Methods and apparatus for adapting channel parameter tracking in 5G NR systems

Abstract

A method performed by a wireless device or user equipment (UE) includes: receiving configuration and / or indication of Channel State Information Reference Signal (CSI-RS) or Tracking Reference Signal (TRS) resources from a network node; the method further includes receiving configuration and / or indication and / or scheduling of transmissions to a downlink (DL) channel or reference signal (RS), wherein the source reference signal (RS) for a quasi-co-location (QCL) assumption for the transmission of the DL channel or RS is the CSI-RS or TRS resource; or configuration and / or indication and / or scheduling of transmissions to an uplink (UL) channel or RS, wherein the reference for calculating or estimating path loss to calculate uplink (UL) transmit (Tx) power is the CSI-RS or TRS resource. The method further includes receiving one or more Transmission Configuration Indication States (TCI states) or QCL assumptions for updating the CSI-RS or TRS resources, or physical layer (PHY) signaling or media access control (MAC) signaling or higher-layer signaling that causes such updates. The method further includes applying the updated TCI state or QCL assumption to the CSI-RS or TRS resource or to resources in a CSI-RS or TRS resource set. The method also includes applying at least one of the determined or acquired values ​​after applying the TCI state or QCL assumption to the CSI-RS or TRS resource.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication, and more specifically to a method and apparatus for dynamically switching a reference signal used for tracking in the downlink of a radio communication network and adapting the tracking process to various parameters measured or calculated from the reference signal. Background Technology

[0002] The Radio Access Technology (RAT) in fifth-generation (5G) mobile communication systems, also known as 5G New Radio (NR), offers higher performance and flexibility compared to previous generations of mobile communication systems. 5G mobile communication is driven by the need to provide ubiquitous connectivity for various applications, such as diverse vehicular communications, remote control with feedback, video downloads, and data applications for Internet of Things (IoT) devices and Machine-Type Communication (MTC) devices. 5G wireless technology brings several key benefits, such as faster speeds, lower latency, and enhanced connectivity. The 3rd Generation Partnership Project (3GPP) has developed a complete system specification for the 5G network architecture, which includes at least the Radio Access Network (RAN), Core Transport Network (CN), and service capabilities.

[0003] Figure 1 A simplified schematic diagram of an example wireless communication network 100 is shown, which includes a core network (CN) 110 and a radio access network (RAN) 120. The RAN 120 is shown as comprising multiple network nodes or radio base stations, referred to as gNBs in 5G. Three radio base stations, gNB1, gNB2, and gNB3, are shown. Each gNB serves an area referred to as a coverage area or cell. Figure 1 Three cells, 121, 122, and 123, are shown, each served by its own gNB, gNB1, gNB2, and gNB3. It should be noted that network 100 can include any number of cells and gNBs. A wireless base station or network node serves the users within the cell. In 4G or LTE, the wireless base station is called an eNB; in 3G or UMTS, it is called an eNodeB; and in other wireless access technologies, it is called a BS. The user or user equipment (UE) can be a wireless or mobile terminal device, or a fixed communication device. A mobile terminal device or UE can be an IoT device, an MTC device, etc. IoT devices can include wireless sensors, software, actuators, and computer equipment. They can be embedded in various devices such as mobile devices, motor vehicles, industrial equipment, environmental sensors, medical devices, and aircraft, and rely on network connectivity to enable these devices to collect and exchange data through existing network infrastructure.

[0004] See you again Figure 1Each cell is shown as including UEs and IoT devices. gNB1 in cell 121 serves UE121A, UE2 121B, and IoT device 121C. Similarly, gNB2 in cell 122 serves UE1 122A, UE4 122B, and IoT device 122C, while gNB3 in cell 123 serves UE5 123A, UE6 123B, and IoT device 123C. Network 100 can include any number of UEs and IoT devices, or any other type of device. These devices communicate with the serving gNBs in the uplink, while the gNBs communicate with these devices in the downlink. Each base station gNB1 through gNB3 can connect to the core network (CN) 110, for example, via an S1 interface, via each backhaul link 111, 121D, 122D, 123D, which... Figure 1 The core network 110 is schematically shown in the diagram by arrows pointing towards the "core". The core network 110 can connect to one or more external networks, such as the Internet. These gNBs can connect to each other via the S1, X2, or XN interfaces in 5G, through links 121E, 122E, and 123E, which are shown in the diagram by arrows pointing towards the gNBs.

[0005] For data transmission, physical resource grids can be used. A physical resource grid can include a collection of resource elements (REs) mapped to various physical channels and physical signals. For example, physical channels can include physical downlink, uplink, and / or sidelink (SL) shared channels (PDSCH, PUSCH, PSSCH) for carrying user-specific data, the data of which is also referred to as downlink, uplink, or sidelink payload data; physical broadcast channels (PBCH) for carrying, for example, Master Information Blocks (MIBs) and System Information Blocks (SIBs); and physical downlink, uplink, and / or sidelink control channels (PDCCH, PUCCH, PSCCH) for carrying, for example, downlink control information (DCI), uplink control information (UCI), or sidelink control information (SCI). For uplink, physical channels can also include physical random access channels (PRACH, also known as RACH), used by the UE to access the network after synchronization and acquisition of the MIB and SIB. Physical signals can include reference signals (RS), synchronization signals (SS), etc. Resource grids can include frames or radio frames, which have a fixed duration in the time domain, such as 10 milliseconds, and a specified bandwidth in the frequency domain. Radio frames can contain a number of subframes of a predetermined length, such as two subframes of 1 millisecond each. Each subframe can contain one or more time slots, each time slot consisting of a number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, the specific number depending on the Cyclic Prefix (CP) length. In 5G, each time slot consists of 14 or 12 OFDM symbols, based on the regular CP and extended CP, respectively. Frames can also consist of fewer OFDM symbols, for example, when using a shortened Transmission Time Interval (TTI) or a micro-slot / non-slotted frame structure containing only a small number of OFDM symbols. 5G NR supports slot aggregation, so data transmission can be scheduled to span one or more time slots. The time slot format indicator is used to inform the UE whether the OFDM symbols are downlink symbols, uplink symbols, or flexible / special symbols.

[0006] Wireless communication network systems can be any single-carrier or multi-carrier system employing frequency division multiplexing, such as orthogonal frequency division multiplexing (OFDM) systems, orthogonal frequency division multiple access (OFDMA) systems, or other signal systems based on discrete Fourier transform (DFT) with or without CP, such as discrete Fourier transform extended orthogonal frequency division multiplexing (DFT-s-OFDM). Other waveforms can also be used, such as non-orthogonal waveforms used for multiple access, such as filter bank multicarrier (FBMC), generalized frequency division multiplexing (GFDM), or universal filtered multicarrier (UFMC). The operation of wireless communication systems can be based on, for example, the Enhanced Long Term Evolution (LTE-Advanced Pro) standard, 5G or New Radio (NR) standards, or other standards employing any of the aforementioned waveforms.

[0007] Figure 1 The wireless communication network system shown can be a heterogeneous network containing two overlapping networks; a macro cell network, where each macro cell has a macro base station, similar to gNB1 to gNB3 base stations; and a small cell base station network ( Figure 1 (Not shown in the image), such as femtocells or picocells. In addition to the wireless networks mentioned above, there are also non-terrestrial wireless communication networks, including spaceborne transceivers, such as satellites, and / or airborne transceivers, such as unmanned aerial vehicle (UAV) systems. Non-terrestrial wireless communication networks or systems can employ methods similar to those described in [see also...]. Figure 1 The described ground systems operate in a similar manner, for example, based on LTE-AdvancedPro, 5G, or NR standards.

[0008] In such Figure 1 The schematically illustrated wireless communication network system can utilize multi-antenna techniques, such as those based on LTE, NR, or any other communication system, to improve user data rates, link reliability, cell coverage, and network capacity. To support multi-stream or multi-layer transmission, linear precoding is employed at the physical layer of the communication system. Linear precoding is implemented through a precoding matrix that maps the data layer to antenna ports. Precoding can be viewed as a generalized form of beamforming, a technique that spatially guides or focuses data transmission toward a target receiver. Channel state information (CSI) is used to determine the precoding matrix at the gNB used to map data to transmit antenna ports.

[0009] In wireless communication network systems as described above, such as LTE or New Radio (5G), various physical channels are defined for communicating payload data or control information. Furthermore, various reference signals are designed for purposes such as link adaptation and management, demodulation, frame synchronization, cell search, and phase tracking. A gNodeB (or gNB or base station) transmits data to one or more users in the downlink. User equipment (UE) or mobile devices transmit data to one or more base stations in the uplink. In the sidelink, two or more user equipments can participate in communication. Payload data is transmitted via the Physical Downlink Shared Channel (PDSCH) in the downlink (DL) of the wireless network, via the Physical Uplink Shared Channel (PUSCH) in the uplink (UL), and via the Physical Sidelink Shared Channel (PSSCH) in the sidelink (SL). Control information is typically transmitted via the Physical Downlink Controllable Channel (PDCCH) in the downlink (DL) of a wireless network, via the Physical Uplink Control Channel (PUCCH) in the uplink (UL), and via the Physical Sidelink Control Channel (PSCCH) in the sidelink (SL). The Physical Broadcast Channel (PBCH) and synchronization signal (SS) are transmitted together in the downlink as SS / PBCH blocks to assist cell search and downlink synchronization. The Physical Sidelink Broadcast Channel (PSBCH) in the sidelink is similar in structure and function to the PBCH. The Physical Random Access Channel (PRACH) in the uplink, characterized by a PRACH preamble, is used for uplink synchronization. PDSCH, PDCCH, PBCH, PUSCH, PDCCH, PSSCH, PSCCH, and PSBCH all provide demodulation reference signals (DMRS) for coherent channel demodulation. The number of DMRS antenna ports in a given transmission is equal to the number of layers transmitted. A particular layer transmitted by the channel can be identified by its associated DMRS port.

[0010] In downlink (DL) communication, the transmission of Channel State Information Reference Signal (CSI-RS), performed by the network, plays a crucial role in the establishment, maintenance, adaptation, and recovery of communication links. The following tasks represent only some of its applications in wireless networks: DL channel estimation to adapt link parameters such as spatial precoders, modulation orders, and coding schemes; measuring and reporting suitable spatial beams for communication; tracking various parameters required for communication, such as average delay, delay spread, Doppler shift / spread, and DL path loss; and achieving link recovery after link failure. This invention addresses the issues related to channel parameter tracking based on downlink reference signals (DL RS). This invention discloses various schemes for dynamically switching DL tracking reference signals, and corresponding processing strategies for the tracking process that adapt to the tracked parameters.

[0011] In the millimeter-wave (mmWave) band (Frequency Range 2 (FR2)), i.e., above 6 GHz, wireless communication between communication devices typically employs beamforming for spatially selective / directional transmission and reception. The term "beam" as used below refers to the spatially selective / directional transmission of an output signal or the spatially selective / directional reception of an input signal achieved by precoding / filtering a signal at the antenna port of a device using a set of coefficients. The terms "precoding" or "filtering" refer to signal processing in the analog or digital domain. The set of coefficients used to orient the transmitted / received signal in space can vary depending on the direction. The term "transmit (Tx) beam" refers to spatially selective / directional transmission, and the term "receive (Rx) beam" refers to spatially selective / directional reception. The set of coefficients used to precode / filter the transmitted or received signal is referred to as a "spatial filter." The term "spatial filter" is used interchangeably with the term "beam direction" in this document because the coefficients of the spatial filter determine the spatial orientation of the transmitted / received signal.

[0012] In the following text, the term "higher layer" when used alone refers to any communication layer in the protocol stack that is higher than the physical layer.

[0013] The terms "serving cell" and "carrier component (CC)" are used interchangeably in this disclosure because a serving cell configured for a UE is typically an independent physical carrier with a specific carrier frequency. The cell size and beamforming reference signal may differ depending on the frequency of the carrier component / serving cell. Each serving cell or carrier component contains... A bandwidth portion (BWP) is a set of frequency domain resources. At any given time within the serving cell, the UE can receive physical layer transmission signals from a transmit-receive point (TRP) or any other network element on a BWP configured in the cell's DL, and can also transmit signals on a BWP configured in the cell's UL.

[0014] It should be noted that any operation mentioned as being performed by a network node such as gNodeB (or gNB) can also be performed by any other network element in the network, and therefore all related statements should be understood in this way. Summary of the Invention

[0015] The purpose of these embodiments is to provide a method and apparatus for enhancing reference signals for channel parameter tracking in wireless communication networks such as advanced 5G networks.

[0016] According to one aspect of some embodiments herein, a method performed by a wireless device or a UE is provided, the method comprising: Received from network node: Configuration and / or indication of Channel State Information Reference Signal (CSI-RS) or Tracking Reference Signal (TRS) resources; Configuration and / or indication and / or scheduling of transmissions for a downlink (DL) channel or reference signal (RS), wherein the source reference signal (RS) for the quasi-co-location (QCL) assumption of the transmission of the DL channel or RS is the CSI-RS or TRS resource; or configuration and / or indication and / or scheduling of transmissions for an uplink (UL) channel or RS, wherein the reference used to calculate or estimate path loss to calculate uplink (UL) transmit (Tx) power is the CSI-RS or TRS resource; and One or more Transport Configuration Indicator (TCI) states or QCL assumptions used to update the CSI-RS or TRS resources, or physical layer (PHY) signaling or media access control (MAC) signaling or higher layer signaling that causes them to be updated. The method further includes: At a predetermined or specified time after receiving the signaling, the updated TCI-State or QCL assumptions will be applied to the CSI-RS or TRS resources; At or before the application of the TCI state or QCL assumption, determine or obtain a value for at least one of the following from the CSI-RS or TRS resources: Channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; One or more path loss estimates; A specified or predetermined period after the TCI status or QCL assumption is applied to the CSI-RS or TRS resource. Use or apply at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0017] According to another aspect of some embodiments herein, a method performed by a wireless device or a UE is provided, the method comprising: Received from network node: Configuration and / or indication of CSI-RS or TRS resources; Configuration and / or indication and / or scheduling of transmissions to DL channels or RS, wherein the source reference signal RS for the QCL assumption of the transmission of the DL channel or RS is the CSI-RS or TRS resource, or configuration and / or indication and / or scheduling of transmissions to UL channels or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource; The first PHY signaling, first MAC signaling, or first higher-layer signaling used to deactivate the CSI-RS or TRS resources; and An instruction for activating or reactivating the CSI-RS or TRS resource, received together with the first signaling or via another different signaling; At or before the CSI-RS or TRS resource is deactivated, determine or obtain at least one of the following values ​​from the CSI-RS or TRS resource: At least one or more channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use or apply at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0018] According to another aspect of some embodiments herein, a method performed by a wireless device or a UE is provided, the method comprising: Received from network node: The configuration and / or indication of a first CSI-RS or TRS resource and a second CSI-RS or TRS resource, wherein the first and second CSI-RS or TRS resources are configured for tracking and have periodic or semi-persistent time-domain characteristics. The configuration, indication, and / or scheduling of transmissions for the DL channel or RS, wherein the source reference signal RS for the quasi-co-located QCL assumption of the transmission of the DL channel or RS is the first CSI-RS or TRS resource, or the configuration, indication, and / or scheduling of transmissions for the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the first CSI-RS or TRS resource. The first PHY, MAC, or higher-layer signaling used to deactivate the first CSI-RS or TRS resource, and An indication for activating the second CSI-RS or TRS resource, received together with the first signaling or via another different signaling; renew: At least one QCL assumption for receiving the DL channel or RS; or The path loss reference for the UL channel or RS. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource.

[0019] According to another aspect of some embodiments herein, a method is provided performed by a network node, the method comprising: Send to the wireless device or user equipment (UE): Configuration and / or indication of CSI-RS or TRS resources, Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the source reference signal RS assumed for the quasi-co-location QCL of the transmissions on the DL channels or RSs is the CSI-RS or TRS resource; or configuration, indication, and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference used to calculate or estimate path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource. The TCI status or QCL assumption used to update the CSI-RS or TRS resource, or the PHY, MAC, or higher-layer signaling that causes the update. So that the UE can: At a predetermined or specified time after receiving the signaling, the updated TCI-State or QCL assumptions will be applied to the CSI-RS or TRS resources; At the time or prior to the application of the QCL assumption or TCI state, determine or obtain a value for at least one of the following from the CSI-RS or TRS resources: At least the channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS, Path loss estimate; A specified or predetermined period after the QCL assumption or TCI status is applied to the CSI-RS or TRS resource. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0020] According to another aspect of some embodiments herein, a method is provided performed by a network node, the method comprising: Send to User Equipment (UE): Configuration and / or indication of CSI-RS or TRS resources, Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the source reference signal RS assumed for the quasi-co-location QCL of the transmissions on the DL channels or RSs is the CSI-RS or TRS resource; or configuration, indication, and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference used to calculate or estimate path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource. The first PHY layer, MAC layer, or higher layer signaling used to deactivate the CSI-RS or TRS resources, and An instruction for activating or reactivating the CSI-RS or TRS resource, received together with the first signaling or via another different signaling; So that the UE can: Determine or obtain at least one of the following values ​​from the CSI-RS or TRS resource when or before the CSI-RS or TRS resource is deactivated: At least the channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS, Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0021] According to another aspect of some embodiments herein, a method is provided performed by a network node, the method comprising: Send to User Equipment (UE) or Radio Equipment: The configuration and / or indication of a first CSI-RS or TRS resource and a second CSI-RS or TRS resource, wherein the first and second CSI-RS or TRS resources are configured for tracking and have periodic or semi-persistent time-domain characteristics. The configuration, indication, and / or scheduling of transmissions for the DL channel or RS, wherein the source reference signal RS for the quasi-co-located QCL assumption of the transmission of the DL channel or RS is the first CSI-RS or TRS resource, or the configuration, indication, and / or scheduling of transmissions for the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the first CSI-RS or TRS resource. The first PHY layer, MAC layer, or higher layer signaling used to deactivate the first CSI-RS or TRS resource, and An indication for activating the second CSI-RS or TRS resource, either together with the first signaling or indicated by another different signaling; So that the UE can update: At least one QCL assumption for receiving the DL channel or RS; or The path loss reference for the UL channel or RS. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource.

[0022] A wireless device or UE is also provided, which is configured to perform methods according to some embodiments.

[0023] Network nodes are also provided, which are configured to perform methods according to some embodiments.

[0024] A computer program is also provided, including instructions that, when executed on at least one processor of the UE, cause the at least one processor to perform the actions of the steps described herein.

[0025] A computer program is also provided, including instructions that, when executed on at least one processor of a network node, cause the at least one processor to perform the actions of the steps described herein.

[0026] It also provides a carrier containing a computer program, said carrier being one of a computer-readable storage medium, an electronic signal, an optical signal, or a radio signal.

[0027] The advantage of the embodiments described in this paper is that it reduces the latency of the reference signals and corresponding parameter tracking used by the UE, thus adapting to the current mobility of the UE. Understanding the transmission of the reference signals used for tracking between the network and the UE and the adaptation mechanism of the tracking process is crucial for achieving accurate channel parameter tracking and reliable uplink and downlink transmission.

[0028] Other advantages of the embodiments described herein are set forth in the detailed description of this disclosure. Attached Figure Description

[0029] Embodiments of the present invention will be further described in detail with reference to the accompanying drawings, in which: Figure 1 A schematic diagram of a wireless communication system is shown; Figure 2 Examples of possible QCL types indicated / assumed for RS used for tracking are shown in some embodiments of this paper; Figure 3 An exemplary timeline and corresponding UE behavior are shown for adapting the QCL assumptions for tracking reference signals according to some embodiments of this document; Figure 4 A flowchart illustrating a method performed by a wireless device (or UE) according to some embodiments herein; Figure 5 A flowchart illustrating a method performed by a wireless device (or UE) according to some embodiments herein; Figure 6 A flowchart illustrating a method performed by a wireless device (or UE) according to some embodiments herein; Figure 7 A flowchart illustrating a method performed by a network node according to some embodiments herein is shown; Figure 8 A flowchart illustrating a method performed by a network node according to some embodiments herein is shown; Figure 9 A flowchart illustrating a method performed by a network node according to some embodiments herein is shown; Figure 10 A schematic diagram of a wireless device (such as a user equipment) is shown; Figure 11 A schematic diagram of network nodes is shown. Detailed Implementation

[0030] The following detailed description of exemplary embodiments in various scenarios, taken in conjunction with the accompanying drawings, will make the solutions described herein easier to understand.

[0031] In some embodiments, the wireless device or user equipment (UE) is configured to receive one or more Transport Configuration Indication States (TCI states) from a network node. In another embodiment, the UE is configured to have one or more TCI states according to known rules, for example, rules described in the NR standard. The TCI state configuration includes at least one of the following: 1. One or more reference signals, each reference signal having one or more quasi-common address (QCL) assumptions or setup types; 2. One or more reference signals (RS) are used as a path loss reference (the path loss estimate calculated from said RS is used to calculate the transmit (Tx) power of the UL channel or RS); 3. One or more transmission power settings.

[0032] Depending on the indicated settings, the TCI state is a DL TCI state, a UL TCI state, or a combined TCI state. If the configuration includes receive settings, i.e., one or more reference signals, each with one or more QCL assumptions or setting types, then the TCI state is a DL TCI state. The DL TCI state does not include the second and third settings described above. The settings in the DL TCI state are applied by the UE to the DL channel or RS (the settings in the DL TCI state are applied to receive the DL channel or RS). If the configuration includes transmit settings, i.e., the second and / or third settings described above, then the TCI state is a UL TCI state. The UL TCI state does not include the first setting described above. The settings in the UL TCI state are applied by the UE to the UL channel or RS (the settings in the UL TCI state are applied to transmit the UL channel or RS). If the configuration includes the first setting as well as the second and / or third settings described above, then the TCI state is a combined TCI state. The settings in the combined TCI state can be applied by the UE to both the UL and DL channels / RS.

[0033] In some embodiments, the UE is configured to apply the reception settings provided in one or more DL TCI states, i.e., one or more TCI states, to receive DL reference signals or DL ​​channels (e.g., Physical Downlink Shared Channel (PDSCH) or Physical Downlink Control Channel (PDCCH)).

[0034] The phrase “apply TCI state to DL reference signal or channel” in the UE has the same meaning as “apply QCL assumptions or settings provided in TCI state to receive said DL reference signal or channel”.

[0035] If the large-scale characteristics of the channel transmitting symbols on one antenna port can be derived from the channel of the channel transmitting symbols on another antenna port, then the two antenna ports are called quasi-co-located (QCL-ed). The large-scale characteristics include one or more of the following: delay spread, Doppler spread, Doppler frequency shift, average gain, average delay, and spatial reception (Rx) parameters.

[0036] The QCL assumption is performed / applied between ports of two different reference signals, or between a port of a reference signal and a port of a physical channel (demodulation reference signal DMRS), such as a physical downlink control channel or a physical downlink shared channel. The UE can derive one or more large-scale channel characteristics of the channel or reference signal from the reference signal providing the QCL, i.e., the source reference signal used for the QCL.

[0037] The phrase "the DL / SL channel or RS'A' (or its ports) and RS'b' (or its ports) are quasi-co-located with respect to 'Doppler shift' and 'delay spread', or are assumed to be quasi-co-located" means that the parameters (or channel parameters) used for receiving, demodulating, decoding, or processing the DL / SL channel or RS'A' (or its ports) can be determined, derived, or inferred from RS'b (the channel corresponding to RS'b, or the channel corresponding to RS'b's ports). Here, RS'b (its ports) is referred to as the QCL source, or source RS, which provides a reference for measuring the channel parameters (or simply parameters). The DL / SL channel or RS'A' (its ports) is the target.

[0038] The current NR standard defines four different QCL types to indicate which parameters the QCL assumptions are performed / applied for: Type A: {Doppler frequency shift, Doppler spread, average time delay, time delay spread} Type B: {Doppler frequency shift, Doppler spread} Type C: {Doppler frequency shift, average time delay} Type D: {Space Reception (Rx) Parameters} The channel or RS'X' is quasi-co-located with DL RS resource'b in QCL type A, or is assumed to be quasi-co-located, meaning that the Doppler frequency shift, Doppler spread, average delay, and delay spread of the channel (or the DMRS port of the channel) or RS'X' can be obtained or derived from DL RS resource'b (the corresponding channel).

[0039] The channel or RS'X' and DL RS resource'b are quasi-co-located in QCL type D, or are assumed to be quasi-co-located, meaning that the channel (or the DMRS port of the channel) or RS'X' and DL RS resource'b can be received by the UE using the same spatial reception filter. QCL type D is typically applied to UEs capable of receiving (Rx) beamforming (e.g., UEs implementing hybrid or analog beamforming networks).

[0040] The TCI state includes one or more CSI-RS or SSB resources as source RSs, and also includes QCL assumptions for each source RS. The RSs in the TCI state are typically RSs that the UE has previously measured, and therefore can be used as a reference for receiving the target signal or target channel (port). RSs provided in the TCI state along with the QCL assumption type can be referred to as source RSs for QCL.

[0041] TCI status includes at least one of the following: RS'r1' with QCL type 'X1', and / or RS'r2' with QCL type 'X2' Where 'X1' and 'X2' can be any of types A, B, C, or D. Applying the TCI state to the DL channel or RS means that the UE executes the QCL assumption provided in the TCI state, that is, the UE assumes that the DL channel or RS is: With respect to QCL type 'X1', it is quasi-co-addressable with RS'r1' if RS'r1 with QCL type 'X1' is provided in TCI-State; With respect to QCL type 'X2', it is quasi-co-addressable with RS 'r2' if RS 'r2' with QCL type 'X2' is provided in TCI-State.

[0042] In some embodiments, RS'r1' and 'r2' can be CSI-RS (e.g., NZP CSI-RS resource) or SSB.

[0043] Similarly, the QCL assumption applied to / enforced on a DL channel or RS is that the DL channel or RS is quasi-co-located with respect to the indicated / specified / predetermined QCL type 'X' ('X' can be any of type A, B, C or D).

[0044] This can also be referred to as performing QCL association. In the example above, RS'r' can be a CSI-RS (e.g., an NZP CSI-RS resource) or an SSB.

[0045] In some examples, the TCI state (joint or UL TCI state) may include RS and / or power control settings or variables used by the UE to calculate, estimate, or compute path loss estimates. Applying the TCI state to the UL channel or RS means: The UE uses the RS provided in the TCI state as a reference for determining the path loss estimate, which is used to calculate the UL transmit (Tx) power of the UL channel or RS; and / or The UE uses the power control settings provided in the TCI state to calculate the UL transmit (Tx) power of the UL channel or RS transmission.

[0046] In some embodiments, the RS indicated as a reference for calculating path loss estimates may be a CSI-RS (e.g., a CSI-RS resource or an NZP CSI-RS resource) or an SSB.

[0047] In some embodiments, the UE is configured to receive configuration for one or more DL RS resources for tracking, wherein the one or more DL RS resources are provided in one or more resource sets. In some examples, the network instructs the UE to use the resources for tracking. In some examples, the resource configuration includes the parameter 'trs-Info', which indicates that the associated resource is used for tracking.

[0048] In some cases, "tracking" refers to the UE using RS resources to determine, measure, or estimate channel-related time / frequency parameters. This can refer to determining, measuring, or estimating one or more large-scale channel characteristics or parameters (also referred to as "channel parameters" in some instances of this disclosure). Such determination, measurement, or estimation can be performed at one or more transmission times of the RS resources.

[0049] In some cases, the resource configured for tracking is a non-zero power (NZP) CSI-RS resource.

[0050] In some embodiments, the UE is configured to receive configurations of resources for tracking from one or more resource sets. The resource set may be provided by a higher-level parameter 'NZP-CSI-RS-ResourceSet' configured with parameter 'trs-Info', or by a higher-level parameter 'trs-ResourceSetConfig'. Resources provided in the NZP CSI-RS resource set configured with parameter 'trs-Info' are hereinafter referred to as CSI-RS for tracking, while resources provided in 'trs-ResourceSetConfig' are hereinafter referred to as TRS.

[0051] In some embodiments, when the RRC is in 'connected' mode, the CSI-RS for tracking is configured to the UE and transmitted, while when the RRC is in 'idle' or 'inactive' mode, the TRS is configured and transmitted.

[0052] In some embodiments, two or four resources in the resource set used for tracking are allocated to the UE.

[0053] In some embodiments, the CSI-RS or TRS resources or sets of resources used for tracking are configured to have periodic time-domain characteristics. This allows the UE to continuously and uninterruptedly track parameters such as Doppler shift / spread, delay parameters, path loss, etc. Interruptions occur only when an RRC reconfiguration occurs, which causes the CSI-RS or TRS to change to different beam and QCL parameters.

[0054] In some embodiments, the CSI-RS or TRS resources or sets of resources used for tracking are configured to have aperiodic time-domain characteristics. Aperiodic tracking RSs typically have periodic tracking RSs as their QCL sources. This is commonly used to reactivate transmissions in discontinuous reception (DRX) scenarios.

[0055] In some embodiments, the UE is configured to receive configurations for at least one set of CSI-RS resources with its 'repetition' parameter set to 'on'. All resources configured in this set will then be transmitted by the network node using the same spatial transmission filter.

[0056] The CSI-RS or TRS used for tracking, as the primary RS, provides the QCL assumption for the vast majority of DL channel reception, as well as for the CSI-RS used for CSI acquisition and / or DL ​​transmit (Tx) beam management (CSI-RS without the 'repetition' parameter or with its 'repetition' parameter set to 'off').

[0057] RSs used for channel parameter tracking are typically periodic (non-periodic CSI-RS or TRSs for tracking are quasi-co-located with periodic TRSs) and have 'good' frequency domain density and bandwidth (higher bandwidth than SSBs), making them ideal for estimating Doppler and delay parameters of the channel with high accuracy. Up to four periodic RSs can be configured for tracking and associated resource-wise with up to four SSBs, if applicable, via QCL types C and / or D. In 5G NR parameter configurations, a cell can be configured with up to 64 or 128 SSBs across multiple subcarrier intervals to cover the entire cell area, where an RS for tracking can be understood as tracking channel parameters within a specific subset of the cell coverage area corresponding to the SSB associated with the RS for tracking. SSBs are used for cell identification and synchronization, while RSs for tracking form the next step before data transmission: high-resolution channel parameter tracking of a subset of the beams corresponding to the configured SSBs (i.e., a subset of the cell coverage area where they reside) to ensure reliable DL / UL physical channel transmission. This avoids the UE performing channel parameter tracking on a wide range of SSBs (typically from SSBs with lower received power that point to other areas of the cell), thus reducing UE complexity. However, this can also lead to drawbacks when the UE moves. When the UE moves, the strongest SSB associated with the UE may also change. Consequently, the SSB associated with the RS used for tracking also needs to change to track the 'correct' SSB for tracking and channel reception / transmission. However, since the TCI state or QCL assumption of the RS used for tracking can only be updated via RRC signaling with significant delay, channel parameter tracking may not keep up with changes in highly mobile UEs, especially in cells with a large number of SSBs and strong spatial selectivity. In this case, the limited number of RSs used for tracking and their slow TCI state updates become bottlenecks for accurate large-scale channel parameter tracking, which is crucial for the reliability of downlink channels and uplink transmissions.

[0058] To address the aforementioned issues, this paper proposes several enhancement schemes for semi-persistent or periodic tracking signals with dynamically switchable reception settings. Furthermore, it provides UE operation to accommodate interruptions in the tracking process.

[0059] TCI status signaling based on MAC-CE or PDCCH In some embodiments, the UE is configured to: Receive a PDCCH or Media Access Control Layer Control Unit (MAC-CE) message from a network node indicating one or more TCI states. This message provides reception settings for one or more resources or resource sets of the DL Reference Signal (RS), and / or transmission settings for one or more resources or resource sets of the UL RS, wherein the resources or resource sets of the DL / UL RS are configured to have periodic or semi-persistent time-domain characteristics. The receiving settings are applied to the reception of the resource or resource set of the DL reference signal; and / or The transmission settings are applied to the transmission of the resource or resource set of the UL reference signal.

[0060] In some embodiments, the UE is configured to: Receive PDCCH or Media Access Control Layer Control Unit (MAC-CE) messages from network nodes to indicate one or more TCI states, for application to one or more resources or resource sets of the DL Reference Signal (RS) and / or one or more resources or resource sets of the UL RS, wherein the resources or resource sets of the DL / UL RS are configured to have periodic or semi-persistent time-domain characteristics, and Apply the TCI state to: The resource or resource set of the DL reference signal; and / or The resource or set of resources of the UL reference signal.

[0061] In some embodiments, the resource set of the DL or UL reference signal includes one or more resources of the DL or UL reference signal.

[0062] In some embodiments, the DL reference signal is CSI-RS or TRS.

[0063] In some embodiments, the UL reference signal is a probe reference signal (SRS).

[0064] In some embodiments, the TCI state includes one or more reference signals and one or more quasi-co-address (QCL) assumption / setting types for each reference signal, which refer to reception settings. The QCL assumptions or settings are reception settings provided for one or more resources or sets of resources to receive DL reference signals at the UE.

[0065] In some embodiments, the TCI state includes: One or more reference signals used as a reference for path loss; and / or Power control settings.

[0066] Path loss reference and / or power control settings are transmission settings provided for transmitting one or more resources or resource sets to transmit the UL reference signal. They can be used to calculate the UL transmit (Tx) power of the resource or resource set transmitting the UL reference signal.

[0067] In some embodiments, one or more DL RS resources or resource sets are configured for tracing. In some examples, the DL resource or resource set is a CSI-RS resource or resource set. This may mean that the resource or resource set is configured with the parameter 'trsInfo'. In some other examples, the DL resource or resource set is a TRS resource or resource set configured via the higher-level parameter 'trs-ResourceSetConfig'.

[0068] In some embodiments, the UE is configured via a higher layer (e.g., RRC). One CSI-RS or TRS resource.

[0069] In some embodiments, it is configured to receive at least including The PDCCH or MAC-CE message with the ID of the TCI state. Upon receiving the PDCCH or MAC-CE message, the UE will send the first TCI state ID indicated in the PDCCH or MAC-CE message. The TCI state is applied to the first A CSI-RS resource or TRS resource (e.g., in ascending order of resource ID, or in order of...). (The index numbers of the resources are in ascending order). In some examples, the CSI-RS or TRS resources are periodic or semi-persistent.

[0070] In some embodiments, the UE is configured to be in a cell One CSI-RS resource or TRS resource.

[0071] In some embodiments, the UE is configured with a CSI-RS or TRS resource set. One CSI-RS resource or TRS resource, that is, the CSI-RS or TRS resource set includes One resource.

[0072] In some options, with The TCI states to be applied to The ID or index number corresponding to each CSI-RS or TRS resource is also provided in the PDCCH or MAC-CE message.

[0073] Updating QCL assumptions without TCI state indication In some embodiments, the UE is configured with One CSI-RS resource or TRS resource, and configured as follows: Receive at least the information used for indication from the network node. The PDCCH or MAC-CE message for the ID of each Synchronization Signal Block (SSB) resource, and exist A configured CSI-RS or TRS resource and Perform QCL assumptions or associations between indicated SSB resources.

[0074] In some embodiments, the UE is configured to: Receive a PDCCH or MAC-CE message from a network node, wherein the PDCCH or MAC-CE message indicates at least: The ID of a Synchronization Signal Block (SSB) resource; and The ID of a CSI-RS or TRS resource; and exist A configured CSI-RS or TRS resource and Perform QCL assumptions or associations between indicated SSB resources.

[0075] In some cases, CSI-RS or TRS resources are configured for tracing. This could mean that the CSI-RS resource or the resource set to which it belongs can be configured with the parameter 'trsInfo', or that the TRS resource or the resource set to which it belongs can be configured via the higher-level parameter 'trs-ResourceSetConfig'.

[0076] In some embodiments, the UE is configured with One CSI-RS resource or TRS resource, and configured as follows: Receive a PDCCH or MAC-CE message from a network node, wherein the PDCCH or MAC-CE message indicates at least: The ID of a Synchronization Signal Block (SSB) resource; and The ID of each CSI-RS resource; and Perform or apply QCL assumptions or associations between the following pairs: A configured CSI-RS or TRS resource and Between the indicated SSB resources; and A configured CSI-RS or TRS resource and Between the indicated CSI-RS resources.

[0077] In some examples, the stated A configured CSI-RS or TRS resource is used for tracing. In some options, the... The indicated CSI-RS resources are not used for tracing. In some other examples, the... One indicated CSI-RS resource and the Each of the configured CSI-RS or TRS resources is different.

[0078] In some embodiments, the UE is configured to: Receive a PDCCH or MAC-CE message from a network node, wherein the PDCCH or MAC-CE message indicates at least: The ID of a Synchronization Signal Block (SSB) resource; The ID of each CSI-RS resource; and The ID of the CSI-RS or TRS resource used for tracking; and Perform or apply QCL assumptions or associations between the following pairs: Indicated in the PDCCH or MAC-CE message The CSI-RS or TRS resources used for tracking are the same as those indicated in the PDCCH or MAC-CE message. Between SSB resources; and Indicated in the PDCCH or MAC-CE message The CSI-RS or TRS resources used for tracking are the same as those indicated in the PDCCH or MAC-CE message. Between CSI-RS resources.

[0079] In some options, the indicated Each CSI-RS resource is not used for tracking and is consistent with the indicated one. The CSI-RS or TRS resources used for tracking are different.

[0080] In some embodiments, the information provided in the PDCCH or MAC-CE message A CSI-RS or TRS resource is from the Indicated in a configured CSI-RS or TRS resource One resource.

[0081] In some cases, CSI-RS or TRS resources that are the application / execution targets of TCI states or QCL assumptions (CSI-RS / TRS resources that are the targets in QCL assumptions) are configured to have periodic or semi-persistent time-domain characteristics.

[0082] In some embodiments, when the resource is active, the UE is configured to receive TCI state or QCL assumptions for updating the CSI-RS / TRS resource, or PHY signaling, MAC signaling, or higher-layer signaling that causes such updates. In this case, the resource (or the resource set to which it belongs) can be configured to have semi-persistent time-domain characteristics.

[0083] Upon receiving the PDCCH or MAC-CE message, the UE assumes that it was indicated by the PDCCH or MAC-CE message, or configured by a higher layer. A CSI-RS or TRS resource / resource set is indicated by the PDCCH or MAC-CE message. An SSB resource is quasi-co-addressable through at least one of four QCL types (types A, B, C, and D). In some cases, the QCL type used in the QCL assumption is QCL type C and, if applicable, QCL type D.

[0084] In some embodiments, the PDCCH or MAC-CE message indicates to the UE that it should perform the QCL type of the QCL assumption between CSI-RS or TRS resources and the indicated SSB resources. In some examples, this indication is in the PDCCH or MAC-CE. A field containing bytes. The value of this field. This field can instruct the UE to assume that the CSI-RS / TRS resources and SSB resources are co-located via QCL type C quasi-co-addressing. This can instruct the UE to assume that CSI-RS / TRS resources and SSB resources are quasi-co-located via QCL type C and, if applicable, QCL type D. In some examples, The size is 1.

[0085] Upon receiving the PDCCH or MAC-CE message, the UE assumes that it was indicated by the PDCCH or MAC-CE message, or configured by a higher layer. The CSI-RS or TRS resource used for tracking is indicated by the PDCCH or MAC-CE message. Each CSI-RS resource is quasi-co-addressable via at least one of the four QCL types (Type A, B, C, and D). In some cases, the QCL type used in the QCL assumption is QCL type D, if applicable. In some situations, the CSI-RS resource used as a QCL source is not used for tracing.

[0086] In some examples, used in One CSI-RS resource used for tracking or TRS resources and The QCL type used to associate between SSB resources is QCL type C, while the type used for associating between SSB resources is QCL type C. One CSI-RS resource used for tracking or TRS resources and The QCL type for making QCL assumptions or associations between CSI-RS resources (in some cases, these resources are not used for tracking) is QCL type D.

[0087] In some cases, CSI-RS resources not used for tracing are configured with the high-level parameter 'repetition'.

[0088] In some embodiments, the UE assumes that the indicated or configured CSI-RS or TRS resource for tracking is quasi-co-located with the indicated SSB resource via QCL type C, while retaining the assumption that the CSI-RS / TRS resource already has any QCL type D. In some examples, such UE behavior is enabled by PDCCH or MAC-CE signaling from the network node.

[0089] In some embodiments, the UE is configured to receive PDCCH or MAC-CE messages from a network node, the PDCCH or MAC-CE messages being used to activate or deactivate transmissions of one or more resources / resource sets configured for tracking TRS or CSI-RS.

[0090] In some embodiments, the UE is configured to receive one or more TCI states of an active DL resource / resource set (e.g., a CSI-RS or TRS for tracking) in a PDCCH or MAC-CE message. In some examples, the RS is configured to have semi-persistent time-domain characteristics.

[0091] Some embodiments in this document provide examples of possible QCL types for RS indication / assumption used in tracking. Figure 2 As shown in the image.

[0092] QCL updated tracking parameter calibration The UE tracks multiple large-scale channel parameters across various DL reference signals. The QCL type associated with the source RS and / or using the source RS as a path loss reference enables the UE to obtain the corresponding channel parameters from the RS and use these parameters for channel estimation, signal or channel demodulation, link adaptation, beam management, synchronization, UL power control, etc. For example, parameters such as Doppler spread, delay spread, and spatial reception (Rx) parameters (if applicable) are required for PxSCH demodulation (QCL type A and, if applicable, type D). To receive CSI-RS resources without 'repetition', spatial reception (Rx) parameters with time-frequency parameter references, if applicable, are required for UE processing (QCL type C and / or type B and, if applicable, type D). Any interruption in the estimation process of parameters tracked from these RSs, such as due to beam switching, terminal mobility, or configuration changes of the RS used for tracking, will affect the reliability of DL channel and RS reception, as well as UL power control. Therefore, when adapting RS transmissions for tracing via any network signaling adapter, the following aspects need to be considered: Interruption of tracking of parameters obtained from the CSI-RS or TRS used for tracking; Interruptions in the reception of the parameters in the signal or channel of the source RS of the QCL using the CSI-RS or TRS for tracking.

[0093] In some embodiments, the UE is configured to determine, estimate, measure, or trace at least one of the following parameters from CSI-RS / TRS resources: Path loss; Average gain; Average latency; Latency spread; Doppler extension; Doppler shift.

[0094] In this disclosure, they are sometimes referred to as 'channel parameters'.

[0095] These parameters can correspond to the channels of ports carrying CSI-RS or TRS resources.

[0096] In some embodiments, the UE is configured to determine, estimate, measure, or track at least one of the following from CSI-RS or TRS resources: One or more channel parameters DL corresponding to the QCL assumption associated with the DL channel or RS; Path loss.

[0097] In some embodiments, the UE is configured to: Receive configuration or indication for indicating DL RS resources / resource sets, and Receive DL channel transmissions or CSI-RS transmissions, wherein the DL channel transmissions or CSI-RS transmissions are quasi-co-located with the DL RS resources or DL ​​RS resources from the DL RS resource set with respect to one or more channel parameters.

[0098] The channel parameters should be at least one of the following: path loss, average gain, average delay, delay spread, Doppler spread, Doppler shift, and spatial reception (Rx) parameters. In some examples, the parameters for which QCL assumptions are provided between the DL channel or CSI-RS and DL RS resources are determined by the QCL type. For example, the QCL type can be type A, B, C, or D.

[0099] The estimation or measurement results of one or more of the above parameters can be used by the UE to demodulate, decode, or receive the DL channel or RS. The parameters used for demodulation, decoding, or reception can be determined based on the QCL type.

[0100] In some embodiments, the UE is configured to: Receive configuration or instructions for DL ​​RS resources / resource sets, and The transmission of the UL channel or RS is performed, and the transmission uses path loss estimates or measurements from the DL RS resources or from the DL RS resource set to determine the transmission (Tx) power of the UL channel or RS.

[0101] In some examples, the DL RS resource / resource set is a CSI-RS or TRS resource / resource set. In some examples, the CSI-RS resource / resource set is used for tracing. This could mean that the CSI-RS resource / resource set is configured with the parameter 'trsInfo', or that the TRS resource / resource set is configured via the higher-level parameter 'trs-ResourceSetConfig'.

[0102] In some examples, the CSI-RS or TRS is configured to have periodic or semi-persistent time-domain characteristics.

[0103] In some embodiments, the UE is configured to perform a reset on operations that determine, estimate, measure, or trace one or more parameters from CSI-RS or TRS resources after receiving PHY, MAC, or higher-layer signaling, which is used for: Perform an update on the TCI status and / or QCL assumptions of the CSI-RS / TRS resources; or Activate or deactivate the transmission of the CSI-RS / TRS resource (or its associated resource set).

[0104] In some embodiments, resetting the operation of estimating, measuring, or tracking parameters from a reference signal (RS) resource includes at least one of the following: The operation of tracking the parameters from the RS resource is performed until a predetermined or specified reset time, after which it restarts. At a predetermined or specified reset time, before, or after, at least one value related to the operation of estimating or measuring the parameter from the RS resource will be set to zero. At a predetermined or specified reset time, before, or after, at least one value related to the operational history of the parameter estimated or measured from the RS resource will be cleared or set to zero.

[0105] In some embodiments, activation signaling for semi-persistent CSI-RS / TRS resources / resource sets can be received when the CSI-RS / TRS resource / resource set is active.

[0106] In some examples, the activation signaling provides one or more TCI states that the UE will apply to the activated resource. Specifically, the signaling can provide for the activation of... One CSI-RS / TRS resource One TCI state. If a CSI-RS or TRS resource set is activated by this signaling, the signaling provides the same number of TCI states as the resources in the CSI-RS / TRS resource set.

[0107] In some embodiments, the UE is configured to simultaneously receive PHY, MAC, or higher-layer signaling for activating at least one semi-persistent CSI-RS / TRS resource or resource set, and signaling or indication for deactivating the same resource or resource set. This signaling type ensures the continuity of parameter estimation for semi-persistent CSI-RS / TRS resources. If there is a discontinuity in the transmission of CSI-RS / TRS resources from which large-scale parameters are obtained, the loss of parameter tracking may prevent decoding of the channel and RS using said resource as the source RS in the QCL. Therefore, deactivating semi-persistent resources simultaneously ensures the continuity of their transmission.

[0108] In some examples, activation and deactivation signaling are obtained via a single MAC-CE message or PDCCH. In other examples, deactivation signaling is obtained in a first MAC-CE message or first PDCCH, while activation signaling is obtained in a second MAC-CE message or second PDCCH. In some options, the first and second MAC-CE messages are received in the same PDSCH.

[0109] In some embodiments, after receiving the signaling, the ship speed of the indicated CSI-RS / TRS resource or resource set is deactivated, then reactivated and the indicated TCI state is applied.

[0110] In some cases, the activated / deactivated CSI-RS / TRS resource or resource set is used for tracing (the CSI-RS / TRS resource or resource set is configured with the parameter 'trsInfo', or configured with the parameter 'trs-ResourceSetConfig').

[0111] In some embodiments, the UE is configured to receive PHY, MAC, or higher-layer signaling indicating at least one of the following: One TCI state, or SSB resources or resources not used for tracking One CSI-RS resource, To update the semi-persistent time-domain characteristics while the resource is active. A QCL hypothesis for tracking CSI-RS or TRS resources.

[0112] In some instances, the received signaling may include flags or bits used to activate the resource or a set of resources associated with it.

[0113] After receiving the signaling, the UE: Apply the indicated TCI state to the One CSI-RS resource or TRS resource used for tracking, or Assumptions indicated Each SSB resource or CSI-RS resource and the aforementioned The CSI-RS or TRS resource used for tracing is quasi-co-located with respect to the indicated or specified / predetermined QCL type.

[0114] With this signaling, the UE can continuously transmit semi-persistent resources without any transmission interruption for applying TCI state changes.

[0115] In some embodiments, after at least one of the following events occurs a time slot or After milliseconds, the UE applies the TCI state or QCL assumption to the CSI-RS / TRS resource / resource set: Receive PHY, MAC, or higher-level signaling for the following purposes: Provide TCI state or QCL assumptions for the CSI-RS / TRS resource / resource set, or Activate the CSI-RS / TRS resource / resource set; Transmissions corresponding to PDSCH / PDCCH acknowledgment messages (e.g., Hybrid Automatic Repeat Request (HARQ) Acknowledgment (ACK) messages) that include PHY, MAC, or higher-layer signaling for the following purposes: Provide TCI state or QCL assumptions for the CSI-RS / TRS resource / resource set, or Activate the CSI-RS / TRS resource / resource set.

[0116] In some embodiments, the timing for resetting operations that estimate, measure, or trace parameters from RS resources / resource sets is the same as the time slot, symbol, or timing for applying / performing TCI state updates or QCL hypothesis updates to the RS resources / resource sets. In some examples, the resource / resource set may be a CSI-RS / TRS resource / resource set used for tracing.

[0117] In some embodiments, or The value is defined by the communication protocol specification, meaning it is known to the UE. In some cases, this value depends at least on the set of parameters of the waveform used to transmit at least the CSI-RS resource or TRS resource, or the set of parameters of the waveform generally used in the DL.

[0118] The above discussion covers resetting the estimation, tracking, or measurement process of parameters. The following discussion addresses the impact of resetting on applying the estimated values ​​of parameters to channels and RSs that use these parameters for reception and transmission.

[0119] Exemplary timelines adapted to the QCL assumptions for tracking reference signals based on some embodiments of this paper, and corresponding UE behaviors. Figure 3 As shown in the image.

[0120] It should be noted that any moment or point in time mentioned in this disclosure may refer to a specific moment, or it may refer to a time slot, symbol, or subframe within a radio frame. Any combination of any number of radio frame structures or parameters and / or time units may be used to represent the value of a specific moment or point in time.

[0121] In some embodiments, the UE is configured to: Receive PHY, MAC, or higher-layer signaling for the following purposes: Update the TCI status or QCL assumptions of periodic or semi-persistent CSI-RS or TRS resources or cause them to be updated; or Activate or deactivate the transmission of semi-persistent CSI-RS or TRS resources, and Use parameters determined, measured, estimated, or traced from the CSI-RS or TRS resources to: Receive DL channel or RS (one or more ports); or Calculate the transmit (Tx) power of the UL channel or RS.

[0122] In some embodiments, the UE at time Receive PHY, MAC, or higher-layer signaling for the following purposes: Update the TCI status or QCL assumption of the CSI-RS or TRS resource or cause it to be updated; or Activate or deactivate the transmission of the CSI-RS or TRS resource.

[0123] In some embodiments, the UE is configured to, upon receiving PHY, MAC, or higher-layer signaling for the following purposes: Update the TCI status or QCL assumption of the CSI-RS or TRS resource or cause it to be updated; or Activate or deactivate the transmission of the CSI-RS or TRS resource; Then, use the channel parameter values ​​previously estimated or calculated from CSI-RS or TRS resources to: Receive DL channel or RS, or Calculate the transmit (Tx) power of the UL channel or RS.

[0124] According to the above embodiments, the UE is configured to at time The channel parameter values ​​previously estimated or calculated from CSI-RS or TRS resources are then used for the intended purpose.

[0125] In some instances, the DL channel or RS is quasi-co-located with the CSI-RS resource or TRS resource, or is assumed by the UE to be quasi-co-located.

[0126] In some instances, the CSI-RS or TRS resources are used / indicated / configured as a path loss reference for the UL channel or RS.

[0127] In some cases, the UE is configured to use values ​​of channel parameters previously determined, estimated, traced, or calculated from CSI-RS or TRS resources to obtain information from (labeled as...) (The following times) begin: When applying the TCI state or QCL assumption to the CSI-RS resource or TRS resource, or The time to deactivate or activate the CSI-RS or TRS resource, or The reset time of the estimation / tracking operation for the parameters, or The time following the reset of the estimation / tracking operation of the parameters. Until (marked as) At a predetermined or specified time following one of the above times, execute: Receive DL channel or RS, or Calculate the transmit (Tx) power of the UL channel or RS.

[0128] In some embodiments, time With time The duration between these intervals is a predetermined or fixed value in the communication protocol specification; that is, it is known to the UE. In some cases, That is, time When it happened after.

[0129] In some embodiments, the value of the parameter previously determined, estimated, tracked, or calculated from CSI-RS or TRS resources is at time [time missing]. Previously determined / estimated / calculated / tracked.

[0130] In some embodiments, the UE is configured to report and , or the difference ( Related UE capability values.

[0131] In some embodiments, time With time Duration between (marked as) ) is a fixed value in the communication protocol specification, that is, it is known to the UE.

[0132] In some embodiments, The value is given in time slots, symbols, or milliseconds.

[0133] In some embodiments, the UE is configured to use: At any moment With time Between, or At any moment At that time The channel parameter values ​​are estimated or calculated from CSI-RS or TRS resources, and are used at time... Then receive the transmit (Tx) power of the DL channel or RS or calculate the transmit (Tx) power of the UL channel or RS.

[0134] In some embodiments, the UE is configured to at time The current or latest values ​​of the parameters determined, estimated or calculated from CSI-RS or TRS resources are then used to receive the DL channel or RS or to calculate the transmit (Tx) power of the UL channel or RS.

[0135] In the above method, the DL channel or RS is quasi-co-located with the CSI-RS or TRS resources, and / or the UL channel or RS uses the CSI-RS or TRS resources as a path loss reference.

[0136] In some embodiments, the UE is configured to: Received from network node: Configuration and / or indication of CSI-RS or TRS resources or a set of CSI-RS or TRS resources containing one or more CSI-RS or TRS resources; Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the QCL assumption for transmissions on said DL channels or RSs assumes that the source RS is said CSI-RS or TRS resource or a resource from said CSI-RS or TRS resource set; or configuration and / or indication and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is said CSI-RS or TRS resource or a resource from said CSI-RS or TRS resource set; and Used to update the TCI status or QCL assumption of the CSI-RS or TRS resource or the resources in the CSI-RS or TRS resource set, or the PHY signaling or MAC signaling or higher-layer signaling that causes the update. At a predetermined or specified time after receiving the signaling, the updated QCL assumption or TCI state is applied to the CSI-RS or TRS resource or the resources in the CSI-RS or TRS resource set; At the time or prior to the application of the QCL assumption or TCI state, determine or obtain a value for at least one of the following from the CSI-RS or TRS resources: At least the channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; One or more path loss estimates; and A specified or predetermined period following the application of the QCL assumption or TCI state to the CSI-RS or TRS resource or a resource in the CSI-RS or TRS resource set. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0137] In some embodiments, the UE is configured to perform a reset on the operation of determining, estimating, measuring, or tracking one or more channel parameters or path losses from the CSI-RS or TRS resources / resource set, when, before, or after the updated QCL assumptions or TCI states are applied to the CSI-RS or TRS resources / resource set.

[0138] The UE behaviors that may be involved in the reset process have been described above in this invention disclosure.

[0139] In some embodiments, the specified or predetermined time period It is given in units of time slots, milliseconds, or symbols. It may be given in the communication protocol specification, or depend on the set of parameters used to transmit the CSI-RS or TRS, or the set of parameters generally used in DL transmission.

[0140] In some embodiments, the CSI-RS or TRS resource / resource set is configured to have periodic or semi-persistent time-domain characteristics. In some examples, the resource / resource set is used for tracking.

[0141] The above scheme can be applied to systems that are always active (possessing periodic time-domain characteristics) and whose TCI is changed only through underlying signaling. State's DL RS. The possible timeline of events involved in this scheme is as follows: Figure 3 As shown in the diagram. If semi-persistent RS for tracking is enabled, then the following procedure needs to be performed.

[0142] In some embodiments, the UE is configured to: Received from network node: Configuration and / or indication of CSI-RS or TRS resources or a set of CSI-RS or TRS resources containing one or more CSI-RS or TRS resources; Configuration, indication, and / or scheduling of transmissions for DL ​​channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the QCL assumption for transmissions of the DL channels or RSs assumes that the source RS is the CSI-RS or TRS resource or a resource from the CSI-RS or TRS resource set; or configuration and / or indication and / or scheduling of transmissions for UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource or a resource from the CSI-RS or TRS resource set; The first PHY or MAC or higher-layer signaling used to deactivate the CSI-RS or TRS resource / resource set; and An instruction for activating or reactivating the CSI-RS or TRS resource / resource set, received together with the first signaling or via another different signaling; At or before the CSI-RS or TRS resource or resource set is deactivated, determine or obtain at least one of the following values ​​from the CSI-RS or TRS resource or resource set: At least the channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use or apply at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0143] In some embodiments, the reset of the estimation, tracking, or measurement process for channel parameters or path loss is performed after receiving deactivation signaling.

[0144] In some embodiments, the CSI-RS or TRS resource / resource set is configured to have periodic or semi-persistent time-domain characteristics. In some examples, the resource / resource set is used for tracking.

[0145] In some embodiments, a CSI-RS or TRS resource / resource set is deactivated via a first signaling and reactivated via the same signaling or via a second / different signaling. In one example, a MAC-CE message or PDCCH may indicate the deactivation and activation / reactivation (e.g., subsequent activation) of a CSI-RS or TRS resource / resource set. In a second example, the signaling for deactivation and reactivation is received in two separate MAC-CE messages or PDCCHs. In an option of the second example, the two MAC-CE messages are received in the same PDSCH.

[0146] In some embodiments, the UE is configured to respond after at least one of the following events occurs. One or more channel parameters determined, estimated, measured, or traced at or before the deactivation of the CSI-RS or TRS resource / resource set begin to be used after a time slot / symbol / millisecond: The CSI-RS or TRS resource / resource set is deactivated. The CSI-RS or TRS resource / resource set is reactivated. And after the CSI-RS or TRS resource / resource set is reactivated. Use ends after one time slot / symbol / millisecond. In some cases, and / or .

[0147] In some embodiments, the UE is configured to: Received from network node: Configuration and / or indication of a first CSI-RS or TRS resource or resource set and a second CSI-RS or TRS resource or resource set, wherein the CSI-RS or TRS resource set contains one or more CSI-RS or TRS resources. Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the QCL assumption for transmissions on said DL channels or RSs assumes that the source RS is the first CSI-RS or TRS resource or a resource from the first CSI-RS or TRS resource set; or configuration and / or indication and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the first CSI-RS or TRS resource or a resource from the first CSI-RS or TRS resource set. The first PHY, MAC, or higher-layer signaling used to deactivate the first CSI-RS or TRS resource / resource set, and An indication for activating the second CSI-RS or TRS resource / resource set, received together with the first signaling or via another different signaling; renew: At least one QCL assumption for receiving the DL channel (e.g., PDSCH or PDCCH) or RS (e.g., CSI-RS) (one or more ports); or The path loss reference for the UL channel or RS (e.g., PUSCH, PUCCH, or SRS) is as follows. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource / resource set.

[0148] In some embodiments, a first CSI-RS or TRS resource / resource set is activated via a first signaling, and a second CSI-RS or TRS resource / resource set is activated via the same signaling or via a second / different signaling. In one option, the first CSI-RS or TRS and the second CSI-RS or TRS are activated by the same MAC-CE message or PDCCH. In a second option, the first CSI-RS or TRS is activated by a first MAC-CE message or PDCCH, and the second CSI-RS or TRS is activated by a second MAC-CE message or PDCCH. In one example of the second option, the first and second MAC-CE messages are acquired in the same PDSCH.

[0149] In some embodiments, the first and second CSI-RS or TRS resources / resource sets are configured to have periodic or semi-persistent time-domain characteristics. In some examples, they are used for tracking.

[0150] In some embodiments, the second / different signaling is received before or after the first signaling.

[0151] If the UE receives activation signaling for CSI-RS or TRS resources / resource sets, the UE performs its resource reception procedure after receiving the activation signaling; that is, its resources are sent by the network node after sending the activation signaling.

[0152] If the UE receives deactivation signaling for CSI-RS or TRS resources / resource sets, it indicates that the network node will stop sending CSI. If RS or TRS is triggered, the UE will no longer receive its resources.

[0153] Signaling used to activate a CSI-RS or TRS resource / resource set can also provide the TCI state or QCL assumption to be applied to the CSI-RS or TRS resource.

[0154] As can be seen from the above, the second possible scenario requires performing QCL changes on all channels and RSs that have previously used the deactivated first CSI-RS resource / resource set as the QCL source.

[0155] In some embodiments, the UE is configured to update: At least one QCL assumption for receiving the DL channel (e.g., PDSCH or PDCCH) or RS (e.g., CSI-RS) (one or more ports), wherein the second CSI-RS or TRS resource or a resource from the second CSI-RS or TRS resource set is updated as the QCL source, or The path loss reference for the UL channel or RS (e.g., PUSCH, PUCCH, or SRS) is wherein the second CSI-RS or TRS resource or resources from the second CSI-RS or TRS resource set are updated as the path loss reference.

[0156] In some embodiments, the UE is configured to operate during at least one of the following time periods: Within a predetermined or specified period after the first CSI-RS or TRS resource / resource set is deactivated, or During a predetermined or specified period after the second CSI-RS or TRS resource / resource set is activated, implement: Assuming the DL channel / RS is quasi-co-located with the deactivated first CSI-RS or TRS resource or a resource from that resource set, or Obtain path loss estimates / measurements for UL channel or RS transmissions from the first deactivated CSI-RS or TRS resource or from resources in that resource set.

[0157] In some embodiments, the UE is configured to begin after the first CSI-RS or TRS resource / resource set is deactivated. One time slot / symbol / millisecond later and ending after the first or second CSI-RS or TRS resource / resource set is activated. QCL assumptions are performed or path loss estimates obtained from the deactivated first CSI-RS or TRS resource / resource set within a predetermined or specified time period after a time slot / symbol / millisecond. In some cases, In some cases, The aforementioned , The values ​​of the durations and / or the durations between them are given in the communication protocol specification, that is, they are known to the UE.

[0158] After deactivating the first CSI-RS or TRS resource / resource set, the QCL assumptions and path loss references can be maintained for a certain period of time after the next resource / resource set used for transmission is reactivated. This helps stabilize the estimation results obtained from the activated resource / resource set and provides guidance to the UE on maintaining the continuity of various channel parameter estimations at the UE end, even if the RS used to provide the estimation is interrupted.

[0159] For beam switching initiated by the UE for use in tracking RS In the method described above, the network node modifies the QCL setting of the RS used for tracking without requiring a UE-initiated trigger. The decision to update rests entirely with the network node. However, this process could also be initiated by the UE via DL measurements, particularly the SSB.

[0160] In some embodiments, the UE is configured to send an indication of at least one TCI status to the network node via PUSCH or PUCCH, and in some examples, the at least one TCI status is a CSI-RS or TRS resource indication.

[0161] In some embodiments, after the above signaling is sent, the UE receives, via PHY or MAC or a higher layer, signaling to update the TCI state of at least one CSI-RS or TRS resource using the at least one TCI state in the indication sent by the UE.

[0162] In some embodiments, the UE is configured to send an indication to the network node via PUSCH or PUCCH representing at least one of the following: At least one SSB ID / index number; At least one CSI-RS resource ID / index number.

[0163] In some embodiments, after sending the above signaling, the UE receives signaling from the network node via PHY or MAC or a higher layer to update the QCL assumptions of at least one CSI-RS or TRS resource, wherein the at least one SSB or CSI-RS in the indication sent by the UE is used as the source RS of the QCL.

[0164] In some cases, signaling from network nodes containing IDs of SSB and / or CSI-RS can also be included in the QCL type used in the QCL assumption.

[0165] In some examples, the indicated CSI-RS resource can be configured with the parameter 'repetition'.

[0166] In some examples, the UE is configured to assume that the at least one CSI-RS or TRS resource is quasi-co-located with the at least one SSB via QCL type C and / or, if applicable, QCL type D.

[0167] In some examples, the UE is configured to assume that the at least one CSI-RS or TRS resource is quasi-co-located with the at least one CSI-RS resource configured with 'repetition' via QCL type D quasi-co-addressing, if applicable.

[0168] In some embodiments, the UE is configured to send an indication of at least one TCI state to the network node via PUSCH or PUCCH.

[0169] In this disclosure, the CSI-RS resources discussed are non-zero power (NZP) CSI-RS resources unless explicitly stated to be zero power (ZP).

[0170] In this disclosure, receiving a configuration of a channel or RS resource or resource set by a communication device or UE may mean that the communication device receives information related to the transmission / reception of said channel or RS resource or resource set. This information / configuration may, in some instances, be received by a higher layer (e.g., configuration obtained via the RRC layer). For example, this information may be information regarding at least one of the following used in the transmission / reception of said channel or RS resource or resource set: mapping or allocation of time-domain / frequency-domain / spatial-domain resources, modulation / coding / rate matching information, QCL assumption / TCI state, power control, path loss reference, etc. In some cases, this configuration is provided by a network node.

[0171] In this disclosure, receiving an indication of a channel or RS resource or resource set by a communication device or UE can mean that the communication device receives information regarding at least one of the following used in the transmission or reception of said channel or RS resource or resource set: triggering or activating transmission / reception, indicating TCI state / QCL assumptions, port used for transmission, mapping or allocation of time-domain / frequency-domain / spatial-domain resources, power control, path loss reference, etc. In some examples, this indication is obtained through the PHY layer (e.g., through PDCCH) or through the MAC layer (e.g., MAC-CE). In some cases, this indication is provided by the network node.

[0172] See Figure 4 This illustrates a method performed by a wireless device or a UE according to some embodiments described above. The method, performed by the wireless device or UE (1000), includes: Received from network node (401): Configuration and / or indication of Channel State Information Reference Signal (CSI-RS) or Tracking Reference Signal (TRS) resources; Configuration and / or indication and / or scheduling of transmissions for a downlink (DL) channel or reference signal (RS), wherein the source reference signal (RS) for the quasi-co-location (QCL) assumption of transmissions for said DL channel or RS is said CSI-RS or TRS resource; or configuration and / or indication and / or scheduling of transmissions for an uplink (UL) channel or RS, wherein the reference used to calculate or estimate path loss to calculate UL transmit (Tx) power is said CSI-RS or TRS resource; and One or more Transport Configuration Indicator (TCI) states or QCL assumptions used to update the CSI-RS or TRS resources, or physical layer (PHY) signaling or media access control (MAC) signaling or higher layer signaling that causes them to be updated. The method further includes: At a predetermined or specified time after receiving the signaling, the updated TCI status or QCL assumption will be applied (402) to the CSI-RS or TRS resource; At or before the application of the TCI state or QCL assumption, determine or obtain (403) a value of at least one of the following from the CSI-RS or TRS resource: Channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; One or more path loss estimates; A specified or predetermined period after the TCI status or QCL assumption is applied to the CSI-RS or TRS resource. Use or apply at least one of the values ​​determined or obtained by (404) for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0173] See Figure 5 This illustrates a method performed by a wireless device according to some embodiments described above. The method is performed by the wireless device or UE (1000) and includes: Received from network node (501): Configuration and / or indication of CSI-RS or TRS resources; Configuration and / or indication and / or scheduling of transmissions to DL channels or RS, wherein the source reference signal RS for the QCL assumption of the transmission of the DL channel or RS is the CSI-RS or TRS resource, or configuration and / or indication and / or scheduling of transmissions to UL channels or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource; The first PHY signaling, first MAC signaling, or first higher-layer signaling used to deactivate the CSI-RS or TRS resources; and An instruction for activating or reactivating the CSI-RS or TRS resource, received together with the first signaling or via another different signaling; At or before the CSI-RS or TRS resource is deactivated, determine or obtain (502) a value of at least one of the following from the CSI-RS or TRS resource: At least one or more channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use or apply at least one of the values ​​determined or obtained by (503) for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0174] See Figure 6 This illustrates a method performed by a wireless device according to some embodiments described above. The method is performed by the wireless device or UE (1000) and includes: Received from network node (601): The configuration and / or indication of a first CSI-RS or TRS resource and a second CSI-RS or TRS resource, wherein the first and second CSI-RS or TRS resources are configured for tracking and have periodic or semi-persistent time-domain characteristics. The configuration, indication, and / or scheduling of transmissions for the DL channel or RS, wherein the source reference signal RS for the quasi-co-located QCL assumption of the transmission of the DL channel or RS is the first CSI-RS or TRS resource, or the configuration, indication, and / or scheduling of transmissions for the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the first CSI-RS or TRS resource. The first PHY, MAC, or higher-layer signaling used to deactivate the first CSI-RS or TRS resource, and An indication for activating the second CSI-RS or TRS resource, received together with the first signaling or via another different signaling; Update (602): At least one QCL assumption for receiving the DL channel or RS; or The path loss reference for the UL channel or RS. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource.

[0175] A wireless device is also provided for performing the procedures or method steps described above by the wireless device or UE. Figure 10 A simplified block diagram of a wireless device or UE 1000 is shown. The wireless device 1000 includes a processor 1010 or processing circuitry or processing module or processing apparatus 1010; a receiver circuitry or receiver module 1040; a transmitter circuitry or transmitter module 1050; a memory module 1020; and a transceiver circuitry or transceiver module 1030, which may include the transmitter circuitry 1050 and the receiver circuitry 1040. The wireless device 1000 also includes an antenna system 1060, which includes antenna circuitry for transmitting signals to and receiving signals from at least network nodes or other wireless devices. The antenna system uses the beamforming techniques described above.

[0176] The wireless device 1000 can belong to any wireless access technology, including 4G or LTE, LTE-A, 5G, enhanced 5G, or combinations thereof that support beamforming technology. The wireless device includes a processor and a memory containing instructions executable by the processor. The wireless device 1000 is operable or can be configured to perform any of the wireless device-related embodiments described above.

[0177] The processing module / circuit 1010 includes a processor, microprocessor, application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), etc., and may also be referred to as a "processor". The processor 1010 controls the operation of the wireless device and its components. The memory (circuit or module) 1020 includes random access memory (RAM), read-only memory (ROM), and / or other types of memory for storing data and instructions available for use by the processor 1010. Generally, it should be understood that in one or more embodiments, the wireless device 1000 includes fixed or programmable circuitry configured to perform the operations of any of the embodiments disclosed herein.

[0178] In at least one such example, processor 1010 includes a microprocessor, microcontroller, DSP, ASIC, FPGA, or other processing circuitry configured to execute instructions from a computer program stored in a non-transitory computer-readable medium located within or accessible by the processing circuitry. Here, "non-transitory" does not necessarily refer to permanent or immutable storage, but may include storage in operational memory or volatile memory, though the term at least implies storage with some degree of persistence. Execution of the program instructions may result in the processing circuitry being specifically adapted or configured to perform the various operations related to the wireless device described in this disclosure. Furthermore, it should be understood that wireless device 1000 may include other additional components.

[0179] The wireless device 1000 executes instructions stored in the memory 1020 via the processor 1010, thereby enabling the wireless device to perform any of the aforementioned embodiments related to the actions performed by the wireless device, wherein some of the operations are presented in the appended claims 1-22.

[0180] A computer program is also provided, the computer program containing instructions that, when executed by a processor 1010 of a wireless device, cause the processor 1010 to perform the method according to any of the foregoing embodiments.

[0181] See Figure 7 This illustrates a method performed by a network node (1100) according to some embodiments described above. The method includes: Send (701) to the wireless device or user equipment (UE): Configuration and / or indication of CSI-RS or TRS resources, Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the source reference signal RS assumed for the quasi-co-location QCL of the transmissions on the DL channels or RSs is the CSI-RS or TRS resource; or configuration, indication, and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference used to calculate or estimate path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource. The TCI status or QCL assumption used to update the CSI-RS or TRS resource, or the PHY, MAC, or higher-layer signaling that causes the update. So that the UE described in (702) can: At a predetermined or specified time after receiving the signaling, the updated TCI-State or QCL assumptions will be applied to the CSI-RS or TRS resources; At the time or prior to the application of the QCL assumption or TCI state, determine or obtain a value for at least one of the following from the CSI-RS or TRS resources: At least the channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS, Path loss estimate; A specified or predetermined period after the QCL assumption or TCI status is applied to the CSI-RS or TRS resource. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0182] See Figure 8 This illustrates a method performed by a network node (1100) according to some embodiments described above. The method includes: Send (801) to the wireless device or UE: Configuration and / or indication of CSI-RS or TRS resources, Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the source reference signal RS assumed for the quasi-co-location QCL of the transmissions on the DL channels or RSs is the CSI-RS or TRS resource; or configuration, indication, and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference used to calculate or estimate path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource. The first PHY layer, MAC layer, or higher layer signaling used to deactivate the CSI-RS or TRS resources, and An instruction for activating or reactivating the CSI-RS or TRS resource, received together with the first signaling or via another different signaling; So that the UE described in (802) can: Determine or obtain at least one of the following values ​​from the CSI-RS or TRS resource when or before the CSI-RS or TRS resource is deactivated: At least the channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS, Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0183] See Figure 9 This illustrates a method performed by a network node (1100) according to some embodiments described above. The method includes: Send (901) to User Equipment (UE) (1000): The configuration and / or indication of a first CSI-RS or TRS resource and a second CSI-RS or TRS resource, wherein the first and second CSI-RS or TRS resources are configured for tracking and have periodic or semi-persistent time-domain characteristics. The configuration, indication, and / or scheduling of transmissions for the DL channel or RS, wherein the source reference signal RS for the quasi-co-located QCL assumption of the transmission of the DL channel or RS is the first CSI-RS or TRS resource, or the configuration, indication, and / or scheduling of transmissions for the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the first CSI-RS or TRS resource. The first PHY layer, MAC layer, or higher layer signaling used to deactivate the first CSI-RS or TRS resource, and An indication for activating the second CSI-RS or TRS resource, either together with the first signaling or indicated by another different signaling; So that the UE can update: At least one QCL assumption for receiving the DL channel or RS; or The path loss reference for the UL channel or RS. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource.

[0184] To perform the procedures or methods described above by the network node, a network node is also provided. Figure 11A simplified block diagram of network node 1100 is shown. Network node 1100 includes a processor 1110 or processing circuitry or processing module or processing device 1110; a receiver circuitry or receiver module 1140; a transmitter circuitry or transmitter module 1150; a memory module 1120; and a transceiver circuitry or transceiver module 1130, which may include the transmitter circuitry 1150 and the receiver circuitry 1140. Network node 1100 also includes an antenna system 1160, which includes antenna circuitry for transmitting signals to and receiving signals from at least one wireless device. The antenna system uses the beamforming techniques described above.

[0185] Network node 1100 can belong to any wireless access technology, including 4G or LTE, LTE-A, 5G, enhanced 5G, or combinations thereof that support beamforming technology. The network node includes a processor and a memory containing instructions executable by the processor. The network node 1100 is operable or can be configured to perform any of the embodiments described above relating to network node 1100.

[0186] Processing module / circuit 1110 includes a processor, microprocessor, application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), etc., and may also be referred to as a "processor". Processor 1110 controls the operation of the network node and its components. Memory (circuit or module) 1120 includes random access memory (RAM), read-only memory (ROM), and / or other types of memory for storing data and instructions available for use by processor 1110. Generally, it should be understood that in one or more embodiments, the network node includes fixed circuitry or programmable circuitry configured to perform the operations of any of the embodiments disclosed herein.

[0187] In at least one such example, processor 1110 includes a microprocessor, microcontroller, DSP, ASIC, FPGA, or other processing circuitry configured to execute instructions from a computer program stored in a non-transitory computer-readable medium located within or accessible by the processing circuitry. Here, "non-transitory" does not necessarily refer to permanent or immutable storage, but may include storage in operational memory or volatile memory, though the term at least implies storage with some degree of persistence. Execution of the program instructions may result in the processing circuitry being specifically adapted or configured to perform the various operations related to the network node in this disclosure. Furthermore, it should be understood that network node 1100 may include other additional components. Network node 1100 may also be considered a transmit-receive point (TRP).

[0188] Network node 1100 executes instructions stored in memory 1120 via processor 1110, thereby enabling network node 1100 to implement any of the aforementioned embodiments related to the operations performed by the network node, wherein some of the operations are presented in some of the described embodiments.

[0189] A computer program is also provided, the computer program comprising instructions that, when executed by a processor 1110 of a network node, cause the processor 1110 to perform a method according to any of the foregoing embodiments.

[0190] According to some embodiments herein, a method performed by a wireless device or user equipment (UE) is proposed, the method comprising: Received from network node: Configuration and / or indication of Channel State Information Reference Signal (CSI-RS) or Tracking Reference Signal (TRS) resources; Configuration and / or indication and / or scheduling of transmissions for a downlink (DL) channel or reference signal (RS), wherein the source reference signal (RS) for the quasi-co-location (QCL) assumption of the transmission of the DL channel or RS is the CSI-RS or TRS resource; or configuration and / or indication and / or scheduling of transmissions for an uplink (UL) channel or RS, wherein the reference used to calculate or estimate path loss to calculate uplink (UL) transmit (Tx) power is the CSI-RS or TRS resource; and One or more Transport Configuration Indicator (TCI) states or QCL assumptions used to update the CSI-RS or TRS resources, or physical layer (PHY) signaling or media access control (MAC) signaling or higher layer signaling that causes them to be updated. The method further includes: At a predetermined or specified time after receiving the signaling, the updated TCI-State or QCL assumptions will be applied to the CSI-RS or TRS resources; At or before the application of the TCI state or QCL assumption, determine or obtain a value for at least one of the following from the CSI-RS or TRS resources: Channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; One or more path loss estimates; A specified or predetermined period after the TCI status or QCL assumption is applied to the CSI-RS or TRS resource. Use or apply at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0191] According to some embodiments described herein, the UE is configured as follows: Receiving at least includes The PDCCH or MAC-CE message for the ID of each TCI state; and The m-th indicated TCI state is applied to the m-th CSI-RS or TRS resource in ascending order of CSI-RS or TRS ID / index number, where N CSI-RS or TRS resources are configured for the UE by a higher layer.

[0192] According to some embodiments described herein, the UE is configured with The method further includes: a CSI-RS or TRS resource. Receive a PDCCH or MAC-CE message from a network node, wherein the PDCCH or MAC-CE message indicates at least: The ID of a Synchronization Signal Block (SSB) resource; and / or The ID of a CSI-RS resource; Perform or apply QCL assumptions or associations between the following pairs: Between M configured CSI-RS or TRS resources and M indicated SSB resources; and / or Between M configured CSI-RS or TRS resources and M indicated CSI-RS resources.

[0193] According to some embodiments of this document, the QCL type used in the QCL assumption is provided in the PDCCH or MAC-CE message.

[0194] According to some embodiments herein, a method executed by a UE is proposed, the method comprising: Received from network node: Configuration and / or indication of CSI-RS or TRS resources; Configuration and / or indication and / or scheduling of transmissions to DL channels or RS, wherein the source reference signal RS for the QCL assumption of the transmission of the DL channel or RS is the CSI-RS or TRS resource, or configuration and / or indication and / or scheduling of transmissions to UL channels or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource; The first PHY signaling, first MAC signaling, or first higher-layer signaling used to deactivate the CSI-RS or TRS resources; and An instruction for activating or reactivating the CSI-RS or TRS resource, received together with the first signaling or via another different signaling; At or before the CSI-RS or TRS resource is deactivated, determine or obtain at least one of the following values ​​from the CSI-RS or TRS resource: At least one or more channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use or apply at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0195] According to some embodiments herein, the UE is configured to perform a reset on the operation of determining, estimating, measuring, or tracking one or more channel parameters or path losses from the CSI-RS or TRS resources / resource set when, before, or after an updated TCI state or QCL assumption is applied to the CSI-RS or TRS resources / resource set.

[0196] According to some embodiments herein, resetting operations on RS resource estimation, measurement, or tracking parameters includes at least one of the following: The operation of tracking the parameters from the RS resource is performed until a predetermined or specified reset time, after which it restarts. At a predetermined or specified reset time, before, or after, at least one value related to the operation of estimating or measuring the parameter from the RS resource will be set to zero. At a predetermined or specified reset time, before, or after, at least one value related to the operational history of the parameter estimated or measured from the RS resource will be cleared or set to zero.

[0197] According to some embodiments herein, the UE is configured to use values ​​of channel parameters previously determined, estimated, tracked, or calculated from CSI-RS or TRS resources to select from channels labeled as... It begins at one of the following times: When applying the TCI state or QCL assumption to the CSI-RS or TRS resource, or The time to deactivate or activate the CSI-RS or TRS resource, or The reset time of the estimation / tracking operation for the parameters, or The time following the reset of the estimation / tracking operation of the parameters. Until marked as At a predetermined or specified time following one of the above times, execute: Receive DL channel or RS, or Calculate the transmit (Tx) power of the UL channel or RS. The previous value of the channel parameter mentioned above is at time [time]. Previously determined / estimated / calculated / tracked.

[0198] According to some embodiments described herein, the UE is configured to use: At any moment With time Between, or At any moment At that time The values ​​of channel parameters obtained from CSI-RS or TRS resource estimation or calculation are used for time... Then receive the transmit (Tx) power of the DL channel or RS or calculate the transmit (Tx) power of the UL channel or RS.

[0199] According to some embodiments in this article, time With time The duration between these intervals is fixed to a specific value in the New Radio (NR) specification, meaning it is known to the UE.

[0200] According to some embodiments in this article, time With time The duration between Provided.

[0201] According to some embodiments herein, the UE is configured to at time The current or latest values ​​of the parameters determined, estimated or calculated from CSI-RS or TRS resources are then used to receive the DL channel or RS or to calculate the transmit (Tx) power of the UL channel or RS.

[0202] According to some embodiments herein, the CSI-RS or TRS resource / resource set is configured as follows: Used for tracing (e.g., a CSI-RS resource / resource set configured with parameter 'trsInfo', or a TRS resource set configured using 'trs-ResourceSetConfig'), and / or It has periodic or semi-persistent time-domain characteristics.

[0203] According to some embodiments of this document, the TCI state or QCL is assumed to be determined by the UE after at least one of the following events occurs. a time slot or Apply to CSI-RS or TRS resources / resource sets after milliseconds: Upon receiving signaling from the PHY layer, MAC layer, or higher layers, the signaling is used for: Provide the TCI state or QCL assumption for the CSI-RS or TRS resource / resource set, or Activate the CSI-RS or TRS resource / resource set; Sending acknowledgment messages (e.g., Hybrid Automatic Repeat Request (HARQ) ACK messages) corresponding to PDSCH or PDCCH signaling, including PHY layer, MAC layer, or higher layer signaling, the signaling being used for: Provide the TCI state or QCL assumption for the CSI-RS or TRS resource / resource set, or Activate the CSI-RS or TRS resource / resource set.

[0204] According to some embodiments herein, the UE is configured to respond after at least one of the following events occurs. After one time slot / symbol / millisecond: The CSI-RS or TRS resource / resource set is deactivated. The CSI-RS or TRS resource / resource set is activated / reactivated. Begin using one or more channel parameters that were determined, estimated, measured, or traced when or before the CSI-RS or TRS resource / resource set was deactivated, and continue using them after the CSI-RS or TRS resource / resource set has been reactivated. Use ends after one time slot / symbol / millisecond.

[0205] According to some embodiments herein, the deactivation and activation / reactivation of CSI-RS or TRS resources / resource sets are indicated by MAC-CE messages or PDCCH.

[0206] According to some embodiments herein, a method executed by a UE is proposed, the method comprising: Received from network node: The configuration and / or indication of a first CSI-RS or TRS resource and a second CSI-RS or TRS resource, wherein the first and second CSI-RS or TRS resources are configured for tracking and have periodic or semi-persistent time-domain characteristics. The configuration, indication, and / or scheduling of transmissions for the DL channel or RS, wherein the source reference signal RS for the quasi-co-located QCL assumption of the transmission of the DL channel or RS is the first CSI-RS or TRS resource, or the configuration, indication, and / or scheduling of transmissions for the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the first CSI-RS or TRS resource. The first PHY, MAC, or higher-layer signaling used to deactivate the first CSI-RS or TRS resource, and An indication for activating the second CSI-RS or TRS resource, received together with the first signaling or via another different signaling; renew: At least one QCL assumption for receiving the DL channel or RS; or The path loss reference for the UL channel or RS. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource.

[0207] According to some embodiments described herein, the UE is configured to update: At least one QCL assumption for receiving the DL channel or RS (one or more ports), wherein the second CSI-RS or TRS resource or a resource from the second CSI-RS or TRS resource set is updated as a quasi-co-located QCL source, or The path loss reference for the UL channel or RS, wherein the second CSI-RS or TRS resource or the resource from the second CSI-RS or TRS resource set is updated as the path loss reference.

[0208] According to some embodiments herein, the UE is configured to operate during at least one of the following time periods: Within a predetermined or specified period after the first CSI-RS or TRS resource / resource set is deactivated, or Within a predetermined or specified period after the second CSI-RS or TRS resource / resource set is activated, implement: Assume that the DL channel / RS is deactivated with the first CSI-RS or TRS resource or a resource quasi-co-located QCL-ed from that resource set, or Obtain path loss estimates / measurements for UL channel or RS transmissions from the first deactivated CSI-RS or TRS resource or from resources in that resource set.

[0209] According to some embodiments herein, the UE is configured to, starting after the first CSI-RS or TRS resource / resource set is deactivated One time slot / symbol / millisecond later and ending after the first or second CSI-RS or TRS resource / resource set is activated. Within a predetermined or specified time period following a time slot / symbol / millisecond, QCL assumptions are performed from the deactivated first CSI-RS or TRS resource / resource set, or a path loss estimate obtained from the deactivated first CSI-RS or TRS resource / resource set is used, wherein... , The value of the duration between the two times mentioned above is provided by the communication protocol specification.

[0210] According to some embodiments of this document, the UE is configured as follows: Receive indications of one or more TCI states or QCL assumptions along with PHY, MAC, or higher-layer signaling indicating the activation of CSI-RS or TRS resources / resource sets. Apply the one or more TCI states or QCL assumptions to the activated CSI-RS or TRS resources / resource sets.

[0211] According to some embodiments of this document, the DL channel or RS is PDSCH, PDCCH, or CSI-RS, and the UL channel or RS is PUSCH, PUCCH, or SRS.

[0212] According to some embodiments herein, a method executed by a network node is proposed, the method comprising: Send to User Equipment (UE): Configuration and / or indication of CSI-RS or TRS resources, Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the source reference signal RS assumed for the quasi-co-location QCL of the transmissions on the DL channels or RSs is the CSI-RS or TRS resource; or configuration, indication, and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference used to calculate or estimate path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource. The TCI status or QCL assumption used to update the CSI-RS or TRS resource, or the PHY, MAC, or higher-layer signaling that causes the update. So that the UE can: At a predetermined or specified time after receiving the signaling, the updated TCI-State or QCL assumptions will be applied to the CSI-RS or TRS resources; At the time or prior to the application of the QCL assumption or TCI state, determine or obtain a value for at least one of the following from the CSI-RS or TRS resources: At least the channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS, Path loss estimate; A specified or predetermined period after the QCL assumption or TCI status is applied to the CSI-RS or TRS resource. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0213] According to some embodiments herein, a method executed by a network node is proposed, the method comprising: Send to User Equipment (UE): Configuration and / or indication of CSI-RS or TRS resources, Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the source reference signal RS assumed for the quasi-co-location QCL of the transmissions on the DL channels or RSs is the CSI-RS or TRS resource; or configuration, indication, and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference used to calculate or estimate path loss to calculate UL transmit (Tx) power is the CSI-RS or TRS resource. The first PHY layer, MAC layer, or higher layer signaling used to deactivate the CSI-RS or TRS resources, and An instruction for activating or reactivating the CSI-RS or TRS resource, received together with the first signaling or via another different signaling; So that the UE can: Determine or obtain at least one of the following values ​​from the CSI-RS or TRS resource when or before the CSI-RS or TRS resource is deactivated: At least the channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS, Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit (Tx) power used to transmit the UL channel or RS.

[0214] According to some embodiments herein, a method executed by a network node is proposed, the method comprising: Send to User Equipment (UE): The configuration and / or indication of a first CSI-RS or TRS resource and a second CSI-RS or TRS resource, wherein the first and second CSI-RS or TRS resources are configured for tracking and have periodic or semi-persistent time-domain characteristics. The configuration, indication, and / or scheduling of transmissions for the DL channel or RS, wherein the source reference signal RS for the quasi-co-located QCL assumption of the transmission of the DL channel or RS is the first CSI-RS or TRS resource, or the configuration, indication, and / or scheduling of transmissions for the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit (Tx) power is the first CSI-RS or TRS resource. The first PHY layer, MAC layer, or higher layer signaling used to deactivate the first CSI-RS or TRS resource, and An indication for activating the second CSI-RS or TRS resource, either together with the first signaling or indicated by another different signaling; So that the UE can update: At least one QCL assumption for receiving the DL channel or RS; or The path loss reference for the UL channel or RS. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource.

[0215] As described above, the embodiments of this disclosure have several advantages, including significantly reducing the feedback overhead and computational complexity of wireless devices when used to enhance the tracking of reference signals.

[0216] Throughout this specification, the terms "example" or "exemplary" refer to a particular feature, structure, or characteristic described in connection with that example that is included in at least one embodiment of the present technology. Therefore, the phrase "in one example" or the word "exemplary" appearing throughout this specification does not necessarily refer to the same embodiment.

[0217] In this disclosure, the term "physical layer (PHY) signaling" can refer to signaling received through the physical layer, such as signaling received through a PDCCH or PDSCH. The PDCCH may contain downlink control information (DCI) for providing such signaling.

[0218] In this disclosure, the term "Media Access Control (MAC) signaling" may refer to signaling received through the MAC layer, such as MAC Control Unit (MAC-CE) messages.

[0219] In this disclosure, the term "higher-layer signaling" may, in some cases, refer to signaling received through the Radio Resource Control (RRC) layer. It may also refer to configuration information obtained through the RRC layer.

[0220] Throughout this disclosure, the terms "comprising" or "including" are used in a non-limiting sense, meaning "consisting of at least...". While specific terminology may be used herein, these terms are for general, descriptive purposes only and not for limiting purposes. The embodiments described herein can be applied to any wireless communication system, including LTE or 4G, LTE-A (or LTE-Advanced), 5G, enhanced 5G, WiMAX, WiFi, satellite communications, television broadcasting, etc.

Claims

1. A method performed by a wireless device or a user equipment (UE), characterized in that, The method includes: Received from network node: Configuration and / or indication of Channel State Information Reference Signal (CSI-RS) or Tracking Reference Signal (TRS) resources; Configuration and / or indication and / or scheduling of transmissions for downlink DL channels or reference signals RS, wherein the source reference signal RS assumed by the quasi-co-address QCL for transmissions of said DL channels or RS is said CSI-RS or TRS resource; or configuration and / or indication and / or scheduling of transmissions for uplink UL channels or RS, wherein the reference used to calculate or estimate path loss to calculate uplink UL transmit Tx power is said CSI-RS or TRS resource; and One or more transport configuration indicators TCI status or QCL assumptions used to update the CSI-RS or TRS resources, or physical layer PHY signaling or media access control layer MAC signaling or higher layer signaling that cause them to be updated. The method further includes: At a predetermined or specified time after receiving the signaling, the updated TCI status or QCL assumption will be applied to the CSI-RS or TRS resource; At or before the application of the TCI state or QCL assumption, determine or obtain a value for at least one of the following from the CSI-RS or TRS resources: Channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; One or more path loss estimates; A specified or predetermined period after the TCI status or QCL assumption is applied to the CSI-RS or TRS resource. Use or apply at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit Tx power used to transmit the UL channel or RS.

2. The method according to claim 1, characterized in that, include: Received includes The identifier ID of the TCI state is a message from the Physical Downlink Control Channel (PDCCH) or the Media Access Control Layer Control Unit (MAC-CE). as well as Following the ascending order of CSI-RS or TRS resource identifier IDs, the m-th indicated TCI state is applied to the m-th CSI-RS or TRS resource, where N CSI-RS or TRS resources are configured for the UE by a higher layer, and or .

3. The method according to claim 1 or 2, characterized in that, The UE is configured with The method further includes: a CSI-RS or TRS resource. Receive a PDCCH or MAC-CE message from the network node, wherein the PDCCH or MAC-CE message indicates at least: The ID of the synchronization signal block SSB resource; and / or The ID of a CSI-RS resource; Perform or apply QCL assumptions or associations between the following pairs: Between M configured CSI-RS or TRS resources and M indicated SSB resources; and / or Between M configured CSI-RS or TRS resources and M indicated CSI-RS resources.

4. The method according to claim 3, characterized in that, The QCL type used in the QCL assumption is provided in the PDCCH or MAC-CE message.

5. A method performed by a wireless device or a user equipment (UE), characterized in that, The method includes: Received from network node: Configuration and / or indication of CSI-RS or TRS resources; Configuration and / or indication and / or scheduling of transmissions to the DL channel or RS, wherein the source reference signal RS for the QCL assumption of the transmission of the DL channel or RS is the CSI-RS or TRS resource, or configuration and / or indication and / or scheduling of transmissions to the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate UL transmit Tx power is the CSI-RS or TRS resource. The first PHY signaling, first MAC signaling, or first higher-layer signaling used to deactivate the CSI-RS or TRS resources; and An instruction for activating or reactivating the CSI-RS or TRS resource, received together with the first signaling or via another different signaling; At or before the CSI-RS or TRS resource is deactivated, determine or obtain at least one of the following values ​​from the CSI-RS or TRS resource: At least one or more channel parameters corresponding to the QCL assumption associated with at least one of the DL channels or RS; Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use or apply at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit Tx power used to transmit the UL channel or RS.

6. The method according to any one of claims 1-4 or claim 5, characterized in that, include: Before, during, or after applying updated TCI states or QCL assumptions to CSI-RS or TRS resources / resource sets, a reset is performed on the operations of determining, estimating, measuring, or tracking one or more channel parameters or path losses from the CSI-RS or TRS resources / resource sets.

7. The method according to claim 6, characterized in that, Resetting operations on RS resource estimation, measurement, or tracking parameters includes at least one of the following: The operation of tracking the parameters from the RS resource is performed until a predetermined or specified reset time, after which it restarts. At a predetermined or specified reset time, before, or after, at least one value related to the operation of estimating or measuring the parameter from the RS resource will be set to zero. At a predetermined or specified reset time, before, or after, at least one value related to the operational history of the parameter estimated or measured from the RS resource will be cleared or set to zero.

8. The method according to any one of claims 1-4 or any one of claims 5-7, characterized in that, The UE is configured to use values ​​of channel parameters previously determined, estimated, tracked, or calculated from CSI-RS or TRS resources to retrieve data from a channel marked as... It begins at one of the following times: When applying the TCI state or QCL assumption to the CSI-RS or TRS resource, or The time to deactivate or activate the CSI-RS or TRS resource, or The reset time of the estimation / tracking operation for the parameters, or The time following the reset of the estimation / tracking operation of the parameters. Until marked as At a predetermined or specified time following one of the above times, execute: Receive DL channel or reference signal RS, or Calculate the transmit Tx power of the UL channel or reference signal RS. The previous value of the channel parameter mentioned above is at time [time]. Previously determined / estimated / calculated / tracked.

9. The method according to claim 8, characterized in that, The UE is configured to use: At any moment With time Between, or At any moment At that time The values ​​of channel parameters obtained from CSI-RS or TRS resource estimation or calculation are used for time... Then receive the DL channel or reference signal RS or calculate the transmit Tx power of the UL channel or reference signal RS.

10. The method according to claim 8 or 9, characterized in that, time With time The duration between these intervals is fixed to a specific value in the New Radio (NR) specification.

11. The method according to any one of claims 8-10, characterized in that, time With time The duration between Provided.

12. The method according to any one of claims 8-11, characterized in that, The UE is configured to at time The current or latest values ​​of the parameters determined, estimated or calculated from CSI-RS or TRS resources are then used to receive the DL channel or RS or to calculate the transmit Tx power of the UL channel or RS.

13. The method according to any one of the preceding claims, characterized in that, The CSI-RS or TRS resource / resource set is configured as follows: Used for tracing (e.g., a CSI-RS resource / resource set configured with parameter 'trsInfo', or a TRS resource set configured using 'trs-ResourceSetConfig'), and / or It has periodic or semi-persistent time-domain characteristics.

14. The method according to any one of claims 1-4 or any one of claims 5-13, characterized in that, The TCI state or QCL assumption is determined by the UE after at least one of the following events occurs. a time slot or Apply to CSI-RS or TRS resources / resource sets after milliseconds: Upon receiving signaling from the PHY layer, MAC layer, or higher layers, the signaling is used for: Provide the TCI state or QCL assumption for the CSI-RS or TRS resource / resource set, or Activate the CSI-RS or TRS resource / resource set; Sending acknowledgment messages (e.g., Hybrid Automatic Repeat Request (HARQ) ACK messages) corresponding to PDSCH or PDCCH signaling, including PHY layer, MAC layer, or higher layer signaling, the signaling being used for: Provide the TCI state or QCL assumption for the CSI-RS or TRS resource / resource set, or Activate the CSI-RS or TRS resource / resource set.

15. The method according to any one of claims 1-4 or any one of claims 5-14, characterized in that, The UE is configured to respond after at least one of the following events occurs. After one time slot / symbol / millisecond: The CSI-RS or TRS resource / resource set is deactivated. The CSI-RS or TRS resource / resource set is activated / reactivated. Begin using one or more channel parameters that were determined, estimated, measured, or traced when or before the CSI-RS or TRS resource / resource set was deactivated, and continue using them after the CSI-RS or TRS resource / resource set has been reactivated. Use ends after one time slot / symbol / millisecond.

16. The method according to any one of claims 5-15, characterized in that, The MAC-CE message or PDCCH indicates the deactivation and activation / reactivation of CSI-RS or TRS resources / resource sets.

17. A method performed by a wireless device or a user equipment (UE), characterized in that, The method includes: Received from network node: The configuration and / or indication of a first CSI-RS or TRS resource and a second CSI-RS or TRS resource, wherein the first and second CSI-RS or TRS resources are configured for tracking and have periodic or semi-persistent time-domain characteristics. The configuration, indication, and / or scheduling of transmissions for the DL channel or RS, wherein the source reference signal RS for the quasi-co-located QCL assumption of the transmission of the DL channel or RS is the first CSI-RS or TRS resource, or the configuration, indication, and / or scheduling of transmissions for the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate the UL transmit Tx power is the first CSI-RS or TRS resource. The first PHY, MAC, or higher-layer signaling used to deactivate the first CSI-RS or TRS resource, and An indication for activating the second CSI-RS or TRS resource, received together with the first signaling or via another different signaling; renew: At least one QCL assumption for receiving the DL channel or RS; or The path loss reference for the UL channel or RS. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource.

18. The method according to claim 17, characterized in that, The UE is configured to update: At least one QCL assumption for receiving the DL channel or RS (one or more ports), wherein the second CSI-RS or TRS resource or a resource from the second CSI-RS or TRS resource set is updated as a quasi-co-located QCL source, or The path loss reference for the UL channel or RS, wherein the second CSI-RS or TRS resource or the resource from the second CSI-RS or TRS resource set is updated as the path loss reference.

19. The method of claim 17 or 18, wherein the UE is configured to operate during at least one of the following time periods: Within a predetermined or specified period after the first CSI-RS or TRS resource / resource set is deactivated, or Within a predetermined or specified period after the second CSI-RS or TRS resource / resource set is activated, implement: Assume that the DL channel or reference signal RS is deactivated with the first CSI-RS or TRS resource or a resource quasi-co-located QCL from that resource set, or Obtain the path loss estimate / measurement of the transmission of the UL channel or reference signal RS from the first deactivated CSI-RS or TRS resource or from resources in that resource set.

20. The method according to any one of claims 17-19, characterized in that, The UE is configured to activate after the first CSI-RS or TRS resource / resource set is deactivated. One time slot / symbol / millisecond later and ending after the first or second CSI-RS or TRS resource / resource set is activated. Within a predetermined or specified time period following a time slot / symbol / millisecond, QCL assumptions are performed from the deactivated first CSI-RS or TRS resource / resource set, or a path loss estimate obtained from the deactivated first CSI-RS or TRS resource / resource set is used, wherein... , The value of the duration between the two times mentioned above is provided by the New Radio (NR) specification.

21. The method according to any one of claims 17-20, characterized in that, The UE is configured as follows: Receive indications of one or more TCI states or QCL assumptions along with PHY, MAC, or higher-layer signaling indicating the activation of CSI-RS or TRS resources / resource sets. Apply the one or more TCI states or QCL assumptions to the activated CSI-RS or TRS resources / resource sets.

22. The method according to any one of claims 1-4, 5-16, or 17-21, characterized in that, The DL channel or RS is PDSCH, PDCCH, or CSI-RS, and the UL channel or RS is PUSCH, PUCCH, or SRS.

23. A method executed by a network node, characterized in that, The method includes: Send to the wireless device or user equipment (UE): Configuration and / or indication of CSI-RS or TRS resources, Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the source reference signal RS assumed for the quasi-co-location QCL of the transmissions on the DL channels or RSs is the CSI-RS or TRS resource; or configuration, indication, and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference used to calculate or estimate path loss to calculate UL transmit Tx power is the CSI-RS or TRS resource. The TCI status or QCL assumption used to update the CSI-RS or TRS resource, or the PHY, MAC, or higher-layer signaling that causes the update. So that the UE can: At a predetermined or specified time after receiving the signaling, the updated TCI-State or QCL assumptions will be applied to the CSI-RS or TRS resources; At the time or prior to the application of the QCL assumption or TCI state, determine or obtain a value for at least one of the following from the CSI-RS or TRS resources: The channel parameters corresponding at least to the QCL assumption associated with at least one of the DL channels or RS. Path loss estimate; A specified or predetermined period after the QCL assumption or TCI status is applied to the CSI-RS or TRS resource. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit Tx power used to transmit the UL channel or RS.

24. A method executed by a network node, characterized in that, The method includes: Send to User Equipment (UE): Configuration and / or indication of CSI-RS or TRS resources, Configuration, indication, and / or scheduling of transmissions on DL channels (e.g., PDSCH or PDCCH) or RSs (e.g., CSI-RS), wherein the source reference signal RS assumed for the quasi-co-location QCL of the transmissions on the DL channels or RSs is the CSI-RS or TRS resource; or configuration, indication, and / or scheduling of transmissions on UL channels (e.g., PUSCH or PUCCH) or RSs (e.g., SRS), wherein the reference used to calculate or estimate path loss to calculate UL transmit Tx power is the CSI-RS or TRS resource. The first PHY layer, MAC layer, or higher layer signaling used to deactivate the CSI-RS or TRS resources, and An instruction for activating or reactivating the CSI-RS or TRS resource, received together with the first signaling or via another different signaling; So that the UE can: Determine or obtain at least one of the following values ​​from the CSI-RS or TRS resource when or before the CSI-RS or TRS resource is deactivated: The channel parameters corresponding at least to the QCL assumption associated with at least one of the DL channels or RS. Path loss estimate; During a specified or predetermined period after the CSI-RS or TRS resource is deactivated. Use at least one of the determined or acquired values ​​for at least one of the following purposes: Receive the DL channel or RS (one or more ports); or Determine the transmit Tx power used to transmit the UL channel or RS.

25. A method executed by a network node, characterized in that, The method includes: Send to User Equipment (UE) or Radio Equipment: The configuration and / or indication of a first CSI-RS or TRS resource and a second CSI-RS or TRS resource, wherein the first and second CSI-RS or TRS resources are configured for tracking and have periodic or semi-persistent time-domain characteristics. The configuration, indication, and / or scheduling of transmissions for the DL channel or RS, wherein the source reference signal RS for the quasi-co-located QCL assumption of the transmission of the DL channel or RS is the first CSI-RS or TRS resource, or the configuration, indication, and / or scheduling of transmissions for the UL channel or RS, wherein the reference for calculating or estimating path loss to calculate the UL transmit Tx power is the first CSI-RS or TRS resource. The first PHY layer, MAC layer, or higher layer signaling used to deactivate the first CSI-RS or TRS resource, and An indication for activating the second CSI-RS or TRS resource, either together with the first signaling or indicated by another different signaling; So that the UE can update: At least one QCL assumption for receiving the DL channel or RS; or The path loss reference for the UL channel or RS. The update is performed after receiving signaling to activate the second CSI-RS or TRS resource.

26. A wireless device (1000) or UE, characterized in that, Includes a processor (1010) and a memory (1020) storing instructions executable by the processor (1010), wherein the wireless device (1000) is operable to perform any of the methods described in the subject matter of any one of claims 1-22.

27. A network node (1100), characterized in that, Includes a processor (1110) and a memory (1120) storing instructions executable by the processor (1110), wherein the network node (1100) is operable to perform any of the methods described in the subject matter of any one of claims 23-25.

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