TCI states corresponding to the "unified TCI state set" indicated by it is {second joint TCI state}.

[0070] In some embodiments, the first instruction information further indicates a specific TCI state in each “unified TCI state set,” for example, the first instruction information may, in addition to indicating the 4-bit bitmap, further indicate the TCI state corresponding to each bit in the 4-bit bitmap.

[0071] The following describes, with reference to an example, how the first instruction information indicates, for example, at least one "unified TCI state set" from the above 4-bit bitmap and each "unified TCI state set," and how it indicates the TCI state corresponding to each bit in the 4-bit bitmap.

[0072] In some embodiments, the first instruction information indicates the at least one set of unified TCI states via a first field. In some embodiments, the at least one set of unified TCI states is indicated via a bitmap of the first field. In some embodiments, the bitmap of the first field is arranged in a row-first-column order, or a column-first-row order.

[0073] In some embodiments, if the first subfield of the bitmap of the first field is a first value, the first instruction information indicates that there is no corresponding Transmission Configuration Instruction (TCI state) in the second field corresponding to the first subfield of the bitmap of the first field. If the first subfield of the bitmap of the first field is a second value, the first instruction information indicates that there is a corresponding Transmission Configuration Instruction (TCI state) in the second field corresponding to the first subfield of the bitmap of the first field.

[0074] For example, if the "first subfield of the first field" occupies one or more bits of the first instruction information, for example, if the "first subfield of the first field" occupies one bit, the "first value" may be "0" and the "second value" may be "1". If the "first subfield of the first field" occupies four bits, the "first value" may be "0000" and the "second value" may be any value other than "0000". Preferably, if the "first subfield of the first field" occupies one bit, the "first value" may be "1" and the "second value" may be "0". If the "first subfield of the first field" occupies multiple bits, the "first value" may be "1111" and the "second value" may be any value other than "1111". The present invention is not limited thereto.

[0075] Figure 5A is a schematic diagram of an example of the first instruction information according to an embodiment of the present invention. Figure 5B is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. For example, in Figure 5A, the bitmap of the first field is arranged in the order of rows first, followed by columns. For example, in Figure 5B, the bitmap of the first field is arranged in the order of columns first, followed by rows.

[0076] As shown in Figure 5A or Figure 5B, the entire "Bi,j" field corresponds to the first subfield, for example, the value range of "i" is "1 to 8", and corresponds to each of "i" sets of TCI states or sets of "i" unified TCI states, and Bi,1,Bi,2,Bi,3,Bi,4 may correspond to the i-th TCI codepoint. For example, the value range of "j" in "Bi,j" is "1 to 4", and corresponds sequentially to {first downlink TCI state, second downlink TCI state, first uplink TCI state, second uplink TCI state} or {first joint TCI state, second joint TCI state}, respectively. Here, each of "Bi,1,Bi,2,Bi,3,Bi,4" corresponds to the first subfield in the bitmap of the first field. Here, the entire field showing the TCI state identifier constitutes a second field, for example, field Oct 8 to field Oct N+7 shown in Figure 5A or Figure 5B, where N means, for example, the number of TCI states corresponding to the first TRP and the second TRP, and for example, the maximum value of N is 32, and the present invention is not limited thereto.

[0077] In some embodiments, the first field corresponds to at least one Transmission Configuration Indicator Code Point (TCI codepoint), where the Transmission Configuration Indicator State (TCI state) corresponding to one Transmission Configuration Indicator Code Point (TCI codepoint) is determined by the Transmission Configuration Indicator State (TCI state) corresponding to at least one first subfield in the first field.

[0078] For example, the first field shown in Figure 5A or Figure 5B corresponds to eight TCI code points, where the TCI state corresponding to one TCI code point i is determined by the TCI states corresponding to four first subfields of the first field, for example, Bi,1 to Bi,4 correspond to the TCI state of TCI code point i.

[0079] For example, taking the i-th TCI group as an example, Table 1 shows all possible combinations of TCI states from Bi,1 to Bi,4.

[0080] [Table 1] For example, the correspondence between Bi,1, Bi,2, Bi,3, Bi,4 and the first downlink / joint TCI state, the second downlink / joint TCI state, the first uplink TCI state, and the second uplink TCI state may be adjusted, and if adjusted, the TCI order in the third column of the table will also be adjusted. The present invention is not limited thereto.

[0081] In some embodiments, if the first subfield of the bitmap of the first field is a second value, the second field in the first instruction information corresponding to the first subfield of the bitmap of the first field is read, where the first subfield of the second field indicates the identification information index of the Transmission Configuration Instruction State (TCI state).

[0082] For example, the first subfield of the second field represents the TCI state identification index (TCI state ID) corresponding to "Bi,1,Bi,2,Bi,3,Bi,4". For example, the first subfield of the second field can use 7 bits to represent the TCI state ID (for example, representing the upper-layer parameter "TCI-StateId"), and the remaining bits of the second field can be set as redundant bits (R). For example, as shown in Figure 5A, the first subfield of the second field starts from the second bit of the second field, and the first bit at the beginning of the second field is set as a redundant bit. For example, the first subfield of the second field occupies an additional 6 bits, which are not illustrated here.

[0083] For example, the TCI State ID field in Figure 5A or Figure 5B corresponds one-to-one with the bits whose value is "1" in the "B1,1,B1,2,B1,3,B1,4,B2,1,B2,2,B2,3,B2,4,…,B8,1,B8,2,B8,3,B8,4 sequence" (hereinafter referred to as the {Bi,j} sequence). For example, the first bit whose value is "1" in the "B1,1,B1,2,B1,3,B1,4,B2,1,B2,2,B2,3,B2,4,…,B8,1,B8,2,B8,3,B8,4 sequence" corresponds to the TCI State ID. Corresponding to 1, the second bit whose value is "1" in the "B1,1,B1,2,B1,3,B1,4,B2,1,B2,2,B2,3,B2,4,…,B8,1,B8,2,B8,3,B8,4 sequence" corresponds to TCI State ID 2, and so on. For example, in the sequence "B1,1,B1,2,B1,3,B1,4,B2,1,B2,2,B2,3,B2,4,…,B8,1,B8,2,B8,3,B8,4", if the values ​​of "B1,1,B1,2,B1,3,B1,4" are "0000" and the values ​​of "B2,1,B2,2,B2,3,B2,4" are "0100", then code point 2, which corresponds to "B2,1,B2,2,B2,3,B2,4", corresponds to the first TCI state, i.e., TCI state 1.

[0084] For example, if "Bi,1,Bi,2,Bi,3,Bi,4" is the first value "0000", the second field corresponding to "Bi,1,Bi,2,Bi,3,Bi,4" will not have a TCI state corresponding to "Bi,1,Bi,2,Bi,3,Bi,4". For example, if "Bi,1,Bi,2,Bi,3,Bi,4" is the second value (a value other than "0000"), the second field corresponding to "Bi,1,Bi,2,Bi,3,Bi4" will have a TCI state corresponding to "Bi,1,Bi,2,Bi,3,Bi,4".

[0085] Figure 5C is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. As shown in Figure 5C, when the value of the upper-level parameter unifiedTCI-StateType is "separate", the value of the first subfield "B1,1 to B1,4" in the first field is "1000", and the combination of activated TCI states corresponds to the "first downlink TCI state" in the row where number 8 is located in Table 1 above, and furthermore, TCI state ID 1 corresponding to the "first downlink TCI state" is obtained from the first subfield "TCI state ID 1(B1,1)" on the second field (Oct 7). Here, (B1,1) in "TCI state ID 1(B1,1)" in Figure 5C is the correspondence between TCI state ID and Bi,j for a better example and has no physical meaning, i.e., the TCI state ID corresponding to B1,1 is TCI state ID 1. For example, the value of the first subfield "B2,1 to B2,4" in the first field is "0100", and the activated TCI state combination corresponds to the "second downlink TCI state" in the row where number 12 is located in Table 1 above. Furthermore, the TCI state ID 2 corresponding to the "second downlink TCI state" is obtained from the first subfield "first downlink TCI state(B2,2)" on the second field (Oct 8), where (B2,2) in "TCI state ID 2(B2,2)" also has no physical meaning. For example, the specific numerical values ​​and contents of other fields such as B3,1 in Figure 5B are not listed. For example, X in Figure 5C is an integer less than or equal to N (corresponding to N in Figure 5A) which represents the maximum index of the corresponding TCI state ID within the currently activated TCI group.

[0086] For example, the second instruction information indicates that if the TCI field shows "000" (corresponding to TCI codepoint 1), the terminal device should apply the "first downlink TCI state" and the corresponding "TCI state ID 1 (B1,1)", for example, the TCI state corresponding to the downlink of the first TRP.

[0087] This makes it possible to determine at least one set of unified TCI states across multiple TRP scenarios, and the TCI states within that set of unified TCI states.

[0088] For example, other fields shown in Figures 5A, 5B, and 5C, such as "Serving Cell ID," "DL BWP ID," "UL BWP ID," and "Pi," may refer to prior art, and the present invention is not limited to these. Furthermore, in the present invention, the first instruction information may include all the fields shown in Figures 5A, 5B, and 5C, or it may not include some of the fields shown in Figures 5A, 5B, and 5C. For example, the first instruction information of the present invention may not include the "Pi" field, and the present invention is not limited to these and is not listed here.

[0089] In some embodiments, the first instruction information indicates the at least one set of unified TCI states via the third and fourth fields. In some embodiments, the at least one set of unified TCI states is jointly indicated by the bitmap of the third field and the first subfield of the fourth field.

[0090] In some embodiments, the bitmap of the third field is arranged in the order of rows first, then columns, or columns first, then rows, and the first subfield of the fourth field is at least one start bit of the fourth field, as described in Appendix 11.

[0091] For example, the "first subfield of the third field" and the "first subfield of the fourth field" occupy one or more bits of the first instruction information. For example, if the "first subfield of the third field" occupies one bit, the "first value" may be "0" and the "second value" may be "1". If the "first subfield of the third field" occupies three bits, the "first value" may be "000" and the "second value" may be any value other than "000". Preferably, if the "first subfield of the third field" occupies one bit, the "first value" may be "1" and the "second value" may be "0". If the "first value" occupies three bits, the "first value" may be "111" and the "second value" may be any value other than "111". The present invention is not limited thereto.

[0092] Figure 6A is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. Figure 6B is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. For example, in Figure 6A, the bitmap of the third field is arranged in the order of rows first, followed by columns. For example, in Figure 6B, the bitmap of the third field is arranged in the order of columns first, followed by rows.

[0093] For example, as shown in Figure 6A or Figure 6B, the Bi and j of fields Oct 4 to Oct 6 constitute the third field, and fields Oct 7 to Oct N+6 constitute the fourth field. Also, for example, as shown in Figure 6A or Figure 6B, some of the start bits of each field Oct 7 to Oct N+6 constitute the "first subfield of the fourth field". Here, the "first subfield of the fourth field" occupies only the start bits of fields Oct 7 to Oct 14, and the start bits of fields Oct 15 to Oct N+6 are still filled with redundant bits (R), where the bits that are filled (R) and the bits other than the start bits of each field Oct 4 to Oct N+6 constitute the "second subfield of the fourth field".

[0094] In some embodiments, if the first subfield in the bitmap of the third field is a first value, the first instruction information indicates that there is no corresponding TCI state in the second subfield of the fourth field corresponding to the first subfield in the bitmap of the third field; if the first subfield in the bitmap of the third field is a second value, the first instruction information indicates that there is no corresponding TCI state in the second subfield of the fourth field corresponding to the first subfield in the bitmap of the third field. And / or, if the first subfield of the fourth field is a first value, the first instruction information indicates that there is no corresponding TCI state in the second subfield of the fourth field corresponding to the first subfield of the fourth field; and if the first subfield of the fourth field is a second value, the first instruction information indicates that there is a corresponding TCI state in the second subfield of the fourth field corresponding to the first subfield of the fourth field.

[0095] In some embodiments, if the first subfield in the bitmap of the third field is a second value, and / or if the first subfield of the fourth field is a second value, the second subfield of the fourth field corresponding to the first subfield in the bitmap of the third field is read, and / or the second subfield of the fourth field corresponding to the first subfield of the fourth field is read. Here, the second subfield of the fourth field indicates the identification information index of the TCI state.

[0096] For example, if the first subfield of the bitmap of the third field in Figure 6A, for example "B1,j" (j=1~3), is the first value "000", then the second subfield of the fourth field corresponding to "B1,j" does not have a corresponding TCI state. If "B1,j" is a value other than the second value "000", then the second subfield of the fourth field corresponding to "B1,j" does have a corresponding TCI state. Then, the second subfield of the fourth field corresponding to "B1,j" is read, and this second subfield of the fourth field indicates the identification information index of the TCI state corresponding to "B1,j". And / or, if the first subfield of the fourth field, "B1,4", is the first value "0", then the second subfield of the fourth field corresponding to "B1,j" does not have a corresponding TCI state. If "B1,4" is the second value "1", then the second subfield of the fourth field corresponding to "B1,j" contains the corresponding TCI state. Then, the second subfield of the fourth field corresponding to "B1,4" is read, and this second subfield of the fourth field indicates the identification information index of the TCI state corresponding to "B1,4".

[0097] In some embodiments, the third and fourth fields correspond to at least one TCI code point, where the TCI state corresponding to one TCI code point is determined by the TCI state corresponding to the first subfield of the third field and / or the TCI state corresponding to the first subfield of the fourth field.

[0098] For example, as in the above embodiment, Bi,1 to Bi,4 correspond to TCI code point i. For example, the specific values ​​of "Bi,j" and "TCI state ID" can be found in the examples in Figures 5A to 5C above, but the explanation is omitted here.

[0099] As shown in Figure 6A or Figure 6B, this differs from the examples in Figures 5A to 5C described above in that Bi,4 from Bi,1 to Bi,4 in each group is set as the first subfield of the fourth field. This further reduces the overhead by 1 byte.

[0100] For example, if the total number of TCI state groups activated in the current first instruction information is N ≥ 8, then all 8 Bi,4 values ​​can be fully indicated. If the total number of TCI states activated in the current MAC CE is N < 8, then only the first N Bi,4 values ​​need to be indicated, that is, in the order B1,4,B2,4,...,BN,4.

[0101] Figure 6C is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. As shown in Figure 6C, the upper layer parameters are explained as follows, for example, that when the value of the upper layer parameter unifiedTCI-StateType is "separate", the first subfield in the third field and the first subfield in the fourth field "B1, 1 to B1, 4" are "1001", and the first subfield in the third field and the first subfield in the fourth field "B2, 1 to B2, 4" are "1000". The combination of activated TCI states in which the value of the first subfield in the third field and the first subfield in the fourth field "B1, 1 to B1, 4" is "1001" corresponds to "first downlink TCI state, second uplink TCI state" in row 7 of Table 1 above. Then, TCI state ID 1 corresponding to the "first downlink TCI state" is obtained from the second subfield "TCI state ID 1(B1,1)" on the fourth field (Oct 7). Since the value of the first subfield B1,4 of the fourth field is "1", the corresponding second subfield "TCI state ID 2(B1,4)" on the fourth field (Oct 8) is read to obtain TCI state 2 corresponding to the "second uplink TCI state". The same applies to other cases, and for example, the specific numerical values ​​and contents of other fields such as B3,1 in Figure 6C are not listed. Similar to Figure 5C, (B1,1) in "TCI state ID 1(B1,1)" shown in Figure 6C corresponds only to the relationship between TCI state ID and Bi,j, and the identifier of the corresponding TCI state is still "TCI state ID 1". For example, X in Figure 6C is an integer less than or equal to N (corresponding to N in Figure 6A) that represents the maximum index of the corresponding TCI state ID within the currently activated TCI group.

[0102] For example, the second instruction information indicates that if the TCI field shows "000" (corresponding to TCI codepoint 1), the terminal device should apply the "first downlink TCI state, second uplink TCI state" and the corresponding "TCI state ID 1 (B1,1), TCI state ID 2 (B1,4)," for example, the TCI state corresponding to the downlink of the first TRP.

[0103] This makes it possible to determine at least one set of unified TCI states across multiple TRP scenarios, and the TCI state within that set of unified TCI states.

[0104] In some embodiments, the first instruction information indicates the at least one unified TCI state set via the fifth and sixth fields.

[0105] In some embodiments, if the first subfield in the fifth field bitmap is a first value, the first instruction information indicates that the seventh field corresponding to the first subfield in the fifth field bitmap has a first number of transmission configuration instruction states (TCI states), and if the first subfield in the fifth field bitmap is a second value, the first instruction information indicates that the seventh field corresponding to the first subfield in the fifth field bitmap has a second number of transmission configuration instruction states (TCI states).

[0106] In some embodiments, a seventh field in the first instruction information that corresponds to a first subfield in the bitmap of the fifth field is read. Here, the first subfield of the seventh field indicates the uplink direction, downlink direction, or joint state, and the second subfield of the seventh field indicates the identification information index of the transmission configuration instruction state (TCI state).

[0107] In some embodiments, if the first subfield in the sixth field bitmap is a first value, the first instruction information indicates that the eighth field corresponding to the first subfield in the sixth field bitmap has a first number of transmission configuration instruction states (TCI states), and if the first subfield in the sixth field bitmap is a second value, the first instruction information indicates that the eighth field corresponding to the first subfield in the sixth field bitmap has a second number of transmission configuration instruction states (TCI states).

[0108] In some embodiments, the first and second subfields of the eighth field, which correspond to the first subfield in the bitmap of the sixth field in the first instruction information, are read. Here, the first subfield of the eighth field indicates the uplink direction, downlink direction, or joint state, and the second subfield of the eighth field indicates the identification information index of the transmission configuration instruction state (TCI state).

[0109] For example, the "sixth field" and "eighth field" of the present invention are new fields in an existing MAC CE, such as the new fields "sixth field" and "eighth field" in the MAC CE shown in Figure 2. The "fifth field" and "seventh field" may reuse, for example, the Pi field and the corresponding TCI state ID field in the MAC CE shown in Figure 2. The present invention is not limited thereto.

[0110] For example, the "first subfield of the fifth field" and the "first subfield of the sixth field" occupy one or more bits in the first instruction information. If the "first subfield of the fifth field" and the "first subfield of the sixth field" occupy one bit, the "first value" may be "0" and the "second value" may be "1". For example, the "first number" may be "1" and the "second number" may be "2", and the present invention is not limited thereto.

[0111] Figure 7A is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. Figure 7B is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention.

[0112] For example, as shown in Figure 7A or Figure 7B, the entire fields P1 to P8 correspond to the "fifth field," and the entire fields Q1 to Q8 correspond to the "sixth field," where each bit "Pi" in P1 to P8 corresponds to the "first subfield of the fifth field," and each bit "Qi" in Q1 to Q8 corresponds to the "first subfield of the sixth field."

[0113] For example, the fields Oct 5 to Oct N+4 shown in Figure 7A are the "seventh field," and the fields Oct N+5 to Oct N+M+4 are the "eighth field," where N represents, for example, the total number of TCI states corresponding to the first TRP, and M represents, for example, the total number of TCI states corresponding to the second TRP. For example, the maximum value of N is 32, and the present invention is not limited thereto. Here, the fields of the "seventh field" and the "eighth field" are in the order P1 to P8, followed by Q1 to Q8. Alternatively, the fields Oct 5, Oct 6, Oct N+M+1, Oct N+M+2 shown in Figure 7B are the "seventh field," and the fields Oct 7, Oct 8, Oct N+M-1, Oct N+M are the "eighth field," where the fields of the "seventh field" and the "eighth field" are in the order P1 to Q1, followed by P2 to Q2. For example, N=M=8. Note that N and M may be other values, but the present invention is not limited to these.

[0114] For example, as shown in Figures 7A and 7B, the start bit ("D / U") of each field from Oct 5 to Oct N+M+4 corresponds to the "first subfield of the seventh field" or the "first subfield of the eighth field," and the other bits ("TCI state ID") of each field from Oct 5 to Oct N+M+4, other than the start bit, may be 7 bits in size, for example, corresponding to the "second subfield of the seventh field" or the "second subfield of the eighth field."

[0115] In some embodiments, the "first subfield of the seventh field" indicates the uplink direction, downlink direction, or joint state, and the "second subfield of the seventh field" indicates an identification information index of the TCI state. For example, the "first subfield of the eighth field" indicates the uplink direction, downlink direction, or joint state, and the "second subfield of the eighth field" indicates an identification information index of the TCI state.

[0116] For example, the first subfield of the seventh field or the first subfield of the eighth field corresponds to a value of "1" in the "D / U" field and indicates one "downlink / joint TCI state". The first subfield of the seventh field or the first subfield of the eighth field corresponds to a value of "0" in the "D / U" field and indicates one "uplink TCI state".

[0117] For example, if the first subfield in the bitmap of the fifth field is the first value, then the value of P1 is "0", indicating that the seventh field corresponding to P1 has one TCI state, for example, one downlink / joint TCI state or one uplink TCI state. Then, the second subfield of the seventh field is read to obtain the TCI state ID corresponding to "one downlink / joint TCI state or one uplink TCI state × 1". If the first subfield in the bitmap of the fifth field is the second value, then the value of P1 is "1", indicating that the seventh field corresponding to P1 has two TCI states, for example, one downlink TCI state and one uplink TCI state. Then, the second subfield of the seventh field is read to obtain the TCI state corresponding to "one downlink TCI state and one uplink TCI state".

[0118] In some embodiments, if the first subfield in the bitmap of the sixth field is a first value, for example, if the value of Q1 is "0", it indicates that the eighth field corresponding to Q1 has one TCI state, for example, one downlink / joint TCI state or one uplink TCI state. Then, the second subfield of the eighth field is read to obtain the TCI state ID corresponding to "one downlink / joint TCI state or one uplink TCI state". If the first subfield in the bitmap of the sixth field is a second value, for example, if the value of Q1 is "1", it indicates that the eighth field corresponding to Q1 has two TCI states, one downlink TCI state and one uplink TCI state. Then, the second subfield of the eighth field is read to obtain the TCI states corresponding to "one downlink TCI state and one uplink TCI state". For example, if the value of Q1 is "0", then "there is one TCI state in the eighth field" can also be written as "add one TCI state field to the eighth field relative to the seventh field", but the present invention is not limited to this.

[0119] For example, Pi and Qi jointly represent the i-th group TCI state corresponding to TCI codepoint i, for example, Pi corresponds to the {first downlink TCI state, first uplink TCI state} or {first joint TCI state} of the first TRP101, and Qi corresponds to the {second downlink TCI state, second uplink TCI state} or {second joint TCI state} of the second TRP101.

[0120] Figure 7C is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. As an example, the fields of the "seventh field" and the "eighth field" are sorted in the order of P1 to P8 followed by Q1 to Q8. For example, one example is when P1 to P8 are "10000000" in order, and Q1 to Q8 are "01000000" in order. Here, if the value of P1 is "1", then if the first "first subfield of the seventh field" (start bit of field Oct 5) is "1", the corresponding "second subfield of the seventh field" is "TCI state ID 1 (P1_DL)" corresponding to one downlink TCI state of P1, and if the second "first subfield of the seventh field" (start bit of field Oct 6) is "0", then the corresponding "second subfield of the seventh field" is "TCI state ID 2 (P1_UL)" corresponding to one uplink TCI state of P1. If the value of Q1 is "0", then if the "first subfield of the eighth field" (start bit of field Oct 14) is "1", then the corresponding "second subfield of the eighth field" is "field Oct 10 (Q1_DL)" corresponding to one downlink TCI state of Q1. As shown in Figure 7C, P1 and Q1 jointly represent the "first downlink TCI state, second downlink TCI state, and first uplink TCI state," that is, "Bi,i,Bi,2,Bi,3,Bi,4" in Table 1 corresponds to "1101." Similar to Figure 5C, the (P1_DL) in "TCI state ID 1(P1_DL)" shown in Figure 7C corresponds only to the relationship between the TCI state ID and Pi and Pi's uplink / downlink TCI state, and the identifier of the corresponding TCI state is still "TCI state ID 1."

[0121] For example, the second instruction information instructs the terminal device to apply the "first downlink TCI state, second downlink TCI state, first uplink TCI state" and the corresponding "TCI state ID 1 (P1_DL), TCI state ID 2 (P1_UL), TCI state ID 10 (Q1_DL)" if the TCI field indicates "000" (corresponding to TCI codepoint 1).

[0122] Figure 7D is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. For example, in the fields shown in Figure 7D, fields such as Oct 5, Oct 6, Oct 9, Oct 12, Oct N+M+2, and Oct N+M+3 correspond to the "seventh field," and fields such as Oct 7, Oct 8, Oct 10, Oct 11, Oct 13, and Oct N+M+4 correspond to the "eighth field." Here, the fields of the "seventh field" and the "eighth field" are ordered in the order P1, Q1, P2, and Q2. For example, in Figure 7D, P1, P2, P3, and P8 have values ​​of 1, 0, 0, and 1 respectively. Therefore, corresponding to the first TRP 101, two TCI states are activated at TCI codepoint 1, TCI codepoint 2, TCI codepoint 3, and TCI codepoint 8, respectively. The corresponding TCI state IDs are "TCI state ID 1 and TCI state ID 2", "TCI state ID 5", "TCI state ID 8", and "TCI codepoint N+M-2 and TCI codepoint N+M-1". For example, in Figure 7D, since Q1, Q2, Q3, and Q8 have values ​​of 1, 1, 0, and 1 respectively, 2 TCI states are activated at TCI codepoint 1, TCI codepoint 2, TCI codepoint 3, and TCI codepoint 8, corresponding to the second TRP 102. The corresponding TCI state IDs are "TCI state ID 3 and TCI state ID 4", "TCI state ID 6 and TCI state ID 7", "TCI state ID 9", and "TCI codepoint N+M", respectively. For example, the correspondence between TCI state IDs and the uplink / downlink TCI states in Pi and Qi can be seen in the example in Figure 7C, and its explanation is omitted here.

[0123] This makes it possible to determine at least one set of unified TCI states across multiple TRP scenarios, and the TCI state within that set of unified TCI states.

[0124] For example, other fields shown in Figures 7A, 7B, 7C, and 7D, such as "Serving Cell ID," "DL BWP ID," "UL BWP ID," and "Pi," may refer to prior art, and the present invention is not limited thereto. In this invention, the first instruction information may include all the fields shown in Figures 7A, 7B, 7C, and 7D, or it may not include some of the fields shown in Figures 7A, 7B, 7C, and 7D. For example, the first instruction information of this invention may not include the "Pi" field, and the present invention is not limited thereto and is not listed here.

[0125] In some embodiments, the first instruction information being carried by a media access control element (MAC CE) includes a media access control element (MAC CE) comprising a first media access control element (MAC CE) and / or a second media access control element (MAC CE).

[0126] In some embodiments, the terminal device further receives configuration information. Here, if the value of the configuration information is "separate", the first instruction information is carried by the first media access control element (MAC CE), and if the value of the configuration information is "joint", the first instruction information is carried by the second media access control element (MAC CE).

[0127] For example, configuration information is the upper-level parameter unifiedTCI-StateType. If the value of the unifiedTCI-StateType parameter is "separate", the first instruction information is carried by the first MAC CE, and if the value of the unifiedTCI-StateType parameter is "joint", the first instruction information is carried by the second MAC CE.

[0128] In some embodiments, the first MAC CE and the second MAC CE may be the same or different.

[0129] For example, configuration information is the upper-level parameter unifiedTCI-StateType. If the value of the unifiedTCI-StateType parameter is "separate", the first instruction information is carried by the first MAC CE, and if the value of the unifiedTCI-StateType parameter is "joint", the first instruction information is carried by the second MAC CE, which is identical to the first MAC CE.

[0130] For example, if the first MAC CE and the second MAC CE are the same, then both the first MAC CE and the second MAC CE are one of the MAC CEs shown in Figures 5A, 5B, 5C, 6A, 6B, 6C, 7A, 7B, 7C, and 7D.

[0131] For example, configuration information is the upper-level parameter unifiedTCI-StateType. If the value of the unifiedTCI-StateType parameter is "separate", the first instruction information is carried by the first MAC CE, and if the value of the unifiedTCI-StateType parameter is "joint", the first instruction information is carried by a second MAC CE that is different from the first MAC CE.

[0132] For example, the first MAC CE is any of the MAC CEs shown in Figures 5A, 5B, 5C, 6A, 6B, 6C, 7A, 7B, 7C, and 7D. For example, the second MAC CE is any of the MAC CEs shown in Figures 13A and 13B (the specific format of this second MAC CE will be described in detail later in this specification).

[0133] The following provides an illustrative example of a case where the first MAC CE and the second MAC CE are different.

[0134] In some embodiments, if the value of the unifiedTCI-StateType parameter is "separate", the first instruction information is carried by the first MAC CE.

[0135] For example, if the first MAC CE is the MAC CE shown in Figure 5A or Figure 5B, then the entire "Bi,1,Bi,2,Bi,3,Bi,4" field corresponds to the first subfield of the first field of the first MAC CE, as shown in Figure 5A or Figure 5B. For example, the value range of "i" is "1 to 8" and corresponds to each of "i" sets of TCI states or "i" unified TCI states, and "Bi,1,Bi,2,Bi,3,Bi,4" may correspond to the i-th TCI codepoint. For example, the value range of "j" in "Bi,j" is "1 to 4" and corresponds sequentially to {first downlink TCI state, second downlink TCI state, first uplink TCI state, second uplink TCI state}. Here, each "Bi,1,Bi,2,Bi,3,Bi,4" corresponds to the first subfield in the bitmap of the first field. Here, the entire field representing the TCI state identifier constitutes the second field, which is, for example, field Oct 8 to field Oct N+7 shown in Figure 5A or Figure 5B. Here, N means, for example, the total number of TCI states corresponding to the first TRP and the second TRP, and the maximum value of N is, for example, 32, but is not limited to this in the present invention.

[0136] For example, the first field shown in Figure 5A or Figure 5B corresponds to eight TCI code points, and the TCI state corresponding to one TCI code point i is determined by the TCI states corresponding to the four first subfields within the first field. For example, Bi,1 to Bi,4 correspond to the TCI state of TCI code point i.

[0137] For example, taking the i-th TCI group as an example, Table 2 shows all possible combinations of TCI states for Bi,1 to Bi,4.

[0138] [Table 2] For example, the correspondence between Bi,1, Bi,2, Bi,3, Bi,4 and the first downlink TCI state, the second downlink TCI state, the first uplink TCI state, and the second uplink TCI state may be adjusted, and the TCI order in the third column of Table 2 may be adjusted after the adjustment. The present invention is not limited thereto.

[0139] For example, the first subfield of the second field of the first MAC CE indicates the TCI state identification index (TCI state ID) corresponding to "Bi,j". For example, if at least one bit of the corresponding instruction bits "Bi,1,Bi,2,Bi,3,Bi,4" is "1", the first subfield of the second field may use 7 bits to indicate the TCI state ID (for example, indicating the upper-layer parameter "TCI-StateId"), or the remaining bits of the second field may be set as redundant bits (R). For example, as shown in Figure 5A, the first subfield of the second field starts from the second bit of the second field, and the first bit of the second field is set as a redundant bit. For example, the first subfield of the second field occupies an additional 6 bits, which are not listed here.

[0140] For example, as shown in Figure 5C, when the value of the upper-level parameter unifiedTCI-StateType is "separate", the value of the first subfield "B1,1 to B1,4" in the first field is "1000", and the combination of activated TCI states corresponds to the "first downlink TCI state" in row 8 of Table 2 above. Then, TCI state ID 1 corresponding to the "first downlink TCI state" is obtained from the first subfield "TCI state ID 1(B1,1)" on the second field (Oct 7). Here, in "TCI state ID 1(B1,1)" in Figure 5C, (B1,1) is the correspondence between TCI state ID and Bi,j for a better example, and has no physical meaning. That is, the TCI state ID corresponding to B1,1 is TCI state ID 1. For example, the value of the first subfield "B2,1 to B2,4" in the first field is "0100", and the combination of activated TCI states corresponds to the "second downlink TCI state" in row 12 of Table 2 above. Then, TCI state ID 2 corresponding to the "second downlink TCI state" is obtained from the first subfield "TCI state ID 2(B2,2)" on the second field (Oct 8). Here, (B2,2) in "TCI state ID 2(B2,2)" also has no physical meaning. For example, the specific numerical values ​​and contents of other fields such as B3,1 in Figure 5B are not listed here. For example, X in Figure 5C is an integer less than or equal to N (corresponding to N in Figure 5A) which represents the maximum index of the corresponding TCI state ID within the currently activated TCI group.

[0141] For example, the second instruction information indicates that if the TCI field shows "000" (corresponding to TCI codepoint 1), the terminal device should apply the "first downlink TCI state" and the corresponding "TCI state ID 1 (B1,1)", for example, to apply the TCI state corresponding to the downlink of the first TRP.

[0142] This makes it possible to determine at least one set of unified TCI states across multiple TRP scenarios, and the TCI states within that set of unified TCI states.

[0143] In some embodiments, when the value of the configuration information is "joint", the first instruction information indicates at least one set of unified transmission configuration instruction states (unified TCI state) via the ninth field of the second media access control control element (MAC CE).

[0144] In some embodiments, the configuration information is the upper-layer parameter unifiedTCI-StateType. If the value of the unifiedTCI-StateType parameter is "joint", the first instruction information is carried via the second MAC CE.

[0145] In some embodiments, at least one set of unified TCI states is represented by a bitmap of the ninth field.

[0146] In some embodiments, the bitmap of the ninth field is arranged in an order where rows are first and columns are second, or in an order where columns are first and rows are second.

[0147] In some embodiments, indicating at least one set of unified TCI states via the ninth field of a second media access control element (MAC CE) includes, if the first subfield of the bitmap of the ninth field is a first value, the first instruction information indicates that there is no corresponding TCI state in the tenth field corresponding to the first subfield of the bitmap of the ninth field; and if the first subfield of the bitmap of the ninth field is a second value, the first instruction information indicates that there is a corresponding TCI state in the tenth field corresponding to the first subfield of the bitmap of the ninth field.

[0148] In some embodiments, if the first subfield of the bitmap of the ninth field is a second value, the tenth field in the first instruction information corresponding to the first subfield of the bitmap of the ninth field is read, and the first subfield of the tenth field indicates the identification information index of the Transmission Configuration Instruction State (TCI state).

[0149] For example, the "first subfield of the ninth field" occupies one or more bits of the first instruction information. For example, if the "first subfield of the ninth field" occupies one bit, the "first value" may be "0" and the "second value" may be "1". If the "first subfield of the ninth field" occupies two bits, the "first value" may be "00" and the "second value" may be any value other than "00". Preferably, if the "first subfield of the ninth field" occupies one bit, the "first value" may be "1" and the "second value" may be "0". If the "first subfield of the ninth field" occupies two bits, the "first value" may be "11" and the "second value" may be any value other than "11". The present invention is not limited thereto.

[0150] This allows for a further reduction in the signaling overhead of the MAC CE through the design of the second MAC CE.

[0151] Figure 13A is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. Figure 13B is a schematic diagram of another example of the first instruction information according to an embodiment of the present invention. For example, the bitmap of the ninth field in Figure 13A is arranged in the order of rows first, followed by columns. For example, the bitmap of the ninth field in Figure 13B is arranged in the order of columns first, followed by rows.

[0152] As shown in Figure 13A or 13B, the entire "Bi,1,Bi,2" field corresponds to the first subfield of the ninth field. For example, the range of values ​​for "i" is "1 to 8", corresponding to each of the "i" group of TCI states, or to each of the "i" unified TCI state sets. Alternatively, Bi,1,Bi,2 may correspond to the i-th TCI codepoint. For example, the range of values ​​for "j" in "Bi,j" is "1 to 2", corresponding sequentially to the {first joint TCI state, second joint TCI state}. Here, each "Bi,1,Bi,2" corresponds to the first subfield in the bitmap of the ninth field. Here, the entire field showing the TCI state identifier constitutes the tenth field, for example, fields Oct 8 to Oct N+7 shown in Figure 13A or 13B. Here, N represents, for example, the total number of TCI states corresponding to the first TRP and the second TRP, and the maximum value of N is, for example, 32, and the present invention is not limited thereto.

[0153] In some embodiments, the ninth field corresponds to at least one Transmission Configuration Indicator Codepoint (TCI codepoint), where the Transmission Configuration Indicator State (TCI state) corresponding to the Transmission Configuration Indicator Codepoint (TCI codepoint) is determined by the Transmission Configuration Indicator State (TCI state) corresponding to at least one first subfield in the ninth field.

[0154] For example, the ninth field shown in Figure 13A or 13B corresponds to eight TCI code points. Here, the TCI state corresponding to TCI code point i is determined by the TCI states corresponding to two first subfields in the ninth field; for example, Bi,1 to Bi,2 correspond to the TCI state of TCI code point i.

[0155] For example, taking the i-th TCI group as an example, Table 3 shows all possible combinations of TCI states from Bi,1 to Bi,2.

[0156] [Table 3] For example, the correspondence between Bi,1,Bi,2 and the first joint TCI state and the second joint TCI state is adjustable, and after adjustment, the TCI order in the third column of Table 3 is also adjusted. The present invention is not limited to this.

[0157] In some embodiments, if the first subfield of the bitmap of the ninth field is a second value, the tenth field in the first instruction information corresponding to the first subfield of the bitmap of the ninth field is read, where the first subfield of the tenth field indicates the identification information index of the TCI state.

[0158] For example, the first subfield of the 10th field indicates the TCI state identification index (TCI state ID) corresponding to "Bi,1,Bi,2". For example, the first subfield of the 10th field may use 7 bits to indicate the TCI state ID (for example, indicating the upper-level parameter "TCI-StateId"), and the remaining bits of the 10th field may be set as redundant bits (R). For example, as shown in Figure 13A, the first subfield of the 10th field starts from the second bit of the 10th field, and the first bit of the beginning of the 10th field is set as a redundant bit.

[0159] For example, the TCI State ID field in Figure 13A or Figure 13B corresponds one-to-one with the bits whose value is "1" in the "B1,1,B1,2,B2,1,B2,2,…,B8,1,B8,2 sequence" (hereinafter referred to as the {Bi,j} sequence). For example, the first bit whose value is "1" in the "B1,1,B1,2,B2,1,B2,2,…,B8,1,B8,2 sequence" corresponds to TCI State ID 1, the second bit whose value is "1" in the "B1,1,B1,2,B2,1,B2,2,…,B8,1,B8,2 sequence" corresponds to TCI State ID 2, and so on. For example, in the sequence "B1,1,B1,2,B2,1,B2,2,...,B8,1,B8,2", if the values ​​of "B1,1,B1,2" are "00", the values ​​of "B2,1,B2,2,B2,3,B2,4" are "00", and the value of "B3,1,B3,2" is "10", then code point 3, which corresponds to "B3,1,B3,2", corresponds to the first TCI state, i.e., TCI state 1.

[0160] This makes it possible to determine at least one set of unified TCI states across multiple TRP scenarios, and the TCI states within that set of unified TCI states.

[0161] For example, with respect to other fields shown in Figures 13A and 13B, such as "Serving Cell ID," "DL BWP ID," "UL BWP ID," and "Pi," prior art may be referenced, and the present invention is not limited to these. In the present invention, the first instruction information may include all the fields shown in Figures 13A and 13B, or it may not include some of the fields shown in Figures 5A, 13A, and 13B. For example, in the present invention, the first instruction information may not include the "Pi" field, and the present invention is not limited thereto, and such examples are not listed here. The above embodiments are merely illustrative examples of embodiments of the present invention, and the present invention is not limited thereto, and appropriate modifications may be made based on each of the above embodiments. For example, each of the above embodiments may be used individually, or one or more of the above embodiments may be used in combination.

[0162] According to this embodiment, at least one set of unified TCI states in a multi-TRP scenario and the TCI states in that set can be accurately represented with less complexity.

[0163] <Example 2> Embodiments of the present invention provide a data transmission method applicable to network devices. Embodiments of the present invention may be implemented in combination with Embodiment 1 or independently. Descriptions of aspects similar to those in Embodiment 1 are omitted.

[0164] Figure 8 is a schematic diagram of an example of a data transmission method according to an embodiment of the present invention. As shown in Figure 8, the method includes the following steps.

[0165] Step 801: The network device transmits a first instruction. Here, the first instruction indicates at least one set of unified transmission configuration (TCI) states for multiple transmission and reception points (TRPs). Based on the first instruction, the terminal device determines the transmission configuration state (TCI state) in at least one set of unified transmission configuration (unified TCI) states.

[0166] This makes it possible to accurately represent, with less complexity, at least one set of unified TCI states in a multi-TRP scenario and the TCI states within that set of unified TCI states.

[0167] In some embodiments, the method further includes the following steps.

[0168] Step 802, the network device transmits a second instruction. Here, the second instruction indicates the applied transmission configuration instruction state (TCI state) based on the transmission configuration instruction state (TCI state) determined by the first instruction.

[0169] Figure 8 above merely provides a schematic representation of an embodiment of the present invention, but the present invention is not limited thereto. For example, the execution order between various steps may be appropriately adjusted, or several other steps may be added, or several steps may be removed. Those skilled in the art can make appropriate modifications based on the above description and are not limited to the description in Figure 8.

[0170] The above embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, each of the above embodiments may be used individually, or one or more of the above embodiments may be used in combination.

[0171] According to this embodiment, at least one set of unified TCI states in a multi-TRP scenario and the TCI states in that set can be accurately represented with less complexity.

[0172] <Example 3> Embodiments of the present invention provide a data receiving device. This device may be, for example, a terminal device, or one or more components configured within a terminal device. Descriptions of aspects similar to those in Embodiment 1 are omitted.

[0173] Figure 9 is a schematic diagram of an example of a data receiving device according to an embodiment of the present invention. As shown in Figure 9, the data receiving device 900 includes the following parts.

[0174] The receiving unit 901 is a receiving unit that receives first instruction information. Here, the first instruction information indicates at least one unified TCI state set of a plurality of transmission and reception points (TRPs).

[0175] The determination unit 902 determines the transmission configuration instruction state (TCI state) in at least one unified TCI state set based on the first instruction information.

[0176] In some embodiments, at least one set of unified TCI states for a single transmit / receive point (TRP) is: First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), The first downlink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), First uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First uplink transmission configuration instruction state (TCI state), Second uplink transmission configuration instruction state (TCI state), First Joint Transmission Configuration Instruction State (TCI state), Second Joint Transmission Configuration Instruction State (TCI state), The first joint transmission configuration instruction state (TCI state), or, It includes at least one combination of transmission configuration instruction states from the second joint transmission configuration instruction state (TCI state).

[0177] In some embodiments, the first instruction information is carried by a media access control element (MAC CE).

[0178] In some embodiments, the first instruction information indicates at least one set of unified TCI states via a first field, and the at least one set of unified TCI states is indicated via a bitmap of the first field.

[0179] In some embodiments, the bitmap of the first field is arranged in an order where rows are first and columns are second, or in an order where columns are first and rows are second.

[0180] In some embodiments, indicating at least one set of unified TCI states via a bitmap of first fields includes, if the first subfield of the bitmap of first fields is a first value, the first instruction information indicates that there is no corresponding TCI state in the second field corresponding to the first subfield of the bitmap of first fields, and if the first subfield of the bitmap of first fields is a second value, the first instruction information indicates that there is a corresponding TCI state in the second field corresponding to the first subfield of the bitmap of first fields.

[0181] In some embodiments, if the first subfield of the bitmap of the first field is a second value, the determination unit 902 reads the second field in the first instruction information that corresponds to the first subfield of the bitmap of the first field, and the first subfield of the second field indicates the identification information index of the transmission configuration instruction state (TCI state).

[0182] In some embodiments, the first field corresponds to at least one transmission configuration instruction code point (TCI codepoint), and the transmission configuration instruction state (TCI state) corresponding to one transmission configuration instruction code point (TCI codepoint) is determined by the transmission configuration instruction state (TCI state) corresponding to at least one first subfield in the first field.

[0183] In some embodiments, the first instruction information indicates at least one set of unified TCI states via a third and a fourth field, where the at least one set of unified TCI states is jointly indicated by the bitmap of the third field and the first subfield of the fourth field.

[0184] In some embodiments, the bitmap of the third field is arranged in a row-first-column order, or a column-first-row order, and the first subfield of the fourth field is at least one start bit of the fourth field.

[0185] In some embodiments, at least one unified TCI state set is jointly represented by a bitmap in the third field and a first subfield in the fourth field. If the first subfield in the bitmap of the third field is a first value, the first instruction information indicates that there is no corresponding TCI state in the second subfield of the fourth field that corresponds to the first subfield in the bitmap of the third field. If the first subfield in the bitmap of the third field is the second value, the first instruction information indicates that the second subfield of the fourth field corresponding to the first subfield in the bitmap of the third field does not have a corresponding TCI state, and / or If the first subfield of the fourth field has a first value, the first instruction indicates that there is no corresponding TCI state in the second subfield of the fourth field that corresponds to the first subfield of the fourth field. If the first subfield of the fourth field is the second value, the first instruction information includes indicating that the second subfield of the fourth field, which corresponds to the first subfield of the fourth field, has a corresponding TCI state.

[0186] In some embodiments, if the first subfield in the bitmap of the third field is a second value, and / or if the first subfield of the fourth field is a second value, the determination unit 902 reads the second subfield of the fourth field corresponding to the first subfield in the bitmap of the third field, and / or reads the second subfield of the fourth field corresponding to the first subfield of the fourth field, the second subfield of the fourth field indicating the identification information index of the TCI state.

[0187] In some embodiments, the third and fourth fields correspond to at least one TCI code point, and the TCI state corresponding to one TCI code point is determined by the TCI state corresponding to the first subfield of the third field and / or the TCI state corresponding to the first subfield of the fourth field.

[0188] In some embodiments, the first instruction information indicates at least one set of unified TCI states via the fifth and sixth fields.

[0189] In some embodiments, the first instruction information indicates the at least one unified TCI state set via the fifth and sixth fields, If the first subfield in the fifth field bitmap has a first value, the first instruction information indicates that the seventh field corresponding to the first subfield in the fifth field bitmap has a first number of Transmission Configuration Instruction (TCI states), If the first subfield in the bitmap of the fifth field is a second value, the first instruction information includes indicating that the seventh field corresponding to the first subfield in the bitmap of the fifth field has a second number of Transmission Configuration Instruction (TCI states).

[0190] In some embodiments, the determination unit 902 reads a seventh field in the first instruction information that corresponds to a first subfield in the bitmap of the fifth field. The first subfield of the seventh field indicates the uplink direction, downlink direction, or joint state, and the second subfield of the seventh field indicates the identification information index of the transmission configuration instruction state (TCI state).

[0191] In some embodiments, the first instruction information indicates at least one set of unified TCI states via the fifth and sixth fields. If the first subfield in the bitmap of the sixth field is a first value, the first instruction information indicates that the eighth field corresponding to the first subfield in the bitmap of the sixth field has a first number of Transmission Configuration Instruction (TCI states), If the first subfield in the bitmap of the sixth field is a second value, the first instruction information includes indicating that the eighth field corresponding to the first subfield in the bitmap of the sixth field has a second number of Transmission Configuration Instruction (TCI states).

[0192] In some embodiments, the determination unit 902 reads the first and second subfields of the eighth field in the first instruction information, which correspond to the first subfield in the bitmap of the sixth field. The first subfield of the eighth field indicates the uplink direction, downlink direction, or joint state, and the second subfield of the eighth field indicates the identification information index of the transmission configuration instruction state (TCI state).

[0193] In some embodiments, the receiving unit 901 further receives second instruction information. The second instruction information indicates the applied transmission configuration instruction state (TCI state) based on the transmission configuration instruction state (TCI state) determined by the first instruction information. The second instruction information is carried by downlink control information (DCI).

[0194] In some embodiments, the first instruction information being carried by a media access control element (MAC CE) includes a media access control element (MAC CE) comprising a first media access control element (MAC CE) and / or a second media access control element (MAC CE).

[0195] In some embodiments, the receiving unit 901 further receives configuration information. If the value of the configuration information is "separate", the first instruction information is carried by the first media access control element (MAC CE), and if the value of the configuration information is "joint", the first instruction information is carried by the second media access control element (MAC CE).

[0196] In some embodiments, when the value of the configuration information is "joint", the first instruction information indicates at least one set of unified TCI states via a ninth field of a second media access control element (MAC CE), the at least one set of unified TCI states is indicated by a bitmap of the ninth field.

[0197] In some embodiments, the bitmap of the ninth field is arranged in an order where rows are first and columns are second, or in an order where columns are first and rows are second.

[0198] In some embodiments, the first instruction information indicates at least one set of unified TCI states via the ninth field of the second media access control element (MAC CE). If the first subfield of the bitmap of the ninth field is a first value, the first instruction information indicates that there is no corresponding Transmission Configuration Instruction (TCI state) in the tenth field corresponding to the first subfield of the bitmap of the ninth field. If the first subfield of the ninth field bitmap has a second value, the first instruction information indicates that the tenth field corresponding to the first subfield of the ninth field bitmap has a corresponding Transmission Configuration Instruction (TCI state).

[0199] In some embodiments, if the first subfield of the bitmap of the ninth field is a second value, the tenth field in the first instruction information corresponding to the first subfield of the bitmap of the ninth field is read. The first subfield of the tenth field indicates the identification information index of the Transmission Configuration Instruction State (TCI state).

[0200] In some embodiments, the ninth field corresponds to at least one Transmission Configuration Indicator Code Point (TCI codepoint). The Transmission Configuration Indicator State (TCI state) corresponding to the Transmission Configuration Indicator Code Point (TCI codepoint) is determined by the Transmission Configuration Indicator State (TCI state) corresponding to at least one first subfield in the ninth field.

[0201] The above embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Appropriate modifications can be made based on the above embodiments. For example, each of the above embodiments may be used individually, or one or more of the above embodiments may be used in combination.

[0202] Although the above description only concerns components or modules related to the present invention, the present invention is not limited thereto. The data receiving device 900 may further include other components or modules. For specific details of these components or modules, refer to related technologies.

[0203] Furthermore, for the sake of clarity, Figure 9 merely illustrates the connection relationships or signal directions between various components or modules; however, it will be apparent to those skilled in the art that various related techniques, such as bus connections, can be used. The various components or modules described above may also be implemented by hardware devices such as processors, memory, transmitters, and receivers, and the present invention is not limited thereto.

[0204] According to this embodiment, at least one set of unified TCI states in a multi-TRP scenario and the TCI states in that set can be accurately represented with less complexity.

[0205] <Example 4> Embodiments of the present invention provide a data transmission device. This device may be, for example, a network device, or one or more components configured within a network device. Descriptions of aspects similar to those in Embodiment 1 are omitted.

[0206] Figure 10 is a schematic diagram of an example of a data transmission device according to an embodiment of the present invention. As shown in Figure 10, the data transmission device 1000 includes the following parts.

[0207] The transmitting unit 1001 transmits first instruction information. The first instruction information indicates at least one set of unified transmission configuration instruction states (unified TCI states) for multiple transmission and reception points (TRPs). Based on the first instruction information, the terminal device determines the transmission configuration instruction state (TCI state) in at least one set of unified transmission configuration instruction states (unified TCI states).

[0208] This makes it possible to accurately represent, with less complexity, at least one set of unified TCI states in a multi-TRP scenario and the TCI states within that set of unified TCI states.

[0209] In some of the embodiments described above, the transmitting unit 1001 transmits a second instruction information. The second instruction information indicates the applied transmission configuration instruction state (TCI state) based on the transmission configuration instruction state (TCI state) determined by the first instruction information.

[0210] The above embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Appropriate modifications can be made based on the above embodiments. For example, each of the above embodiments may be used individually, or one or more of the above embodiments may be used in combination.

[0211] Although the above description only concerns components or modules related to the present invention, the present invention is not limited thereto. The data transmission device 1000 may further include other components or modules. For specific details of these components or modules, refer to related technologies.

[0212] Furthermore, for the sake of clarity, Figure 10 merely illustrates the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related techniques, such as bus connections, can be used. The various components or modules described above may also be implemented by hardware devices such as processors, memory, transmitters, and receivers, and the present invention is not limited thereto.

[0213] According to this embodiment, at least one set of unified TCI states in a multi-TRP scenario and the TCI states in that set can be accurately represented with less complexity.

[0214] <Example 5> Embodiments of the present invention further provide a communication system, which may be described by referring to Figure 1, and the description of the same content as in Embodiments 1 to 4 will be omitted.

[0215] In some embodiments, the communication system may include at least a network device and a terminal device.

[0216] The network device transmits the first instruction information.

[0217] The terminal device receives first instruction information, which indicates at least one set of unified transmission configuration instruction states (unified TCI states) for multiple transmission and reception points (TRPs), and determines the transmission configuration instruction state (TCI state) in at least one set of unified transmission configuration instruction states (unified TCI states) based on the first instruction information.

[0218] Embodiments of the present invention further provide a network device, which may be, for example, a base station, but the present invention is not limited thereto and may be other network devices.

[0219] Figure 11 is a schematic diagram of the configuration of a network device according to an embodiment of the present invention. As shown in Figure 11, the network device 1100 may include a processor 1110 (for example, a central processing unit (CPU)) and a memory 1120, the memory 1120 being connected to the processor 1110. The memory 1120 may store various types of data, and may also store an information processing program 1130, and execute the program 1130 under the control of the processor 1110.

[0220] Furthermore, as shown in Figure 11, the network device 1100 may further include a transceiver 1140 and an antenna 1150, etc. The functions of the above components are similar to those of the prior art, and their explanation is omitted here. Note that the network device 1100 does not need to include all the units shown in Figure 11. Also, the network device 1100 may further include units not shown in Figure 11, and prior art may be referenced.

[0221] The embodiments of the present invention further provide terminal devices, but the present invention is not limited thereto and may include other devices.

[0222] Figure 12 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in Figure 12, the terminal device 1200 may include a processor 1210 and a memory 1220, the memory 1220 storing data and programs and connected to the processor 1210. Note that this figure is illustrative, and this structure may be supplemented or replaced with other types of structures to realize communication functions or other functions.

[0223] For example, the processor 1210 may be programmed to implement the data reception method described in Embodiment 1. For example, the processor 1210 may be configured to perform the steps of: receiving first instruction information, wherein the first instruction information indicates at least one set of unified transmission configuration instruction states (unified TCI states) for a plurality of transmission and reception points (TRPs); and determining a transmission configuration instruction state (TCI state) in the at least one set of unified transmission configuration instruction states (unified TCI states) based on the first instruction information.

[0224] Furthermore, as shown in Figure 12, the terminal device 1200 may further include a communication module 1230, an input unit 1240, a display 1250, and a power supply 1260, etc. The functions of these units are the same as in the prior art, and their explanation is omitted here. Note that the terminal device 1200 does not need to include all the units shown in Figure 12. The terminal device 1200 may also include units not shown in Figure 12, and prior art may be referenced.

[0225] In embodiments of the present invention, a computer-readable program is further provided that, when the program is executed on a terminal device, causes the terminal device to execute the data reception method described in Embodiment 1.

[0226] Embodiments of the present invention further provide a storage medium in which a computer-readable program is stored, and which causes a terminal device to execute the data reception method described in Embodiment 1 when the program is executed.

[0227] In embodiments of the present invention, a computer-readable program is further provided that, when executed on a network device, causes the network device to execute the data transmission method described in Embodiment 2.

[0228] Embodiments of the present invention further provide a storage medium in which a computer-readable program is stored, and which causes a network device to execute the data transmission method described in Embodiment 2 when the program is executed.

[0229] The above-described apparatus and method of the present invention may be implemented by hardware, or by combining hardware and software. The present invention relates to a computer-readable program, and when the program is executed by a logic unit, the logic unit may implement the above-described apparatus or configuration requirements, or the logic unit may implement the above-described methods or steps. The present invention relates to a storage medium for storing the above-described program, such as a hard disk, magnetic disk, optical disk, DVD, flash memory, etc.

[0230] Each processing method in each apparatus described with reference to embodiments of the present invention may be implemented using hardware, software modules executed by a processor, or a combination of both. For example, one or more functional block diagrams shown in the drawings, or one or more combinations of functional block diagrams, may correspond to each software module in the computer program flow, or to each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be implemented by hardwareizing these software modules, for example, using a field-programmable gate array (FPGA).

[0231] The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor can read information from or write information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may reside in an ASIC. The software module may be stored in the memory of the mobile terminal or on a memory card inserted into the mobile terminal. For example, if the device (e.g., a mobile terminal) uses a relatively large capacity MEGA-SIM card or a high-capacity flash memory device, the software module may be stored on the MEGA-SIM card or high-capacity flash memory device.

[0232] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams shown in the drawings may be implemented by 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 unit, a discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams shown in the drawings may be implemented, for example, by a combination of computing equipment, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors combined with DSP communication, or any other configuration.

[0233] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes can be made to the present invention as long as they do not deviate from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0234] Furthermore, the following additional information is disclosed regarding embodiments including the above-described examples. (Note 1) A data reception method applicable to a terminal device, A step of receiving first instruction information, wherein the first instruction information indicates at least one unified TCI state set of a plurality of transmission and reception points (TRPs), A method comprising the step of determining a TCI state in the at least one set of unified TCI states based on the first instruction information. (Note 2) At least one unified TCI state set of a single transmit / receive point (TRP) is: First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), The first downlink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), First uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First uplink transmission configuration instruction state (TCI state), Second uplink transmission configuration instruction state (TCI state), First Joint Transmission Configuration Instruction State (TCI state), Second Joint Transmission Configuration Instruction State (TCI state), The first joint transmission configuration instruction state (TCI state), or, The method according to Appendix 1, comprising at least one combination of transmission configuration instruction states from among the second joint transmission configuration instruction states (TCI states). (Note 3) The method described in Appendix 2, wherein the first instruction information is conveyed by a media access control element (MAC CE). (Note 4) The method according to Appendix 3, further comprising the step of indicating the first instruction information via a first field the set of at least one unified TCI state. (Note 5) The method described in Appendix 4, wherein the at least one unified TCI state set is represented by a bitmap of the first field. (Note 6) The method according to Appendix 5, wherein the bitmap of the first field is arranged in the order of rows first, then columns, or in the order of columns first, then rows. (Note 7) Representing the at least one set of unified TCI states via the bitmap of the first field means that If the first subfield of the bitmap of the first field is a first value, the first instruction information indicates that there is no corresponding transmission configuration instruction state (TCI state) in the second field corresponding to the first subfield of the bitmap of the first field. The method according to Appendix 6, wherein, if the first subfield of the bitmap of the first field is a second value, the first instruction information indicates that the second field corresponding to the first subfield of the bitmap of the first field has a corresponding transmission configuration instruction state (TCI state). (Note 8) If the first subfield of the bitmap of the first field is a second value, the determination unit reads the second field in the first instruction information that corresponds to the first subfield of the bitmap of the first field, The method according to Appendix 7, wherein the first subfield of the second field indicates an identification information index of the transmission configuration instruction state (TCI state). (Note 9) The first field corresponds to at least one Transmission Configuration Indicator Codepoint (TCI codepoint), The method according to any one of the appendices 4 to 8, wherein the transmission configuration instruction state (TCI state) corresponding to a single transmission configuration instruction code point (TCI codepoint) is determined by the transmission configuration instruction states (TCI states) corresponding to at least one of the first subfields in the first field. (Note 10) The method according to Appendix 3, further comprising the step of indicating the at least one unified TCI state set via the third and fourth fields based on the first instruction information. (Note 11) The method according to Appendix 10, wherein the at least one unified TCI state set is jointly represented by the bitmap of the third field and the first subfield of the fourth field. (Note 12) The bitmap of the third field is arranged in the order of rows first, then columns, or columns first, then rows. The method according to Appendix 11, wherein the first subfield of the fourth field is at least one start bit of the fourth field. (Note 13) The fact that the at least one set of unified TCI states is jointly represented by the bitmap of the third field and the first subfield of the fourth field is: If the first subfield in the bitmap of the third field is a first value, the first instruction information indicates that there is no corresponding TCI state in the second subfield of the fourth field that corresponds to the first subfield in the bitmap of the third field. If the first subfield in the bitmap of the third field is a second value, the first instruction information indicates that there is no corresponding TCI state in the second subfield of the fourth field that corresponds to the first subfield in the bitmap of the third field, and / or If the first subfield of the fourth field is a first value, the first instruction information indicates that there is no corresponding TCI state in the second subfield of the fourth field that corresponds to the first subfield of the fourth field. The method according to Appendix 12, wherein, if the first subfield of the fourth field is a second value, the first instruction information indicates that the second subfield of the fourth field corresponding to the first subfield of the fourth field has a corresponding TCI state. (Note 14) If the first subfield in the bitmap of the third field is the second value, and / or if the first subfield of the fourth field is the second value, read the second subfield of the fourth field corresponding to the first subfield in the bitmap of the third field, and / or read the second subfield of the fourth field corresponding to the first subfield of the fourth field. The method described in Appendix 13, wherein the second subfield of the fourth field indicates an identification information index of the TCI state. (Note 15) The third and fourth fields correspond to at least one TCI code point, The method according to any one of the appendices 11 to 14, wherein the TCI state corresponding to one TCI code point is determined by the TCI state corresponding to the first subfield of the third field and / or the TCI state corresponding to the first subfield of the fourth field. (Note 16) The method according to Appendix 1, wherein the first instruction information indicates the at least one unified TCI state set via the fifth and sixth fields. (Note 17) The first instruction information indicates the at least one unified TCI state set via the fifth and sixth fields, If the first subfield in the bitmap of the fifth field is a first value, the first instruction information indicates that the seventh field corresponding to the first subfield in the bitmap of the fifth field has a first number of transmission configuration instruction states (TCI states). The method according to Appendix 16, wherein, if the first subfield in the bitmap of the fifth field is a second value, the first instruction information indicates that the seventh field corresponding to the first subfield in the bitmap of the fifth field has a second number of transmission configuration instruction states (TCI states). (Note 18) The method according to Appendix 17, further comprising the step of the determination unit reading a seventh field in the first instruction information that corresponds to a first subfield in the bitmap of the fifth field, wherein the first subfield of the seventh field indicates an uplink direction, a downlink direction, or a joint state, and the second subfield of the seventh field indicates an identification information index of the transmission configuration instruction state (TCI state). (Note 19) The first instruction information indicates the at least one unified TCI state set via the fifth and sixth fields, When the first sub - field in the bitmap of the sixth field has a first value, the first indication information indicates that there is a first number of transmission configuration indication states (TCI states) in an eighth field corresponding to the first sub - field in the bitmap of the sixth field. The method according to Appendix 16, when the first sub - field in the bitmap of the sixth field has a second value, the first indication information includes indicating that there is a second number of transmission configuration indication states (TCI states) in an eighth field corresponding to the first sub - field in the bitmap of the sixth field. (Appendix 20) The method according to Appendix 17, further including the step that the determination unit reads a first sub - field and a second sub - field of the eighth field corresponding to the first sub - field in the bitmap of the sixth field in the first indication information, wherein the first sub - field of the eighth field indicates an uplink direction, a downlink direction or a joint state, and the second sub - field of the eighth field indicates an identification information index of the transmission configuration indication state (TCI state). (Appendix 21) The method according to any one of Appendices 1 to 20, further including the step of receiving second indication information, wherein the second indication information indicates the applied transmission configuration indication state (TCI state) based on the transmission configuration indication state (TCI state) determined by the first indication information. (Appendix 22) The method according to Appendix 21, wherein the second indication information is carried by downlink control information (DCI). (Appendix 23) The method according to Appendix 3, wherein the fact that the first indication information is carried by a media access control control element (MAC CE) includes that the media access control control element (MAC CE) includes a first media access control control element (MAC CE) and / or a second media access control control element (MAC CE). ​ further comprising the step of receiving configuration information, The method according to Supplementary Note 23, wherein when the value of the configuration information is "separate", the first indication information is carried by the first media access control control element (MAC CE), and when the value of the configuration information is "joint", the first indication information is carried by the second media access control control element (MAC CE). (Supplementary Note 25) The method according to Supplementary Note 24, wherein when the value of the configuration information is "joint", the first indication information indicates the at least one unified transmission configuration indication state (unified TCI state) set via the ninth field of the second media access control control element (MAC CE). (Supplementary Note 26) The method according to Supplementary Note 25, wherein the at least one unified transmission configuration indication state (unified TCI state) set is indicated by a bitmap of the ninth field. (Supplementary Note 27) The method according to Supplementary Note 26, wherein the bitmap of the ninth field is arranged in the order of first row and then column, or in the order of first column and then row. (Supplementary Note 28) Indicating the at least one unified transmission configuration indication state (unified TCI state) set via the ninth field of the second media access control control element (MAC CE) means that when the first subfield of the bitmap of the ninth field has a first value, the first indication information indicates that there is no corresponding transmission configuration indication state (TCI state) in the tenth field corresponding to the first subfield of the bitmap of the ninth field, The method according to Supplementary Note 27, wherein when the first subfield of the bitmap of the ninth field has a second value, the first indication information includes indicating that there is a corresponding transmission configuration indication state (TCI state) in the tenth field corresponding to the first subfield of the bitmap of the ninth field. (Note 29) If the first subfield of the bitmap of the 9th field is the second value, read the 10th field in the first instruction information that corresponds to the first subfield of the bitmap of the 9th field, The method described in Appendix 28, wherein the first subfield of the tenth field indicates an identification information index of the transmission configuration instruction state (TCI state). (Note 30) The ninth field corresponds to at least one Transmission Configuration Indicator Codepoint (TCI codepoint), The method according to any one of the appendices 26 to 29, wherein the transmission configuration instruction state (TCI state) corresponding to the transmission configuration instruction code point (TCI codepoint) is determined by the transmission configuration instruction state (TCI state) corresponding to at least one of the first subfields in the ninth field. (Note 31) A data transmission method applicable to network devices, The steps include transmitting first instruction information, wherein the first instruction information indicates at least one unified TCI state set of a plurality of transmission / reception points (TRPs), A method for determining a transmission configuration instruction state (TCI state) in the at least one set of unified transmission configuration instruction states (unified TCI state) based on the first instruction information of the terminal device. (Note 32) The method according to Appendix 31, further comprising the step of transmitting a second instruction information, wherein the second instruction information indicates the applied transmission configuration instruction state (TCI state) based on the transmission configuration instruction state (TCI state) determined by the first instruction information. (Note 33) A terminal device comprising a memory in which a computer program is stored, and a processor, wherein the processor is configured to implement the data reception method described in any of the appendices 1 to 30 by executing the computer program. (Note 34) A network device comprising a memory in which a computer program is stored, and a processor, wherein the processor is configured to implement the data transmission method described in any one of appendices 31 to 32 by executing the computer program. (Note 35) A network device that transmits the first instruction information, A communication system comprising: a terminal device that receives the first instruction information, the first instruction information indicates at least one set of unified transmission configuration instruction states (unified TCI states) for a plurality of transmission and reception points (TRPs), and determines the transmission configuration instruction state (TCI state) in the at least one set of unified transmission configuration instruction states (unified TCI states) based on the first instruction information.

Claims

1. A data receiving device configured in a terminal device, A receiving unit that receives first instruction information, wherein the first instruction information indicates at least one unified TCI state set of a plurality of transmission / reception points (TRPs), Apparatus comprising: a determination unit that determines a transmission configuration instruction state (TCI state) in the at least one unified TCI state set based on the first instruction information.

2. At least one unified TCI state set of a single transmit / receive point (TRP) is: First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second downlink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First downlink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), first uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), Second downlink transmission configuration instruction state (TCI state), First uplink transmission configuration instruction state (TCI state), second uplink transmission configuration instruction state (TCI state), First uplink transmission configuration instruction state (TCI state), Second uplink transmission configuration instruction state (TCI state), First joint transmission configuration instruction state (TCI state), second joint transmission configuration instruction state (TCI state), First joint transmission configuration instruction state (TCI state), or, The apparatus according to claim 1, comprising at least one combination of transmission configuration instruction states from among the second joint transmission configuration instruction states (TCI states).

3. The apparatus according to claim 2, wherein the first instruction information is conveyed by a media access control element (MAC CE).

4. The first instruction information indicates the at least one unified TCI state set via the first field, The apparatus according to claim 3, wherein the at least one unified TCI state set is indicated via a bitmap of the first field.

5. The apparatus according to claim 4, wherein the bitmap of the first field is arranged in the order of rows first and columns second, or columns first and rows second.

6. Representing the at least one set of unified TCI states via the bitmap of the first field means that If the first subfield of the bitmap of the first field is a first value, the first instruction information indicates that there is no corresponding transmission configuration instruction state (TCI state) in the second field corresponding to the first subfield of the bitmap of the first field. The apparatus according to claim 5, wherein, if the first subfield of the bitmap of the first field is a second value, the first instruction information indicates that the second field corresponding to the first subfield of the bitmap of the first field has a corresponding transmission configuration instruction state (TCI state).

7. If the first subfield of the bitmap of the first field is a second value, the determination unit reads the second field in the first instruction information that corresponds to the first subfield of the bitmap of the first field, The apparatus according to claim 6, wherein the first subfield of the second field indicates an identification information index of the transmission configuration instruction state (TCI state).

8. The first field corresponds to at least one Transmission Configuration Instruction Code Point (TCI codepoint), The apparatus according to claim 7, wherein a TCI state corresponding to a TCI code point is determined by a TCI state corresponding to at least one subfield of the first field in the first field.

9. The apparatus according to claim 1, wherein the first instruction information indicates the at least one unified TCI state set via the fifth and sixth fields.

10. The first instruction information indicates the at least one unified TCI state set via the fifth and sixth fields, If the first subfield in the bitmap of the fifth field is a first value, the first instruction information indicates that the seventh field corresponding to the first subfield in the bitmap of the fifth field has a first number of transmission configuration instruction states (TCI states). The apparatus according to claim 9, wherein, if the first subfield in the bitmap of the fifth field is a second value, the first instruction information indicates that there is a second number of transmission configuration instruction states (TCI states) in the seventh field corresponding to the first subfield in the bitmap of the fifth field.

11. The determination unit reads the seventh field in the first instruction information that corresponds to the first subfield in the bitmap of the fifth field, The first subfield of the seventh field indicates the uplink direction, downlink direction, or joint state. The apparatus according to claim 10, wherein the second subfield of the seventh field indicates an identification information index of the transmission configuration instruction state (TCI state).

12. The first instruction information indicates the at least one unified TCI state set via the fifth and sixth fields, If the first subfield in the bitmap of the sixth field is a first value, the first instruction information indicates that there is a first number of transmission configuration instruction states (TCI states) in the eighth field corresponding to the first subfield in the bitmap of the sixth field. The apparatus according to claim 9, wherein, if the first subfield in the bitmap of the sixth field is a second value, the first instruction information indicates that there is a second number of transmission configuration instruction states (TCI states) in the eighth field corresponding to the first subfield in the bitmap of the sixth field.

13. The determination unit reads the first subfield and the second subfield of the eighth field that correspond to the first subfield in the bitmap of the sixth field in the first instruction information, The first subfield of the eighth field indicates the uplink direction, downlink direction, or joint state. The apparatus according to claim 12, wherein the second subfield of the eighth field indicates an identification information index of the transmission configuration instruction state (TCI state).

14. The receiving unit further receives second instruction information, and the second instruction information indicates the applied transmission configuration instruction state (TCI state) based on the transmission configuration instruction state (TCI state) determined by the first instruction information. The apparatus according to claim 1, wherein the second instruction information is conveyed by downlink control information (DCI).

15. The apparatus according to claim 3, wherein the first instruction information is conveyed by a media access control element (MAC CE), and the media access control element (MAC CE) includes a first media access control element (MAC CE) and / or a second media access control element (MAC CE).

16. The receiving unit further receives configuration information, The apparatus according to claim 15, wherein if the value of the configuration information is "separate", the first instruction information is conveyed by the first media access control element (MAC CE), and if the value of the configuration information is "joint", the first instruction information is conveyed by the second media access control element (MAC CE).

17. When the value of the configuration information is "joint", the first instruction information indicates the set of at least one unified TCI state via the ninth field of the second media access control element (MAC CE), the set of at least one unified TCI state is indicated by a bitmap of the ninth field. If the first subfield of the bitmap of the ninth field is a first value, the first instruction information indicates that there is no corresponding transmission configuration instruction state (TCI state) in the tenth field corresponding to the first subfield of the bitmap of the ninth field. If the first subfield of the bitmap of the ninth field is a second value, the first instruction information indicates that the tenth field corresponding to the first subfield of the bitmap of the ninth field has a corresponding transmission configuration instruction state (TCI state). The apparatus according to claim 15, wherein the bitmaps of the ninth field are arranged in the order of rows first and columns second, or columns first and rows second.

18. The apparatus according to claim 17, wherein, if the first subfield of the bitmap of the ninth field is a second value, the tenth field in the first instruction information corresponding to the first subfield of the bitmap of the ninth field is read, and the first subfield of the tenth field indicates the identification information index of the transmission configuration instruction state (TCI state).

19. The apparatus according to claim 18, wherein the ninth field corresponds to at least one transmission configuration instruction code point (TCI codepoint), and the transmission configuration instruction state (TCI state) corresponding to one of the transmission configuration instruction code points (TCI codepoint) is determined by the transmission configuration instruction state (TCI state) corresponding to at least one of the first subfields in the ninth field.

20. A data transmission device configured in a network device, A transmitting unit that transmits first instruction information, wherein the first instruction information indicates at least one unified TCI state set of a plurality of transmission and reception points (TRPs), includes a transmitting unit, A terminal device that determines a transmission configuration instruction state (TCI state) in the at least one unified TCI state set based on the first instruction information.

Images