Sounding reference signal repetition configuration

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive configuration information that configures a reference signal (RS) transmission with a repetition factor, where the configuration information indicates one or more parameters for the RS transmission, the one or more parameters include at least one of a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols. The UE may perform the RS transmission using the repetition factor according to a configuration. Numerous other aspects are described.

Description

[0001] This application is a divisional application of the patent application with an international filing date of December 24, 2020, international application number PCT / CN2020 / 138854, Chinese national filing date of December 24, 2020, application number 202080107957.X, and invention title "Repeated Configuration of Probing Reference Signal". open field

[0002] Various aspects of this disclosure generally relate to wireless communications, and more particularly to techniques and apparatus for reconfiguring a probe reference signal (SRS). background

[0003] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is an enhancement set of the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0004] A wireless network may include several base stations (BSs) capable of supporting communication between several user equipments (UEs). UEs can communicate with the BS via downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, while the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, the BS may be referred to as a B-node, gNB, access point (AP), radio headend, transmit / receive point (TRP), new radio (NR) BS, 5G B-node, etc.

[0005] The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different user equipment to communicate at the city, country, region, and even global levels. NR (which can also be referred to as 5G) is an enhancement set of the LTE mobile standard issued by 3GPP. NR is designed to better support mobile broadband Internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) (CP-OFDM) on the downlink (DL), and using CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation to improve spectral efficiency, reduce costs, improve service, utilize new spectrum, and better integrate with other open standards. Further improvements to LTE, NR, and other radio access technologies remain useful as the demand for mobile broadband access continues to grow. Overview

[0006] In some aspects, a wireless communication method performed by a user equipment (UE) includes: receiving configuration information configuring a reference signal (RS) transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and performing the RS transmission using the repetition factor according to the configuration.

[0007] In some aspects, a wireless communication method performed by a base station includes: transmitting configuration information configuring an RS transmission having a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and receiving the RS transmission using the repetition factor according to the configuration.

[0008] In some aspects, a UE for wireless communication includes a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: receive configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and perform the RS transmission using the repetition factor according to the configuration.

[0009] In some aspects, a base station for wireless communication includes a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: transmit configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and receive the RS transmission using the repetition factor according to the configuration.

[0010] In some aspects, a non-transient computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receive configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and perform the RS transmission using the repetition factor according to the configuration.

[0011] In some aspects, a non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions, which, when executed by one or more processors of a base station, cause the base station to: transmit configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and receive the RS transmission using the repetition factor according to the configuration.

[0012] In some aspects, an apparatus for wireless communication includes: means for receiving configuration information configuring an RS transmission having a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and means for performing the RS transmission using the repetition factor according to the configuration.

[0013] In some aspects, an apparatus for wireless communication includes: means for transmitting configuration information configuring an RS transmission having a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and means for receiving the RS transmission using the repetition factor according to the configuration.

[0014] The aspects generally include, as substantially described herein with reference to the accompanying drawings and explained as illustrated in the drawings, methods, apparatus, systems, computer program products, non-transient computer-readable media, user equipment, base stations, wireless communication devices and / or processing systems.

[0015] The foregoing has broadly outlined the features and technical advantages of the examples according to this disclosure in an effort to facilitate a better understanding of the following detailed description. Additional features and advantages will be described thereafter. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for implementing the same purposes as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in both their organization and manner of operation, and their associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each drawing is provided for illustrative and descriptive purposes and not for defining limitations on the claims. Brief description of the attached diagram

[0016] To gain a more detailed understanding of the features described above in this disclosure, reference can be made to various aspects of the above brief overview, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and should not be considered as limiting its scope, as other equivalent aspects are permissible in this description. Identical reference numerals in different drawings may identify the same or similar elements.

[0017] Figure 1 This is a diagram illustrating examples of wireless networks according to various aspects of this disclosure.

[0018] Figure 2 This is a diagram illustrating an example of communication between a base station and a UE in a wireless network according to various aspects of this disclosure.

[0019] Figure 3 This is a diagram illustrating an example of a probe reference signal (SRS) resource set according to various aspects of this disclosure.

[0020] Figure 4 This is a diagram illustrating an example of a repetition scheme for SRS according to various aspects of this disclosure.

[0021] Figure 5 This is a diagram illustrating examples of signaling associated with SRS reconfiguration according to various aspects of this disclosure.

[0022] Figure 6 This is a diagram illustrating an example of a sequence of SRS symbol sets that is at least partially based on a sequence transition configuration according to various aspects of this disclosure.

[0023] Figure 7 This is a diagram illustrating an example of SRS transmission using a cyclic shift offset configuration according to various aspects of this disclosure.

[0024] Figure 8 This is a diagram illustrating an example of SRS transmission using a partial frequency probe SRS with a cyclic shift offset configuration, according to various aspects of this disclosure.

[0025] Figure 9 This is a diagram illustrating an example of SRS transmission using a frequency hopping configuration according to various aspects of this disclosure.

[0026] Figure 10 This is a diagram illustrating, for example, an example process performed by a UE according to various aspects of this disclosure.

[0027] Figure 11 This is a diagram illustrating, for example, an example process performed by a base station according to various aspects of this disclosure.

[0028] Figure 12 This is a block diagram of an example device for wireless communication according to various aspects of this disclosure.

[0029] Figure 13 This is a block diagram of an example device for wireless communication according to various aspects of this disclosure. Detailed description

[0030] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be implemented in many different forms and should not be construed as being limited to any specific structure or function given throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or method of practice. Furthermore, the scope of this disclosure is intended to cover such apparatus or methods practiced using additional structures, functionalities, or structures and functionalities that complement or supplement the various aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be implemented by one or more elements of the claims.

[0031] Several aspects of a telecommunications system will now be described with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and explained in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements can be implemented using hardware, software, or a 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.

[0032] It should be noted that although the aspects herein may be described using terms commonly associated with 5G or NR radio access technology (RAT), the aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or RATs after 5G (e.g., 6G).

[0033] Figure 1 This is a diagram illustrating an example of a wireless network 100 according to various aspects of this disclosure. The wireless network 100 may be a 5G (NR) network and / or an LTE network, etc., or may include elements thereof. The wireless network 100 may include several base stations 110 (shown as BS110a, BS110b, BS110c, and BS110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NRBS, B-node, gNB, 5G B-node (NB), access point, transmit / receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0034] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. Macrocells can cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with a service subscription. Picocells can cover a relatively small geographic area and allow unrestricted access by UEs with a service subscription. Femtocells can cover a relatively small geographic area (e.g., a residential area) and allow restricted access by UEs associated with that femtocell (e.g., UEs in a Closed Subscriber Group (CSG)). A BS used for macrocells may be referred to as a macro BS. A BS used for picocells may be referred to as a pico BS. A BS used for femtocells may be referred to as a femto BS or a home BS. Figure 1 In the example shown, BS110a can be a macro BS for macro cell 102a, BS110b can be a pico BS for pico cell 102b, and BS110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “B node,” “5G NB,” and “cell” are used interchangeably herein.

[0035] In some respects, the cell may not be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile BS. In some respects, BSs may interconnect with each other and / or interconnect to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (such as direct physical connections or virtual networks, using any suitable transport network).

[0036] The wireless network 100 may also include a relay station. A relay station is an entity capable of receiving data transmissions from an upstream station (e.g., a BS or a UE) and transmitting those data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE capable of relaying transmissions for other UEs. Figure 1 In the example shown, relay BS110d can communicate with macro BS110a and UE 120d to facilitate communication between BS110a and UE 120d. A relay BS can also be referred to as a relay station, relay base station, relay, etc.

[0037] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs may have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0038] Network controller 130 can be coupled to a set of Base Stations (BSs) and can provide coordination and control over these BSs. Network controller 130 can communicate with each BS via backhaul. These BSs can also communicate with each other directly or indirectly via wireless or wired backhaul.

[0039] UE 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE may be a cellular phone (e.g., a smartphone), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet, camera, gaming device, netbook, smartbook, ultrabook, medical device or equipment, biometric sensor / device, wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), entertainment device (e.g., music or video device, or satellite radio), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0040] Some UEs may be considered machine-type communication (MTC) devices or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, instruments, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. Wireless nodes may provide connectivity to or to a network (e.g., a wide area network, such as the Internet or a cellular network) via wired or wireless communication links, for example. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included within a housing that houses components of UE 120, such as processor components and / or memory components. In some aspects, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

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

[0042] In some respects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In this scenario, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as performed by base station 110.

[0043] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating band with a first frequency range (FR1) and / or an operating band with a second frequency range (FR2), where the first frequency range (FR1) spans from 410 MHz to 7.125 GHz and the second frequency range (FR2) spans from 24.25 GHz to 52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequency bands. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the "sub-6 GHz band." Similarly, although different from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is often referred to as the "millimeter wave" band. Therefore, unless otherwise stated, it should be understood that, if used herein, the terms "sub-6 GHz" and the like can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or intermediate frequency band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise stated, it should be understood that, if used herein, the terms "millimeter wave" and the like can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequency band frequencies (e.g., less than 24.25 GHz). It is conceivable that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0044] As indicated above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 The example described.

[0045] Figure 2 This is a diagram illustrating an example 200 of communication between a base station 110 and a UE 120 in a wireless network 100 according to various aspects of this disclosure. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, wherein generally T≥1 and R≥1.

[0046] At base station 110, transmit processor 220 can receive data destined for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQI) received from each UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper-layer signaling), and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and can provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 can process its respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted via T antennas 234a to 234t, respectively.

[0047] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM) to obtain received symbols. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on these received symbols where applicable, and provide detected symbols. Receiver processor 258 can process (e.g., demodulate and decode) these detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine parameters such as Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Signal Received Quality (RSRQ), and / or Channel Quality Indicator (CQI). In some respects, one or more components of the UE 120 may be included in the housing 284.

[0048] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in a core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0049] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include, or be included therein, one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or multiple antenna elements within housings. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include elements coupled to one or more transmitting and / or receiving components (such as...). Figure 2 One or more antenna elements (one or more components).

[0050] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., reports including RSRP, RSSI, RSRQ, and / or CQI). Transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from transmit processor 264 may be pre-encoded by TX MIMO processor 266 where applicable, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some aspects, modulators and demodulators (e.g., MOD / DEMOD 254) of UE 120 may be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receiver processors 258, transmitter processors 264, and / or TX MIMO processors 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein, for example, as referenced. Figure 3-11 As described.

[0051] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 where applicable, and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and / or demodulators 232, MIMO detectors 236, receiver processors 238, transmitter processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein, for example, as referenced. Figure 3-11 As described.

[0052] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component may perform one or more techniques associated with SRS reconfiguration, as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component may execute or direct, for example Figure 10 Process 1000 Figure 11 The operation of process 1100 and / or other processes as described herein. Memory 242 and 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include: a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly executed, or executed after compilation, transformation, and / or interpretation), the one or more processors, UE 120, and / or base station 110 may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 10 Process 1000 Figure 11 The operation of process 1100, and / or other processes described herein. In some aspects, the execution instructions may include run instructions, translate instructions, compile instructions, and / or interpret instructions, etc.

[0053] In some aspects, UE 120 includes: means for receiving configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and / or means for using the repetition factor according to the configuration to perform the RS transmission. Means for UE 120 to perform the operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, or memory 282.

[0054] In some respects, UE 120 includes means for determining a list of cyclic shift offsets based at least in part on an initial cyclic shift offset and a predefined sequence.

[0055] In some aspects, BS110 includes: means for transmitting configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and / or means for receiving the RS transmission using the repetition factor according to the configuration. Means for BS 110 to perform the operations described herein may include, for example, one or more of a transmit processor 220, a TX MIMO processor 230, a modulator 232, an antenna 234, a demodulator 232, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0056] although Figure 2 The boxes in the diagram are interpreted as different components, but the functions described above with respect to these boxes can be implemented using a single hardware component, software component, or combination of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by controller / processor 280 or under the control of controller / processor 280.

[0057] As indicated above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0058] Figure 3 This is a diagram illustrating example 300 of an SRS resource set according to various aspects of this disclosure.

[0059] Base station 110 can configure UE 120 to have one or more SRS resource sets to allocate resources for UE 120 to perform SRS transmissions. For example, the configuration of SRS resource sets can be indicated in radio resource control (RRC) messages (e.g., RRC configuration messages, RRC reconfiguration messages, etc.). As shown by reference numeral 305, an SRS resource set may include one or more resources (e.g., shown as SRS resources), which may include time resources and / or frequency resources (e.g., time slots, symbols, resource blocks, periodicity of time resources, etc.).

[0060] As indicated by reference numeral 310, an SRS resource may include one or more antenna ports on which SRS is to be transmitted (e.g., in time-frequency resources). Thus, the configuration of an SRS resource set may indicate one or more time-frequency resources on which SRS is to be transmitted, and may indicate one or more antenna ports on which SRS is to be transmitted. In some aspects, the configuration of an SRS resource set may indicate the use cases for that SRS resource set (e.g., in the SRS-SetUse information element). For example, an SRS resource set may have use cases such as antenna switching, codebook, non-codebook, beam management, etc.

[0061] Antenna switching SRS resource sets can be used to indicate downlink CSI with reciprocity between uplink and downlink channels. For example, when there is reciprocity between uplink and downlink channels, base station 110 can use antenna switching SRS (e.g., using SRS delivered from resources in the antenna switching SRS resource set) to obtain downlink CSI (e.g., to determine the downlink precoder to be used for communication with UE 120).

[0062] When base station 110 indicates an uplink precoder to UE 120, the codebook SRS resource set can be used to indicate the uplink CSI. For example, when base station 110 is configured to indicate an uplink precoder to UE 120 (e.g., using a precoder codebook), base station 110 can use the codebook SRS (e.g., using SRS delivered via resources in the codebook SRS resource set) to obtain the uplink CSI (e.g., to determine the uplink precoder to be indicated to UE 120 and used by UE 120 to communicate with base station 110). In some aspects, at least for the codebook SRS, virtual ports with maximum transmit power (e.g., a combination of two or more antenna ports) can be supported.

[0063] When UE 120 selects an uplink precoder (e.g., instead of base station 110 indicating the uplink precoder to be used by UE 120), a non-codebook SRS resource set can be used to indicate the uplink CSI. For example, when UE 120 is configured to select an uplink precoder, base station 110 can use a non-codebook SRS (e.g., an SRS delivered using resources in the non-codebook SRS resource set) to obtain the uplink CSI. In this case, the non-codebook SRS can be precoded using the precoder selected by UE 120 (e.g., the precoder can be indicated to base station 110).

[0064] Beam management SRS resource sets can be used to indicate CSI for millimeter-wave communications.

[0065] SRS resources can be configured as periodic, semi-persistent (sometimes referred to as semi-persistent scheduling (SPS)), or aperiodic. Periodic SRS resources can be configured via configuration messages indicating the periodicity of the SRS resource (e.g., slot-level periodicity, where the SRS resource occurs every Y slots) and slot offset. In some cases, periodic SRS resources may always be active and may not be dynamically activated or deactivated. Semi-persistent SRS resources can also be configured via configuration messages indicating the periodicity and slot offset used for the semi-persistent SRS resource and can be dynamically activated and deactivated (e.g., using DCI or Media Access Control (MAC) Control Element (CE) (MAC-CE)). Aperiodic SRS resources can be dynamically triggered, such as via DCI (e.g., UE-specific DCI or group-shared DCI) or MAC-CE.

[0066] In some aspects, UE 120 may be configured with a mapping between SRS ports (e.g., antenna ports) and corresponding SRS resources. UE 120 may use the SRS ports indicated in the configuration to transmit SRS on a specific SRS resource. In some aspects, the SRS resource may span N adjacent symbols within a time slot (e.g., where N equals 1, 2, or 4). UE 120 may be configured with X SRS ports (e.g., where X ≤ 4). In some aspects, each of the X SRS ports may be mapped to a corresponding symbol of the SRS resource and used to transmit SRS in that symbol.

[0067] like Figure 3 As shown, in some aspects, different SRS resource sets (e.g., with different use cases) indicated to UE 120 may overlap (e.g., overlap in time, frequency, etc., such as in the same time slot). For example, as indicated by reference numeral 315, a first SRS resource set (e.g., shown as SRS resource set 1) is shown to have an antenna switching use case. As shown, this example antenna switching SRS resource set includes a first SRS resource (shown as SRS resource A) and a second SRS resource (shown as SRS resource B). Thus, the antenna switching SRS can be transmitted in SRS resource A (e.g., a first time-frequency resource) using antenna ports 0 and 1, and can be transmitted in SRS resource B (e.g., a second time-frequency resource) using antenna ports 2 and 3.

[0068] As indicated by reference numeral 320, the second SRS resource set (e.g., shown as SRS resource set 2) can be a codebook use case. As shown, this example codebook SRS resource set only includes the first SRS resource (shown as SRS resource A). Thus, the codebook SRS can be transmitted in SRS resource A (e.g., the first time-frequency resource) using antenna ports 0 and 1. In this case, UE 120 may not use antenna ports 2 and 3 to transmit the codebook SRS in SRS resource B (e.g., the second time-frequency resource).

[0069] As indicated above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0070] Figure 4 This is a diagram illustrating example 400 of a repetition scheme for SRS according to various aspects of this disclosure. Example 400 shows a 4-symbol SRS. The SRS can be configured to occupy several symbols (e.g., Orthogonal Frequency Division Multiplexing (OFDM) symbols), such as 1 symbol, 2 symbols, 4 symbols, etc. The symbols to which the SRS is mapped are referred to herein as RS symbols or SRS symbols, and these terms are used interchangeably. Example 400 shows an example where the time slot includes 14 OFDM symbols and 16 frequency domain subdivisions (wherein the frequency domain subdivisions are shown in the vertical direction). The frequency domain subdivisions can be subcarriers, subcarrier groups, etc.

[0071] SRS can be configured with a repetition factor. The repetition factor identifies the number of times the SRS is repeated in a given subcarrier set. Reference numeral 405 illustrates an SRS with a repetition factor of 1. As shown, the SRS is transmitted in a first subcarrier set for one symbol, followed by a second subcarrier set for one symbol, then a third subcarrier set for one symbol, and finally a fourth subcarrier set for one symbol. Reference numeral 410 illustrates an SRS with a repetition factor of 2. As shown, the SRS is transmitted in a first subcarrier set for two symbols, followed by a second subcarrier set for two symbols. Reference numeral 415 illustrates an SRS with a repetition factor of 4. As shown, the SRS is transmitted in a first subcarrier set for four symbols. Using a larger repetition factor improves coverage for certain UEs (such as cell edge UEs). Using a smaller repetition factor increases the bandwidth that a single UE can probe.

[0072] SRS is a reference signal that can be generated from a sequence. This sequence can be a numerical sequence, such as the Zadoff Chu (ZC) sequence, but other sequences can also be used. Base stations can configure different UEs to use different cyclic shifts (sometimes abbreviated as CS) for the sequence to increase the number of UEs that can use a given sequence. The cyclic shift identifies the starting position in the sequence. For example, the sequence [1 2 3 4] can be cyclically shifted to generate sequences [1 2 3 4], [2 3 4 1], [3 4 1 2], and [4 1 2 3], thereby increasing the number of UEs that can orthogonally transmit RS from one to four. The cyclic shift can be viewed as a phase offset of the modulation constellation used to transmit the SRS. The cyclic shift α to be used by a given UE... i Can be offset by cyclic shift To identify. In the example above, the cyclically shifted sequence can be generated using cyclic shift offsets of 0, 1, 2, and 3, respectively.

[0073] Implementations of SRS signaling with repetition-based coverage enhancement improve coverage for cell-edge UEs, lower-capability UEs, and more. However, many aspects of SRS configuration do not account for the repetition factor, which constrains the flexibility and versatility of SRS signaling. For example, in some deployments, the sequence of each RS symbol in the SRS is constrained to be the same for all RS symbols or different for all RS symbols. As another example, in some deployments, the cyclic shift offset may be constrained to be the same for all RS symbols in the SRS. As yet another example, the SRS may be constrained to use the same set of subcarriers for each RS symbol within a repetition group. These constraints reduce the achievable versatility in wireless communication systems, which reduces the number of UEs that can be configured to perform SRS signaling in a given system, and reduces the accuracy and versatility of SRS signaling configuration.

[0074] Some of the techniques and apparatuses described herein enhance the configuration of repetition-based SRS transmissions (e.g., SRS transmissions using repetition factors). For example, some of the techniques and apparatuses described herein provide different sequences to be configured for different RS symbols in SRS transmissions. As another example, the techniques and apparatuses described herein provide different cyclic shift offsets for different RS symbols in SRS transmissions. As yet another example, the techniques and apparatuses described herein provide different sets of subcarriers for RS symbols in repetition groups. In this way, the flexibility and versatility of SRS configuration are improved, which increases the number of UEs that can be configured to perform SRS signaling in a given system (thus improving multi-user SRS signaling) and improves the efficiency of channel estimation, at least in part, based on SRS signaling.

[0075] As indicated above, Figure 4 This is provided as an example. Other examples may differ from the one provided. Figure 4 The example described.

[0076] Figure 5 This is a diagram illustrating example 500 of signaling associated with SRS reconfiguration according to various aspects of this disclosure. As shown, example 500 includes UE 120 and BS 110.

[0077] As indicated by reference numeral 505, BS110 may provide configuration information to UE 120. For example, BS110 may provide configuration information via control signaling, such as Radio Resource Control (RRC) signaling. As indicated by reference numeral 510, the configuration information may include information configuring SRS transmissions. For example, the configuration information may include a set of information elements (IEs) (e.g., SRS resource IEs, etc.) that configure UE 120 to perform SRS transmissions. In some aspects, the configuration information may include information indicating the repetition type. As used herein, the repetition type is a pattern indicating the configuration of SRS associated with a repetition factor. For example, the repetition type may explicitly or implicitly indicate one or more parameters used for SRS transmissions, such as one or more parameters shown by reference numerals 515, 520, 525, and 530.

[0078] As indicated by reference numeral 515, in some aspects, the configuration information may indicate a repetition factor. For example, the configuration information may include parameters indicating a repetition factor. As another example, the repetition type of the configuration information may indicate a repetition factor. The repetition factor may indicate the number of repetitions used for SRS transmission, as described elsewhere herein. In some aspects, the configuration information may include one or more other parameters regarding the SRS resource, such as information indicating the start position of the SRS transmission, information indicating the number of symbols used for the SRS transmission, and so on.

[0079] As indicated by reference numeral 520, in some aspects, the configuration information may indicate a sequence hopping configuration. For example, the configuration information may include parameters indicating the sequence hopping configuration. In some aspects, the sequence hopping configuration may indicate a set of sequences to be used for one or more RS symbols. In some aspects, the sequence hopping configuration may indicate the sequence order to be used for one or more RS symbols. In some aspects, the sequence hopping configuration may indicate rules for determining the sequences to be used for RS symbols based at least in part on RS symbol indices. In some aspects, the sequence hopping configuration may indicate rules for determining the sequences to be used for an RS symbol based at least in part on a set of subcarriers associated with that RS symbol.

[0080] Figure 6Examples 600 and 605 illustrate sequences for RS symbol sets that are at least partially based on sequence hopping configurations according to various aspects of this disclosure. Examples 600 and 605 show RS resources according to sequence hopping configurations (such as the sequence frequency hopping configuration indicated by reference numeral 520). In example 600, the sequence hopping configuration indicates that the same sequence is to be used for RS symbols in the same subcarrier set, and different sequences can be used for RS symbols in different subcarrier sets. Thus, sequence 1 is used for the earlier RS ​​symbol set in the first subcarrier set, and sequence 2 is used for the later RS ​​symbol set in the second subcarrier set. In this case, the earlier and later RS ​​symbol sets can be associated with a single SRS transmission having a repetition factor of 2.

[0081] In Example 605, the sequence hopping configuration indicates that different sequences can be used for RS symbols in the same subcarrier set, and the same sequence can be used for RS symbols in different subcarrier sets. Therefore, sequence 1 is used for the first RS symbol in the first subcarrier set, and sequence 2 is used for the second RS symbol in the first subcarrier set. In this case, the first subcarrier set (and the first and second RS symbols) can be associated with a single SRS transmission having a repetition factor of 2. Furthermore, sequence 1 is used for the third RS symbol in the second subcarrier set, and sequence 2 is used for the fourth RS symbol in the second subcarrier set, wherein the third and fourth RS symbols are associated with the single SRS transmission having a repetition factor of 2.

[0082] In some respects, different sequences can include sequences of different types (e.g., one sequence can be a ZC sequence, while another can be a Gold sequence). In other respects, different sequences can include sequences of the same type with different root values, so as to generate different sequences of the same type. Thus, two or more different sequences can be used for two or more RS symbols in SRS transmission, which improves the diversity and efficiency of SRS signaling.

[0083] return Figure 5As indicated by reference numeral 525, in some aspects, the configuration information may indicate a cyclic shift offset configuration. For example, the configuration information may include parameters indicating a cyclic shift offset configuration. In some aspects, the cyclic shift offset configuration may indicate how to determine the cyclic offset for one or more RS symbols transmitted in the SRS. In some aspects, the cyclic shift offset configuration may indicate a list of cyclic shift offsets (e.g., via RRC signaling, etc.), and the UE 120 may apply the cyclic shift offsets identified by the list to the RS symbols transmitted in the SRS. In this case, if there are more RS symbols than the cyclic shift offsets in the list, the UE 120 may repeat the list when assigning cyclic shift offsets (e.g., wrapping back to the beginning of the list). In some aspects, the cyclic shift offset configuration may indicate a repetition factor, and may indicate a list of cyclic shift offsets that vary due to the repetition factor. For example, for a repetition factor of 2, the parameter cyclicShiftList-n2 can indicate the SEQUENCE(SIZE(1.maxNrCSList-1))(sequence(size(1.maxNrCSList-1))) for INTEGER(0..7)(integer(0..7)), and for a repetition factor of 4, the parameter cycliChiftList-n4 can indicate the SEQUENCE(SIZE(1.maxNRCSlist-1))(sequence(size(1.maxNRCSlist-1))) for INTEGER(0..11)(integer(0..11)).

[0084] In some respects, UE 120 can determine the cyclic shift offset configuration. For example, UE 120 can receive information indicating rules for determining the cyclic shift offset (and therefore the cyclic shift) for the RS symbol group. As used herein, the RS symbol group is a set of RS symbols associated with a given repetition factor, such as those derived from... Figure 6 The group is indicated by reference numeral 610 in the accompanying drawings. In some aspects, the rule may indicate a predefined sequence of CS offsets, and the UE 120 may determine the cyclic shift offset for one or more RS symbol groups based on this predefined sequence (e.g., a first CS offset in the predefined sequence is used for a first RS symbol group, a second CS offset in the predefined sequence is used for a second RS symbol group, and so on). In some aspects, the rule may indicate a first CS offset (e.g., X) and an offset (e.g., K) for subsequent CS offsets, and the UE 120 may use the first CS offset and this offset to determine the CS offset for the RS symbol group (e.g., X for the first RS symbol group, X+K for the second RS symbol group, X+2K for the third RS symbol group, and so on).

[0085] In some aspects, the cyclic shift offset configuration may be associated with a maximum number of cyclic shift offsets. For example, the cyclic shift offset configuration may indicate a list including up to a maximum number of cyclic shift offsets. In some aspects, the maximum number of cyclic shift offsets may be based at least in part on whether group-based cyclic shifting is applied. For example, the cyclic shift offset configuration may be associated with a first maximum number of cyclic shift offsets for a first repetition factor (where group-based cyclic shifting is not applied) and a second maximum number of cyclic shift offsets for a second repetition factor (where group-based cyclic shifting is applied). As another example, the cyclic shift offset configuration may indicate a modified maximum number of cyclic shifts (e.g., where the maximum number is modified relative to a baseline maximum number) based at least in part on configuration information. Thus, the cyclic shift offset configuration ensures that sufficient cyclic shift offsets are available for SRS transmission.

[0086] Figure 7 These are illustrations of examples 700, 705, and 710 illustrating SRS transmissions using cyclic shift offset configurations according to various aspects of this disclosure. In example 700, the cyclic shift offset configuration indicates that different cyclic shift offsets will be used for each RS symbol in the RS transmission. For example, the cyclic shift offset configuration may indicate multiple cyclic shift offsets corresponding to multiple RS symbols in the RS transmission.

[0087] In Example 705, the cyclic shift offset configuration indicates that different cyclic shift offsets can be used for RS symbols in the same subcarrier set, and the same cyclic shift offset can be used for RS symbols with the same index in repetition groups in different subcarrier sets. Therefore, CS offset 1 is used for the first RS symbol in the first subcarrier set, and CS offset 2 is used for the second RS symbol in the first subcarrier set. Furthermore, CS offset 1 is used for the third RS symbol in the second subcarrier set, and CS offset 2 is used for the fourth RS symbol in the second subcarrier set, wherein the first and third RS symbols have index 0 in their respective repetition groups, and the third and fourth RS symbols have index 1 in their respective repetition groups.

[0088] In Example 710, the cyclic shift offset configuration indicates that the same cyclic shift offset can be used for RS symbols in the same subcarrier set, and different cyclic shift offsets can be used for RS symbols in different subcarrier sets. Therefore, CS offset 1 is used for the first and second RS symbols in the first subcarrier set, and CS offset 2 is used for the third and fourth RS symbols in the second subcarrier set.

[0089] Figure 8These are illustrations of examples 800 and 805 illustrating SRS transmissions using a cyclic shift offset configuration with a partially frequency-probing SRS according to various aspects of this disclosure. The SRS can be configured to perform full frequency probing (e.g., where the RS resources of the SRS are adjacent in the frequency domain such that each frequency transition of the SRS is frequency-adjacent to the previous frequency transition) or partial frequency probing (e.g., where the RS resources of the SRS are spaced apart in the frequency domain such that each frequency transition of the SRS is frequency-separated from the previous frequency transition). Furthermore, the partial frequency probing configuration can be associated with a mode that indicates the frequency resources used for partial frequency probing. For example, example 805 illustrates an example with a first mode and a second mode that are frequency-separated from each other.

[0090] In Example 800, the cyclic shift offset configuration indicates that a different set of cyclic shift offsets than the partial frequency probe SRS transmission is to be used for the full frequency probe SRS transmission. For example, in Example 800, the first set of CS offsets (here, CS offsets 1 and 2, but the first set can include any number of CS offsets) is used for full frequency probe, while the second set of CS offsets (here, CS offsets 3 and 4, but the second set can include any number of CS offsets) is used for partial frequency probe.

[0091] In Example 805, the cyclic shift offset configuration indicates that a different set of cyclic shift offsets than the second part of the frequency probe SRS transmission is to be used for the first part of the frequency probe SRS transmission. For example, in Example 805, a first set of CS offsets (here, CS offsets 1 and 2, but the first set can include any number of CS offsets) is used for the first part of the frequency probe SRS transmission, while a second set of CS offsets (here, CS offsets 3 and 4, but the second set can include any number of CS offsets) is used for the second part of the frequency probe SRS transmission.

[0092] In some aspects, the cyclic shift offset configuration may be based at least in part on a function relating to the time slots associated with SRS transmission. For example, the cyclic shift offset configuration may indicate that the cyclic shift offset is different for different time slots. In some aspects, the cyclic shift offset configuration may identify a set of cyclic shift offsets corresponding to a given time slot. For example, a first time slot may be configured with a first cyclic shift offset, a second time slot may be configured with a second cyclic shift offset, and so on. In some aspects, the cyclic shift offset configuration may be a function of a time slot number (such as a time slot number within a subframe). For example, the CS offset may be given by the time slot number, or it may be given by a modulus (time slot number, X), where X may be configured, pre-configured, determined, dynamically signaled to the UE 120, etc., by the UE 120. In some aspects, the cyclic shift offset configuration may be dynamically signaled to the UE 120. For example, the BS 110 may transmit information indicating the cyclic shift offset to be used for that time slot (e.g., via dynamic signaling, such as downlink control information or media access control signaling).

[0093] return Figure 5 As indicated by reference numeral 530 in the accompanying drawings, in some aspects, the configuration information may indicate a frequency hopping configuration. For example, the configuration information may include parameters indicating a frequency hopping configuration. A frequency hopping configuration may indicate subcarrier hopping across adjacent RS symbols. For example, a frequency hopping configuration may indicate that RS transmissions are to be performed on a first subcarrier set for a first RS symbol, a second subcarrier set for a second RS symbol, and so on. As another example, a frequency hopping configuration may indicate that the first RS symbol of a repeating group is to be transmitted on a first subcarrier set and the second RS symbol of the repeating group is to be transmitted on a second subcarrier set.

[0094] Figure 9 This is a diagram illustrating Example 900 of SRS transmission using a frequency hopping configuration according to various aspects of this disclosure. In Example 900, the frequency hopping configuration indicates that different subcarriers can be used for adjacent SRS symbols. Furthermore, the frequency hopping configuration indicates that symbols with the same index of a repeating group can be transmitted using the same set of subcarriers. For example, an RS symbol indicated by reference numeral 905 can be associated with a first index of its corresponding repeating group, and an RS symbol indicated by reference numeral 910 can be associated with a second index of its corresponding repeating group. Therefore, the RS symbol indicated by reference numeral 905 is transmitted on the first subcarrier set, and the RS symbol indicated by reference numeral 910 is transmitted on the second subcarrier set.

[0095] return Figure 5As shown by reference numeral 535 in the accompanying drawing, UE 120 can configure SRS transmissions. For example, UE 120 can identify RS resources used for transmitting SRS transmissions. In some aspects, UE 120 can determine one or more parameters, such as repetition factor, sequence hopping configuration, cyclic shift offset configuration, frequency hopping configuration, etc., at least in part based on configuration information. In some aspects, UE 120 can determine the one or more parameters at least in part based on a mode (such as a mode indicated by the repetition type in the configuration information). For example, different modes can be defined at least in part based on at least one of the following: sequence hopping configuration, cyclic shift offset configuration, frequency hopping configuration, or one or more combinations thereof. UE 120 can determine the one or more parameters at least in part based on the selected mode among the different modes.

[0096] As shown by reference numeral 540, UE 120 can transmit SRS transmissions. For example, UE 120 can perform SRS transmissions on RS resources identified according to configuration information. As shown by reference numeral 545, BS 110 can receive SRS transmissions. For example, BS 110 can monitor RS resources to find SRS transmissions based on one or more parameters configured for UE 120. BS 110 can determine channel information based at least in part on RS resources. In this way, the versatility of SRS configuration and transmission is improved, and support for multi-user SRS transmissions is provided by means of improved versatility.

[0097] As indicated above, Figure 5-9 This is provided as an example. Other examples may differ from the one provided. Figure 5-9 The example described.

[0098] Figure 10 This is a diagram illustrating, for example, an example process 1000 performed by a UE according to various aspects of this disclosure. Example process 1000 is an example in which a UE (e.g., UE 120) performs operations associated with SRS reconfiguration.

[0099] like Figure 10 As shown, in some aspects, process 1000 may include: receiving configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission (block 1010). For example, the UE (e.g., using...) Figure 12 The receiving component 1202 depicted herein can receive configuration information for RS transmission configured with a repetition factor. The configuration information may indicate one or more parameters for RS transmission, such as at least one of a sequence hopping configuration associated with RS transmission, a cyclic shift offset configuration associated with RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols, as described above. In some aspects, the RS transmission is an SRS transmission.

[0100] like Figure 10 As further shown, in some aspects, process 1000 may include: performing RS transmission using a repetition factor according to a configuration (block 1020). For example, the UE (e.g., using...) Figure 12 The transmission component 1204 described herein can perform RS transmission using a repetition factor as configured, as described above.

[0101] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0102] In the first aspect, the sequence transition configuration indicates that a first sequence is used for two or more RS symbols transmitted on a first subcarrier set and a second sequence is used for two or more RS symbols transmitted on a second subcarrier set.

[0103] In a second aspect, either alone or in combination with the first aspect, the sequence transition configuration indicates that a first sequence is used for two or more RS symbols associated with a first symbol index in a repeating group for RS transmission, and the sequence transition configuration indicates that a second sequence is used for two or more RS symbols associated with a second symbol index in a repeating group for RS transmission.

[0104] In the third aspect, either alone or in combination with one or more of the first and second aspects, two or more RS symbols associated with the first symbol index are transmitted on different subcarrier sets.

[0105] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, two or more RS symbols associated with the second symbol index are transmitted on different subcarrier sets.

[0106] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the cyclic shift offset configuration indicates multiple cyclic shift offsets corresponding to multiple RS symbols transmitted by the RS.

[0107] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the cyclic shift offset configuration indicates a first cyclic shift offset corresponding to a first set of RS symbols transmitted by the RS and a second cyclic shift offset corresponding to a second set of RS symbols transmitted by the RS.

[0108] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the first RS symbol set is associated with the first subcarrier set, and the second RS symbol set is associated with the second subcarrier set.

[0109] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the first RS symbol set is associated with the first symbol index, and the second RS symbol set is associated with the second symbol index.

[0110] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, two or more RS symbols associated with the first symbol index are transmitted on different subcarrier sets.

[0111] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, two or more RS symbols associated with the second symbol index are transmitted on different subcarrier sets.

[0112] In the eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, the first RS symbol set is associated with a partial frequency probe mode, and the second RS symbol set is associated with a full frequency probe mode.

[0113] In the twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, the first RS symbol set is associated with a first partial frequency probe mode, and the second RS symbol set is associated with a second partial frequency probe mode.

[0114] In the thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, the cyclic shift offset configuration is based at least in part on the time slots associated with the RS transmission.

[0115] In the fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, the cyclic shift offset configuration is at least partially based on a function relating to the slot number of the slot associated with the RS transmission to indicate the cyclic shift offset.

[0116] In the fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, the cyclic shift offset configuration indicates a list of cyclic shift offsets to be used for RS transmission.

[0117] In the sixteenth aspect, either alone or in combination with one or more of the first to fifteenth aspects, the cyclic shift offset configuration indicates an initial cyclic shift offset, and the process 1000 further includes: determining a list of cyclic shift offsets based at least in part on the initial cyclic shift offset and a predefined sequence.

[0118] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the RS transmission is associated with a modified maximum cyclic shift number based at least in part on configuration information indicating the one or more parameters used for the RS transmission.

[0119] In the eighteenth aspect, either alone or in combination with one or more of the first to seventeenth aspects, the frequency hopping configuration indicates that a first subcarrier set is used for a first RS symbol in adjacent RS symbols and a second subcarrier set is used for a second RS symbol in adjacent RS symbols.

[0120] In the nineteenth aspect, either alone or in combination with one or more of the first to eighteenth aspects, adjacent RS symbols include a first symbol group and a second symbol group, wherein the first RS symbol and the second RS symbol are respectively associated with a first symbol index and a second symbol index in the first symbol group, wherein the third RS symbol and the fourth RS symbol are respectively associated with a first symbol index and a second symbol index in the second symbol group, wherein a first subcarrier set is used for the third RS symbol, and wherein a second subcarrier set is used for the fourth RS symbol.

[0121] In the twentieth aspect, an information indication mode is configured, either alone or in combination with one or more of the first to nineteenth aspects, and the one or more parameters are defined according to the mode.

[0122] In the twenty-first aspect, either alone or in combination with one or more of the first to twentieth aspects, the configuration information indicates the repeating group associated with the one or more parameters.

[0123] although Figure 10 An example box of process 1000 is shown, but in some respects, process 1000 may include... Figure 10 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes of process 1000 can be executed in parallel.

[0124] Figure 11 This is a diagram illustrating, for example, an example process 1100 performed by a base station according to various aspects of this disclosure. Example process 1100 is an example in which a base station (e.g., base station 110) performs operations associated with SRS reconfiguration.

[0125] like Figure 11 As shown, in some aspects, process 1100 may include: transmitting configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission (block 1110). For example, a base station (e.g., using...) Figure 13The transmission component 1304 depicted herein can transmit configuration information for an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission. The one or more parameters may include at least one of the following: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols, as described above. In some aspects, the RS transmission is an SRS transmission.

[0126] like Figure 11 As further shown, in some aspects, process 1100 may include: receiving RS transmissions using a repetition factor according to a configuration (block 1120). For example, a base station (e.g., using...) Figure 13 The receiving component 1302 described herein can receive RS transmissions using a repetition factor as configured, as described above.

[0127] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0128] In the first aspect, the sequence transition configuration indicates that a first sequence is used for two or more RS symbols transmitted on a first subcarrier set and a second sequence is used for two or more RS symbols transmitted on a second subcarrier set.

[0129] In a second aspect, either alone or in combination with the first aspect, the sequence transition configuration indicates that a first sequence is used for two or more RS symbols associated with a first symbol index in a repeating group for RS transmission, and the sequence transition configuration indicates that a second sequence is used for two or more RS symbols associated with a second symbol index in a repeating group for RS transmission.

[0130] In the third aspect, either alone or in combination with one or more of the first and second aspects, two or more RS symbols associated with the first symbol index are transmitted on different subcarrier sets.

[0131] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, two or more RS symbols associated with the second symbol index are transmitted on different subcarrier sets.

[0132] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the cyclic shift offset configuration indicates multiple cyclic shift offsets corresponding to multiple RS symbols transmitted by the RS.

[0133] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the cyclic shift offset configuration indicates a first cyclic shift offset corresponding to a first set of RS symbols transmitted by the RS and a second cyclic shift offset corresponding to a second set of RS symbols transmitted by the RS.

[0134] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the first RS symbol set is associated with the first subcarrier set, and the second RS symbol set is associated with the second subcarrier set.

[0135] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the first RS symbol set is associated with the first symbol index, and the second RS symbol set is associated with the second symbol index.

[0136] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, two or more RS symbols associated with the first symbol index are transmitted on different subcarrier sets.

[0137] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, two or more RS symbols associated with the second symbol index are transmitted on different subcarrier sets.

[0138] In the eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, the first RS symbol set is associated with a partial frequency probe configuration, and the second RS symbol set is associated with a full frequency probe configuration.

[0139] In the twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, the first RS symbol set is associated with the first partial frequency probe configuration, and the second RS symbol set is associated with the second partial frequency probe configuration.

[0140] In the thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, the cyclic shift offset configuration is based at least in part on the time slots associated with the RS transmission.

[0141] In the fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, the cyclic shift offset configuration is at least partially based on a function relating to the slot number of the slot associated with the RS transmission to indicate the cyclic shift offset.

[0142] In the fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, the cyclic shift offset configuration indicates a list of cyclic shift offsets to be used for RS transmission.

[0143] In the sixteenth aspect, either alone or in combination with one or more of the first to fifteenth aspects, the cyclic shift offset configuration indicates an initial cyclic shift offset, and the list of cyclic shift offsets is defined at least in part based on the initial cyclic shift offset and a predefined sequence.

[0144] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the RS transmission is associated with a modified maximum cyclic shift number based at least in part on configuration information indicating the one or more parameters used for the RS transmission.

[0145] In the eighteenth aspect, either alone or in combination with one or more of the first to seventeenth aspects, the frequency hopping configuration indicates that a first subcarrier set is used for a first RS symbol in adjacent RS symbols and a second subcarrier set is used for a second RS symbol in adjacent RS symbols.

[0146] In the nineteenth aspect, either alone or in combination with one or more of the first to eighteenth aspects, adjacent RS symbols include a first symbol group and a second symbol group, wherein the first RS symbol and the second RS symbol are respectively associated with a first symbol index and a second symbol index in the first symbol group, wherein the third RS symbol and the fourth RS symbol are respectively associated with a first symbol index and a second symbol index in the second symbol group, wherein a first subcarrier set is used for the third RS symbol, and wherein a second subcarrier set is used for the fourth RS symbol.

[0147] In the twentieth aspect, an information indication mode is configured, either alone or in combination with one or more of the first to nineteenth aspects, and the one or more parameters are defined according to the mode.

[0148] In the twenty-first aspect, either alone or in combination with one or more of the first to twentieth aspects, the configuration information indicates the repeating group associated with the one or more parameters.

[0149] although Figure 11 An example box of process 1100 is shown, but in some respects, process 1100 may include... Figure 11 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 1100 can be executed in parallel.

[0150] Figure 12This is a block diagram of an example device 1200 for wireless communication according to various aspects of this disclosure. Device 1200 may be a UE, or a UE may include device 1200. In some aspects, device 1200 includes a receiving component 1202 and a transmitting component 1204, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1200 may use the receiving component 1202 and the transmitting component 1204 to communicate with another device 1206 (such as a UE, a base station, or another wireless communication device). As further shown, device 1200 may include a determining component 1208, etc.

[0151] In some respects, device 1200 can be configured to perform the functions described in this article. Figure 4-9 One or more operations described herein. Additionally or alternatively, device 1200 may be configured to perform one or more processes described herein (such as...). Figure 10 Process 1000) or a combination thereof. In some aspects, device 1200 and / or Figure 12 One or more components shown may include the above combination Figure 2 One or more components of the described UE. Additionally or alternatively, Figure 12 One or more components shown can be combined as described above. Figure 2 Implemented within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of that component.

[0152] Receiver 1202 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 1206. Receiver 1202 may provide the received communications to one or more other components of device 1206. In some aspects, receiver 1202 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signal to one or more other components of device 1206. In some aspects, receiver 1202 may include combinations of the above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0153] Transmission component 1204 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to device 1206. In some aspects, one or more other components of device 1206 can generate communications and provide the generated communications to transmission component 1204 for transmission to device 1206. In some aspects, transmission component 1204 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and can transmit the processed signals to device 1206. In some aspects, transmission component 1204 can include combinations of the above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof. In some aspects, the transmit component 1204 may be co-located with the receive component 1202 in a transceiver.

[0154] The receiving component 1202 can receive configuration information configuring an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols. The transmitting component 1204 can perform the RS transmission using the repetition factor according to the configuration. The determining component 1208 can determine or implement the one or more parameters at least in part based on the configuration information.

[0155] Figure 12 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 12 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 12 The two or more components shown can be implemented within a single component, or Figure 12 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 12 The component collection (one or more components) shown in the diagram can be executed as described by... Figure 12 The other set of components shown in the diagram performs one or more functions.

[0156] Figure 13This is a block diagram of an example device 1300 for wireless communication according to various aspects of this disclosure. Device 1300 may be a base station, or a base station may include device 1300. In some aspects, device 1300 includes a receiving component 1302 and a transmitting component 1304, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1300 may use the receiving component 1302 and the transmitting component 1304 to communicate with another device 136 (such as a UE, a base station, or another wireless communication device). As further shown, device 1300 may include a configuration component 1308, etc.

[0157] In some respects, device 1300 can be configured to perform the functions described in this article. Figure 4-9 One or more operations described herein. Additionally or alternatively, device 1300 may be configured to perform one or more processes described herein (such as...). Figure 11 Process 1100) or a combination thereof. In some aspects, device 1300 and / or Figure 13 One or more components shown may include the above combination Figure 2 One or more components of the described base station. Additional or alternative. Figure 13 One or more components shown can be combined as described above. Figure 2 Implemented within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of that component.

[0158] Receiver 1302 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 1306. Receiver 1302 may provide the received communications to one or more other components of device 1306. In some aspects, receiver 1302 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signal to one or more other components of device 1306. In some aspects, receiver 1302 may include combinations of the above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0159] Transmission component 1304 may transmit communications (such as reference signals, control information, data communications, or combinations thereof) to device 1306. In some aspects, one or more other components of device 1306 may generate communications and provide the generated communications to transmission component 1304 for transmission to device 1306. In some aspects, transmission component 1304 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1306. In some aspects, transmission component 1304 may include combinations of the above. Figure 2 The described base station includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1304 may coexist with the receive component 1302 in a transceiver.

[0160] Transmission component 1304 can transmit configuration information for an RS transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols. Receiving component 1302 can receive the RS transmission using the repetition factor according to the configuration. Configuration component 1308 can determine the configuration information and / or cause transmission component 1304 to transmit the configuration information.

[0161] Figure 13 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 13 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 13 The two or more components shown can be implemented within a single component, or Figure 13 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 13 The component collection (one or more components) shown in the diagram can be executed as described by... Figure 13 The other set of components shown in the diagram performs one or more functions.

[0162] The following provides an overview of some aspects of this disclosure:

[0163] Aspect 1: A wireless communication method performed by a user equipment (UE) comprising: receiving configuration information configuring a reference signal (RS) transmission having a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and performing the RS transmission using the repetition factor according to the configuration.

[0164] Aspect 2: The method of aspect 1, wherein the sequence transition configuration indicates that a first sequence is used for two or more RS symbols transmitted in a first subcarrier set and a second sequence is used for two or more RS symbols transmitted in a second subcarrier set.

[0165] Aspect 3: The method of aspect 1, wherein the sequence transition configuration indicates that a first sequence is used for two or more RS symbols associated with a first symbol index in the repeating group in the RS transmission, and wherein the sequence transition configuration indicates that a second sequence is used for two or more RS symbols associated with a second symbol index in the repeating group in the RS transmission.

[0166] Aspect 4: The method of aspect 3, wherein two or more RS symbols associated with the first symbol index are transmitted on different subcarrier sets.

[0167] Aspect 5: The method of aspect 3, wherein the two or more RS symbols associated with the second symbol index transmitted by the RS are transmitted on different subcarrier sets.

[0168] Aspect 6: The method of any of Aspects 1-5, wherein the cyclic shift offset configuration indicates a plurality of cyclic shift offsets corresponding to a plurality of RS symbols transmitted by the RS.

[0169] Aspect 7: The method of any of Aspects 1-5, wherein the cyclic shift offset configuration indicates a first cyclic shift offset corresponding to a first set of RS symbols of the RS transmission and a second cyclic shift offset corresponding to a second set of RS symbols of the RS transmission.

[0170] Aspect 8: The method of aspect 7, wherein the first RS symbol set is associated with a first subcarrier set, and the second RS symbol set is associated with a second subcarrier set.

[0171] Aspect 9: The method of aspect 7, wherein the first RS symbol set is associated with a first symbol index, and the second RS symbol set is associated with a second symbol index.

[0172] Aspect 10: The method of aspect 9, wherein two or more RS symbols associated with the first symbol index are transmitted on different subcarrier sets.

[0173] Aspect 11: The method of aspect 9, wherein two or more RS symbols associated with the second symbol index are transmitted on different subcarrier sets.

[0174] Aspect 12: The method of aspect 7, wherein the first RS symbol set is associated with a partial frequency probe mode and the second RS symbol set is associated with a full frequency probe mode.

[0175] Aspect 13: The method of aspect 7, wherein the first RS symbol set is associated with a first part of the frequency probe mode, and the second RS symbol set is associated with a second part of the frequency probe mode.

[0176] Aspect 14: The method of any of Aspects 1-13, wherein the cyclic shift offset configuration is at least partially based on the time slot associated with the RS transmission.

[0177] Aspect 15: The method of any of Aspects 1-14, wherein the cyclic shift offset configuration is at least in part based on a function relating to the slot number of the slot associated with the RS transmission to indicate the cyclic shift offset.

[0178] Aspect 16: The method of any of Aspects 1-15, wherein the cyclic shift offset configuration indicates a list of cyclic shift offsets to be used for the RS transmission.

[0179] Aspect 17: A method of any of Aspects 1-16, wherein the cyclic shift offset configuration indicates an initial cyclic shift offset, and wherein the method further comprises: determining a list of cyclic shift offsets based at least in part on the initial cyclic shift offset and a predefined sequence.

[0180] Aspect 18: The method of any of Aspects 1-17, wherein the RS transmission is associated with a modified maximum cyclic shift number based at least in part on the configuration information indicating the one or more parameters for the RS transmission.

[0181] Aspect 19: The method of any of Aspects 1-18, wherein the frequency hopping configuration indicates that a first subcarrier set is used for a first RS symbol in the adjacent RS symbol and a second subcarrier set is used for a second RS symbol in the adjacent RS symbol.

[0182] Aspect 20: The method of aspect 19, wherein the adjacent RS symbol includes a first symbol group and a second symbol group, wherein the first RS symbol and the second RS symbol are associated with a first symbol index and a second symbol index in the first symbol group, respectively, wherein the third RS symbol and the fourth RS symbol are associated with a first symbol index and a second symbol index in the second symbol group, respectively, wherein the first subcarrier set is used for the third RS symbol, and wherein the second subcarrier set is used for the fourth RS symbol.

[0183] Aspect 21: The method of any of Aspects 1-20, wherein the configuration information indicates a mode, and wherein the one or more parameters are defined according to the mode.

[0184] Aspect 22: The method of any of Aspects 1-21, wherein the configuration information indicates a repeating group associated with the one or more parameters.

[0185] Aspect 23: A wireless communication method performed by a base station, comprising: transmitting configuration information configuring a reference signal (RS) transmission having a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and receiving the RS transmission using the repetition factor according to the configuration.

[0186] Aspect 24: The method of aspect 23, wherein the sequence transition configuration indicates that a first sequence is used for two or more RS symbols transmitted in a first subcarrier set and a second sequence is used for two or more RS symbols transmitted in a second subcarrier set.

[0187] Aspect 25: The method of aspect 23, wherein the sequence transition configuration indicates that a first sequence is used for two or more RS symbols associated with a first symbol index in the repeating group in the RS transmission, and wherein the sequence transition configuration indicates that a second sequence is used for two or more RS symbols associated with a second symbol index in the repeating group in the RS transmission.

[0188] Aspect 26: The method of aspect 25, wherein two or more RS symbols associated with the first symbol index are transmitted on different subcarrier sets.

[0189] Aspect 27: The method of aspect 25, wherein two or more RS symbols associated with the second symbol index are transmitted on different subcarrier sets.

[0190] Aspect 28: The method of any of Aspects 23-27, wherein the cyclic shift offset configuration indicates a plurality of cyclic shift offsets corresponding to a plurality of RS symbols transmitted by the RS.

[0191] Aspect 29: The method of any of Aspects 23-28, wherein the cyclic shift offset configuration indicates a first cyclic shift offset corresponding to a first set of RS symbols of the RS transmission and a second cyclic shift offset corresponding to a second set of RS symbols of the RS transmission.

[0192] Aspect 30: The method of aspect 29, wherein the first RS symbol set is associated with a first subcarrier set, and the second RS symbol set is associated with a second subcarrier set.

[0193] Aspect 31: The method of aspect 29, wherein the first RS symbol set is associated with a first symbol index, and the second RS symbol set is associated with a second symbol index.

[0194] Aspect 32: The method of aspect 31, wherein two or more RS symbols associated with the first symbol index are transmitted on different subcarrier sets.

[0195] Aspect 33: The method of aspect 31, wherein the two or more RS symbols associated with the second symbol index of the RS transmission are transmitted on different subcarrier sets.

[0196] Aspect 34: The method of aspect 29, wherein the first RS symbol set is associated with a partial frequency probe configuration and the second RS symbol set is associated with a full frequency probe configuration.

[0197] Aspect 35: The method of aspect 29, wherein the first RS symbol set is associated with a first portion of the frequency probe configuration, and the second RS symbol set is associated with a second portion of the frequency probe configuration.

[0198] Aspect 36: The method of any of Aspects 23-35, wherein the cyclic shift offset configuration is at least partially based on the time slot associated with the RS transmission.

[0199] Aspect 37: The method of any of Aspects 23-36, wherein the cyclic shift offset configuration is at least in part based on a function relating to the slot number of the slot associated with the RS transmission to indicate the cyclic shift offset.

[0200] Aspect 38: The method of any of Aspects 23-37, wherein the cyclic shift offset configuration indicates a list of cyclic shift offsets to be used for the RS transmission.

[0201] Aspect 39: The method of any of Aspects 23-28, wherein the cyclic shift offset configuration indicates an initial cyclic shift offset, and wherein the list of cyclic shift offsets is defined at least in part based on the initial cyclic shift offset and a predefined sequence.

[0202] Aspect 40: The method of any of Aspects 23-39, wherein the RS transmission is associated with a modified maximum cyclic shift number based at least in part on the configuration information indicating the one or more parameters for the RS transmission.

[0203] Aspect 41: The method of any of Aspects 23-40, wherein the frequency hopping configuration indicates that a first subcarrier set is used for a first RS symbol in the adjacent RS symbol and a second subcarrier set is used for a second RS symbol in the adjacent RS symbol.

[0204] Aspect 42: The method of aspect 41, wherein the adjacent RS symbol includes a first symbol group and a second symbol group, wherein the first RS symbol and the second RS symbol are respectively associated with a first symbol index and a second symbol index in the first symbol group, wherein the third RS symbol and the fourth RS symbol are respectively associated with a first symbol index and a second symbol index in the second symbol group, wherein the first subcarrier set is used for the third RS symbol, and wherein the second subcarrier set is used for the fourth RS symbol.

[0205] Aspect 43: The method of any of Aspects 23-42, wherein the configuration information indicates a mode, and wherein the one or more parameters are defined according to the mode.

[0206] Aspect 44: The method of any of Aspects 23-43, wherein the configuration information indicates a repeating group associated with the one or more parameters.

[0207] Aspect 45: An apparatus for wireless communication at a device, comprising: a processor, a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform methods as described in one or more of aspects 1-22.

[0208] Aspect 46: An apparatus for wireless communication, comprising: a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform methods as described in one or more aspects of aspects 1-22.

[0209] Aspect 47: An apparatus for wireless communication, comprising: at least one means for performing a method as described in one or more aspects of aspects 1-22.

[0210] Aspect 48: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in one or more aspects of aspects 1-22.

[0211] Aspect 49: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform methods as described in one or more aspects of aspects 1-22.

[0212] Aspect 50: An apparatus for wireless communication at a device, comprising: a processor, a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform methods as described in one or more aspects of aspects 23-44.

[0213] Aspect 51: An apparatus for wireless communication, comprising: a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform methods as described in one or more aspects of aspects 23-44.

[0214] Aspect 52: An apparatus for wireless communication, comprising: at least one means for performing a method as described in one or more aspects of aspects 23-44.

[0215] Aspect 53: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in one or more aspects of aspects 23-44.

[0216] Aspect 54: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform methods as described in one or more aspects of aspects 23-44.

[0217] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the foregoing disclosure or may be obtained through practice.

[0218] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of hardware and software. "Software" should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and / or functions, whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. As used herein, processors are implemented using hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limited in any way. Thus, the operation and behavior of these systems and / or methods are described herein without reference to any specific software code—it is understood that software and hardware can be designed to implement these systems and / or methods, at least in part, based on the descriptions herein.

[0219] As used in this article, depending on the context, a threshold can refer to a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0220] Although specific combinations of features are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of aspects. In fact, many of these features can be combined in ways not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below may be directly subordinated to only one claim, the disclosure of aspects includes each dependent claim being combined with each other claim in this set of claims. As used herein, the phrase “at least one of” refers to any combination of these items, including single members. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination having multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0221] The elements, actions, or instructions used herein should not be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “a certain” are intended to include one or more items and may be used interchangeably with “one or more.” Additionally, as used herein, the article “the” is intended to include one or more items referenced in conjunction with the article “the” and may be used interchangeably with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Moreover, as used herein, the terms “have,” “contain,” “include,” etc., are intended to be open-ended terms. Additionally, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Moreover, as used herein, the term “or” is intended to be inclusive when used in a sequence and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., in combination with “either of” or “only one of”).

Claims

1. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors are operatively coupled to the memory, and the memory and the one or more processors are configured to: Receive configuration information for transmitting a reference signal RS with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission, the one or more parameters including at least one of the following: The sequence transition configuration associated with the RS transmission, The cyclic shift offset configuration associated with the RS transmission, or Frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols; and The RS transmission is performed using the repetition factor according to the configuration.

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