Channel reciprocity for multi-panel base stations

Abstract

Aspects of the disclosure relate to communications using a multi-panel base station. In an aspect, a base station can determine a plurality of indicators identifying a plurality of antenna panels on the base station, where each of the plurality of indicators identifies a respective antenna panel of the plurality of antenna panels. Further, the base station can transmit, to a user equipment (UE), the plurality of indicators identifying the plurality of antenna panels, respectively. Additional aspects of the disclosure relate to communications using a user equipment. In an aspect, a user equipment can receive, from a base station configured to communicate via a plurality of panels, a plurality of indicators identifying a plurality of antenna panels, respectively, and further, the user equipment can transmit, to the plurality of antenna panels of the base station, a plurality of sounding reference signals based on the plurality of indicators.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to patent application No. 20200100557 filed with the Hellenic Patent and Trademark Office on September 14, 2020, the entire contents of which are incorporated herein by reference, as fully set forth herein in their entirety and for all applicable purposes. Technical Field

[0003] The technologies discussed below generally relate to wireless communication networks, and more specifically, to communications using multi-panel base stations. Background Technology

[0004] In wireless communication systems, such as those defined under the 5G New Radio (NR) standard, an access point (e.g., a base station) can communicate with a user equipment (UE) (e.g., a smartphone). This communication can utilize various duplex modes. For example, each of the base station (e.g., a gNodeB (gNB)) and the UE can operate in half-duplex or full-duplex mode. In half-duplex mode, downlink and uplink transmissions occur at different times. In some examples, half-duplex communication can utilize time-division duplex (TDD), in which transmissions in different directions on a given channel are separated from each other using time-division multiplexing. In full-duplex mode, downlink and uplink transmissions can occur simultaneously. In some examples, full-duplex communication can utilize frequency-division duplex (FDD) in paired spectrum, in which transmissions in different directions occur on different carrier frequencies. In other examples, full-duplex communication can utilize sub-band FDD in unpaired spectrum, where transmissions in different directions are carried in different sub-bands (or BWPs) of the carrier bandwidth. Summary of the Invention

[0005] The following is a summary of one or more aspects of this disclosure to provide a basic understanding of these aspects. This summary is not a comprehensive overview of all the features contemplated in this disclosure, and is neither intended to identify key or essential elements of all aspects of this disclosure, nor to outline the scope of any or all aspects of this disclosure. Its sole purpose is to present, in some form, some concepts of one or more aspects of this disclosure as a prelude to the more detailed description that will follow.

[0006] Various aspects of this disclosure relate to communication using a multi-panel base station. The multi-panel base station can indicate to the UE that it has multiple antenna panels, for example, by providing indicators that separately indicate the multiple antenna panels. In this way, the UE can know the antenna panels of the base station and therefore adjust its communication configuration according to which antenna panel of the base station is communicating with the UE.

[0007] In one example, a method for wireless communication performed by a base station is disclosed. The method includes: sending a plurality of indicators identifying a plurality of antenna panels on a user equipment (UE), wherein each of the plurality of indicators identifies a corresponding panel among the plurality of antenna panels; and communicating with the UE based on the plurality of indicators of the plurality of antenna panels.

[0008] In another example, a base station for wireless communication is disclosed. The base station includes: at least one processor, a transceiver communicatively coupled to the at least one processor, and a memory communicatively coupled to the at least one processor. The at least one processor can be configured to: send to a user equipment (UE) a plurality of indicators identifying a plurality of antenna panels on the base station, wherein each of the plurality of indicators identifies a corresponding panel among the plurality of antenna panels; and to communicate with the UE based on the plurality of indicators of the plurality of antenna panels.

[0009] In another example, a non-transitory processor-readable storage medium having instructions for a base station may be disclosed. When executed by processing circuitry, the instructions cause the processing circuitry to: send to a user equipment (UE) a plurality of indicators identifying a plurality of antenna panels on the base station, wherein each of the plurality of indicators identifies a corresponding panel among the plurality of antenna panels; and communicate with the UE based on the plurality of indicators for the plurality of antenna panels.

[0010] In yet another example, a base station for wireless communication may be disclosed. The base station includes: components for transmitting to a user equipment (UE) a plurality of indicators identifying a plurality of antenna panels on the base station, wherein each of the plurality of indicators identifies a corresponding panel among the plurality of antenna panels; and components for communicating with the UE based on the plurality of indicators of the plurality of antenna panels.

[0011] In one example, a method for wireless communication performed by a UE is disclosed. The method includes: receiving from a base station configured to communicate via a plurality of antenna panels, each identifying one of the plurality of antenna panels; and transmitting a plurality of sounding reference signals (SRS) to the plurality of antenna panels of the base station based on the plurality of indicators.

[0012] In another example, a UE for wireless communication is disclosed. The UE includes: at least one processor, a transceiver communicatively coupled to the at least one processor, and a memory communicatively coupled to the at least one processor. The at least one processor may be configured to: receive from a base station configured to communicate via a plurality of antenna panels, each identifying one of the plurality of antenna panels; and transmit a plurality of sounding reference signals (SRS) to the plurality of antenna panels of the base station based on the plurality of indicators.

[0013] In another example, a non-transitory processor-readable storage medium having instructions for a UE can be disclosed. When executed by processing circuitry, the instructions cause the processing circuitry to: receive from a base station configured to communicate via multiple antenna panels a plurality of indicators that respectively identify the plurality of antenna panels; and transmit multiple sounding reference signals (SRS) to the plurality of antenna panels of the base station based on the plurality of indicators.

[0014] In yet another example, a UE for wireless communication may be disclosed. The UE includes: means for receiving from a base station configured to communicate via a plurality of antenna panels, each identifying a plurality of antenna panels; and means for transmitting a plurality of SRSs to the plurality of antenna panels of the base station based on the plurality of indicators.

[0015] These and other aspects will become more fully understood upon reading the following detailed description. Other aspects, features, and embodiments will become apparent to those skilled in the art when reading the following description of specific exemplary embodiments in conjunction with the accompanying drawings. While features may be discussed with respect to certain embodiments and drawings below, all embodiments may include one or more of the advantageous features discussed herein. In other words, while one or more embodiments may be discussed as having certain advantageous features, one or more of these features may also be used according to the various embodiments discussed herein. Similarly, while exemplary embodiments may be discussed below as embodiments of a device, system, or method, these exemplary embodiments may be implemented in various devices, systems, and methods. Attached Figure Description

[0016] Figure 1 It is a schematic diagram based on some aspects of wireless communication systems.

[0017] Figure 2 This is a conceptual diagram based on some aspects of a radio access network.

[0018] Figure 3 This is a diagram illustrating an example of a frame structure used in wireless communication networks, based on several aspects.

[0019] Figure 4 This is a diagram illustrating an example of the use of beamforming in communication between a base station and a UE, based on some aspects.

[0020] Figure 5 This is a diagram illustrating an exemplary SRS configuration for a set of Detection Reference Signals (SRS) resources.

[0021] Figures 6A to 6C The illustration shows an example of full-duplex communication in unpaired spectrum, based on several aspects.

[0022] Figure 7A This is a schematic diagram of a base station (e.g., a gNB) that includes an antenna array configured for full-duplex communication.

[0023] Figure 7B It is based on the use of certain aspects. Figure 7A The diagram illustrates an example of full-duplex wireless communication performed by a multi-panel antenna array.

[0024] Figure 8 This is an example diagram illustrating communication between a multi-panel base station and a UE.

[0025] Figure 9A and Figure 9B This is an example diagram illustrating multiple panels in a multi-panel base station operating in various modes under two different scenarios.

[0026] Figure 10 This is an example diagram of a multi-panel base station in both Time Division Duplex (TDD) and Reciprocity modes.

[0027] Figure 11A This is an example diagram illustrating an SRS resource that does not incorporate protection symbols, according to some aspects of this disclosure.

[0028] Figure 11B This is an example diagram illustrating an SRS resource incorporating protection symbols according to some aspects of this disclosure.

[0029] Figure 12A Two example diagrams illustrating a base station in TDD mode according to some aspects of this disclosure are shown.

[0030] Figure 12B An example diagram of a base station in Frequency Division Duplex (FDD) mode, illustrating some aspects of this disclosure, is shown.

[0031] Figure 13 This is a block diagram illustrating an example of a hardware implementation of a base station for employing a processing system, based on several aspects.

[0032] Figure 14 This is a flowchart of an exemplary method for wireless communication performed by a base station, based on some aspects.

[0033] Figure 15 This is a flowchart of an exemplary method for wireless communication performed by a base station, based on some aspects.

[0034] Figure 16 This is a block diagram illustrating an example of a hardware implementation of a UE for using a processing system, based on several aspects.

[0035] Figure 17This is a flowchart of an exemplary method for wireless communication performed by a user equipment, based on some aspects.

[0036] Figure 18 This is a flowchart of an exemplary method for wireless communication performed by a user equipment, based on some aspects. Detailed Implementation

[0037] The detailed descriptions below, illustrated with reference to the accompanying drawings, are intended to describe various configurations and are not intended to represent the only configuration in which the concepts described herein can be practiced. The detailed descriptions include specific details for the purpose of providing a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring this concept.

[0038] The electromagnetic spectrum is often subdivided into various levels, bands, channels, etc., based on frequency / wavelength. In 5G NR, the two initial operating bands have been designated as frequency range codes FR1 (410MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). It should be understood that although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the “sub-6GHz” band in various documents and articles. Similar naming issues sometimes occur with FR2, although FR2 is different from the Extremely High Frequency (EHF) band (30GHz–300GHz) designated as a “millimeter wave” band by the International Telecommunication Union (ITU), it is often (interchangeably) referred to as the “millimeter wave” band in documents and articles.

[0039] The frequencies between FR1 and FR2 are often referred to as intermediate frequency (IF) frequencies. Recent 5G NR studies have designated the operating bands used for these IF frequencies as the frequency range designation FR3 (7.126 GHz – 24.25 GHz). Bands falling within FR3 can inherit the characteristics of FR1 and / or FR2, and thus can effectively extend the features of FR1 and / or FR2 into the IF frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been designated as the frequency range designations FR2x (52.6 GHz – 71 GHz), FR4 (71 GHz – 114.25 GHz), and FR5 (114.25 GHz – 275 GHz). Each of these higher frequency bands falls within the EHF band.

[0040] In light of the foregoing, unless specifically stated otherwise, it should be understood that the terms "below 6 GHz" and the like, when used herein, can broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless specifically stated otherwise, it should be understood that the terms "millimeter wave" and the like, when used herein, can broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR2x, FR4 and / or FR5, or may be within the EHF band.

[0041] While aspects and embodiments have been described in this application by way of example, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, embodiments and / or uses may occur via integrated chip embodiments and other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / procurement devices, medical devices, AI-enabled devices, etc.). While some examples may or may not be specific to a particular use case or application, a wide variety of applicability to the described innovations is possible. The range of implementations can extend from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating the described aspects and features may also necessarily include additional components and features for implementing and practicing the claimed and described embodiments. For example, the transmission and reception of wireless signals necessarily involve several components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors(s), interleavers, adders / summers, etc.). The innovative intent described herein can be implemented in a wide variety of devices, chip-level components, systems, distributed deployments, end-user devices, etc., varying in size, shape, and construction.

[0042] The various concepts presented herein can be implemented across a wide range of telecommunications systems, network architectures, and communication standards. Reference is now made to... Figure 1 By way of illustrative example and not limitation, reference is made to wireless communication system 100 to illustrate various aspects of this disclosure. Wireless communication system 100 includes three interacting domains: core network 102, radio access network (RAN) 104, and user equipment (UE) 106. With wireless communication system 100, UE 106 can be enabled to implement data communication with external data network 110 such as (but not limited to) the Internet.

[0043] RAN 104 can implement any suitable one or more wireless communication technologies to provide radio access to UE 106. As an example, RAN 104 can operate according to the 3rd Generation Partnership Project (3GPP) New Radio (NR) specification (often referred to as 5G). As another example, RAN 104 can operate under a hybrid 5G NR and Evolved Universal Terrestrial Radio Access Network (eUTRAN) standard (often referred to as LTE). 3GPP refers to this hybrid RAN as Next Generation RAN or NG-RAN. Of course, many other examples can be utilized within the scope of this disclosure.

[0044] As illustrated, RAN 104 includes multiple base stations 108. Broadly speaking, a base station is a network element in a radio access network responsible for radio transmission and reception to or from a UE in one or more cells. In different technologies, standards, or contexts, a base station may be referred to by those skilled in the art as a base transceiver station (BTS), radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), access point (AP), Node B (NB), eNode B (eNB), gNode B (gNB), transmit and receive point (TRP), or some other suitable term. In some examples, a base station may include two or more TRPs, which may be co-located or non-co-located. Each TRP may communicate on the same or different carrier frequencies within the same or different frequency bands.

[0045] The illustration also shows a radio access network (RAN) 104 supporting wireless communication for multiple mobile devices. Mobile devices may be referred to as User Equipment (UE) under the 3GPP standard, but may also be referred to by those skilled in the art as mobile station (MS), subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal (AT), mobile terminal, radio terminal, remote terminal, handheld device, terminal, user agent, mobile client, client, or any other suitable term. A UE may be a device that provides users with access to network services.

[0046] In this document, a “mobile” device does not necessarily need to be mobile and can be stationary. The term mobile device or “mobile device” refers to a wide range of devices and technologies. A UE may include several hardware structural components of a size, shape, and arrangement designed to facilitate communication; these components may include antennas, antenna array modules, RF chains, amplifiers, one or more processors, etc., electrically coupled to each other. For example, some non-limiting examples of mobile devices include, for instance, mobile phones, cellular phones (cell phones), smartphones, Session Initiation Protocol (SIP) phones, laptops, personal computers (PCs), notebooks, netbooks, smartbooks, tablets, personal digital assistants (PDAs), and a wide range of embedded systems, as opposed to the “Internet of Things (IoT)”. In addition, a mobile device may be an automobile or other vehicle, a remote sensor or actuator, a robot or robotic device, a satellite radio, a Global Positioning System (GPS) device, an object tracking device, a drone, a multi-rotor helicopter, a quadcopter helicopter, a remote control device, a consumer and / or wearable device (such as glasses, wearable cameras, virtual reality devices, smartwatches, health or fitness trackers, digital audio players (e.g., MP3 players)), a camera, a game console, etc. Furthermore, mobile devices can be digital home devices or smart home devices, such as home audio, video and / or multimedia equipment, home appliances, vending machines, smart lighting, home security systems, smart meters, etc. Additionally, mobile devices can be smart energy devices, security devices, solar panels or solar arrays, municipal infrastructure equipment controlling electricity (e.g., smart grids), lighting, water, etc., industrial automation and enterprise equipment, logistics controllers, agricultural equipment, etc. Further still, mobile devices can provide connected medical or telemedicine support, i.e., remote healthcare. Telemedicine devices can include telemedicine monitoring devices and telemedicine management devices, whose communications may receive preferential or priority access compared to other types of information, for example, in terms of priority access to the transmission of critical service data and / or the relevant QoS of critical service data transmission.

[0047] Wireless communication between RAN 104 and UE 106 can be described as utilizing an air interface. Transmissions via the air interface from a base station (e.g., base station 108) to one or more UEs (e.g., UE 106) can be referred to as downlink (DL) transmissions. According to certain aspects of this disclosure, the term downlink can refer to point-to-multipoint transmissions originating at a scheduling entity (further described below; e.g., base station 108). Another way to describe this scheme is to use the term broadcast channel multiplexing. Transmissions from a UE (e.g., UE 106) to a base station (e.g., base station 108) can be referred to as uplink (UL) transmissions. According to other aspects of this disclosure, the term uplink can refer to point-to-point transmissions originating at a scheduled entity (further described below; e.g., UE 106).

[0048] In some examples, access to the air interface can be scheduled, where a scheduling entity (e.g., base station 108) allocates resources for communication between some or all devices and equipment within its service area or cell. Within this disclosure, as further discussed below, the scheduling entity may be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more scheduled entities. That is, for scheduled communication, a UE 106, which may be a scheduled entity, can utilize the resources allocated by the scheduling entity 108.

[0049] Base station 108 is not the only entity that can act as a scheduling entity. That is, in some examples, a UE can act as a scheduling entity to schedule resources for one or more scheduled entities (e.g., one or more other UEs). And as discussed more further below, a UE can communicate directly with other UEs in a peer-to-peer manner and / or in a relay configuration.

[0050] like Figure 1 As illustrated, scheduling entity 108 can broadcast downlink service 112 to one or more scheduled entities 106. Broadly speaking, scheduling entity 108 is a node or device responsible for scheduling services in a wireless communication network, including downlink service 112, and in some examples, uplink service 116 from one or more scheduled entities 106 to scheduling entity 108. On the other hand, scheduled entity 106 is a node or device that receives downlink control information 114, which includes, but is not limited to, scheduling information (e.g., authorization), synchronization or timing information, or other control information from another entity in the wireless communication network (such as scheduling entity 108).

[0051] Furthermore, uplink and / or downlink control information and / or service information can be time-divided into frames, subframes, time slots, and / or symbols. As used herein, a symbol can refer to a time unit carrying one resource element (RE) per subcarrier in an Orthogonal Frequency Division Multiplexing (OFDM) waveform. A time slot can carry 7 or 14 OFDM symbols. A subframe can refer to a duration of 1 ms. Multiple subframes or time slots can be grouped together to form a single frame or radio frame. Of course, these definitions are not required, and any suitable scheme can be used to organize the waveform, and various time-division schemes of the waveform can have any suitable duration.

[0052] Generally, base station 108 may include a backhaul interface for communication with the backhaul section 120 of a wireless communication system. Backhaul 120 can provide a link between base station 108 and core network 102. Furthermore, in some examples, the backhaul network can provide interconnection between the respective base stations 108. Various types of backhaul interfaces can be employed, such as direct physical connections using any suitable transport network, virtual networks, etc.

[0053] Core network 102 may be part of wireless communication system 100 and may be independent of the radio access technology used in RAN 104. In some examples, core network 102 may be configured according to 5G standards (e.g., 5GC). In other examples, core network 102 may be configured according to 4G Evolved Packet Core (EPC) or any other suitable standard or configuration.

[0054] refer to Figure 2 For example, rather than limiting, a schematic diagram of RAN 200 is provided. In some examples, RAN 200 can be combined with and not limited to the RAN 200 described above. Figure 1 The same applies to RAN 104 shown in the diagram. The geographical area covered by RAN200 can be divided into cellular areas (cells), which can be uniquely identified by user equipment (UE) based on an identifier broadcast from an access point or base station. Figure 2 The diagram illustrates macro cells 202, 204, and 206, as well as small cell 208, each of which may comprise one or more sectors (not shown). A sector is a sub-area of ​​a cell. All sectors within a cell are served by the same base station. Radio links within a sector can be identified by a single logical identifier belonging to that sector. In a cell divided into sectors, multiple sectors within the cell can be formed by antenna groups, each antenna responsible for communication with UEs within a portion of the cell.

[0055] Various base stations can be used for deployment. For example, in Figure 2The illustration shows two base stations 210 and 212 in cells 202 and 204; a third base station 214 in cell 206 controlling a remote radio head (RRH) 216. That is, the base stations can have integrated antennas, or they can be connected to the antennas or RRHs via feed cables. In the illustrated example, cells 202, 204, and 206 can be referred to as macro cells because base stations 210, 212, and 214 support cells of a large size. Furthermore, a base station 218 in a small cell 208 (e.g., macro cell, pico cell, femtocell, home base station, home Node B, home eNode B, etc.) is shown, which may overlap with one or more macro cells. In this example, cell 208 can be referred to as a small cell because base station 218 supports cells of a relatively small size. Cell size design can be accomplished based on system design and component constraints.

[0056] It will be understood that the radio access network 200 may include any number of radio base stations and cells. Furthermore, relay nodes can be deployed to extend the size or coverage area of ​​a given cell. Base stations 210, 212, 214, and 218 provide radio access points to the core network for any number of mobile devices. In some examples, base stations 210, 212, 214, and / or 218 may be integrated with those described above and... Figure 1 The base station / scheduling entity 108 shown in the diagram is the same.

[0057] Within RAN 200, a cell may include UEs capable of communicating with one or more sectors of each cell. Furthermore, each base station 210, 212, 214, and 218 can be configured to provide access to the core network 102 (see [link to core network 102]) for all UEs within the corresponding cell. Figure 1 Access points. For example, UEs 222 and 224 can communicate with base station 210; UEs 226 and 228 can communicate with base station 212; UEs 230 and 232 can communicate with base station 214 via RRH 216; and UE 234 can communicate with base station 218. In some examples, UEs 222, 224, 226, 228, 230, 232, 234, 238, 240 and / or 242 can communicate with the access points described above and... Figure 1 The UE / scheduled entity 106 shown in the diagram is the same.

[0058] In some examples, the unmanned aerial vehicle (UAV) 220 (which may be a drone or a quadcopter) may be a mobile network node and may be configured as a UE. For example, the UAV 220 may operate within cell 202 by communicating with base station 210.

[0059] In another aspect of RAN 200, sidelink signals can be used between UEs without relying on scheduling or control information from the base station. For example, sidelink communication can be utilized in device-to-device (D2D) networks, peer-to-peer (P2P) networks, vehicle-to-vehicle (V2V) networks, vehicle-to-everything (V2X) networks, and / or other suitable sidelink networks. For instance, two or more UEs (e.g., UEs 238, 240, and 242) can use sidelink signal 237 to communicate with each other without relaying the communication through the base station. In some examples, UEs 238, 240, and 242 can each act as a scheduling entity or transmitting sidelink device and / or a scheduled entity or receiving sidelink device to schedule resources and communicate sidelink signal 237 between them without relying on scheduling or control information from the base station. In other examples, two or more UEs (e.g., UEs 226 and 228) within the coverage area of ​​a base station (e.g., base station 212) may also communicate sidelink signal 227 via a direct link (sidelink) without relaying the communication through base station 212. In this example, base station 212 may allocate resources for sidelink communication to UEs 226 and 228.

[0060] To achieve a low block error rate (BLER) while still maintaining a very high data rate for transmissions over RAN 200, channel decoding can be used. That is, wireless communication can typically utilize appropriate error-correcting block codes. In a typical block code, the information message or sequence is divided into code blocks (CBs), and the encoder (e.g., codec (CODEC)) at the transmitting device then mathematically adds redundancy to the information message. Utilizing this redundancy in the encoded information message improves message reliability and enables correction of any bit errors that may occur due to noise.

[0061] In early 5G NR specifications, user data was encoded using quasi-cyclic low-density parity-check (LDPC) with two distinct base graphs: one used for large code blocks and / or high encoding / decoding rates, while the other was used for other purposes. Control information and the Physical Broadcast Channel (PBCH) were encoded using polarity coding, based on nested sequences. For these channels, puncturing, shortening, and repetition were used for rate matching.

[0062] However, those skilled in the art will understand that aspects of this disclosure can be implemented using any suitable channel codec. Various implementations of the scheduling entity and the scheduled entity may include suitable hardware and capabilities (e.g., encoders, decoders, and / or CODECs) to utilize one or more of these channel codecs for wireless communication.

[0063] The air interface in the radio access network 200 can utilize one or more multiplexing techniques and multiple access algorithms to enable simultaneous communication of various devices. For example, the 5G NR specification utilizes Orthogonal Frequency Division Multiplexing (OFDM) with a cyclic prefix (CP) to provide multiple access for UL transmissions from UEs 222 and 224 to base station 210, and provides multiplexing for DL ​​transmissions from base station 210 to one or more UEs 222 and 224. Furthermore, for UL transmissions, the 5G NR specification provides support for Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) with CP (also known as Single-Carrier FDMA (SC-FDMA)). However, within the scope of this disclosure, multiplexing and multiple access are not limited to the above schemes and can be provided using Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Sparse Code Multiple Access (SCMA), Resource Extended Multiple Access (RSMA), or other suitable multiple access schemes. In addition, multiplexing DL transmissions from base station 210 to UEs 222 and 224 can be provided using time division multiplexing (TDM), code division multiplexing (CDM), frequency division multiplexing (FDM), orthogonal frequency division multiplexing (OFDM), sparse code multiplexing (SCM) or other suitable multiplexing schemes.

[0064] The air interface in the radio access network 200 can also utilize one or more duplex algorithms. Duplex refers to a point-to-point communication link, in which two endpoints can communicate with each other in both directions. Full-duplex means that two endpoints can communicate with each other simultaneously. Half-duplex means that only one endpoint can send information to the other at a time. Half-duplex simulation is frequently implemented for wireless links using Time Division Duplex (TDD). In TDD, transmissions in different directions on a given channel are separated from each other using time division multiplexing. That is, at some times, the channel is dedicated to transmission in one direction, and at other times, the channel is dedicated to transmission in the other direction, where the direction may change very rapidly (e.g., several times per time slot). In wireless links, full-duplex channels typically rely on physical isolation between the transmitter and receiver, as well as appropriate interference cancellation techniques. Full-duplex simulation is frequently implemented for wireless links using Time Division Duplex (TDD). In FDD, transmissions in different directions operate at different carrier frequencies (e.g., within paired spectrum). In other examples, full-duplex communication can be implemented in unpaired spectrum (e.g., within a single carrier bandwidth), where transmissions in different directions occur within different sub-bands of the carrier bandwidth. This type of full-duplex communication may be referred to herein as sub-band full-duplex (SBFD), sub-band FDD, or flexible duplex.

[0065] Reference Figure 3The OFDM waveforms illustrated herein are used to describe various aspects of this disclosure. Those skilled in the art will understand that various aspects of this disclosure can be applied to SC-FDMA waveforms in essentially the same manner as described below. That is, while some examples of this disclosure may focus on OFDM links for clarity, it should be understood that the same principles can also be applied to SC-FDMA waveforms.

[0066] For reference Figure 3 The diagram illustrates an expanded view of an exemplary DL subframe 302, showing the OFDM resource grid. However, as those skilled in the art will readily understand, the physical (PHY) transmission structure for any particular application may differ from the example described herein, depending on any number of factors. Here, the horizontal direction represents time in OFDM symbols; and the vertical direction represents frequency in subcarriers.

[0067] Resource grid 304 can be used to schematically represent time-frequency resources available for a given antenna port. That is, in a multiple-input multiple-output (MIMO) implementation with multiple antenna ports available, a corresponding number of resource grids 304 can be available for communication. Resource grid 304 is divided into multiple resource elements (REs) 306. An RE is 1 subcarrier × 1 symbol, which is the smallest discrete part in the time-frequency grid and contains a single complex value representing data from a physical channel or signal. Depending on the modulation used in a particular implementation, each RE can represent one or more bits of information. In some examples, a block of REs may be referred to as a physical resource block (PRB) or resource block (RB) 308, which contains any suitable number of consecutive subcarriers in the frequency domain. In one example, an RB may include 12 subcarriers, independent of the number of the parameter set (numerology) used. In some examples, depending on the parameter set, an RB may include any suitable number of consecutive OFDM symbols in the time domain. Within this disclosure, it is assumed that a single RB (such as RB 308) corresponds exactly to a single communication direction (either transmitting or receiving for a given device).

[0068] A collection of contiguous or non-contiguous resource blocks may be referred to herein as a resource block group (RBG), sub-band, or bandwidth portion (BWP). A collection of sub-bands or BWPs can span the entire bandwidth. Scheduling of downlink or uplink transmissions by a UE (the scheduled entity) typically involves scheduling one or more resource elements 306 within one or more sub-bands or bandwidth portions (BWPs). Therefore, a UE typically utilizes only a subset of the resource grid 304. An RB can be the smallest unit of resource that can be allocated to a UE. Therefore, the more RBs scheduled for a UE, and the higher the modulation scheme selected for the air interface, the higher the UE's data rate.

[0069] In this illustration, RB 308 is shown as occupying a bandwidth less than the entire bandwidth of subframe 302, with some subcarriers shown above and below RB 308. In a given implementation, subframe 302 can have a bandwidth corresponding to any number of one or more RB 308s. Furthermore, in this illustration, RB 308 is shown as occupying a duration less than the entire duration of subframe 302, although this is merely one possible example.

[0070] Each 1ms subframe 302 can consist of one or more adjacent time slots. Figure 3 In the example shown, as an illustrative example, a subframe 302 includes four time slots 310. In some examples, time slots can be defined based on a specified number of OFDM symbols with a given cyclic prefix (CP) length. For example, a time slot may include 7 or 14 OFDM symbols with a nominal CP. Additional examples may include mini-time slots, sometimes referred to as shortened transmission time intervals (TTIs), with a shorter duration (e.g., one to three OFDM symbols). These mini-time slots or shortened transmission time intervals (TTIs) can be transmitted in some cases, occupying resources scheduled for ongoing time slot transmissions for the same or different UEs. Any number of resource blocks within a subframe or time slot can be utilized.

[0071] An expanded diagram of time slot 310 illustrates time slot 310 including control area 312 and data area 314. Generally, control area 312 can carry control channels, and data area 314 can carry data channels. Of course, a time slot can contain all DL, all UL, or at least one DL portion and at least one UL portion. Figure 3 The structure shown in the diagram is merely exemplary and may utilize different time slot structures, and may include one or more of one of a control area and a data area.

[0072] Despite Figure 3 Not shown, but various REs 306 within RB 308 can be scheduled to carry one or more physical channels, including control channels, shared channels, data channels, etc. Other REs 306 within RB 308 can also carry pilot or reference signals, including but not limited to demodulation reference signals (DMRS), control reference signals (CRS), channel state information-reference signals (CSI-RS), or sounding reference signals (SRS). These pilot or reference signals can provide information for receiving equipment to perform channel estimation for the corresponding channel, which can enable coherent demodulation / detection of the control and / or data channels within RB 308.

[0073] In DL transmission, the base station can allocate one or more REs 306 (e.g., within control area 312) to carry DL control information to one or more scheduled entities. This DL control information includes one or more DL control channels, such as the Physical Hybrid Automatic Repeat Request (HARQ) Indicator Channel (PHICH), Physical Downlink Control Channel (PDCCH), etc. The PDCCH carries downlink control information (DCI), which includes, but is not limited to, power control commands, scheduling information, grants, and / or the allocation of REs for DL ​​and UL transmissions. The PHICH carries HARQ feedback transmissions, such as acknowledgments (ACK) or negative acknowledgments (NACK). HARQ is a technique well known to those skilled in the art, where the integrity of packet transmissions can be checked for accuracy at the receiving end, for example, using any suitable integrity checking mechanism, such as checksums or cyclic redundancy checks (CRC). If the integrity of the transmission is confirmed, an ACK can be sent; otherwise, a NACK can be sent. In response to a NACK, the transmitting device can issue a HARQ retransmission, which can enable chase combining, incremental redundancy, etc.

[0074] The base station can also allocate one or more RE 306s to carry other DL signals, such as DMRS; Phase Tracking Reference Signal (PT-RS); CSI-RS; Primary Synchronization Signal (PSS); and Secondary Synchronization Signal (SSS). The UE can utilize PSS and SSS to achieve synchronization of radio frames, subframes, time slots, and symbols in the time domain, identify the center of the channel (system) bandwidth in the frequency domain, and identify the physical cell identifier (PCI) of the cell. Synchronization signals PSS and SSS, and in some examples PBCH and PBCHDMRS, can be transmitted in the Synchronization Signal Block (SSB). PBCH can also include a Primary Information Block (MIB), which includes various system information along with parameters used to decode the System Information Block (SIB). For example, the SIB can be SystemInformationType 1 (SIB1), which can include various additional system information. Examples of system information transmitted in the MIB may include, but are not limited to, subcarrier spacing, system frame number, configuration of the PDCCH Control Resource Set (CORESET) (e.g., PDCCH CORESET0), and the search space of SIB1. Examples of additional system information sent in SIB1 may include, but are not limited to, a list of random access search spaces, a list of common search spaces, a paging search space, downlink configuration information, and uplink configuration information. Together with SIB1, MIB provides the minimum system information (SI) for initial access.

[0075] In UL transmissions, the UE can utilize one or more RE 306s to carry UL control information to a scheduling entity. This UL control information includes one or more UL control channels, such as the Physical Uplink Control Channel (PUCCH). The UL control information can include a wide variety of packet types and categories, including pilots, reference signals, and information configured to enable or assist in decoding uplink data transmission. In some examples, the control information may include a scheduling request (SR), i.e., a request to the scheduling entity to schedule uplink transmissions. Here, in response to an SR transmitted on the control channel, the scheduling entity can send downlink control information that can schedule resources for uplink packet transmissions. The UL control information may also include HARQ feedback, Channel State Feedback (CSF), or any other suitable UL control information.

[0076] In addition to control information, one or more REs 306 (e.g., within data area 314) may be allocated for user data services. Such services may be carried on one or more traffic channels, such as the Physical Downlink Shared Channel (PDSCH) for DL ​​transmissions, or the Physical Uplink Shared Channel (PUSCH) for UL transmissions. In some examples, one or more REs 306 within data area 314 may be configured to carry an SIB (e.g., SIB1) that carries information enabling access to a given cell.

[0077] These physical channels are typically multiplexed and mapped to transport channels for processing at the Media Access Control (MAC) layer. The transport channel carries blocks of information called transport blocks (TBs). The transport block size (TBS) can correspond to the number of bits of information, and can be a controlled parameter based on the modulation and coding scheme (MCS) and the number of redundancies (RBs) in a given transmission.

[0078] The above text combined Figures 1 to 3 The channels or carriers described are not necessarily all channels or carriers that can be used between the scheduling entity and the scheduled entity, and those skilled in the art will recognize that other channels or carriers, such as other service, control, and feedback channels, can be used in addition to the channels or carriers illustrated.

[0079] Figure 4 This diagram illustrates the communication between base station 404 and UE 402 using beamforming signals according to certain aspects. Base station 404 can be... Figure 1 and / or Figure 2 Any of the base stations (e.g., gNB) or scheduling entities shown in the diagram, and UE 402 may be Figure 1 and / or Figure 2 The UE or any of the scheduled entities shown in the diagram.

[0080] Beamforming is a signal processing technique used at a transmitter or receiver to shape or guide an antenna beam (e.g., a transmit beam or a receive beam) along a spatial path between the transmitter and receiver. Beamforming can be achieved by combining signals communicating via an antenna set (e.g., antenna elements of an antenna array), such that some signals experience constructive interference while others experience destructive interference. To create the desired constructive / destructive interference, the transmitter or receiver can apply amplitude and / or phase shifts to the signals transmitted or received from the antenna set.

[0081] Figure 4 This diagram illustrates the communication between base station 404 and UE 402 using beamforming signals according to certain aspects. Base station 404 can be... Figure 1 and / or Figure 3 Any of the base stations (e.g., gNB) or scheduling entities shown in the diagram, and UE 402 may be Figure 1 and / or Figure 3 The UE or any of the scheduled entities shown in the diagram.

[0082] Base station 404 may typically be able to use one or more transmit beams to communicate with UE 402, and UE 402 may also be able to use one or more receive beams to communicate with base station 404. As used herein, the term transmit beam refers to a beam on base station 404 that can be used for downlink or uplink communication with UE 402. Furthermore, the term receive beam refers to a beam on UE 402 that can be used for downlink or uplink communication with base station 404.

[0083] exist Figure 4 In the example shown, base station 404 is configured to generate multiple transmit beams 406a-406h. In some scenarios, one or more of these transmit beams may be associated with different spatial directions. Additionally or alternatively, UE 402 may be configured to generate multiple receive beams 408a-408e, each associated with a different spatial direction. It should be noted that although some beams are illustrated as adjacent to each other, this arrangement may differ in different aspects. For example, transmit beams 406a-406h transmitted during the same symbol may not be adjacent to each other. In some examples, base station 404 and UE 402 may each transmit more or fewer beams, which are distributed in all directions (e.g., 350 degrees) and in three-dimensional space. Furthermore, transmit beams 406a-406h may include beams with varying beamwidths. For example, base station 404 may transmit some signals (e.g., SSB) on a wider beam and other signals (e.g., CSI-RS) on a narrower beam.

[0084] Base station 404 and UE 402 can select one or more transmit beams 406a-406h on base station 404 and one or more receive beams 408a-408e on UE 402 for communication. Beam selection can occur using uplink and downlink signals between the BS and UE, using a beam management procedure. In one example, during initial cell acquisition, UE 402 can execute a P1 beam management procedure. The P1 beam management procedure may include scanning one or more of the multiple transmit beams 406a-406h on the multiple receive beams 408a-408e to select a beam pair link (e.g., one of the transmit beams 406a-406h). The P1 procedure may also include selecting one or more of the receive beams (408a-408e) for a Physical Random Access Channel (PRACH) procedure for initial cell access. For example, periodic SSB beam sweeping can be implemented on base station 404 within a certain interval (e.g., based on SSB periodicity, which could be, for example, 20 ms). Therefore, base station 404 can be configured to up-sweep or transmit SSBs in each of a plurality of wider transmit beams 406a-406h during the beam sweep interval. The UE can measure the Reference Signal Received Power (RSRP) of each SSB transmit beam on each receive beam of the UE and select transmit and receive beams based on the measured RSRP. In one example, the selected receive beam could be the receive beam with the highest measured RSRP, and the selected transmit beam could have the highest measured RSRP on the selected receive beam.

[0085] After completing the P1 beam management and / or PRACH procedures, base station 404 and UE 402 can execute the P2 beam management procedure. The P2 beam management procedure can assist in beam refinement at base station 404. For example, base station 404 can be configured to upscan or transmit CSI-RS in each of a plurality of narrower transmit beams 406a-406h. Each of the narrower CSI-RS beams can be a sub-beam of a selected SSB transmit beam and / or other SSB transmit beams (e.g., within the spatial direction of one or more SSB transmit beams). Transmission of the CSI-RS transmit beams can occur periodically (e.g., as configured by gNB via Radio Resource Control (RRC) signaling), semi-persistently (e.g., as configured by gNB via RRC signaling and activated / deactivated via Media Access Control-Control Element (MAC-CE) signaling), or aperiodically (e.g., as triggered by gNB via Downlink Control Information (DCI)). UE 402 is configured to scan multiple CSI-RS transmit beams 406a-406h across multiple receive beams 408a-408e. Then, UE 402 performs receive CSI-RS beam measurements (e.g., RSRP, SINR, etc.) on each of the receive beams 408a-408e to determine the corresponding beam quality of each of the CSI-RS transmit beams 406a-406h measured on each of the receive beams 408a-408e.

[0086] Then, UE 402 can generate and transmit a Layer 1 (L1) measurement report to base station 404 on one or more of the receive beams 408a-408e, including the corresponding beam index (e.g., CSI-RS Resource Indicator (CRI)) and beam measurement (e.g., RSRP or SINR) of one or more of the CSI-RS transmit beams 406a-406h. Base station 404 can then select one or more CSI-RS transmit beams to communicate downlink and / or uplink control and / or data with UE 402 on them. In some examples, the selected CSI-RS transmit beam(s) have the highest RSRP from the L1 measurement report. The transmission of the L1 measurement report can occur periodically (e.g., as configured by gNB via RRC signaling), semi-persistently (e.g., as configured by gNB via RRC signaling and activated / deactivated via MAC-CE signaling), or aperiodically (e.g., as triggered by gNB via DCI).

[0087] UE 402 can also select a corresponding receive beam on UE 402 for each selected serving CSI-RS transmit beam to form a corresponding beam pair link (BPL) for each selected serving CSI-RS transmit beam. For example, UE 402 can perform a UE beam scan to obtain new beam measurements for the selected CSI-RS transmit beams by utilizing beam measurements obtained during the P2 procedure or by executing a P3 beam management procedure (e.g., a beam refinement procedure), thereby selecting a corresponding receive beam for each selected transmit beam. In some examples, the selected receive beam paired with a particular CSI-RS transmit beam may be the receive beam on which the highest RSRP is measured for the particular CSI-RS transmit beam.

[0088] In some examples, in addition to performing CSI-RS beam measurements, base station 404 may configure UE 402 to perform SSB beam measurements. For example, base station 404 may configure UE 402 to perform SSB beam measurements and / or CSI-RS beam measurements for beam fault detection (BFD), beam fault recovery (BFR), cell reselection, beam refinement (e.g., P3 procedure), beam tracking (e.g., for mobile UE 402 and / or base station 404), or other beam optimization purposes.

[0089] Furthermore, when the channel is reciprocal, the transmit and receive beams can be selected using an uplink beam management scheme. In one example, UE 402 can be configured to upscan or transmit on each of the multiple receive beams 408a-408e. For example, UE 402 can transmit SRS in a different beam direction on each beam. Additionally, base station 404 can be configured to receive uplink beam reference signals on the multiple transmit beams 406a-406h. Base station 404 then performs beam measurements (e.g., RSRP, SINR, etc.) of the beam reference signals on each of the transmit beams 406a-406h to determine the corresponding beam quality of each of the receive beams 408a-408e measured on each of the transmit beams 406a-406h.

[0090] Base station 404 can then select one or more transmit beams to communicate downlink and / or uplink control and / or data with UE 402. In some examples, the selected transmit beam(s) have the highest RSRP. UE 402 can then select a corresponding receive beam for each selected serving transmit beam to form a corresponding beam pair link (BPL) for each selected serving transmit beam using, for example, the P3 beam management procedure described above.

[0091] In one example, a single CSI-RS transmit beam (e.g., beam 406d) on base station 404 and a single receive beam (e.g., beam 408c) on the UE can form a single BPL for communication between base station 404 and UE 402. In another example, multiple CSI-RS transmit beams (e.g., beams 406c, 406d, and 406e) on base station 404 and a single receive beam (e.g., beam 408c) on UE 402 can form corresponding BPLs for communication between base station 404 and UE 402. In yet another example, multiple CSI-RS transmit beams (e.g., beams 406c, 406d, and 406e) on base station 404 and multiple receive beams (e.g., beams 408c and 408d) on UE 402 can form multiple BPLs for communication between base station 404 and UE 402. In this example, the first BPL may include a transmit beam 406c and a receive beam 408c, the second BPL may include a transmit beam 408d and a receive beam 408c, and the third BPL may include a transmit beam 408e and a receive beam 408d.

[0092] Figure 5 This diagram illustrates exemplary SRS configurations 500a-500c for SRS resource sets 502a-502c, each including SRS resources 504a-504f, according to some aspects. An SRS resource set may include one or more SRS resources. For example, SRS resource set 502a (SRS resource set 0) includes SRS resources 504a and 504b (SRS resources 0.0 and 0.1), SRS resource set 502b (SRS resource set 1) includes SRS resource 504c (SRS resource 1.0), and SRS resource set 502c (SRS resource set 2) includes SRS resource sets 504d, 504e, and 504f (SRS resources 2.0, 2.1, and 2.2).

[0093] like Figure 5 As illustrated, multiple SRS resource sets 502a-502c can be configured for the UE. Furthermore, each SRS resource set 502a-502c can be configured as periodic, aperiodic, or semi-persistent, such that each SRS resource within the corresponding SRS resource set is periodic, aperiodic, or semi-persistent, respectively. For example, SRS resources 504a and 504b within SRS resource set 502a can be periodic SRS resources, SRS resource 504c within SRS resource set 502b can be aperiodic SRS resources, and SRS resources 504d-504f within SRS resource set 502c can be semi-persistent SRS resources.

[0094] Each SRS resource 504a-504f includes a set of SRS resource parameters for configuring the SRS resource. For example, SRS resource parameters may include a set of ports(e.g., an uplink beam), the number of consecutive symbols, time-domain allocation, repetition, transmission comb structure, bandwidth, and other suitable parameters. Each SRS may also be quasi-co-located (QCL) with another reference signal (such as an SSB, CSI-RS) or another SRS. Therefore, based on the QCL association (e.g., with an SSB beam, CSI-RS beam, or SRS beam), the SRS resource can be transmitted using the same spatial domain filter used for receiving / transmitting the indicated reference signal (e.g., an SSB beam, CSI-RS beam, or SRS beam).

[0095] The corresponding set of SRS resource parameters for each SRS resource in a specific SRS resource set collectively forms the SRS resource set parameters for the SRS resource set. Furthermore, the SRS resource set itself may also include additional SRS resource set parameters. For example, the SRS resource set parameters for the aperiodic SRS resource set 502b may also include the aperiodic triggering states (e.g., code points) of the aperiodic SRS resource set 502b (e.g., there may be up to three triggering states, each mapped to an aperiodic SRS resource set), the time slot offset between the time slot of the DCI that triggers the aperiodic SRS resource and the transmission of the SRS (e.g., the SRS is transmitted k time slots after the time slot carrying the DCI containing the triggering state), and the CSI-RS resource identifier (CRI) estimated by the precoder for the aperiodic SRS and associated with the aperiodic SRS resource set 502b. As another example, the SRS configuration for periodic SRS resource set 502a or semi-persistent SRS resource set 502c can indicate the periodicity of the SRS resources (e.g., the periodicity of SRS transmission). The corresponding SRS resource set parameters then collectively form the SRS configurations 500a-500c for the corresponding SRS resource sets 502a-502c.

[0096] Generally, two signals transmitted from the same antenna port should traverse the same radio channel, while signals transmitted from two different antenna ports should traverse different radio conditions. In some cases, signals transmitted from two different antenna ports traverse radio channels with common properties. In this case, the antenna ports are referred to as QCL (Quasi-Co-located). If the properties of the channel through which a symbol transmitted from one antenna port passes can be inferred from the channel through which a symbol transmitted from the other antenna port passes, then the two antenna ports can be considered quasi-co-located. In 5G NR, the UE is equipped with channel estimation, frequency offset error estimation, and synchronization procedures for handling QCL. For example, if the UE knows that the radio channels corresponding to two different antenna ports are QCL in terms of Doppler shift, the UE can determine the Doppler shift of one antenna port and then apply the result to both antenna ports for channel estimation. This avoids the UE having to calculate the Doppler shift of the two antenna ports separately.

[0097] Four types of QCLs are defined in 5G NR: QCL Type A; QCL Type B; QCL Type C; and QCL Type D. For example, QCL Type A can indicate a downlink reference signal (e.g., SSB or CSI-RS) or an uplink reference signal (e.g., SRS) from which large-scale channel properties (LSCPs) of the downlink channel or signal, or the uplink channel or signal, can be inferred, such as Doppler shift, Doppler spread, average delay, and / or delay spread. QCL Types B and C can also indicate reference signals (e.g., SSB, CSI-RS, or SRS) from which specific LSPCPs can be inferred (e.g., Doppler shift and / or Doppler spread for QCL Type B and average delay and / or delay spread for QCL Type C). QCL Type D can indicate spatial reception (RX) parameters (e.g., the spatial properties of the beam on which the downlink / uplink channel or signal is transmitted). The spatial properties of a beam can be inferred from the beam used to transmit a reference signal (e.g., SSB, CSI-RS, or SRS) and can indicate at least one of, for example, beam direction or beamwidth.

[0098] QCL information can be conveyed via a Transmission Configuration Indication (TCI) state. A TCI state includes or maps to a QCL relationship configuration between one or more reference signals (e.g., SSB, CSI-RS, and SRS) and a downlink (DL) or uplink (UL) transmission. For example, a TCI state may include a DL TCI for downlink transmission, a combined DL / UL TCI, or spatial relationship information for UL transmission. For example, a TCI state may include one or more reference signal IDs, each identifying an SSB resource, CSI-RS resource, or SRS resource. Each resource (SSB, CSI-RS, or SRS resource) indicates the specific beam, frequency resource, and OFDM symbol of the reference signal on which it communicates. Therefore, in an example where the TCI state indicates QCL type D for downlink or uplink transmission, the reference signal ID can be used to identify the beam to be used for downlink or uplink transmission based on the QCL relationship with the associated reference signal (e.g., SSB, CSI-RS, or SRS) indicated in the TCI state.

[0099] Figures 6A to 6C The illustration depicts an example of full-duplex communication in unpaired spectrum. Figures 6A to 6C In the example shown, time is in the horizontal direction and frequency is in the vertical direction. Here, the carrier bandwidth 602 (or a set of one or more active bandwidth portions (BWP)) along the frequency axis is illustrated, and the time slot 604 along the time axis is illustrated.

[0100] Figure 6A and Figure 6B The diagram illustrates in-band full-duplex (IBFD) communication, while Figure 6C The diagram illustrates sub-band FDD (or sub-band full-duplex (SBFD)) communication. For IBFD communication, as... Figure 6A and Figure 6B As shown, downlink and uplink transmissions occur on the same time and frequency resources. For example, downlink resource 606 allocated for downlink transmissions overlaps with uplink resource 608 allocated for uplink transmissions in both time and frequency. This overlap can be complete (e.g., ...). Figure 6A (as shown) or incomplete (such as) Figure 6B (As shown).

[0101] For sub-band FDD communication, such as Figure 6CAs shown, the carrier bandwidth 602 (or active BWP) can be divided into sub-bands 610a and 610b. Each sub-band 610a and 610b can be allocated for communication in a single direction. For example, sub-band 610a can be allocated for downlink transmission, while sub-band 610b can be allocated for uplink transmission. For example, downlink resource 606 allocated for downlink transmission overlaps in time with uplink resource 608 allocated for uplink transmission, but not in frequency. Downlink resource 606 can also be separated from uplink resource 608 in the frequency domain by guard band 612 to isolate uplink and downlink transmissions in frequency.

[0102] Figure 7A The diagram illustrates a base station 702 (e.g., a gNB) that includes an antenna array 700 configured for full-duplex communication. The antenna array 700 is divided into two panels (panel 0 704, panel 1 706) with a physical separation 708 between them. Each of the two panels can be a subarray of antennas. A given panel can transmit and / or receive beams or beam groups. In one example, the panels can be physically separated from each other by a distance chosen to provide improved isolation between simultaneous transmit (Tx) and receive (Rx) operations in full-duplex mode, thereby mitigating at least a portion of the self-interference caused by simultaneous transmit / receive signals. A multi-panel antenna configuration with antenna panels located in disparate positions can also be applied to the UE to enable full-duplex communication at the UE.

[0103] Figure 7B It is based on the use of certain aspects. Figure 7A A schematic diagram illustrating an example of sub-band full-duplex wireless communication 710 of the multi-panel antenna array 700 shown. Figure 7B In the example shown, time is in the horizontal direction, in units of time slots 712a-712d, each time slot comprising multiple OFDM symbols; and frequency is in the vertical direction. Here, the carrier bandwidth 714 (or a set of one or more active BWPs) along the frequency axis is illustrated. The carrier bandwidth 714 (or active BWPs) can be divided into several sub-bands 750a-750c for sub-band FDD full-duplex operation.

[0104] exist Figure 7BIn the example shown, in time slot 712a, antenna array 700 is initially configured for downlink (DL) communication (e.g., DL burst 716 and DL data portion 718). DL burst 716 may include DL control transmitted within the first few symbols of time slot 712a. DL burst 716 may include, for example, a Physical Downlink Control Channel (PDCCH) carrying a DCI, which may be associated with time slot 712a or a time slot before or after it. In one example, the DCI may include a common DCI or a UE-specific DCI. A common DCI may include, for example, common control information broadcast to a group of UEs in the cell or to all UEs. A UE-specific DCI may include, for example, HARQ feedback information (e.g., ACK / NACK), scheduling information for scheduling downlink data transmission and / or uplink transmission in time slots 712a or later (e.g., time slots 712b, 712c, and / or 712d), and other suitable information. DL burst 716 may also include various DL reference signals (e.g., SSB and / or CSI-RS). In this example, both panel 0 704 and panel 1 706 can be configured for DL ​​transmission. The DL data section 718 may include, for example, DL data carried within the PDSCH. In addition to DL data, the DL data section 718 may also include a DL reference signal (e.g., DMRS) used during demodulation and decoding of the DL data.

[0105] Time slot 712a may also include a common uplink (UL) burst 722 at the end of time slot 712a. The common UL burst 722 may include, for example, a PUCCH carrying uplink control information (UCI) and other UL signals. Figure 7B As illustrated, the end of the DL data portion 718 can be temporally separated from the beginning of the UL burst 722. This temporal separation 720 may sometimes be referred to as a gap, protection period, protection interval, and / or various other suitable terms. This separation provides the base station and UE with time to perform a handover between transmission and reception, and vice versa. In this example, both panel 0 704 and panel 1706 can be configured for UL transmission during the UL burst 722.

[0106] In time slots 712b and 712c, antenna array 700 is configured for both DL and UL communication. For example, in time slots 712b and 712c, carrier bandwidth 714 (or active BWP) is shown as being divided between uplink and downlink transmissions. Subbands 750a and 750b are allocated for downlink transmissions, while subband 750c is allocated for uplink transmissions. In an example operation of the subband full-duplex (SBFD) configuration shown in Figure 7, panel 0 704 can be configured for DL ​​transmissions at the two edges of carrier bandwidth 714 (or active BWP) (e.g., subbands 750a and 750b), and panel 1 706 can be configured for UL receptions in the middle of carrier bandwidth 714 (or active BWP) (e.g., subband 750c).

[0107] In each of SBFD time slots 712b and 712c, DL subbands 750a and 750b respectively include DL bursts 724 and 734 in the opening portions of time slots 712b and 712c, which may include a PDCCH carrying a DCI and / or DL ​​reference signal. Following DL bursts 724 and 734, time slots 712b and 712c each include DL data portions 726 and 736 for transmitting DL data within subbands 750a and 750b, respectively. For example, DL data may be transmitted within a PDSCH. In addition to DL data, DL data portions 726 and 736 may also include a DL reference signal (e.g., DMRS) for use during demodulation and decoding of the DL data.

[0108] In the uplink (UL) subband 750c, time slots 712b and 712c each include UL data portions 728 and 738 for transmitting UL data. For example, UL data may be transmitted within a PUSCH. Following the UL data portions 728 and 738, the UL subbands 750c of time slots 712b and 712c each include UL bursts 730 and 740. UL bursts 730 and 740 may include, for example, a PUCCH containing UCI and / or other UL signals. A guard band 732 is also provided between the UL subband 750c and the DL subbands 750a and 750b to mitigate self-interference between simultaneous DL transmissions in the DL subbands 750a and 750b and UL transmissions in the UL subband 750c.

[0109] Time slots 712b and 712c are SBFD time slots that utilize FDM for frequency multiplexing of uplink and downlink transmissions. The SBFD time slot configuration shown in Figure 7 is merely exemplary, and other configurations of SBFD time slots can be utilized in various aspects of this disclosure. For example, other configurations of SBFD time slots including UL and DL sub-bands can be employed in various aspects (e.g., Figure 6C The configuration shown Figure 6A and Figure 6B (The IBFD configuration shown or other suitable full-duplex configuration).

[0110] In time slot 712d, antenna array 700 is configured for UL communication. For example, time slot 712d includes a UL data portion 742 followed by a UL burst 744. As discussed above, UL data portion 742 and UL burst 744 may include UL control information and / or UL data. In this example, both panel 0704 and panel 1 706 can be configured for UL reception. Time slots 712a and 712d are half-duplex TDD time slots utilizing TDM for time multiplexing of DL and UL transmissions.

[0111] In some aspects of this disclosure, one or more time slots may be flexible time slots comprising one or more flexible symbols that can be configured as half-duplex symbols (e.g., full UL or full DL) or full-duplex symbols (e.g., including both UL and DL transmissions). For example, in time slot 712b, DL burst 724 may be configured to occupy all sub-bands 750a-750c of time slot 712b, and thus, the symbol corresponding to DL burst 724 may be a flexible symbol that can be configured as a half-duplex symbol to enable DL communication on all sub-bands 750a-750c. Similarly, UL burst 730 may be configured to occupy all sub-bands 750a-750c of time slot 712b, and thus, the symbol corresponding to UL burst 730 may be a flexible symbol that can be configured as a half-duplex symbol to enable UL communication on all sub-bands 750a-750c.

[0112] In SBFD operation, time slot formats can be classified according to the duplex mode of the base station. For example, time slots can be classified as half-duplex time slots (e.g., time slot 712a or 712b), including symbols specifically used for TDM-based DL or UL transmissions. Furthermore, time slots can be classified as full-duplex (or sub-band full-duplex) time slots (e.g., time slot 712b or 712c), including a mix of FDM-based DL and UL transmissions. Time slots can also be classified as flexible time slots, which can be partially or fully configurable (e.g., one or more symbols can be flexible symbols).

[0113] As discussed above, a base station may include an antenna array divided into multiple antenna panels. In full-duplex mode, the base station may configure a first antenna panel for downlink transmission and a second antenna panel separate from the first antenna panel for uplink reception. The first and second antenna panels may be physically separated to avoid or reduce interference. When the antenna panels are physically separated, the first channel associated with the first antenna panel may have different characteristics than the second channel associated with the second antenna panel. In TDD mode, the first and second antenna panels may be used for uplink reception or downlink transmission. Furthermore, due to differences in the number of antenna ports and total power, the channels in TDD mode may differ from those used in full-duplex mode, such as SBFD mode, IBFD mode, or FDD in paired spectrum.

[0114] Figure 8 Figure 800 illustrates an example of communication between a multi-panel base station and a UE. Figure 8 In this configuration, base station 802 (e.g., gNB) can communicate with UE 812. Base station 802 includes two antenna panels (panel 0 804, panel 1 806) with a physical separation 808 between them. In one aspect, base station 802 may correspond to base station 702 in FIG. 7. In full-duplex mode, for example, panel 0 804 is configured as a transmitting panel for downlink transmission, and panel 1 806 is configured as a receiving panel for uplink reception. Because panel 0 804 is configured for downlink transmission, a downlink beam 832 oriented from panel 0 804 can be used for communication with UE 812. Furthermore, because panel 1 806 is configured for uplink reception, an uplink beam 834 oriented towards panel 1 806 can be used for communication with UE 812. Figure 8 As shown, the beam direction of the downlink beam 832 from panel 0 804 is different from the beam direction of the uplink beam 834 towards panel 1 806 because panels 0 804 and 1 806 are positioned separately from each other. Furthermore, as... Figure 8 As shown, during full-duplex mode, downlink communication 852 on downlink beam 832 and uplink communication 854 on uplink beam 834 can occur simultaneously.

[0115] During full-duplex operation, the base station can perform panel switching, which involves switching the configuration of at least one antenna panel between transmit and receive configurations. For example, in Figure 8 In this configuration, panel 0804 can switch from transmit configuration to receive configuration, and panel 806 can switch from receive configuration to transmit configuration. When a panel switch occurs, uplink beam mapping and channel reciprocity may need to be updated.

[0116] Figure 9A and Figure 9B This is an example diagram illustrating multiple panels in a multi-panel base station operating in various modes under two different scenarios. Figure 9A This is an example diagram 900 illustrating multiple panels in a multi-panel base station, where the first antenna panel is in receive configuration and the second antenna panel is in transmit configuration, both in SBFD mode. Figure 9A As shown, when operating in SBFD mode 910, panel 1 (e.g., the top panel) is in receive (Rx) configuration mode, and panel 0 (e.g., the bottom panel) is in transmit (Tx) configuration mode, and therefore transmit and receive can be performed simultaneously. To facilitate panel handover, the base station can receive the corresponding SRS on each panel and obtain the channel state information (CSI) for each panel individually. Therefore, the number of SRS resources used for receiving SRS can be duplicated (e.g., one SRS resource for panel 1 and another SRS resource for panel 2). For example, as Figure 9A As shown, panel 1 can use the first SRS symbol 942 to receive an SRS while panel 0 is not used, and panel 0 can use the second SRS symbol 944 to receive another SRS while panel 1 is not used. The SRS received from panel 1 and the SRS received from panel 0 can be combined for dual-panel uplink CSI acquisition.

[0117] Based on individually received SRS, the base station can estimate the corresponding channel between the UE and the base station for each panel and determine the corresponding uplink beam for each panel. For panel 1, based on the channel reciprocity between downlink and uplink, the base station can also determine the downlink beam to be used on panel 1 from the SRS transmitted on SRS symbol 942. Furthermore, for panel 0, based on the channel reciprocity between downlink and uplink, the base station can determine the downlink beam to be used on panel 0 from the SRS transmitted on SRS symbol 944. For example, the downlink beam on each panel can correspond to the corresponding uplink beam selected for each panel based on the SRS. Therefore, using separate SRS symbols for each panel enables improved channel estimation quality and beam selection. Furthermore, each SRS resource can be configured for the entire frequency band instead of a narrower uplink sub-band to further improve channel estimation quality and beam selection.

[0118] Figure 9B This is an example diagram 950 illustrating multiple panels in a multi-panel base station, where a first antenna panel (e.g., the top panel) is in transmit configuration and a second antenna panel (e.g., the bottom panel) is in receive configuration, both in SBFD mode. Figure 9BAs shown, when operating in SBFD mode 960, panel 0 (e.g., the top panel) is in receive (Rx) configuration mode, and panel 1 (e.g., the bottom panel) is in transmit (Tx) configuration mode, and therefore transmit and receive can be performed simultaneously. To facilitate panel switching, at 970, the base station can receive the corresponding SRS and obtain the channel state information (CSI) for each panel individually. Figure 9B In the middle, at 970, panel 0 can use the first SRS symbol 992 to receive an SRS while panel 1 is not used, and panel 1 can use the second SRS symbol 994 to receive another SRS while panel 0 is not used.

[0119] Figure 10 Figure 1000 illustrates an example of a multi-panel base station in TDD mode. Figure 10 In the transmit or receive configuration, the panel is used for transmission configuration. When in transmit configuration, the CSI and downlink beam for downlink communication can be obtained by transmitting a downlink reference signal (e.g., SSB or CSI-RS) to the UE, which can then report the CSI to the base station. Furthermore, when in receive configuration, the CSI and uplink beam for uplink communication can be obtained by receiving and measuring the uplink reference signal (e.g., SRS) from the UE. Figure 10 In the example shown, the downlink and uplink channels are reciprocal, and therefore, panels 0 and 1 are not treated separately when estimating the channels.

[0120] exist Figure 10 In the TDD mode 1010, panels 0 and 1 are in transmit configuration, where downlink signals can be received in the transmit path and can be split across panels 0 and 1. Downlink signals can be transmitted using downlink symbol 1052. In the TDD mode 1020, panels 0 and 1 are in receive configuration, where uplink signals can be received via panels 0 and 1 and then combined. Uplink signals can be received using uplink symbol 1056. Guard symbol 1054 can be present between downlink symbol 1052 and uplink symbol 1056. To estimate the channel using uplink measurements, at 1030, panels 0 and 1 can be in receive configuration to receive SRS via panels 0 and 1. SRS can be received, for example, using SRS symbol 1058.

[0121] Panel switching can be performed to switch the configuration of different antenna panels between different modes. For example, when switching between SBFD and TDD modes, the configuration of one or more antenna panels can be switched between transmit and receive configurations. In SBFD mode, the uplink CSI can be different for each antenna panel. For each antenna panel in receive configuration, a specific uplink spatial filter for a specific beam is determined. Furthermore, the uplink and downlink reciprocity in TDD mode can differ from that in SBFD mode because the channel in TDD mode is estimated for all antenna panels, while the channel in SBFD mode can be estimated for only one antenna panel. To account for different channel reciprocities and beams, the UE may need to be informed of the base station's antenna panel configuration. For example, the UE may need to know whether the base station has a single antenna panel or multiple antenna panels, and may also need to know information about the antenna panel configuration of the base station's antenna panels, such as whether the antenna panels are in uplink or downlink configuration. Additionally, the UE may need to know which antenna panel(s) of the base station are configured for communication with the UE.

[0122] According to some aspects of this disclosure, a base station having multiple antenna panels can indicate to a UE that the base station has multiple antenna panels by providing indicators that each indicator identifies a corresponding antenna panel. In this way, the UE can know the antenna panels of the base station and therefore adjust its configuration (e.g., beam selection) based on which antenna panel of the base station is communicating with the UE (e.g., based on the indicator). The UE can be... Figure 1 , Figure 2 , Figure 4 Figure 7 and Figure 8 The UE or scheduled entity shown in the diagram can be a base station. Figure 1 , Figure 2 , Figure 4 Figure 7 and Figure 8 The diagram illustrates a base station, gNB, and scheduling entity. In one aspect, based on indicators provided by the base station, the UE can determine which antenna panels to communicate with. These indicators may include panel identifiers that identify multiple antenna panels, uplink spatial filters corresponding to each antenna panel, and / or Transmission Configuration Indication (TCI) states corresponding to each antenna panel.

[0123] In one aspect, the base station can identify one or more SRS resources (e.g., in an SRS resource set) such that each SRS resource is associated with at least one indicator that identifies at least one antenna panel of the base station. These one or more SRS resources identified by the base station can be indicated by resource information sent to the UE. For example, the base station can send resource information indicating one or more SRS resources by sending an SRS resource configuration of one or more SRS resources. In this way, the UE can determine which antenna panels to communicate with based on the indicator. Furthermore, the UE can determine which SRS resource to utilize to send a specific SRS to a specific antenna panel based on the resource information from the base station and the one or more SRS resources indicated by the indicator provided by the base station.

[0124] In one aspect, the base station can provide the indicator to the UE in a static manner, for example, via an RRC message including RRC configuration. For example, SRS resource configuration of one or more SRS resources including the indicator can be sent via an RRC message, wherein the RRC configuration in the RRC message may include SRS resource configuration.

[0125] In one aspect, one or more SRS resources can be identified by the base station for each SRS usage. SRS usage may include one or more of codebook usage, non-codebook usage, antenna switching, beam management, or beam / transmission positioning based on at least one SRS. In another aspect, one or more SRS resources can be identified by the base station for each SRS type. SRS types may include one or more of periodic SRS types, semi-persistent SRS types, and / or aperiodic SRS types. Thus, for example, one or more SRS resources may be identified for a periodic SRS type, a semi-persistent SRS type, and / or an aperiodic SRS type.

[0126] In one aspect, during the UE beam refinement procedure, the base station can transmit downlink reference signals on each antenna panel of the base station, for example, via a corresponding downlink reference signal beam on the base station. The UE can receive the downlink reference signals via multiple UE beams, where each downlink reference signal is associated with a corresponding indicator for a specific antenna panel. For example, the indicator identifying the antenna panel used for the downlink reference signal can be provided via an RRC message. When the UE receives the downlink reference signal, the UE can determine which antenna panel is used to transmit the downlink reference signal based on the corresponding indicator associated with the downlink reference signal (e.g., using beam correspondence). The UE can then select the corresponding UE beam for each downlink reference signal beam to form a corresponding beam pair link (BPL) for each antenna panel. As discussed above, the indicator can be a panel identifier, an uplink spatial filter, and / or a TCI state. Each downlink reference signal may include an SSB and / or a CSI-RS.

[0127] In one aspect, the base station can provide indicators to the UE dynamically, for example, in response to specific events and / or conditions. For instance, the base station can provide indicators when a panel handover and / or configuration change associated with an antenna panel occurs, as this event should be indicated to the UE so that the UE can make appropriate adjustments. In another aspect, the base station can send an SRS resource configuration including indicators for one or more SRS resources when a panel handover and / or configuration change associated with an antenna panel occurs. In another aspect, the SRS resource configuration can be sent via a message for updating the RRC configuration. In another aspect, the message for updating the RRC configuration can be MAC-CE. In another aspect, the dynamic provision of indicators can occur after the static provision of indicators (e.g., after RRC configuration).

[0128] In one aspect, if the base station configures multiple SRS resources for the UE, a panel indicator can be included in each of the multiple SRS resources, such that there is a one-to-one mapping between the indicator and the SRS resource. For example, each SRS resource may include a single indicator for a single panel. As discussed above, the indicator may include a panel identifier, TCI status, and / or uplink spatial filter.

[0129] In one aspect, when SRS resources are reused, each use of an SRS resource can correspond to a different antenna panel. Therefore, each use of an SRS resource can be associated with its own indicator for a specific antenna panel. For example, a single SRS resource can be used with one or more repetitions of a single SRS resource, wherein each use of a single SRS resource can be associated with a corresponding indicator in at least one indicator identifying the corresponding antenna panel. For example, a first SRS transmission using an SRS resource can be used for a first antenna panel, a first repetition of an SRS transmission using the same SRS resource can be used for a second antenna panel, and a second repetition of an SRS transmission using the same SRS resource can be used for a third antenna panel. In this example, the SRS resource can be associated with three UL panel IDs and / or three TCI states, wherein a first UL panel ID and / or a first TCI state is associated with a first SRS transmission, a second UL panel ID and / or a second TCI state is associated with a second SRS transmission, and a third UL panel ID and / or a third TCI state is associated with a third SRS transmission.

[0130] In one aspect, the order or arrangement of multiple SRS resources within an SRS resource set and / or the order or arrangement of multiple antenna panels can determine the mapping between the multiple SRS resources and the multiple antenna panels, such that the SRS resources can be used to implicitly indicate the corresponding antenna panel (e.g., based on the order of the SRS resources). For example, if the SRS resource set has two SRS resources, the first SRS resource can be used for the first antenna panel, and the second SRS resource can be used for the second antenna panel.

[0131] When a UE receives resource information from a base station indicating one or more SRS resources, the UE can transmit SRSs individually toward the target antenna panel of the base station. In one aspect, the UE can transmit SRSs individually toward the base station's antenna panel based on an indicator associated with the SRS resource used for the SRS. For example, each SRS transmitted by the UE can be directed to a specific antenna panel based on a corresponding indicator. The UE can transmit SRSs on one or more SRS resources identified by the base station and sent to the UE.

[0132] When a UE receives a downlink signal from a certain direction, it can utilize the transmit beam in the same direction for uplink transmission, which may be a reliable approach for TDD mode. However, in full-duplex mode, this approach may be unreliable because different panels are used for downlink and uplink communication. Therefore, in one aspect, when operating in full-duplex mode (e.g., SBFD), the base station can indicate to the UE the downlink TCI state corresponding to the beam of a first antenna panel in the base station's antenna panels, and can also indicate to the UE the uplink TCI state and / or uplink spatial filter corresponding to the beam of a second antenna panel in the base station's antenna panels. For example, the indicator sent to the UE may include the downlink TCI state associated with downlink channel reception from the first antenna panel, and may also include the uplink TCI state and / or uplink spatial filter associated with uplink channel transmission to the second antenna panel. According to one option, a single TCI code point may be used to indicate at least one of the downlink TCI state, the uplink TCI state, or the uplink spatial filter. For example, the base station may send a single TCI code point to the UE, wherein the TCI state is indicated as an indicator via a single TCI code point indicating the downlink TCI state, and the uplink TCI state and / or the uplink spatial filter. Alternatively, two separate TCI code points may be used, one indicating the downlink TCI state and the other indicating at least one of the uplink TCI state or the uplink spatial filter. For example, the base station may send a first code point and a second code point, wherein the TCI state is indicated as an indicator via a first TCI code point indicating the downlink TCI state and a second TCI code point indicating at least one of the uplink TCI state or the uplink spatial filter.

[0133] In one aspect, a time gap called guard time can be introduced between the SRS resources prior to panel handover by the base station and the SRS resources after panel handover to allow sufficient time for the handover to complete. In another aspect, guard time is not required if the panel handover can be completed within a cyclic prefix. For example, in TDD mode, when panel handover involves the base station performing a fallback from a dual-panel configuration using two antenna panels to a single-panel configuration using one antenna panel, guard time is not required if this panel handover can be completed within a cyclic prefix. In this aspect, SRS resources including different indicators identifying different antenna panels of the base station can be located within consecutive symbols, with no guard time between SRS resources (e.g., no guard symbols).

[0134] Figure 11AFigure 1100 illustrates an example SRS resource without introduced protection symbols, according to some aspects of this disclosure. Figure 11A In this context, time resource 1110 includes a first SRS resource 1112 before panel switching and a second SRS resource 1114 after panel switching, wherein panel switching can be completed within a loop prefix. Figure 11A In the example, the first SRS resource 1112 and the second SRS resource 1114 are located within consecutive symbols, and there are no guard symbols between the first SRS resource 1112 and the second SRS resource 1114.

[0135] In one aspect, a guard time may be required when panel switching cannot be completed within a cyclic prefix. For example, if panel switching involves switching an antenna panel between a transmit configuration and a receive configuration, this may require more time, and therefore a guard time (e.g., guard symbols) can be introduced to allow sufficient time to complete the panel switching. In this aspect, consecutive SRS resources, including different indicators identifying different antenna panels of a base station, can be separated by at least one guard symbol. In this aspect, the number of guard symbols to be introduced between consecutive SRS resources is determined based on at least one of subcarrier spacing or frequency range (e.g., depending on whether FR1 or FR2 is used). For example, a table can be used to look up the number of guard symbols, where the table provides different numbers of guard symbols for different subcarrier spacing values. One table for FR1 and another table for FR2 can be determined.

[0136] Figure 11B Figure 1150 illustrates an example SRS resource incorporating a guard symbol according to some aspects of this disclosure. In Figure 1150, time resource 1160 includes a first SRS resource 1162 prior to panel switching and a second SRS resource 1164 after panel switching, with a guard symbol 1166 between the first SRS resource 1162 and the second SRS resource 1164, wherein panel switching cannot be completed within a loop prefix.

[0137] In one aspect, the base station can indicate to the UE which antenna panel of the base station is in transmit configuration and which antenna panel is in receive configuration. For example, the base station can send communication configurations associated with antenna panels of the base station, each of which indicates a transmit or receive configuration associated with a corresponding antenna panel in the antenna panel. In another aspect, the antenna panel may include one or more antenna panels for transmitting or receiving in TDD mode, wherein the communication configuration may be determined based on the TDD mode.

[0138] Figure 12ATwo example figures 1200 and 1230 are shown illustrating a base station in TDD mode according to some aspects of this disclosure. Figure 12A In the first Figure 1200, a single antenna panel is used in TDD mode to perform transmission and reception at different times (e.g., different symbols or time slots). As shown in the first Figure 1200, when in TDD mode 1210 for transmission, panel 0 (e.g., the top panel) is in the transmit (Tx) configuration. Furthermore, in the first Figure 1200, when in TDD mode 1220 for reception, panel 0 is in the receive (Rx) configuration. Figure 12A In the second figure 1230, two antenna panels are used to perform transmission and reception in TDD mode. As shown in the second figure 1230, when in TDD mode 1240 for transmission, panel 0 (e.g., the top panel) and panel 1 (e.g., the bottom panel) are in the transmit (Tx) configuration. Furthermore, in the second figure 1230, when in TDD mode 1250 for reception, panel 0 and panel 1 are in the receive (Rx) configuration.

[0139] In one aspect, the antenna panel may include at least one antenna panel for transmitting in full-duplex mode and at least one antenna panel for receiving, wherein the communication configuration may be determined based on the full-duplex mode. Figure 12B Example Figure 1260 illustrates a base station in SBFD mode according to some aspects of this disclosure. For example... Figure 12B As shown in the example figure 1260, when in SBFD mode 1270, panel 0 (e.g., top panel) is in transmit (Tx) configuration and panel 1 (e.g., bottom panel) is in receive (Rx) configuration.

[0140] Figure 13 This is a conceptual diagram illustrating an example hardware implementation of an exemplary base station 1300 employing the processing system 1314. For example, base station 1300 could be, for instance... Figure 1 , Figure 2 , Figure 4 Figure 7 Figure 8 Figure 9 Figure 10 And / or any one or more of the gNBs or other scheduling entities illustrated in Figure 12.

[0141] Base station 1300 may be implemented using a processing system 1314 including one or more processors 1304. Examples of processors 1304 include microprocessors, microcontrollers, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuitry, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. In various examples, base station 1300 may be configured to perform any one or more of the functions described herein. That is, the processor 1304 utilized in base station 1300 may be used to implement any one or more of the processes described below. In some instances, processor 1304 may be implemented via a baseband or modem chip, and in other implementations, processor 1304 itself may include several devices distinct from and different from the baseband or modem chip (e.g., in a scenario where they can work together to implement the embodiments discussed herein). And as mentioned above, various hardware arrangements and components other than the baseband modem processor may be used in implementations including RF chains, power amplifiers, modulators, buffers, interleavers, adders / summers, etc.

[0142] In this example, the processing system 1314 can be implemented with a bus architecture typically represented by bus 1302. Depending on the specific application and overall design constraints of the processing system 1314, bus 1302 may include any number of interconnect buses and bridges. Bus 1302 communicatively couples various circuits together, including one or more processors (typically represented by processing circuitry 1304), memory 1305, and computer-readable media (typically represented by computer-readable storage media 1306).

[0143] Bus 1302 can also link various other circuits, such as timing sources, peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further. Bus interface 1308 provides an interface between bus 1302 and transceiver 1310. Transceiver 1310 provides components for communicating with various other devices via a transmission medium (e.g., an air interface) using antenna arrays 1320 (e.g., each including one or more antenna boards). A user interface 1312 (e.g., a keyboard, display, touchscreen, speaker, microphone, control knob, etc.) may also be provided. Of course, this user interface 1312 is optional and may be omitted in some examples.

[0144] Processor 1304 is responsible for managing bus 1302 and general processing, including the execution of software stored on computer-readable storage medium 1306. When executed by processor 1304, this software causes processing system 1314 to perform various functions described below for any particular device. Computer-readable storage medium 1306 and memory 1305 can also be used to store data manipulated by processor 1304 during software execution.

[0145] One or more processors 1304 in the processing system can execute software. Software should be interpreted broadly as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or others. Software may reside on computer-readable storage medium 1306.

[0146] Computer-readable storage medium 1306 may be a non-transitory computer-readable storage medium. Non-transitory computer-readable storage media include, for example, magnetic storage devices (e.g., hard disks, floppy disks, magnetic stripes), optical disks (e.g., compact discs (CDs) or digital multifunction discs (DVDs)), smart cards, flash memory devices (e.g., cards, sticks, or key drives), random access memory (RAM), read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), registers, removable disks, and any other suitable medium for storing software and / or instructions that can be accessed and read by a computer. Computer-readable storage media may also include, for example, carrier waves, transmission lines, and any other suitable medium for transmitting software and / or instructions that can be accessed and read by a computer. Computer-readable storage medium 1306 may reside in processing system 1314, be external to processing system 1314, or be distributed across multiple entities including processing system 1314. Computer-readable storage medium 1306 may be embodied in a computer program product. In some examples, computer-readable storage medium 1306 may be part of memory 1305. For example, a computer program product may include a computer-readable storage medium within packaging material. Those skilled in the art will recognize that how best to implement the functionality described throughout this disclosure depends on the specific application and the overall design constraints imposed on the system.

[0147] In some aspects of this disclosure, processor 1304 may include circuitry configured for various functions. For example, processor 1304 may include indicator management circuitry 1342 and communication management circuitry 1344, configured for various functions, including, for example, sending to the UE multiple indicators identifying multiple antenna panels on a base station, wherein each of the multiple indicators identifies a corresponding panel among the multiple antenna panels. For example, indicator management circuitry 1342 and communication management circuitry 1344 may be configured to implement the following description... Figures 14 to 15 One or more of the functions described include, for example, boxes 1402 and 1502. The indicator management circuitry 1342 and the communication management circuitry 1344 can also be configured to execute the indicator management software / instructions 1352 and the communication management software / instructions 1354 stored in the computer-readable storage medium 1306 to perform the following... Figures 14 to 15 One or more of the functions described, including, for example, boxes 1402 and 1504.

[0148] In some aspects of this disclosure, processor 1304 may include communication management circuitry 1344 configured for various functions, including, for example, communicating with the UE based on multiple indicators of multiple antenna panels. For example, communication management circuitry 1344 may be configured to implement the following description... Figures 14 to 15 One or more of the functions described include, for example, boxes 1404 and 1506. The communication management circuitry 1344 can also be configured to execute communication management software / instructions 1354 stored in the computer-readable storage medium 1306 to perform the following... Figures 14 to 15 One or more of the functions described, including, for example, boxes 1404 and 1506.

[0149] In some aspects of this disclosure, the communication management circuitry 1344 can be configured for various functions, including, for example, receiving multiple SRS from the UE via multiple antenna panels on one or more SRS resources. For example, the communication management circuitry 1344 can be configured to implement the following description... Figure 15 One or more of the functions described include, for example, block 1508. The communication management circuitry 1344 can also be configured to execute communication management software / instructions 1354 stored in the computer-readable storage medium 1306 to perform the following description... Figure 15 One or more of the functions described, including, for example, box 1508.

[0150] In some aspects of this disclosure, processor 1304 may include resource management circuitry 1346 configured for various functions, including, for example, identifying one or more sounding reference signal (SRS) resources. For example, resource management circuitry 1346 may be configured to implement the following description... Figure 15 One or more of the functions described include, for example, block 1502. Resource management circuitry 1346 can also be configured to execute resource management software / instructions 1356 stored in computer-readable storage medium 1306 to perform the following... Figure 15 One or more of the functions described, including, for example, box 1502.

[0151] In some aspects of this disclosure, processor 1304 may include communication configuration circuitry 1348 configured for various functions, including, for example, sending to the UE multiple indicators that respectively identify multiple antenna panels. For example, communication configuration circuitry 1348 may be configured to implement the following description... Figure 15 One or more of the functions described include, for example, block 1510. The communication configuration circuitry 1348 can also be configured to execute the communication configuration software / instructions 1358 stored in the computer-readable storage medium 1306 to perform the following... Figure 15 One or more of the functions described, including, for example, box 1510.

[0152] Figure 14 This is a flowchart 1400 of a method for wireless communication performed by a base station according to some aspects. As described below, in certain implementations within the scope of this disclosure, some or all of the illustrated features may be omitted, and some illustrated features may be claimed for use in all implementations of the embodiments. In some examples, the method may be as described above and... Figure 13 The functions described herein are performed by the base station 1300 shown in the diagram, by a processor or processing system, or by any suitable component used to implement the functions described.

[0153] At box 1402, the base station can determine multiple indicators that identify multiple antenna panels on the base station, wherein each of the multiple indicators identifies a corresponding antenna panel among the multiple antenna panels. For example, in conjunction with the above... Figure 13 The indicator management circuit 1342 shown and described can provide components for determining multiple indicators.

[0154] At box 1404, the base station can send multiple indicators to the UE, each identifying a different antenna panel. For example, in conjunction with the above... Figure 13 The communication management circuit 1344 shown and described can provide components for sending multiple indicators.

[0155] In one configuration, base station 1300 (such as gNB) includes functions for performing... Figure 14 The components described are various functions and processes. In one aspect, the aforementioned components may be... Figure 13 The processor 1304 shown is configured to perform the functions listed by the foregoing components. In another aspect, the foregoing components may be a circuit or any device configured to perform the functions listed by the foregoing components.

[0156] Of course, in the above example, the circuitry included in processor 1304 is provided merely as an example, and other components for implementing the described functions may be included within various aspects of this disclosure, including but not limited to instructions stored in computer-readable storage medium 1306, or in Figure 1 , Figure 2 , Figure 4 Figure 7 Figure 8 Figure 9 Figure 10 and / or any of the figures described in Figure 12 and utilizing, for example, the information presented herein. Figure 14 Any other suitable device or component of the described process and / or algorithm.

[0157] Figure 15 This is a flowchart 1500 of a method for wireless communication performed by a base station according to some aspects. As described below, in certain implementations within the scope of this disclosure, some or all of the illustrated features may be omitted, and some illustrated features may be claimed for all implementations of the embodiments. In some examples, the method may be as described above and... Figure 13 The functions described herein are performed by the base station 1300 shown in the diagram, by a processor or processing system, or by any suitable component used to implement the functions described.

[0158] At box 1502, the base station can identify one or more SRS resources. For example, in conjunction with the above... Figure 13 The resource management circuit 1346 shown and described can provide a component that identifies one or more SRS resources.

[0159] At box 1504, the base station can send to the UE multiple indicators that identify multiple antenna panels on the base station, wherein each of the multiple indicators identifies a corresponding panel among the multiple antenna panels. For example, in conjunction with the above... Figure 13 The indicator management circuit 1342 and communication management circuit 1344 shown and described can provide components for sending multiple indicators.

[0160] In one aspect, transmitting multiple indicators at block 1506 may include transmitting resource information indicating one or more SRS resources, wherein each of the one or more SRS resources is associated with at least one of multiple indicators identifying at least one corresponding antenna panel among a plurality of antenna panels. For example, in conjunction with the above... Figure 13 The communication management circuit 1344 shown and described can provide a component for transmitting one or more SRS resources.

[0161] At box 1506, the base station can communicate with the UE based on multiple indicators on multiple antenna panels. For example, in conjunction with the above... Figure 13 The communication management circuit 1344 shown and described can provide components for communicating with the UE based on a plurality of indicators.

[0162] At box 1508, the base station can receive multiple SRS from the UE via multiple antenna panels on one or more SRS resources. For example, in conjunction with the above... Figure 13 The communication management circuit 1344 shown and described can provide a component for receiving multiple SRSs.

[0163] In one aspect, the multiple indicators may include multiple panel identifiers that respectively identify multiple antenna panels, multiple uplink spatial filters respectively corresponding to the multiple antenna panels, multiple Transmission Configuration Indication (TCI) states respectively corresponding to the multiple antenna panels, or combinations thereof. In one aspect, the multiple uplink spatial filters respectively indicate multiple downlink reference signal beams respectively corresponding to the multiple antenna panels, and wherein the multiple TCI states respectively indicate multiple downlink reference signal beams respectively corresponding to the multiple antenna panels. In one aspect, the multiple downlink reference signal beams may include multiple synchronization block (SSB) beams or multiple channel state information reference signal (CSI-RS) beams.

[0164] In one aspect, transmitting resource information indicating one or more SRS resources may include transmitting an SRS resource configuration for the one or more SRS resources. In another aspect, the one or more SRS resources may include multiple SRS resources, and the SRS resource configuration may be associated with an SRS resource set, which includes multiple SRS resources respectively associated with multiple antenna panels.

[0165] In one aspect, SRS resource configuration may be transmitted via Radio Resource Control (RRC) messages. In another aspect, identifying one or more SRS resources may include one or more SRS resources identified for at least one of the following: codebook use, non-codebook use, antenna switching, beam management, or at least one SRS for positioning. In yet another aspect, identifying one or more SRS resources may include one or more SRS resources identified for at least one of the following: periodic SRS type, semi-persistent SRS type, or aperiodic SRS type.

[0166] In one aspect, transmitting the SRS resource configuration may include transmitting the SRS resource configuration in response to panel switching of multiple antenna panels. In another aspect, the SRS resource configuration may be transmitted via a message for updating the Radio Resource Control (RRC) configuration. In yet another aspect, the message for updating the RRC configuration may include a Media Access Control (MAC) control element (CE).

[0167] In one aspect, one or more SRS resources may include multiple SRS resources associated with multiple panel identifiers, or multiple TCI states, or multiple uplink spatial filters, or combinations thereof.

[0168] In one aspect, one or more SRS resources may include at least one SRS resource that is reused in a plurality of SRS transmissions, each of the plurality of SRS transmissions using at least one SRS resource associated with a corresponding indicator in at least one indicator that identifies a respective antenna panel in a plurality of antenna panels.

[0169] In one aspect, one or more SRS resources may include multiple SRS resources, each SRS resource including a single corresponding indicator among multiple indicators that identify a single antenna panel among multiple antenna panels.

[0170] In one aspect, panel switching associated with multiple antenna panels can be performed within a cyclic prefix, one or more SRS resources can include multiple SRS resources, and consecutive SRS resources among multiple SRS resources associated with different indicators among multiple indicators that identify different antenna panels among multiple antenna panels can be located within consecutive symbols.

[0171] In one aspect, panel switching associated with multiple antenna panels can be performed over a duration longer than the cyclic prefix. One or more SRS resources may include multiple SRS resources, and consecutive SRS resources among multiple SRS resources associated with different indicators among multiple indicators identifying different antenna panels among the multiple antenna panels can be separated by at least one guard symbol. In another aspect, the time interval for panel switching can be determined by the number of at least one guard symbol, and is determined based on at least one of subcarrier spacing or frequency range.

[0172] In one aspect, the plurality of indicators may include: a downlink TCI state associated with reception from a downlink channel of a first antenna panel among the plurality of antenna panels, and at least one of an uplink TCI state or an uplink spatial filter associated with transmission to an uplink channel of a second antenna panel among the plurality of antenna panels. In one aspect, transmitting the plurality of indicators may include transmitting a single TCI code point indicating the downlink TCI state and at least one of the uplink TCI state or the uplink spatial filter. In one aspect, transmitting the plurality of indicators may include transmitting a first TCI code point indicating the downlink TCI state and a second TCI code point indicating the uplink TCI state or at least one of the uplink spatial filter.

[0173] At box 1510, the base station can transmit multiple communication configurations associated with multiple antenna panels, each of which indicates a transmit or receive configuration associated with a corresponding antenna panel among the multiple antenna panels. For example, in conjunction with the above... Figure 13 The communication management circuit 1344 and communication configuration circuit 1348 shown and described can provide components for transmitting multiple communication configurations.

[0174] In one aspect, the plurality of antenna panels may include one or more antenna panels for transmitting or receiving in time division duplex (TDD) mode, and the plurality of communication configurations are determined based on the TDD mode. In another aspect, the plurality of antenna panels may include at least one antenna panel for transmitting and at least one antenna panel for receiving in full-duplex mode, and the plurality of communication configurations are determined based on the full-duplex mode.

[0175] In one configuration, base station 1300 (such as gNB) includes functions for performing... Figure 15 The components described are various functions and processes. In one aspect, the aforementioned components may be... Figure 13 The processor 1304 shown is configured to perform the functions listed by the foregoing components. In another aspect, the foregoing components may be a circuit or any device configured to perform the functions listed by the foregoing components.

[0176] In one configuration, base station 1300 may include: means for transmitting to a user equipment (UE) a plurality of indicators identifying a plurality of antenna panels on the base station, wherein each of the plurality of indicators identifies a corresponding panel among the plurality of antenna panels; and means for communicating with the UE based on the plurality of indicators of the plurality of antenna panels. In one aspect, base station 1300 may include: means for identifying one or more sounding reference signal (SRS) resources; and means for receiving a plurality of sounding reference signals (SRS) from the UE via the plurality of antenna panels on one or more SRS resources. In another aspect, base station 1300 may include: means for transmitting a plurality of communication configurations respectively associated with the plurality of antenna panels, wherein each of the plurality of communication configurations indicates a transmission configuration or a reception configuration associated with a corresponding antenna panel among the plurality of antenna panels.

[0177] Of course, in the above example, the circuitry included in processor 1304 is provided merely as an example, and other components for implementing the described functions may be included within various aspects of this disclosure, including but not limited to instructions stored in computer-readable storage medium 1306, or in Figure 1 , Figure 2 , Figure 4 Figure 7 Figure 8 Figure 9 Figure 10 and / or any of the figures described in Figure 12 and utilizing, for example, the information presented herein. Figure 15 Any other suitable device or component of the described process and / or algorithm.

[0178] Figure 16 This is a block diagram illustrating an example of a hardware implementation of a UE 1600 employing a processing system 1614. For example, UE 1600 may correspond to the above reference. Figure 1 , Figure 2 , Figure 4 Figure 7 and / or Figure 8 Any of the UEs shown and described or the entities being scheduled.

[0179] According to various aspects of this disclosure, an element, or any part thereof, or any combination thereof, may be implemented using a processing system 1614 comprising one or more processors 1604. The processing system 1614 may be coupled with... Figure 13 The processing system 1314 shown in the diagram is essentially the same, including a bus interface 1608, a bus 1602, a memory 1605, a processor 1604, and a computer-readable storage medium 1606. Furthermore, UE 1600 may include components similar to those described above. Figure 13The user interface 1612 and transceiver 1610 described herein are similar. That is, the processor 1604, as utilized in UE 1600, can be used to implement any one or more of the processes described below.

[0180] In some aspects of this disclosure, processor 1604 may include circuitry configured for various functions. For example, processor 1604 may include communication management circuitry 1642 configured for various functions, including, for example, receiving from a base station configured to communicate via multiple antenna panels, a plurality of indicators respectively identifying the plurality of antenna panels. For example, communication management circuitry 1642 may be configured to implement the following description... Figures 17 to 18 One or more of the functions described include, for example, boxes 1702 and 1802. The communication management circuitry 1642 can also be configured to execute communication management software / instructions 1652 stored in the computer-readable storage medium 1606 to perform the following... Figures 17 to 18 One or more of the functions described, including, for example, boxes 1702 and 1802.

[0181] In some aspects of this disclosure, the communication management circuit 1642 can be configured for various functions, including, for example, transmitting multiple sounding reference signals (SRS) to multiple antenna panels of a base station based on multiple indicators. For example, the communication management circuit 1642 can be configured to implement the following description... Figures 17 to 18 One or more of the functions described include, for example, boxes 1704 and 1808. The communication management circuit 1642 can also be configured to execute communication management software / instructions 1652 stored in the computer-readable storage medium 1606 to perform the following... Figures 17 to 18 One or more of the functions described, including, for example, boxes 1704 and 1808.

[0182] In some aspects of this disclosure, the communication management circuit 1642 can be configured for various functions, including, for example, receiving multiple downlink reference signals via multiple downlink reference signal beams indicated by multiple uplink spatial filters or multiple TCI states. For example, the communication management circuit 1642 can be configured to implement the following description... Figure 18 One or more of the functions described include, for example, block 1804. The communication management circuitry 1642 can also be configured to execute communication management software / instructions 1652 stored in the computer-readable storage medium 1606 to perform the following... Figure 18 One or more of the functions described, including, for example, box 1804.

[0183] In some aspects of this disclosure, the communication management circuit 1642 can be configured for various functions, including, for example, receiving a plurality of communication configurations associated with a plurality of antenna panels, wherein each of the plurality of communication configurations indicates a transmit configuration or receive configuration associated with a corresponding antenna panel among the plurality of antenna panels. For example, the communication management circuit 1642 can be configured to implement the following description Figure 18 One or more of the functions described include, for example, block 1810. The communication management circuitry 1642 can also be configured to execute communication management software / instructions 1652 stored in the computer-readable storage medium 1606 to perform the following... Figure 18 One or more of the functions described, including, for example, box 1810.

[0184] In some aspects of this disclosure, processor 1604 may include beam management circuitry 1644 configured for various functions, including, for example, selecting a plurality of UE beams, wherein each of the plurality of UE beams is selected based on a corresponding downlink reference signal among a plurality of downlink reference signals. For example, beam management circuitry 1644 may be configured to implement the following description... Figure 18 One or more of the functions described include, for example, block 1806. Beam management circuitry 1644 can also be configured to execute beam management software / instructions 1654 stored in computer-readable storage medium 1606 to perform the following description... Figure 18 One or more of the functions described, including, for example, box 1806.

[0185] Figure 17 This is a flowchart 1700 of a method for wireless communication performed by a UE according to some aspects. As described below, in certain implementations within the scope of this disclosure, some or all of the illustrated features may be omitted, and some illustrated features may be claimed for all implementations of all embodiments. In some examples, the method may be as described above and... Figure 16 The UE 1600 shown in the diagram is executed by a processor or processing system, or by any suitable component used to implement the described functions.

[0186] At box 1702, the UE can receive multiple indicators, each identifying a different antenna panel, from a base station configured to communicate via multiple antenna panels. For example, as described above... Figure 16 The communication management circuit 1642 shown and described may provide a component for receiving multiple indicators.

[0187] At box 1704, the UE can send multiple SRSs to multiple antenna panels of the base station based on multiple indicators. For example, in conjunction with the above... Figure 16The communication management circuit 1642 shown and described can provide components for transmitting multiple SRSs.

[0188] In one configuration, UE 1600 includes features for performing operations related to... Figure 17 The components described are various functions and processes. In one aspect, the aforementioned components may be... Figure 16 The processor 1604 shown is configured to perform the functions listed above. Alternatively, the aforementioned components may be circuitry or any device configured to perform the functions listed above.

[0189] Of course, in the above example, the circuitry included in processor 1604 is provided merely as an example, and other components for implementing the described functions may be included within various aspects of this disclosure, including but not limited to instructions stored in computer-readable storage medium 1606, or in Figure 1 , Figure 2 , Figure 4 Figure 7 and / or Figure 8 Any of the descriptions in and using, for example, this article about Figure 17 Any other suitable device or component of the described process and / or algorithm.

[0190] Figure 18 This is a flowchart 1800 of a method for wireless communication performed by a UE according to some aspects. As described below, in certain implementations within the scope of this disclosure, some or all of the illustrated features may be omitted, and some illustrated features may be claimed for all implementations of all embodiments. In some examples, the method may be as described above and... Figure 16 The UE 1600 shown in the diagram is executed by a processor or processing system, or by any suitable component used to implement the described functions.

[0191] At box 1802, the UE can receive multiple indicators, each identifying a different antenna panel, from a base station configured to communicate via multiple antenna panels. For example, as described above... Figure 16 The communication management circuit 1642 shown and described may provide a component for receiving multiple indicators.

[0192] In one aspect, receiving multiple indicators at block 1802 may include receiving resource information from a base station indicating one or more SRS resources, wherein each of the one or more SRS resources is associated with at least one of multiple indicators that identify at least one corresponding antenna panel among a plurality of antenna panels.

[0193] In one aspect, the multiple indicators may include multiple panel identifiers that identify multiple antenna panels, multiple uplink spatial filters that correspond to multiple antenna panels, multiple transmission configuration indication (TCI) states that correspond to multiple antenna panels, or combinations thereof.

[0194] At box 1804, the UE can receive multiple downlink reference signals via multiple downlink reference signal beams indicated by multiple uplink spatial filters or multiple TCI states, respectively. For example, in conjunction with the above... Figure 16 The communication management circuit 1642 shown and described can provide a component for receiving multiple downlink reference signals.

[0195] At box 1806, the UE can select multiple UE beams, where each of the multiple UE beams is selected based on a corresponding downlink reference signal among multiple downlink reference signals. For example, in conjunction with the above... Figure 16 The beam management circuit 1644 shown and described can provide a component for selecting multiple UE beams.

[0196] At box 1808, the UE can send multiple SRSs to multiple antenna panels of the base station based on multiple indicators. For example, in conjunction with the above... Figure 16 The communication management circuit 1642 shown and described may provide components for transmitting multiple SRSs. For example, in conjunction with the above... Figure 16 The communication management circuit 1642 shown and described can provide components for transmitting multiple SRSs.

[0197] In one aspect, sending multiple SRSs may include sending multiple SRSs to the base station on one or more SRS resources.

[0198] In one aspect, multiple downlink reference signals may include multiple synchronization signal blocks (SSBs), or multiple channel state information reference signals (CSI-RS), or combinations thereof.

[0199] In one aspect, receiving one or more SRS resources may include an SRS resource configuration for receiving one or more SRS resources.

[0200] In one aspect, SRS resource configuration may be received via Radio Resource Control (RRC) messages. In another aspect, one or more SRS resources may be identified for at least one of the following: codebook use, non-codebook use, antenna switching, beam management, or at least one SRS for positioning. In yet another aspect, one or more SRS resources may be identified for at least one of the following: periodic SRS type, semi-persistent SRS type, or aperiodic SRS type.

[0201] In one aspect, the SRS resource configuration can be received in response to panel switching in one or more of a plurality of antenna panels. In another aspect, the SRS resource configuration can be received via a message for updating the Radio Resource Control (RRC) configuration. In another aspect, the message for updating the RRC configuration may include a Media Access Control (MAC) control element (CE).

[0202] In one aspect, one or more SRS resources may include multiple SRS resources associated with multiple panel identifiers, or multiple TCI states, or multiple uplink spatial filters, or combinations thereof.

[0203] In one aspect, one or more SRS resources may include at least one SRS resource that is reused in a plurality of SRS transmissions, each of the plurality of SRS transmissions using at least one SRS resource associated with a corresponding indicator in at least one indicator that identifies a respective antenna panel in a plurality of antenna panels.

[0204] In one aspect, one or more SRS resources may include multiple SRS resources, each SRS resource including a single corresponding indicator among multiple indicators that identify a single antenna panel among multiple antenna panels.

[0205] In one aspect, panel switching associated with multiple antenna panels can be performed within a cyclic prefix, and one or more SRS resources include multiple SRS resources, and consecutive SRS resources among multiple SRS resources associated with different indicators among multiple indicators that identify different antenna panels among multiple antenna panels can be located within consecutive symbols.

[0206] In one aspect, panel handover associated with multiple antenna panels can be performed over a duration longer than the cyclic prefix, one or more SRS resources comprise multiple SRS resources, and consecutive SRS resources among multiple SRS resources associated with different indicators among multiple indicators identifying different antenna panels are separated by at least one guard symbol. In another aspect, the time interval for panel handover can be determined by the number of at least one guard symbol, and is determined based on at least one of subcarrier spacing or frequency range.

[0207] In one aspect, the plurality of indicators may include: a downlink TCI state associated with reception from a downlink channel of a first antenna panel among the plurality of antenna panels, and at least one of an uplink TCI state or an uplink spatial filter associated with transmission to an uplink channel of a second antenna panel among the plurality of antenna panels. In another aspect, receiving the plurality of indicators may include receiving a single TCI code point indicating at least one of the downlink TCI state and the uplink TCI state or the uplink spatial filter. In yet another aspect, receiving the plurality of indicators may include receiving a first TCI code point indicating the downlink TCI state and a second TCI code point indicating at least one of the uplink TCI state or the uplink spatial filter.

[0208] At box 1810, the UE can receive multiple communication configurations associated with multiple antenna panels, each of which indicates a transmit or receive configuration associated with a corresponding antenna panel among the multiple antenna panels. For example, in conjunction with the above... Figure 16 The communication management circuit 1642 shown and described can provide a component for receiving multiple communication configurations.

[0209] In one aspect, the plurality of antenna panels may include one or more antenna panels for transmitting or receiving in time division duplex (TDD) mode, and the plurality of communication configurations are determined based on the TDD mode. In another aspect, the plurality of antenna panels may include at least one antenna panel for transmitting and at least one antenna panel for receiving in full-duplex mode, and the plurality of communication configurations are determined based on the full-duplex mode.

[0210] In one configuration, UE 1600 includes features for performing operations related to... Figure 18 The components described are various functions and processes. In one aspect, the aforementioned components may be... Figure 16 The processor 1604 shown is configured to perform the functions listed above. Alternatively, the aforementioned components may be circuitry or any device configured to perform the functions listed above.

[0211] In one configuration, UE 1600 may include: means for receiving from a base station configured to communicate via a plurality of antenna panels, each identifying one of the plurality of antenna panels; and means for transmitting a plurality of SRSs to the plurality of antenna panels of the base station based on the plurality of indicators. In one aspect, UE 1600 may further include: means for receiving a plurality of downlink reference signals via a plurality of downlink reference signal beams indicated by a plurality of uplink spatial filters or a plurality of TCI states; and means for selecting a plurality of UE beams, wherein each of the plurality of UE beams is selected based on a corresponding downlink reference signal among the plurality of downlink reference signals. In another aspect, UE 1600 may further include: means for receiving a plurality of communication configurations associated with the plurality of antenna panels, wherein each of the plurality of communication configurations indicates a transmit configuration or receive configuration associated with a corresponding antenna panel among the plurality of antenna panels.

[0212] Of course, in the above example, the circuitry included in processor 1604 is provided merely as an example, and other components for implementing the described functions may be included within various aspects of this disclosure, including but not limited to instructions stored in computer-readable storage medium 1606, or in Figure 1 , Figure 2 , Figure 4 Figure 7 and / or Figure 8 Any of the descriptions in and using, for example, this article about Figure 18 Any other suitable device or component of the described process and / or algorithm.

[0213] The following provides an overview of several aspects of this disclosure.

[0214] Aspect 1: A method for wireless communication performed by a base station, comprising: sending to a user equipment (UE) a plurality of indicators identifying a plurality of antenna panels on the base station, wherein each of the plurality of indicators identifies a corresponding panel among the plurality of antenna panels; and communicating with the UE based on the plurality of indicators of the plurality of antenna panels.

[0215] Aspect 2: The method according to aspect 1 further includes: identifying one or more sounding reference signal (SRS) resources, wherein transmitting multiple indicators includes transmitting resource information indicating one or more SRS resources, each of the one or more SRS resources being associated with at least one of multiple indicators identifying at least one corresponding antenna panel among multiple antenna panels; and receiving multiple SRS from the UE via multiple antenna panels on one or more SRS resources.

[0216] Aspect 3: According to the method of aspect 1 or 2, wherein the plurality of indicators include a plurality of panel identifiers that identify a plurality of antenna panels respectively, a plurality of uplink spatial filters that correspond to a plurality of antenna panels respectively, a plurality of transmission configuration indication (TCI) states that correspond to a plurality of antenna panels respectively, or a combination thereof.

[0217] Aspect 4: According to the method of aspect 3, wherein multiple uplink spatial filters respectively indicate multiple downlink reference signal beams corresponding to multiple antenna panels, and wherein multiple TCI states respectively indicate multiple downlink reference signal beams corresponding to multiple antenna panels.

[0218] Aspect 5: According to the method of aspect 4, the multiple downlink reference signal beams include multiple synchronization signal block (SSB) beams or multiple channel state information reference signal (CSI-RS) beams.

[0219] Aspect 6: According to any one of Aspects 2 to 5, wherein sending resource information indicating one or more SRS resources includes: sending SRS resource configurations for one or more SRS resources.

[0220] Aspect 7: According to the method of aspect 6, one or more SRS resources include multiple SRS resources, and the SRS resource configuration is associated with an SRS resource set, which includes multiple SRS resources respectively associated with multiple antenna panels.

[0221] Aspect 8: According to the method of aspect 6, the SRS resource configuration is transmitted via a radio resource control (RRC) message.

[0222] Aspect 9: According to the method of aspect 8, identifying one or more SRS resources includes: identifying one or more SRS resources for at least one of the following: codebook use, non-codebook use, antenna switching, beam management, or at least one SRS for positioning.

[0223] Aspect 10: According to the method of aspect 8, identifying one or more SRS resources includes: identifying one or more SRS resources for at least one of the following: periodic SRS type, semi-persistent SRS type or non-periodic SRS type.

[0224] Aspect 11: According to the method of aspect 6, transmitting SRS resource configuration includes: transmitting SRS resource configuration in response to panel switching of multiple antenna panels.

[0225] Aspect 12: According to the method of aspect 11, the SRS resource configuration is sent via a message for updating the radio resource control (RRC) configuration.

[0226] Aspect 13: According to the method of aspect 12, the message used to update the RRC configuration includes a Media Access Control (MAC) control element (CE).

[0227] Aspect 14: The method of any one of Aspects 2 to 13, wherein one or more SRS resources include multiple SRS resources associated with multiple panel identifiers, or multiple TCI states, or multiple uplink spatial filters, or combinations thereof.

[0228] Aspect 15: The method according to any one of Aspects 2 to 13, wherein one or more SRS resources include at least one SRS resource that is reused in a plurality of SRS transmissions, each of the plurality of SRS transmissions using at least one SRS resource associated with a corresponding indicator in at least one indicator that identifies a corresponding antenna panel in a plurality of antenna panels.

[0229] Aspect 16: The method according to any one of Aspects 2 to 13, wherein one or more SRS resources include a plurality of SRS resources, each SRS resource including a single corresponding indicator among a plurality of indicators identifying a single antenna panel among a plurality of antenna panels.

[0230] Aspect 17: The method according to any one of Aspects 2 to 16, wherein panel switching associated with multiple antenna panels is performed within a cyclic prefix, wherein one or more SRS resources comprise multiple SRS resources, and wherein consecutive SRS resources among multiple SRS resources associated with different indicators among multiple indicators identifying different antenna panels among the multiple antenna panels are located within consecutive symbols.

[0231] Aspect 18: The method according to any one of Aspects 2 to 16, wherein panel switching associated with multiple antenna panels is performed over a duration longer than the cyclic prefix, wherein one or more SRS resources comprise multiple SRS resources, and wherein consecutive SRS resources associated with different indicators among multiple indicators identifying different antenna panels among the multiple antenna panels are separated by at least one guard symbol.

[0232] Aspect 19: According to the method of aspect 18, the time interval for panel switching is determined by the number of at least one protection symbol and is determined based on at least one of subcarrier spacing or frequency range.

[0233] Aspect 20: The method according to any one of Aspects 1 to 19, wherein the plurality of indicators includes at least one of a downlink transmission configuration indication (TCI) state associated with receiving from a downlink channel of a first antenna panel among the plurality of antenna panels, and an uplink TCI state or an uplink spatial filter associated with transmitting to an uplink channel of a second antenna panel among the plurality of antenna panels.

[0234] Aspect 21: According to the method of aspect 20, transmitting multiple indicators includes: transmitting a single TCI code point indicating at least one of downlink TCI state and uplink TCI state or uplink spatial filter.

[0235] Aspect 22: According to the method of aspect 20, transmitting multiple indicators includes: transmitting a first TCI code point indicating the downlink TCI state and a second TCI code point indicating at least one of the uplink TCI state or the uplink spatial filter.

[0236] Aspect 23: The method according to any one of aspects 1 to 22 further includes: transmitting a plurality of communication configurations respectively associated with a plurality of antenna panels, wherein each of the plurality of communication configurations indicates a transmission configuration or a reception configuration associated with a corresponding antenna panel among the plurality of antenna panels.

[0237] Aspect 24: According to the method of aspect 23, wherein the plurality of antenna panels include one or more antenna panels for transmitting or receiving in time division duplex (TDD) mode, and wherein the plurality of communication configurations are determined based on the TDD mode.

[0238] Aspect 25: According to the method of aspect 23, the plurality of antenna panels include at least one antenna panel for transmitting and at least one antenna panel for receiving in full-duplex mode, and wherein the plurality of communication configurations are determined based on the full-duplex mode.

[0239] Aspect 26: A user equipment (UE) comprising: a transceiver configured to communicate with a radio access network, a memory, and a processor communicatively coupled to the transceiver and the memory, wherein the processor and the memory are configured to perform any one of aspects 1 to 25.

[0240] Aspect 27: A UE configured for wireless communication, comprising: at least one component for performing any one of aspects 1 to 25.

[0241] Aspect 28: A non-transitory processor-readable storage medium having instructions thereon for a UE, wherein the instructions, when executed by a processing circuit, cause the processing circuit to perform any one of aspects 1 to 25.

[0242] Aspect 29: A method for wireless communication performed by a user equipment (UE), comprising: receiving from a base station configured to communicate via a plurality of antenna panels, each identifying a plurality of antenna panels; and transmitting a plurality of sounding reference signals (SRS) to the plurality of antenna panels of the base station based on the plurality of indicators.

[0243] Aspect 30: According to the method of aspect 29, receiving a plurality of indicators includes receiving resource information from a base station indicating one or more sounding reference signal (SRS) resources, wherein each of the one or more SRS resources is associated with at least one of a plurality of indicators identifying at least one corresponding antenna panel among a plurality of antenna panels, and wherein transmitting a plurality of SRSs includes transmitting a plurality of SRSs to the base station on the one or more SRS resources.

[0244] Aspect 31: According to the method of aspect 29 or 30, the plurality of indicators include a plurality of panel identifiers that identify a plurality of antenna panels respectively, a plurality of uplink spatial filters that correspond to a plurality of antenna panels respectively, a plurality of transmission configuration indication (TCI) states that correspond to a plurality of antenna panels respectively, or a combination thereof.

[0245] Aspect 32: The method according to aspect 31 further includes: receiving multiple downlink reference signals via multiple downlink reference signal beams indicated by multiple uplink spatial filters or multiple TCI states respectively; and selecting multiple UE beams, wherein each of the multiple UE beams is selected based on a corresponding downlink reference signal among the multiple downlink reference signals, wherein the multiple SRSs are transmitted to multiple antenna panels respectively using the multiple UE beams.

[0246] Aspect 33: According to the method of aspect 32, the multiple downlink reference signals include multiple synchronization signal blocks (SSBs), or multiple channel state information reference signals (CSI-RS), or combinations thereof.

[0247] Aspect 34: The method according to any one of aspects 30 to 33, wherein receiving resource information indicating one or more SRS resources includes: receiving SRS resource configuration of one or more SRS resources.

[0248] Aspect 35: According to the method of aspect 34, the SRS resource configuration is received via a radio resource control (RRC) message.

[0249] Aspect 36: According to the method of aspect 35, one or more SRS resources are identified for at least one of the following: codebook use, non-codebook use, antenna switching, beam management, or at least one SRS for positioning.

[0250] Aspect 37: According to the method of aspect 35, one or more SRS resources are identified for at least one of the following: periodic SRS type, semi-persistent SRS type or non-periodic SRS type.

[0251] Aspect 38: According to the method of aspect 34, the SRS resource configuration is received in response to panel switching in one or more of a plurality of antenna panels.

[0252] Aspect 39: According to the method of aspect 38, the SRS resource configuration is received via a message for updating the Radio Resource Control (RRC) configuration.

[0253] Aspect 40: According to the method of aspect 39, the message used to update the RRC configuration includes a Media Access Control (MAC) control element (CE).

[0254] Aspect 41: The method according to any one of Aspects 30 to 40, wherein one or more SRS resources include multiple SRS resources associated with multiple panel identifiers, or multiple TCI states, or multiple uplink spatial filters, or combinations thereof.

[0255] Aspect 42: The method according to any one of aspects 30 to 41, wherein one or more SRS resources include at least one SRS resource that is reused in a plurality of SRS transmissions, each of the plurality of SRS transmissions using at least one SRS resource associated with a corresponding indicator in at least one indicator that identifies a corresponding antenna panel in a plurality of antenna panels.

[0256] Aspect 43: The method according to any one of Aspects 30 to 41, wherein one or more SRS resources include a plurality of SRS resources, each SRS resource including a single corresponding indicator among a plurality of indicators identifying a single antenna panel among a plurality of antenna panels.

[0257] Aspect 44: The method according to any one of Aspects 30 to 43, wherein panel switching associated with multiple antenna panels is performed within a cyclic prefix, and wherein one or more SRS resources comprise multiple SRS resources, and wherein consecutive SRS resources associated with different indicators among multiple indicators identifying different antenna panels among the multiple antenna panels are located within consecutive symbols.

[0258] Aspect 45: The method according to any one of Aspects 30 to 43, wherein panel switching associated with multiple antenna panels is performed over a duration longer than the cyclic prefix, wherein one or more SRS resources comprise multiple SRS resources, and wherein consecutive SRS resources associated with different indicators among multiple indicators identifying different antenna panels among the multiple antenna panels are separated by at least one guard symbol.

[0259] Aspect 46: According to the method of aspect 45, the time interval for panel switching is determined by the number of at least one protection symbol and is determined based on at least one of subcarrier spacing or frequency range.

[0260] Aspect 47: The method according to any one of Aspects 29 to 46, wherein the plurality of indicators includes at least one of a downlink transmission configuration indication (TCI) state associated with receiving from a downlink channel of a first antenna panel among the plurality of antenna panels, and an uplink TCI state or an uplink spatial filter associated with transmitting to an uplink channel of a second antenna panel among the plurality of antenna panels.

[0261] Aspect 48: According to the method of aspect 47, receiving multiple indicators includes receiving a single TCI code point indicating at least one of downlink TCI state and uplink TCI state or uplink spatial filter.

[0262] Aspect 49: According to the method of aspect 47, receiving a plurality of indicators includes receiving a first TCI code point indicating a downlink TCI state and a second TCI code point indicating at least one of an uplink TCI state or an uplink spatial filter.

[0263] Aspect 50: The method according to any one of aspects 29 to 49 further includes: receiving a plurality of communication configurations respectively associated with a plurality of antenna panels, wherein each of the plurality of communication configurations indicates a transmit configuration or receive configuration associated with a corresponding antenna panel among the plurality of antenna panels.

[0264] Aspect 51: According to the method of aspect 50, the plurality of antenna panels include one or more antenna panels for transmitting or receiving in time division duplex (TDD) mode, wherein the plurality of communication configurations are determined based on the TDD mode.

[0265] Aspect 52: According to the method of aspect 50, the plurality of antenna panels include at least one antenna panel for transmitting and at least one antenna panel for receiving in full-duplex mode, wherein the plurality of communication configurations are determined based on the full-duplex mode.

[0266] Aspect 53: A user equipment (UE) comprising: a transceiver configured to communicate with a radio access network, a memory, and a processor communicatively coupled to the transceiver and the memory, wherein the processor and the memory are configured to perform any one of aspects 29 to 52.

[0267] Aspect 54: A UE configured for wireless communication, comprising: at least one component for performing any one of aspects 29 to 52.

[0268] Aspect 55: A non-transitory processor-readable storage medium having instructions thereon for a UE, wherein the instructions, when executed by processing circuitry, cause the processing circuitry to perform any one of aspects 29 to 52. Several aspects of wireless communication networks have been presented with reference to exemplary implementations. As will be readily understood by those skilled in the art, the various aspects described herein can be extended to other telecommunications systems, network architectures, and communication standards.

[0269] For example, these aspects can be implemented within other systems defined by 3GPP, such as Long Term Evolution (LTE), Evolved Packet System (EPS), Universal Mobile Telecommunications System (UMTS), and / or Global System for Mobile Communications (GSM). These aspects can also be extended to systems defined by 3GPP2 (3GPP2), such as CDMA2000 and / or Evolved Data Optimization (EV-DO). Other examples can be implemented within systems employing IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Ultra Wideband (UWB), Bluetooth, and / or other suitable systems. The actual telecommunications standards, network architecture, and / or communication standards employed will depend on the specific application and the overall design constraints imposed on the system.

[0270] Within this disclosure, the term “exemplary” is used to mean “serving as an example, instance, or illustration.” Any implementation or aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous to other aspects of this disclosure. Similarly, the term “aspect” does not require that all aspects of this disclosure include the features, advantages, or modes of operation discussed. The term “coupling” as used herein refers to direct or indirect coupling between two objects. For example, if object A physically contacts object B, and object B contacts object C, objects A and C can still be considered coupled to each other—even if they are not in direct physical contact with each other. For example, a first object can be coupled to a second object, even if the first object never has direct physical contact with the second object. The terms “circuit” and “circuitry” are used broadly and are intended to include both hardware implementations of electrical devices and conductors and software implementations of information and instructions that enable the performance of the functions described in this disclosure when connected and configured, and are not limited to types of electronic circuits, and software implementations that enable the performance of the functions described in this disclosure when executed by a processor.

[0271] Figures 1 to 18 One or more of the components, steps, features, and / or functions illustrated herein may be rearranged and / or combined into a single component, step, feature, or function, or embodied in several components, steps, or functions. Additional elements, components, steps, and / or functions may also be added without departing from the novel features disclosed herein. Figure 1 , Figure 2 , Figure 5 A. Figure 6, Figure 9 Figure 10 Figure 12 Figure 13 and Figure 16 The apparatuses, devices, and / or components illustrated herein can be configured to perform one or more of the methods, features, or steps described herein. The novel algorithms described herein can also be efficiently implemented in software and / or embedded in hardware.

[0272] It will be understood that the specific order or hierarchy of the steps in the disclosed method is an illustration of an exemplary process. Based on design preferences, it can be understood that the specific order or hierarchy of the steps in the method can be rearranged. The appended method claims present the elements of the steps in a sample order and are not intended to limit one to the presented specific order or hierarchy unless specifically enumerated therein.

[0273] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be consistent with the full scope of the language of the claims, wherein, unless specifically stated otherwise, the singular form of an element is not intended to mean “one and only one”, but rather “one or more”. Unless specifically stated otherwise, the term “some” means one or more. The phrase “at least one” in the list of referenced items refers to any combination of those items, including a single member. As an example, “at least one of a, b, or c” is intended to cover: a; b; c; a and b; a and c; b and c; and a, b, and c. All structural and functional equivalents of elements throughout the various aspects described herein that are known or will be known hereafter by a person skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended to be offered to the public, whether or not explicitly enumerated in the claims.

Claims

1. An access point for wireless communication, comprising: At least one processor; A transceiver coupled to the at least one processor; as well as Communication is coupled to the memory of the at least one processor. Wherein, the at least one processor is configured to: Sending a plurality of indicators to the user equipment (UE) identifying a plurality of antenna panels on the access point, wherein each of the plurality of indicators identifies a corresponding panel among the plurality of antenna panels; and Communicating with the UE based on multiple indicators on the multiple antenna panels; Identifying one or more Sounding Reference Signal (SRS) resources, wherein transmitting the plurality of indicators includes transmitting resource information indicating the one or more SRS resources, each of the one or more SRS resources being associated with at least one of the plurality of indicators identifying at least one corresponding antenna panel among the plurality of antenna panels; and Multiple detection reference signals (SRS) are received from the UE via the multiple antenna panels on one or more SRS resources; Wherein, the one or more SRS resources include multiple SRS resources, When a panel switch associated with the plurality of antenna panels is performed during the duration of the cyclic prefix of an OFDM symbol, consecutive SRS resources among the plurality of SRS resources associated with different indicators among the plurality of indicators identifying different antenna panels are located within consecutive OFDM symbols; or When a panel switching associated with the plurality of antenna panels is performed over a duration longer than the cyclic prefix of the OFDM symbol, consecutive SRS resources among the plurality of SRS resources associated with different indicators among the plurality of indicators identifying different antenna panels among the plurality of antenna panels are separated by at least one guard symbol.

2. The access point according to claim 1, wherein, The at least one processor configured to send resource information indicating the one or more SRS resources is configured to: Send the SRS resource configuration of the one or more SRS resources.

3. The access point according to claim 2, wherein, The one or more SRS resources include multiple SRS resources, and the SRS resource configuration is associated with an SRS resource set, which includes multiple SRS resources respectively associated with the multiple antenna panels.

4. The access point according to claim 2, wherein, The at least one processor configured to send the SRS resource configuration is configured to: The SRS resource configuration is transmitted in response to panel switching of the plurality of antenna panels.

5. The access point according to claim 1, wherein, The one or more SRS resources include at least one SRS resource that is reused in a plurality of SRS transmissions, each of the plurality of SRS transmissions using the at least one SRS resource associated with a corresponding indicator in the at least one indicator that identifies a respective antenna panel in the plurality of antenna panels.

6. The access point according to claim 1, wherein, The one or more SRS resources include a plurality of SRS resources, each SRS resource including a single corresponding indicator among the plurality of indicators that identify a single antenna panel among the plurality of antenna panels.

7. The access point according to claim 1, wherein, The time interval for panel switching is determined by the number of the at least one protection symbol, and the number of the at least one protection symbol is determined based on at least one of subcarrier spacing or frequency range, the frequency range corresponding to the frequency band where the plurality of SRS resources are located.

8. The access point according to claim 1, wherein, The plurality of indicators include: a downlink transmission configuration indication (TCI) state associated with receiving from the downlink channel of the first antenna panel among the plurality of antenna panels, and at least one of an uplink TCI state or an uplink spatial filter associated with transmitting to the uplink channel of the second antenna panel among the plurality of antenna panels.

9. The access point according to claim 8, wherein, The at least one processor configured to send the plurality of indicators is configured to: Send a single TCI code point indicating at least one of the downlink TCI state, the uplink TCI state, or the uplink spatial filter, or Transmit a first TCI code point indicating the downlink TCI state and a second TCI code point indicating at least one of the uplink TCI state or the uplink spatial filter.

10. The access point according to claim 1, wherein, The at least one processor is further configured to: Send multiple communication configurations associated with the plurality of antenna panels, wherein each of the plurality of communication configurations indicates a transmit configuration or receive configuration associated with a corresponding antenna panel among the plurality of antenna panels.

11. The access point according to claim 10, wherein, The plurality of antenna panels includes one or more antenna panels for transmitting or receiving in Time Division Duplex (TDD) mode, and The multiple communication configurations are determined based on the TDD mode.

12. The access point according to claim 10, wherein, The plurality of antenna panels includes at least one antenna panel for transmitting in full-duplex mode and at least one antenna panel for receiving. The multiple communication configurations are determined based on the full-duplex mode.

13. A method for wireless communication via an access point, comprising: Sending a plurality of indicators to the user equipment (UE) identifying a plurality of antenna panels on the access point, wherein each of the plurality of indicators identifies a corresponding panel among the plurality of antenna panels; and Communicating with the UE based on multiple indicators on the multiple antenna panels; Identifying one or more Sounding Reference Signal (SRS) resources, wherein transmitting the plurality of indicators includes transmitting resource information indicating the one or more SRS resources, each of the one or more SRS resources being associated with at least one of the plurality of indicators identifying at least one corresponding antenna panel among the plurality of antenna panels; and Multiple detection reference signals (SRS) are received from the UE via the multiple antenna panels on one or more SRS resources; Wherein, the one or more SRS resources include multiple SRS resources, When a panel switch associated with the plurality of antenna panels is performed during the duration of the cyclic prefix of an OFDM symbol, consecutive SRS resources among the plurality of SRS resources associated with different indicators among the plurality of indicators identifying different antenna panels are located within consecutive OFDM symbols; or When a panel switching associated with the plurality of antenna panels is performed over a duration longer than the cyclic prefix of the OFDM symbol, consecutive SRS resources among the plurality of SRS resources associated with different indicators among the plurality of indicators identifying different antenna panels among the plurality of antenna panels are separated by at least one guard symbol.

14. A user equipment (UE) for wireless communication, comprising: At least one processor; A transceiver coupled to the at least one processor; as well as Communication is coupled to the memory of the at least one processor. Wherein, the at least one processor is configured to: Receive from an access point configured to communicate via multiple antenna panels multiple indicators that identify the multiple antenna panels; and Based on the multiple indicators, multiple detection reference signals (SRS) are sent to multiple antenna panels of the access point respectively; The at least one processor configured to receive the plurality of indicators is configured to receive resource information from the access point indicating one or more Sounding Reference Signal (SRS) resources, wherein each of the one or more SRS resources is associated with at least one of the plurality of indicators identifying at least one corresponding antenna panel among the plurality of antenna panels, and The at least one processor configured to send the plurality of SRSs is configured to send the plurality of SRSs to the access point on the one or more SRS resources; Wherein, the one or more SRS resources include multiple SRS resources, When a panel switching associated with the plurality of antenna panels is performed by the access point during the duration of the cyclic prefix of an OFDM symbol, consecutive SRS resources among the plurality of SRS resources associated with different indicators among the plurality of indicators identifying different antenna panels are located within consecutive OFDM symbols; or When a panel switching associated with the plurality of antenna panels is performed by the access point for a duration longer than the cyclic prefix of the OFDM symbol, consecutive SRS resources among the plurality of SRS resources associated with different indicators among the plurality of indicators identifying different antenna panels among the plurality of antenna panels are separated by at least one guard symbol.

15. The UE according to claim 14, wherein, The at least one processor is further configured to: Multiple downlink reference signals are received via multiple downlink reference signal beams indicated by multiple uplink spatial filters corresponding to the multiple antenna panels or multiple transmission configuration indication (TCI) states corresponding to the multiple antenna panels, respectively. The multiple indicators include the multiple uplink spatial filters and / or the multiple TCI states. as well as Multiple UE beams are selected, wherein each of the multiple UE beams is selected based on a corresponding downlink reference signal among the multiple downlink reference signals. The multiple SRSs are transmitted to the multiple antenna panels respectively using the multiple UE beams.

16. The UE according to claim 14, wherein, The at least one processor configured to receive resource information indicating the one or more SRS resources is configured to: Receive the SRS resource configuration of the one or more SRS resources.

17. The UE according to claim 16, wherein, The SRS resource configuration is received in response to a panel switch performed by the access point in one or more of the plurality of antenna panels.

18. The UE according to claim 14, wherein, The one or more SRS resources include at least one SRS resource that is reused in a plurality of SRS transmissions, each of the plurality of SRS transmissions using at least one SRS resource associated with a corresponding indicator in the at least one indicator that identifies a respective antenna panel in the plurality of antenna panels.

19. The UE according to claim 14, wherein, The one or more SRS resources include a plurality of SRS resources, each SRS resource including a single corresponding indicator among the plurality of indicators that identify a single antenna panel among the plurality of antenna panels.

20. The UE according to claim 14, wherein, The time interval for panel switching performed by the access point is determined by the number of the at least one protection symbol and is based on at least one of subcarrier spacing or frequency range, the frequency range corresponding to the frequency band where the plurality of SRS resources are located.

21. The UE according to claim 14, wherein, The plurality of indicators include: a downlink transmission configuration indication (TCI) state associated with receiving from the downlink channel of the first antenna panel among the plurality of antenna panels, and at least one of an uplink TCI state or an uplink spatial filter associated with transmitting to the uplink channel of the second antenna panel among the plurality of antenna panels.

22. The UE according to claim 21, wherein, The at least one processor configured to receive the plurality of indicators is configured to receive a single TCI code point indicating at least one of the downlink TCI state, the uplink TCI state, or the uplink spatial filter, or The at least one processor configured to receive the plurality of indicators is configured to receive a first TCI code point indicating the downlink TCI state and a second TCI code point indicating at least one of the uplink TCI state or the uplink spatial filter.

23. The UE according to claim 14, wherein, The at least one processor is further configured to: Receive multiple communication configurations associated with the plurality of antenna panels, wherein each of the plurality of communication configurations indicates a transmit configuration or receive configuration associated with a corresponding antenna panel among the plurality of antenna panels.

24. A method for wireless communication performed by a user equipment (UE), comprising: Receive multiple indicators that identify the multiple antenna panels from an access point configured to communicate via multiple antenna panels; as well as Based on the multiple indicators, multiple detection reference signals (SRS) are sent to multiple antenna panels of the access point respectively; Receiving the plurality of indicators includes receiving resource information from the access point indicating one or more Sounding Reference Signal (SRS) resources, wherein each of the one or more SRS resources is associated with at least one of the plurality of indicators that identifies at least one corresponding antenna panel among the plurality of antenna panels. Sending the plurality of SRSs includes sending the plurality of SRSs to the access point on the one or more SRS resources, and Wherein, the one or more SRS resources include multiple SRS resources, When a panel switching associated with the plurality of antenna panels is performed by the access point during the duration of the cyclic prefix of an OFDM symbol, consecutive SRS resources among the plurality of SRS resources associated with different indicators among the plurality of indicators identifying different antenna panels are located within consecutive OFDM symbols; or When a panel switching associated with the plurality of antenna panels is performed by the access point for a duration longer than the cyclic prefix of the OFDM symbol, consecutive SRS resources among the plurality of SRS resources associated with different indicators among the plurality of indicators identifying different antenna panels among the plurality of antenna panels are separated by at least one guard symbol.

25. A computer program product comprising computer-readable instructions, which, when executed by a processor, cause the processor to perform the method of claim 13.

26. A computer program product comprising computer-readable instructions, which, when executed by a processor, cause the processor to perform the method of claim 24.

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