Autonomous timing advance adjustment for multiple transmit-receive points

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a first reference signal from a first transmit receive point (TRP). The UE may receive a second reference signal from a second TRP. The UE may perform an autonomous timing advance adjustment procedure by: performing a timing advance adjustment procedure; a first timing advance parameter associated with the first TRP is autonomously adjusted based at least in part on a measurement associated with the first reference signal and a second timing advance parameter associated with the second TRP is autonomously adjusted based at least in part on a measurement associated with the second reference signal. Numerous other aspects are described.

Description

Technical Field

[0001] Aspects of the present disclosure generally relate to wireless communications and techniques and apparatus for autonomous timing advance adjustment of multiple transmit-receive points. Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0003] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0004] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region and / or global level. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink, using CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation, so as to better support mobile broadband Internet access. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0005] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include: receiving a first reference signal from a first transmit receive point (TRP). The method may include: receiving a second reference signal from a second TRP. The method may include: performing an autonomous timing advance adjustment process by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal.

[0006] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include: sending a reference signal configuration associated with a TRP to a UE. The method may include: sending a reference signal to the UE based at least in part on the reference signal configuration. The method may include: receiving a communication from the UE, wherein the timing of the communication is based at least in part on a multi-TRP autonomous timing advance adjustment procedure performed by the UE.

[0007] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory and executable by the processor. The instructions, when executed by the processor, may cause the apparatus to receive a first reference signal from a first TRP. The instructions, when executed by the processor, may further cause the apparatus to receive a second reference signal from a second TRP. The instructions, when executed by the processor, may further cause the apparatus to perform an autonomous timing advance adjustment process by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal.

[0008] Some aspects described herein relate to an apparatus for wireless communication at a network node. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory and executable by the processor. The instructions, when executed by the processor, may cause the apparatus to send a reference signal configuration associated with a TRP to a UE. The instructions, when executed by the processor, may further cause the apparatus to send a reference signal to the UE based at least in part on the reference signal configuration. The instructions, when executed by the processor, may further cause the apparatus to receive a communication from the UE, wherein the timing of the communication is based at least in part on a multi-TRP autonomous timing advance adjustment process performed by the UE.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive a first reference signal from a first TRP. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive a second reference signal from a second TRP. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform an autonomous timing advance adjustment process by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal.

[0010] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network node. The instruction set, when executed by one or more processors of the network node, may cause the network node to send a reference signal configuration associated with a TRP to a UE. The instruction set, when executed by one or more processors of the network node, may cause the network node to send a reference signal to the UE based at least in part on the reference signal configuration. The instruction set, when executed by one or more processors of the network node, may cause the network node to receive a communication from the UE, wherein the timing of the communication is based at least in part on a multi-TRP autonomous timing advance adjustment process performed by the UE.

[0011] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for receiving a first reference signal from a first TRP. The apparatus may include components for receiving a second reference signal from a second TRP. The apparatus may include components for performing an autonomous timing advance adjustment process by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal.

[0012] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending a reference signal configuration associated with a TRP to a UE. The apparatus may include means for sending a reference signal to the UE based at least in part on the reference signal configuration. The apparatus may include means for receiving a communication from the UE, wherein the timing of the communication is based at least in part on a multi-TRP autonomous timing advance adjustment procedure performed by the UE.

[0013] The various aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to the drawings and description and as illustrated in the drawings and description.

[0014] The features and technical advantages of examples according to the present disclosure have been outlined quite broadly above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0015] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers). The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to fully understand the above-mentioned features of the present disclosure, a more specific description of the invention briefly summarized above can be obtained by referring to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0017] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0018] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0019] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0020] Figure 4 An example logical architecture of a distributed radio access network according to the present disclosure is illustrated.

[0021] Figure 5 It is a diagram illustrating an example of multi-transmission-reception point (multi-TRP) communication according to the present disclosure.

[0022] Figure 6 is a diagram illustrating an example of TRP differentiation at a UE based at least in part on a control resource set pool index according to the present disclosure.

[0023] Figure 7 is a diagram illustrating an example of downlink transmission and uplink transmission between a network node and a UE in a wireless network according to the present disclosure.

[0024] Figure 8 is a diagram of an example associated with autonomous timing advance adjustment for multiple TRPs according to the present disclosure.

[0025] Fig. 9 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0026] Fig.10 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0027] Fig.11 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0028] Fig.12 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0029] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the protection scope of the disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods that are practiced using other structures, functionality, or structures and functionality in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0030] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0031] Although various aspects may be described herein using terms generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applicable to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RATs (e.g., 6G).

[0032] Figure 11 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, as well as other examples. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), one user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0033] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link, such as an RU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with the core network via a backhaul link, such as a CU. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. For example, the network node 110 may include an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0034] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or the network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1 In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​a cell may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0035] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near RT) RAN intelligent controller (RIC) or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with network node 110). In some aspects, the term "base station" or "network node" may refer to a plurality of devices configured to perform one or more functions. For example, in some distributed systems, each of a number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not the other. In this way, a single device may include more than one base station.

[0036] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communication between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0037] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0038] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0039] UE 120 can be distributed throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, an access terminal, a terminal, a mobile station and / or a subscriber unit. UE 120 can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node and / or any other suitable device configured to communicate via a wireless or wired medium.

[0040] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, a processor component and a memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0041] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0042] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using network node 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0043] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). It should be understood that, although portions of FR1 are greater than 6 GHz, FR1 is often (interchangeably) referred to as the “below 6 GHz” band in various documents and articles. Similar naming issues sometimes occur with respect to FR2, which is often (interchangeably) referred to as the “millimeter wave” band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0044] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz–24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6GHz–71GHz), FR4 (52.6GHz–114.25GHz), and FR5 (114.25GHz–300GHz). Each of these higher frequency bands falls within the EHF band.

[0045] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0046] In some aspects, UE 120 may include a communications manager 140. As described in more detail elsewhere herein, communications manager 140 may receive a first reference signal from a first TRP; receive a second reference signal from a second TRP; and perform an autonomous timing advance adjustment procedure by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal. Additionally or alternatively, communications manager 140 may perform one or more other operations described herein.

[0047] In some aspects, the network node 110 may include a communication manager 150. As described in greater detail elsewhere herein, the communication manager 150 may send a reference signal configuration associated with a TRP to a UE (e.g., UE 120); send a reference signal to the UE based at least in part on the reference signal configuration; and receive communications from the UE, wherein timing of the communications is based at least in part on a multi-TRP autonomous timing advance adjustment procedure performed by the UE. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0048] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0049] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0050] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (eg, T downlink signals) via a corresponding set of antennas 234 (eg, T antennas) (shown as antennas 234a through 234t).

[0051] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0052] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0053] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or may be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0054] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, with reference to Figures 8 to 12 ) or any aspect of any of the methods described herein.

[0055] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component of the modem 232 shown as DEMOD), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to execute the instructions described herein (e.g., reference 20). Figures 8 to 12 ) or any aspect of any of the methods described herein.

[0056] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Fig. 9 The process of 900 Fig.10 1000 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly, or after compilation, conversion, and / or interpretation), may cause the one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Fig. 9 The process of 900 Fig.10 The process 1000 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0057] In some aspects, the UE 120 includes means for receiving a first reference signal from a first TRP; means for receiving a second reference signal from a second TRP; and / or means for performing an autonomous timing advance adjustment procedure by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal. Means for the UE 120 to perform the operations described herein may include, for example, one or more of the following: the communications manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0058] In some aspects, the network node 110 includes means for sending a reference signal configuration associated with a TRP to a UE (e.g., UE 120); means for sending a reference signal to the UE based at least in part on the reference signal configuration; and / or means for receiving a communication from the UE, wherein the timing of the communication is based at least in part on a multi-TRP autonomous timing advance adjustment procedure performed by the UE. In some aspects, means for the network node to perform operations described herein may include, for example, one or more of the communication manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0059] Although Figure 2 The blocks in the 2000 and 2010 are illustrated as distinct components, but the functionality described above for these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described for the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0060] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0061] The deployment of a communication system (such as a 5G NR system) can be arranged in a variety of ways with various components or components. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR base station, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) performing base station functionality can be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. "Network entity" or "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0062] An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), and the like.

[0063] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0064] Figure 3 3 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. The decomposed base station architecture 300 may include a CU 310, which may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed control units (such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0065] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of these units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, and the wireless interface may include a receiver, a transmitter, or a transceiver (such as an RF transceiver), which is configured to receive signals or send signals to one or more of the other units via a wireless transmission medium, or both.

[0066] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, the CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface such as an E1 interface. As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0067] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a MAC layer, and one or more high physical (PHY) layers, at least in part, according to a functional partition such as that defined by 3GPP. In some aspects, one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may also host one or more low PHY layers, such as one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0068] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions based on functional splits (e.g., functional splits defined by 3GPP) such as lower layer functional splits, or low PHY layer functions such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture such as a vRAN architecture.

[0069] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0070] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or in communication with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0071] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0072] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0073] Figure 4 An example logical architecture of a distributed RAN 400 according to the present disclosure is illustrated.

[0074] The 5G access node 405 may include an access node controller 410. The access node controller 410 may be a CU of the distributed RAN 400. In some aspects, a backhaul interface to the 5G core network 415 may terminate at the access node controller 410. The 5G core network 415 may include a 5G control plane component 420 and a 5G user plane component 425 (e.g., a 5G gateway), and a backhaul interface for one or both of the 5G control plane and the 5G user plane may terminate at the access node controller 410. Additionally or alternatively, a backhaul interface to one or more neighbor access nodes 430 (e.g., another 5G access node 405 and / or an LTE access node) may terminate at the access node controller 410.

[0075] The access node controller 410 may include one or more TRPs 435 and / or may communicate with one or more TRPs (e.g., via an F1 control (F1-C) interface and / or an F1 user (F1-U) interface). The TRP 435 may be a DU of the distributed RAN 400. In some aspects, the TRP 435 may correspond to the above combined Figure 1The network node 110 described herein may include a plurality of TRPs 435. For example, different TRPs 435 may be included in different network nodes 110. Additionally or alternatively, multiple TRPs 435 may be included in a single network node 110. In some aspects, the network node 110 may include a CU (e.g., an access node controller 410) and / or one or more DUs (e.g., one or more TRPs 435). In some cases, a TRP 435 may be referred to as a cell, a panel, an antenna array, or an array.

[0076] The TRP 435 may be connected to a single access node controller 410 or to multiple access node controllers 410. In some aspects, there may be a dynamic configuration of split logical functions within the architecture of the distributed RAN 400. For example, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and / or a medium access control (MAC) layer may be configured to terminate at an access node controller 410 or a TRP 435.

[0077] In some aspects, multiple TRPs 435 may transmit communications (e.g., the same communication or different communications) in the same transmit time interval (TTI) (e.g., time slot, mini-slot, subframe, or symbol) or in different TTIs using different quasi-co-location (QCL) relationships (e.g., different spatial parameters, different transmit configuration indicator (TCI) states, different pre-coding parameters, and / or different beamforming parameters). In some aspects, the TCI state may be used to indicate one or more QCL relationships. A TRP 435 may be configured to provide services to a UE 120 individually (e.g., using dynamic selection) or jointly (e.g., using joint transmission with one or more other TRPs 435).

[0078] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0079] Figure 5 5 is a diagram illustrating an example 500 of multi-TRP communication (sometimes referred to as multi-panel communication) according to the present disclosure. Figure 5 As shown, multiple TRPs 505 can communicate with the same UE 120. TRP 505 can correspond to the above combination Figure 4 TRP 435 as described.

[0080] Multiple TRPs 505 (shown as TRP A and TRP B) can communicate with the same UE 120 in a coordinated manner (e.g., using coordinated multipoint transmission) to improve reliability and / or increase throughput. TRPs 505 can coordinate such communications via interfaces between TRPs 505 (e.g., backhaul interfaces and / or access node controllers 410). When TRPs 505 are co-located at the same network node 110 (e.g., when TRPs 505 are different antenna arrays or panels of the same network node 110), the interface can have a smaller delay and / or a higher capacity, and when TRPs 505 are located at different network nodes 110, the interface can have a larger delay and / or a lower capacity (compared to co-location). Different TRPs 505 can communicate with UE 120 using different QCL relationships (e.g., different TCI states), different DMRS ports, and / or different layers (e.g., different layers in multi-layer communications).

[0081] In a first multi-TRP transmission mode (e.g., Mode 1), a single physical downlink control channel (PDCCH) may be used to schedule downlink data communications of a single physical downlink shared channel (PDSCH). In this case, multiple TRPs 505 (e.g., TRP A and TRP B) may transmit communications to UE 120 on the same PDSCH. For example, communications may be transmitted using a single codeword with different spatial layers for different TRPs 505 (e.g., one of the codewords maps to a first set of layers transmitted by a first TRP 505 and maps to a second set of layers transmitted by a second TRP 505). As another example, communications may be transmitted using multiple codewords, with different codewords being transmitted by different TRPs 505 (e.g., using different sets of layers). In either case, different TRPs 505 may use different QCL relationships (e.g., different TCI states) for different DMRS ports corresponding to different layers. For example, the first TRP 505 may use a first QCL relationship or a first TCI state for a first DMRS port set corresponding to a first layer set, and the second TRP 505 may use a second (different) QCL relationship or a second (different) TCI state for a second (different) DMRS port set corresponding to a second (different) layer set. In some aspects, the TCI state in the downlink control information (DCI) (e.g., sent on the PDCCH, such as DCI format 1_0 or DCI format 1_1) may indicate a first QCL relationship (e.g., by indicating a first TCI state) and a second QCL relationship (e.g., by indicating a second TCI state). The first TCI state and the second TCI state may be indicated using a TCI field in the DCI. Typically, in this multi-TRP transmission mode (e.g., mode 1), the TCI field may indicate a single TCI state (for single TRP transmission) or multiple TCI states (for multi-TRP transmission as discussed herein).

[0082] In a second multi-TRP transmission mode (e.g., Mode 2), multiple PDCCHs may be used to schedule downlink data communications for multiple corresponding PDSCHs (e.g., one PDCCH for each PDSCH). In this case, the first PDCCH may schedule a first codeword to be sent by the first TRP 505, and the second PDCCH may schedule a second codeword to be sent by the second TRP 505. In addition, a first DCI (e.g., sent by the first TRP 505) may schedule a first PDSCH communication associated with a first DMRS port set having a first QCL relationship (e.g., indicated by a first TCI state) for use with the first TRP 505, and a second DCI (e.g., sent by the second TRP 505) may schedule a second PDSCH communication associated with a second DMRS port set having a second QCL relationship (e.g., indicated by a second TCI state) for use with the second TRP 505. In this case, the DCI (e.g., having DCI format 1_0 or DCI format 1_1) may indicate a corresponding TCI state corresponding to the DCI for the TRP 505. The TCI field of the DCI indicates the corresponding TCI state (e.g., the TCI field of the first DCI indicates the first TCI state and the TCI field of the second DCI indicates the second TCI state).

[0083] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 The examples described are different.

[0084] Figure 6 1 is a diagram illustrating an example of TRP differentiation at a UE based at least in part on a control resource set (CORESET) pool index according to the present disclosure. In some aspects, a CORESET pool index (or CORESETPoolIndex) value may be used by a UE 120 to identify a TRP associated with an uplink grant received on a PDCCH.

[0085] "CORESET" may refer to a control region that is structured to support efficient use of resources, such as through flexible configuration or reconfiguration of resources for one or more PDCCHs associated with a UE. In some aspects, a CORESET may occupy the first symbol of an orthogonal frequency division multiplexing (OFDM) slot, the first two symbols of an OFDM slot, or the first three symbols of an OFDM slot. Thus, a CORESET may include multiple resource blocks (RBs) in the frequency domain, and one, two, or three symbols in the time domain. In 5G, the number of resources included in a CORESET may be flexibly configured, such as by using RRC signaling to indicate the frequency domain region (e.g., the number of resource blocks) or the time domain region (e.g., the number of symbols) of the CORESET.

[0086] like Figure 6 As illustrated, UE 120 may be configured with multiple CORESETs in a given serving cell. Each CORESET configured for UE 120 may be associated with a CORESET identifier (CORESET ID). For example, a first CORESET configured for UE 120 may be associated with CORESET ID 1, a second CORESET configured for UE 120 may be associated with CORESET ID 2, a third CORESET configured for UE 120 may be associated with CORESET ID 3, and a fourth CORESET configured for UE 120 may be associated with CORESET ID 4.

[0087] like Figure 6 As further illustrated in , two or more (e.g., up to five) CORESETs may be grouped into CORESET pools. Each CORESET pool may be associated with a CORESET pool index. As an example, CORESET ID 1 and CORESET ID 2 may be grouped into CORESET pool index 0, and CORESET ID 3 and CORESET ID 4 may be grouped into CORESET pool index 1. In a multi-TRP configuration, each CORESET pool index value may be associated with a particular TRP 605. As an example, Figure 6 As illustrated, the first TRP 605 (TRP A) may be associated with CORESET pool index 0, and the second TRP 605 (TRP B) may be associated with CORESET pool index 1. The UE 120 may be configured with information identifying an association between a TRP and a CORESET pool index value assigned to the TRP via a higher layer parameter such as PDCCH-Config. Thus, the UE may identify the TRP that sent the DCI uplink grant by determining the CORESET ID of the CORESET in which the PDCCH carrying the DCI uplink grant was sent, determining the CORESET pool index value associated with the CORESET pool in which the CORESET ID is included, and identifying the TRP associated with the CORESET pool index value.

[0088] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 The examples described are different.

[0089] Figure 7is a diagram illustrating an example 700 of downlink transmission and uplink transmission between a network node 110 and a UE 120 in a wireless network 100 according to the present disclosure. In some examples, the downlink and / or uplink transmission is based at least in part on a timing advance and / or a protection period between communications. As an example, the network node 110 may configure the downlink transmission to end before the guard period begins. As another example, the UE 120 may advance the start time of the uplink transmission based at least in part on the timing advance.

[0090] As shown by reference numeral 702-1, network node 110 may start downlink transmission 704-1 to UE 120 at a first point in time. In some examples, the first point in time may be based at least in part on a timing scheme defined by a telecommunications system and / or a telecommunications standard. For illustration, a telecommunications standard may define various time divisions for scheduling transmissions between devices. As an example, a timing scheme may define radio frames (sometimes referred to as frames), where each radio frame has a predetermined duration (e.g., 10 milliseconds (msec)). Each radio frame may be further divided into a group of Z (Z ≥ 1) subframes, where each subframe may have a predetermined duration (e.g., 1 msec). Each subframe may be further divided into a group of time slots and / or each time slot may include a group of L symbol periods (e.g., fourteen symbol periods, seven symbol periods, or another number of symbol periods). Therefore, the first point in time shown by reference numeral 702-1 may be based at least in part on a time division (e.g., frame, subframe, time slot, mini-time slot, and / or symbol) as defined by a telecommunications system.

[0091] In some examples, the network node 110 and the UE 120 may communicate wirelessly with each other (e.g., directly or via one or more network nodes) based at least in part on the defined time division. However, each device may have a different timing reference for the time division. For illustration, and as shown by reference numeral 702-1, the network node 110 may start a downlink transmission 704-1 at a specific time point, which may be associated with the defined time division based at least in part on the time angle of the network node 110. For example, the network node 110 may associate the specific time point with the defined time division (such as the start of a symbol, the start of a time slot, the start of a subframe, and / or the start of a frame). However, the downlink transmission may cause a propagation delay 706 in time, such as a time delay of the downlink transmission traveling between the network node 110 (e.g., RU, TRP, etc.) and the UE 120. As shown by reference numeral 702-2, UE 120 may receive downlink transmission 704-2 (corresponding to downlink transmission 704-1 transmitted by network node 110) at a second point in time that is later in time relative to the first point in time. However, from the time perspective of UE 120, UE 120 may associate the second physical point in time shown by reference numeral 702-2 with a specific point in time of the same defined time partition as network node 110 (e.g., the start of the same symbol, the start of the same mini-slot, the start of the same slot, the start of the same subframe, and / or the start of the same frame). Therefore, as shown in example 700, the time angle of UE 120 may be delayed in time from the time angle of network node 110.

[0092] In wireless communication technologies such as 4G / LTE and 5G / NR, a timing advance (TA) value is used to control the timing of uplink transmissions by a UE 120 such that the uplink transmissions are received by a network node 110 (e.g., RU, TRP, etc.) at a time that is aligned with the internal timing of the network node 110. The network node 110 may determine the TA value to the UE 120 (e.g., directly or via one or more network nodes) by measuring the time difference between receiving the uplink transmission from the UE 120 and the subframe timing used by the network node 110 (e.g., by determining the difference between the time when the network node 110 should have received the uplink transmission according to the subframe timing and the time when the uplink transmission was actually received). The network node 110 may send a TA command (TAC) to instruct the UE 120 to send future uplink communications earlier or later to reduce or eliminate the time difference and align the timing between the UE 120 and the network node 110. TAC is used to offset the timing difference between UE 120 and network node 110 due to different propagation delays that occur when UE 120 is at different distances from network node 110. If TAC is not used, uplink transmissions from different UEs 120 (e.g., located at different distances from network node 110) may collide due to mistiming even if the uplink transmissions are scheduled for different subframes.

[0093] For illustration, without adjusting the start time of the uplink transmission, the UE 120 may be configured to start the uplink transmission at the scheduled time point based at least in part on the defined time division as described elsewhere herein. As shown by reference numeral 710-1, the start of the scheduled time point may occur at a third physical time point based at least in part on the timing angle of the UE 120. However, and as shown by reference numeral 710-2, the scheduled time point with reference to the timing angle of the network node 110 (e.g., RU) may occur at a fourth physical time point that occurs before the third physical time point as shown by reference numeral 710-1. Therefore, the network node 110 may (e.g., directly or via one or more network nodes) instruct the UE 120 to apply the timing advance 708 to the uplink transmission to better align the reception of the uplink transmission with the timing angle of the network node 110. However, in some examples, the fourth time point shown by reference numeral 710-2 may occur at or near the same physical time point as the third time point shown by reference numeral 710-1, such that the uplink transmission from UE 120 to network node 110 causes propagation delay 706. In such a scenario, network node 110 may instruct UE 120 to apply a timing advance having a time duration corresponding to propagation delay 706.

[0094] As shown in example 700, UE 120 may adjust the start time of uplink transmission 712-1 based at least in part on timing advance 708 and the start of the scheduled time point (e.g., at a third physical time point shown by reference numeral 710-1). Based at least in part on the propagation delay, network node 110 may receive uplink transmission 712-2 (corresponding to uplink transmission 712-1 sent by UE 120) at a fourth physical time point shown by reference numeral 710-2.

[0095] In some examples, the timing advance value may be based at least in part on twice the estimated propagation delay (e.g., propagation delay 706) and / or may be based at least in part on a round trip time (RTT). The network node 110 (e.g., DU or CU) may estimate the propagation delay and / or select the timing advance value based at least in part on communications with the UE 120. As an example, the network node 110 may estimate the propagation delay based at least in part on a network access request message from the UE 120. Additionally or alternatively, the network node 110 may estimate and / or select the timing advance value from a set of fixed timing advance values.

[0096] In some examples, the telecommunications system and / or telecommunications standard may define a protection period 714 (e.g., a duration) between transmissions to provide the device with sufficient time to switch between different transmission and / or reception modes, to perform transient stabilization, to provide margin for timing misalignment between devices, and / or for propagation delays. In some examples, a protection period is a period during which no transmission or reception is scheduled and / or allowed to occur. The protection period may provide the device with sufficient time to reconfigure hardware and / or allow the hardware to stabilize within a threshold to enable subsequent transmissions. The protection period 714 may sometimes be referred to as a gap, a switching protection period, or a guard interval.

[0097] In some examples, the network node 110 (e.g., DU or CU) may select the start transmission time and / or the transmission time duration based at least in part on the receiving device and / or the protection period. For example, the network node 110 may select the amount of content (e.g., data and / or control information) to be sent in the downlink transmission 704-1 based at least in part on starting the transmission at the first time point shown by reference numeral 702-1 and / or the UE 120 completing the reception of the downlink transmission 704-2 before the start point of the protection period 714. Alternatively or additionally, the UE 120 may select the amount of content (e.g., data and / or control information) to be sent in the uplink transmission 712-1 based at least in part on the timing advance 708, the third time point shown by reference numeral 710-1, and / or avoiding starting the uplink transmission 712-1 until the protection period 714 has ended.

[0098] In some aspects, UE 120 may be configured with one or more timing advance groups (TAGs). A "TAG" may refer to a group of cells that share the same uplink timing. When UE 120 communicates with multiple TRPs (e.g., TRP 505 and / or TRP 605), the multiple TRPs may be associated with a common TAG for the purpose of the timing advance control process, while in some other aspects, the TRPs may be associated with different TAGs for the purpose of the timing advance control process. More specifically, if the TRPs are close to each other, they may experience similar propagation delays with respect to communications with UE 120. Therefore, two or more TRPs may form part of a single TAG, meaning that these TRPs share the same uplink transmit timing (e.g., they are subject to the same timing advance 708). However, TRPs that are geographically separated or otherwise relatively far from each other may experience different propagation delays with respect to communications with UE 120, and therefore two or more TRPs may be associated with different uplink transmit timings, and therefore associated with different TAGs (e.g., they may be subject to different timing advances 708). In the case where the UE 120 communicates with two or more TRPs (where each TRP is associated with a different timing advance parameter), the UE 120 may therefore receive multiple TACs in order to establish a timing advance 708 for each TAG (e.g., for each TRP).

[0099] In some cases, it may be necessary to update or otherwise adjust the timing advance 708 associated with the UE 120. For example, if the UE 120 moves from one location (e.g., one geographic location) to another location (e.g., a different geographic location), the UE 120 may be farther away from or closer to the network node 110, thereby resulting in different propagation delays 706 associated with communications between the network node 110 and the UE 120. Therefore, the UE 120 may need to adjust the timing advance 708 so that communications between the network node 110 and the UE 120 are synchronized in the manner described above (e.g., so that the uplink transmission 712-1 arrives at the network node 110 at the fourth time point shown by reference numeral 710-2, as described).

[0100] In some examples, UE 120 may autonomously adjust timing advance 708 when moving to a new location (e.g., a new geographic location) based at least in part on a downlink receive timing difference measured between the new location of UE 120 and a previous location of UE 120 (e.g., a location where a previous timing advance 708 was determined and / or a location where UE 120 received one or more TACs that established the previous timing advance 708). For example, UE 120 may autonomously adjust timing advance 708 such that a new timing advance (sometimes referred to as a TA) is less than or equal to 0. new ) is equal to T RX_new –(NTA_new +N TA_offset )×T C , where T RX_new Corresponding to the downlink frame reception timing for the new position; T C Corresponds to the NR physical layer time unit (which is equal to 1 / (480,000×4096) seconds or 0.509 nanoseconds); N TA_offset corresponds to a semi-static timing advance offset value, which may be signaled by the network node 110 via a system information block (SIB) (e.g., SIB1) or via dedicated signaling to the UE 120, or which may otherwise be equal to a default value that may be defined according to a wireless communication specification, such as Technical Specification (TS) 38.133 promulgated by 3GPP; and N TA_new corresponds to the amount of time alignment that UE 120 autonomously adjusts for the new location. In some cases, the amount of time alignment that UE 120 autonomously adjusts for the new location (e.g., N TA_new ) can be equal to N TA_old –2×(T RX_old –T RX_new ), where T RX_old corresponds to the downlink frame reception timing for the old position of UE 120, and N TA_old Corresponding to an amount of time alignment for the old position, which in some cases may have been signaled by the network node 110 via the TAC.

[0101] The above autonomous timing advance adjustment process is based on certain assumptions, such as that the serving cell is associated with only a single timing advance 708 and / or that the downlink propagation delay 706 is the same or similar to the uplink propagation delay. However, when the UE 120 communicates with multiple network nodes 110, such as when the UE 120 communicates with multiple network nodes 110, Figure 5 and Figure 6When communicating with the described multiple TRPs 505, 605, the UE 120 may use multiple timing advances, one timing advance for each TRP (e.g., the UE 120 may be configured with multiple TAGs, as described). For example, if the UE 120 is operating in a multi-DCI multi-TRP cell (e.g., a cell in which the UE 120 is being served by two or more TRPs and / or in which the UE 120 receives multiple scheduled DCI communications (one scheduled DCI communication for each TRP)), the UE 120 may be configured with a first timing advance associated with a first TRP (e.g., associated with a first CORESETPoolIndex (such as CORESETPoolIndex 0) and / or a first TAG), and the UE 120 may be configured with a second timing advance associated with a second TRP (e.g., associated with a second CORESETPoolIndex (such as CORESETPoolIndex 1) and / or a second TAG). In such cases, the above-described autonomous timing advance adjustment process may not be sufficient to update multiple timing advance parameters because the basic assumptions associated with the process (e.g., the basic assumption that the serving cell is associated with only a single timing advance 708 and / or that the downlink propagation delay 706 is the same or similar to the uplink propagation delay) may not be applicable to the multi-DCI multi-TRP cell scenario.

[0102] For example, in a multi-DCI multi-TRP cell, a first reference signal subset (e.g., a first synchronization signal block (SSB) subset) associated with the multi-DCI multi-TRP cell for performing measurements associated with the autonomous timing advance adjustment process may be associated with a first TRP, and a second reference signal subset (e.g., a second SSB subset) associated with the multi-DCI multi-TRP cell for performing measurements associated with the autonomous timing advance adjustment process may be associated with a second TRP. In such a case, when performing the above-mentioned autonomous timing advance adjustment process, the UE 120 may synchronize to the strongest and / or earliest received SSB, which will be from the first SSB subset or the second SSB subset. That is, the UE 120 will use the strongest and / or earliest received SSB to determine the downlink frame reception time for the autonomous timing advance adjustment of two TRPs (e.g., for both the TRP associated with the SSB and the TRP not associated with the SSB). Therefore, in the case where the downlink reception timing of the first TRP is significantly different from the second TRP, the timing advance of at least one of the TRPs will be incorrect for at least one of the TRPs following the autonomous timing advance adjustment procedure. This may result in unsynchronized communications, resulting in high error rates and therefore high latency; low throughput; high computational, power or network resource consumption associated with the error correction process; inefficient use of network resources; and in some cases, radio link failures.

[0103] Some techniques and apparatus described herein implement a per-TRP autonomous timing advance adjustment process. In some aspects, after changing position (e.g., after moving from a first geographic location to a second geographic location) or when communications otherwise become unsynchronized, the UE 120 may determine the downlink receive timing of each of the multiple TRPs in the multi-DCI multi-TRP cell. The UE 120 may do so by measuring a first reference signal associated with a first TRP and / or a first TRP identifier for the purpose of determining the downlink receive timing associated with the first TRP and by measuring a second reference signal associated with a second TRP and / or a second TRP identifier for the purpose of determining the downlink receive timing associated with the second TRP. The UE 120 may adjust the timing advance associated with each TRP based at least in part on the corresponding downlink receive timing determined by the UE 120 in the new location. Thus, after the position of the UE 120 changes, multiple timing advances associated with multiple TRPs may be autonomously updated based at least in part on the corresponding downlink receive timing associated with each TRP, resulting in synchronized communications between the UE 120 and the TRPs. As a result, UE 120 and TRP may experience lower error rates and reduced latency; increased throughput; lower computational, power, or network resource consumption associated with error correction processes; more efficient use of network resources; and an overall more reliable communication channel.

[0104] As indicated above, Figure 7 are provided as examples. Other examples can be found in the Figure 7 The examples described are different.

[0105] Figure 8 8 is a diagram of an example 800 associated with autonomous timing advance adjustment for multiple transmission reception points according to the present disclosure. Figure 8 As shown, first network node 110-1 (e.g., a first TRP, such as one of TRPs 505 and / or 605) and second network node 110-2 (e.g., a second TRP, such as one of TRPs 505 and / or 605) may communicate with UE 120. In some aspects, first network node 110-1, second network node 110-2, and UE 120 may be part of a wireless network (e.g., wireless network 100). UE 120, first network node 110-1, and second network node 110-2 may be in communication with each other. Figure 8 The operations shown in and have previously established a wireless connection. For example, the first network node 110-1 and the second network node 110-2 may be TRPs associated with a multi-DCI multi-TRP cell, and the UE 120 may have established a connection to each TRP of the multi-DCI multi-TRP cell.

[0106] As indicated by reference numeral 805, first network node 110-1 and / or second network node 110-2 may send configuration information, and UE 120 may receive the configuration information. In some aspects, UE 120 may receive the configuration information via one or more of RRC signaling, one or more MAC control elements (MAC-CEs), and / or DCI, etc. In some aspects, the configuration information may include an indication of one or more configuration parameters for UE 120 to select (e.g., already known to UE 120 and / or previously indicated by first network node 110-1, second network node 110-2, or other network devices), and / or explicit configuration information for UE 120 to use to configure UE 120, etc.

[0107] In some aspects, as described, the first network node 110-1 may be a first TRP associated with a multi-DCI multi-TRP cell, and the second network node 110-2 may be a second TRP associated with a multi-DCI multi-TRP cell. In such aspects, the UE 120 may be configured with multiple CORESETs and / or multiple CORESET pool indexes, as described above in conjunction with Figure 6 As described. More specifically, UE 120 may be configured with a first CORESET pool index (e.g., CORESET pool index 0) associated with first network node 110-1, and / or UE 120 may be configured with a second CORESET pool index (e.g., CORESET pool index 1) associated with second network node 110-2. In some aspects, UE 120 may be configured with multiple TAGs. For example, UE 120 may be configured with a first TAG associated with first network node 110-1 and / or a first CORESET pool index, and / or UE 120 may be configured with a second TAG associated with second network node 110-2 and / or a second CORESET pool index.

[0108] Additionally or alternatively, UE 120 may be configured with multiple reference signal configurations. For example, UE 120 may be configured with a first reference signal configuration associated with first network node 110-1, and UE 120 may be configured with a second reference signal configuration associated with second network node 110-2. Multiple reference signal configurations may indicate time resources and / or frequency resources for receiving one or more reference signals associated with first network node 110-1 and / or second network node 110-2. For example, multiple reference signal configurations may be configured for receiving time resources and / or frequency resources for one or more SBSs, positioning reference signals (PRBs), channel state information (CSI) reference signals (CSI-RS), etc. from each of first network node 110-1 and second network node 110-2. In some aspects, one or more SSBs, PRBs, or CSI-RSs may be used to perform measurements associated with a multi-TRP autonomous timing advance adjustment process, as described in more detail below in conjunction with reference numeral 835.

[0109] UE 120 may configure itself based at least in part on the configuration information.In some aspects, UE 120 may be configured to perform one or more operations described herein based at least in part on the configuration information.

[0110] As shown by reference numerals 810 and 815, the first network node 110-1 and / or the second network node 110-2 may send one or more TACs (such as in conjunction with Figure 7 1, 1 10-2, and the UE 120 may receive one or more TACs. In this regard, the one or more TACs may instruct the UE 120 to send future uplink communications earlier or later to reduce or eliminate time differences and align timing between the UE 120 and the respective network nodes 110-1, 110-2. In some aspects, the UE 120 may receive two TACs, one TAC associated with the first network node 110-1, the first CORESET pool index, and / or the first TAG, and the other TAC associated with the second network node 110-2, the second CORESET pool index, and / or the second TAG.

[0111] As indicated by reference numeral 820, UE 120 may synchronize timing associated with first network node 110-1 and / or second network node 110-2. For example, based at least in part on the TAC described in conjunction with reference numerals 810 and 815, UE 120 may determine and / or apply a first timing advance (e.g., first timing advance 708) associated with uplink communications sent to first network node 110-1, and / or may determine and / or apply a second timing advance (e.g., second timing advance 708) associated with uplink communications sent to second network node 110-2, as described above in conjunction with Figure 7 as described.

[0112] In some aspects, UE 120 may need to adjust and / or update the timing advance associated with first network node 110-1 and / or the timing advance associated with second network node 110-2 later based at least in part on the timing between UE 120 and first network node 110-1 and / or the timing between UE 120 and second network node 110-2 becoming unsynchronized. For example, if UE 120 changes location (e.g., if the UE changes geographic location), UE 120 may become farther away from or closer to first network node 110 and / or second network node 110-2, resulting in a propagation delay between UE 120 and first network node 110 and / or second network node 110-2 that is different from the propagation delay that existed when UE 120 received the TAC from first network node 110-1 and second network node 110-2. Therefore, the UE 120 may need to adjust the timing advance associated with one or both network nodes 110-1, 110-2 in order to synchronize transmissions between the UE 120 and the network nodes 110-1, 110-2.

[0113] In this regard, and as indicated by reference numerals 825 and 830, UE 120 may receive one or more reference signals, and first network node 110-1 and second network node 110-2 may transmit one or more reference signals. For example, UE 120 may receive one or more SSBs, PRBs, CSI-RSs, etc. from each of first network node 110-1 and second network node 110-2, according to the configuration information described in conjunction with reference numeral 805. In some aspects, UE 120 may receive multiple reference signals from one or both of network nodes 110-1, 110-2. For example, UE 120 may receive a first reference signal set, and first network node 110-1 may transmit the first reference signal set, and / or UE 120 may receive a second reference signal set, and second network node 110-2 may transmit the second reference signal set. In some aspects, when UE 120 receives multiple reference signals from network nodes 110-1, 110-2, UE 120 may use the strongest reference signal in the reference signal set and / or use the earliest arriving reference signal in the reference signal set to perform measurements (e.g., determine downlink timing associated with network nodes 110-1, 110-2, as described in more detail below). More specifically, UE 120 may use the strongest reference signal in the first reference signal set or the reference signal of the earliest arriving path in the first reference signal set to determine the downlink timing associated with first network node 110-1, and / or UE 120 may use the strongest reference signal in the second reference signal set or the reference signal of the earliest arriving path in the second reference signal set to determine the downlink timing associated with second network node 110-2.

[0114] In some aspects, each reference signal may be associated with an identifier (sometimes referred to as a TRP identifier) ​​that indicates the corresponding network node 110-1, 110-2 from which the reference signal originated and / or that should autonomously adjust its timing advance parameter based on measurements of the reference signal. More specifically, one or more reference signals received from the first network node 110-1 (as shown by reference numeral 825) may be associated with a first identifier that indicates that the reference signal is associated with the first network node 110-1, and / or one or more reference signals received from the second network node 110-2 (as shown by reference numeral 830) may be associated with a second identifier that indicates that the reference signal is associated with the second network node 110-2. In some aspects, the first identifier (e.g., the first TRP identifier) ​​and / or the second identifier (e.g., the second TRP identifier) ​​may be a CORESET pool index, a physical channel identifier (PCI), or a sounding reference signal (SRS) set identifier associated with the corresponding network node 110-1, 110-2. In some other aspects, the first identifier and / or the second identifier may be an identifier uniquely assigned and / or indicated for the purpose of the autonomous timing advance adjustment process (sometimes referred to as a timing advance adjustment identifier). For example, the timing advance adjustment identifier may be used to indicate a specific TRP associated with one or more reference signals (sometimes referred to as a TRP-specific identifier), a specific panel associated with one or more reference signals (sometimes referred to as a panel identifier), a specific beam group associated with one or more reference signals (sometimes referred to as a beam group indicator), etc.

[0115] In some aspects, UE 120 may receive an indication to associate one or more reference signals with first network node 110-1 and one or more other reference signals with second network node 110-2, and one or more of first network node 110-1 or second network node 110-2 may send the indication. In other words, UE 120 may receive an indication to associate a first reference signal set with a first identifier (e.g., a CORESET pool index, PCI, SRS set identifier, timing advance adjustment identifier, TRP specific identifier, panel identifier, beam group indicator, etc. associated with first network node 110-1) and associate a second reference signal set with a second identifier (e.g., a CORESET pool index, PCI, SRS set identifier, timing advance adjustment identifier, TRP specific identifier, panel identifier, beam group indicator, etc. associated with second network node 110-2), and one or more of first network node 110-1 or second network node 110-2 may send the indication. For example, UE 120 may receive an indication associating a first reference signal set with a first identifier and / or first network node 110-1 and associating a second reference signal set with a second identifier and / or second network node 110-2 via one of RRC communication, MAC-CE communication, or DCI communication.

[0116] In some aspects, the indication associating the first reference signal set with the first identifier and / or the first network node 110-1 and the indication associating the second reference signal set with the second identifier and / or the second network node 110-2 may be a bitmap, such as a bitmap mapping one or more reference signals to the first identifier and one or more other reference signals to the second identifier. Additionally or alternatively, the indication associating the first reference signal set with the first identifier and / or the first network node 110-1 and the indication associating the second reference signal set with the second identifier and / or the second network node 110-2 may be included in or otherwise associated with a configuration of reference signals, as described above in connection with reference numeral 805. For example, a first reference signal configuration associated with the first reference signal set may include an indication associating the first reference signal set with the first identifier and / or the first network node 110-1, and a second reference signal configuration associated with the second reference signal set may include an indication associating the second reference signal set with the second identifier and / or the second network node 110-2.

[0117] In some aspects, one or both of network nodes 110-1, 110-2 may configure UE 120 with a reference signal group associated with each network node 110-1, 110-2 (e.g., via configuration information described in conjunction with reference numeral 805). That is, UE 120 may receive a first reference signal group configuration that associates a first set of reference signals with a first identifier and / or first network node 110-1, and / or UE 120 may receive a second reference signal group configuration that associates a second set of reference signals with a second identifier and / or second network node 110-2. For example, the first group configuration may indicate that a first SSB subset (e.g., SSB 0 to SSB 9) is associated with first network node 110-1, and the second group configuration may indicate that a second SSB subset (e.g., SSB 10 to SSB 19) is associated with first network node 110-1. Thus, when UE 120 receives one or more SSBs associated with index 0 to index 9, UE 120 may use the one or more SSBs for the purpose of adjusting the timing advance associated with the first network node 110-1, and when UE 120 receives one or more SSBs associated with index 10 to index 19, UE 120 may use the one or more SSBs for the purpose of adjusting the timing advance associated with the second network node 110-2.

[0118] In some aspects, the UE 120 may perform one or more network node specific measurements using the reference signals described in conjunction with reference numerals 825 and 830. For example, the UE 120 may measure the one or more reference signals to determine the downlink reception timing associated with each network node 110-1, 110-2 in the new location of the UE 120. In other words, the UE 120 may measure a downlink reception time (e.g., a time from when the reference signal is transmitted by the first network node 110-1 to when the reference signal is received by the UE 120, which may be associated with the propagation delay 706) using one or more reference signals transmitted by the first network node 110-1 (e.g., by using the strongest reference signal and / or the earliest arriving reference signal associated with the first network node 110-1), and the UE 120 may measure another downlink reception time using one or more reference signals transmitted by the second network node 110-2 (e.g., by using the strongest reference signal and / or the earliest arriving reference signal associated with the second network node 110-2).

[0119] As indicated by reference numeral 835, UE 120 may perform an autonomous (e.g., not requiring TAC from network nodes 110-1, 110-2) timing advance adjustment procedure associated with first network node 110-1 and second network node 110-2, sometimes referred to herein as a multi-network node autonomous timing advance adjustment procedure or a multi-TRP autonomous timing advance adjustment procedure. More specifically, UE 120 may perform the autonomous timing advance adjustment procedure by autonomously adjusting a first timing advance associated with first network node 110 based at least in part on measurements associated with one or more reference signals received from first network node 110-1 and autonomously adjusting a second timing advance associated with second network node 110-2 based at least in part on measurements associated with one or more reference signals received from second network node 110-2.

[0120] In some aspects, UE 120 may autonomously adjust each timing advance per network node 110-1, 110-2 based at least in part on at least one of: a new downlink reception timing (e.g., T ) associated with the corresponding network node 110-1, 110-2 (e.g., associated with a new or current position of UE 120 after a change of position); RX_new ); physical layer time constants (e.g., T C ); Timing advance offset value (e.g., N TA_offset ), which may have been previously signaled to the UE 120 via corresponding RRC signaling or TAC, as described in conjunction with reference numerals 810 and 815; a new time alignment amount (e.g., N) associated with the corresponding network nodes 110-1, 110-2 TA_new ), an old (eg, associated with an old or previous position of the UE 120 before the position was moved) time alignment quantity (eg, N TA_old ), which may have been previously signaled to the UE 120 via the corresponding TAC, as described in conjunction with reference numerals 810 and 815; or an old downlink reception timing associated with the corresponding network node 110-1, 110-2 (e.g., T RX_old ). For example, UE 120 may calculate TA according to the equation new =T RX_new –(N TA_new +N TA_offset )×T C to adjust each timing advance (eg, the timing advance associated with the first network node 110-1 and the timing advance associated with the second network node 110-2), where T RX_newa downlink frame reception timing corresponding to the new position for the corresponding network node 110-1, 110-2 (eg, determined using a reference signal associated with the corresponding network node 110-1, 110-2); T C Corresponds to the NR physical layer time unit (which is equal to 1 / (480,000×4096) seconds or 0.509 nanoseconds); N TA_offset corresponds to a semi-static timing advance offset value, which may be signaled by the network nodes 110-1, 110-2 via a SIB (e.g., SIB1) or via dedicated signaling to the UE 120, or which may otherwise be equal to a default value that may be defined according to a wireless communication specification (such as TS 38.133 issued by 3GPP); and N TA_new corresponds to the amount of time alignment that UE 120 autonomously adjusts for the new location. In some aspects, the amount of time alignment that UE 120 autonomously adjusts for the new location (e.g., N TA_new ) can be equal to N TA_old –2×(T RX_old –T RX_new ), where T RX_old corresponds to the downlink frame reception timing for the old position of UE 120, and N TA_old The time alignment amount corresponds to the time alignment amount for the old position, which may have been signaled by the network nodes 110 - 1 , 110 - 2 via the corresponding TAC described in conjunction with reference numerals 810 and 815 .

[0121] In some aspects, the autonomous timing advance adjustment process described above may be summarized as follows: For a serving cell with two CORESET pool indices and two timing advances, if the received downlink timing associated with a CORESET pool index changes and is not compensated or only partially compensated by an uplink timing adjustment in the absence of a timing advance command for the same CORESET pool index as described in TS 38.133 published by 3GPP, the UE changes the N associated with the same CORESET pool index accordingly. TA .

[0122] As shown by reference numerals 840 and 845, UE 120 may communicate with first network node 110-1 and / or second network node 1110-2 based at least in part on an autonomous timing advance adjustment procedure. More specifically, as shown by reference numeral 840, UE 120 may send a first communication and first network node 110-1 may receive the first communication, wherein the timing of the first communication is based at least in part on a multi-TRP autonomous timing advance adjustment procedure performed by UE 120 (e.g., wherein the timing of the first communication is associated with a first autonomously adjusted timing advance parameter, as described in conjunction with reference numeral 835). Additionally or alternatively, as shown by reference numeral 845, UE 120 may send a second communication and second network node 110-2 may receive the second communication, wherein the timing of the second communication is similarly based at least in part on a multi-TRP autonomous timing advance adjustment procedure performed by UE 120 (e.g., wherein the timing of the second communication is associated with a second autonomously adjusted timing advance parameter, as described in conjunction with reference numeral 835).

[0123] Based at least in part on UE 120 performing the above-mentioned multi-TRP autonomous timing advance adjustment process, UE 120 and / or network nodes 110-1, 110-2 can save computing, power, network and / or communication resources that might otherwise be consumed by using a conventional autonomous timing advance adjustment process. For example, based at least in part on UE 120 performing the multi-TRP autonomous timing advance adjustment process, UE 120 can more accurately synchronize the timing of multiple network nodes 110-1, 110-2, thereby causing UE 120 and network nodes 110-1, 110-2 to communicate with improved synchronization and therefore with a reduced error rate, which can save computing, power, network and / or communication resources that might otherwise be consumed for detecting and / or correcting communication errors and / or reestablishing a connection after a radio link failure, etc.

[0124] As indicated above, Figure 8 are provided as examples. Other examples can be found in the Figure 8 The examples described are different.

[0125] Fig. 9 9 is a diagram illustrating an example process 900 performed, for example, by a UE in accordance with the present disclosure. Example process 900 is an example of a UE (eg, UE 120) performing operations associated with autonomous timing advance adjustment for multiple TRPs.

[0126] like Fig. 9 As shown, in some aspects, process 900 may include receiving a first reference signal from a first TRP (block 910). For example, a UE (e.g., using Fig.11The communication manager 140 and / or receiving component 1102 depicted in the figure may receive a first reference signal from a first TRP, as described above.

[0127] like Fig. 9 As further shown, in some aspects, process 900 may include receiving a second reference signal from a second TRP (block 920). Fig.11 The communication manager 140 and / or receiving component 1102 depicted in the figure may receive a second reference signal from a second TRP, as described above.

[0128] like Fig. 9 As further shown, in some aspects, process 900 may include performing an autonomous timing advance adjustment procedure by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal (block 930). Fig.11 The communication manager 140 and / or execution component 1108 depicted in the figure can perform an autonomous timing advance adjustment process by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal, as described above.

[0129] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0130] In a first aspect, the measurement associated with the first reference signal is associated with a first downlink receive timing associated with the first TRP and the measurement associated with the second reference signal is associated with a second downlink receive timing associated with the second TRP.

[0131] In a second aspect, either alone or in combination with the first aspect, for each of the first TRP and the second TRP, a corresponding timing advance parameter is autonomously adjusted based at least in part on at least one of: a new downlink receive timing associated with the corresponding TRP; a physical layer time constant; a timing advance offset value; a new time alignment amount associated with the corresponding TRP; an old time alignment amount associated with the corresponding TRP; or an old downlink receive timing associated with the corresponding TRP.

[0132] In a third aspect, alone or in combination with one or more of the first and second aspects, process 900 includes: receiving a first reference signal set from the first TRP, wherein the first reference signal is the strongest reference signal in the first reference signal set or one of the earliest arriving reference signals in the first reference signal set; and receiving a second reference signal set from the second TRP, wherein the second reference signal is the strongest reference signal in the second reference signal set or one of the earliest arriving reference signals in the second reference signal set.

[0133] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, at least one of the first reference signal or the second reference signal is one of a synchronization signal block, a channel state information reference signal, or a positioning reference signal.

[0134] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the first reference signal is associated with a first TRP identifier associated with the first TRP, and the second reference signal is associated with a second TRP identifier associated with the second TRP.

[0135] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, at least one of the first TRP identifier or the second TRP identifier is associated with one of a control resource set pool index, a physical channel identifier, or a sounding reference signal set identifier.

[0136] In a seventh aspect, either alone or in combination with one or more of aspects 1 to 6, process 900 includes receiving an indication to associate the first reference signal with the first TRP identifier and to associate the second reference signal with the second TRP identifier.

[0137] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the indication of associating the first reference signal with the first TRP identifier and associating the second reference signal with the second TRP identifier is received via one of a radio resource control communication, a MAC-CE communication, or a downlink control information message.

[0138] In the ninth aspect, alone or in combination with one or more of the first to eighth aspects, the indication of associating the first reference signal with the first TRP identifier and the second reference signal with the second TRP identifier is associated with a bitmap that maps the first reference signal to the first TRP identifier and the second reference signal to the second TRP identifier.

[0139] In the tenth aspect, alone or in combination with one or more of the first to ninth aspects, the indication associating the first reference signal with the first TRP identifier is associated with a first reference signal configuration associated with the first reference signal, and the indication associating the second reference signal with the second TRP identifier is associated with a second reference signal configuration associated with the second reference signal.

[0140] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 900 includes: receiving a first reference signal group configuration associated with the first reference signal, wherein the indication associating the first reference signal with the first TRP identifier is associated with the first reference signal group configuration; and receiving a second reference signal group configuration associated with the second reference signal, wherein the indication associating the second reference signal with the second TRP identifier is associated with the second reference signal group configuration.

[0141] although Fig. 9 An example block diagram of process 900 is shown, but in some aspects, process 900 may include Fig. 9 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 900. Additionally or alternatively, two or more of the blocks in the process 900 may be performed in parallel.

[0142] Fig.10 is a diagram illustrating an example process 1000 performed, for example, by a network node in accordance with the present disclosure. The example process 1000 is an example of a network node (eg, network node 110) performing operations associated with autonomous timing advance adjustment for multiple TRPs.

[0143] like Fig.10 As shown, in some aspects, process 1000 may include sending a reference signal configuration associated with a TRP to a UE (e.g., UE 120) (block 1010). For example, a network node (e.g., using Fig.12 The communication manager 150 and / or sending component 1204 depicted in the figure may send a reference signal configuration associated with the TRP to the UE, as described above.

[0144] like Fig.10 As further shown, in some aspects, process 1000 may include sending a reference signal to the UE based at least in part on the reference signal configuration (block 1020). Fig.12 The communication manager 150 and / or the sending component 1204 depicted in FIG. 1 may send a reference signal to the UE based at least in part on the reference signal configuration, as described above.

[0145] like Fig.10As further shown, in some aspects, process 1000 may include receiving a communication from the UE, wherein the timing of the communication is based at least in part on a multi-TRP autonomous timing advance adjustment procedure performed by the UE (block 1030). Fig.12 The communication manager 150 and / or receiving component 1202 depicted in the figure may receive communications from the UE, wherein the timing of the communications is based at least in part on a multi-TRP autonomous timing advance adjustment process performed by the UE, as described above.

[0146] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0147] In a first aspect, the multi-TRP autonomous timing advance adjustment process is associated with a downlink reception timing associated with the TRP and is associated with another downlink reception timing associated with another TRP.

[0148] In a second aspect, either alone or in combination with the first aspect, the multi-TRP autonomous timing advance adjustment process is based at least in part on at least one of: a new downlink receive timing associated with the TRP; a physical layer time constant; a timing advance offset value; a new time alignment amount associated with the TRP; an old time alignment amount associated with the TRP; or an old downlink receive timing associated with the TRP.

[0149] In a third aspect, alone or in combination with one or more of the first and second aspects, process 1000 includes: sending a reference signal set to the UE, wherein the UE uses the strongest reference signal in the reference signal set or one of the earliest arriving reference signals in the reference signal set for the multi-TRP autonomous timing advance adjustment process.

[0150] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the reference signal is one of a synchronization signal block, a channel state information reference signal, or a positioning reference signal.

[0151] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the reference signal is associated with a TRP identifier associated with the TRP.

[0152] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the TRP identifier is associated with one of a control resource set pool index, a physical channel identifier, or a sounding reference signal set identifier.

[0153] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 1000 includes sending an indication to the UE associating the reference signal with the TRP identifier.

[0154] In an eighth aspect, either alone or in combination with one or more of aspects one to seven, the indication associating the reference signal with the TRP identifier is sent via one of a radio resource control communication, a MAC-CE communication or a downlink control information message.

[0155] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the indication associating the reference signal with the TRP identifier is associated with a bitmap mapping the reference signal to the TRP.

[0156] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the indication associating the reference signal with the TRP identifier is sent in a communication including the reference signal configuration.

[0157] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 1000 includes: sending a reference signal group configuration associated with the reference signal to the UE, wherein the indication associating the reference signal with the TRP identifier is associated with the reference signal group configuration.

[0158] although Fig.10 An example block diagram of process 1000 is shown, but in some aspects, process 1000 may include Fig.10 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1000. Additionally or alternatively, two or more of the blocks in the process 1000 may be performed in parallel.

[0159] Fig.11 1 is a diagram of an example apparatus 1100 for wireless communication according to the present disclosure. Apparatus 1100 may be a UE (e.g., UE 120), or a UE may include apparatus 1100. In some aspects, apparatus 1100 includes a receiving component 1102 and a sending component 1104 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1100 may communicate with another apparatus 1106 (such as UE 120, network node 110, or another wireless communication device) using receiving component 1102 and sending component 1104. As further shown, apparatus 1100 may include a communication manager 140. Communication manager 140 may include execution component 1108, etc.

[0160] In some aspects, the apparatus 1100 may be configured to perform Figure 8 Additionally or alternatively, the apparatus 1100 may be configured to perform one or more processes described herein, such as Fig. 9 The process 900. In some aspects, Fig.11 The apparatus 1100 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 One or more components of the described UE 120. Additionally or alternatively, Fig.11 One or more of the components shown in the figure may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0161] The receiving component 1102 may receive communications from the device 1106, such as reference signals, control information, data communications, or combinations thereof. The receiving component 1102 may provide the received communications to one or more other components of the device 1100. In some aspects, the receiving component 1102 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 1100. In some aspects, the receiving component 1102 may include combining Figure 2 The UE 120 is described as having one or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof.

[0162] The transmitting component 1104 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1106. In some aspects, one or more other components of the device 1100 may generate communications and may provide the generated communications to the transmitting component 1104 for transmission to the device 1106. In some aspects, the transmitting component 1104 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1106. In some aspects, the transmitting component 1104 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof of the depicted UE 120. In some aspects, the transmit component 1104 can be co-located with the receive component 1102 in a transceiver.

[0163] The receiving component 1102 can receive a first reference signal from a first TRP. The receiving component 1102 can receive a second reference signal from a second TRP. The executing component 1108 can perform an autonomous timing advance adjustment procedure by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal.

[0164] The receiving component 1102 can receive a first reference signal set from the first TRP, wherein the first reference signal is one of the strongest reference signal in the first reference signal set or the earliest arriving reference signal in the first reference signal set.

[0165] The receiving component 1102 can receive a second reference signal set from the second TRP, wherein the second reference signal is one of the strongest reference signal in the second reference signal set or the earliest arriving reference signal in the second reference signal set.

[0166] The receiving component 1102 may receive an indication to associate the first reference signal with the first TRP identifier and to associate the second reference signal with the second TRP identifier.

[0167] The receiving component 1102 may receive a first reference signal group configuration associated with the first reference signal, wherein the indication associating the first reference signal with the first TRP identifier is associated with the first reference signal group configuration.

[0168] The receiving component 1102 may receive a second reference signal group configuration associated with the second reference signal, wherein the indication associating the second reference signal with the second TRP identifier is associated with the second reference signal group configuration.

[0169] Fig.11 The number and arrangement of components shown in the figure are provided as examples. In practice, there may be Fig.11 The components shown in the figure may include additional components, fewer components, different components, or components arranged in a different manner. Fig.11 Two or more components shown in may be implemented in a single component, or Fig.11 The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Fig.11 The assembly of (one or more) components shown in the executable is described as being composed of Fig.11 One or more functions performed by another component collection shown in .

[0170] Fig.121 is a diagram of an example apparatus 1200 for wireless communication according to the present disclosure. Apparatus 1200 may be a network node (e.g., network node 110), or a network node may include apparatus 1200. In some aspects, apparatus 1200 includes a receiving component 1202 and a sending component 1204 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1200 may communicate with another apparatus 1206 (such as UE 120, network node 110, or another wireless communication device) using receiving component 1202 and sending component 1204. As further shown, apparatus 1200 may include a communication manager 150. Communication manager 150 may include configuration component 1208, among other things.

[0171] In some aspects, the apparatus 1200 may be configured to perform Figure 8 Additionally or alternatively, the apparatus 1200 may be configured to perform one or more of the processes described herein, such as Fig.10 The process 1000. In some aspects, Fig.12 The apparatus 1200 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 One or more components of the described network node 110. Additionally or alternatively, Fig.12 One or more of the components shown in the figure may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0172] The receiving component 1202 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1206. The receiving component 1202 may provide the received communications to one or more other components of the device 1200. In some aspects, the receiving component 1202 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 1200. In some aspects, the receiving component 1202 may include combining Figure 2 The network node 110 may be described as having one or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof.

[0173] The transmitting component 1204 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1206. In some aspects, one or more other components of the device 1200 may generate communications and may provide the generated communications to the transmitting component 1204 for transmission to the device 1206. In some aspects, the transmitting component 1204 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1206. In some aspects, the transmitting component 1204 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the depicted network node 110. In some aspects, the transmit component 1204 can be co-located with the receive component 1202 in a transceiver.

[0174] Transmitting component 1204 and / or configuring component 1208 can transmit a reference signal configuration associated with a TRP to a UE. Transmitting component 1204 can transmit a reference signal to the UE based at least in part on the reference signal configuration. Receiving component 1202 can receive a communication from the UE, wherein timing of the communication is based at least in part on a multi-TRP autonomous timing advance adjustment procedure performed by the UE.

[0175] The sending component 1204 can send a reference signal set to the UE, wherein the UE uses the strongest reference signal in the reference signal set or one of the earliest arriving reference signals in the reference signal set for the multi-TRP autonomous timing advance adjustment process.

[0176] The sending component 1204 can send an indication to the UE to associate the reference signal with the TRP identifier.

[0177] The sending component 1204 and / or the configuring component 1208 may send a reference signal group configuration associated with the reference signal to the UE, wherein the indication associating the reference signal with the TRP identifier is associated with the reference signal group configuration.

[0178] Fig.12 The number and arrangement of components shown in the figure are provided as examples. In practice, there may be Fig.12 The components shown in the figure may include additional components, fewer components, different components, or components arranged in a different manner. Fig.12 Two or more components shown in may be implemented in a single component, or Fig.12 The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Fig.12 The assembly of (one or more) components shown in the executable is described as being composed of Fig.12One or more functions performed by another component collection shown in .

[0179] The following provides an overview of some aspects of the disclosure:

[0180] Aspect 1: A method of wireless communication performed by a UE, the method comprising: receiving a first reference signal from a first TRP; receiving a second reference signal from a second TRP; and performing an autonomous timing advance adjustment process by: autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal.

[0181] Aspect 2: A method according to Aspect 1, wherein the measurement associated with the first reference signal is associated with a first downlink reception timing associated with the first TRP, and wherein the measurement associated with the second reference signal is associated with a second downlink reception timing associated with the second TRP.

[0182] Aspect 3: A method according to any one of Aspects 1 to 2, wherein, for each of the first TRP and the second TRP, the corresponding timing advance parameter is autonomously adjusted based at least in part on at least one of the following: a new downlink reception timing associated with the corresponding TRP; a physical layer time constant; a timing advance offset value; a new time alignment amount associated with the corresponding TRP; an old time alignment amount associated with the corresponding TRP; or an old downlink reception timing associated with the corresponding TRP.

[0183] Aspect 4: According to the method described in any one of Aspects 1 to 3, the method further includes: receiving a first reference signal set from the first TRP, wherein the first reference signal is one of the strongest reference signal in the first reference signal set or the earliest arriving reference signal in the first reference signal set; and receiving a second reference signal set from the second TRP, wherein the second reference signal is one of the strongest reference signal in the second reference signal set or the earliest arriving reference signal in the second reference signal set.

[0184] Aspect 5: The method according to any one of aspects 1 to 4, wherein at least one of the first reference signal or the second reference signal is one of a synchronization signal block, a channel state information reference signal, or a positioning reference signal.

[0185] Aspect 6: A method according to any one of Aspects 1 to 5, wherein the first reference signal is associated with a first TRP identifier associated with the first TRP, and wherein the second reference signal is associated with a second TRP identifier associated with the second TRP.

[0186] Aspect 7: A method according to Aspect 6, wherein at least one of the first TRP identifier or the second TRP identifier is associated with one of a control resource set pool index, a physical channel identifier, or a sounding reference signal set identifier.

[0187] Aspect 8: According to the method according to any one of Aspects 6 to 7, the method also includes: receiving an indication to associate the first reference signal with the first TRP identifier and to associate the second reference signal with the second TRP identifier.

[0188] Aspect 9: A method according to Aspect 8, wherein the indication of associating the first reference signal with the first TRP identifier and associating the second reference signal with the second TRP identifier is received via one of radio resource control communication, MAC-CE communication, or downlink control information message.

[0189] Aspect 10: A method according to any one of Aspects 8 to 9, wherein the indication of associating the first reference signal with the first TRP identifier and associating the second reference signal with the second TRP identifier is associated with a bitmap that maps the first reference signal to the first TRP identifier and the second reference signal to the second TRP identifier.

[0190] Aspect 11: A method according to any one of Aspects 8 to 10, wherein the indication associating the first reference signal with the first TRP identifier is associated with a first reference signal configuration associated with the first reference signal, and wherein the indication associating the second reference signal with the second TRP identifier is associated with a second reference signal configuration associated with the second reference signal.

[0191] Aspect 12: According to the method described in any one of Aspects 8 to 11, the method further includes: receiving a first reference signal group configuration associated with the first reference signal, wherein the indication associating the first reference signal with the first TRP identifier is associated with the first reference signal group configuration; and receiving a second reference signal group configuration associated with the second reference signal, wherein the indication associating the second reference signal with the second TRP identifier is associated with the second reference signal group configuration.

[0192] Aspect 13: A method of wireless communication performed by a network node, the method comprising: sending a reference signal configuration associated with a TRP to a UE; sending a reference signal to the UE based at least in part on the reference signal configuration; and receiving communications from the UE, wherein the timing of the communications is based at least in part on a multi-TRP autonomous timing advance adjustment process performed by the UE.

[0193] Aspect 14: A method according to Aspect 13, wherein the multi-TRP autonomous timing advance adjustment process is associated with a downlink reception timing associated with the TRP and is associated with another downlink reception timing associated with another TRP.

[0194] Aspect 15: A method according to any one of Aspects 13 to 14, wherein the multi-TRP autonomous timing advance adjustment process is based at least in part on at least one of the following: a new downlink reception timing associated with the TRP; a physical layer time constant; a timing advance offset value; a new time alignment amount associated with the TRP; an old time alignment amount associated with the TRP; or an old downlink reception timing associated with the TRP.

[0195] Aspect 16: According to the method described in any one of Aspects 13 to 15, the method further includes: sending a reference signal set to the UE, wherein the UE uses one of the strongest reference signal in the reference signal set or the earliest arriving reference signal in the reference signal set for the multi-TRP autonomous timing advance adjustment process.

[0196] Aspect 17: The method according to any one of aspects 13 to 16, wherein the reference signal is one of a synchronization signal block, a channel state information reference signal or a positioning reference signal.

[0197] Aspect 18: A method according to any one of Aspects 13 to 17, wherein the reference signal is associated with a TRP identifier associated with the TRP.

[0198] Aspect 19: The method according to Aspect 18, wherein the TRP identifier is associated with one of a control resource set pool index, a physical channel identifier, or a sounding reference signal set identifier.

[0199] Aspect 20: According to the method according to any one of Aspects 18 to 19, the method also includes: sending an indication to the UE to associate the reference signal with the TRP identifier.

[0200] Aspect 21: The method according to aspect 20, wherein the indication of associating the reference signal with the TRP identifier is sent via one of a radio resource control communication, a MAC-CE communication, or a downlink control information message.

[0201] Aspect 22: A method according to any one of Aspects 20 to 21, wherein the indication associating the reference signal with the TRP identifier is associated with a bitmap mapping the reference signal to the TRP.

[0202] Aspect 23: A method according to any one of Aspects 20 to 22, wherein the indication associating the reference signal with the TRP identifier is sent in a communication including the reference signal configuration.

[0203] Aspect 24: According to the method described in any one of Aspects 20 to 23, the method further includes: sending a reference signal group configuration associated with the reference signal to the UE, wherein the indication associating the reference signal with the TRP identifier is associated with the reference signal group configuration.

[0204] Aspect 25: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 12.

[0205] Aspect 26: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 1 to 12.

[0206] Aspect 27: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 12.

[0207] Aspect 28: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 12.

[0208] Aspect 29: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 12.

[0209] Aspect 30: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 13 to 24.

[0210] Aspect 31: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 13 to 24.

[0211] Aspect 32: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 13 to 24.

[0212] Aspect 33: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 13 to 24.

[0213] Aspect 34: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 13 to 24.

[0214] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0215] As used herein, the term "component" is intended to be broadly interpreted as hardware, and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes and / or functions, etc. As used herein, "processors" are implemented in hardware and / or a combination of hardware and software. It will be clear that the systems or methods described herein can be implemented using different forms of hardware and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, the operation and behavior of the system and / or method are not described herein with reference to specific software codes, because it will be understood by those skilled in the art that software and hardware can be designed to implement the system and / or method at least in part based on the description herein.

[0216] As used herein, "satisfying a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0217] Although the specific combination of features is set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner that is not specifically described in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (it includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (for example, a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other sorting of a, b and c).

[0218] Any element, action or instruction used herein should not be interpreted as key or necessary, unless explicitly stated. In addition, as used herein, the articles "one" and "a kind of" are intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "said one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only one item is intended to be referred to, the phrase "only one" or similar terms will be used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "having" an element of A may also have B). In addition, the phrase "based on" is intended to represent "based at least in part on", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless explicitly stated otherwise (eg, if used in conjunction with "either" or "only one of").

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: receiving a first reference signal from a first transmit reception point (TRP); receiving a second reference signal from a second TRP; as well as The autonomous timing advance adjustment process is performed by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal.

2. An apparatus according to claim 1, wherein the measurement associated with the first reference signal is associated with a first downlink reception timing associated with the first TRP, and wherein the measurement associated with the second reference signal is associated with a second downlink reception timing associated with the second TRP.

3. The device according to claim 1, wherein: For each of the first TRP and the second TRP, autonomously adjusting the corresponding timing advance parameter is based at least in part on at least one of: The new downlink receive timing associated with the corresponding TRP, Physical layer time constant, Timing advance offset value, a new time alignment amount associated with the corresponding TRP, the old time alignment associated with the corresponding TRP, or The old downlink reception timing associated with the corresponding TRP.

4. The apparatus of claim 1, wherein the instructions further cause the apparatus to: receiving a first reference signal set from the first TRP, wherein the first reference signal is one of a strongest reference signal in the first reference signal set or an earliest arriving reference signal in the first reference signal set; and A second reference signal set is received from the second TRP, wherein the second reference signal is one of the strongest reference signal in the second reference signal set or the earliest arriving reference signal in the second reference signal set.

5. The apparatus of claim 1, wherein at least one of the first reference signal or the second reference signal is one of a synchronization signal block, a channel state information reference signal, or a positioning reference signal.

6. The apparatus of claim 1, wherein the first reference signal is associated with a first TRP identifier associated with the first TRP, and wherein the second reference signal is associated with a second TRP identifier associated with the second TRP.

7. An apparatus according to claim 6, wherein at least one of the first TRP identifier or the second TRP identifier is associated with one of a control resource set pool index, a physical channel identifier, or a sounding reference signal set identifier.

8. An apparatus according to claim 6, wherein the instruction further causes the apparatus to receive an instruction to associate the first reference signal with the first TRP identifier and to associate the second reference signal with the second TRP identifier.

9. An apparatus according to claim 8, wherein the indication of associating the first reference signal with the first TRP identifier and associating the second reference signal with the second TRP identifier is received via one of a radio resource control communication, a medium access control (MAC) control element (MAC-CE) communication, or a downlink control information message.

10. The apparatus of claim 8, wherein the indication associating the first reference signal with the first TRP identifier and associating the second reference signal with the second TRP identifier is associated with a bitmap mapping the first reference signal to the first TRP identifier and mapping the second reference signal to the second TRP identifier.

11. An apparatus according to claim 8, wherein the indication associating the first reference signal with the first TRP identifier is associated with a first reference signal configuration associated with the first reference signal, and wherein the indication associating the second reference signal with the second TRP identifier is associated with a second reference signal configuration associated with the second reference signal.

12. The apparatus of claim 8, wherein the instructions further cause the apparatus to: receiving a first reference signal group configuration associated with the first reference signal, wherein the indication associating the first reference signal with the first TRP identifier is associated with the first reference signal group configuration; and Receive a second reference signal group configuration associated with the second reference signal, wherein the indication associating the second reference signal with the second TRP identifier is associated with the second reference signal group configuration.

13. An apparatus for wireless communication at a network node, the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: sending a reference signal configuration associated with a transmit reception point (TRP) to a user equipment (UE); sending a reference signal to the UE based at least in part on the reference signal configuration; as well as Communications are received from the UE, wherein the timing of the communications is based at least in part on a multi-TRP autonomous timing advance adjustment process performed by the UE.

14. An apparatus according to claim 13, wherein the multi-TRP autonomous timing advance adjustment process is associated with a downlink reception timing associated with the TRP and is associated with another downlink reception timing associated with another TRP.

15. The apparatus of claim 13, wherein the multi-TRP autonomous timing advance adjustment process is based at least in part on at least one of the following: the new downlink receive timing associated with said TRP, Physical layer time constant, Timing advance offset value, the new time alignment associated with the TRP, the old time alignment associated with the TRP, or The old downlink receive timing associated with the TRP.

16. An apparatus according to claim 13, wherein the instruction further causes the apparatus to send a reference signal set to the UE, wherein the UE uses one of the strongest reference signal in the reference signal set or the earliest arriving reference signal in the reference signal set for the multi-TRP autonomous timing advance adjustment process.

17. The apparatus of claim 13, wherein the reference signal is one of a synchronization signal block, a channel state information reference signal, or a positioning reference signal.

18. The apparatus of claim 13, wherein the reference signal is associated with a TRP identifier associated with the TRP.

19. The apparatus of claim 18, wherein the TRP identifier is associated with one of a control resource set pool index, a physical channel identifier, or a sounding reference signal set identifier.

20. The apparatus of claim 18, wherein the instructions further cause the apparatus to send an indication to the UE to associate the reference signal with the TRP identifier.

21. The apparatus of claim 20, wherein the indication associating the reference signal with the TRP identifier is sent via one of a radio resource control communication, a medium access control (MAC) control element (MAC-CE) communication, or a downlink control information message.

22. The apparatus of claim 20, wherein the indication associating the reference signal with the TRP identifier is associated with a bitmap mapping the reference signal to the TRP.

23. The apparatus of claim 20, wherein the indication associating the reference signal with the TRP identifier is sent in a communication including the reference signal configuration.

24. The apparatus of claim 20, wherein the instruction further causes the apparatus to send a reference signal group configuration associated with the reference signal to the UE, wherein the indication associating the reference signal with the TRP identifier is associated with the reference signal group configuration.

25. A method of wireless communication performed by a user equipment (UE), the method comprising: receiving a first reference signal from a first transmit reception point (TRP); receiving a second reference signal from a second TRP; as well as The autonomous timing advance adjustment process is performed by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on measurements associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on measurements associated with the second reference signal.

26. A method according to claim 25, wherein the measurement associated with the first reference signal is associated with a first downlink reception timing associated with the first TRP, and wherein the measurement associated with the second reference signal is associated with a second downlink reception timing associated with the second TRP.

27. The method according to claim 25, wherein: For each of the first TRP and the second TRP, autonomously adjusting the corresponding timing advance parameter is based at least in part on at least one of: The new downlink receive timing associated with the corresponding TRP, Physical layer time constant, Timing advance offset value, a new time alignment amount associated with the corresponding TRP, the old time alignment associated with the corresponding TRP, or The old downlink reception timing associated with the corresponding TRP.

28. The method according to claim 25, further comprising: receiving a first reference signal set from the first TRP, wherein the first reference signal is one of a strongest reference signal in the first reference signal set or an earliest arriving reference signal in the first reference signal set; as well as A second reference signal set is received from the second TRP, wherein the second reference signal is one of the strongest reference signal in the second reference signal set or the earliest arriving reference signal in the second reference signal set.

29. A method of wireless communication performed by a network node, the method comprising: sending a reference signal configuration associated with a transmit reception point (TRP) to a user equipment (UE); sending a reference signal to the UE based at least in part on the reference signal configuration; as well as Communications are received from the UE, wherein the timing of the communications is based at least in part on a multi-TRP autonomous timing advance adjustment process performed by the UE.

30. The method of claim 29, wherein the multi-TRP autonomous timing advance adjustment process is associated with a downlink reception timing associated with the TRP and is associated with another downlink reception timing associated with another TRP.

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