Comb offset hopping for SRS

Abstract

A UE may be configured with at least one SRS hopping configuration associated with an SRS hopping pattern, and the UE may obtain the SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset. Here, the SRS hopping pattern may include one or more subsets of hopping patterns, and each subset of hopping patterns, including a subset of consecutive SRS transmission opportunities, may be associated with a hopping offset. The UE may transmit a set of SRS across multiple SRS transmission occasions based on the SRS hopping pattern.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. patent application serial number 17 / 817,939, filed on August 5, 2022, entitled “COMB OFFSET HOPPING FOR SRS,” which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to communication systems, and more particularly, to including comb offset hopping for sounding reference signal (SRS) transmissions. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5GNR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Certain aspects of 5G NR may be based on 4G Long Term Evolution (LTE) standards. It is necessary to further improve 5G NR technology. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the invention

[0006] A simplified overview of one or more aspects is presented below to provide a basic understanding of these aspects. This summary is not an extensive review of all contemplated aspects. This summary neither identifies the key or important elements of all aspects, nor describes the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to a more detailed description presented later.

[0007] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may include a user equipment (UE), the UE being configured to: receive at least one sounding reference signal (SRS) hopping configuration from a network node; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and transmit an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern.

[0008] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may include a network node, the network node being configured to: send at least one SRS hopping configuration for a UE; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern.

[0009] To achieve the aforementioned and related purposes, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain exemplary features of one or more aspects. However, these features indicate only some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0011] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0012] Figure 2B is a diagram illustrating an example of downlink (DL) channels within a subframe according to various aspects of the present disclosure.

[0013] Figure 2C is a diagram illustrating an example of a second frame according to various aspects of the present disclosure.

[0014] Figure 2D is a diagram illustrating an example of uplink (UL) channels within a subframe according to various aspects of the present disclosure.

[0015] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0016] Figure 4 is a diagram illustrating an example of UE positioning based on reference signal measurement.

[0017] Figure 5 An example of an SRS comb pattern used for SRS transmission is illustrated.

[0018] Fig. 6A , Figure 6B and Figure 6C An example of frequency hopping for SRS transmission is illustrated.

[0019] Fig. 7A and Figure 7B is an example of a comb offset hopping pattern configured for a subset of symbols.

[0020] Figure 8 is a call flow diagram of a method of wireless communication.

[0021] Fig. 9 is a flow chart of a method of wireless communication.

[0022] Fig.10 is a flow chart of a method of wireless communication.

[0023] Fig.11 is a flow chart of a method of wireless communication.

[0024] Fig.12 is a flow chart of a method of wireless communication.

[0025] Fig.13 are diagrams illustrating examples of hardware implementations for example apparatuses and / or network entities.

[0026] Fig.14 is a diagram illustrating an example of a hardware implementation for an example network entity.

[0027] Fig.15 is a diagram illustrating an example of a hardware implementation for an example network entity. DETAILED DESCRIPTION

[0028] A wireless communication system may support user equipment (UE) configured to perform sounding reference signal (SRS) transmission to multiple cells or transmit receive points (TRPs), and a large number of UEs performing SRS transmission to different cells or TRPs may cause inter-cluster interference. In some aspects of the present disclosure, comb offset hopping may be provided as an example of an interference randomization mechanism. These examples may provide randomization while maintaining the specific properties of a staggered SRS comb pattern with evenly spaced comb offsets so that an increased number of REs may be uniformly probed.

[0029] The specific embodiments described below in conjunction with the accompanying drawings are descriptions of various configurations and do not represent the only configurations in which the concepts described herein can be practiced. In order to provide a thorough understanding of the various concepts, the specific embodiments include specific details. However, 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 blurring these concepts.

[0030] Several aspects of telecommunication systems are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0031] As an example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system", which includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic components, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout the present disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.

[0032] Thus, in one or more example aspects, specific implementations and / or use cases, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available media that can be accessed by a computer. As an example, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other medium that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0033] Although various aspects, specific implementations and / or use cases are described in this application by the illustration of some examples, additional or different aspects, specific implementations and use cases may be generated in many different arrangements and scenarios. The various aspects, specific implementations and / or use cases described herein can be implemented across many different platform types, devices, systems, shapes, sizes and packaging arrangements. For example, various aspects, specific implementations and / or use cases can be generated via integrated chip specific implementations and other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / purchase equipment, medical equipment, artificial intelligence (AI) enabled devices, etc.). Although some examples may or may not be specifically for use cases or applications, the described examples may have a wide range of applicability. Various aspects, specific implementations and / or use cases can be in the range from chip-level or modular components to non-modular, non-chip-level specific implementations, and further to the range of aggregated, distributed or original equipment manufacturer (OEM) devices or systems in conjunction with one or more technologies herein. In some actual settings, the equipment combined with the various aspects and features described may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.) The techniques described herein can be practiced in a wide variety of devices of various sizes, shapes, and configurations, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc.

[0034] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or constituent parts in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element or a network equipment (such as a base station (BS), or one or more units (or one or more components) that perform base station functionality) can be implemented in an aggregated architecture or a decomposed architecture. For example, a BS (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a transmit receive point (TRP) or a cell, etc.) can be implemented as an aggregated base station (also referred to as an independent BS or a monolithic BS) or a decomposed base station.

[0035] A converged base station may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack physically or logically distributed between two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed in one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may be implemented as a virtual unit, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0036] Base station operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be used in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (network configuration such as that initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Decomposition may include distributing functionality across two or more units at various physical locations, as well as virtually distributing functionality of at least one unit, which may enable flexibility in network design. Various units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0037] Figure 1 1 is a diagram 100 illustrating an example of a wireless communication system and an access network. The illustrated wireless communication system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that may communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units, such as a near real-time (near RT) RAN intelligent controller (RIC) 125 via an E2 link, or a non-real-time (non-RT) RIC 115 associated with a service management and orchestration (SMO) framework 105, or both. The CU 110 may communicate with one or more DUs 130 via corresponding midhaul links, such as an F1 interface. The DU 130 may communicate with one or more RUs 140 via corresponding fronthaul links. The RU 140 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 140.

[0038] Each of the units (i.e., CU 110, DU 130, RU 140, and near-RT RIC 125, non-RT RIC 115, and SMO framework 105) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface configured to receive signals or send signals to one or more of the other units via a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as an RF transceiver) configured to receive and / or send signals to one or more of the other units via a wireless transmission medium.

[0039] In some aspects, CU 110 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface configured to communicate signals with other control functions hosted by CU 110. CU110 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 110 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 110 may be implemented to communicate with DU 130 for network control and signaling.

[0040] DU 130 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 140. In some aspects, DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) at least in part according to a functional split (such as those defined by 3GPP). In some aspects, DU 130 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 130 or with control functions hosted by CU 110.

[0041] The lower layer functionality may be implemented by one or more RUs 140. In some deployments, the RU 140 controlled by the DU 130 may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on functional splitting (such as lower layer functional splitting). In such an architecture, the RU 140 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some specific implementations, the real-time and non-real-time aspects of communicating with the control plane and user plane of the RU 140 may be controlled by the corresponding DU 130. In some scenarios, this configuration may enable the implementation of the DU 130 and the CU 110 in a cloud-based RAN architecture (such as a vRAN architecture).

[0042] The SMO framework 105 may be configured to support RAN deployment and configuration of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 110, DU 130, RU 140, and near-RT RIC 125. In some specific implementations, the SMO framework 105 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 111) via the O1 interface. Additionally, in some specific implementations, the SMO framework 105 may communicate directly with one or more RUs 140 via the O1 interface. The SMO framework 105 may also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105 .

[0043] The non-RT RIC 115 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 may be coupled to or in communication with the near-RT RIC 125 (such as via an A1 interface). The near-RT RIC 125 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 110, one or more DUs 130, or both, and the O-eNB with the near-RT RIC 125.

[0044] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 125, the non-RT RIC 115 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 125 and may be received from a non-network data source or from a network function at the SMO framework 105 or the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 may be configured to adjust RAN behavior or performance. For example, the non-RT RIC 115 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0045] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Therefore, the base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component is indicated by a dotted line to indicate that each component may be included in the base station 102 or may not be included in the base station). The base station 102 provides an access point to the core network 120 for the UE 104. The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). Small cells include femto cells, pico cells, and micro cells. A network including both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). The communication link between RU 140 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to RU 140 and / or downlink (DL) (also known as forward link) transmission from RU 140 to UE 104. The communication link may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may be through one or more carriers. For each carrier allocated in a carrier aggregation of up to YxMHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum of up to YMHz (e.g., 5MHz, 10MHz, 15MHz, 20MHz, 100MHz, 400MHz, etc.) bandwidth. These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL than to UL). Component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0046] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through a variety of wireless D2D communication systems, such as, for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0047] The wireless communication system may also include a Wi-Fi AP 150 that communicates with a UE 104 (also referred to as a Wi-Fi station (STA)) via a communication link 154, for example, in a 5 GHz unlicensed spectrum, etc. When communicating in an unlicensed spectrum, the UE 104 / AP 150 may perform a clear channel assessment (CCA) to determine whether a channel is available prior to communication.

[0048] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5GNR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as the "below 6 GHz" band in various documents and articles. A similar naming problem sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0049] The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz-24.25GHz). The frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, currently exploring higher frequency bands to extend 5G NR operation to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designation FR2-2 (52.6GHz-71GHz), FR4 (71GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0050] In view of the above, unless otherwise specified, if the term "6 GHz or less" is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specified, if the term "millimeter wave" is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.

[0051] The base station 102 and the UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming. The base station 102 may send a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also send a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the optimal receive direction and transmit direction for each of the base station 102 / UE 104. The transmit direction and receive direction of the base station 102 may be the same or different. The transmit direction and receive direction of the UE 104 may be the same or different.

[0052] The base station 102 may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit receive point (TRP), a network node, a network entity, a network equipment, or some other suitable term. The base station 102 may be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and a RU, or as a decomposed base station including one or more of a CU, a DU, and / or a RU. A set of base stations that may include decomposed base stations and / or aggregated base stations may be referred to as a next generation (NG) RAN (NG-RAN).

[0053] The core network 120 may include an access and mobility management function (AMF) 161, a session management function (SMF) 162, a user plane function (UPF) 163, a unified data management (UDM) 164, one or more location servers 168, and other functional entities. AMF 161 is a control node that handles signaling between UE 104 and the core network 120. AMF 161 supports registration management, connection management, mobility management, and other functions. SMF 162 supports session management and other functions. UPF 163 supports packet routing, packet forwarding, and other functions. UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identity handling, access authorization, and subscription management. One or more location servers 168 are illustrated as including a gateway mobile location center (GMLC) 165 and a location management function (LMF) 166. However, in general, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, LMF 166, position determination entity (PDE), service mobile location center (SMLC), mobile positioning center (MPC), etc. GMLC 165 and LMF 166 support UE location services. GMLC 165 provides an interface for clients / applications (e.g., emergency services) to access UE positioning information. LMF 166 receives measurement and assistance information from NG-RAN and UE 104 via AMF 161 to calculate the location of UE 104. NG-RAN may determine the location of UE 104 using one or more positioning methods. Positioning UE 104 may involve signal measurements, position estimation, and optional speed calculation based on these measurements. Signal measurements may be performed by UE 104 and / or serving base station 102. The measured signals may be based on a satellite positioning system (SPS) 170 (e.g., one or more of a global navigation satellite system (GNSS), a global positioning system (GPS), a non-terrestrial network (NTN), or other satellite positioning / positioning systems), LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS), sensor-based information (e.g., an atmospheric pressure sensor, a motion sensor), an NR enhanced cell ID (NR E-CID) method, NR signals (e.g., multi-round trip time (multi-RTT), DL angle of departure (DL-AoD), DL time difference of arrival (DL-TDOA), UL time difference of arrival (UL-TDOA), and UL angle of arrival (UL-AoA) positioning), and / or one or more of other systems / signals / sensors.

[0054] Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, healthcare equipment, implants, sensors / actuators, displays, or any other similarly functional devices. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as stations, mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, mobile phones, user agents, mobile clients, clients, or some other suitable terminology. In some scenarios, the term "UE" may also be applied to one or more supporting devices, such as in a device constellation arrangement. One or more of these devices may access the network collectively and / or individually.

[0055] Reference again Figure 1 In certain aspects, the UE 104 may include an SRS hopping configuration component 198 configured to: receive at least one SRS hopping configuration from a network node; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern comprising one or more subsets of the hopping pattern, and each subset of the hopping pattern comprising a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and transmit an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. In some aspects, the base station 102 may include an SRS hopping configuration component 199 configured to: send at least one SRS hopping configuration for the UE; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0056] Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G NR frame structure. Figure 2BFIG230 is a diagram illustrating an example of DL channels within a 5G NR subframe. Figure 2C FIG250 is a diagram illustrating an example of a second subframe within a 5G NR frame structure. Figure 2D FIG280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD) (wherein for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL), or may be time division duplex (TDD) (wherein for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL). Figure 2A , Figure 2C In the example provided, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 1 (all of which are UL). Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0 to 61. Slot formats 0 and 1 are full DL and full UL, respectively. Other slot formats 2 to 61 include a mix of DL, UL and flexible symbols. The UE is configured with the slot format through the received slot format indicator (SFI) (dynamically configured through DL control information (DCI) or semi-statically / statically configured through radio resource control (RRC) signaling). Note that the following description also applies to the 5GNR frame structure as TDD.

[0057] FIG. 2A to FIG. 2D The frame structure is illustrated, and various aspects of the present disclosure may be applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 subframes of equal size (1ms). Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4, or 2 symbols. Each time slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For a normal CP, each time slot may include 14 symbols, and for an extended CP, each time slot may include 12 symbols. The symbol on the DL may be a CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) extended OFDM (DFT-s-OFDM) symbol (also known as a single carrier frequency division multiple access (SC-FDMA) symbol) (for power-limited scenarios; limited to single-stream transmission). The number of slots in a subframe is based on the CP and the parameter set. The parameter set defines the subcarrier spacing (SCS) (see

[0058] Table 1). Symbol length / duration can be scaled with 1 / SCS.

[0059]

[0060] Table 1: Parameter set, SCS and CP

[0061] For normal CP (14 symbols / slot), different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter set 2 allows 4 slots per subframe. Thus, for normal CP and parameter set μ, there are 14 symbols / slot and 2 μ timeslots / subframe. The subcarrier spacing can be equal to 2 μ *15kHz, where μ is parameter set 0 to 4. Therefore, the subcarrier spacing for parameter set μ=0 is 15kHz, and the subcarrier spacing for parameter set μ=4 is 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIG. 2A to FIG. 2D An example of a parameter set μ=2 with a normal CP of 14 symbols per slot and 4 slots per subframe is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is about 16.67 μs. Within a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP may have a specific parameter set and CP (normal or extended).

[0062] A resource grid may be used to represent a frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a number of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0063] like Figure 2A As illustrated, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) (indicated as R for a particular configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0064] Figure 2BExamples of various DL channels within a subframe of a frame are illustrated. A physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE including six RE groups (REGs), each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within a BWP may be referred to as a control resource set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during a PDCCH monitoring opportunity on a CORESET, wherein the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies on the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. A secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not sent via the PBCH (such as a system information block (SIB)), and paging messages.

[0065] like Figure 2C As illustrated, some of the REs carry DM-RS (indicated as R for a particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may send a DM-RS for a physical uplink control channel (PUCCH) and a DM-RS for a physical uplink shared channel (PUSCH). The PUSCH DM-RS may be sent in the first or first two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS may be sent in different configurations. The UE may send a sounding reference signal (SRS). The SRS may be sent in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the comb teeth. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0066] Figure 2DExamples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and may be used to carry, among other things, a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0067] Figure 3 370 is a block diagram of a base station 310 in an access network communicating with a UE 350. In the DL, Internet Protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with delivery of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0068] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1 (which includes the physical (PHY) layer) may include error detection on the transport channel, forward error correction (FEC) coding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-order phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). The decoded and modulated symbols can then be divided into parallel streams. Subsequently, each stream can be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially pre-coded to generate multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine coding and modulation schemes, as well as for spatial processing. Channel estimates may be derived based on reference signals and / or channel condition feedback sent by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier for transmission using a corresponding spatial stream.

[0069] At the UE 350, each receiver 354Rx receives a signal through its corresponding antenna 352. Each receiver 354Rx recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined into a single OFDM symbol stream by the RX processor 356. The RX processor 356 then uses a fast Fourier transform (FFT) to convert the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbol on each subcarrier and the reference signal are recovered and demodulated by determining the signal constellation point most likely to be sent by the base station 310. These soft decisions can be based on the channel estimate calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by the base station 310. The data and control signals are then provided to a controller / processor 359, which implements layer 3 and layer 2 functionality.

[0070] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0071] Similar to the functionality described in conjunction with DL transmissions performed by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0072] Channel estimates derived by the channel estimator 358 based on a reference signal or feedback sent by the base station 310 may be used by the TX processor 368 to select appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a corresponding spatial stream for transmission.

[0073] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to the RX processor 370.

[0074] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0075] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform operations related to Figure 1 198. At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform operations related to Figure 1 Various aspects related to the modulation configuration component 199.

[0076] Figure 4 4 is a diagram illustrating an example of UE positioning based on reference signal measurement. UE 404 may be at time T SRS_TX UL-SRS 412 is sent and at time T PRS_RX A DL positioning reference signal (PRS) (DL-PRS) 410 is received. TRP 406 may be at time T SRS_RX Receive UL-SRS 412 and at time T PRS_TX 410. UE 404 may receive DL-PRS 410 before transmitting UL-SRS 412, or may transmit UL-SRS 412 before receiving DL-PRS 410. In both cases, a positioning server (e.g., location server 168) or UE 404 may determine the UL-SRS 412 based on ||T SRS_RX -T PRS_TX |-|T SRS_TX -T PRS_RX || to determine RTT 414. Thus, multi-RTT positioning may utilize UE ERx-Tx time difference measurements (ie, |T SRS_TX -T PRS_RX |) and DL-PRS reference signal received power (RSRP) (DL-PRS-RSRP), and the measured TRP Rx-Tx time difference measurement (ie, |T SRS_RX -T PRS_TX |) and UL-SRS-RSRP. The UE 404 measures the UE Rx-Tx time difference measurement (and optionally the DL-PRS-RSRP of the received signal) using the assistance data received from the positioning server, and the TRP 402, 406 measures the gNB Rx-Tx time difference measurement (and optionally the UL-SRS-RSRP of the received signal) using the assistance data received from the positioning server. These measurements may be used at the positioning server or the UE 404 to determine the RTT, which is used to estimate the position of the UE 404. Other methods for determining the RTT are possible, such as, for example, using DL-TDOA and / or UL-TDOA measurements.

[0077] DL-AoD positioning may utilize the measured DL-PRS-RSRP of downlink signals received from multiple TRPs 402, 406 at the UE 404. The UE 404 measures the DL-PRS-RSRP of the received signals using assistance data received from a positioning server, and the resulting measurements, along with the departure azimuth angle (A-AoD), departure zenith angle (Z-AoD), and other configuration information, are used to position the UE 404 relative to neighboring TRPs 402, 406.

[0078] DL-TDOA positioning may utilize DL Reference Signal Time Difference (RSTD) (and optionally DL-PRS-RSRP) of downlink signals received from multiple TRPs 402, 406 at the UE 404. The UE 404 measures the DL RSTD (and optionally DL-PRS-RSRP) of the received signals using assistance data received from a positioning server, and the resulting measurements are used along with other configuration information to position the UE 404 relative to neighboring TRPs 402, 406.

[0079] UL-TDOA positioning may utilize the UL relative time of arrival (RTOA) (and optionally UL-SRS-RSRP) of uplink signals sent from the UE 404 at multiple TRPs 402, 406. The TRPs 402, 406 measure the UL-RTOA (and optionally UL-SRS-RSRP) of the received signals using assistance data received from a positioning server, and the resulting measurements are used along with other configuration information to estimate the position of the UE 404.

[0080] UL-AoA positioning may utilize the measured azimuth angle of arrival (A-AoA) and zenith angle of arrival (Z-AoA) of uplink signals sent from the UE 404 at multiple TRPs 402, 406. The TRPs 402, 406 measure the A-AoA and Z-AoA of the received signals using assistance data received from a positioning server, and the resulting measurements are used along with other configuration information to estimate the position of the UE 404.

[0081] Additional positioning methods may be used to estimate the position of the UE 404, such as, for example, UE-side UL-AoD and / or DL-AoA. Note that data / measurements from various techniques may be combined in various ways to increase accuracy, determine and / or enhance certainty, supplement / complete measurements, and / or replace / provide missing information.

[0082] The base sequence used for SRS transmission can be based on the SRS sequence identifier configured according to the SRS resource and whether group hopping, sequence hopping, or neither is configured (as per the configuration of the SRS resource). For SRS, v corresponds to the sequence index and u corresponds to the group index. In some aspects, when neither group hopping nor sequence hopping is configured, The group index and sequence index for the SRS base sequence, and the base sequence is fixed across all OFDM symbols in all time slots used for SRS transmission in the SRS resource. The network (e.g., via a network node) may Different SRS resources allocated to different UEs across the same / different cells to avoid interference (interference planning). For group hopping, the sequence index v=0 and the group index u may be pseudo-randomly selected in each OFDM symbol of an SRS resource and in each time slot occupied by this resource. The pseudo-random sequence c(i) controlling the group hopping may be initialized at the beginning of each radio frame as This may include interference randomization by hopping across 30 groups.

[0083] For sequence hopping, the group index The same as when no hopping is used. However, the sequence index v may be pseudo-randomly selected between 0 and 1 in each OFDM symbol of the SRS resource and in each time slot occupied by the resource. Likewise, the pseudo-random sequence c(i) that controls the sequence hopping may be passed at the beginning of each radio frame. Initialization. Interference randomization by both cross-sequence hopping and cross-group interference planning may be supported. In some examples, if a variable of a sequence hopping group, which may be referred to as "grouporSequenceHopping", is equal to "either", neither group hopping nor sequence hopping may be used for SRS transmission.

[0084] SRS can be sent using a comb pattern. Figure 2C Describe aspects of the SRS comb pattern. Figure 5 An example of an SRS comb pattern 500 for SRS transmission is illustrated. The UE may receive at least one configuration for SRS transmission from a network node. In one example, the at least one configuration may indicate an SRS resource or a set of SRS resources used for SRS transmission or other parameters for SRS transmission. The at least one configuration may include a comb spacing (or a number of comb spacings) or a comb offset. Here, the comb spacing may refer to the spacing in the frequency domain between SRS transmissions within a symbol, and the comb offset may refer to the starting subcarrier within an RB relative to a base subcarrier index (e.g., subcarrier index 0). In one example, the comb spacing (K TC ) can be configured as 2, 4 or 8 per SRS resource, which is the spacing between two SRS REs within an OFDM symbol. In another example, the comb offset Can be configured as 0, 1, ... per SRS resource (K TC -1) which can determine the SRS RE (for example, once the starting RE is determined, when the SRS occupies every Kth RE within the detection BW Tc RE when starting RE).

[0085] For example, the SRS comb pattern 500 may include a first SRS comb pattern 510, a second SRS comb pattern 520, a third SRS comb pattern 530, and a fourth SRS comb pattern 540. The first SRS comb pattern 510 indicates that the comb interval is 2 and the comb offset is 0. Based on an offset of 1, the first SRS comb pattern 510 and the second SRS comb pattern 520 may have an interlaced pattern. The second SRS comb pattern 520 includes a comb interval of 2 and a comb offset of 1. The third SRS comb pattern 530 includes a comb interval of 4 and a comb offset of 0. The fourth SRS comb pattern 540 includes a comb interval of 4 and a comb offset of 2. Based on an offset of 2, the third SRS comb pattern 530 and the fourth SRS comb pattern 540 may have an interlaced pattern.

[0086] The UE may receive at least one SRS configuration from a network entity, for example in RRC signaling. In some aspects, this may include at least one SRS configuration including various parameters (such as comb offset, comb spacing, etc.) based on various formulas. In one example, the parameters Currently available for SRS for positioning (with samples of all REs in different symbols of the SRS resource), and for SRS transmission other than SRS for positioning, the parameter Can be set to 0. In the case of SRS for positioning, an offset can be configured for SRS staggering. Here, SRS triggering is different from the pseudo-random sequence-based hopping discussed for the purpose of interference randomization.

[0087] Frequency domain start position (e.g., related to the comb spacing) can be defined as in Here, the offset of SRS Can be K TC The l functions of and can be found in Table 2.

[0088]

[0089] Table 2: SRS offset As K TC and l′ .

[0090] In some respects, Can be expressed as

[0091]

[0092] In the case of multi-port SRS resources, all ports can be configured on the same RE / comb offset. That is, in multi-port SRS transmission, all ports can be configured to transmit on the same RE associated with the SRS resource. There may be two exceptions. In one exception, when there are four SRS ports with a comb spacing of eight and the maximum number of six cyclic shifts are applied, the four SRS ports may not be evenly distributed over the six (6) cyclic shifts. In another exception, there may be four SRS ports divided into

[0093] two groups, and if the configured cyclic shift is in the second half, the first half and the second half of the four SRS ports can be configured on different comb offsets.

[0094] Fig. 6A 、 Figure 6B and Figure 6C Examples 600, 630, and 660 illustrate hopping for SRS transmission. Each SRS resource can be configured with N OFDM symbols and R repetitions. That is, N OFDM symbols can be configured for SRS transmission (or SRS transmission occasion), and each SRS transmission can be repeated with a repetition factor R (e.g., the number of repetitions). If R < N, the SRS resource can include N / R frequency hops within the SRS resource. Here, the number of OFDM symbols (e.g., N) and the repetition factor (e.g., R) for SRS transmission can be determined based on Table 3 below. Here, the number of OFDM symbols indicates how many OFDM symbols are included in the SRS transmission.

[0095] N resources per SRS R = Repetition Factor 1 1 2 1,2 4 1,2,4 8 1,2,4,8 10 1,2,5,10 12 1,2,3,6,12 14 1,2,7,14

[0096] Table 3. Number of OFDM symbols and repetition factors used for SRS transmission

[0097] In some examples, referring to Fig. 6A 、 Figure 6B and Figure 6C , Examples 600, 630, and 660 show that the sounding BW is 48 PRBs. Fig. 6A Example 600 illustrates the first hopping pattern for SRS transmission with N = 2 and R = 1. That is, the number of OFDM symbols (e.g., N) can be 2, and the repetition factor (e.g., R) can be 1. In addition, the bandwidth per hop can be 24 PRBs. Figure 6B Example 630 illustrates the second hopping pattern for SRS transmission with N = 4 and R = 1. That is, the number of OFDM symbols (e.g., N) can be 4, and the repetition factor (e.g., R) can be 1. In addition, the bandwidth per hop can be 12 PRBs. Figure 6CA third example 660 of a frequency hopping pattern for SRS transmission with N=4 and R=2 is illustrated. That is, the number of OFDM symbols (e.g., N) may be 4, and the repetition factor (e.g., R) may be 2. In addition, the bandwidth of each hop may be 24 PRBs. Because the repetition factor is 2, each frequency hop may be repeated twice (2).

[0098] In some aspects, a wireless communication system may support UEs configured for SRS transmission to multiple cells or TRPs (e.g., network nodes). Since a large number of UEs perform SRS transmission to different cells / TRPs, this may result in an increase in SRS transmission within a given SRS opportunity. That is, coherent joint transmission (CJT) across multiple TRPs may be supported, where different UEs are configured to perform SRS transmission across different SRS Tx opportunities. This may result in multiple TRPs receiving SRS transmissions from a given UE. In the case where a large number of UEs are configured for SRS transmission, this may result in multiple UEs ending up performing SRS transmissions during the same OFDM symbol. In order to properly transmit and receive SRS transmissions by multiple UEs during the same OFDM symbol, interference randomization may be provided to avoid or mitigate inter-cluster interference. For example, an interference randomization mechanism may include group hopping, sequence hopping (e.g., in the SRS base sequence domain), or cyclic shift hopping.

[0099] Based on the staggered SRS (for example, according to Table 2, the offset of SRS As K TC and l′), the UE may avoid or mitigate some inter-cluster interference. That is, with a staggered SRS configuration, different symbols of a given SRS resource may have had different comb offsets to avoid or mitigate inter-cluster interference. However, since the comb offset pattern may be fixed (e.g., Table 2) rather than pseudo-random, and multiple UEs may result in probing within a set of consecutive OFDM symbols (or a subset if consecutive OFDM symbols), two or more comb offsets are uniformly probed. Therefore, a staggered SRS configuration may not be sufficient for CJT across multiple TRPs.

[0100] In one aspect, comb offset hopping may be provided as an example of an interference randomization mechanism. The comb offset hopping may include a comb offset determined based on a pseudo-random sequence with a specific initialization and according to time (e.g., a slot number or a symbol number) (e.g., according to a comb offset hopping formula). In one example, such a determined unit may be based on a symbol configuration (e.g., the comb offset is pseudo-randomly determined according to an SRS symbol) or may be based on an SRS resource configuration (e.g., the pseudo-random determination does not change within an instance of an SRS resource having N symbols, but may change in different instances of the SRS resource). The pseudo-random sequence may be associated with various parameters, including a slot number within a radio frame or a symbol number within a slot.

[0101] In some aspects, pseudo-random comb offset hopping may be configured for SRSs used for positioning to maintain specific properties of the staggered SRSs (e.g., according to Table 2, the offsets of the SRSs are As K TC and l′). For example, in the case where the comb spacing is 8 and N=8 OFDM symbols, the hopping pattern can be 0, 4, 2, 6, 1, 5, 3, 7 (e.g., Table 2). In one example, eight (8) OFDM symbols can be considered as one group, and all comb offsets can be detected. In another example, four (4) symbols can be considered as one group, and the eight (8) OFDM symbols can be divided into two (2) groups (e.g., {0, 4, 2, 6} or {1, 5, 3, 7}), each group including four (4) evenly spaced comb offsets that can be detected within each group. In another example, two (2) symbols can be considered as one group, and the eight (8) OFDM symbols can be divided into four (4) groups (e.g., {0, 4}, {2, 6}, {1, 5}, or {3, 7}), each group including two (2) evenly spaced comb offsets that can be detected within each group.

[0102] In one aspect, in the case of applying a time domain orthogonal cover code (TD-OCC) sequence, a set of OFDM symbols on which the TD-OCC sequence is applied may have the same comb offset. On the other hand, when the repetition factor is greater than one (1) (e.g., R>1), a set of OFDM symbols with repeated SRS may have the same comb offset.

[0103] In some aspects, the SRS may be configured by a higher layer parameter (e.g., configuring an SRS-PosResource for SRS for positioning), and a pseudo-random comb offset hopping may be configured. Here, the unit of hopping may be a group of X consecutive OFDM symbols for each SRS resource, where X may be a function of at least the comb spacing (e.g., 2, 4, 8) and the number of OFDM symbols of the SRS resource (e.g., N). Here, the hopping formula may (e.g., pseudo-randomly) determine a comb offset value common to all symbols in a group of X consecutive symbols. That is, when a network node configures an SRS for positioning using pseudo-random comb offset hopping to a UE, the UE and the network may apply the same comb offset value to a group of consecutive OFDM symbols for each SRS resource.

[0104] In some aspects, the hopping pattern may be configured according to the slot number within the frame and the symbol number within the slot of the first symbol in the group of X consecutive symbols. That is, different comb offset hopping based on pseudo-random numbers may be applied every group of X consecutive symbols, and within the group of X consecutive symbols, the same comb offset pattern may be applied relative to a common comb offset value, wherein the comb offset pattern may maintain a specific property of a staggered SRS comb pattern with evenly spaced comb offsets.

[0105] In one aspect, for each symbol, the corresponding SRS comb offset value in the SRS hopping pattern may depend on the symbol number within the SRS resource. That is, the SRS hopping pattern may be based on the SRS comb pattern of the configured pattern (e.g., Table 2), and the SRS comb pattern may be different for two different groups of X consecutive symbols. For example, at a comb interval (e.g., K TC ) is 8, the number of OFDM symbols may be configured as N=2*X=8, and eight (8) OFDM symbols may be divided into two groups of four (4) consecutive OFDM symbols. The first group of four (4) OFDM symbols may be associated with the offset pattern (0, 4, 2, 6), and the second group of four (4) OFDM symbols may be associated with the offset pattern (1, 5, 3, 7).

[0106] On the other hand, for each symbol, the corresponding SRS comb offset value in the SRS hopping pattern may depend on the symbol number within the group of X consecutive symbols. The SRS comb pattern is determined by the SRS comb pattern, and the SRS comb pattern may be the same for two different groups of X consecutive symbols. TC ) is 8, the number of OFDM symbols can be configured as N=2*X=8, and eight (8) OFDM symbols can be divided into two groups of four (4) consecutive OFDM symbols. For each group of four (4) consecutive OFDM symbols, the SRS comb pattern can be associated with an offset pattern (0, 4, 2, 6).

[0107] For example, the SRS hopping pattern can be expressed as here, Can be configured based on (existing) RRC To confirm, may be a value in the comb offset pattern corresponding to symbol l′ (eg, a symbol of an SRS resource or a symbol within a group of consecutive symbols), and It can be a comb offset hopping formula for determining a comb offset value common to all symbols in a group of X consecutive symbols, where K may refer to the time slot number within a frame, l0 may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols, and K may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols. TC In one example, the comb offset hopping formula can be written based on the pseudo-random sequence c(i).

[0108] According to some aspects, the comb offset value commonly configured for X consecutive OFDM symbols in each group can be determined separately for each group, and thus, the first aspect of determining the SRS hopping pattern based on the configured SRS comb pattern (e.g., Table 2) is different from the first aspect of determining the SRS hopping pattern based on the configured SRS comb pattern (e.g., Table 2). There may be no difference in practice between the determined SRS comb pattern and the second aspect of determining the SRS hopping pattern.

[0109] In some aspects, the number of symbols in a group of consecutive symbols may be based on the comb spacing (e.g., K TC =2, 4, 8) and the number of OFDM symbols of the SRS resource (eg, N).

[0110] In one aspect, the number of symbols in a group of consecutive symbols may be configured to be equal to the minimum of the comb spacing and N. Thus, in the case of a group of X consecutive symbols, all comb offsets may be detected. Table 4 illustrates an example of the number of symbols (e.g., X) in a group of consecutive symbols.

[0111] <![CDATA[Tooth pitch (K TC )]]> N＝1 N＝2 N＝4 N＝8 N＝12 2 X＝1 X＝2 X＝2 - - 4 - X＝2 X＝4 X＝4 X＝4 8 - - X＝4 X＝8 X=8, followed by another X=4

[0112] Table 4.K TC , N, and the number of symbols in a group of consecutive symbols (e.g., X)

[0113] When the comb tooth spacing is 8 (for example, K TC =8) and the number of OFDM symbols is 12 (e.g., N=12), the number of symbols in a group of consecutive symbols may be determined to be eight (8), and the first group of symbols may include eight (8) symbols and the second group of symbols may include the remaining four (4) symbols.

[0114] On the other hand, the number of symbols (eg, X) in a group of consecutive symbols may be configured so that the comb tooth interval (eg, K TC ) divided by X is an integer such that in the case of a group of X symbols, a subset of comb offsets can be uniformly detected. When N is greater than the comb spacing, the case of X=N may or may not be a possible choice. That is, the number of symbols in a group of consecutive OFDM symbols (e.g., X) may be the number of OFDM symbols of the SRS (e.g., N) or a divisor of the number of OFDM symbols of the SRS (e.g., N) that is not greater than the comb spacing (e.g., K). TC). Thus, as provided in Table 5, multiple numbers (e.g., X) of symbols in a group of consecutive symbols are available. The UE may select a number (e.g., X) of symbols in a group of consecutive symbols from a set of available numbers. In one example, the number of symbols (e.g., X) may be received as an RRC message from a network node. In another example, a default configuration of the number of symbols (e.g., X) in a group of consecutive symbols may be provided to the UE and the network node.

[0115] Here, the number of underlined lines X may be greater than the comb tooth spacing (eg, K TC ) and may not be applicable.

[0116] <![CDATA[Tooth pitch (K TC )]]> N＝1 N＝2 N＝4 N＝8 N＝12 2 X＝1 X＝1,2 X＝1,2,4 - - 4 - X＝1,2 X＝1,2,4 X＝1,2,4,8 X＝1,2,4,12 8 - - X＝1,2,4 X＝1,2,4,8 X＝1,2,4,8,12

[0117] Table 5. K TC , N, and the number of symbols in a group of consecutive symbols (e.g., X)

[0118] Fig. 7A and Figure 7B 700 and 750 are examples of comb offset hopping patterns configured for a subset of symbols. Fig. 7A A first example 700 including a time domain orthogonal cover code (TD-OCC) is illustrated. An SRS resource configured to apply TD-OCC across a group of Y symbols may also be configured to apply a pseudo-random comb offset hopping, and the unit of the hopping may be configured by a group of Y OFDM symbols on which TD-OCC is applied. That is, a group (or subset) of consecutive symbols may correspond to a group of Y OFDM symbols on which TD-OCC is configured to be applied. The hopping formula may be a function of the symbol number within the time slot of the first symbol in the group of Y symbols based at least in part on the time slot number within the radio frame and the time slot number of the first symbol in the group of Y symbols. Therefore, in the comb offset hopping mode, all SRS symbols on which TD-OCC is applied may have the same comb offset (e.g., occupying the same RE in the frequency domain). In one aspect, the Y symbols may be continuous or may not be continuous.

[0119] The first example 700 shows that the comb teeth spacing may be 4 (eg, K TC =4), the number of OFDM symbols may be four (e.g., N=4), and Y may be two (2) (e.g., the TD-OCC length applied on 2 symbols is 2). The hopping pattern may be determined as a comb offset of zero (0) for the first 2 symbols, and a comb offset of three (3) for the last 2 symbols. According to the current implementation, the same comb offset may be maintained within the 2 symbols on which TD-OCC is applied.

[0120] Figure 7BA second example 750 including a repetition factor (e.g., R) is illustrated. An SRS resource configured with a repetition factor R may also be configured to apply a pseudo-random comb offset hopping, and the unit of the hopping may be configured as a group of R consecutive OFDM symbols in the same hopping frequency. That is, a group (or subset) of consecutive symbols may correspond to a group of R consecutive OFDM symbols on which R repetitions of the SRS may be sent. The hopping pattern may be a function of a time slot number based at least in part on a radio frame and a symbol number within a time slot of a first symbol in a group of R consecutive symbols. Thus, in a comb offset hopping pattern, all SRS symbols in the same hopping frequency may have the same comb offset (e.g., occupying the same RE in the frequency domain).

[0121] The second example 750 shows that the comb teeth spacing can be 4 (eg, K TC =4), the number of OFDM symbols may be four (e.g., N=4), and R may be two (2) (e.g., two hops, each with 2 symbols). The hopping pattern may be determined as a comb offset of zero (0) for the first 2 symbols, and a comb offset of three (3) for the last 2 symbols. According to the current implementation, the same comb offset may be maintained within the 2 symbols on which TD-OCC is applied.

[0122] Figure 8 The present invention is a call flow diagram 800 of a method of wireless communication. The call flow diagram 800 may include a UE 802 and a network node 804. The network node 804 may configure at least one SRS hopping configuration associated with an SRS hopping pattern to the UE 802, and the UE 802 and the network node 804 may obtain the SRS hopping pattern based on the at least one SRS hopping configuration and the at least one hopping offset. Here, the SRS hopping pattern may include one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities may be associated with the same hopping offset. Therefore, the SRS hopping pattern may be configured to provide randomization while maintaining the specific properties of the staggered SRS comb pattern with uniformly spaced comb offsets, so that an increased number of REs can be uniformly detected.

[0123] At 806, the network node 804 may send at least one SRS hopping configuration for the UE 802. The UE 802 may receive the at least one SRS hopping configuration from the network node 804. The at least one SRS hopping configuration may include at least one of a comb tooth interval number and / or a number of multiple SRS transmission opportunities. Here, the number of multiple SRS transmission opportunities indicates how many SRS transmission opportunities are configured.

[0124] At 810, UE 802 may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern comprising one or more subsets of the hopping pattern, and each subset of the hopping pattern comprising a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. Here, 810 may include 812 and 814.

[0125] In one aspect, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be based on at least one of the number of comb tooth intervals or the number of multiple SRS transmission opportunities received at 806. Here, the number of SRS transmission opportunities indicates how many SRS transmission opportunities are included in each subset of consecutive SRS transmission opportunities. For each symbol, the corresponding SRS comb tooth offset value in the SRS hopping pattern may depend on the symbol number within the group of X consecutive symbols. That is, it may be based on The SRS comb pattern is determined by, and the SRS comb pattern may be the same for two different groups of X consecutive symbols. The SRS hopping pattern may be expressed as here, Can be configured based on (existing) RRC To confirm, may be a value in the comb offset pattern corresponding to symbol l′ (eg, a symbol of an SRS resource or a symbol within a group of consecutive symbols), and It can be a comb offset hopping formula for determining a comb offset value common to all symbols in a group of X consecutive symbols, where K may refer to the time slot number within a frame, l0 may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols, and K may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols. TC In one example, the comb offset hopping formula can be written based on the pseudo-random sequence c(i).

[0126] First, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be equal to the minimum of the number of comb tooth intervals and the number of multiple SRS transmission opportunities. That is, the number of symbols in a group of consecutive symbols may be configured to be equal to the minimum of the comb tooth interval and N. Therefore, in the case of a group of X consecutive symbols, all comb tooth offsets may be detected.

[0127] Second, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which divisor is not greater than the number of comb tooth intervals. That is, the number of symbols in a group of consecutive OFDM symbols (e.g., X) may be the number of OFDM symbols of SRS (e.g., N) or a divisor of the number of OFDM symbols of SRS (e.g., N), which divisor is not greater than the comb tooth interval (e.g., K). TC ). When N is larger than the comb tooth spacing (for example, K TC ), the case where X=N may or may not be applicable.

[0128] In one example, a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be configured for UE 802. That is, UE 802 and network node 804 may be configured with a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities for each possible combination. In another example, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be received from network node 804 via an RRC message at 806.

[0129] In another aspect, the SRS hopping pattern may be based at least in part on slot numbers of a plurality of SRS transmission opportunities within a radio frame and a symbol number of a first symbol in a subset of consecutive SRS transmission opportunities within a slot.

[0130] In one example, multiple SRS transmission opportunities may be configured to apply TD-OCC across a subset of consecutive SRS transmission opportunities. An SRS resource configured to apply TD-OCC across a group of Y symbols may also be configured to apply a pseudo-random comb offset hopping, and the unit of the hopping may be configured by a group of Y OFDM symbols on which TD-OCC is applied. That is, a group (or subset) of consecutive symbols may correspond to a group of Y OFDM symbols on which TD-OCC is configured to be applied. The hopping formula may be a function of the symbol number within the time slot of the first symbol in the group of Y symbols based at least in part on the time slot number within the radio frame and the time slot number of the first symbol in the group of Y symbols. Therefore, in the comb offset hopping mode, all SRS symbols on which TD-OCC is applied may have the same comb offset (e.g., occupying the same RE in the frequency domain). In one aspect, the Y symbols may be continuous or may not be continuous.

[0131] In another example, multiple SRS transmission opportunities may be configured to apply repetition of SRS across a subset of consecutive SRS transmission opportunities. SRS resources configured with a repetition factor R may also be configured to apply pseudo-random comb offset hopping, and the unit of hopping may be configured as a group of R consecutive OFDM symbols in the same hopping frequency. That is, a group (or subset) of consecutive symbols may correspond to a group of R consecutive OFDM symbols on which R repetitions of SRS may be sent. The hopping formula may be a function of the symbol number within the time slot based at least in part on the time slot number within the radio frame and the first symbol in the group of R consecutive symbols. Therefore, in the comb offset hopping mode, all SRS symbols in the same hopping frequency may have the same comb offset (e.g., occupying the same RE in the frequency domain).

[0132] At 812, UE 802 may select an SRS comb offset pattern for a plurality of SRS transmission opportunities based on at least one SRS hopping configuration.

[0133] At 814, UE 802 may apply an SRS comb offset pattern for a plurality of SRS transmission opportunities relative to a hopping offset associated with one or more subsets of the hopping pattern.

[0134] The SRS comb offset pattern for multiple SRS transmission opportunities may be selected based on the number of comb intervals received at 806 and the number of multiple SRS transmission opportunities. In one aspect, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. On the other hand, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities. In one example, the same hopping offset may be associated with one or more subsets of the hopping pattern. In another example, different hopping offsets may be associated with one or more subsets of the hopping pattern.

[0135] At 820, the network node 804 may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern comprising one or more subsets of the hopping pattern, and each subset of the hopping pattern comprising a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. Here, 820 may include 822 and 824.

[0136] In one aspect, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be based on at least one of the number of comb intervals or the number of multiple SRS transmission opportunities sent at 806. For each symbol, the corresponding SRS comb offset value in the SRS hopping pattern may depend on the symbol number within the group of X consecutive symbols. That is, it may be based on The SRS comb pattern is determined by, and the SRS comb pattern may be the same for two different groups of X consecutive symbols. The SRS hopping pattern may be expressed as here, Can be configured based on (existing) RRC To confirm, may be a value in the comb offset pattern corresponding to symbol l′ (eg, a symbol of an SRS resource or a symbol within a group of consecutive symbols), and It can be a comb offset hopping formula for determining a comb offset value common to all symbols in a group of X consecutive symbols, where K may refer to the time slot number within a frame, l0 may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols, and K may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols. TC In one example, the comb offset hopping formula can be written based on the pseudo-random sequence c(i).

[0137] First, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be equal to the minimum of the number of comb tooth intervals and the number of multiple SRS transmission opportunities. That is, the number of symbols in a group of consecutive symbols may be configured to be equal to the minimum of the comb tooth interval and N. Therefore, in the case of a group of X consecutive symbols, all comb tooth offsets may be detected.

[0138] Second, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which divisor is not greater than the number of comb tooth intervals. That is, the number of symbols in a group of consecutive OFDM symbols (e.g., X) may be the number of OFDM symbols of SRS (e.g., N) or a divisor of the number of OFDM symbols of SRS (e.g., N), which divisor is not greater than the comb tooth interval (e.g., K). TC ). When N is larger than the comb tooth spacing (for example, K TC ), the case where X=N may or may not be applicable.

[0139] In one example, a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be configured for UE 802. That is, UE 802 and network node 804 may be configured with a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities for each possible combination. In another example, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be sent to UE 802 via an RRC message at 806.

[0140] In another aspect, the SRS hopping pattern may be based at least in part on slot numbers of a plurality of SRS transmission opportunities within a radio frame and a symbol number of a first symbol in a subset of consecutive SRS transmission opportunities within a slot.

[0141] In one example, multiple SRS transmission opportunities may be configured to apply TD-OCC across a subset of consecutive SRS transmission opportunities. An SRS resource configured to apply TD-OCC across a group of Y symbols may also be configured to apply a pseudo-random comb offset hopping, and the unit of the hopping may be configured by a group of Y OFDM symbols on which TD-OCC is applied. That is, a group (or subset) of consecutive symbols may correspond to a group of Y OFDM symbols on which TD-OCC is configured to be applied. The hopping formula may be a function of the symbol number within the time slot of the first symbol in the group of Y symbols based at least in part on the time slot number within the radio frame and the time slot number of the first symbol in the group of Y symbols. Therefore, in the comb offset hopping mode, all SRS symbols on which TD-OCC is applied may have the same comb offset (e.g., occupying the same RE in the frequency domain). In one aspect, the Y symbols may be continuous or may not be continuous.

[0142] In another example, multiple SRS transmission opportunities may be configured to apply repetition of SRS across a subset of consecutive SRS transmission opportunities. SRS resources configured with a repetition factor R may also be configured to apply pseudo-random comb offset hopping, and the unit of hopping may be configured as a group of R consecutive OFDM symbols in the same hopping frequency. That is, a group (or subset) of consecutive symbols may correspond to a group of R consecutive OFDM symbols on which R repetitions of SRS may be sent. The hopping formula may be a function of the symbol number within the time slot based at least in part on the time slot number within the radio frame and the first symbol in the group of R consecutive symbols. Therefore, in the comb offset hopping mode, all SRS symbols in the same hopping frequency may have the same comb offset (e.g., occupying the same RE in the frequency domain).

[0143] At 822, the network node 804 may select an SRS comb offset pattern for a plurality of SRS transmission opportunities based on at least one SRS hopping configuration.

[0144] At 824, the network node 804 may apply an SRS comb offset pattern for a plurality of SRS transmission opportunities relative to a hopping offset associated with one or more subsets of the hopping pattern.

[0145] The SRS comb offset pattern for multiple SRS transmission opportunities may be selected based on the number of comb intervals sent at 806 and the number of multiple SRS transmission opportunities. In one aspect, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. On the other hand, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities. In one example, the same hopping offset may be associated with one or more subsets of the hopping pattern. In another example, different hopping offsets may be associated with one or more subsets of the hopping pattern.

[0146] At 830, UE 802 may transmit an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. Network node 804 may obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. The SRS hopping pattern may provide randomization while maintaining specific properties of a staggered SRS comb pattern with uniformly spaced comb offsets, such that an increased number of REs may be uniformly probed.

[0147] Fig. 9 900 is a flowchart of a method for wireless communication. The method may be performed by a UE (e.g., UE 104 / 404 / 902; device 1304). The UE may receive at least one SRS hopping configuration associated with an SRS hopping pattern from a network node, and may obtain the SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset. Here, the SRS hopping pattern may include one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities may be associated with the same hopping offset. Therefore, the SRS hopping pattern may be configured to provide randomization while maintaining specific properties of a staggered SRS comb pattern with evenly spaced comb offsets, so that an increased number of REs can be uniformly detected.

[0148] At 906, the UE may receive at least one SRS hopping configuration from the network node. The at least one SRS hopping configuration may include at least one of a comb tooth interval number and / or a number of multiple SRS transmission opportunities. Here, the number of multiple SRS transmission opportunities indicates how many SRS transmission opportunities are configured. For example, at 806, the UE 802 may receive at least one SRS hopping configuration from the network node 804. In addition, 906 may be performed by the SRS hopping configuration component 198.

[0149] At 910, the UE may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. For example, at 810, the UE 802 may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. In addition, 910 may be performed by the SRS hopping configuration component 198. Here, 910 may include 912 and 914.

[0150] In one aspect, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be based on at least one of the number of comb tooth intervals or the number of multiple SRS transmission opportunities received at 906. Here, the number of SRS transmission opportunities indicates how many SRS transmission opportunities are included in each subset of consecutive SRS transmission opportunities. For each symbol, the corresponding SRS comb tooth offset value of the SRS hopping pattern may depend on the symbol number within the group of X consecutive symbols. That is, it may be based on The SRS comb pattern is determined by, and the SRS comb pattern may be the same for two different groups of X consecutive symbols. The SRS hopping pattern may be expressed as here, Can be configured based on (existing) RRC To confirm, may be a value in the comb offset pattern corresponding to symbol l′ (eg, a symbol of an SRS resource or a symbol within a group of consecutive symbols), and It can be a comb offset hopping formula for determining a comb offset value common to all symbols in a group of X consecutive symbols, where K may refer to the time slot number within a frame, l0 may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols, and K may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols. TC In one example, the comb offset hopping formula can be written based on the pseudo-random sequence c(i).

[0151] First, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be equal to the minimum of the number of comb tooth intervals and the number of multiple SRS transmission opportunities. That is, the number of symbols in a group of consecutive symbols may be configured to be equal to the minimum of the comb tooth interval and N. Therefore, in the case of a group of X consecutive symbols, all comb tooth offsets may be detected.

[0152] Second, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which divisor is not greater than the number of comb tooth intervals. That is, the number of symbols in a group of consecutive OFDM symbols (e.g., X) may be the number of OFDM symbols of SRS (e.g., N) or a divisor of the number of OFDM symbols of SRS (e.g., N), which divisor is not greater than the comb tooth interval (e.g., K). TC ). When N is larger than the comb tooth spacing (for example, K TC ), the case where X=N may or may not be applicable.

[0153] In one example, a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be configured for the UE. That is, the UE and the network node may be configured with a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities for each possible combination. In another example, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be received from the network node via an RRC message at 906.

[0154] In another aspect, the SRS hopping pattern may be based at least in part on slot numbers of a plurality of SRS transmission opportunities within a radio frame and a symbol number of a first symbol in a subset of consecutive SRS transmission opportunities within a slot.

[0155] In one example, multiple SRS transmission opportunities may be configured to apply TD-OCC across a subset of consecutive SRS transmission opportunities. An SRS resource configured to apply TD-OCC across a group of Y symbols may also be configured to apply a pseudo-random comb offset hopping, and the unit of the hopping may be configured by a group of Y OFDM symbols on which TD-OCC is applied. That is, a group (or subset) of consecutive symbols may correspond to a group of Y OFDM symbols on which TD-OCC is configured to be applied. The hopping formula may be a function of the symbol number within the time slot of the first symbol in the group of Y symbols based at least in part on the time slot number within the radio frame and the time slot number of the first symbol in the group of Y symbols. Therefore, in the comb offset hopping mode, all SRS symbols on which TD-OCC is applied may have the same comb offset (e.g., occupying the same RE in the frequency domain). In one aspect, the Y symbols may be continuous or may not be continuous.

[0156] In another example, multiple SRS transmission opportunities may be configured to apply repetition of SRS across a subset of consecutive SRS transmission opportunities. SRS resources configured with a repetition factor R may also be configured to apply pseudo-random comb offset hopping, and the unit of hopping may be configured as a group of R consecutive OFDM symbols in the same hopping frequency. That is, a group (or subset) of consecutive symbols may correspond to a group of R consecutive OFDM symbols on which R repetitions of SRS may be sent. The hopping formula may be a function of the symbol number within the time slot based at least in part on the time slot number within the radio frame and the first symbol in the group of R consecutive symbols. Therefore, in the comb offset hopping mode, all SRS symbols in the same hopping frequency may have the same comb offset (e.g., occupying the same RE in the frequency domain).

[0157] At 912, the UE may select an SRS comb offset pattern for multiple SRS transmission opportunities based on at least one SRS hopping configuration. For example, at 812, the UE 802 may select an SRS comb offset pattern for multiple SRS transmission opportunities based on at least one SRS hopping configuration. In addition, 912 may be performed by the SRS hopping configuration component 198.

[0158] At 914, the UE may apply an SRS comb offset pattern for a plurality of SRS transmission opportunities relative to a hopping offset associated with one or more subsets of the hopping pattern. For example, at 814, the UE 802 may apply an SRS comb offset pattern for a plurality of SRS transmission opportunities relative to a hopping offset associated with one or more subsets of the hopping pattern. In addition, 914 may be performed by the SRS hopping configuration component 198.

[0159] The SRS comb offset pattern for multiple SRS transmission opportunities may be selected based on the number of comb intervals received at 906 and the number of multiple SRS transmission opportunities. In one aspect, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. On the other hand, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities. In one example, the same hopping offset may be associated with one or more subsets of the hopping pattern. In another example, different hopping offsets may be associated with one or more subsets of the hopping pattern.

[0160] At 930, the UE may transmit an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. The SRS hopping pattern may provide randomization while maintaining the specific properties of the staggered SRS comb pattern with uniformly spaced comb offsets, so that an increased number of REs may be uniformly detected. For example, at 830, the UE 802 may transmit an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. In addition, 930 may be performed by the SRS hopping configuration component 198.

[0161] Fig.10 1000 is a flowchart of a method of wireless communication. The method may be performed by a UE (e.g., UE 104 / 404 / 902; device 1304). The UE may receive at least one SRS hopping configuration associated with an SRS hopping pattern from a network node, and may obtain the SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset. Here, the SRS hopping pattern may include one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities may be associated with the same hopping offset. Therefore, the SRS hopping pattern may be configured to provide randomization while maintaining specific properties of a staggered SRS comb pattern with evenly spaced comb offsets, so that an increased number of REs can be uniformly detected.

[0162] At 1006, the UE may receive at least one SRS hopping configuration from the network node. The at least one SRS hopping configuration may include at least one of a comb tooth interval number and / or a number of multiple SRS transmission opportunities. Here, the number of multiple SRS transmission opportunities indicates how many SRS transmission opportunities are configured. For example, at 806, the UE 802 may receive at least one SRS hopping configuration from the network node 804. In addition, 1006 may be performed by the SRS hopping configuration component 198.

[0163] At 1010, the UE may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. For example, at 810, the UE 802 may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. In addition, 1010 may be performed by the SRS hopping configuration component 198. Here, 1010 may include 1012 and 1014.

[0164] In one aspect, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be based on at least one of the number of comb tooth intervals or the number of multiple SRS transmission opportunities received at 1006. Here, the number of SRS transmission opportunities indicates how many SRS transmission opportunities are included in each subset of consecutive SRS transmission opportunities. For each symbol, the corresponding SRS comb tooth offset value in the SRS hopping pattern may depend on the symbol number within the group of X consecutive symbols. That is, it may be based on The SRS comb pattern is determined by, and the SRS comb pattern may be the same for two different groups of X consecutive symbols. The SRS hopping pattern may be expressed as here, Can be configured based on (existing) RRC To confirm, may be a value in the comb offset pattern corresponding to symbol l′ (eg, a symbol of an SRS resource or a symbol within a group of consecutive symbols), and It can be a comb offset hopping formula for determining a comb offset value common to all symbols in a group of X consecutive symbols, where K may refer to the time slot number within a frame, l0 may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols, and K may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols. TC In one example, the comb offset hopping formula can be written based on the pseudo-random sequence c(i).

[0165] First, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be equal to the minimum of the number of comb tooth intervals and the number of multiple SRS transmission opportunities. That is, the number of symbols in a group of consecutive symbols may be configured to be equal to the minimum of the comb tooth interval and N. Therefore, in the case of a group of X consecutive symbols, all comb tooth offsets may be detected.

[0166] Second, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which divisor is not greater than the number of comb tooth intervals. That is, the number of symbols in a group of consecutive OFDM symbols (e.g., X) may be the number of OFDM symbols of SRS (e.g., N) or a divisor of the number of OFDM symbols of SRS (e.g., N), which divisor is not greater than the comb tooth interval (e.g., K). TC ). When N is larger than the comb tooth spacing (for example, K TC ), the case where X=N may or may not be applicable.

[0167] In one example, a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be configured for the UE. That is, the UE and the network node may be configured with a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities for each possible combination. In another example, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be received from the network node via an RRC message at 1006.

[0168] In another aspect, the SRS hopping pattern may be based at least in part on slot numbers of a plurality of SRS transmission opportunities within a radio frame and a symbol number of a first symbol in a subset of consecutive SRS transmission opportunities within a slot.

[0169] In one example, multiple SRS transmission opportunities may be configured to apply TD-OCC across a subset of consecutive SRS transmission opportunities. An SRS resource configured to apply TD-OCC across a group of Y symbols may also be configured to apply a pseudo-random comb offset hopping, and the unit of the hopping may be configured by a group of Y OFDM symbols on which TD-OCC is applied. That is, a group (or subset) of consecutive symbols may correspond to a group of Y OFDM symbols on which TD-OCC is configured to be applied. The hopping formula may be a function of the symbol number within the time slot of the first symbol in the group of Y symbols based at least in part on the time slot number within the radio frame and the time slot number of the first symbol in the group of Y symbols. Therefore, in the comb offset hopping mode, all SRS symbols on which TD-OCC is applied may have the same comb offset (e.g., occupying the same RE in the frequency domain). In one aspect, the Y symbols may be continuous or may not be continuous.

[0170] In another example, multiple SRS transmission opportunities may be configured to apply repetition of SRS across a subset of consecutive SRS transmission opportunities. SRS resources configured with a repetition factor R may also be configured to apply pseudo-random comb offset hopping, and the unit of hopping may be configured as a group of R consecutive OFDM symbols in the same hopping frequency. That is, a group (or subset) of consecutive symbols may correspond to a group of R consecutive OFDM symbols on which R repetitions of SRS may be sent. The hopping formula may be a function of the symbol number within the time slot based at least in part on the time slot number within the radio frame and the first symbol in the group of R consecutive symbols. Therefore, in the comb offset hopping mode, all SRS symbols in the same hopping frequency may have the same comb offset (e.g., occupying the same RE in the frequency domain).

[0171] The SRS comb offset pattern for multiple SRS transmission opportunities may be selected based on the number of comb intervals received at 1006 and the number of multiple SRS transmission opportunities. In one aspect, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. On the other hand, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities. In one example, the same hopping offset may be associated with one or more subsets of the hopping pattern. In another example, different hopping offsets may be associated with one or more subsets of the hopping pattern.

[0172] At 1030, the UE may transmit an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. The SRS hopping pattern may provide randomization while maintaining the specific properties of the staggered SRS comb pattern with uniformly spaced comb offsets, so that an increased number of REs may be uniformly detected. For example, at 830, the UE 802 may transmit an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. In addition, 1030 may be performed by the SRS hopping configuration component 198.

[0173] Fig.11 1100 is a flowchart of a method of wireless communication. The method may be performed by a network node (e.g., base station 102; TRP406; network node 804; network entity 1402 / 1660). The network node may configure at least one SRS hopping configuration associated with an SRS hopping pattern to a UE, and obtain the SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset. Here, the SRS hopping pattern may include one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities may be associated with the same hopping offset. Therefore, the SRS hopping pattern may be configured to provide randomization while maintaining specific properties of a staggered SRS comb pattern with evenly spaced comb offsets, so that an increased number of REs can be uniformly detected.

[0174] At 1106, the network node may send at least one SRS hopping configuration for UE 802. The at least one SRS hopping configuration may include at least one of a comb tooth interval number and / or a number of multiple SRS transmission opportunities. Here, the number of multiple SRS transmission opportunities indicates how many SRS transmission opportunities are configured. For example, at 806, the network node 804 may send at least one SRS hopping configuration for UE 802. In addition, 1106 may be performed by SRS hopping configuration component 199.

[0175] At 1120, the network node may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. For example, at 820, the network node 804 may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. In addition, 1120 may be performed by the SRS hopping configuration component 199. 1120 may include 1122 and 1124.

[0176] In one aspect, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be based on at least one of the number of comb tooth intervals or the number of multiple SRS transmission opportunities received at 1106. Here, the number of SRS transmission opportunities indicates how many SRS transmission opportunities are included in each subset of consecutive SRS transmission opportunities. For each symbol, the corresponding SRS comb tooth offset value in the SRS hopping pattern may depend on the symbol number within the group of X consecutive symbols. That is, it may be based on The SRS comb pattern is determined by, and the SRS comb pattern may be the same for two different groups of X consecutive symbols. The SRS hopping pattern may be expressed as here, Can be configured based on (existing) RRC To confirm, may be a value in the comb offset pattern corresponding to symbol l′ (eg, a symbol of an SRS resource or a symbol within a group of consecutive symbols), and It can be a comb offset hopping formula for determining a comb offset value common to all symbols in a group of X consecutive symbols, where K may refer to the time slot number within a frame, l0 may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols, and K may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols. TC In one example, the comb offset hopping formula can be written based on the pseudo-random sequence c(i).

[0177] First, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be equal to the minimum of the number of comb tooth intervals and the number of multiple SRS transmission opportunities. That is, the number of symbols in a group of consecutive symbols may be configured to be equal to the minimum of the comb tooth interval and N. Therefore, in the case of a group of X consecutive symbols, all comb tooth offsets may be detected.

[0178] Second, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which divisor is not greater than the number of comb tooth intervals. That is, the number of symbols in a group of consecutive OFDM symbols (e.g., X) may be the number of OFDM symbols of SRS (e.g., N) or a divisor of the number of OFDM symbols of SRS (e.g., N), which divisor is not greater than the comb tooth interval (e.g., K). TC ). When N is larger than the comb tooth spacing (for example, K TC ), the case where X=N may or may not be applicable.

[0179] In one example, a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be configured for the UE. That is, the UE and the network node may be configured with a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities for each possible combination. In another example, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be received from the network node via an RRC message at 1106.

[0180] In another aspect, the SRS hopping pattern may be based at least in part on slot numbers of a plurality of SRS transmission opportunities within a radio frame and a symbol number of a first symbol in a subset of consecutive SRS transmission opportunities within a slot.

[0181] In one example, multiple SRS transmission opportunities may be configured to apply TD-OCC across a subset of consecutive SRS transmission opportunities. An SRS resource configured to apply TD-OCC across a group of Y symbols may also be configured to apply a pseudo-random comb offset hopping, and the unit of the hopping may be configured by a group of Y OFDM symbols on which TD-OCC is applied. That is, a group (or subset) of consecutive symbols may correspond to a group of Y OFDM symbols on which TD-OCC is configured to be applied. The hopping formula may be a function of the symbol number within the time slot of the first symbol in the group of Y symbols based at least in part on the time slot number within the radio frame and the time slot number of the first symbol in the group of Y symbols. Therefore, in the comb offset hopping mode, all SRS symbols on which TD-OCC is applied may have the same comb offset (e.g., occupying the same RE in the frequency domain). In one aspect, the Y symbols may be continuous or may not be continuous.

[0182] In another example, multiple SRS transmission opportunities may be configured to apply repetition of SRS across a subset of consecutive SRS transmission opportunities. SRS resources configured with a repetition factor R may also be configured to apply pseudo-random comb offset hopping, and the unit of hopping may be configured as a group of R consecutive OFDM symbols in the same hopping frequency. That is, a group (or subset) of consecutive symbols may correspond to a group of R consecutive OFDM symbols on which R repetitions of SRS may be sent. The hopping formula may be a function of the symbol number within the time slot based at least in part on the time slot number within the radio frame and the first symbol in the group of R consecutive symbols. Therefore, in the comb offset hopping mode, all SRS symbols in the same hopping frequency may have the same comb offset (e.g., occupying the same RE in the frequency domain).

[0183] At 1122, the network node may select an SRS comb offset pattern for multiple SRS transmission opportunities based on at least one SRS hopping configuration. For example, at 822, the network node 804 may select an SRS comb offset pattern for multiple SRS transmission opportunities based on at least one SRS hopping configuration. In addition, 1122 may be performed by the SRS hopping configuration component 199.

[0184] At 1124, the network node may apply an SRS comb offset pattern for a plurality of SRS transmission opportunities relative to a hopping offset associated with one or more subsets of the hopping pattern. For example, at 824, the network node 804 may apply an SRS comb offset pattern for a plurality of SRS transmission opportunities relative to a hopping offset associated with one or more subsets of the hopping pattern. In addition, 1124 may be performed by the SRS hopping configuration component 199.

[0185] The SRS comb offset pattern for multiple SRS transmission opportunities may be selected based on the number of comb intervals sent at 1106 and the number of multiple SRS transmission opportunities. In one aspect, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. On the other hand, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities. In one example, the same hopping offset may be associated with one or more subsets of the hopping pattern. In another example, different hopping offsets may be associated with one or more subsets of the hopping pattern.

[0186] At 1130, the network node may obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. The SRS hopping pattern may provide randomization while maintaining the specific properties of the staggered SRS comb pattern with uniformly spaced comb offsets, so that an increased number of REs may be uniformly detected. For example, at 830, the network node 804 may obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. In addition, 1130 may be performed by the SRS hopping configuration component 199.

[0187] Fig.12 1200 is a flowchart of a method of wireless communication. The method may be performed by a network node (e.g., base station 102; TRP406; network node 804; network entity 1402 / 1660). The network node may configure at least one SRS hopping configuration associated with an SRS hopping pattern to a UE, and obtain the SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset. Here, the SRS hopping pattern may include one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities may be associated with the same hopping offset. Therefore, the SRS hopping pattern may be configured to provide randomization while maintaining specific properties of a staggered SRS comb pattern with evenly spaced comb offsets, so that an increased number of REs can be uniformly detected.

[0188] At 1206, the network node may send at least one SRS hopping configuration for UE 802. The at least one SRS hopping configuration may include at least one of a comb tooth interval number and / or a number of multiple SRS transmission opportunities. Here, the number of multiple SRS transmission opportunities indicates how many SRS transmission opportunities are configured. For example, at 806, the network node 804 may send at least one SRS hopping configuration for UE 802. In addition, 1206 may be performed by SRS hopping configuration component 199.

[0189] At 1220, the network node may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. For example, at 820, the network node 804 may obtain an SRS hopping pattern based on at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset. In addition, 1220 may be performed by the SRS hopping configuration component 199. 1220 may include 1222 and 1224.

[0190] In one aspect, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be based on at least one of the number of comb tooth intervals or the number of multiple SRS transmission opportunities received at 1206. Here, the number of SRS transmission opportunities indicates how many SRS transmission opportunities are included in each subset of consecutive SRS transmission opportunities. For each symbol, the corresponding SRS comb tooth offset value in the SRS hopping pattern may depend on the symbol number within the group of X consecutive symbols. That is, it may be based on The SRS comb pattern is determined by, and the SRS comb pattern may be the same for two different groups of X consecutive symbols. The SRS hopping pattern may be expressed as here, Can be configured based on (existing) RRC To confirm, may be a value in the comb offset pattern corresponding to symbol l′ (eg, a symbol of an SRS resource or a symbol within a group of consecutive symbols), and It can be a comb offset hopping formula for determining a comb offset value common to all symbols in a group of X consecutive symbols, where K may refer to the time slot number within a frame, l0 may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols, and K may refer to the symbol number (within a time slot) of the first symbol in a group of X consecutive symbols. TC In one example, the comb offset hopping formula can be written based on the pseudo-random sequence c(i).

[0191] First, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be equal to the minimum of the number of comb tooth intervals and the number of multiple SRS transmission opportunities. That is, the number of symbols in a group of consecutive symbols may be configured to be equal to the minimum of the comb tooth interval and N. Therefore, in the case of a group of X consecutive symbols, all comb tooth offsets may be detected.

[0192] Second, the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities may be the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which divisor is not greater than the number of comb tooth intervals. That is, the number of symbols in a group of consecutive OFDM symbols (e.g., X) may be the number of OFDM symbols of SRS (e.g., N) or a divisor of the number of OFDM symbols of SRS (e.g., N), which divisor is not greater than the comb tooth interval (e.g., K). TC ). When N is larger than the comb tooth spacing (for example, K TC ), the case where X=N may or may not be applicable.

[0193] In one example, a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be configured for the UE. That is, the UE and the network node may be configured with a default number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities for each possible combination. In another example, the number of SRS transmission opportunities in a subset of consecutive SRS transmission opportunities may be received from the network node via an RRC message at 1206.

[0194] In another aspect, the SRS hopping pattern may be based at least in part on slot numbers of a plurality of SRS transmission opportunities within a radio frame and a symbol number of a first symbol in a subset of consecutive SRS transmission opportunities within a slot.

[0195] In one example, multiple SRS transmission opportunities may be configured to apply TD-OCC across a subset of consecutive SRS transmission opportunities. An SRS resource configured to apply TD-OCC across a group of Y symbols may also be configured to apply a pseudo-random comb offset hopping, and the unit of the hopping may be configured by a group of Y OFDM symbols on which TD-OCC is applied. That is, a group (or subset) of consecutive symbols may correspond to a group of Y OFDM symbols on which TD-OCC is configured to be applied. The hopping formula may be a function of the symbol number within the time slot of the first symbol in the group of Y symbols based at least in part on the time slot number within the radio frame and the time slot number of the first symbol in the group of Y symbols. Therefore, in the comb offset hopping mode, all SRS symbols on which TD-OCC is applied may have the same comb offset (e.g., occupying the same RE in the frequency domain). In one aspect, the Y symbols may be continuous or may not be continuous.

[0196] In another example, multiple SRS transmission opportunities may be configured to apply repetition of SRS across a subset of consecutive SRS transmission opportunities. SRS resources configured with a repetition factor R may also be configured to apply pseudo-random comb offset hopping, and the unit of hopping may be configured as a group of R consecutive OFDM symbols in the same hopping frequency. That is, a group (or subset) of consecutive symbols may correspond to a group of R consecutive OFDM symbols on which R repetitions of SRS may be sent. The hopping formula may be a function of the symbol number within the time slot based at least in part on the time slot number within the radio frame and the first symbol in the group of R consecutive symbols. Therefore, in the comb offset hopping mode, all SRS symbols in the same hopping frequency may have the same comb offset (e.g., occupying the same RE in the frequency domain).

[0197] The SRS comb offset pattern for multiple SRS transmission opportunities may be selected based on the number of comb intervals sent at 1206 and the number of multiple SRS transmission opportunities. In one aspect, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. On the other hand, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities. In one example, the same hopping offset may be associated with one or more subsets of the hopping pattern. In another example, different hopping offsets may be associated with one or more subsets of the hopping pattern.

[0198] At 1230, the network node may obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. The SRS hopping pattern may provide randomization while maintaining the specific properties of the staggered SRS comb pattern with uniformly spaced comb offsets, so that an increased number of REs may be uniformly detected. For example, at 830, the network node 804 may obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. In addition, 1230 may be performed by the SRS hopping configuration component 199.

[0199] Fig.131300 is a diagram illustrating an example of a hardware implementation for an apparatus 1304. The apparatus 1304 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1304 may include a cellular baseband processor 1324 (also referred to as a modem) coupled to one or more transceivers 1322 (e.g., a cellular RF transceiver). The cellular baseband processor 1324 may include on-chip memory 1324'. In some aspects, the apparatus 1304 may also include one or more subscriber identity module (SIM) cards 1320 and an application processor 1306 coupled to a secure digital (SD) card 1308 and a screen 1310. The application processor 1306 may include on-chip memory 1306'. In some aspects, the device 1304 may also include a Bluetooth module 1312, a WLAN module 1314, an SPS module 1316 (e.g., a GNSS module), one or more sensor modules 1318 (e.g., an atmospheric pressure sensor / altimeter; a motion sensor such as an inertial measurement unit (IMU), a gyroscope, and / or an accelerometer; light detection and ranging (LIDAR), radio-aided detection and ranging (RADAR), sound navigation and ranging (SONAR), a magnetometer, audio, and / or other technologies for positioning), an additional memory module 1326, a power source 1330, and / or a camera 1332. The Bluetooth module 1312, the WLAN module 1314, and the SPS module 1316 may include an on-chip transceiver (TRX) (or in some cases, only a receiver (RX)). The Bluetooth module 1312, the WLAN module 1314, and the SPS module 1316 may include their own dedicated antennas and / or communicate using antennas 1380. The cellular baseband processor 1324 communicates with the UE 104 and / or with the RU associated with the network entity 1302 through the transceiver 1322 via one or more antennas 1380. The cellular baseband processor 1324 and the application processor 1306 may each include a computer-readable medium / memory 1324', 1306', respectively. The additional memory module 1326 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1324', 1306', 1326 may be non-transitory. The cellular baseband processor 1324 and the application processor 1306 are each responsible for general processing, including executing software stored on a computer-readable medium / memory. The software, when executed by the cellular baseband processor 1324 / application processor 1306, enables the cellular baseband processor 1324 / application processor 1306 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 1324 / application processor 1306 when executing the software.The cellular baseband processor 1324 / application processor 1306 may be a component of the UE 350 and may include the memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the device 1304 may be a processor chip (modem and / or application) and include only the cellular baseband processor 1324 and / or the application processor 1306, and in another configuration, the device 1304 may be the entire UE (e.g., see. Figure 3 350) and includes additional modules of device 1304.

[0200] As discussed above, component 198 is configured to: receive at least one SRS hopping configuration from a network node; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and transmit an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. Component 198 may be within the cellular baseband processor 1324, the application processor 1306, or within both the cellular baseband processor 1324 and the application processor 1306. Component 198 may be one or more hardware components specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. As shown, the device 1304 may include a variety of components configured for various functions. In one configuration, the apparatus 1304 (and in particular the cellular baseband processor 1324 and / or the application processor 1306) includes: a component for receiving at least one SRS hopping configuration from a network node; a component for obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern comprising one or more subsets of the hopping pattern, and each subset of the hopping pattern comprising a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and a component for transmitting an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. In one configuration, the component for obtaining the SRS hopping pattern is further configured to: based on the at least one SRS hopping configuration, select an SRS comb offset pattern to generate a staggered SRS comb pattern for multiple SRS transmission opportunities; and apply the SRS comb offset pattern for multiple SRS transmission opportunities relative to the hopping offsets associated with the one or more subsets of the hopping pattern. In one configuration, the at least one SRS hopping configuration includes a comb spacing number and a number of multiple SRS transmission opportunities, and wherein the SRS comb offset pattern for the multiple SRS transmission opportunities is selected based on the comb spacing number and the number of multiple SRS transmission opportunities. In one configuration, the hopping offsets of the multiple SRS hopping patterns for each SRS transmission opportunity are based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. In one configuration, the hopping offsets of the multiple SRS hopping patterns for each SRS transmission opportunity are based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities.In one configuration, the at least one SRS hopping configuration includes a comb tooth interval number and a number of multiple SRS transmission opportunities, and the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is based on at least one of the comb tooth interval number or the number of multiple SRS transmission opportunities. In one configuration, the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is equal to the minimum of the comb tooth interval number and the number of multiple SRS transmission opportunities. In one configuration, the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which is not greater than the comb tooth interval number. In one configuration, the device 1304 (and in particular the cellular baseband processor 1324 and / or the application processor 1306) includes: for receiving the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities from a network node via an RRC message. In one configuration, the device 1304 (and in particular the cellular baseband processor 1324 and / or the application processor 1306) is configured with a default number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities. In one configuration, the SRS hopping pattern is based at least in part on the time slot number of multiple SRS transmission opportunities within a radio frame and the symbol number of the first symbol in a subset of consecutive SRS transmission opportunities within the time slot. In one configuration, multiple SRS transmission opportunities apply TD-OCC across a subset of consecutive SRS transmission opportunities. In one configuration, multiple SRS transmission opportunities apply repetition of SRS across a subset of consecutive SRS transmission opportunities. The component can be a component 198 of the device 1304 configured to perform the functions recorded by the component. As described above, the device 1304 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Therefore, in one configuration, these components may be a TX processor 368, an RX processor 356, and / or a controller / processor 359 configured to perform the functions recorded by the component.

[0201] Fig.141400 is a diagram illustrating an example of a hardware implementation for a network entity 1402. The network entity 1402 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1402 may include at least one of a CU 1410, a DU 1430, or a RU 1440. For example, depending on the layer functionality handled by the component 199, the network entity 1402 may include a CU 1410; both a CU 1410 and a DU 1430; each of the CU 1410, the DU 1430, and the RU 1440; the DU 1430; both a DU 1430 and a RU 1440; or the RU 1440. The CU 1410 may include a CU processor 1412. The CU processor 1412 may include an on-chip memory 1412'. In some aspects, the CU 1410 may also include an additional memory module 1414 and a communication interface 1418. CU 1410 communicates with DU 1430 via a midhaul link such as an F1 interface. DU 1430 may include a DU processor 1432. DU processor 1432 may include on-chip memory 1432'. In some aspects, DU 1430 may also include an additional memory module 1434 and a communication interface 1438. DU 1430 communicates with RU 1440 via a fronthaul link. RU 1440 may include a RU processor 1442. RU processor 1442 may include on-chip memory 1442'. In some aspects, RU 1440 may also include an additional memory module 1444, one or more transceivers 1446, an antenna 1480, and a communication interface 1448. RU 1440 communicates with UE 104. On-chip memory 1412', 1432', 1442' and additional memory modules 1414, 1434, 1444 may each be considered a computer-readable medium / memory. Each computer readable medium / memory may be non-transitory. Each of processors 1412, 1432, 1442 is responsible for general processing, including executing software stored on the computer readable medium / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0202] As discussed above, component 199 is configured to: send at least one SRS hopping configuration for the UE; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. Component 199 may be within one or more processors of one or more of CU 1410, DU 1430, and RU 1440. Component 199 may be one or more hardware components specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. Network entity 1402 may include a variety of components configured for various functions. In one configuration, the network entity 1402 includes: a component for sending at least one SRS hopping configuration for a UE; a component for obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and a component for obtaining an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. In one configuration, the component for obtaining the SRS hopping pattern is further configured to: select an SRS comb offset pattern to generate a staggered SRS comb pattern for multiple SRS transmission opportunities based on the at least one SRS hopping configuration; and apply the SRS comb offset pattern for multiple SRS transmission opportunities relative to the hopping offsets associated with the one or more subsets of the hopping pattern. In one configuration, the at least one SRS hopping configuration includes a comb tooth spacing number and a number of multiple SRS transmission opportunities, and the SRS comb tooth offset pattern for the multiple SRS transmission opportunities is selected based on the comb tooth spacing number and the number of multiple SRS transmission opportunities. In one configuration, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. In one configuration, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities. In one configuration, the at least one SRS hopping configuration includes a comb tooth spacing number and a number of multiple SRS transmission opportunities, and the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is based on at least one of the comb tooth spacing number or the number of multiple SRS transmission opportunities.In one configuration, the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is equal to the minimum of the number of comb-tooth intervals and the number of multiple SRS transmission opportunities. In one configuration, the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which is not greater than the number of comb-tooth intervals. In one configuration, the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is sent to the UE via an RRC message. In one configuration, a default number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is configured to the UE and the network node. In one configuration, the SRS hopping pattern is based at least in part on the time slot number of multiple SRS transmission opportunities within a radio frame and the symbol number of the first symbol in the subset of continuous SRS transmission opportunities within the time slot. In one configuration, multiple SRS transmission opportunities apply TD-OCC across a subset of continuous SRS transmission opportunities. In one configuration, multiple SRS transmission opportunities apply repetition of SRS across a subset of continuous SRS transmission opportunities. The means may be components 199 of the network entity 1402 configured to perform the functions recited by the means. As described above, the network entity 1402 may include the TX processor 316, the RX processor 370, and the controller / processor 375. Thus, in one configuration, these means may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the means.

[0203] Fig.15 1500 is an example of a hardware implementation for a network entity 1560. In one example, the network entity 1560 may be within the core network 120. The network entity 1560 may include a network processor 1512. The network processor 1512 may include an on-chip memory 1512'. In some aspects, the network entity 1560 may also include an additional memory module 1514. The network entity 1560 communicates with the CU 1502 directly (e.g., backhaul link) or indirectly (e.g., through the RIC) via a network interface 1580. The on-chip memory 1512' and the additional memory module 1514 may each be considered as a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. The processor 1512 is responsible for general processing, including executing software stored on a computer-readable medium / memory. The software, when executed by the corresponding processor, enables the processor to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0204] As discussed above, the SRS hopping configuration component 199 is configured to: send at least one SRS hopping configuration for the UE; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. The SRS hopping configuration component 199 may be within the processor 1512. The SRS hopping configuration component 199 may be one or more hardware components that are specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. The network entity 1560 may include a variety of components configured for various functions. In one configuration, the network entity 1560 includes: a component for sending at least one SRS hopping configuration for a UE; a component for obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and a component for obtaining an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. In one configuration, the component for obtaining the SRS hopping pattern is further configured to: select an SRS comb offset pattern to generate a staggered SRS comb pattern for multiple SRS transmission opportunities based on the at least one SRS hopping configuration; and apply the SRS comb offset pattern for multiple SRS transmission opportunities relative to the hopping offsets associated with the one or more subsets of the hopping pattern. In one configuration, the at least one SRS hopping configuration includes a comb tooth spacing number and a number of multiple SRS transmission opportunities, and the SRS comb tooth offset pattern for the multiple SRS transmission opportunities is selected based on the comb tooth spacing number and the number of multiple SRS transmission opportunities. In one configuration, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities. In one configuration, the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is based at least in part on the symbol number of each SRS transmission opportunity within a subset of consecutive SRS transmission opportunities. In one configuration, the at least one SRS hopping configuration includes a comb tooth spacing number and a number of multiple SRS transmission opportunities, and the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is based on at least one of the comb tooth spacing number or the number of multiple SRS transmission opportunities.In one configuration, the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is equal to the minimum of the number of comb tooth intervals and the number of multiple SRS transmission opportunities. In one configuration, the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is the number of multiple SRS transmission opportunities or a divisor of the number of multiple SRS transmission opportunities, which is not greater than the number of comb tooth intervals. In one configuration, the number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is sent to the UE via an RRC message. In one configuration, a default number of SRS transmission opportunities in a subset of continuous SRS transmission opportunities is configured to the UE and the network node. In one configuration, the SRS hopping pattern is based at least in part on the time slot number of multiple SRS transmission opportunities within a radio frame and the symbol number of the first symbol in the subset of continuous SRS transmission opportunities within the time slot. In one configuration, multiple SRS transmission opportunities apply TD-OCC across a subset of continuous SRS transmission opportunities. In one configuration, multiple SRS transmission opportunities apply repetition of SRS across a subset of continuous SRS transmission opportunities. The means may be an SRS hopping configuration component 199 of the network entity 1560 configured to perform the functions recited by the means.

[0205] According to some aspects of the present disclosure, a UE may be configured to: receive at least one SRS hopping configuration from a network node; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and send an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. The network node may also be configured to: send at least one SRS hopping configuration for the UE; obtain an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and obtain an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern. The SRS hopping pattern may provide randomization while maintaining certain properties of a staggered SRS comb pattern with evenly spaced comb offsets, such that an increased number of REs may be uniformly probed.

[0206] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is merely an illustration of the exemplary method. It should be understood that the specific order or hierarchy of the blocks in the process / flowchart may be rearranged based on design preferences. Further, some blocks may be combined or omitted. The attached method claims provide the elements of the various blocks in a sample order, but are not limited to the specific order or hierarchy provided.

[0207] 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 can be applied to other aspects. Therefore, the claims are not limited to the various aspects described herein, but should be given the full scope consistent with the language claims. Unless otherwise specified, reference to an element in the singular form does not mean "one and only one", but "one or more". Terms such as "if", "when" and "while" do not mean a direct temporal relationship or reaction. That is, these phrases, such as "when ...", do not mean an immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that if the conditions are met, then the action will occur, but no specific or immediate time limit is required for the occurrence of the action. The word "exemplary" is used herein to mean "used as an example, instance or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being preferred or having advantages over other aspects. Unless otherwise specifically stated, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, which may include multiple A, multiple B, or multiple C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination may contain one or more members of A, B, or C. A set should be interpreted as a set of elements, where the number of elements is one or more. Thus, for a set of X, X will include one or more elements. If the first device receives data from the second device or sends data to the second device, data may be directly received / sent between the first device and the second device, or indirectly received / sent between the first device and the second device through a collection of devices. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure that are known or will later be known to a person of ordinary skill in the art are expressly incorporated herein by reference and are covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. Words such as "module", "mechanism", "element", "device" cannot replace the word "component". Therefore, no claim element will be understood as a component plus function unless the element is explicitly stated using the phrase "component for..."

[0208] As used herein, the phrase "based on" should not be interpreted as referring to a closed set of information, one or more conditions, one or more factors, etc. In other words, the phrase "based on A" (where "A" can be information, conditions, factors, etc.) should be interpreted as "based at least on A" unless specifically stated differently.

[0209] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0210] Aspect 1 is a method for performing wireless communication at a UE, comprising: receiving at least one SRS hopping configuration from a network node; obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern comprising one or more subsets of the hopping pattern, and each subset of the hopping pattern comprising a subset of continuous SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and transmitting an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern.

[0211] Aspect 2 is a method according to Aspect 1, wherein obtaining the SRS hopping pattern further includes: based on the at least one SRS hopping configuration, selecting an SRS comb tooth offset pattern to generate an staggered SRS comb tooth pattern for the multiple SRS transmission opportunities; and applying the SRS comb tooth offset pattern for the multiple SRS transmission opportunities relative to the hopping offset associated with one or more subsets of the hopping pattern.

[0212] Aspect 3 is a method according to Aspect 2, wherein the at least one SRS hopping configuration includes the number of comb tooth intervals and the number of the multiple SRS transmission opportunities, and the SRS comb tooth offset pattern for the multiple SRS transmission opportunities is selected based on the number of comb tooth intervals and the number of the multiple SRS transmission opportunities.

[0213] Aspect 4 is a method according to any one of aspects 2 and 3, wherein the hopping offset of the multiple SRS hopping patterns for each SRS transmission opportunity is at least partially based on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities.

[0214] Aspect 5 is a method according to any one of aspects 2 to 4, wherein the hopping offsets of the multiple SRS hopping patterns for each SRS transmission opportunity are based at least in part on the symbol number of each SRS transmission opportunity within the subset of consecutive SRS transmission opportunities.

[0215] Aspect 6 is a method according to any one of Aspects 1 to 3, wherein the at least one SRS hopping configuration includes a comb tooth interval number and the number of the multiple SRS transmission opportunities, and the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is based on at least one of the comb tooth interval number or the number of the multiple SRS transmission opportunities.

[0216] Aspect 7 is a method according to aspect 6, wherein the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is equal to a minimum value of the comb tooth interval number and the number of the plurality of SRS transmission opportunities.

[0217] Aspect 8 is a method according to any one of Aspects 6 and 7, wherein the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is the number of the multiple SRS transmission opportunities or a divisor of the number of the multiple SRS transmission opportunities, and the divisor is not greater than the comb tooth interval number.

[0218] Aspect 9 is a method according to aspect 8, further comprising: receiving the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities from the network node via an RRC message.

[0219] Aspect 10 is a method according to any one of aspects 8 and 9, wherein the UE is configured with a default number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities.

[0220] Aspect 11 is a method according to any one of Aspects 1 to 10, wherein the SRS hopping pattern is at least partially based on the time slot numbers of the multiple SRS transmission opportunities within the radio frame and the symbol number of the first symbol in the subset of consecutive SRS transmission opportunities within the time slot.

[0221] Aspect 12 is a method according to aspect 11, wherein the plurality of SRS transmission opportunities apply TD-OCC across the subset of consecutive SRS transmission opportunities.

[0222] Aspect 13 is a method according to any one of aspects 11 and 12, wherein the plurality of SRS transmission opportunities applies repetition of SRS across the subset of consecutive SRS transmission opportunities.

[0223] Aspect 14 is an apparatus for wireless communication, the apparatus comprising: at least one processor, the at least one processor being coupled to a memory and configured to implement any one of aspects 1 to 13, the apparatus further comprising a transceiver coupled to the at least one processor.

[0224] Aspect 15 is an apparatus for wireless communication, the apparatus comprising means for implementing any one of aspects 1 to 13.

[0225] Aspect 16 is a non-transitory computer readable medium storing computer executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 1 to 13.

[0226] Aspect 17 is a method for performing wireless communication at a UE, comprising: sending at least one SRS hopping configuration for the UE; obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and at least one hopping offset, the SRS hopping pattern including one or more subsets of the hopping pattern, and each subset of the hopping pattern including a subset of continuous SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; and obtaining an SRS set across multiple SRS transmission opportunities based on the SRS hopping pattern.

[0227] Aspect 18 is a method according to Aspect 17, wherein obtaining the SRS hopping pattern further includes: based on the at least one SRS hopping configuration, selecting an SRS comb tooth offset pattern to generate an staggered SRS comb tooth pattern for the multiple SRS transmission opportunities; and applying the SRS comb tooth offset pattern for the multiple SRS transmission opportunities relative to the hopping offset associated with one or more subsets of the hopping pattern.

[0228] Aspect 19 is a method according to Aspect 18, wherein the at least one SRS hopping configuration includes a comb tooth interval number and a number of the multiple SRS transmission opportunities, and the SRS comb tooth offset pattern for the multiple SRS transmission opportunities is selected based on the comb tooth interval number and the number of the multiple SRS transmission opportunities.

[0229] Aspect 20 is a method according to any one of aspects 18 and 19, wherein the hopping offsets of the multiple SRS hopping patterns for each SRS transmission opportunity are based at least in part on the symbol number of each SRS transmission opportunity within the multiple SRS transmission opportunities.

[0230] Aspect 21 is a method according to any one of aspects 18 to 20, wherein the hopping offsets of the multiple SRS hopping patterns for each SRS transmission opportunity are based at least in part on the symbol number of each SRS transmission opportunity within the subset of consecutive SRS transmission opportunities.

[0231] Aspect 22 is a method according to any one of Aspects 17 to 21, wherein the at least one SRS hopping configuration includes a comb tooth interval number and the number of the multiple SRS transmission opportunities, and the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is based on at least one of the comb tooth interval number or the number of the multiple SRS transmission opportunities.

[0232] Aspect 23 is a method according to aspect 22, wherein the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is equal to a minimum value of the comb tooth interval number and the number of the plurality of SRS transmission opportunities.

[0233] Aspect 24 is a method according to any one of Aspects 22 and 23, wherein the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is the number of the multiple SRS transmission opportunities or a divisor of the number of the multiple SRS transmission opportunities, and the divisor is not greater than the comb tooth interval number.

[0234] Aspect 25 is a method according to aspect 24, further comprising: sending the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities to the UE via an RRC message.

[0235] Aspect 26 is a method according to aspects 24 and 25, wherein the UE is configured with a default number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities.

[0236] Aspect 27 is a method according to any one of Aspects 17 to 26, wherein the SRS hopping pattern is at least partially based on the time slot numbers of the multiple SRS transmission opportunities within the radio frame and the symbol number of the first symbol in the subset of consecutive SRS transmission opportunities within the time slot.

[0237] Aspect 28 is a method according to aspect 27, wherein the plurality of SRS transmission opportunities apply TD-OCC across the subset of consecutive SRS transmission opportunities.

[0238] Aspect 29 is a method according to any one of aspects 27 and 28, wherein the plurality of SRS transmission opportunities applies repetition of SRS across the subset of consecutive SRS transmission opportunities.

[0239] Aspect 30 is an apparatus for wireless communication, the apparatus comprising: at least one processor, the at least one processor coupled to a memory and configured to implement any one of aspects 17 to 29, the apparatus further comprising a transceiver coupled to the at least one processor.

[0240] Aspect 31 is an apparatus for wireless communication, the apparatus comprising means for implementing any one of aspects 17 to 29.

[0241] Aspect 32 is a non-transitory computer readable medium storing computer executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 17 to 29.

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: receiving at least one sounding reference signal (SRS) hopping configuration from a network node; obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and the at least one hopping offset, the SRS hopping pattern comprising one or more subsets of hopping patterns, and each subset of the hopping pattern comprising a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; as well as An SRS set is transmitted across a plurality of SRS transmission opportunities based on the SRS hopping pattern.

2. The apparatus of claim 1 , wherein to obtain the SRS hopping pattern, the at least one processor is further configured to: Based on the at least one SRS hopping configuration, selecting an SRS comb offset pattern to generate a staggered SRS comb pattern for the plurality of SRS transmission opportunities; and The SRS comb offset pattern for the plurality of SRS transmission opportunities is applied relative to the hopping offsets associated with one or more subsets of hopping patterns.

3. The apparatus according to claim 2, wherein the at least one SRS hopping configuration comprises a comb tooth interval number and a number of the plurality of SRS transmission opportunities, The SRS comb tooth offset pattern for the plurality of SRS transmission opportunities is selected based on the number of comb tooth intervals and the number of the plurality of SRS transmission opportunities. 4 . The apparatus of claim 2 , wherein the hopping offsets of the plurality of SRS hopping patterns for each SRS transmission opportunity are based at least in part on a symbol number of each SRS transmission opportunity within the plurality of SRS transmission opportunities.

5. The apparatus of claim 2, wherein the hopping offsets of the plurality of SRS hopping patterns for each SRS transmission opportunity are based at least in part on a symbol number of each SRS transmission opportunity within the subset of consecutive SRS transmission opportunities.

6. The apparatus according to claim 1, wherein the at least one SRS hopping configuration includes a comb tooth interval number and a number of the multiple SRS transmission opportunities, and the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is based on at least one of the comb tooth interval number or the number of the multiple SRS transmission opportunities. 7 . The apparatus according to claim 6 , wherein the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is equal to a minimum value of the comb-tooth interval number and the number of the plurality of SRS transmission opportunities.

8. The apparatus according to claim 6, wherein the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is the number of the plurality of SRS transmission opportunities or a divisor of the number of the plurality of SRS transmission opportunities, and the divisor is not greater than the comb tooth interval number.

9. The apparatus of claim 8, wherein the at least one processor is further configured to receive the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities from the network node via a radio resource control (RRC) message.

10. The apparatus of claim 8, wherein the at least one processor is configured with a default number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities.

11. The apparatus of claim 1 , further comprising a transceiver coupled to the at least one processor, Wherein the SRS hopping pattern is based at least in part on slot numbers of the plurality of SRS transmission opportunities within a radio frame and symbol numbers of first symbols of the subset of consecutive SRS transmission opportunities within a slot. 12 . The apparatus of claim 11 , wherein the plurality of SRS transmission opportunities applies a time domain orthogonal cover code (TD-OCC) across the subset of consecutive SRS transmission opportunities. 13 . The apparatus of claim 11 , wherein the plurality of SRS transmission opportunities applies repetition of SRS across the subset of consecutive SRS transmission opportunities.

14. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: transmitting at least one sounding reference signal (SRS) hopping configuration for a user equipment (UE); obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and the at least one hopping offset, the SRS hopping pattern comprising one or more subsets of hopping patterns, and each subset of the hopping pattern comprising a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; as well as An SRS set is obtained across a plurality of SRS transmission opportunities based on the SRS hopping pattern.

15. The apparatus of claim 14, wherein to obtain the SRS hopping pattern, the at least one processor is further configured to: Based on the at least one SRS hopping configuration, selecting an SRS comb offset pattern to generate a staggered SRS comb pattern for the plurality of SRS transmission opportunities; and The SRS comb offset pattern for the plurality of SRS transmission opportunities is applied relative to the hopping offsets associated with one or more subsets of hopping patterns.

16. The apparatus according to claim 15, wherein the at least one SRS hopping configuration comprises a comb tooth interval number and a number of the plurality of SRS transmission opportunities, The SRS comb tooth offset pattern for the plurality of SRS transmission opportunities is selected based on the number of comb tooth intervals and the number of the plurality of SRS transmission opportunities.

17. The apparatus of claim 15, wherein the hopping offsets of the plurality of SRS hopping patterns for each SRS transmission opportunity are based at least in part on a symbol number of each SRS transmission opportunity within the plurality of SRS transmission opportunities.

18. The apparatus of claim 15, wherein the hopping offsets of the plurality of SRS hopping patterns for each SRS transmission opportunity are based at least in part on a symbol number of each SRS transmission opportunity within the subset of consecutive SRS transmission opportunities.

19. The apparatus according to claim 14, wherein the at least one SRS hopping configuration includes a comb tooth interval number and a number of the multiple SRS transmission opportunities, and the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is based on at least one of the comb tooth interval number or the number of the multiple SRS transmission opportunities.

20. The apparatus of claim 19, wherein the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is equal to a minimum value of the comb-tooth interval number and the number of the plurality of SRS transmission opportunities.

21. The apparatus of claim 19, wherein the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities is the number of the plurality of SRS transmission opportunities or a divisor of the number of the plurality of SRS transmission opportunities, the divisor being no greater than the comb tooth interval number.

22. The apparatus of claim 21, wherein the at least one processor is further configured to: send the number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities to the UE via a radio resource control (RRC) message.

23. The apparatus of claim 21, wherein the at least one processor is configured with a default number of SRS transmission opportunities in the subset of consecutive SRS transmission opportunities.

24. The apparatus of claim 14, further comprising a transceiver coupled to the at least one processor, Wherein the SRS hopping pattern is based at least in part on slot numbers of the plurality of SRS transmission opportunities within a radio frame and symbol numbers of first symbols of the subset of consecutive SRS transmission opportunities within a slot.

25. The apparatus of claim 24, wherein the plurality of SRS transmission opportunities applies a time domain orthogonal cover code (TD-OCC) across the subset of consecutive SRS transmission opportunities.

26. The apparatus of claim 24, wherein the plurality of SRS transmission opportunities applies repetition of SRS across the subset of consecutive SRS transmission opportunities.

27. A method of wireless communication at a user equipment (UE), the method comprising: receiving at least one sounding reference signal (SRS) hopping configuration from a network node; obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and the at least one hopping offset, the SRS hopping pattern comprising one or more subsets of hopping patterns, and each subset of the hopping pattern comprising a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; as well as An SRS set is transmitted across a plurality of SRS transmission opportunities based on the SRS hopping pattern.

28. The method according to claim 27, wherein obtaining the SRS hopping pattern comprises: selecting an SRS comb offset pattern to generate a staggered SRS comb pattern for the plurality of SRS transmission opportunities based on the at least one SRS hopping configuration; as well as The SRS comb offset pattern for the plurality of SRS transmission opportunities is applied relative to the hopping offsets associated with one or more subsets of hopping patterns.

29. A method for wireless communication at a network node, the method comprising: transmitting at least one sounding reference signal (SRS) hopping configuration for a user equipment (UE); obtaining an SRS hopping pattern based on the at least one SRS hopping configuration and the at least one hopping offset, the SRS hopping pattern comprising one or more subsets of hopping patterns, and each subset of the hopping pattern comprising a subset of consecutive SRS transmission opportunities associated with a hopping offset in the at least one hopping offset; as well as An SRS set is obtained across a plurality of SRS transmission opportunities based on the SRS hopping pattern.

30. The method according to claim 29, wherein obtaining the SRS hopping pattern further comprises: selecting an SRS comb offset pattern to generate a staggered SRS comb pattern for the plurality of SRS transmission opportunities based on the at least one SRS hopping configuration; as well as The SRS comb offset pattern for the plurality of SRS transmission opportunities is applied relative to the hopping offsets associated with one or more subsets of hopping patterns.

Images