System and method for demonstrating TCI status under multiple TRP operation

Abstract

An example implementation may include a wireless communication method of receiving, by a wireless communication device, from a wireless communication node, a first message including a control element selectively including a field having an indicator or a field having an index, and determining, by the wireless communication device, a configured operational status of each of one or more transmission configuration indicator (TCI) states for downlink communication in accordance with the control element. An example implementation may include a wireless communication method of transmitting, by a wireless communication node, to the wireless communication device, a first message including the control element, and transmitting, by the wireless communication node, a downlink communication to the wireless communication device, the control element can be used by the wireless communication device to determine a configured operational status of each of one or more transmission configuration indicator (TCI) states for downlink communication.

Description

Technical Field

[0001] This implementation generally relates to wireless communication, and more specifically, to indicating TCI states under multi-TRP operation.

Background Art

[0002] In conventional systems, multi-downlink control information (DCI)-based physical downlink shared channel (PDSCH) multi-transmission and reception (MTRP) cannot be supported beyond in-cell deployment. Thus, downlink reception from multiple TRPs must belong to one cell. To further improve flexibility regarding scheduling and to improve reliability regarding downlink reception, multi-DCI-based inter-cell (multiple cells) MTRP operation may not be available and may be desired. It may also be desired to receive downlink signals / RS from serving cell TRPs and non-serving cell TRPs, including cells having a TRP with a physical cell identifier (PCI) different from the serving cell. Therefore, conventional systems cannot determine beam (TCI state) indication regarding downlink reception from non-serving cell TRPs.

Summary of the Invention

Means for Solving the Problems

[0003] A technical solution for indicating TCI states under multi-TRP operation can be provided. An exemplary implementation can include a wireless communication method in which a wireless communication device receives, from a wireless communication node, a first message including a control element selectively including a field with an indicator or a field with an index, and the wireless communication device determines, according to the control element, a configured operation status of each of one or more transmission configuration indicators (TCI) states regarding downlink communication.

[0004] Exemplary implementations may include methods in which downlink communication includes at least one of the following: physical downlink shared channel (PDSCH) reception, physical downlink control channel (PDCCH) reception, physical downlink shared channel (PDSCH) reception, semi-persistent (SP) channel status information reference signal (CSI-RS), semi-persistent (SP) channel status information interference measurement (CSI-IM), or aperiodic channel status information reference signal (CSI-RS).

[0005] An exemplary implementation may include a method by which a wireless communication device identifies a control element from a first message based on at least one of a medium access control (MAC) subheader or an extended logical channel indicator (eLCID).

[0006] An exemplary implementation may include a method in which the control element includes a first field that identifies the serving cell to which the control element applies.

[0007] An exemplary implementation may include a method in which the control element includes a second field indicating a Bandwidth Partial Indicator (BWP ID).

[0008] An exemplary implementation may include a method in which the control element includes one or more third fields that each indicate the operational status of the TCI state.

[0009] An exemplary implementation may include a method in which one or more third fields form a bitmap.

[0010] An exemplary implementation may include a method in which one or more third fields form one or more code points.

[0011] An exemplary implementation may include a method in which the control element selectively includes a fourth field that indicates a control resource set pool indicator (CORESET pool ID).

[0012] An exemplary implementation may include a method in which the control element selectively includes a fifth field having an index indicating a single non-serving cell information unit to which a portion of one or more activated TCI states can be associated.

[0013] An exemplary implementation may include the method according to claim 10, wherein a non-serving cell information unit can be associated with a cell composed of a physical cell indicator (PCI) different from that of the serving cell.

[0014] An exemplary implementation may include a wireless communication device receiving a second message containing radio resource control (RRC) signaling that constitutes a single non-serving cell information unit, the non-serving cell information unit may include a manner specific to the synchronization signal block (SSB) of the RRC information elements (IE).

[0015] An exemplary implementation could include a way in which the index is an addition to the PCI of a serving cell and further indicates the PCI associated with a single non-serving cell information unit.

[0016] An exemplary implementation may include a way in which the fifth field may be present in a control element when the non-serving cell information unit can be composed of an index, and the fifth field may be specific to the configured index within the non-serving cell information unit.

[0017] An exemplary implementation may include a method in which the number of activated TCI states associated with a non-serving cell information unit corresponds to additional PCIs and depends on the user equipment (UE) capabilities of the wireless communication device.

[0018] An exemplary implementation may include a method in which the control element selectively includes a sixth field having an indicator that shows whether one or more activated TCI states can be associated with a single non-serving cell information unit.

[0019] An exemplary implementation may include a method in which the sixth field consists of a single bit that essentially has either the first or second value.

[0020] An exemplary implementation may include a method in which a first value represents that an activated TCI state can be configured in a serving cell, and a second value represents that an activated TCI state can be associated with a non-serving cell information unit.

[0021] An exemplary implementation may include a way in which the sixth field can exist in the control element only when the activated TCI state can be associated with a non-serving cell information unit.

[0022] Exemplary implementations may include methods specific to indicators in which the sixth field is configured for one or more reference signals defined in the RRC IE.

[0023] An exemplary implementation may include a method in which the control element selectively includes a sixth field indicating that the activated TCI state corresponds to one or more indicators of reference signals defined in the RRC IE.

[0024] An exemplary implementation may include the method according to claim 21, in which each of the reference signals may be a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS).

[0025] An exemplary implementation may include a method in which an indicator configured for one or more reference signals corresponds to a sixth field.

[0026] An exemplary implementation may include a wireless communication method in which a wireless communication node transmits a first message containing a control element to a wireless communication device, and the wireless communication node transmits downlink communication to the wireless communication device, the control element being used by the wireless communication device to determine the configured operational status of one or more transmission configuration indicator (TCI) states relating to the downlink communication.

[0027] An exemplary implementation may include a wireless communication device comprising at least one processor and memory, the at least one processor may be configured to read code from memory and implement at least the method of this implementation.

[0028] An exemplary implementation may include a computer program product containing stored computer-readable program medium code, the code, when executed by at least one processor, causes at least one processor to implement the method according to this implementation. The present invention provides, for example, the following: (Item 1) A wireless communication method, wherein the method is A wireless communication device receives a first message from a wireless communication node, which includes a control element that selectively includes a field having an indicator or a field having an index. The wireless communication device determines the configured operating status of each of one or more transmission configuration indicator (TCI) states relating to downlink communication according to the control element. Wireless communication methods, including those mentioned above. (Item 2) The method according to item 1, wherein the downlink communication includes at least one of the following: physical downlink shared channel (PDSCH) reception, physical downlink control channel (PDCCH) reception, physical downlink shared channel (PDSCH) reception, semi-persistent (SP) channel status information reference signal (CSI-RS), semi-persistent (SP) channel status information interference measurement (CSI-IM), or non-periodic channel status information reference signal (CSI-RS). (Item 3) The method according to item 1, further comprising the wireless communication device identifying the control element from the first message based on at least one of a media access control (MAC) subheader or an extended logical channel indicator (eLCID). (Item 4) The method according to item 1, wherein the control element includes a first field indicating the identification of the serving cell to which the control element applies. (Item 5) The method according to item 1, wherein the control element includes a second field indicating a bandwidth partial indicator (BWP ID). (Item 6) The method according to item 1, wherein the control element includes one or more third fields indicating the operating status of the TCI state, respectively. (Item 7) The method according to item 6, wherein the one or more third fields form a bitmap. (Item 8) The method according to item 6, wherein the one or more third fields form one or more code points. (Item 9) The method according to item 1, wherein the control element selectively includes a fourth field indicating a control resource set pool indicator (CORESET pool ID). (Item 10) The method according to item 1, wherein the control element selectively includes a fifth field having an index indicating a single non-serving cell information unit to which a portion of the one or more activated TCI states can be associated. (Item 11) The method according to item 10, wherein the non-serving cell information unit can be associated with a cell composed of physical cell indicators (PCIs) different from those of the serving cell. (Item 12) The method according to item 10, further comprising the wireless communication device receiving a second message including radio resource control (RRC) signal transmission constituting the single non-serving cell information unit, wherein the non-serving cell information unit may be specific to a synchronization signal block (SSB) of an RRC information element (IE). (Item 13) The method according to item 10, wherein the index is an addition to the PCI of a serving cell and further indicates the PCI associated with the single non-serving cell information unit. (Item 14) The method according to item 10, wherein the fifth field may be present in the control element when the non-serving cell information unit may be composed of the index, and the fifth field may be specific to the configured index in the non-serving cell information unit. (Item 15) The method according to item 12, wherein the number of activated TCI states associated with the non-serving cell information unit corresponds to the additional PCI and depends on the user equipment (UE) capability of the wireless communication device. (Item 16) The method of item 15, wherein the UE is capable of supporting inter-cell MTRP operation in response to the UE reporting the UE capacity associated with the maximum number. (Item 17) The method of item 15, wherein the UE is unable to support inter-cell MTRP operation in response to the UE not performing the task of reporting the UE capacity associated with the maximum number. (Item 18) The method according to item 1, wherein the control element selectively includes a sixth field having an indicator indicating whether the one or more activated TCI states can be associated with a single non-serving cell information unit. (Item 19) The method according to item 18, wherein the sixth field essentially consists of one bit with either a first or second value. (Item 20) The method according to item 19, wherein the first value indicates that the activated TCI state can be configured in a serving cell, and the second value indicates that the activated TCI state can be associated with the non-serving cell information unit. (Item 21) The method according to item 18, wherein the sixth field may be present in the control element only when the activated TCI state can be associated with the non-serving cell information unit. (Item 22) The method according to item 18, wherein the sixth field may be specific to the indicator configured for one or more reference signals as defined in the RRC IE. (Item 23) The method according to item 1, wherein the control element selectively includes a sixth field indicating that the activated TCI state corresponds to one or more indicators of reference signals defined in the RRC IE. (Item 24) The method according to item 23, wherein each of the aforementioned reference signals may be a synchronization signal block (SSB) or a channel status information reference signal (CSI-RS). (Item 25) The indicator configured for the one or more reference signals corresponds to the sixth field, as described in item 23. (Item 26) A wireless communication method, wherein the method is The wireless communication node transmits a first message containing control elements to the wireless communication device, The wireless communication node transmits downlink communication to the wireless communication device. Includes, A wireless communication method wherein the control element can be used by the wireless communication device to determine the configured operating status of each of one or more transmission configuration indicator (TCI) states relating to the downlink communication. (Item 27) A wireless communication device comprising at least one processor and memory, wherein the at least one processor can be configured to read code from the memory and implement the method described in any of items 1-26. (Item 28) A computer program product comprising stored computer-readable program media code, wherein the code, when executed by at least one processor, causes the at least one processor to implement the method described in any of items 1-26. [Brief explanation of the drawing]

[0029] These and other aspects and features of this implementation will become apparent to those skilled in the art upon closer examination of the following description of the specific implementation in conjunction with the attached figures.

[0030] [Figure 1] Figure 1 illustrates an exemplary cellular communication network in which techniques and other aspects disclosed herein may be implemented according to one embodiment of the present disclosure.

[0031] [Figure 2] Figure 2 illustrates block diagrams of exemplary base station and user equipment devices in several implementations of the present disclosure.

[0032] [Figure 3] Figure 3 illustrates the system implemented in this model.

[0033] [Figure 4] Figure 4 illustrates the first state instruction in this implementation.

[0034] [Figure 5] Figure 5 illustrates the second state instruction in this implementation.

[0035] [Figure 6] Figure 6 illustrates the third state instruction in this implementation.

[0036] [Figure 7] Figure 7 illustrates the signal transmission structure in this implementation.

[0037] [Figure 8] Figure 8 illustrates the fourth state instruction in this implementation.

[0038] [Figure 9] Figure 9 illustrates the fifth state instruction in this implementation.

[0039] [Figure 10] Figure 10 illustrates the sixth state instruction in this implementation.

[0040] [Figure 11] Figure 11 illustrates the seventh state instruction in this implementation.

[0041] [Figure 12] Figure 12 illustrates a first method for showing the TCI state under multiple TRP operation in this implementation.

[0042] [Figure 13] Figure 13 illustrates a second method for showing the TCI state under multiple TRP operation, in addition to the method shown in Figure 13.

[0043] [Figure 14] Figure 14 illustrates a third method for demonstrating the TCI state under multiple TRP operation as implemented in this model.

[0044] [Figure 15] Figure 15 illustrates a fourth method for demonstrating the TCI state under multiple TRP operation as implemented in this model.

[0045] [Figure 16] Figure 16 illustrates a fifth method for demonstrating the TCI state under multiple TRP operation as implemented in this model. [Modes for carrying out the invention]

[0046] This implementation will be described in detail here with reference to drawings, which may be provided as illustrative examples of the implementation, so as to enable those skilled in the art to practice implementations and alternatives that are obvious to them. It should be noted that the following figures and examples are not intended to limit the scope of this implementation to a single implementation, and other implementations may be possible by replacing some or all of the elements described or illustrated. Furthermore, some elements of this implementation may be partially or completely implemented using known components, and only those parts of such known components that may be necessary for understanding this implementation will be described, and detailed descriptions of other parts of such known components will be omitted so as not to obscure this implementation. Implementations described as being implemented in software may include, but should not be limited to, implementations implemented in hardware, or a combination of software and hardware, and vice versa, unless otherwise specified herein, as would be obvious to those skilled in the art. Herein, implementations showing a singular component should not be considered limiting; rather, this disclosure may be intended to include other implementations that include multiple identical components, and vice versa, unless otherwise expressly stated herein. Furthermore, unless expressly stated otherwise, the applicant does not intend that any term in this specification or claims should be attributed to a rare or special meaning. Moreover, this implementation includes currently and future known equivalents of known components referenced herein as illustrations.

[0047] Generally, communication protocols can include several MIMO features, which facilitate the use of multiple antenna elements at the base station for both frequency bands below 6 GHz (frequency range 1, FR1) and above 6 GHz (frequency range 2, FR2). MIMO features can support multiple TRP operation. Multiple TRP can work together to transmit data to the UE to improve transmission performance. In communication protocols, beam indication for downlink signals / RS with multiple DCI-based MTRP operation can include multi-step signaling, not only to reduce signaling overhead but also to ensure flexibility of beam indication, and multi-step signaling involves upper-layer signaling and physical-layer signaling. Beam indication can include TCI state indication or QCL assumption. Specific parameters of QCL can be included in the Radio Resource Control (RRC) IE TCI state as follows:

[0048] Figure 1 illustrates an exemplary wireless communication network and / or system 100 in which the techniques disclosed herein may be implemented by an implementation of the present disclosure. In the following discussion, the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and may be referred to herein as “Network 100”. Such exemplary Network 100 includes a base station 102 (hereinafter “BS102”), user equipment devices 104 (hereinafter “UE104”) that can communicate with each other via a communication link 110 (e.g., a wireless communication channel), and clusters of cells 126, 130, 132, 134, 136, 138, and 140 that overlay a geographical area 101. In Figure 1, BS102 and UE104 may be included in the respective geographical boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating within its allocated bandwidth and providing a suitable radio communication range to its intended users.

[0049] For example, BS102 may operate within an allocated channel transmission bandwidth and provide UE104 with a suitable communication range. BS102 and UE104 may communicate via downlink radio frames 118 and uplink radio frames 124, respectively. Each radio frame 118 / 124 may be further divided into subframes 120 / 127, which may include data symbols 122 / 128. In this disclosure, BS102 and UE104 may be described herein as non-limiting examples of “communication nodes” capable of implementing the methods disclosed herein. Such communication nodes may be capable of wireless and / or wired communication according to various implementations of the present solution.

[0050] Figure 2 illustrates a block diagram of an exemplary wireless communication system 200 for transmitting and receiving wireless communication signals, such as OFDM / OFDMA signals, according to several implementations of the present solution. System 200 may include components and elements configured to support known or conventional operating features that do not need to be described in detail herein. In one exemplary implementation, system 200 can be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment such as the wireless communication environment 100 in Figure 1, as described above.

[0051] System 200 generally includes a base station 202 (hereinafter, "BS202") and a user equipment device 204 (hereinafter, "UE204"). BS202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each module being coupled and interconnected to one another via a data communication bus 220 as needed. UE204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each module being coupled and interconnected to one another via a data communication bus 240 as needed. BS202 communicates with UE204 via a communication channel 250, which may be any radio channel or other medium suitable for data transmission as described herein.

[0052] As will be understood by those skilled in the art, system 200 may further include any number of modules other than those shown in Figure 2. Those skilled in the art will understand that various illustrative blocks, modules, circuits, and processing logic described in relation to the implementations disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps may be described in general terms of their functionality. Whether such functionality can be implemented as hardware, firmware, or software may depend on the specific application and the design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a manner appropriate for each specific application, but such implementation decisions should not be construed as limiting the scope of this disclosure.

[0053] In some implementations, the UE transceiver 230 may be referred to herein as an “uplink” transceiver 230, including a radio frequency (RF) transmitter and an RF receiver, each having a network that can be coupled to antenna 232. A duplex switch (not shown) may, alternatively, couple the uplink transmitter or receiver to the uplink antenna in a time-duplex configuration. Similarly, in some implementations, the BS transceiver 210 may be referred to herein as a “downlink” transceiver 210, including an RF transmitter and an RF receiver, each having a network that can be coupled to antenna 212. A downlink duplex switch may, alternatively, couple the downlink transmitter or receiver to the downlink antenna 212 in a time-duplex configuration. The operation of the two transceiver modules 210 and 230 may be time-coordinated so that the uplink receiver network is coupled to the uplink antenna 232 for receiving transmissions over the radio transmission link 250, while the downlink transmitter can be coupled to the downlink antenna 212 at the same time. In some implementations, minimal protection time may be required during duplex direction changes, accompanied by throttling synchronization.

[0054] The UE transceiver 230 and base station transceiver 210 can communicate via a radio data communication link 250 and be configured to work with a appropriately configured RF antenna arrangement 212 / 232 capable of supporting specific radio communication protocols and modulation schemes. In some illustrative implementations, the UE transceiver 210 and base station transceiver 210 can be configured to support industry standards such as Long-Term Evolution (LTE) and new 5G standards. However, it should be understood that this disclosure is not necessarily limited to specific standards and associated protocols. Rather, the UE transceiver 230 and base station transceiver 210 can be configured to support alternative or additional radio data communication protocols, including future standards or their variations.

[0055] Depending on the implementation, BS202 may be, for example, an evolved NodeB (eNB), a service-providing eNB, a targeted eNB, a femtostation, or a picostation. In some implementations, UE204 may be embodied in various types of user devices such as mobile phones, smartphones, personal digital assistants (PDAs), tablets, laptop computers, and wearable computing devices. Processor modules 214 and 236 may be implemented or realized with general-purpose processors, content-addressable memory, digital signal processors, application-specific integrated circuits, field-programmable gate arrays, any suitable programmable logic devices, separate gate or transistor logic, separate hardware components, or any combination thereof, designed to perform the functions described herein. Thus, the processor may be realized as a microprocessor, controller, microcontroller, state machine, or equivalent. The processor may also be implemented as a combination of computing devices, for example, a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other combination of such configurations.

[0056] Furthermore, steps of methods or algorithms described in connection with the implementations disclosed herein can be embodied directly in hardware, firmware, or software modules, or any practical combination thereof, that are executed by processor modules 214 and 236, respectively. Memory modules 216 and 234 can be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 can be coupled to processor modules 210 and 230, respectively, so that processor modules 210 and 230 can read information from and write information to memory modules 216 and 234, respectively. Memory modules 216 and 234 can be integrated into their respective processor modules 210 and 230. In some implementations, each of memory modules 216 and 234 may include a cache memory for storing temporary variables or other intermediate information during the execution of instructions to be executed by processor modules 210 and 230, respectively. Each of the memory modules 216 and 234 may also include non-volatile memory for storing instructions to be executed by the processor modules 210 and 230, respectively.

[0057] The network communication module 218 generally represents the hardware, software, firmware, processing logic, and / or other components of the base station 202, which enable bidirectional communication between the base station transceiver 210 and other network components and communication nodes configured to communicate with the base station 202. For example, the network communication module 218 may be configured to support Internet or WiMAX traffic. In a typical deployment, but not limited to, the network communication module 218 provides an 802.3 Ethernet® interface so that the base station transceiver 210 can communicate with conventional Ethernet®-based computer networks. Thus, the network communication module 218 may include a physical interface for connection to a computer network (e.g., a mobile switching center (MSC)). The terms “configured for,” “configured to,” and their inflections as used herein in relation to a specified operation or function refer to a device, component, circuit, structure, machine, signal, etc., that can be physically constructed, programmed, formatted, and / or positioned to perform a specified operation or function.

[0058] Figure 3 illustrates the system according to this implementation. As illustrated using the example in Figure 3, the exemplary system may include a first BS310, a second BS320, and a UE330. The first BS310 may have a communication range 312 and may transmit first downlink control information (DCI 0) 314 by one or more operating states 316. The second BS310 may have a communication range 322 and may transmit second downlink control information (DCI 1) 324 by one or more operating states 326.

[0059] Figure 4 illustrates a first state instruction according to this implementation. As illustrated using the example in Figure 4, the exemplary state instruction 400 may include an octet structure 402, an identifier octet 410, a first TCI state octet 420, a second TCI state octet 422, and a third TCI state octet 424. It should be understood that the number of TCI state octets may be greater than or less than the number illustrated using the examples herein.

[0060] With respect to PDSCH, TCI state indication can be jointly determined by RRC, MAC CE, and DCI in the following three-step manner. Step 1 may include TCI state configuration or reconfiguration. Here, the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config may be jointly used to configure up to 128 TCI states as candidates. Step 2 may include TCI state activation or deactivation. Here, TCI state activation or deactivation with respect to the UE-specific PDSCH MAC CE may be used to select up to 8 TCI states from the RRC configured TCI states. In this, the CORESET pool ID field and the field T are the activated TCI states. i Step 3 can be used to indicate that the mapping between the DCI transmission configuration instruction code point set by can be specific to the RRC parameter ControlResourceSetId, which consists of the CORESET pool ID in the RRC IE ControlResourceSet. More specifically, one value of the CORESET pool ID corresponds to one TRP. Step 3 can include a TCI state instruction. Here, the "Transmission Configuration Instruction" field in the DCI can be used to indicate one TCI state from the MAC CE Activated TCI state.

[0061] Figure 5 illustrates the second state instruction according to this implementation. As illustrated using the example in Figure 5, the exemplary state instruction 500 may include an octet structure 402, a first identifier octet 510, and a second identifier octet 520.

[0062] With respect to the Physical Downlink Control Channel (PDCCH), the TCI state indication can be jointly determined by the RRC and MAC CE in the following two-step manner. Step 1 may include TCI state configuration or reconfiguration. Here, when ControlResourceSetId or ControlResourceSetId-r16 is 0, the RRC parameters tci-States-ToAddModList and tci-States-ToReleaseList in PDSCH-Config can be jointly used to configure up to the first 64 TCI states as candidates. Otherwise, the RRC parameters tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList in ControlResourceSet can be jointly used to configure up to 64 TCI states as candidates. One value of the RRC parameter coresetPoolIndex-r16 may correspond to one TRP. Step 2 may include TCI state indication. Here, one or more TCI states can be activated or deactivated by MAC CE from the RRC configuration TCI states and can correspond to one CORESET with respect to a PDCCH directed to one TRP.

[0063] With respect to the SP Channel State Information Reference Signal (CSI-RS) or Channel State Information Interference Measurement (CSI-IM), the TCI state indication can be determined by the MAC CE in the following one-step manner. Step 1 may include the TCI state indication. Here, at least one TCI state can be indicated by the MAC CE from the RRC configuration TCI state, which can be used as a QCL source for a resource in the semi-persistent NZP CSI-RS resource set indicated by the SP CSI-RS resource set ID field.

[0064] Figure 6 illustrates a third state instruction according to this implementation. As illustrated using the example in Figure 6, the exemplary state instruction 600 may include a first configuration octet 610, a first TCI state octet 620, a second TCI state octet 622, and a third TCI state octet 624. It should be understood that the number of TCI state octets may be greater than or less than the number illustrated using the examples herein.

[0065] With respect to aperiodic CSI-RS, the TCI state indication for the indicated aperiodic CSI trigger state can be jointly determined by the RRC, MAC CE, and DCI in the following three-step manner: Step 1 may include TCI state configuration or reconfiguration. Here, the RRC parameter CSI-AperiodicTriggerStateList may be used to configure up to 128 trigger states as candidates. Step 2 may include TCI state activation or reactivation. Here, the aperiodic CSI trigger state subselection MAC CE may be used to select up to 63 aperiodic CSI trigger states from the RRC configuration parameter aperiodicTriggerStateList. Step 3 may include TCI state indication. Here, the "CSI Request" field in the DCI may be used to indicate one TCI state for one aperiodic CSI trigger state from the MAC CE activated TCI states.

[0066] Figure 7 illustrates the signal transmission structure according to this implementation. As illustrated using the example in Figure 7, the exemplary signal transmission structure 700 may include an IE TCI state 710 with an indicator, at least one non-serving cell information 720, a configuration output 722 of the non-serving cell information 720, an index 724 of the non-serving cell information, an indicator 730, a CORESET pool index 732, and one or more activated TCI states. The IE TCI state 710 with an indicator may be associated with an RRC. The indicator 730 may be associated with a MAC-CE. The configuration output 722 may include a new IE, and the new IE may have a structure including an index, at least one additional PCI, and at least one SSB configuration.

[0067] In some embodiments, the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception. If the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the downlink reception may be a PDSCH. If the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the MAC CE may be identified by a MAC subheader with an LCID or eLCID.

[0068] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a Serving Cell ID field. Here, the Serving Cell ID can identify the serving cell to which the MAC CE applies.

[0069] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field may indicate the DL BWP to which the MAC CE applies as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits. This field may be ignored if this MAC CE applies to a set of serving cells.

[0070] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include one or more fields indicating the activation or deactivation status of a TCI state, which is comprised of the RRC parameter TCI-state ID i. Here, one or more fields may be a bitmap, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that a TCI state with TCI-state ID i is activated and mapped to the code point of the DCI transmission configuration instruction field, T i The field is set to 0 to indicate that the TCI state with TCI-state ID i is deactivated and cannot be mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which the TCI state can be mapped is set to 1. i It can be determined by its ordinal position among all TCI states with fields, i.e., T set to 1. i The first TCI state with a field is mapped to code point value 0, and T is set to 1. iA second TCI state accompanied by a field is mapped to a code point value of 1, and so on. The maximum number of activated TCI states may be 8. Here, the number of fields may be variable and depend on the configured indicators of the reference signal in the RRC IE TCI state, in addition to the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config. Here, one or more fields may be one or more code points, each field may be represented as a "TCI state ID".

[0071] Here, the length of each TCI state ID field can be 7 bits, and its value can be any integer from 0 to 127. The value i in the TCI state ID field indicates that the TCI state with TCI-state ID i is activated and mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which a TCI state can be mapped can be determined by its ordinal position among all TCI states activated by the TCI state ID field, i.e., the first TCI state with the lowest TCI state ID is mapped to code point value 0, the second TCI state with the second lowest TCI state ID is mapped to code point value 1, and so on. The maximum number of activated TCI states can be 8. Here, the number of fields can be variable and may depend on the configured indicators of the reference signal in the RRC IE TCI states, in addition to the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config.

[0072] When the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the MAC CE may include a field for the CORESET pool ID. Here, the CORESET pool ID field indicates that the mapping between the activated TCI state and the code point of the DCI transmission configuration indication set by the T i or the TCI state ID field may be specific to the associated ControlResourceSetId composed of the CORESET pool ID.

[0073] When the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the MAC CE may include a field for the index. Here, the index field indicates non-serving cell information to which the activated TCI state can be associated. A non-serving cell can be a cell with a different PCI from the serving cell. The non-serving cell information can be configured by the RRC, can be specified in the SSB in the RRC IE TCI state, and includes at least one of the index, an additional PCI different from the serving cell PCI, the SSB time domain position, the SSB transmission periodicity, or the SSB transmission power. Here, the configured index indicates non-serving cell information with an additional PCI. The maximum number of non-serving cell information can be configured by the RRC and depends on the reported UE capabilities. Here, when the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. When the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation.

[0074] Furthermore, only one non-serving cell information can be configured by the RRC. Here, if the non-serving cell information is not configured with an index, the index field in the MAC CE may not exist. Here, if the non-serving cell information is configured with an index, the index field in the MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in the MAC CE may be the same as the configured index in the non-serving cell information. The number of configured TCI states associated with the non-serving cell information may be specific to additional PCIs and depends on the reported UE capabilities.

[0075] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate whether an activated TCI state can be associated with non-serving cell information. Furthermore, the length of the indicator field may be 1 bit, which is set to 0 or 1. Here, an indicator field set to one of the values ​​0 or 1 indicates that an activated TCI state can be configured in a serving cell, and an indicator field set to the other value indicates that an activated TCI state can be associated with non-serving cell information. Here, the indicator field may only exist when an activated TCI state can be associated with non-serving cell information. Here, the indicator field in the MAC CE may be specific to the configured indicator of the reference signal in the RRC IE TCI state. For example, the indicator field in the MAC CE may be the same as or equal to the configured indicator.

[0076] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state for downlink reception, the indicator field may indicate that the activated TCI state is identified by a configured indicator of the reference signal in the RRC IE TCI state. Here, the reference signal may be SSB or CSI-RS. Furthermore, the configured indicator may indicate that the TCI state can be associated with additional PCI or serving cell PCI for non-serving cell information. Furthermore, the number of configured non-serving cell information may be 1. Here, the indicator field in the MAC CE may be the same as, or equal to, the configured indicator of the reference signal in the RRC IE TCI state. The indicator field in the MAC CE may only be present when the activated TCI state can be associated with non-serving cell information.

[0077] Figure 8 illustrates a fourth state instruction according to this implementation. As illustrated using the example in Figure 8, the exemplary state instruction 800 may include an identifier octet 810, a configuration octet 820, a first TCI state identifier octet 830, a second TCI state identifier octet 832, and a third TCI state identifier octet 834. It should be understood that the number of TCI state identifier octets may be greater than or less than the number illustrated using the examples herein.

[0078] In some embodiments, the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception. If the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the downlink reception may be a PDSCH. If the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the MAC CE may be identified by a MAC subheader with an LCID or eLCID.

[0079] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a Serving Cell ID field. Here, the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0080] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits. This field may be ignored when the MAC CE is applied to a set of serving cells.

[0081] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include one or more fields indicating the activation or deactivation status of a TCI state, which is comprised of the RRC parameter TCI-state ID i. Here, one or more fields may be a bitmap, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that a TCI state with TCI-state ID i is activated and mapped to the code point of the DCI transmission configuration instruction field, T iThe field is set to 0 to indicate that the TCI state with TCI-state ID i is deactivated and cannot be mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which the TCI state can be mapped is set to 1. i It can be determined by its ordinal position among all TCI states with fields, i.e., T set to 1. i The first TCI state with a field is mapped to code point value 0, and T is set to 1. i A second TCI state with a field is mapped to a code point value of 1, and so on. The maximum number of activated TCI states may be 8. Here, the number of fields may be variable and depend on the configured indicators of the reference signal in the RRC IE TCI state, in addition to the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config.

[0082] Furthermore, one or more fields may be one or more code points, each field may be represented as a "TCI State ID". Here, the length of each TCI State ID field may be 7 bits, and its value may be any integer from 0 to 127. The value i of the TCI State ID field indicates that the TCI state with TCI State ID i is activated and mapped to a code point in the DCI Transmission Configuration Indicator field. The code point in the DCI Transmission Configuration Indicator field to which a TCI state can be mapped may be determined by its ordinal position among all TCI states activated by the TCI State ID field, i.e., the first TCI state with the lowest TCI State ID is mapped to code point value 0, the second TCI state with the second lowest TCI State ID is mapped to code point value 1, and so on. The maximum number of activated TCI states may be 8. The number of fields can be variable and may depend on the configured indicators of the reference signal in the RRC IE TCI state, in addition to the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config.

[0083] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field in the CORESET pool ID. Here, the CORESET pool ID field contains the activated TCI state and T i Alternatively, it indicates that the mapping between the code point of the DCI transmission configuration instruction set by the TCI status ID field may be specific to the associated ControlResourceSetId, which is configured with the CORESET pool ID.

[0084] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state related to downlink reception, the MAC CE may include an index field. Furthermore, the index field may indicate non-serving cell information to which the activated TCI state can be associated. Here, a non-serving cell may be a cell with a different PCI than the serving cell.

[0085] Furthermore, non-serving cell information can be determined by the RRC configuration and can be specified in the SSB in the RRC IE TCI state, and includes at least one of the following: index, additional PCIs different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Here, the maximum number of additional PCIs for non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Two or more additional PCIs for non-serving cell information can be configured by the RRC.

[0086] If non-serving cell information is not included in the index, the value of the index field in MAC CE can be determined by the order of additional PCIs for multiple non-serving cell pieces of information. For example, a value of 0 in the index field in MAC CE corresponds to the lowest additional PCI for the non-serving cell piece of information, a value of 1 in the index field in MAC CE corresponds to the second lowest additional PCI for the non-serving cell piece of information, and so on. For example, a value of 0 in the index field in MAC CE indicates a serving cell PCI, a value of 1 in the index field in MAC CE indicates the lowest additional PCI for the non-serving cell piece of information, a value of 2 in the index field in MAC CE indicates the second lowest additional PCI for the non-serving cell piece of information, and so on.

[0087] If non-serving cell information is comprised of an index, the index field in MAC CE may be specific to the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be equal to the value of the index configured in the non-serving cell information + 1. Here, the number of configured TCI states associated with the non-serving cell information may be exclusive to one additional PCI and depends on the reported UE capability.

[0088] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state for downlink reception, the MAC CE may include an indicator field. Furthermore, the indicator field may indicate whether the activated TCI state can be associated with non-serving cell information. Here, the length of the indicator field can be 1 bit, which is set to either 0 or 1. An indicator field set to one of the values ​​0 or 1 may indicate that the activated TCI state can be configured in a serving cell, while an indicator field set to the other value may indicate that the activated TCI state can be associated with non-serving cell information. Here, the indicator field may only exist when the activated TCI state can be associated with non-serving cell information. The indicator field in the MAC CE may be specific to the configured indicator of the reference signal in the RRC IE TCI state. For example, the indicator field in the MAC CE may be the same as, or equal to, the configured indicator.

[0089] Furthermore, the indicator field may indicate that the activated TCI state is identified by a configured indicator of the reference signal in the RRC IE TCI state. The reference signal may be SSB or CSI-RS. The configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information may be 1. The indicator field in MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI state. The indicator field in MAC CE may only exist when the activated TCI state can be associated with non-serving cell information.

[0090] In some embodiments, the UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding the downlink reception. The downlink reception may be a PDSCH. The MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0091] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits. This field may be ignored if this MAC CE is applied to a set of serving cells.

[0092] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include one or more fields indicating the activation or deactivation status of a TCI state, which is comprised of the RRC parameter TCI-state ID i. Furthermore, one or more fields may be bitmaps, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that a TCI state with TCI-state ID i is activated and mapped to the code point of the DCI transmission configuration instruction field, T iThe field is set to 0 to indicate that the TCI state with TCI-state ID i is deactivated and cannot be mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which the TCI state can be mapped is set to 1. i It can be determined by its ordinal position among all TCI states with fields, i.e., T set to 1. i The first TCI state with a field is mapped to code point value 0, and T is set to 1. i A second TCI state accompanied by a field is mapped to code point value 1, and so on. The maximum number of activated TCI states may be 8. The number of fields may be variable and depend on the configured indicators of the reference signal in the RRC IE TCI state, in addition to the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config.

[0093] Furthermore, one or more fields may be one or more code points, each field may be represented as a "TCI State ID". Here, the length of each TCI State ID field may be 7 bits, and its value may be any integer from 0 to 127. The value i of the TCI State ID field indicates that the TCI state with TCI State ID i is activated and mapped to a code point in the DCI Transmission Configuration Indicator field. The code point in the DCI Transmission Configuration Indicator field to which a TCI state can be mapped may be determined by its ordinal position among all TCI states activated by the TCI State ID field, i.e., the first TCI state with the lowest TCI State ID is mapped to code point value 0, the second TCI state with the second lowest TCI State ID is mapped to code point value 1, and so on. The maximum number of activated TCI states may be 8. Here, the number of fields can be variable and may depend on the configured indicators of the reference signal in the RRC IE TCI state, in addition to the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config.

[0094] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field in the CORESET pool ID. Here, the CORESET pool ID field contains the activated TCI state and T i Alternatively, it indicates that the mapping between the code point of the DCI transmission configuration instruction set by the TCI status ID field may be specific to the associated ControlResourceSetId, which is configured with the CORESET pool ID.

[0095] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include fields in the index.

[0096] Furthermore, the index field may indicate non-serving cell information to which the activated TCI state can be associated. A non-serving cell may be a cell with a PCI different from that of the serving cell. Non-serving cell information may be configured by the RRC and may be specified in the SSB in the RRC IE TCI state, and may include at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. The configured index indicates non-serving cell information with additional PCI. The maximum number of non-serving cell information may be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Only one non-serving cell information may be configured by the RRC. If non-serving cell information is not configured by the index, the index field in the MAC CE cannot exist. If non-serving cell information is comprised of an index, the index field in MAC CE may be specific to the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the index configured in the non-serving cell information. The number of configured TCI states associated with non-serving cell information may be specific to additional PCIs and may depend on the reported UE capabilities.

[0097] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state for downlink reception, the MAC CE may include an indicator field. The indicator field may indicate that an activated TCI state is identified by a configured indicator of a reference signal in the RRC IE TCI state. The reference signal may be SSB or CSI-RS. Here, the configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. Here, the number of configured non-serving cell information items may be two or more. The indicator field in the MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI state. The indicator field in the MAC CE may only be present when an activated TCI state can be associated with non-serving cell information.

[0098] In some embodiments, the UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding the downlink reception. The downlink reception may be a PDSCH. The MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0099] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits. This field may be ignored if this MAC CE is applied to a set of serving cells.

[0100] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include one or more fields indicating the activation or deactivation status of a TCI state, which is comprised of the RRC parameter TCI-state ID i. Here, one or more fields may be a bitmap, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that a TCI state with TCI-state ID i is activated and mapped to the code point of the DCI transmission configuration instruction field, T i The field is set to 0 to indicate that the TCI state with TCI-state ID i is deactivated and cannot be mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which the TCI state can be mapped is set to 1. i It can be determined by its ordinal position among all TCI states with fields, i.e., T set to 1. i The first TCI state with a field is mapped to code point value 0, and T is set to 1. i A second TCI state with a field is mapped to a code point value of 1, and so on. The maximum number of activated TCI states may be 8. Here, the number of fields may be variable and depend on the configured indicators of the reference signal in the RRC IE TCI state, in addition to the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config.

[0101] Furthermore, one or more fields may be one or more code points, each field may be represented as a "TCI State ID". Here, the length of each TCI State ID field may be 7 bits, and its value may be any integer from 0 to 127. The value i of the TCI State ID field indicates that the TCI state with TCI State ID i is activated and mapped to a code point in the DCI Transmission Configuration Indicator field. The code point in the DCI Transmission Configuration Indicator field to which a TCI state can be mapped may be determined by its ordinal position among all TCI states activated by the TCI State ID field, i.e., the first TCI state with the lowest TCI State ID is mapped to code point value 0, the second TCI state with the second lowest TCI State ID is mapped to code point value 1, and so on. The maximum number of activated TCI states may be 8. Here, the number of fields can be variable and may depend on the configured indicators of the reference signal in the RRC IE TCI state, in addition to the RRC parameters tci-StatesToAddModList and tci-StatesToReleaseList in PDSCH-Config.

[0102] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field in the CORESET pool ID. Here, the CORESET pool ID field contains the activated TCI state and T iAlternatively, it indicates that the mapping between the DCI transmission configuration instruction code point set by the TCI status ID field may be specific to the associated ControlResourceSetId, which is configured with the CORESET pool ID. Setting this field to 1 indicates that this MAC CE applies to downlink receptions scheduled by a CORESET with a CORESET pool ID equal to 1; otherwise, this MAC CE applies to downlink receptions scheduled by a CORESET pool ID equal to 0.

[0103] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the activated TCI state can be associated. A non-serving cell may be a cell with a different PCI than the serving cell. Furthermore, non-serving cell information may be determined by the RRC configuration and may be specified in the SSB in the RRC IE TCI state, and may include at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Here, the maximum number of additional PCI for non-serving cell information may be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation.

[0104] Two or more additional PCIs for non-serving cell information can be configured by the RRC. Here, if the non-serving cell information is not configured in the index, the value of the index field in the MAC CE can be determined by the order of the additional PCIs for multiple non-serving cell information. For example, a value of 0 in the index field in the MAC CE corresponds to the lowest additional PCI for non-serving cell information, a value of 1 in the index field in the MAC CE corresponds to the second lowest additional PCI for non-serving cell information, and so on. For example, a value of 0 in the index field in the MAC CE indicates a serving cell PCI, a value of 1 in the index field in the MAC CE indicates the lowest additional PCI for non-serving cell information, a value of 2 in the index field in the MAC CE indicates the second lowest additional PCI for non-serving cell information, and so on.

[0105] Furthermore, if non-serving cell information is comprised of an index, the index field in MAC CE may be specific to the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be equal to the value of the index configured in the non-serving cell information + 1. Here, the number of configured TCI states associated with the non-serving cell information may be exclusive to one additional PCI and depends on the reported UE capability.

[0106] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate that the activated TCI state is identified by a configured indicator of a reference signal in the RRC IE TCI state. Here, the reference signal may be SSB or CSI-RS. Furthermore, the configured indicator may indicate that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information items may be two or more. Here, the indicator field in the MAC CE may be the same as, or equal to, the configured indicator of the reference signal in the RRC IE TCI state. The indicator field in the MAC CE may only be present when the activated TCI state can be associated with non-serving cell information.

[0107] Figure 9 illustrates the fifth state instruction in this implementation. As illustrated using the example in Figure 9, the exemplary state instruction 900 may include an identifier octet 910, a configuration octet 920, and a TCI state identifier octet 930.

[0108] In some embodiments, the UE receives a MAC CE and determines a TCI status indication for downlink reception. Downlink reception can be a PDCCH. The MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0109] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits. This field may be ignored if this MAC CE is applied to a set of serving cells.

[0110] When a UE receives a MAC CE and determines a TCI state indication for downlink reception, the MAC CE may include a CORESET ID field. Here, the CORESET ID field indicates the control resource set identified by the RRC parameter ControlResourceSetId, which may indicate a TCI state. If the field's value can be 0, the field refers to the control resource set configured by the RRC parameter controlResourceSetZero. The field can be 4 bits long. Additionally, the MAC CE may include a TCI State ID field. Here, the TCI State ID indicates the TCI state applicable to the control resource set identified by the RRC parameter TCI-StateId and identified by the CORESET ID field. The field can be 7 bits long. If the CORESET ID field is set to 0, this field indicates the RRC parameter TCI-StateId for the TCI states of the first 64 TCI states configured by the RRC parameters tci-States-ToAddModList and tci-States-ToReleaseList in the PDSCH-Config in the active BWP. If the CORESET ID field can be set to a value other than 0, this field indicates the RRC parameter TCI-State ID, which is composed of the RRC parameters tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList within the controlResourceSet identified by the indicated CORESET ID.

[0111] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include an index field. Furthermore, the index field may indicate non-serving cell information to which the indicated TCI status can be associated. Here, a non-serving cell may be a cell with a different PCI than the serving cell. Furthermore, non-serving cell information may be configured by the RRC and specified in the SSB in the RRC IE TCI status, including at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Here, the configured index indicates non-serving cell information with additional PCI. The maximum number of non-serving cell information items may be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Here, only one non-serving cell information item may be configured by the RRC. If non-serving cell information is not configured with an index, the index field in MAC CE cannot exist. If non-serving cell information is configured with an index, the index field in MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the configured index in the non-serving cell information. Here, the number of configured TCI states associated with the non-serving cell information may be specific to additional PCIs and depends on the reported UE capability.

[0112] When a UE receives a MAC CE and determines a TCI state indication for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate whether the indicated TCI state can be associated with non-serving cell information. Here, the length of the indicator field can be 1 bit, and it is set to 0 or 1. Here, an indicator field set to one of the values ​​of 0 or 1 indicates that the indicated TCI state can be configured in a serving cell, and an indicator field set to the other value indicates that the indicated TCI state can be associated with non-serving cell information. Here, the indicator field may only exist when the indicated TCI state can be associated with non-serving cell information. Here, the indicator field in the MAC CE may be specific to the configured indicator of the reference signal in the RRC IE TCI state. For example, the indicator field in the MAC CE may be the same as or equal to the configured indicator.

[0113] Furthermore, the indicator field may indicate that the indicated TCI state is identified by a configured indicator of the reference signal in the RRC IE TCI state. Here, the reference signal may be SSB or CSI-RS. The configured indicator may indicate that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. Here, the number of configured non-serving cell information may be 1. Here, the indicator field in MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI state. The indicator field in MAC CE may only exist when the activated TCI state can be associated with non-serving cell information.

[0114] In some embodiments, the UE receives the MAC CE and determines the TCI status indication for downlink reception. Downlink reception may be PDCCH. The MAC CE can be identified by a MAC subheader with an LCID or eLCID.

[0115] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include a Serving Cell ID field. Here, the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0116] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field can be 2 bits. This field may be ignored if this MAC CE is applied to a set of serving cells. Here, the MAC CE may include a CORESET ID field. Here, the CORESET ID field indicates a control resource set identified using the RRC parameter ControlResourceSetId, which may indicate a TCI status. If the value of the field is 0, the field refers to a control resource set configured by the RRC parameter controlResourceSetZero. The length of the field can be 4 bits.

[0117] When a UE receives a MAC CE and determines a TCI state indication regarding downlink reception, the MAC CE may include a TCI state ID field. Here, the TCI state ID indicates a TCI state applicable to the control resource set identified by the RRC parameter TCI-StateId and identified by the CORESET ID field. The length of the field can be 7 bits. Here, if the CORESET ID field is set to 0, this field indicates the RRC parameter TCI-StateId for the TCI states of the first 64 TCI states configured by the RRC parameters tci-States-ToAddModList and tci-States-ToReleaseList in the PDSCH-Config in the active BWP. If the CORESET ID field can be set to a non-zero value, this field indicates the RRC parameter TCI-StateId configured by the RRC parameters tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList in the controlResourceSet identified by the indicated CORESET ID.

[0118] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include an index field. Furthermore, the index field indicates non-serving cell information to which the indicated TCI status can be associated. Here, a non-serving cell may be a cell with a PCI different from that of the serving cell. Here, the non-serving cell information can be determined by the RRC configuration and can be specified in the SSB in the RRC IE TCI status, and includes at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. The maximum number of additional PCIs for non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Two or more additional PCIs for non-serving cell information can be configured by the RRC.

[0119] Furthermore, if non-serving cell information is not configured as an index, the value of the index field in MAC CE can be determined by the order of additional PCIs of multiple non-serving cell pieces of information. For example, a value of 0 in the index field in MAC CE corresponds to the lowest additional PCI of the non-serving cell piece of information, a value of 1 in the index field in MAC CE corresponds to the second lowest additional PCI of the non-serving cell piece of information, and so on. For example, a value of 0 in the index field in MAC CE indicates a serving cell PCI, a value of 1 in the index field in MAC CE indicates the lowest additional PCI of the non-serving cell piece of information, a value of 2 in the index field in MAC CE indicates the second lowest additional PCI of the non-serving cell piece of information, and so on. Here, if non-serving cell information is configured as an index, the index field in MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the configured index in the non-serving cell information. For example, the value of the index field in MAC CE may be equal to the value of the configured index in the non-serving cell information + 1. Here, the number of configured TCI states associated with non-serving cell information may be dedicated to one additional PCI and depends on the reported UE capability.

[0120] When a UE receives a MAC CE and determines a TCI state indication for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate whether the indicated TCI state can be associated with non-serving cell information. Here, the length of the indicator field may be 1 bit, and it is set to 0 or 1. Here, an indicator field set to one of the values ​​of 0 or 1 indicates that the indicated TCI state can be configured in a serving cell, and an indicator field set to the other value indicates that the indicated TCI state can be associated with non-serving cell information. Here, the indicator field may only exist when the activated TCI state can be associated with non-serving cell information. The indicator field in the MAC CE may be specific to the configured indicator of the reference signal in the RRC IE TCI state. For example, the indicator field in the MAC CE may be the same as or equal to the configured indicator. Here, the indicator field may indicate that the indicated TCI state is identified by the configured indicator of the reference signal in the RRC IE TCI state. The reference signal may be SSB or CSI-RS. Furthermore, the configured indicator may indicate that the TCI state can be associated with additional PCI or serving cell PCI for non-serving cell information. Here, the number of configured non-serving cell information may be 1. Here, the indicator field in MAC CE may be the same as, or equal to, the configured indicator of the reference signal in the RRC IE TCI state. Here, the indicator field in MAC CE may only exist when the indicated TCI state can be associated with non-serving cell information.

[0121] In some embodiments, the UE receives a MAC CE and determines a TCI status indication for a downlink reception. A downlink reception may be a PDCCH. The MAC CE may be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field. The Serving Cell ID may indicate the identification of the serving cell to which the MAC CE applies. Furthermore, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE applies as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits. This field may be ignored if this MAC CE applies to a set of serving cells. Furthermore, the MAC CE may include a CORESET ID field. Here, the CORESET ID field indicates a control resource set identified using the RRC parameter ControlResourceSetId, which may indicate a TCI status. If the value of the field is 0, the field refers to a control resource set configured by the RRC parameter controlResourceSetZero. The length of the field may be 4 bits.

[0122] When a UE receives a MAC CE and determines a TCI state indication regarding downlink reception, the MAC CE may include a TCI state ID field. Here, the TCI state ID indicates a TCI state applicable to the control resource set identified by the RRC parameter TCI-StateId and identified by the CORESET ID field. The length of the field can be 7 bits. If the CORESET ID field is set to 0, this field can indicate the RRC parameter TCI-StateId for the TCI state of the first 64 TCI states configured by the RRC parameters tci-States-ToAddModList and tci-States-ToReleaseList in the PDSCH-Config in the active BWP. If the CORESET ID field can be set to a non-zero value, this field indicates the RRC parameter TCI-StateId configured by the RRC parameters tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList in the controlResourceSet identified by the indicated CORESET ID.

[0123] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the indicated TCI status can be associated. A non-serving cell may be a cell with a PCI different from that of the serving cell. Non-serving cell information can be configured by the RRC and can be specified in the SSB in the RRC IE TCI status and may include at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Here, the configured index indicates non-serving cell information with additional PCI. Here, the maximum number of non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Here, only one non-serving cell information can be configured by the RRC. Here, if non-serving cell information is not configured with an index, the index field in MAC CE cannot exist. If non-serving cell information is configured with an index, the index field in MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the configured index in the non-serving cell information. Here, the number of configured TCI states associated with non-serving cell information may be specific to additional PCIs and depends on the reported UE capability.

[0124] When a UE receives a MAC CE and determines a TCI status indication for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate that the indicated TCI status is identified by a configured indicator of a reference signal in the RRC IE TCI status. The reference signal may be SSB or CSI-RS. Here, the configured indicator indicates that the TCI status can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information items may be two or more. Here, the indicator field in the MAC CE may be the same as, or equal to, the configured indicator of the reference signal in the RRC IE TCI status. Here, the indicator field in the MAC CE may only be present when the activated TCI status can be associated with non-serving cell information.

[0125] In some embodiments, the UE receives a MAC CE and determines a TCI status indication for downlink reception. Downlink reception can be a PDCCH. The MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0126] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits. This field may be ignored if this MAC CE is applied to a set of serving cells.

[0127] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include a CORESET ID field. Here, the CORESET ID field indicates the control resource set identified using the RRC parameter ControlResourceSetId, which may indicate the TCI status. If the field's value is 0, it refers to the control resource set configured by the RRC parameter controlResourceSetZero. The field can be 4 bits long.

[0128] When a UE receives a MAC CE and determines a TCI state indication regarding downlink reception, the MAC CE may include a TCI state ID field. Here, the TCI state ID indicates a TCI state applicable to the control resource set identified by the RRC parameter TCI-StateId and identified by the CORESET ID field. The length of the field can be 7 bits. If the CORESET ID field is set to 0, this field indicates the RRC parameter TCI-StateId for the TCI states of the first 64 TCI states configured by the RRC parameters tci-States-ToAddModList and tci-States-ToReleaseList in the PDSCH-Config in the active BWP. If the CORESET ID field can be set to a non-zero value, this field indicates the RRC parameter TCI-StateId configured by the RRC parameters tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList in the controlResourceSet identified by the indicated CORESET ID.

[0129] When a UE receives a MAC CE and determines a TCI status indication regarding downlink reception, the MAC CE may include an index field. Furthermore, the index field may indicate non-serving cell information to which the indicated TCI status can be associated. Here, a non-serving cell may be a cell with a PCI different from that of the serving cell. Non-serving cell information can be determined by the RRC configuration and can be specified in the SSB in the RRC IE TCI status, and may include at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Furthermore, the maximum number of additional PCIs for non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Here, two or more additional PCIs for non-serving cell information can be configured by the RRC.

[0130] Furthermore, if non-serving cell information is not configured as an index, the value of the index field in MAC CE can be determined by the order of additional PCIs of multiple non-serving cell pieces of information. For example, a value of 0 in the index field in MAC CE corresponds to the lowest additional PCI of the non-serving cell piece of information, a value of 1 in the index field in MAC CE corresponds to the second lowest additional PCI of the non-serving cell piece of information, and so on. For example, a value of 0 in the index field in MAC CE indicates a serving cell PCI, a value of 1 in the index field in MAC CE indicates the lowest additional PCI of the non-serving cell piece of information, a value of 2 in the index field in MAC CE indicates the second lowest additional PCI of the non-serving cell piece of information, and so on. Here, if non-serving cell information is configured as an index, the index field in MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the configured index in the non-serving cell information. For example, the value of the index field in MAC CE may be equal to the value of the configured index in the non-serving cell information + 1. Here, the number of configured TCI states associated with non-serving cell information may be dedicated to one additional PCI and depends on the reported UE capability.

[0131] When a UE receives a MAC CE and determines a TCI status indication for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate that the indicated TCI status is identified by a configured indicator of a reference signal in the RRC IE TCI status. The reference signal may be SSB or CSI-RS. Here, the configured indicator indicates that the TCI status can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information items may be two or more. The indicator field in the MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI status. The indicator field in the MAC CE may only be present when the activated TCI status can be associated with non-serving cell information.

[0132] Figure 10 illustrates the sixth state instruction according to this implementation. As illustrated using the example in Figure 10, the exemplary state instruction 1000 may include TTT. The state instruction 1000 may include an identifier octet 1010, a first constituent octet 1020, a second constituent octet 1022, a third constituent octet 1024, a first TCI state identifier octet 1030, and a second TCI state identifier octet 1032. It should be understood that the number of TCI state identifier octets may be greater than or less than the number illustrated using the examples herein.

[0133] In some embodiments, the UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding the downlink reception. Here, the downlink reception may be SP (semi-persistent) CSI-RS / CSI-IM (interference measurement). Here, the MAC CE may be identified by a MAC subheader with an LCID or eLCID.

[0134] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a Serving Cell ID field. Here, the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0135] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field indicating whether the indicated SP CSI-RS and CSI-IM resource sets should be activated or deactivated. Here, the field can be set to 1 to indicate activation, otherwise the field can indicate deactivation.

[0136] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits.

[0137] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field for the SP CSI-RS resource set ID. Here, this field contains an index of the NZP-CSI-RS-ResourceSet that contains the semi-persistent NZP CSI-RS resources to indicate the semi-persistent NZP CSI-RS resource set to be activated or deactivated. The length of the field may be 6 bits.

[0138] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include an IM field. Here, the IM field indicates the presence of an octet containing the SP CSI-IM resource set ID field. If this field can be set to 1, an octet containing the SP CSI-IM resource set ID field can exist. If this field is set to 0, an octet containing the SP CSI-IM resource set ID field cannot exist.

[0139] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field for the SP CSI-IM resource set ID. Here, this field contains an index of the CSI-IM-ResourceSet that contains the semi-persistent CSI-IM resources to indicate the semi-persistent CSI-IM resource set to be activated or deactivated. The length of the field may be 6 bits.

[0140] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may contain one or more fields indicating the activation or deactivation status of a TCI state that can be used as a QCL source for a resource in a semi-persistent NZP CSI-RS resource set, which is comprised of the RRC parameter TCI-State ID i and indicated by the SP CSI-RS Resource Set ID field. If the A / D field is set to 0, the field cannot exist. Furthermore, one or more fields may be bitmaps, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. iThe field can be set to 1 to indicate that a TCI state with TCI-state ID i is activated and mapped to the code point of the DCI transmission configuration instruction field, T i The field is set to 0 to indicate that the TCI state with TCI-state ID i is deactivated and cannot be mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which the TCI state can be mapped is set to 1. i It can be determined by its ordinal position among all TCI states with fields, i.e., T set to 1. i The first TCI state with a field is mapped to code point value 0, and T is set to 1. i A second TCI state accompanied by a field is mapped to code point value 1, and so on. Furthermore, one or more fields may be one or more code points, each field may be represented as a "TCI state ID".

[0141] The value i in the TCI State ID field indicates that the TCI state with TCI State ID i is activated and mapped to a code point in the DCI Transmission Configuration Indicator field. The code point in the DCI Transmission Configuration Indicator field to which the TCI state can be mapped can be determined by its ordinal position among all TCI states activated by the TCI State ID field, namely, the first TCI state with the lowest TCI State ID is mapped to code point value 0, the second TCI state with the second lowest TCI State ID is mapped to code point value 1, and so on.

[0142] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the activated TCI state can be associated. A non-serving cell may be a cell with a different PCI than the serving cell. Non-serving cell information can be configured by the RRC and can be specified in the SSB in the RRC IE TCI state, and may include at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Here, the configured index indicates non-serving cell information with additional PCI. Furthermore, the maximum number of non-serving cell information items can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Here, only one non-serving cell information item can be configured by the RRC. If non-serving cell information is not configured with an index, the index field in MAC CE cannot exist. If non-serving cell information is configured with an index, the index field in MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the configured index in the non-serving cell information. Here, the number of configured TCI states associated with the non-serving cell information may be specific to additional PCIs and depends on the reported UE capability.

[0143] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate whether an activated TCI state can be associated with non-serving cell information. Here, the length of the indicator field may be 1 bit, and it is set to 0 or 1. Here, an indicator field set to one of the values ​​of 0 or 1 indicates that an activated TCI state can be configured in a serving cell, and an indicator field set to the other value indicates that an activated TCI state can be associated with non-serving cell information. Here, the indicator field may only exist when an activated TCI state can be associated with non-serving cell information. The indicator field in the MAC CE may be specific to the configured indicator of the reference signal in the RRC IE TCI state. For example, the indicator field in the MAC CE may be the same as or equal to the configured indicator. Here, the indicator field may indicate that an activated TCI state is identified by the configured indicator of the reference signal in the RRC IE TCI state. The reference signal can be SSB or CSI-RS. Furthermore, the configured indicators indicate that the TCI state can be associated with additional PCI or serving cell PCI for non-serving cell information. Here, the number of configured non-serving cell information items can be 1. The indicator field in MAC CE can be the same as, or equal to, the configured indicator for the reference signal in the RRC IE TCI state. The indicator field in MAC CE can only exist when the activated TCI state can be associated with non-serving cell information.

[0144] In some embodiments, the UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding the downlink reception. Here, the downlink reception may be an SP (semi-persistent) CSI-RS / CSI-IM (interference measurement). Here, the MAC CE may be identified by a MAC subheader with an LCID or eLCID. Here, the MAC CE may include a field for Serving Cell ID. The Serving Cell ID indicates the identification of the serving cell to which the MAC CE applies. Here, the MAC CE may include a field indicating whether the indicated SP CSI-RS and CSI-IM resource set should be activated or deactivated. Here, the field may be set to 1 to indicate activation, otherwise it indicates deactivation.

[0145] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits.

[0146] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field for SP CSI-RS resource set ID. Here, this field includes an index of the NZP-CSI-RS-ResourceSet containing the semi-persistent NZP CSI-RS resource to indicate the semi-persistent NZP CSI-RS resource set to be activated or deactivated. The length of the field may be 6 bits. In addition, the MAC CE may include an IM field. The IM field may indicate the existence of an octet containing the SP CSI-IM resource set ID field. If this field can be set to 1, an octet containing the SP CSI-IM resource set ID field can exist. If this field is set to 0, an octet containing the SP CSI-IM resource set ID field cannot exist.

[0147] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field for the SP CSI-IM resource set ID. Here, this field contains an index of the CSI-IM-ResourceSet that contains the semi-persistent CSI-IM resources to indicate the semi-persistent CSI-IM resource set to be activated or deactivated. The length of the field may be 6 bits.

[0148] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may contain one or more fields indicating the activation or deactivation status of a TCI state that can be used as a QCL source for a resource in a semi-persistent NZP CSI-RS resource set, which is comprised of the RRC parameter TCI-State ID i and indicated by the SP CSI-RS Resource Set ID field. If the A / D field is set to 0, the field cannot exist. Furthermore, one or more fields may be bitmaps, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that a TCI state with TCI-state ID i is activated and mapped to the code point of the DCI transmission configuration instruction field, T i The field is set to 0 to indicate that the TCI state with TCI-state ID i is deactivated and cannot be mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which the TCI state can be mapped is set to 1. i It can be determined by its ordinal position among all TCI states with fields, i.e., T set to 1. i The first TCI state with a field is mapped to code point value 0, and T is set to 1. iA second TCI state accompanied by a field is mapped to a code point value of 1, and so on. Furthermore, one or more fields may be one or more code points, each field may be indicated as a "TCI state ID". The value i of the TCI state ID field may indicate that a TCI state accompanied by TCI state ID i is activated and mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which a TCI state can be mapped can be determined by its ordinal position among all TCI states activated by the TCI state ID field, namely, the first TCI state accompanied by the lowest TCI state ID is mapped to a code point value of 0, the second TCI state accompanied by the second lowest TCI state ID is mapped to a code point value of 1, and so on.

[0149] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the activated TCI state can be associated. Here, a non-serving cell may be a cell with a PCI different from that of the serving cell. Non-serving cell information can be determined by the RRC configuration and can be specified in the SSB in the RRC IE TCI state and includes at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. The maximum number of additional PCIs for non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Here, two or more additional PCIs for non-serving cell information can be configured by the RRC. If non-serving cell information is not included in the index, the value of the index field in MAC CE can be determined by the order of additional PCIs for multiple non-serving cell pieces of information. For example, a value of 0 in the index field in MAC CE corresponds to the lowest additional PCI for the non-serving cell piece of information, a value of 1 in the index field in MAC CE corresponds to the second lowest additional PCI for the non-serving cell piece of information, and so on. For example, a value of 0 in the index field in MAC CE indicates a serving cell PCI, a value of 1 in the index field in MAC CE indicates the lowest additional PCI for the non-serving cell piece of information, a value of 2 in the index field in MAC CE indicates the second lowest additional PCI for the non-serving cell piece of information, and so on.

[0150] Furthermore, if non-serving cell information is comprised of an index, the index field in MAC CE may be specific to the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be equal to the value of the index configured in the non-serving cell information + 1. Here, the number of configured TCI states associated with the non-serving cell information may be exclusive to one additional PCI and depends on the reported UE capability.

[0151] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate whether an activated TCI state can be associated with non-serving cell information. Here, the length of the indicator field can be 1 bit, and it is set to 0 or 1. Here, an indicator field set to one of the values ​​of 0 or 1 indicates that an activated TCI state can be configured in a serving cell, and an indicator field set to the other value indicates that an activated TCI state can be associated with non-serving cell information. The indicator field may only exist when an activated TCI state can be associated with non-serving cell information. The indicator field in the MAC CE may be specific to the configured indicator of the reference signal in the RRC IE TCI state. For example, the indicator field in the MAC CE may be the same as or equal to the configured indicator.

[0152] Furthermore, the indicator field may indicate that the activated TCI state is identified by a configured indicator of the reference signal in the RRC IE TCI state. The reference signal may be SSB or CSI-RS. Here, the configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information may be 1. Here, the indicator field in MAC CE may be the same as, or equal to, the configured indicator of the reference signal in the RRC IE TCI state. Here, the indicator field in MAC CE may only exist when the activated TCI state can be associated with non-serving cell information.

[0153] In some embodiments, the UE receives the MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception.

[0154] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the downlink reception may be SP (semi-persistent) CSI-RS / CSI-IM (interference measurement). Here, the MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0155] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field indicating whether the indicated SP CSI-RS and CSI-IM resource sets should be activated or deactivated. Here, the field can be set to 1 to indicate activation, otherwise it indicates deactivation. When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE applies as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits.

[0156] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field for the SP CSI-RS resource set ID. Here, this field contains an index of the NZP-CSI-RS-ResourceSet that contains the semi-persistent NZP CSI-RS resources to indicate the semi-persistent NZP CSI-RS resource set to be activated or deactivated. The length of the field may be 6 bits.

[0157] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include an IM field. Here, the IM field indicates the presence of an octet containing the SP CSI-IM resource set ID field. If this field can be set to 1, an octet containing the SP CSI-IM resource set ID field can exist. If this field is set to 0, an octet containing the SP CSI-IM resource set ID field cannot exist.

[0158] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field for the SP CSI-IM resource set ID. Here, this field contains an index of the CSI-IM-ResourceSet that contains the semi-persistent CSI-IM resources to indicate the semi-persistent CSI-IM resource set to be activated or deactivated. The length of the field may be 6 bits.

[0159] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may contain one or more fields indicating the activation or deactivation status of a TCI state that can be used as a QCL source for a resource in a semi-persistent NZP CSI-RS resource set, which is comprised of the RRC parameter TCI-State ID i and indicated by the SP CSI-RS Resource Set ID field. If the A / D field is set to 0, the field cannot exist. Here, one or more fields may be a bitmap, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that a TCI state with TCI-state ID i is activated and mapped to the code point of the DCI transmission configuration instruction field, T i The field is set to 0 to indicate that the TCI state with TCI-state ID i is deactivated and cannot be mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which the TCI state can be mapped is set to 1. i It can be determined by its ordinal position among all TCI states with fields, i.e., T set to 1. iThe first TCI state with a field is mapped to code point value 0, and T is set to 1. i A second TCI state accompanied by a field is mapped to a code point value of 1, and so on. Here, one or more fields may be one or more code points, each field may be denoted as a "TCI state ID". A value i in the TCI state ID field may indicate that a TCI state accompanied by TCI state ID i is activated and mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which a TCI state can be mapped can be determined by its ordinal position among all TCI states activated by the TCI state ID field, namely, the first TCI state accompanied by the lowest TCI state ID is mapped to a code point value of 0, the second TCI state accompanied by the second lowest TCI state ID is mapped to a code point value of 1, and so on.

[0160] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the activated TCI state can be associated. Here, a non-serving cell may be a cell with a PCI different from that of the serving cell. Here, non-serving cell information may be configured by the RRC and may be specified in the SSB in the RRC IE TCI state, and may include at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Here, the configured index indicates non-serving cell information with additional PCI. Furthermore, the maximum number of non-serving cell information may be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Here, only one non-serving cell information may be configured by the RRC. If non-serving cell information is not configured with an index, the index field in the MAC CE cannot exist. If non-serving cell information is configured with an index, the index field in the MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in the MAC CE may be the same as the configured index in the non-serving cell information. Here, the number of configured TCI states associated with the non-serving cell information may be specific to additional PCI and depends on the reported UE capability. If the UE receives the MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include an indicator field.Here, the indicator field may indicate that the activated TCI state is identified by a configured indicator of the reference signal in the RRC IE TCI state. The signal may be SSB or CSI-RS. The configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information items may be two or more. The indicator field in MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI state. Here, the indicator field in MAC CE may only exist when the activated TCI state can be associated with non-serving cell information.

[0161] In some embodiments, the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception. When the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the downlink reception may be SP (semi-persistent) CSI-RS / CSI-IM (interference measurement). When the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the MAC CE may be identified by a MAC subheader with an LCID or eLCID. When the UE receives a MAC CE and determines the activation or deactivation status of the TCI state for downlink reception, the MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0162] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field indicating whether the indicated SP CSI-RS and CSI-IM resource sets should be activated or deactivated. Here, the field can be set to 1 to indicate activation, otherwise it indicates deactivation. When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE applies as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits.

[0163] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field for the SP CSI-RS resource set ID. Here, this field contains an index of the NZP-CSI-RS-ResourceSet that contains the semi-persistent NZP CSI-RS resources to indicate the semi-persistent NZP CSI-RS resource set to be activated or deactivated. The length of the field may be 6 bits.

[0164] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include an IM field. Here, the IM field indicates the presence of an octet containing the SP CSI-IM resource set ID field. If this field can be set to 1, an octet containing the SP CSI-IM resource set ID field can exist. If this field is set to 0, an octet containing the SP CSI-IM resource set ID field cannot exist.

[0165] When a UE receives a MAC CE and determines the activation or deactivation status of the TCI state regarding downlink reception, the MAC CE may include a field for the SP CSI-IM resource set ID. Here, this field contains an index of the CSI-IM-ResourceSet that contains the semi-persistent CSI-IM resources to indicate the semi-persistent CSI-IM resource set to be activated or deactivated. The length of the field may be 6 bits.

[0166] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may contain one or more fields indicating the activation or deactivation status of a TCI state that can be used as a QCL source for a resource in a semi-persistent NZP CSI-RS resource set, which is comprised of the RRC parameter TCI-State ID i and indicated by the SP CSI-RS Resource Set ID field. If the A / D field is set to 0, the field cannot exist.

[0167] Here, one or more fields may be bitmaps, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that a TCI state with TCI-state ID i is activated and mapped to the code point of the DCI transmission configuration instruction field, T i The field is set to 0 to indicate that the TCI state with TCI-state ID i is deactivated and cannot be mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which the TCI state can be mapped is set to 1. iIt can be determined by its ordinal position among all TCI states with fields, i.e., T set to 1. i The first TCI state with a field is mapped to code point value 0, and T is set to 1. i A second TCI state accompanied by a field is mapped to a code point value of 1, and so on. Here, one or more fields may be one or more code points, each field may be denoted as a "TCI state ID". A value i in the TCI state ID field may indicate that a TCI state accompanied by TCI state ID i is activated and mapped to a code point in the DCI transmission configuration instruction field. The code point in the DCI transmission configuration instruction field to which a TCI state can be mapped can be determined by its ordinal position among all TCI states activated by the TCI state ID field, namely, the first TCI state accompanied by the lowest TCI state ID is mapped to a code point value of 0, the second TCI state accompanied by the second lowest TCI state ID is mapped to a code point value of 1, and so on.

[0168] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state regarding downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the activated TCI state can be associated. A non-serving cell may be a cell with a PCI different from that of a serving cell. Non-serving cell information can be determined by the RRC configuration and can be specified in the SSB in the RRC IE TCI state and may include at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Furthermore, the maximum number of additional PCIs for non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Two or more additional PCIs for non-serving cell information can be configured by the RRC.

[0169] Here, if non-serving cell information is not included in the index, the value of the index field in MAC CE can be determined by the order of additional PCIs of multiple non-serving cell pieces of information. For example, a value of 0 in the index field in MAC CE corresponds to the lowest additional PCI of the non-serving cell piece of information, a value of 1 in the index field in MAC CE corresponds to the second lowest additional PCI of the non-serving cell piece of information, and so on. For example, a value of 0 in the index field in MAC CE indicates a serving cell PCI, a value of 1 in the index field in MAC CE indicates the lowest additional PCI of the non-serving cell piece of information, a value of 2 in the index field in MAC CE indicates the second lowest additional PCI of the non-serving cell piece of information, and so on.

[0170] Furthermore, if non-serving cell information is comprised of an index, the index field in MAC CE may be specific to the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be equal to the value of the index configured in the non-serving cell information + 1. Here, the number of configured TCI states associated with the non-serving cell information may be exclusive to one additional PCI and depends on the reported UE capability.

[0171] When a UE receives a MAC CE and determines the activation or deactivation status of a TCI state for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate that the activated TCI state is identified by a configured indicator of a reference signal in the RRC IE TCI state. The reference signal may be SSB or CSI-RS. The configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. Here, the number of configured non-serving cell information may be two or more. The indicator field in the MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI state. The indicator field in the MAC CE may only be present when the activated TCI state can be associated with non-serving cell information.

[0172] Figure 11 illustrates the seventh state instruction according to this implementation. As illustrated using the example in Figure 11, the exemplary state instruction 1100 may include an identifier octet 1110, a configuration octet 1120, a first TCI state octet 1130, a second TCI state octet 1132, and a third TCI state octet 1134. It should be understood that the number of TCI state octets may be greater than or less than the number illustrated using the examples herein.

[0173] In some embodiments, the UE receives a MAC CE and determines a non-periodic CSI trigger state subselection for downlink reception. Downlink reception may be non-periodic CSI-RS. The MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field. The Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0174] When a UE receives a MAC CE and determines a non-periodic CSI trigger state subselection for downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI bandwidth partial indicator field. The length of the BWP ID field may be 2 bits.

[0175] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger states for downlink reception, the MAC CE may include one or more fields indicating the selection status of the aperiodic trigger states configured in the RRC parameter aperiodicTriggerStateList. Here, one or more fields may be a bitmap, and each field is "T i It can be expressed as ". Each T i The field length can be 1 bit, and its value is set to 0 or 1. iThe field can be set to 1 to indicate that the aperiodic trigger state i is mapped to the code point of the DCI CSI request field, and T i The field is set to 0 to indicate that the aperiodic trigger state i is not mapped to a code point in the DCI CSI request field. The code point in the DCI CSI request field to which the aperiodic trigger state can be mapped is set to 1. i It can be determined by its ordinal position among all aperiodic trigger states with fields, i.e., T set to 1. i The first non-periodic trigger state with a field is mapped to a code point value of 0, and T is set to 1. i The second non-periodic trigger state accompanied by a field is mapped to code point value 1, and so on.

[0176] Furthermore, one or more fields may be one or more code points, each field may be represented as an "Aperiodic Trigger State ID". The value i of the Aperiodic Trigger State ID field may indicate that an aperiodic trigger state with CSI-ReportConfigId i is selected and mapped to a code point in the DCI CSI Request field. The code point in the DCI CSI Request field to which an aperiodic trigger state can be mapped may be determined by its ordinal position among all aperiodic trigger states selected by the Aperiodic Trigger State ID field, i.e., the first aperiodic trigger state with the lowest Aperiodic Trigger State ID is mapped to code point value 0, the second aperiodic trigger state with the second lowest Aperiodic Trigger State ID is mapped to code point value 1, and so on.

[0177] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger state for downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the selected aperiodic trigger state TCI state can be associated. Here, a non-serving cell may be a cell with a PCI different from that of a serving cell. Here, non-serving cell information may be configured by the RRC and may be defined in the SSB in the RRC IE TCI state and may include at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Here, the configured index indicates non-serving cell information with additional PCI. The maximum number of non-serving cell information may be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation.

[0178] Furthermore, only one non-serving cell information can be configured by the RRC. Here, if the non-serving cell information is not configured with an index, the index field in the MAC CE cannot exist. If the non-serving cell information is configured with an index, the index field in the MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in the MAC CE may be the same as the configured index in the non-serving cell information. Here, the number of configured TCI states associated with the non-serving cell information may be specific to additional PCIs and depends on the reported UE capabilities.

[0179] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger state for downlink reception, the MAC CE may include an indicator field. Furthermore, the indicator field may indicate whether the TCI state of the selected aperiodic trigger state can be associated with non-serving cell information. The length of the indicator field can be 1 bit, and it is set to either 0 or 1. Here, an indicator field set to one of the values ​​0 or 1 indicates that the activated TCI state can be configured in a serving cell, while an indicator field set to the other value indicates that the activated TCI state can be associated with non-serving cell information. The indicator field may only exist when the TCI state of the selected aperiodic trigger state can be associated with non-serving cell information. The indicator field in the MAC CE may be specific to the configured indicator of the reference signal in the RRC IE TCI state. For example, the indicator field in the MAC CE may be the same as, or equal to, the configured indicator. Here, the indicator field may indicate that the TCI state of the selected aperiodic trigger state can be identified by a configured indicator of the reference signal in the RRC IE TCI state. The reference signal may be SSB or CSI-RS. The configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information may be 1. The indicator field in MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI state. Here, the indicator field in MAC CE may only exist when the TCI state of the selected aperiodic trigger state can be associated with non-serving cell information.

[0180] In some embodiments, the UE receives a MAC CE and determines a non-periodic CSI trigger state subselection for downlink reception. Downlink reception may be non-periodic CSI-RS. The MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0181] When a UE receives a MAC CE and determines a non-periodic CSI trigger state subselection for downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI bandwidth partial indicator field. The length of the BWP ID field may be 2 bits.

[0182] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger states for downlink reception, the MAC CE may include one or more fields indicating the selection status of the aperiodic trigger states configured in the RRC parameter aperiodicTriggerStateList. Furthermore, one or more fields may be bitmaps, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that the aperiodic trigger state i is mapped to the code point of the DCI CSI request field, and T i The field is set to 0 to indicate that the aperiodic trigger state i is not mapped to a code point in the DCI CSI request field. The code point in the DCI CSI request field to which the aperiodic trigger state can be mapped is set to 1. iIt can be determined by its ordinal position among all aperiodic trigger states with fields, i.e., T set to 1. i The first non-periodic trigger state with a field is mapped to a code point value of 0, and T is set to 1. i The second non-periodic trigger state accompanied by a field is mapped to code point value 1, and so on.

[0183] Furthermore, one or more fields may be one or more code points, each field may be represented as an "Aperiodic Trigger State ID". The value i of the Aperiodic Trigger State ID field indicates that an aperiodic trigger state with CSI-ReportConfigId i is selected and mapped to a code point in the DCI CSI Request field. The code point in the DCI CSI Request field to which an aperiodic trigger state can be mapped may be determined by its ordinal position among all aperiodic trigger states selected by the Aperiodic Trigger State ID field, i.e., the first aperiodic trigger state with the lowest Aperiodic Trigger State ID is mapped to code point value 0, the second aperiodic trigger state with the second lowest Aperiodic Trigger State ID is mapped to code point value 1, and so on.

[0184] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger state for downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the selected aperiodic trigger state TCI state can be associated. A non-serving cell may be a cell with a PCI different from that of a serving cell. Non-serving cell information can be determined by the RRC configuration and can be specified in the SSB in the RRC IE TCI state and includes at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Furthermore, the maximum number of additional PCIs for non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Two or more additional PCIs for non-serving cell information can be configured by the RRC.

[0185] Furthermore, if non-serving cell information is not included in the index, the value of the index field in MAC CE can be determined by the order of additional PCIs of multiple non-serving cell pieces of information. For example, a value of 0 in the index field in MAC CE corresponds to the lowest additional PCI of the non-serving cell piece of information, a value of 1 in the index field in MAC CE corresponds to the second lowest additional PCI of the non-serving cell piece of information, and so on. For example, a value of 0 in the index field in MAC CE indicates a serving cell PCI, a value of 1 in the index field in MAC CE indicates the lowest additional PCI of the non-serving cell piece of information, a value of 2 in the index field in MAC CE indicates the second lowest additional PCI of the non-serving cell piece of information, and so on.

[0186] Furthermore, if non-serving cell information is comprised of an index, the index field in MAC CE may be specific to the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be equal to the value of the index configured in the non-serving cell information + 1. Here, the number of configured TCI states associated with the non-serving cell information may be exclusive to one additional PCI and depends on the reported UE capability.

[0187] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger state for downlink reception, the MAC CE may include an indicator field. Furthermore, the indicator field may indicate whether the selected aperiodic trigger state's TCI state can be associated with non-serving cell information. The length of the indicator field can be 1 bit, and it is set to either 0 or 1. Here, an indicator field set to one of the values ​​0 or 1 indicates that the selected aperiodic trigger state's TCI state can be configured in a serving cell, while an indicator field set to the other value indicates that the selected aperiodic trigger state's TCI state can be associated with non-serving cell information. The indicator field may only exist when the selected aperiodic trigger state's TCI state can be associated with non-serving cell information. The indicator field in the MAC CE may be specific to the configured indicator of the reference signal in the RRC IE TCI state. For example, the indicator field in the MAC CE may be the same as, or equal to, the configured indicator.

[0188] Furthermore, the indicator field may indicate that the TCI state of the selected aperiodic trigger state can be identified by a configured indicator of the reference signal in the RRC IE TCI state. The reference signal may be SSB or CSI-RS. Here, the configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. Here, the number of configured non-serving cell information may be 1. The indicator field in MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI state. The indicator field in MAC CE may only exist when the TCI state of the selected aperiodic trigger state can be associated with non-serving cell information.

[0189] In some embodiments, the UE receives a MAC CE and determines a non-periodic CSI trigger state subselection for downlink reception. Downlink reception may be non-periodic CSI-RS. The MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies.

[0190] When a UE receives a MAC CE and determines a non-periodic CSI trigger state subselection for downlink reception, the MAC CE may include a BWP ID field. Here, the BWP ID field indicates the DL BWP to which the MAC CE is applied as a code point in the DCI bandwidth partial indicator field. The length of the BWP ID field may be 2 bits.

[0191] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger states for downlink reception, the MAC CE may include one or more fields indicating the selection status of the aperiodic trigger states configured in the RRC parameter aperiodicTriggerStateList. Furthermore, one or more fields may be bitmaps, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that the aperiodic trigger state i is mapped to the code point of the DCI CSI request field, and T i The field is set to 0 to indicate that the aperiodic trigger state i is not mapped to a code point in the DCI CSI request field. The code point in the DCI CSI request field to which the aperiodic trigger state can be mapped is set to 1. i It can be determined by its ordinal position among all aperiodic trigger states with fields, i.e., T set to 1. i The first non-periodic trigger state with a field is mapped to a code point value of 0, and T is set to 1. iA second aperiodic trigger state accompanied by a field shall be mapped to a code point value of 1, and so on. One or more fields may be one or more code points, each field may be represented as an "aperiodic trigger state ID". The value i of the aperiodic trigger state ID field may indicate that an aperiodic trigger state accompanied by CSI-ReportConfigId i is selected and mapped to a code point in the DCI CSI request field. The code point in the DCI CSI request field to which an aperiodic trigger state can be mapped may be determined by its ordinal position among all aperiodic trigger states selected by the aperiodic trigger state ID field, i.e., the first aperiodic trigger state accompanied by the lowest aperiodic trigger state ID shall be mapped to a code point value of 0, the second aperiodic trigger state accompanied by the second lowest aperiodic trigger state ID shall be mapped to a code point value of 1, and so on.

[0192] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger state for downlink reception, the MAC CE may include an index field. Furthermore, the index field indicates non-serving cell information to which the selected aperiodic trigger state TCI state can be associated. A non-serving cell may be a cell with a different PCI than the serving cell. Non-serving cell information can be configured by the RRC and can be defined in the SSB in the RRC IE TCI state, and includes at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. Here, the configured index indicates non-serving cell information with additional PCI. The maximum number of non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Here, only one non-serving cell information can be configured by the RRC. If non-serving cell information is not configured with an index, the index field in MAC CE cannot exist. If non-serving cell information is configured with an index, the index field in MAC CE may be specific to the configured index in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the configured index in the non-serving cell information. Here, the number of configured TCI states associated with the non-serving cell information may be specific to additional PCIs and depends on the reported UE capability.

[0193] When a UE receives a MAC CE and determines a subselection of an aperiodic CSI trigger state for downlink reception, the MAC CE may include an indicator field. Furthermore, the indicator field may indicate that the TCI state of the selected aperiodic trigger state can be identified by a configured indicator of a reference signal in the RRC IE TCI state. Here, the reference signal can be SSB or CSI-RS. Here, the configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information items can be two or more. Here, the indicator field in the MAC CE may be the same as, or equal to, the configured indicator of the reference signal in the RRC IE TCI state. Here, the indicator field in the MAC CE may only exist when the TCI state of the selected aperiodic trigger state can be associated with non-serving cell information.

[0194] In some embodiments, the UE receives a MAC CE and determines a non-periodic CSI trigger state subselection for downlink reception. Downlink reception may be non-periodic CSI-RS. The MAC CE can be identified by a MAC subheader with an LCID or eLCID. The MAC CE may include a Serving Cell ID field, where the Serving Cell ID identifies the serving cell to which the MAC CE applies. The MAC CE may also include a BWP ID field, where the BWP ID field indicates the DL BWP to which the MAC CE applies as a code point in the DCI Bandwidth Partial Indicator field. The length of the BWP ID field may be 2 bits.

[0195] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger states for downlink reception, the MAC CE may include one or more fields indicating the selection status of the aperiodic trigger states configured in the RRC parameter aperiodicTriggerStateList. Furthermore, one or more fields may be bitmaps, and each field is "T i It can be expressed as ". Here, each T i The field length can be 1 bit, and its value is set to 0 or 1. i The field can be set to 1 to indicate that the aperiodic trigger state i is mapped to the code point of the DCI CSI request field, and T i The field is set to 0 to indicate that the aperiodic trigger state i is not mapped to a code point in the DCI CSI request field. The code point in the DCI CSI request field to which the aperiodic trigger state can be mapped is set to 1. i It can be determined by its ordinal position among all aperiodic trigger states with fields, i.e., T set to 1. i The first non-periodic trigger state with a field is mapped to a code point value of 0, and T is set to 1. i The second non-periodic trigger state accompanied by a field is mapped to code point value 1, and so on.

[0196] Furthermore, one or more fields may be one or more code points, each field may be represented as an "Aperiodic Trigger State ID". The value i of the Aperiodic Trigger State ID field may indicate that an aperiodic trigger state with CSI-ReportConfigId i is selected and mapped to a code point in the DCI CSI Request field. The code point in the DCI CSI Request field to which an aperiodic trigger state can be mapped may be determined by its ordinal position among all aperiodic trigger states selected by the Aperiodic Trigger State ID field, i.e., the first aperiodic trigger state with the lowest Aperiodic Trigger State ID is mapped to code point value 0, the second aperiodic trigger state with the second lowest Aperiodic Trigger State ID is mapped to code point value 1, and so on.

[0197] When a UE receives a MAC CE and determines a subselection of aperiodic CSI trigger state for downlink reception, the MAC CE may include an index field. Here, the index field indicates non-serving cell information to which the selected aperiodic trigger state TCI state can be associated. Furthermore, a non-serving cell may be a cell with a PCI different from that of a serving cell. Here, the non-serving cell information can be determined by the RRC configuration and may be defined in the SSB in the RRC IE TCI state, including at least one of the following: index, additional PCI different from the serving cell PCI, SSB time domain position, SSB transmission periodicity, or SSB transmission power. The maximum number of additional PCIs for non-serving cell information can be configured by the RRC and depends on the reported UE capability. Here, if the UE reports the maximum number of capability parameters, it means that the UE can support inter-cell MTRP operation. If the UE does not report the maximum number of capability parameters, it means that the UE cannot support inter-cell MTRP operation. Two or more additional PCIs for non-serving cell information can be configured by the RRC. If non-serving cell information is not included in the index, the value of the index field in MAC CE can be determined by the order of additional PCIs for multiple non-serving cell pieces of information. For example, a value of 0 in the index field in MAC CE corresponds to the lowest additional PCI for the non-serving cell piece of information, a value of 1 in the index field in MAC CE corresponds to the second lowest additional PCI for the non-serving cell piece of information, and so on. For example, a value of 0 in the index field in MAC CE indicates a serving cell PCI, a value of 1 in the index field in MAC CE indicates the lowest additional PCI for the non-serving cell piece of information, a value of 2 in the index field in MAC CE indicates the second lowest additional PCI for the non-serving cell piece of information, and so on.

[0198] Furthermore, if non-serving cell information is comprised of an index, the index field in MAC CE may be specific to the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be the same as the index configured in the non-serving cell information. For example, the value of the index field in MAC CE may be equal to the value of the index configured in the non-serving cell information + 1. Here, the number of configured TCI states associated with the non-serving cell information may be exclusive to one additional PCI and depends on the reported UE capability.

[0199] When a UE receives a MAC CE and determines a subselection of an aperiodic CSI trigger state for downlink reception, the MAC CE may include an indicator field. Here, the indicator field may indicate that the TCI state of the selected aperiodic trigger state can be identified by a configured indicator of a reference signal in the RRC IE TCI state. The reference signal may be SSB or CSI-RS. The configured indicator indicates that the TCI state can be associated with additional PCI or serving cell PCI of non-serving cell information. The number of configured non-serving cell information items may be two or more. The indicator field in the MAC CE may be the same as or equal to the configured indicator of the reference signal in the RRC IE TCI state. The indicator field in the MAC CE may only be present when the TCI state of the selected aperiodic trigger state can be associated with non-serving cell information.

[0200] Figure 12 illustrates a first method showing the TCI state under multiple TRP operation according to this implementation. At least one of systems 100 and 200 can implement method 1200 according to this implementation. Method 1200 can be initiated in step 1210.

[0201] In step 1210, the method may receive a first message containing a control element. Step 1210 may include at least one of steps 1212, 1214, 1216, 1220, 1222, 1224, 1226, 1228, 1230, and 1232. In step 1212, the method may receive a first message from the BS by the UE. In step 1214, the method may receive a control element with a field having an indicator. In step 1216, the method may receive a control element with a field having an index. In step 1220, the method may receive a control element with a field indicating the identification of the serving cell associated with the control element. In step 1222, the method may receive a control element with a field indicating a bandwidth partial indicator. In step 1224, the method may receive a control element with one or more fields indicating one or more operational statuses of one or more corresponding TCI states. In step 1226, the method may receive a control element with a field indicating a control resource pool indicator. In step 1228, the method may receive a control element having a field that has an index indicating at least one non-serving cell information unit for at least one corresponding TCI state. In step 1230, the method may receive a control element having a field that indicates whether one or more active TCI states can be associated with corresponding non-serving cell information units. In step 1232, the method may receive a control element having a field that indicates the correspondence of active TCI states to indicators of reference signals in the RRC IE. Method 1200 can then proceed to step 1302.

[0202] Figure 13 illustrates a second method for demonstrating the TCI state under multiple TRP operation, in addition to the method shown in Figure 13. At least one of systems 100 and 200 can implement method 1300 according to this implementation. Method 1300 can be initiated in step 1302. Method 1300 can then proceed to step 1310.

[0203] In step 1310, the method may receive a second message with a control element. Step 1310 may include at least one of steps 1312, 1314, and 1316. In step 1312, the method may receive a second message from the BS by the UE. In step 1314, the method may receive a second message with a radio resource control signal transmission comprising at least one non-serving cell information unit. In step 1316, the method may receive a second message with a selected control element having a field having an index. Method 1300 may then proceed to step 1320.

[0204] In step 1320, the method can identify a control element from the first message. Step 1320 may include at least one of steps 1322 and 1324. In step 1322, the method can identify a control element based on a media access control subheader. In step 1324, the method can identify a control element based on at least one extended logical channel indicator. Method 1300 can then proceed to step 1330.

[0205] In step 1330, the method can determine at least one status of at least one TCI state. Step 1330 may include at least one of steps 1332 and 1334. In step 1332, the method can determine at least one operational status configured by the UE. In step 1334, the method can determine at least one status relating to downlink communication. Method 1300 may terminate in step 1334.

[0206] Figure 14 illustrates a third method for demonstrating the TCI state under multiple TRP operation according to this implementation. At least one of systems 100 and 200 can implement method 1400 according to this implementation. Method 1400 can be initiated in step 1410.

[0207] In step 1410, the method may send a first message with a control element. Step 1410 may include at least one of steps 1412 and 1414. In step 1412, the method may send a first message from the BS to the UE. In step 1414, the method may send a control element with respect to at least one UE to constitute at least one operational status of at least one TCI state. Method 1400 may then proceed to step 1420.

[0208] In step 1420, the method may transmit at least one downlink communication. Step 1420 may include at least one of steps 1422 and 1424. In step 1422, the method may transmit a downlink communication from BS to UE. In step 1424, the method may transmit a downlink communication associated with at least one TCI state. Method 1400 may terminate in step 1420.

[0209] Figure 15 illustrates a fourth method for demonstrating TCI states under multiple TRP operation according to this implementation. At least one of systems 100 and 200 can implement method 1500 according to this implementation. Method 1500 can be started in step 1510. In step 1510, the method can receive a first message containing a control element. Method 1500 can then proceed to step 1520. In step 1520, the method can receive a second message containing a control element. Method 1500 can then proceed to step 1530. In step 1530, the method can identify the control element from the first message. Method 1500 can then proceed to step 1540. In step 1540, the method can determine at least one status of at least one TCI state. Method 1500 can be terminated in step 1540.

[0210] Figure 16 illustrates a fifth method for demonstrating the TCI state under multiple TRP operation according to this implementation. At least one of systems 100 and 200 can implement method 1600 according to this implementation. Method 1600 can be started in step 1610. In step 1610, the method can send a first message with a control element. Method 1600 can then proceed to step 1620. In step 1620, the method can send at least one downlink communication. Method 1600 can be terminated in step 1620.

[0211] The subject matter described herein sometimes illustrates different components that are contained in (or connected to) other different components. It should be understood that such depicted architectures may be illustrative, and in fact, many other architectures that achieve the same functionality may be implemented. In a conceptual sense, any arrangement of components to achieve the same functionality can be, in effect, “associated” in such a way that the desired functionality can be achieved. Thus, any two components in this specification combined to achieve a particular functionality can be considered “associated” with each other in such a way that the desired functionality can be achieved regardless of the architecture or intermediate components. Similarly, any two components that are thus associated can also be considered “operably connected” or “operably coupled” with each other in such a way that the desired functionality can be achieved, and any two components that can be associated in such a way can also be considered “operably coupled” with each other in such a way that the desired functionality can be achieved. Specific examples of components that can be operably coupled may include, but are not limited to, components that can physically interlock and / or interact with each other and / or interact wirelessly and / or interact with each other and / or interact logically and / or interact with each other.

[0212] With respect to the use of plural and / or singular terms herein, those skilled in the art may convert from plural to singular and / or singular to plural as may be appropriate to the context and / or use. A list of various singular / plural forms may be explicitly provided herein for clarity.

[0213] In general, those skilled in the art will understand that terms used in this specification, particularly in the appended claims (e.g., the body of the appended claims), may generally be intended as "non-limiting" terms (e.g., the term "including" should be construed as "including but not limited to", the term "having" should be construed as "having at least", the term "includes" should be construed as "includes but may not be limited to", etc.).

[0214] The figures and the description may illustrate a specific order of method steps, but such order of steps may be different from that described and illustrated, unless otherwise specified above. Two or more steps may be performed in parallel or partially simultaneously, unless otherwise specified above. Such variations may depend, for example, on the selected software and hardware systems and the designer's selections. All such variations may be within the scope of the present disclosure. Similarly, software implementations of the described methods may be accomplished using standard programming techniques with rule-based logic and other logics, and may perform various connection steps, processing steps, comparison steps, and decision steps.

[0215] When a specific number of claim limitations is intended to be introduced, it will be further understood by those skilled in the art that such intention is explicitly recited within the claims and that absent such recitation, no such intention can exist. For example, for purposes of illustration, the appended claims below may contain the use of introductory phrases "at least one" and "one or more" for introducing claim limitations. However, the use of such phrases should not be construed to limit any particular claim containing such introduced claim limitations to an invention containing only one such limitation when the same claim also contains an indefinite article such as "one or more" or "at least one" and "a" or "an" (e.g., "a" and / or "an" should typically be construed to mean "at least one" or "one or more"), and the same applies to the use of definite articles used to introduce claim limitations. In addition, even when a specific number of claim limitations is intended to be introduced and can be explicitly recited, those skilled in the art will recognize that such recitation should typically be construed to mean at least the recited number (e.g., a literal recitation of "two limitations" without other modifying phrases should typically mean at least two limitations or two or more limitations).

[0216] Furthermore, in those cases where a notation similar to "at least one of A, B, and C, etc." may be used, such a structure may generally be intended in a sense that a person skilled in the art would understand the notation (for example, "a system having at least one of A, B, and C" would, but not limited to, include systems having "only A," "only B," "only C," "both A and B," "both A and C," "both B and C," and / or "both A, B, and C," etc.). In those cases where a notation similar to "at least one of A, B, or C, etc." may be used, such a structure may generally be intended in a sense that a person skilled in the art would understand the notation (for example, "a system having at least one of A, B, or C" would, but not limited to, include systems having "only A," "only B," "only C," "both A and B," "both A and C," "both B and C," and / or "both A, B, and C," etc.). It will be further understood by those skilled in the art that virtually any disjunctive word and / or phrase presenting two or more alternative terms should be understood to assume the possibility of including one of the terms, either of the terms, or both of the terms, whether or not they are present in the description, claims, or drawings. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B".

[0217] Furthermore, unless otherwise noted, the use of words such as "approximate," "about," "around," and "substantially" implies a + or - of 10 percent.

[0218] The foregoing description of the illustrative implementation is presented for illustrative and explanatory purposes. It is not intended to be comprehensive or restrictive to the precise forms disclosed, and modifications and variations may be conceivable in light of the foregoing teachings or obtained from the practice of the disclosed implementations. The scope of the invention may be defined by the claims appended herein and their equivalents.

Claims

1. A wireless communication method, wherein the wireless communication method is A wireless communication device receives a first message from a wireless communication node that includes a MAC control CE (MAC CE) to indicate the configuration of one or more transmission configuration indicator (TCI) states, wherein the MAC CE includes a first field indicating the identification of a serving cell associated with a first control resource set pool indicator (CORESET pool ID) to which the MAC CE applies, and a second field having an index indicating a single non-serving cell information unit, wherein some of the one or more TCI states that are active can be associated with the non-serving cell information unit together with the second CORESET pool ID. The wireless communication device determines the activation status of each of the one or more TCI states relating to downlink communication, including at least one of physical downlink shared channel (PDSCH) reception or physical downlink control channel (PDCCH) reception, according to the MAC CE and the single non-serving cell information unit. A wireless communication method comprising, wherein the presence of the single non-serving cell information unit is comprised of the transmission of a radio resource control (RRC) signal in a second message received by the wireless communication device.

2. The wireless communication method according to claim 1, wherein the single non-serving cell information unit can be associated with a cell composed of physical cell indicators (PCIs) different from those of a serving cell.

3. The wireless communication method according to claim 1, wherein the single non-serving cell information unit may be specific to the synchronization signal block (SSB) of the RRC information element (IE).

4. The wireless communication method according to claim 1, wherein the index is an addition to the PCI of a serving cell and further indicates the PCI associated with the single non-serving cell information unit.

5. The wireless communication method according to claim 1, wherein the second field may be present in the MAC CE when the single non-serving cell information unit may be composed of the index, and the second field may be specific to the configured index in the single non-serving cell information unit.

6. The wireless communication method according to claim 3, wherein the number of activated TCI states associated with the single non-serving cell information unit corresponds to additional PCIs and depends on the user equipment (UE) capabilities of the wireless communication device.

7. A wireless communication method, wherein the wireless communication method is A wireless communication node transmits a first message to a wireless communication device, which includes a MAC control CE (MAC CE) to indicate the configuration of one or more transmission configuration indicator (TCI) states, wherein the MAC CE includes a first field indicating the identification of a serving cell associated with a first control resource set pool indicator (CORESET pool ID) to which the MAC CE applies, and a second field having an index indicating a single non-serving cell information unit, wherein a portion of one or more activated TCI states can be associated with the non-serving cell information unit together with the second CORESET pool ID, and the wireless communication device receives a second message which includes radio resource control (RRC) signal transmission constituting the single non-serving cell information unit. The wireless communication node transmits downlink communication to the wireless communication device, which includes at least one of receiving a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH). Includes, A wireless communication method in which the MAC CE and the single non-serving cell information unit can be used by the wireless communication device to determine the activation status of each of one or more TCI states relating to the downlink communication.

8. A wireless communication device comprising at least one processor, wherein the at least one processor is Receiving a first message from a wireless communication node via a receiver, which includes a MAC control CE (MAC CE) to indicate the configuration of one or more transmission configuration indicator (TCI) states, wherein the MAC CE includes a first field indicating the identification of a serving cell associated with a first control resource set pool indicator (CORESET pool ID) to which the MAC CE applies, and a second field having an index indicating a single non-serving cell information unit, wherein some of the one or more activated TCI states can be associated with the non-serving cell information unit together with the second CORESET pool ID, The receiver receives a second message, which includes the transmission of a radio resource control (RRC) signal constituting the presence of the single non-serving cell information unit. Determine the activation status of each of one or more TCI states relating to downlink communication, including at least one of physical downlink shared channel (PDSCH) reception or physical downlink control channel (PDCCH) reception, according to the MAC CE and the single non-serving cell information unit. A wireless communication device configured to perform the following actions.

9. A wireless communication node comprising at least one processor, wherein the at least one processor is Transmitting a first message to a wireless communication device via a transmitter, which includes a MAC control CE (MAC CE) to indicate the configuration of one or more transmission configuration indicator (TCI) states, wherein the MAC CE includes a first field indicating the identification of a serving cell associated with a first control resource set pool indicator (CORESET pool ID) to which the MAC CE applies, and a second field having an index indicating a single non-serving cell information unit, wherein some of the one or more activated TCI states can be associated with the non-serving cell information unit together with the second CORESET pool ID, and the wireless communication device receives a second message which includes radio resource control (RRC) signal transmission constituting the presence of the single non-serving cell information unit. Transmitting downlink communication to the wireless communication device via the aforementioned transmitter, which includes at least one of receiving a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH). It is configured to do the following: The MAC CE and the single non-serving cell information unit can be used by the wireless communication device to determine the activation status of each of one or more TCI states relating to the downlink communication, in a wireless communication node.

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