Method and apparatus for time domain bundling of sounding reference signals

Abstract

Aspects relate to sounding reference signal (SRS) time domain bundling. Phase continuity can be maintained across SRS transmissions on multiple SRS occasions to enable a receiver to jointly process the SRS transmissions. In some examples, a user equipment can expect to be configured with SRS transmissions on multiple SRS occasions, where SRS configurations for different SRS transmissions on different SRS occasions specify the same parameters. For example, a first SRS configuration for a first SRS transmission on a first SRS occasion can specify a first set of spatial relation information. Further, a second SRS configuration for a second SRS transmission on a second SRS occasion can specify the same first set of spatial relation information. In this way, phase continuity can be maintained between the first SRS transmission on the first SRS occasion and the second SRS transmission on the second SRS occasion.

Description

[0001] Cross-references to related applications

[0002] This patent application claims priority and interest in pending non-provisional application No. 17 / 481,992 filed with the U.S. Patent and Trademark Office on September 22, 2021, and provisional application No. 63 / 085,074 filed with the U.S. Patent and Trademark Office on September 29, 2020, both of which have been assigned to the assignee of this application and are hereby expressly incorporated by reference as fully set forth below and for all applicable purposes. Technical Field

[0003] The techniques discussed below generally relate to wireless communication, and more particularly to clustering techniques for probing the timing of reference signals.

[0004] introduction

[0005] Next-generation wireless communication systems (e.g., 5GS) may include a 5G core network and a 5G radio access network (RAN), such as a new radio (NR)-RAN. NR-RAN supports communication via one or more cells. For example, wireless communication equipment (such as user equipment (UE)) may access a first cell of a first base station (BS) (such as a gNB) and / or access a second cell of a second BS.

[0006] A BS can schedule access to a cell to support access for multiple UEs. For example, a BS can allocate different resources (e.g., time-domain and frequency-domain resources) for different UEs operating within the BS's cell.

[0007] The UE can transmit a reference signal to enable the base station to estimate the channel between the UE and the BS. For example, the UE can generate a probe reference signal (SRS) based on a known sequence and transmit the SRS on resources allocated by the BS. The BS can then estimate the quality of the uplink channel from the UE based on the SRS and / or determine other information based on the SRS. The BS can use this channel estimation or other information to, for example, allocate resources more efficiently and / or specify transmission parameters for communication on the channel.

[0008] A brief overview of some examples

[0009] The following provides an overview of one or more aspects of this disclosure to provide a basic understanding of these aspects. This overview is not an exhaustive summary of all conceived features of this disclosure, nor is it intended to identify key or defining elements of all aspects of this disclosure, nor to define the scope of any or all aspects of this disclosure. Its sole purpose is to provide some concepts of one or more aspects of this disclosure in one form as a prelude to the more detailed description that follows.

[0010] In some examples, a method for wireless communication at a user equipment is disclosed. The method can include receiving a first resource allocation for scheduling a first sounding reference signal (SRS) transmission for a first SRS occasion and a first SRS configuration for the first SRS transmission; receiving a second resource allocation for scheduling a second SRS transmission for a second SRS occasion and a second SRS configuration for the second SRS transmission; receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; and transmitting the first SRS transmission during the first SRS occasion and the second SRS transmission during the second SRS occasion after verifying whether the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0011] In some examples, a user equipment can include a transceiver, a memory, and a processor coupled to the transceiver and the memory. The processor can be configured to receive, via the transceiver, a first resource allocation for scheduling a first sounding reference signal (SRS) transmission for a first SRS occasion and a first SRS configuration for the first SRS transmission; receive, via the transceiver, a second resource allocation for scheduling a second SRS transmission for a second SRS occasion and a second SRS configuration for the second SRS transmission; receive, via the transceiver, an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; and transmit, via the transceiver, the first SRS transmission during the first SRS occasion and the second SRS transmission during the second SRS occasion after verifying whether the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0012] In some examples, a user equipment can include means for receiving a first resource allocation for scheduling a first sounding reference signal (SRS) transmission for a first SRS occasion and a first SRS configuration for the first SRS transmission; means for receiving a second resource allocation for scheduling a second SRS transmission for a second SRS occasion and a second SRS configuration for the second SRS transmission; means for receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; and means for transmitting the first SRS transmission during the first SRS occasion and the second SRS transmission during the second SRS occasion after verifying whether the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0013] In some examples, an article for a user equipment includes a non-transitory computer- readable medium having instructions stored therein, the instructions executable by one or more processors of the user equipment to: receive a first resource allocation for scheduling a first sounding reference signal (SRS) transmission for a first SRS occasion and a first SRS configuration for the first SRS transmission; receive a second resource allocation for scheduling a second SRS transmission for a second SRS occasion and a second SRS configuration for the second SRS transmission; receive an indication that phase continuity is to be maintained across the first SRS transmission and the second SRS transmission; and transmit the first SRS transmission during the first SRS occasion and the second SRS transmission during the second SRS occasion after verifying whether the phase continuity will be maintained across the first SRS transmission and the second SRS transmission using the first SRS configuration and the second SRS configuration.

[0014] In some examples, a method for wireless communication at a base station is disclosed. The method can include transmitting, to a user equipment, a plurality of sounding reference signal (SRS) configurations defined to maintain phase continuity across a plurality of SRS transmissions associated with a plurality of SRS occasions, receiving, from the user equipment, a first SRS transmission of the plurality of SRS transmissions during a first SRS occasion of the plurality of SRS occasions, receiving, from the user equipment, a second SRS transmission of the plurality of SRS transmissions during a second SRS occasion of the plurality of SRS occasions, and jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0015] In some examples, a base station can include a transceiver, a memory, and a processor coupled to the transceiver and the memory. The processor can be configured to transmit, to a user equipment via the transceiver, a plurality of sounding reference signal (SRS) configurations defined to maintain phase continuity across a plurality of SRS transmissions associated with a plurality of SRS occasions, receive, from the user equipment via the transceiver, a first SRS transmission of the plurality of SRS transmissions during a first SRS occasion of the plurality of SRS occasions, receive, from the user equipment via the transceiver, a second SRS transmission of the plurality of SRS transmissions during a second SRS occasion of the plurality of SRS occasions, and jointly process the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0016] In some examples, a base station may include: means for transmitting a plurality of detection reference signal (SRS) configurations to a user equipment, the plurality of SRS configurations being defined to maintain phase continuity across a plurality of SRS transmissions associated with a plurality of SRS timings; means for receiving a first SRS transmission from the user equipment during a first SRS timing of the plurality of SRS transmissions; means for receiving a second SRS transmission from the user equipment during a second SRS timing of the plurality of SRS transmissions; and means for jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0017] In some examples, an article of manufacture for use by a base station includes a non-transient computer-readable medium storing instructions executable by one or more processors of the base station to: transmit a plurality of detection reference signal (SRS) configurations to a user equipment, the plurality of SRS configurations being defined to maintain phase continuity across a plurality of SRS transmissions associated with a plurality of SRS timings; receive a first SRS transmission of the plurality of SRS transmissions from the user equipment during a first SRS timing of the plurality of SRS timings; receive a second SRS transmission of the plurality of SRS transmissions from the user equipment during a second SRS timing of the plurality of SRS timings; and jointly process the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0018] These and other aspects of this disclosure will become more fully understood upon reading the following detailed description. Other aspects, features, and examples of this disclosure will be apparent to those skilled in the art after reading the following description of specific exemplary aspects of this disclosure in conjunction with the accompanying drawings. Although features of this disclosure may be discussed below with respect to certain examples and drawings, all examples of this disclosure may include one or more of the advantageous features discussed herein. In other words, although one or more examples may be discussed having certain advantageous features, one or more such features may also be used according to the various examples of this disclosure discussed herein. Similarly, although exemplary aspects may be discussed below as examples of devices, systems, or methods, it should be understood that such exemplary aspects can be implemented in various devices, systems, and methods. Brief description of the attached diagram

[0020] Figure 1 It is a schematic explanation based on some aspects of wireless communication systems.

[0021] Figure 2 It is a conceptual explanation based on examples of radio access networks from various aspects.

[0022] Figure 3This is a schematic illustration of an example of utilizing radio resources in an air interface of orthogonal frequency division multiplexing (OFDM) based on some aspects.

[0023] Figure 4 This is a conceptual explanation based on examples of broadband probe reference signal (SRS) resource allocation.

[0024] Figure 5 This is a conceptual explanation based on examples of SRS frequency hopping resource allocation.

[0025] Figure 6 This is a conceptual diagram illustrating an example of SRS bundles based on some aspects.

[0026] Figure 7 This is a signaling diagram illustrating examples of signaling used for SRS transmission based on certain aspects.

[0027] Figure 8 This is a block diagram illustrating an example of the hardware implementation of a user equipment using a processing system based on some aspects.

[0028] Figure 9 This is a flowchart of a first example SRS transmission method based on some aspects.

[0029] Figure 10 This is a flowchart of a second example SRS transmission method based on some aspects.

[0030] Figure 11 This is a flowchart of a third example SRS transmission method based on some aspects.

[0031] Figure 12 This is a block diagram illustrating an example of the hardware implementation of a base station using a processing system based on certain aspects.

[0032] Figure 13 This is a flowchart of a first example method for jointly processing SRS transmissions, based on several aspects.

[0033] Figure 14 This is a flowchart of a second example method for jointly processing SRS transmissions, based on some aspects.

[0034] Figure 15 This is a flowchart of a third example method for jointly processing SRS transmissions, based on several aspects.

[0035] Detailed description

[0036] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent only the configurations in which the concepts described herein can be practiced. This detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0037] While aspects and examples are described herein by way of illustration of a few examples, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, aspects and / or uses may arise via integrated chip examples and other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / shopping devices, medical devices, AI-enabled devices, etc.). While some examples may or may not be specific to a particular use case or application, broad applicability of the described innovations can emerge. The scope of implementations can range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical contexts, devices incorporating the described aspects and features may also necessarily include additional components and features for implementing and practicing the claimed and described examples. For example, the transmission and reception of wireless signals requires several components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The innovations described herein are intended to be implemented in a wide variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc., of various sizes, shapes, and configurations.

[0038] The base station can allocate a set of frequency resources for the UE to transmit SRS. In some examples, these frequency resources can be wideband resources or resources defined according to a frequency hopping mode. The base station can allocate resources for SRS transmission on multiple SRS times. In some examples, different SRS times can be separated in time by one or more time slots.

[0039] This disclosure relates in some respects to SRS time-domain bundled processing, which enables a base station (or some other receiver of an SRS transmission) to jointly process SRS transmissions across multiple SRS times. To facilitate such joint processing, in some examples, phase continuity can be maintained for SRS transmissions across multiple SRS times.

[0040] In some examples, the UE may be configured with SRS transmissions on multiple SRS times, where the SRS configurations for different SRS transmissions on different SRS times specify the same parameters. For example, the first SRS configuration for the first SRS transmission on the first SRS time may specify a first set of spatial relationship information. Furthermore, the second SRS configuration for the second SRS transmission on the second SRS time may specify the same first set of spatial relationship information. In this scenario, phase continuity can be maintained between the first SRS transmission on the first SRS time and the second SRS transmission on the second SRS time. Accordingly, the base station receiving the first and second SRS transmissions can jointly process the first and second SRS transmissions to estimate the SRS transmitted by the UE.

[0041] The various concepts presented throughout this disclosure can be implemented across a wide range of telecommunications systems, network architectures, and communication standards. Now refer to... Figure 1 The various aspects of this disclosure are explained with reference to a wireless communication system 100, by way of illustrative example and not limitation. The wireless communication system 100 includes three interaction domains: a core network 102, a radio access network (RAN) 104, and a user equipment (UE) 106. The wireless communication system 100 enables the UE 106 to perform data communication with an external data network 110 (such as, but not limited to, the Internet).

[0042] RAN 104 can implement any suitable one or more wireless communication technologies to provide radio access to UE 106. As an example, RAN 104 can operate according to the 3rd Generation Partnership Project (3GPP) New Radio (NR) specification (commonly referred to as 5G). As another example, RAN 104 can operate in a hybrid of 5G NR and the Evolved Universal Terrestrial Radio Access Network (eUTRAN) standard (commonly referred to as Long Term Evolution (LTE)). 3GPP refers to this hybrid RAN as Next Generation RAN, or NG-RAN. Of course, many other examples can be utilized within the scope of this disclosure.

[0043] As explained, RAN 104 includes multiple base stations 108. Broadly speaking, a base station is a network element in a radio access network responsible for radio transmissions to and from a UE in one or more cells. In different technologies, standards, or contexts, a base station may be referred to by those skilled in the art as a base transceiver station (BTS), radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), access point (AP), B-node (NB), evolved B-node (eNB), next-generation B-node (gNB), transmit / receive point (TRP), or some other suitable term. In some examples, a base station may include two or more co-located or non-co-located TRPs. Each TRP may communicate on the same or different carrier frequencies within the same or different frequency bands. In an example where RAN 104 operates according to both LTE and 5G NR standards, one of these base stations may be an LTE base station, while the other may be a 5G NR base station.

[0044] RAN 104 is further explained as supporting wireless communication for multiple mobile devices. In 3GPP standards, a mobile device may be referred to as User Equipment (UE), but may also be referred to by those skilled in the art as a Mobile Station (MS), Subscriber Station, Mobile Unit, Subscriber Unit, Radio Unit, Remote Unit, Mobile Equipment, Radio Equipment, Wireless Communication Equipment, Remote Equipment, Mobile Subscriber Station, Access Terminal (AT), Mobile Terminal, Radio Terminal, Remote Terminal, Handheld Device, Terminal, User Agent, Mobile Client, Client, or any other suitable term. A UE may be a device (e.g., a mobile device) that provides users with access to network services.

[0045] Within this disclosure, a "mobile" device does not necessarily need to be mobile and may be stationary. The term mobile device or mobile equipment refers to a wide variety of devices and technologies. A UE may include several hardware structural components that are sized, shaped, and arranged to facilitate communication; such components may include antennas, antenna arrays, RF chains, amplifiers, one or more processors, etc., electrically coupled to each other. For example, some non-limiting examples of mobile devices include mobile devices, cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal computers (PCs), notebooks, netbooks, smartbooks, tablets, personal digital assistants (PDAs), and a wide variety of embedded systems, such as those corresponding to the "Internet of Things" (IoT).

[0046] Additionally, mobile devices can be automobiles or other transportation vehicles, remote sensors or actuators, robots or robotic equipment, satellite radios, Global Positioning System (GPS) devices, object tracking devices, drones, multi-rotor aircraft, quadcopters, remote control devices, consumer and / or wearable devices (such as glasses), wearable cameras, virtual reality devices, smartwatches, health or fitness trackers, digital audio players (e.g., MP3 players), cameras, game consoles, etc. Additionally, mobile devices can be digital home or smart home devices, such as home audio, video and / or multimedia equipment, appliances, vending machines, smart lighting equipment, home security systems, smart meters, etc. Additionally, mobile devices can be smart energy devices, security devices, solar panels or solar arrays, municipal infrastructure equipment controlling electricity, lighting, water, etc. (e.g., smart grids), industrial automation and enterprise equipment, logistics controllers and / or agricultural equipment, etc. Furthermore, mobile devices can provide connected medical or telemedicine support, such as remote healthcare. Remote healthcare devices may include remote healthcare monitoring devices and remote healthcare supervision devices, whose communications may be given priority or preferential access over other types of information, for example, in the form of priority access for critical service data transmission and / or relevant QoS for critical service data transmission.

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

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

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

[0050] like Figure 1 As explained, scheduling entity 108 may broadcast downlink traffic 112 to one or more scheduled entities (e.g., one or more UEs 106). Broadly speaking, scheduling entity 108 is a node or device responsible for scheduling traffic (including downlink traffic 112 and, in some examples, uplink traffic 116 from one or more scheduled entities (e.g., one or more UEs 106) to scheduling entity 108) in a wireless communication network. On the other hand, a scheduled entity (e.g., UE 106) is a node or device that receives downlink control information 114 (including, but not limited to, scheduling information (e.g., permission), synchronization or timing information), or other control information from another entity in the wireless communication network (such as scheduling entity 108). Scheduled entity 106 may further transmit uplink control information 118 (including, but not limited to, scheduling request or feedback information) or other control information to scheduling entity 108.

[0051] Additionally, uplink control information 118 and / or downlink control information 114 and / or downlink traffic 112 and / or uplink traffic 116 information can be transmitted on a waveform that can be time-divided into frames, subframes, time slots, and / or symbols. As used herein, a symbol may refer to a time unit in an Orthogonal Frequency Division Multiplexing (OFDM) waveform that carries one resource element (RE) per subcarrier. A time slot may carry 7 or 14 OFDM symbols. A subframe may refer to a duration of 1 millisecond (ms). Multiple subframes or time slots may be grouped together to form a single frame or radio frame. Within this disclosure, a frame may refer to a predetermined duration (e.g., 10 ms) for wireless transmission, wherein each frame comprises, for example, 10 subframes, each 1 ms in length. Of course, these definitions are not required, and any suitable scheme can be used to organize the waveform, and various time divisions of the waveform may have any suitable duration.

[0052] Generally, base station 108 may include a backhaul interface for communicating with the backhaul portion 120 of wireless communication system 100. Backhaul portion 120 provides a link between base station 108 and core network 102. Furthermore, in some examples, the backhaul network provides interconnection between the respective base stations 108. Various types of backhaul interfaces may be employed, such as a direct physical connection using any suitable transport network, a virtual network, etc.

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

[0054] Now refer to Figure 2 The illustrative example, and not a limitation, of a radio access network (RAN) 200 according to some aspects of this disclosure is provided. In some examples, the RAN 200 may be associated with the RAN 200 described above and in Figure 1 The RAN104 in the Chinese explanation is the same.

[0055] The geographic area covered by RAN 200 can be divided into several cellular areas (cells), which can be uniquely identified by user equipment (UE) based on an identifier broadcast across the geographic area from an access point or base station. Figure 2 Cells 202, 204, 206, and 208 are described, each of which may include one or more sectors (not shown). A sector is a sub-area of ​​a cell. All sectors within a cell are served by the same base station. Radio links within a sector may be identified by a single logical identifier belonging to that sector. In a cell divided into sectors, multiple sectors within the cell may be formed by an antenna array, where each antenna is responsible for communication with UEs within a portion of the cell.

[0056] It can be deployed using various base stations. For example, in Figure 2 In this example, two base stations (base station 210 and base station 212) are shown in cells 202 and 204. A third base station (base station 214) is shown as a remote radio head (RRH) 216 controlling cell 206. That is, the base station may have an integrated antenna, or it may be connected to the antenna or RRH 216 by a feed cable. In the illustrated example, cells 202, 204, and 206 may be referred to as macrocells because base stations 210, 212, and 214 support cells with large sizes. Furthermore, base station 218 is shown in cell 208, which may overlap with one or more macrocells. In this example, cell 208 may be referred to as a small cell (e.g., microcell, picocell, femtocell, home base station, home B-node, home evolved B-node, etc.) because base station 218 supports cells with relatively small sizes. Cell size settings can be determined based on system design and component constraints.

[0057] It will be understood that RAN 200 may include any number of radio base stations and cells. Furthermore, relay nodes may be deployed to extend the size or coverage area of ​​a given cell. Base stations 210, 212, 214, and 218 provide radio access points to the core network for any number of mobile devices. In some examples, base stations 210, 212, 214, and / or 218 may be connected to those described above and in… Figure 1 The scheduling entity 108 described in the middle is the same as or similar to it.

[0058] Figure 2 This further includes an unmanned aerial vehicle (UAV) 220, which may be a drone or a quadcopter. The UAV 220 can be configured to function as a base station, or more specifically as a mobile base station. That is, in some examples, the cell may not be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile base station (such as the UAV 220).

[0059] Within RAN 200, a cell may include UEs capable of communicating with one or more sectors of each cell. Furthermore, each base station 210, 212, 214, 218, and UAV 220 may be configured to provide access to the core network 102 for all UEs within the respective cell (see [link]). Figure 1 Access points. For example, UEs 222 and 224 may communicate with base station 210, UEs 226 and 228 may communicate with base station 212, UEs 230 and 232 may communicate with base station 214 via RRH 216, UE 234 may communicate with base station 218, and UE 236 may communicate with mobile base station (such as UAV 220). In some examples, UEs 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, and / or 242 may communicate with the access points described above and in... Figure 1 The UE / scheduled entity 106 described in the text is the same as or similar to the UE. In some examples, the UAV 220 (e.g., a quadcopter) can be a mobile network node and can be configured to act as a UE. For example, the UAV 220 can operate within cell 202 by communicating with base station 210.

[0060] In a further aspect of RAN 200, sidelink signaling can be used between UEs without relying on scheduling or control information from the base station. Sidelink communication can be used in, for example, device-to-device (D2D) networks, peer-to-peer (P2P) networks, vehicle-to-vehicle (V2V) networks, vehicle-to-everything (V2X) networks, and / or other suitable sidelink networks. For example, two or more UEs (e.g., UEs 238, 240, and 242) can communicate with each other using sidelink signal 237 without relaying the communication through the base station. In some examples, UEs 238, 240, and 242 can each act as a scheduling entity or transmitting sidelink device and / or via a scheduling entity or receiving sidelink device to schedule resources and communicate sidelink signal 237 therebetween without relying on scheduling or control information from the base station. In other examples, two or more UEs (e.g., UEs 226 and 228) within the coverage area of ​​a base station (e.g., base station 212) may also communicate sidelink signal 227 on a direct link (sidelink) without needing to communicate through base station 212. In this example, base station 212 may allocate resources to UEs 226 and 228 for sidelink communication.

[0061] In RAN 200, the ability of a UE to communicate independently of its location while on the move is referred to as mobility. The various physical channels between the UE and RAN 200 are generally established, maintained, and released under the control of the Access and Mobility Management Function (AMF). In some scenarios, the AMF may include a Security Context Management Function (SCMF) and a Security Anchor Function (SEAF) that performs authentication. The SCMF can manage the security context of both the control plane and user plane functionalities, either entirely or partially.

[0062] In various aspects of this disclosure, RAN 200 may utilize DL-based mobility or UL-based mobility to achieve mobility and handover (i.e., the UE's connection is transferred from one radio channel to another). In a network configured for DL-based mobility, during a call with a scheduling entity, or at any other time, the UE may monitor various parameters of the signal from its serving cell and various parameters of neighboring cells. Depending on the quality of these parameters, the UE may maintain communication with one or more neighboring cells. During this time, if the UE moves from one cell to another, or if the signal quality from a neighboring cell exceeds the signal quality from the serving cell for a given amount of time, the UE may perform a handover or handover from the serving cell to a neighboring (target) cell. For example, UE 224 may move from a geographic area corresponding to its serving cell 202 to a geographic area corresponding to a neighboring cell 206. When the signal strength or quality from the neighboring cell 206 exceeds the signal strength or quality from its serving cell 202 for a given amount of time, UE 224 may transmit a report message indicating this condition to its serving base station 210. In response, UE 224 may receive a handover command and may undergo a handover to cell 206.

[0063] In a network configured for UL-based mobility, the UL reference signal from each UE can be used by the network to select a serving cell for each UE. In some examples, base stations 210, 212, and 214 / 216 can broadcast unified synchronization signals (e.g., unified primary synchronization signal (PSS), unified secondary synchronization signal (SSS), and unified physical broadcast channel (PBCH)). UEs 222, 224, 226, 228, 230, and 232 can receive the unified synchronization signals, derive carrier frequencies and time slot timings from these synchronization signals, and transmit uplink pilots or reference signals in response to the derived timings. The uplink pilot signal transmitted by a UE (e.g., UE 224) can be received concurrently by two or more cells (e.g., base stations 210 and 214 / 216) within RAN 200. Each of these cells can measure the strength of the pilot signal, and the radio access network (e.g., one or more of base stations 210 and 214 / 216 and / or a central node within the core network) can determine the serving cell for UE 224. As UE 224 moves within RAN 200, RAN 200 can continue to monitor the uplink pilot signal transmitted by UE 224. When the signal strength or quality of the pilot signal measured by a neighboring cell exceeds the signal strength or quality measured by the serving cell, RAN 200 can, with or without notification to UE 224, switch UE 224 from the serving cell to that neighboring cell.

[0064] Although the synchronization signal transmitted by base stations 210, 212, and 214 / 216 can be uniform, it may not identify a specific cell, but rather a zoning that includes multiple cells operating on the same frequency and / or having the same timing. Using zoning in 5G networks or other next-generation communication networks enables uplink-based mobility frameworks and improves the efficiency of both the UE and the network because the number of mobility messages that need to be exchanged between the UE and the network can be reduced.

[0065] In various implementations, the air interface in the radio access network 200 may utilize licensed spectrum, unlicensed spectrum, or shared spectrum. Licensed spectrum typically provides exclusive use of a portion of the spectrum by a mobile network operator purchasing a license from a government regulatory agency. Unlicensed spectrum provides shared use of a portion of the spectrum without a government-granted license. While some technical rules generally still need to be followed to access unlicensed spectrum, access can be obtained by any operator or device. Shared spectrum may fall between licensed and unlicensed spectrum, where technical rules or restrictions may be required to access the spectrum, but the spectrum may still be shared by multiple operators and / or multiple RATs. For example, a licensee of a portion of licensed spectrum may provide Licensed Shared Access (LSA) to share that spectrum with other parties, for example, by utilizing conditions determined by the appropriate licensee.

[0066] Devices communicating in the radio access network 200 can utilize one or more multiplexing techniques and multiple access algorithms to achieve simultaneous communication between the devices. For example, the 5G NR specification utilizes Orthogonal Frequency Division Multiplexing (OFDM) with a cyclic prefix (CP) to provide multiple access for UL transmissions from UEs 222 and 224 to base station 210, and to provide multiplexing for DL ​​transmissions from base station 210 to one or more UEs 222 and 224. Additionally, for UL transmissions, the 5G NR specification provides support for Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) with CP (also known as Single-Carrier FDMA (SC-FDMA)). However, within the scope of this disclosure, multiplexing and multiple access are not limited to the above schemes and can be provided using Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Sparse Code Multiple Access (SCMA), Resource Extended Multiple Access (RSMA), or other suitable multiple access schemes. In addition, multiplexing of DL transmissions from base station 210 to UEs 222 and 224 can be provided using time division multiplexing (TDM), code division multiplexing (CDM), frequency division multiplexing (FDM), orthogonal frequency division multiplexing (OFDM), sparse code multiplexing (SCM) or other suitable multiplexing schemes.

[0067] Devices in the radio access network 200 can also utilize one or more duplex algorithms. Duplex refers to a point-to-point communication link where both endpoints can communicate with each other in both directions. Full-duplex means that both endpoints can communicate with each other simultaneously. Half-duplex means that only one endpoint can send information to the other endpoint at a time. Half-duplex simulation is typically implemented for wireless links using Time Division Duplex (TDD). In TDD, transmissions in different directions on a given channel are separated using time division multiplexing. That is, in some scenarios, the channel is dedicated to transmission in one direction, while at other times, the channel is dedicated to transmission in the other direction, where the direction can change very rapidly, for example, several times per time slot. In wireless links, full-duplex channels generally rely on physical isolation between the transmitter and receiver, and appropriate interference cancellation techniques. Full-duplex simulation is typically implemented for wireless links using Frequency Division Duplex (FDD) or Space Division Duplex (SDD). In FDD, transmissions in different directions can operate at different carrier frequencies (e.g., within paired spectrum). In SDD, transmissions in different directions on a given channel are separated from each other using spatial division multiplexing (SDM). In other examples, full-duplex communication can be implemented within unpaired spectrum (e.g., within a single carrier bandwidth), where transmissions in different directions occur within different subbands of the carrier bandwidth. This type of full-duplex communication may be referred to herein as Subband Full-Duplex (SBFD), also known as flexible duplex.

[0068] Reference Figure 3 The OFDM waveforms illustrated herein are used to describe various aspects of this disclosure. Those skilled in the art will understand that various aspects of this disclosure can be applied to SC-FDMA waveforms in substantially the same manner as described below. That is, while some examples of this disclosure may focus on OFDM links for clarity, it should be understood that the same principles can also be applied to SC-FDMA waveforms.

[0069] Now refer to Figure 3 An expanded view of exemplary subframe 302 is illustrated, showing the OFDM resource grid. However, as those skilled in the art will readily appreciate, the physical (PHY) layer transport architecture for any particular application can vary from the example described herein depending on any number of factors. Here, time is in the horizontal direction in units of OFDM symbols; while frequency is in the vertical direction in units of the carrier's subcarriers.

[0070] Resource grid 304 can be used to schematically represent time-frequency resources for a given antenna port. That is, in a multiple-input multiple-output (MIMO) implementation with multiple antenna ports available, there can be corresponding multiple resource grids 304 available for communication. Resource grid 304 is divided into multiple resource elements (REs) 306. An RE (which is 1 subcarrier × 1 symbol) is the smallest discrete part of the time-frequency grid and contains a single complex value representing data from a physical channel or signal. Depending on the modulation used in a particular implementation, each RE may represent one or more information bits. In some examples, an RE block may be referred to as a physical resource block (PRB) or more simply as a resource block (RB) 308, which contains any suitable number of coherent subcarriers in the frequency domain. In one example, an RB may include 12 subcarriers, the number of which is independent of the parameter design used. In some examples, depending on the parameter design, an RB may include any suitable number of coherent OFDM symbols in the time domain. Within this disclosure, it is assumed that a single RB (such as RB 308) corresponds exactly to a single communication direction (transmission or reception for a given device).

[0071] A set of contiguous or discontinuous resource blocks may be referred to herein as a resource block group (RBG), subband, or bandwidth portion (BWP). A set of subbands or BWPs can span the entire bandwidth. Scheduling of a scheduled entity (e.g., a UE) for downlink, uplink, or sidelink transmissions typically involves scheduling one or more resource elements 306 within one or more subbands or bandwidth portions (BWPs). Thus, the UE generally utilizes only a subset of the resource grid 304. In some examples, an RB may be the smallest unit of resource that can be allocated to the UE. Therefore, the more RBs scheduled for the UE and the higher the modulation scheme selected for the air interface, the higher the UE's data rate. RBs can be scheduled by base stations (e.g., gNB, eNB, etc.) or can be self-scheduled by the UE implementing D2D sidelink communication.

[0072] In this explanation, RB 308 is shown to occupy less than the entire bandwidth of subframe 302, where some subcarriers above and below RB 308 are explained. In a given implementation, subframe 302 may have bandwidth corresponding to any number of one or more RB 308s. Furthermore, in this explanation, RB 308 is shown to occupy less than the entire duration of subframe 302, but this is merely one possible example.

[0073] Each 1ms subframe 302 may include one or more adjacent time slots. As an illustrative example, in... Figure 3In the example shown, a subframe 302 includes four time slots 310. In some examples, time slots may be defined based on a specified number of OFDM symbols with a given cyclic prefix (CP) length. For example, a time slot may include 7 or 14 OFDM symbols with a nominal CP. Additional examples may include mini-time slots with shorter durations (e.g., one or two OFDM symbols). In some cases, these mini-time slots, or shortened transmission time intervals (TTIs), may occupy resources scheduled for ongoing time slot transmissions for the same or different UEs. Any number of resource blocks may be utilized within a subframe or time slot.

[0074] An expanded view of time slot 310 illustrates time slot 310 including control region 312 and data region 314. Generally, control region 312 may carry control channels, while data region 314 may carry data channels. Of course, a time slot may contain all DL, all UL, or at least one DL portion and at least one UL portion. Figure 3 The structure described herein is merely exemplary in nature and may utilize different time-slot structures, and may include one or more for each of the control region and data region.

[0075] Although not in Figure 3 The explanation is as follows: However, each RE 306 within RB 308 can be scheduled to carry one or more physical channels, including control channels, shared channels, data channels, etc. Other REs 306 within RB 308 can also carry pilot or reference signals. These pilot or reference signals can be used by the receiver equipment to perform channel estimation for the corresponding channels, which enables coherent demodulation / detection of the control and / or data channels within RB 308.

[0076] In some examples, time slot 310 can be used for broadcast, multicast, groupcast, or unicast communications. For example, broadcast, multicast, or groupcast communications can refer to point-to-multipoint transmissions from one device (e.g., a base station, UE, or other similar device) to other devices. Here, broadcast communications are delivered to all devices, while multicast or groupcast communications are delivered to multiple target receiving devices. Unicast communications can refer to point-to-point transmissions from one device to a single other device.

[0077] In an example of cellular communication over a cellular carrier via the Uu interface, for DL ​​transmission, a scheduling entity (e.g., a base station) may allocate one or more REs 306 (e.g., within control area 312) to carry DL control information to one or more scheduled entities (e.g., UEs), including one or more DL control channels (such as the Physical Downlink Control Channel (PDCCH)). The PDCCH carries downlink control information (DCI), including but not limited to power control commands for DL ​​and UL transmissions (e.g., one or more open-loop power control parameters and / or one or more closed-loop power control parameters), scheduling information, grants, and / or RE assignments. The PDCCH may further carry Hybrid Automatic Repeat Request (HARQ) feedback transmissions, such as acknowledgment (ACK) or negative acknowledgment (NACK). HARQ is a technique well known to those skilled in the art, where, for accuracy, any suitable integrity verification mechanism (such as a checksum or cyclic redundancy check (CRC)) may be used to verify the integrity of packet transmissions at the receiving side. If the integrity of the transmission is acknowledged, an ACK may be transmitted, and if it is not acknowledged, a NACK may be transmitted. In response to NACK, the transmitting device can send a HARQ retransmission, which enables catch-up retransmission, incremental redundancy, and so on.

[0078] The base station may further allocate one or more REs 306 (e.g., in control area 312 or data area 314) to carry other DL signals, such as demodulation reference signals (DMRS); phase tracking reference signals (PT-RS); channel state information (CSI) reference signals (CSI-RS); and synchronization signal blocks (SSBs). SSBs may be broadcast at regular intervals based on periodicity (e.g., 5, 10, 20, 40, 80, or 160 milliseconds). SSBs include the primary synchronization signal (PSS), secondary synchronization signal (SSS), and physical broadcast control channel (PBCH). The UE may utilize the PSS and SSS to achieve radio frame, subframe, time slot, and symbol synchronization in the time domain, identify the center of the channel (system) bandwidth in the frequency domain, and identify the physical cell identity (PCI) of the cell.

[0079] The PBCH in the SSB may further include: a Master Information Block (MIB), which includes various system information and parameters for decoding the System Information Block (SIB). The SIB may be, for example, System Information Type 1 (SIB1), which may include various additional system information. Together, the MIB and SIB1 provide the minimum system information (SI) for initial access. Examples of system information transmitted in the MIB may include, but are not limited to: subcarrier spacing (e.g., default downlink parameter design), system frame number, configuration of the PDCCH control resource set (CORESET) (e.g., PDCCH CORESET0), cell prohibition indicator, cell reselection indicator, raster offset, and search space for SIB1. Examples of residual minimum system information (RMSI) transmitted in SIB1 may include, but are not limited to, random access search space, paging search space, downlink configuration information, and uplink configuration information. The base station may also transmit other system information (OSI).

[0080] In UL transmissions, the scheduled entity (e.g., the UE) may use one or more RE 306s to carry UL control information (UCI) to the scheduling entity. This UL control information includes one or more UL control channels, such as the Physical Uplink Control Channel (PUCCH). The UCI may include various packet types and categories, including pilots, reference signals, and information configured to enable or assist in decoding uplink data transmissions. Examples of uplink reference signals may include probe reference signals (SRS) and uplink DMRS. In some examples, the UCI may include a scheduling request (SR), i.e., a request for the scheduling entity to schedule uplink transmissions. Here, in response to an SR transmitted on the UCI, the scheduling entity may transmit downlink control information (DCI), which can schedule resources for uplink packet transmissions. The UCI may also include HARQ feedback, channel state feedback (CSF) (such as CSI reports), or any other suitable UCI.

[0081] In addition to control information, one or more REs 306 (e.g., within data area 314) may also be allocated for data traffic. Such data traffic may be carried on one or more traffic channels, such as the Physical Downlink Shared Channel (PDSCH) for DL ​​transmissions, or the Physical Uplink Shared Channel (PUSCH) for UL transmissions. In some examples, one or more REs 306 within data area 314 may be configured to carry other signals, such as one or more SIBs and DMRS. In some examples, the PDSCH may carry multiple SIBs, not limited to SIB1 discussed above. For example, OSI may be provided in these SIBs (e.g., SIB2 and above).

[0082] In an example of sidelink communication on a sidelink carrier via the Proximity Service (ProSe) PC5 interface, the control area 312 of time slot 310 may include a Physical Sidelink Control Channel (PSCCH) comprising sidelink control information (SCI) transmitted by an initiating (transmitting) sidelink device (e.g., a Tx V2X device or other Tx UE) to a set of one or more other receiving sidelink devices (e.g., Rx V2X devices or other Rx UEs). The data area 314 of time slot 310 may include a Physical Sidelink Shared Channel (PSSCH) comprising sidelink data traffic transmitted by the initiating (transmitting) sidelink device within resources reserved on the sidelink carrier by the transmitting sidelink device via the SCI. Further information may be transmitted on the respective REs 306 within time slot 310. For example, HARQ feedback information may be transmitted from the receiving sidelink device to the transmitting sidelink device in the Physical Sidelink Feedback Channel (PSFCH) within time slot 310. In addition, one or more reference signals, such as sidelink SSB, sidelink CSI-RS, sidelink SRS and / or sidelink positioning reference signal (PRS), can be transmitted in time slot 310.

[0083] These physical channels are typically multiplexed and mapped to transport channels for processing by the Media Access Control (MAC) layer. The transport channel carries blocks of information, called transport blocks (TBs). The transport block size (TBS) (which may correspond to the number of information bits) can be a controlled parameter based on the modulation and coding scheme (MCS) and the number of redundancies (RBs) in a given transmission.

[0084] Figure 3 The channels or carriers described are not necessarily all the channels or carriers available between devices, and those skilled in the art will recognize that other channels or carriers, such as other traffic, control, and feedback channels, may be available in addition to those described.

[0085] The UE can transmit a probe reference signal (SRS), which the base station can use for various purposes, including channel estimation, localization, codebook generation, and beam selection. For example, the UE can transmit an SRS to the base station over a specified bandwidth so that the base station can estimate the uplink channel over that bandwidth. In this way, the base station can better schedule uplink transmissions from the UE (e.g., the base station can select the frequency band and transmission parameters that the UE will use for uplink transmissions).

[0086] The base station can transmit SRS configuration information to the UE, specifying the SRS resources and other parameters used by the UE to transmit SRS. The base station can configure one or more SRS resource sets for the UE. In some examples, the UE can use different resource sets to transmit on different symbols. A defined number of antenna ports can be used for each SRS resource. In some examples, a given antenna port may correspond to a specific set of antenna elements and / or other beamforming parameters (e.g., signal phase and / or amplitude).

[0087] In some examples, SRS transmission can be broadband transmission. For example, such as... Figure 4 As shown in resource allocation 400, SRS 402 can be transmitted over the entire allocated SRS bandwidth (e.g., Figure 4 (48 RBs in the example). Figure 4 In this diagram, the x-axis represents frequency (e.g., RB as shown) and the y-axis represents time (e.g., symbol, time slot, etc.).

[0088] In some examples, SRS transmission can be subband transmission, where SRS is transmitted over one or more subbands with allocated SRS bandwidth. For example, a UE can use frequency hopping to transmit SRS over different subbands. The base station can configure a frequency hopping scheme for each SRS resource set of the UE. For frequency hopping, SRS bandwidth can refer to the total bandwidth that will be used for frequency hopping across all frequencies (e.g., within a time slot, a set of time slots, a set of symbols, or some other time span).

[0089] Figure 5 An example of frequency hopping mode 500 is explained, in which a first frequency hopping sequence 502 for a first UE (UE 1) and a second frequency hopping sequence 504 for a second UE (UE 2) are defined. For example, the first frequency hopping in the first frequency hopping sequence 502 is indicated by a first group of RBs 506, the second frequency hopping in the first frequency hopping sequence 502 is indicated by a second group of RBs 508, and so on. Figure 5 In this diagram, the x-axis represents frequency (e.g., RB) and the y-axis represents time (e.g., symbol, time slot, etc.).

[0090] The base station can send SRS configuration to the UE, specifying, for example, the SRS bandwidth and SRS frequency hopping bandwidth to be used by the UE for each configured SRS resource set. For example, a set of bandwidth configurations (C) can be defined. SRS ), which targets C SRS Different values ​​specify different SRS frequency hopping bandwidth values ​​for different RB groups (e.g., 4 RBs per hop, 8 RBs per hop, etc.). Therefore, the base station can send SRS bandwidth configuration to the UE (e.g., a specific C...). SRS (Value) to configure SRS transmissions performed by the UE.

[0091] This disclosure relates in some aspects to an SRS time-domain bundle that enables a receiver (e.g., at a base station) to jointly process SRS transmitted in multiple SRS times. Figure 6 An example resource allocation 600 for multiple SRS timings (e.g., including a first SRS timing 602) is described. A given SRS timing may occupy one or more time slots (time slots may be referred to as time slots herein). Moreover, SRS timings may be temporally separated by one or more time slots 604. In some examples, an SRS timing is a set of time-frequency resources allocated for the transmission of SRS. Different SRS timings are separated in the time domain. Figure 4 The time-frequency resources used for SRS 402 are an example of SRS timing. Figure 5 The time-frequency resources used for the first frequency hopping sequence 502 are another example of SRS timing. Other examples are possible.

[0092] When a UE operates at the cell edge or otherwise experiences relatively poor channel conditions, the base station may have difficulty accurately estimating the SRS transmitted by the UE. However, the base station may be able to generate a better estimate of the SRS by combining SRS information from multiple SRS moments. For example, as... Figure 6 As shown, SRS transmissions at four SRS times can be bundled to generate an SRS estimate.

[0093] In different examples, the base station can combine SRS transmissions from different SRS timings in different ways. In some examples, the base station can combine the waveforms of different SRS transmissions and generate an SRS estimate based on the combined waveforms. In some examples, the waveform combination can be a weighted combination (e.g., the waveform of one SRS timing can be weighted differently than the waveform of another SRS timing). In some examples, the base station can generate a corresponding SRS estimate for each SRS transmission from different SRS timings and then combine these SRS estimates. In some examples, the combination of SRS estimates can be a weighted combination (e.g., the SRS estimate for one SRS timing can be weighted differently than the SRS estimate for another SRS timing).

[0094] In light of the above, SRS bundles can be used to provide SRS coverage and capacity enhancement. For example, by leveraging the relationship between two or more timings of one or more SRS resources in one or more time slots, joint processing within the time domain can be achieved.

[0095] If there is a phase discontinuity among the SRS transmissions at an SRS timing (e.g., exceeding a phase discontinuity threshold), the combination of SRS transmissions at the base station may be destructive rather than constructive. To facilitate the combination (joint processing) of SRS transmissions at the base station across multiple SRS timings, the transmitter (e.g., at the UE) can be configured to maintain phase coherence / continuity of SRS transmissions across SRS timings.

[0096] Phase discontinuities can be caused by a variety of factors. For example, phase continuity can occur if there are non-contiguous time resource allocations for SRS transmissions at different SRS times (e.g., due to time gaps between SRS times). As another example, different frequency resource allocations (e.g., different frequency hopping resource allocations or modes) for SRS transmissions at different SRS times can lead to phase discontinuities. Moreover, using different transmit powers for SRS transmissions at different SRS times can cause phase variations at the power amplifier. For example, the UE may operate a power control loop to control the transmit power of the power amplifier. Different power control loops can cause different phases in the corresponding output waveforms of the power amplifier, resulting in phase discontinuities. Additionally, inaccuracies in determining the correct timing advance value can lead to phase discontinuities. Furthermore, using different transmit beams and / or precoders for SRS transmissions at different SRS times can lead to phase continuity (e.g., because different beams have different power control loops, thus affecting the phase of the power amplifier).

[0097] In some examples, the base station can help the UE maintain phase continuity between SRS transmissions at different SRS times by configuring SRS transmissions for different SRS times using the same parameters. Table 1 illustrates examples of SRS resource allocation.

[0098] In the SRS resource allocation shown in Table 1, parameters that may affect the phase coherence / discontinuity between SRS transmissions at different SRS times may include: the number of SRS ports used for transmission (nrofSRS-Ports), the transmission comb used for transmission, the frequency domain position of the SRS (freqDomainPosition), the frequency domain shift of the SRS (freqDomainShift), the frequency hopping of the SRS (freqHopping), and the spatial relation information of the SRS (spatialRelationInfo). These parameters are highlighted in bold in Table 1.

[0099]

[0100]

[0101] Table 1

[0102] The SRS port count (nrofSRS-Ports) parameter specifies the number of ports to be used for SRS transmissions. If different SRS port counts (nrofSRS-Ports) are used for SRS transmissions at different SRS times, phase discontinuities may occur due to the power amplifier operating at different operating points (e.g., the phase of the power amplifier may differ when transmitting on one port compared to when transmitting on one of the two ports). As described above, different operating points of the power amplifier can be associated with different phases of the amplified waveform. Therefore, phase discontinuities between SRS transmissions can be mitigated by configuring SRS transmissions at different SRS times to use the same number of SRS ports.

[0103] The transmission comb parameter specifies the SRS density in the frequency domain. For example, a transmission comb value of 2 indicates that SRS is transmitted every two REs, while a transmission comb value of 4 indicates that SRS is transmitted every four REs. Using different SRS densities in the frequency domain for SRS transmissions at different SRS times can lead to phase discontinuities between SRS transmissions. Therefore, this phase discontinuity can be mitigated by configuring SRS transmissions at different SRS times to use the same transmission comb.

[0104] The `freqDomainPosition` parameter specifies the starting position of the SRS in the frequency domain. Using different frequency domain positions for SRS transmissions at different SRS times can lead to phase discontinuities between the transmissions. Therefore, configuring SRS transmissions at different SRS times to use the same frequency domain position can mitigate this phase discontinuity.

[0105] The `freqDomainShift` parameter specifies the frequency domain shift applied to the SRS waveform. Using different frequency domain shifts for SRS transmissions at different SRS times can lead to phase discontinuities between SRS transmissions. Therefore, this phase discontinuity can be mitigated by configuring SRS transmissions at different SRS times to use the same frequency domain shift.

[0106] The freqHopping information specifies the SRS hopping parameters (e.g., SRS bandwidth (b-SRS), SRS hopping bandwidth (b-hop), etc.). Using different hopping frequencies for SRS transmissions at different SRS times can lead to phase discontinuities between SRS transmissions. Therefore, configuring SRS transmissions at different SRS times to use the same hopping frequency can mitigate this phase discontinuity.

[0107] Spatial Relation Information (SRI) is used to select the UL beam for SRS transmission. In some aspects, SRI can specify the filters to be applied to generate the SR SUL beam with the desired direction and beamwidth. Using different beams for SRS transmissions at different SRS times can lead to phase discontinuities between the transmissions (e.g., because different beams can use different power control loops). Therefore, this phase discontinuity can be mitigated by configuring SRS transmissions at different SRS times to use the same SRI.

[0108] Table 2 illustrates an example of the SRS spatial information in Table 1.

[0109]

[0110] Table 2

[0111] In some examples, the spatial relationships used for SRS transmission can be configured based on a reference signal (RS) (referred to as the reference RS). For example, a set of spatial relationship information can be defined for the reference RS. Therefore, spatial relationship information for SRS transmission can be selected from this set of spatial relationship information defined for the reference RS. As shown in Table 2, in some examples, the reference RS can be an SSB, CSI-RS, or SRS.

[0112] In some examples, an uplink (UL) transmission configuration indicator (TCI) can be used instead of UL spatial relationship information. For example, a base station can configure a UE with a set of TCI states (e.g., via Radio Resource Control (RRC) messages). The base station can then specify a particular TCI state for SRS transmission (e.g., via DCI). A given UL TCI state can specify various information. The UL TCI state can specify parameters used to configure the quasi-coexistence (QCL) relationship between the RSs. For example, the QCL can specify the BWP identifier, reference signal identifier, and QCL type.

[0113] In some examples, to achieve SRS time-domain bundled transmission, the UE is expected to be configured with SRS transmissions at multiple times that satisfy one or more conditions. These conditions may involve SRS transmissions at multiple times having one or more of the following: the same spatial relation information (e.g., SpatialRelationInfo) or the same UL TCI, the same transmission comb (e.g., transmissionComb), the same number of SRS ports (e.g., nrofSRS-Ports), the same frequency domain location in the same active BWP, the same frequency hopping parameters, the same transmit power, or a combination thereof.

[0114] In some examples, if the conditions for SRS transmission are not met at the UE, the UE should not continue to maintain phase coherence. In this case, phase coherence can be maintained until the indication changes, but it will not be maintained once the configuration that does not meet the conditions is received. For example, if there are four SRS events S0, S1, S2, and S3, and the SRS configuration is enabled in S0, S1, and S2 but not in S3, the UE will not maintain phase continuity of SRS transmission from S2 to S3 (as an example).

[0115] In some examples, if the conditions for SRS transmission are not met at the UE, the UE should ignore the change and continue using the settings prior to the indicated change to maintain phase coherence. In this case, the UE can treat the configuration change as an error and ignore it. For example, if there are four SRS events S0, S1, S2, and S3, and the SRS configuration is enabled in S0, S1, and S2 but not in S3 for phase continuity of SRS transmission, the UE will continue to maintain phase continuity of SRS transmission from S2 to S3 by ignoring the parameters configured for S3 (space, power, frequency hopping, or transmission port) (as an example).

[0116] Figure 7 This is signaling diagram 700 illustrating an example of SRS-related signaling in a wireless communication system including base station (BS) 702 and UE 704. In some examples, BS 702 may correspond to... Figure 1 , 2 And any of the base stations or scheduling entities shown in any of 12. In some examples, UE 704 may correspond to Figure 1 , 2 The UE or any of the scheduled entities shown in any of 8.

[0117] exist Figure 7UE 706 sends its capability information to BS 702. This capability information may indicate, for example, that UE 704 supports SRS time-domain bundled clustering.

[0118] Based on this capability information, BS 702 can determine whether to perform time-domain clustering when scheduling UE 704 to transmit SRS. For example, if UE 704 is near the cell edge of BS 702, BS 702 can choose to use time-domain clustering to improve SRS coverage for UE 704.

[0119] In sections 708-712, BS 702 can allocate resources for SRS transmissions on multiple SRS times and generate SRS configurations for each SRS transmission. As discussed herein, BS 702 can generate SRS configurations such that the same parameters (e.g., spatial relation information, etc.) are defined for different SRS transmissions on different SRS times. BS 702 then transmits the SRS resource allocation information and SRS configuration to UE 704. In some examples, this information for different SRS times may be transmitted via different messages, or in other examples via the same message. BS 702 may transmit the SRS resource allocation information and SRS configuration information to UE 704 via DCI or some other type of signaling.

[0120] At 714, the BS 702 sends an instruction to the UE 704 specifying that the UE 704 should maintain phase continuity for SRS transmissions across different SRS timings. The BS 702 may send this instruction to the UE 704 via DCI (e.g., a DCI that schedules SRS timings) or some other type of signaling.

[0121] At 716, UE 704 verifies that the SRS configuration received from BS 702 specifies the same parameters (e.g., spatial relation information, etc.) for SRS transmissions on different SRS timings. In this way, if applicable, when UE 704 transmits SRS transmissions on SRS timings at 720-724, the UE can maintain phase continuity across SRS transmissions on different SRS timings (at 718). In some examples, UE 704 may attempt to maintain a constant transmit power across SRS transmissions on scheduled SRS timings to maintain phase continuity.

[0122] At 726, BS 702 can jointly process SRS transmissions sent at 720-724. For example, BS 702 can combine SRS transmissions to estimate the SRS transmitted by UE 704.

[0123] Figure 8This is a block diagram illustrating an example of the hardware implementation of a UE 800 using a processing system 814. For example, the UE 800 could be a device configured to communicate wirelessly with a base station, as in... Figures 1-7 As discussed in any one or more of them. In some implementations, UE 800 may correspond to Figure 1 , 2 The UE or any of the scheduled entities shown in either of the above 7.

[0124] According to various aspects of this disclosure, elements, any part of elements, or any combination of elements may be implemented using processing system 814. Processing system 814 may include one or more processors 804. Examples of processors 804 include microprocessors, microcontrollers, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. In various examples, UE 800 may be configured to perform any or more of the functions described herein. That is, processor 800, as utilized in UE 804, may be used to implement any or more of the processes and procedures described herein.

[0125] In some instances, processor 804 may be implemented via a baseband or modem chip, while in other implementations, processor 804 itself may include several devices that are different from and distinct from the baseband or modem chip (e.g., those that can work together to achieve the examples discussed herein). Furthermore, as mentioned above, various hardware arrangements and components beyond the baseband modem processor can be used in the implementation, including RF chains, power amplifiers, modulators, buffers, interleavers, adders / summers, etc.

[0126] In this example, the processing system 814 can be implemented using a bus architecture generally represented by bus 802. Depending on the specific application and overall design constraints of the processing system 814, bus 802 may include any number of interconnect buses and bridges. Bus 802 communicatively couples together various circuits including one or more processors (generally represented by processor 804), memory 805, and computer-readable media (generally represented by computer-readable media 806). Bus 802 may also link various other circuits, such as timing sources, peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further. Bus interface 808 provides an interface between bus 802 and transceiver 810, and between bus 802 and interface 830. Transceiver 810 provides a communication interface or means for communicating with various other devices over a wireless transmission medium. In some examples, the UE may include two or more transceivers 810, each configured to communicate with a corresponding network type. Interface 830 provides a communication interface or means for communicating with various other devices and equipment (e.g., other devices housed within the same device as the UE or other external devices) over an internal bus or external transmission medium (such as an Ethernet cable). Depending on the characteristics of the equipment, interface 830 may include a user interface (e.g., a keypad, display, speaker, microphone, joystick). Of course, such a user interface is optional and may be omitted in some examples (such as IoT devices).

[0127] Processor 804 is responsible for managing bus 802 and general processing, including the execution of software stored on computer-readable medium 806. When executed by processor 804, the software causes processing system 814 to perform various functions described below for any particular device. Computer-readable medium 806 and memory 805 may also be used to store data manipulated by processor 804 during software execution. For example, memory 805 may include SRS information 815 that can be used by processor 804 for SRS operations as discussed herein.

[0128] One or more processors 804 in the processing system can execute 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, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. Software may reside on a computer-readable medium 806.

[0129] Computer-readable medium 806 may be a non-transient computer-readable medium. As examples, non-transient computer-readable media include magnetic storage devices (e.g., hard disks, floppy disks, magnetic tapes), optical disks (e.g., compact discs (CDs) or digital multi-purpose discs (DVDs)), smart cards, flash memory devices (e.g., cards, sticks, or key-type drives), random access memory (RAM), read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), registers, removable disks, and any other suitable medium for storing software and / or instructions accessible and readable by a computer. Computer-readable medium 806 may reside in processing system 814, be external to processing system 814, or be distributed across multiple entities including processing system 814. Computer-readable medium 806 may be implemented in a computer program product. As an example, a computer program product may include a computer-readable medium within encapsulation material. Those skilled in the art will recognize how the functionality described throughout this disclosure is best implemented depending on the specific application and the overall design constraints imposed on the system as a whole.

[0130] UE 800 can be configured to perform any one or more of the operations described herein (e.g., as combined above). Figures 1-7 The description and the following text in combination Figures 9-11 (As described). In some aspects of this disclosure, such as the processor 804 utilized in UE 800, circuitry may be configured for various functions.

[0131] Processor 804 may include communication and processing circuitry system 841. Communication and processing circuitry system 841 may be configured to communicate with a base station (such as a gNB). Communication and processing circuitry system 841 may include one or more hardware components providing a physical structure for performing various processes related to wireless communication (e.g., signal reception and / or signal transmission) as described herein. Communication and processing circuitry system 841 may further include one or more hardware components providing a physical structure for performing various processes related to signal processing (e.g., processing received signals and / or processing signals for transmission) as described herein. In some examples, communication and processing circuitry system 841 may include two or more transmit / receive chains, each configured to process signals of different RAT (or RAN) types. Communication and processing circuitry system 841 may further be configured to execute communication and processing software 851 included on computer-readable medium 806 to implement one or more functions described herein.

[0132] In some examples, the communication and processing circuitry 841 may be configured to receive and process downlink beamforming signals at millimeter-wave frequencies or sub-6 GHz frequencies via transceiver 810 and antenna array 820. For example, the communication and processing circuitry 841 may be configured to receive corresponding reference signals (e.g., SSB or CSI-RS) from a base station on each of a plurality of downlink beams via at least one first antenna panel of antenna array 820 during downlink beam sweep. The communication and processing circuitry 841 may be further configured to transmit beam measurement reports to the base station.

[0133] In some examples, the communication and processing circuitry system 841 may be further configured to generate and transmit uplink beamforming signals at millimeter-wave frequencies or sub-6 GHz frequencies via transceiver 810 and antenna array 820. For example, the communication and processing circuitry system 841 may be configured to transmit corresponding reference signals (e.g., SRS or DMRS) to the base station via at least one second antenna panel of antenna array 820 on each of a plurality of uplink beams during uplink beam sweep.

[0134] The communication and processing circuitry system 841 may be further configured to generate a message and transmit it to the base station. For example, the message may be included in a MAC-CE carried in the PUSCH, a UCI in the PUCCH, a random access message, or an RRC message. The communication and processing circuitry system 841 may be further configured to generate a scheduling request and transmit it (e.g., via a UCI in the PUCCH) to the base station to receive uplink permission for the PUSCH.

[0135] The communication and processing circuitry system 841 may be further configured to generate an uplink signal and transmit the uplink signal on one or more uplink transmit beams applied to the uplink signal. The uplink signal may include, for example, PUCCH, PUSCH, SRS, DMRS, or Physical Random Access Channel (PRACH).

[0136] The communication and processing circuitry system 841 may be further configured to control the antenna array 820 and transceiver 810 to search for and identify multiple downlink transmit beams during downlink beam sweep. The communication and processing circuitry system 841 may be further configured to obtain multiple beam measurements on each of the multiple downlink receive beams via the antenna array 820 for each of the identified downlink transmit beams. The communication and processing circuitry system 841 may be further configured to generate a beam measurement report for transmission to a base station.

[0137] The communication and processing circuitry system 841 may be further configured to identify one or more selected uplink beams based on beam measurements obtained from a downlink beam reference signal. In some examples, the communication and processing circuitry system 841 may be configured to, for each of the serving downlink transmit beams, compare the corresponding RSRP (or other beam measurement) measured on each of the downlink receive beams to identify that serving downlink receive beam, and further use that serving downlink receive beam as the selected uplink transmit beam. Each serving downlink receive beam may have the highest measured RSRP (or other beam measurement) for one of the downlink transmit beams.

[0138] The communication and processing circuitry system 841 can be configured to generate one or more uplink transmit beams for transmission in an uplink beam sweep. Each uplink transmit beam may carry an uplink reference signal (e.g., SRS) for measurement by the base station. The communication and processing circuitry system 841 can be further configured to identify selected uplink transmit beams(s) chosen by the base station based on uplink beam measurements. For example, the communication and processing circuitry system 841 can be configured to receive indications of the selected uplink transmit beams(s) from the base station.

[0139] In some implementations of communication involving the reception of information, communication and processing circuitry system 841 may obtain information from components of UE 800 (e.g., from transceiver 810 that receives information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium), process (e.g., decode) the information, and output the processed information. For example, communication and processing circuitry system 841 may output information to another component of processor 804, to memory 805, or to bus interface 808. In some examples, communication and processing circuitry system 841 may receive one or more of signals, messages, other information, or any combination thereof. In some examples, communication and processing circuitry system 841 may receive information via one or more channels. In some examples, communication and processing circuitry system 841 may include the functionality of means for receiving. In some examples, communication and processing circuitry system 841 may include the functionality of means for decoding.

[0140] In some implementations where communication involves sending (e.g., transmitting) information, the communication and processing circuitry system 841 may obtain information from (e.g., from another component of processor 804, memory 805, or bus interface 808), process (e.g., encode) the information, and output the processed information. For example, the communication and processing circuitry system 841 may output information to transceiver 810 (e.g., to transmit information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium). In some examples, the communication and processing circuitry system 841 may send one or more of signals, messages, other information, or any combination thereof. In some examples, the communication and processing circuitry system 841 may transmit information via one or more channels. In some examples, the communication and processing circuitry system 841 may include the functionality of means for sending (e.g., means for transmitting). In some examples, the communication and processing circuitry system 841 may include the functionality of means for encoding.

[0141] Processor 804 may include SRS configuration circuitry 842, which is configured to perform SRS configuration-related operations as discussed herein (e.g., in conjunction with...). Figure 6 and 7 (One or more operations described herein). The SRS configuration circuit system 842 may be configured to execute the SRS configuration software 852 included on the computer-readable medium 806 to perform one or more functions described herein.

[0142] SRS configuration circuit system 842 may include functionality for receiving means (e.g., such as...) Figure 7 708, 710, 712 and / or 714, and / or Figure 9 Boxes 902, 904 and / or 906, and / or Figure 10 Boxes 1002, 1004 and / or 1006, and / or Figure 11 (As described in blocks 1102, 1104, and / or 1106). For example, the SRS configuration circuitry 842, together with the communication and processing circuitry 841 and the transceiver 810, can receive messages including resource allocation and configuration information on the PDCCH. As another example, the SRS configuration circuitry 842, together with the communication and processing circuitry 841 and the transceiver 810, can receive messages including indications on the PDSCH.

[0143] SRS configuration circuit system 842 may include the functionality of means for verification (e.g., such as...) Figure 7 716 and / or Figure 9 Box 908, and / or Figure 10 Box 1008, and / or Figure 11(As described in box 1108). For example, the SRS configuration circuitry 842 can verify whether the same parameters have been configured for the first SRS transmission and the second SRS transmission.

[0144] SRS configuration circuit system 842 may include functionality for determining the means (e.g., such as...) Figure 7 716 and / or Figure 11 (as described in box 1108). For example, the SRS configuration circuitry 842 can determine whether the same parameters have been configured for the first SRS transmission and the second SRS transmission.

[0145] Processor 804 may include SRS processing circuitry 843, which is configured to perform SRS processing-related operations as discussed herein (e.g., in conjunction with...). Figure 6 and 7 (One or more operations described herein). The SRS processing circuitry 843 may be configured to execute the SRS processing software 853 included on the computer-readable medium 806 to perform one or more functions described herein.

[0146] SRS processing circuit system 843 may include the functionality of means for generating SRS. For example, SRS processing circuit system 843 may use a sequence generation algorithm to generate SRS sequences.

[0147] SRS processing circuitry system 843 may include functionality for transmitting SRS (e.g., such as...). Figure 7 720, 722 and / or 724, and / or Figure 9 Box 908, and / or Figure 10 Box 1010, and / or Figure 11 (As described in box 1110). For example, the above combined Figure 8 The SRS processing circuitry 843 shown and described, together with the communication and processing circuitry 841 and the transceiver 810, can transmit SRS data on scheduled uplink resources.

[0148] Figure 9 This is a flowchart illustrating an example method 900 for wireless communication according to some aspects of this disclosure. As described below, some or all of the described features may be omitted in a particular implementation within the scope of this disclosure, and some described features may not be required to implement all examples. In some examples, method 900 may be... Figure 8 The method 900 is executed by the UE 800 described in the text. In some examples, method 900 may be executed by any suitable equipment or apparatus for implementing the functions or algorithms described below.

[0149] In block 902, the UE may receive a first resource allocation for scheduling a first SRS transmission for a first detection reference signal (SRS) timing and a first SRS configuration for the first SRS transmission. For example, the above combined Figure 8 The SRS configuration circuitry 843 shown and described, together with the communication and processing circuitry 842 and the transceiver 810, can provide means for receiving a first resource allocation for scheduling a first SRS transmission for a first probe reference signal (SRS) timing and a first SRS configuration for the first SRS transmission.

[0150] In some examples, the first SRS timing corresponds to at least one first time slot, and the second SRS timing corresponds to at least one second time slot that is different from at least one first time slot.

[0151] In block 904, the UE may receive a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission. For example, the SRS configuration circuitry 842, together with the communication and processing circuitry 841 and the transceiver 810, may provide means for receiving the second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission.

[0152] In some examples, receiving a first resource allocation and receiving a second resource allocation may include receiving at least one downlink control information (DCI) from a base station, wherein the at least one DCI specifies that the user equipment is to configure the first SRS for first SRS transmission during a first SRS timing and that the user equipment is to configure the second SRS for second SRS transmission during a second SRS timing.

[0153] In block 906, the UE can receive an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission. For example, the SRS configuration circuitry 842, together with the communication and processing circuitry 841 and the transceiver 810, can provide means for receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0154] In some examples, receiving the instruction may include receiving a Media Access Control-Control Element (MAC-CE) that includes the instruction.

[0155] In box 908, the UE can transmit the first SRS transmission during the first SRS timing and the second SRS transmission during the second SRS timing after verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission. For example, the above combined Figure 8The SRS processing circuitry system 843 shown and described, together with the communication and processing circuitry system 841 and the transceiver 810, can provide means for transmitting a first SRS transmission during a first SRS timing and for transmitting a second SRS transmission during a second SRS timing.

[0156] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining that using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission. In some examples, transmitting a first SRS transmission during a first SRS timing and transmitting a second SRS transmission during a second SRS timing may include transmitting the first SRS transmission according to the first SRS configuration and transmitting the second SRS transmission according to the second SRS configuration, thereby maintaining phase continuity across the first SRS transmission and the second SRS transmission. In some examples, maintaining phase continuity across the first SRS transmission and the second SRS transmission may include maintaining substantially the same phase continuity (e.g., power amplifier phase) across the first SRS transmission and the second SRS transmission.

[0157] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include: determining that using the first SRS configuration and the second SRS configuration will not maintain phase continuity across the first SRS transmission and the second SRS transmission. In some examples, transmitting a first SRS transmission during a first SRS timing and transmitting a second SRS transmission during a second SRS timing may include: transmitting the first SRS transmission according to the first SRS configuration and transmitting the second SRS transmission according to the second SRS configuration, and suppressing the maintenance of phase continuity across the first SRS transmission and the second SRS transmission. In some examples, transmitting a first SRS transmission during a first SRS timing and transmitting a second SRS transmission during a second SRS timing may include: transmitting the first SRS transmission and transmitting the second SRS transmission, thereby maintaining phase continuity across the first SRS transmission and the second SRS transmission.

[0158] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration and the second SRS configuration specify at least one of the following: the same spatial relationship information, the same uplink transmission configuration indicator state, the same transmission comb, the same number of SRS ports, the same frequency domain location in the same bandwidth portion, the same frequency hopping parameters, the same transmit power, or a combination thereof.

[0159] In some examples, a first SRS configuration specifies a first set of spatial relationship information, a second SRS configuration specifies a second set of spatial relationship information, and verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first set of spatial relationship information and the second set of spatial relationship information specify at least one of the following: the same serving cell identifier, the same synchronization signal block index, the same channel state information reference signal index, the same SRS resource identifier, the same uplink bandwidth portion, or a combination thereof.

[0160] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first uplink transmission configuration indicator state and the second SRS configuration specifies that first uplink transmission configuration indicator state.

[0161] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first number of ports and the second SRS configuration specifies that first number of ports.

[0162] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first transmission comb value and the second SRS configuration specifies that first transmission comb value.

[0163] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first frequency domain location and the second SRS configuration specifies that first frequency domain location.

[0164] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first frequency hopping configuration value and the second SRS configuration specifies that first frequency hopping configuration value.

[0165] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first SRS bandwidth and a first SRS frequency hopping bandwidth and the second SRS configuration specifies the first SRS bandwidth and the first SRS frequency hopping bandwidth.

[0166] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first transmit power configuration and the second SRS configuration specifies that first transmit power configuration.

[0167] In some examples, the UE may transmit capability information to the base station, wherein the capability information indicates that the user equipment supports maintaining phase continuity of SRS transmissions across different SRS times. In some examples, receiving the indication may include receiving the indication after transmitting the capability information.

[0168] Figure 10 This is a flowchart illustrating an example method 1000 for wireless communication according to some aspects of this disclosure. As described below, some or all of the described features may be omitted in a particular implementation within the scope of this disclosure, and some described features may not be required to implement all examples. In some examples, method 1000 may be... Figure 8 The method 1000 is executed by the UE 800 described in the text. In some examples, method 1000 may be executed by any suitable equipment or apparatus for implementing the functions or algorithms described below.

[0169] In block 1002, the UE may receive a first resource allocation for scheduling a first SRS transmission for a first detection reference signal (SRS) timing and a first SRS configuration for the first SRS transmission. For example, the above combined Figure 8 The SRS configuration circuitry 843 shown and described, together with the communication and processing circuitry 842 and the transceiver 810, can provide means for receiving a first resource allocation for scheduling a first SRS transmission for a first probe reference signal (SRS) timing and a first SRS configuration for the first SRS transmission.

[0170] In some examples, the first SRS timing corresponds to at least one first time slot, and the second SRS timing corresponds to at least one second time slot that is different from at least one first time slot.

[0171] In block 1004, the UE may receive a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission. For example, the SRS configuration circuitry 842, together with the communication and processing circuitry 841 and the transceiver 810, may provide means for receiving the second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission.

[0172] In some examples, in order to receive a first resource allocation and a second resource allocation, the UE may receive at least one downlink control information (DCI) from the base station, wherein the at least one DCI specifies that the user equipment shall configure the first SRS for first SRS transmission during a first SRS timing and that the user equipment shall configure the second SRS for second SRS transmission during a second SRS timing.

[0173] In block 1006, the UE may receive an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission. For example, the SRS configuration circuitry 842, together with the communication and processing circuitry 841 and the transceiver 810, may provide means for receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0174] In some examples, receiving the instruction may include receiving a Media Access Control-Control Element (MAC-CE) that includes the instruction.

[0175] In block 1008, the UE may, after receiving the instruction in block 1006, verify whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission. For example, the SRS configuration circuitry 842 may provide means for verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0176] In box 1010, the UE may, after verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission, transmit the first SRS transmission during the first SRS timing and transmit the second SRS transmission during the second SRS timing. For example, the above combined Figure 8 The SRS processing circuitry system 843 shown and described, together with the communication and processing circuitry system 841 and the transceiver 810, can provide means for transmitting a first SRS transmission during a first SRS timing and for transmitting a second SRS transmission during a second SRS timing.

[0177] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining that using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission. In some examples, transmitting a first SRS transmission during a first SRS timing and transmitting a second SRS transmission during a second SRS timing may include transmitting the first SRS transmission according to the first SRS configuration and transmitting the second SRS transmission according to the second SRS configuration, thereby maintaining phase continuity across the first SRS transmission and the second SRS transmission. In some examples, maintaining phase continuity across the first SRS transmission and the second SRS transmission may include maintaining substantially the same phase continuity (e.g., power amplifier phase) across the first SRS transmission and the second SRS transmission.

[0178] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include: determining that using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission. In some examples, transmitting a first SRS transmission during a first SRS timing and transmitting a second SRS transmission during a second SRS timing may include: transmitting the first SRS transmission according to the first SRS configuration and transmitting the second SRS transmission according to the second SRS configuration, and suppressing the maintenance of phase continuity across the first SRS transmission and the second SRS transmission. In some examples, transmitting a first SRS transmission during a first SRS timing and transmitting a second SRS transmission during a second SRS timing may include: transmitting the first SRS transmission and transmitting the second SRS transmission, thereby maintaining phase continuity across the first SRS transmission and the second SRS transmission.

[0179] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration and the second SRS configuration specify at least one of the following: the same spatial relationship information, the same uplink transmission configuration indicator state, the same transmission comb, the same number of SRS ports, the same frequency domain location in the same bandwidth portion, the same frequency hopping parameters, the same transmit power, or a combination thereof.

[0180] In some examples, a first SRS configuration specifies a first set of spatial relationship information, a second SRS configuration specifies a second set of spatial relationship information, and verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first set of spatial relationship information and the second set of spatial relationship information specify at least one of the following: the same serving cell identifier, the same synchronization signal block index, the same channel state information reference signal index, the same SRS resource identifier, the same uplink bandwidth portion, or a combination thereof.

[0181] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first uplink transmission configuration indicator state and the second SRS configuration specifies that first uplink transmission configuration indicator state.

[0182] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first number of ports and the second SRS configuration specifies that first number of ports.

[0183] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first transmission comb value and the second SRS configuration specifies that first transmission comb value.

[0184] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first frequency domain location and the second SRS configuration specifies that first frequency domain location.

[0185] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first frequency hopping configuration value and the second SRS configuration specifies that first frequency hopping configuration value.

[0186] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first SRS bandwidth and a first SRS frequency hopping bandwidth and the second SRS configuration specifies the first SRS bandwidth and the first SRS frequency hopping bandwidth.

[0187] In some examples, verifying whether using a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission may include determining whether the first SRS configuration specifies a first transmit power configuration and the second SRS configuration specifies that first transmit power configuration.

[0188] In some examples, the UE may transmit capability information to the base station, wherein the capability information indicates that the user equipment supports maintaining phase continuity of SRS transmissions across different SRS times, and wherein receiving the indication may include receiving the indication after transmitting the capability information.

[0189] Figure 11 This is a flowchart illustrating an example method 1100 for wireless communication according to some aspects of this disclosure. As described below, some or all of the described features may be omitted in a particular implementation within the scope of this disclosure, and some described features may not be required to implement all examples. In some examples, method 1100 may be... Figure 8 The method 1100 is executed by the UE 800 described in the text. In some examples, method 1100 may be executed by any suitable equipment or apparatus for implementing the functions or algorithms described below.

[0190] In block 1102, the UE may receive a first resource allocation for scheduling a first SRS transmission for a first detection reference signal (SRS) timing and a first SRS configuration for the first SRS transmission. For example, the above combined Figure 8 The SRS configuration circuitry 843 shown and described, together with the communication and processing circuitry 842 and the transceiver 810, can provide means for receiving a first resource allocation for scheduling a first SRS transmission for a first probe reference signal (SRS) timing and a first SRS configuration for the first SRS transmission.

[0191] In block 1104, the UE may receive a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission. For example, the SRS configuration circuitry 842, together with the communication and processing circuitry 841 and the transceiver 810, may provide means for receiving the second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission.

[0192] In block 1106, the UE can receive an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission. For example, the SRS configuration circuitry 842, together with the communication and processing circuitry 841 and the transceiver 810, can provide means for receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0193] In block 1108, the UE can determine whether the first SRS configuration and the second SRS configuration specify the same information after receiving the indication in block 1106. For example, the SRS configuration circuitry 842 can provide means for determining whether the first SRS configuration and the second SRS configuration specify the same information.

[0194] In box 1110, the UE can, after determining whether the first SRS configuration and the second SRS configuration specify the same information, transmit a first SRS transmission during a first SRS timing and transmit a second SRS transmission during a second SRS timing. For example, the above combined Figure 8 The SRS processing circuitry system 843 shown and described, together with the communication and processing circuitry system 841 and the transceiver 810, can provide means for transmitting a first SRS transmission during a first SRS timing and for transmitting a second SRS transmission during a second SRS timing.

[0195] In some examples, determining whether the first SRS configuration and the second SRS configuration specify the same information may include determining whether the first SRS configuration and the second SRS configuration specify at least one of the following: the same spatial relationship information, the same uplink transmission configuration indicator status, the same transmission comb, the same number of SRS ports, the same frequency domain location in the same bandwidth portion, the same frequency hopping parameters, the same transmit power, or a combination thereof.

[0196] In some examples, determining whether the first SRS configuration and the second SRS configuration specify the same information may include determining that the first SRS configuration and the second SRS configuration specify the same information; and transmitting the first SRS transmission and the second SRS transmission may include transmitting the first SRS transmission according to the first SRS configuration and transmitting the second SRS transmission according to the second SRS configuration, thereby maintaining phase continuity across the first SRS transmission and the second SRS transmission. In some examples, maintaining phase continuity across the first SRS transmission and the second SRS transmission may include maintaining substantially the same phase continuity (e.g., power amplifier phase) across the first SRS transmission and the second SRS transmission.

[0197] In some examples, determining whether the first SRS configuration and the second SRS configuration specify the same information may include determining that the first SRS configuration and the second SRS configuration do not specify the same information; and transmitting the first SRS transmission and the second SRS transmission may include transmitting the first SRS transmission according to the first SRS configuration and transmitting the second SRS transmission according to the second SRS configuration, as well as suppressing phase continuity across the first SRS transmission and the second SRS transmission.

[0198] In some examples, determining whether the first SRS configuration and the second SRS configuration specify the same information may include determining that the first SRS configuration and the second SRS configuration do not specify the same information; and transmitting the first SRS transmission and the second SRS transmission may include transmitting the first SRS transmission and transmitting the second SRS transmission, thereby maintaining phase continuity across the first SRS transmission and the second SRS transmission.

[0199] In one configuration, user equipment 800 includes means for receiving a first resource allocation for scheduling a first SRS transmission for a first detection reference signal (SRS) timing and a first SRS configuration for the first SRS transmission; means for receiving a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission; means for receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; and means for transmitting the first SRS transmission during the first SRS timing and the second SRS transmission during the second SRS timing after verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission. In one aspect, the aforementioned means may be... Figure 8 The processor 804 shown is configured to perform the functions described in the aforementioned apparatus (e.g., as discussed above). Alternatively, the aforementioned apparatus may be a circuit or any device configured to perform the functions described in the aforementioned apparatus.

[0200] Of course, in the above examples, the circuitry included in processor 804 is provided merely as an example, and other means for performing the described functions may be included within various aspects of this disclosure, including but not limited to instructions stored in computer-readable medium 806, or... Figure 1 , 2 Described in one or more of 7 and 8 and using, for example, this article about Figures 9-11 Any other suitable device or apparatus for the described method and / or algorithm.

[0201] Figure 12 This is a conceptual diagram illustrating an example of the hardware implementation of a base station (BS) 1214 employing a processing system 1200. In some implementations, BS 1200 may correspond to... Figure 1 , 2 The BS (e.g., gNB) or any of the scheduling entities shown in any of 7.

[0202] According to various aspects of this disclosure, an element, or any part thereof, or any combination thereof, may be implemented using the processing system 1214. The processing system may include one or more processors 1204. The processing system 1214 may be coupled with… Figure 8The processing system 814 described herein is substantially the same, including a bus interface 1208, a bus 1202, a memory 1205, a processor 1204, and a computer-readable medium 1206. Additionally, the memory 1205 may include SRS information 1215 that can be used by the processor 1204 for SRS operations as discussed herein. Furthermore, the BS 1200 may include an interface 1230 (e.g., a network interface) that provides means for communicating with at least one other device within the core network and at least one radio access network.

[0203] The BS1200 can be configured to perform any one or more of the operations described herein (e.g., as combined above). Figures 1-7 The description and the following text in combination Figures 13-15 (As described). In some aspects of this disclosure, such as the processor 1204 utilized in BS1200, circuitry may be configured for various functions.

[0204] Processor 1204 can be configured to generate, schedule, and modify resource assignments or grants to time-frequency resources (e.g., a set of one or more resource elements). For example, processor 1204 can schedule time-frequency resources within multiple time-division duplex (TDD) and / or frequency-division duplex (FDD) subframes, time slots, and / or mini-time slots to carry user data traffic and / or control information to and / or from multiple UEs.

[0205] Processor 1204 can be configured to schedule resources for transmission of downlink reference signals (e.g., SSB or CSI-RS) on multiple downlink beams of a downlink beam sweep, based on a selected downlink beam sweep type and a selected number of downlink reference signal resources. Processor 1204 can be further configured to schedule resources for uplink transmission of uplink reference signals (e.g., SSB or CSI-RS) on multiple downlink beams of an uplink beam sweep, based on a selected beam sweep type and a selected number of uplink reference signal resources.

[0206] Processor 1204 may be further configured to schedule resources for the transmission of uplink signals. In some examples, resources may be associated with one or more uplink transmit beams and one or more corresponding receive beams applied to the uplink signal (e.g., based on uplink BPL). In some examples, resources may be associated with an indication of the number of uplink transmit beams to be used for the uplink signal, the number of repetitions of each uplink transmit beam for the uplink signal, and a multiplexing scheme when more than one uplink transmit beam is used to transmit the uplink signal.

[0207] In some aspects of this disclosure, processor 1204 may include communication and processing circuitry system 1241. Communication and processing circuitry system 1241 may be configured to communicate with a UE. Communication and processing circuitry system 1241 may include one or more hardware components providing a physical structure for performing various processes related to communication (e.g., signal reception and / or signal transmission) as described herein. Communication and processing circuitry system 1241 may further include one or more hardware components providing a physical structure for performing various processes related to signal processing (e.g., processing received signals and / or processing signals for transmission) as described herein. Communication and processing circuitry system 1241 may further be configured to execute communication and processing software 1206 included on computer-readable medium 1251 to implement one or more functions described herein.

[0208] In some examples, the communication and processing circuitry 1241 may be configured to receive and process uplink beamforming signals at millimeter-wave frequencies or sub-6 GHz frequencies via transceiver 1210 and antenna array 1220. For example, the communication and processing circuitry 1241 may be configured to receive a corresponding reference signal (e.g., SRS or DMRS) from the UE on each of a plurality of uplink beams during uplink beam sweep.

[0209] In some examples, the communication and processing circuitry system 1241 may be further configured to generate and transmit downlink beamforming signals at millimeter-wave frequencies or sub-6 GHz frequencies via transceiver 1210 and antenna array 1220. For example, the communication and processing circuitry system 1241 may be configured to transmit a corresponding downlink reference signal (e.g., SSB or CSI-RS) to the UE via at least one first antenna panel of antenna array 2520 on each of a plurality of downlink beams during downlink beam sweep. The communication and processing circuitry system 1241 may be further configured to receive beam measurement reports from the UE.

[0210] The communication and processing circuitry system 1241 may be further configured to receive messages from the UE, such as MAC-CE carried in the PUSCH, UCI in the PUCCH, random access messages, or RRC messages. The communication and processing circuitry system 1241 may be further configured to receive from the UE a scheduling request for uplink permission for the PUSCH (e.g., via UCI in the PUCCH).

[0211] The communication and processing circuitry system 1241 may be further configured to receive uplink signals on one or more uplink receive beams via one or more uplink transmit beams applied to the uplink signals. For example, the communication and processing circuitry system 1241 may be configured to receive uplink signals on one or more uplink receive beams via at least one second antenna panel of the antenna array 1220. The uplink signals may include, for example, PUCCH, PUSCH, SRS, DMRS, or PRACH.

[0212] The communication and processing circuitry system 1241 may be further configured to control the antenna array 1220 and transceiver 1210 to generate multiple downlink transmit beams during downlink beam sweep. The communication and processing circuitry system 1241 may be further configured to receive beam measurement reports from the UE using the communication and processing circuitry system 1244. The communication and processing circuitry system 1241 may be further configured to identify one or more selected uplink beams based on these beam measurements. In some examples, the communication and processing circuitry system 1241 may be configured to, for each of the serving downlink transmit beams, compare the corresponding RSRP (or other beam measurement) measured on each of the downlink receive beams to identify the serving downlink receive beam, and further identify that serving downlink receive beam as a selected uplink transmit beam. Each serving downlink receive beam may have the highest measured RSRP (or other beam measurement) for one of the downlink transmit beams.

[0213] The communication and processing circuitry system 1241 can be configured to receive one or more uplink transmit beams in an uplink beam sweep. Each uplink transmit beam may carry an uplink reference signal (e.g., SRS) for measurement by the communication and processing circuitry system 1241. The communication and processing circuitry system 1241 can be further configured to obtain multiple beam measurements on each of the multiple uplink receive beams of the antenna array 1220 for each of the uplink transmit beams. The communication and processing circuitry system 1241 can be further configured to select a chosen uplink transmit beam and a corresponding uplink receive beam to form a respective uplink BPL based on the uplink beam measurements.

[0214] In some implementations where communication involves receiving information, the communication and processing circuitry system 1241 may obtain information from components of the BS 1200 (e.g., from a transceiver 1210 that receives information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium), process (e.g., decode) the information, and output the processed information. For example, the communication and processing circuitry system 1241 may output the information to another component of the processor 1204, to a memory 1205, or to a bus interface 1208. In some examples, the communication and processing circuitry system 1241 may receive one or more of signals, messages, other information, or any combination thereof. In some examples, the communication and processing circuitry system 1241 may receive information via one or more channels. In some examples, the communication and processing circuitry system 1241 may include the functionality of means for receiving. In some examples, the communication and processing circuitry system 1241 may include the functionality of means for decoding.

[0215] In some implementations, where communication involves sending (e.g., transmitting) information, the communication and processing circuitry system 1241 may obtain information from (e.g., from another component of processor 1204, memory 1205, or bus interface 1208), process (e.g., encode) that information, and output the processed information. For example, the communication and processing circuitry system 1241 may output information to transceiver 1210 (e.g., to transmit information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium). In some examples, the communication and processing circuitry system 1241 may send one or more of signals, messages, other information, or any combination thereof. In some examples, the communication and processing circuitry system 1241 may send information via one or more channels. In some examples, the communication and processing circuitry system 1241 may include the functionality of means for sending (e.g., means for transmitting). In some examples, the communication and processing circuitry system 1241 may include the functionality of means for encoding.

[0216] Processor 1204 may include SRS configuration circuitry 1242, which is configured to perform SRS configuration-related operations as discussed herein (e.g., in conjunction with...). Figure 6 and 7 (One or more operations described herein). The SRS configuration circuit system 1242 may be configured to execute the SRS configuration software 1252 included on the computer-readable medium 1206 to perform one or more functions described herein.

[0217] SRS configuration circuit system 1242 may include functionality for defining SRS configuration (e.g., ... Figure 7 708, 710 and / or 710, and / or Figure 13 Box 1302, and / orFigure 14 Box 1404, and / or Figure 15 (as described in box 1504). For example, the SRS configuration circuitry 1242 can specify the same parameters for different SRS configurations (e.g., for different SRS transmissions).

[0218] SRS configuration circuit system 1242 may include functionality for transmitting SRS configuration (e.g., ... Figure 7 708, 710 and / or 710, and / or Figure 13 Box 1302, and / or Figure 14 Box 1406, and / or Figure 15 (as described in box 1504). For example, the SRS configuration circuitry 1242, together with the communication and processing circuitry 1241 and the transceiver 1210, can transmit SRS configuration on the PDCCH.

[0219] Processor 1204 may include SRS processing circuitry 1243 configured to perform SRS processing-related operations as discussed herein (e.g., in conjunction with...). Figure 6 and 7 (One or more operations described herein). The SRS processing circuitry system 1243 may be configured to execute the SRS processing software 1253 included on the computer-readable medium 1206 to perform one or more functions described herein.

[0220] SRS processing circuitry system 1243 may include functionality for determining the means of jointly processing SRS transmissions (e.g., ... Figure 7 726, and / or Figure 13 Box 1302, and / or Figure 14 Box 1402, and / or Figure 15 (As described in box 1502). For example, SRS configuration circuitry 1242 can determine the need for more reliable SRS estimation.

[0221] SRS processing circuitry system 1243 may include functionality for receiving SRS transmissions (e.g., such as...). Figure 7 720, 722 and / or 724, and / or Figure 13 Boxes 1304 and / or 1306, and / or Figure 14 Boxes 1408 and / or 1410, and / or Figure 15 (As described in boxes 1506 and / or 1508). For example, the SRS processing circuitry 1243, together with the communication and processing circuitry 1241 and the transceiver 1210, can receive SRS transmissions on scheduled uplink resources.

[0222] SRS processing circuitry system 1243 may include functionality for jointly processing SRS transmissions (e.g., such as...). Figure 7 726, and / or Figure 13 Box 1308, and / or Figure 14 Box 1412, and / or Figure 15 (as described in block 1510). For example, SRS processing circuitry 1243 can combine SRS transmissions to estimate the SRS transmitted by the UE.

[0223] In some examples, the SRS processing circuitry system 1243 can monitor SRS resources allocated for SRS timing. The SRS processing circuitry system 1243 can decode the energy received on those resources to recover the SRS. The SRS processing circuitry system 1243 may include functionality for generating a channel estimate based on the SRS. For example, the SRS processing circuitry system 1243 can compare the received SRS with a known original SRS transmitted by the UE. The SRS processing circuitry system 1243 can then generate a channel estimate based on any differences between the received SRS and the known original SRS.

[0224] Figure 13 This is a flowchart illustrating an example method 1300 for wireless communication according to some aspects of this disclosure. As described below, some or all of the described features may be omitted in a particular implementation within the scope of this disclosure, and some described features may not be required to implement all examples. In some examples, method 1300 may be... Figure 12 The method is executed by BS1200 as explained in the text. In some examples, method 1300 may be executed by any suitable equipment or apparatus for implementing the functions or algorithms described below.

[0225] In box 1302, the BS can transmit multiple probe reference signal (SRS) configurations to the user equipment (UE), which are defined to maintain phase continuity across multiple SRS transmissions associated with multiple SRS timings. For example, the above combined Figure 12 The SRS configuration circuitry 1242 shown and described, together with the communication and processing circuitry 1241 and the transceiver 1210, can provide means for transmitting multiple probe reference signal (SRS) configurations to user equipment (UE), the multiple SRS configurations being defined to maintain phase continuity across multiple SRS transmissions associated with multiple SRS timings.

[0226] In some examples, the BS may determine to jointly process the multiple SRS transmissions. In some examples, determining to jointly process the multiple SRS transmissions may include at least one of the following: determining that the user equipment is near the cell edge of the serving cell of the user equipment, determining that the channel quality between the user equipment and the base station is less than a threshold quality, determining that the signal-to-noise ratio associated with the user equipment is less than a threshold signal-to-noise ratio, or a combination thereof.

[0227] In some examples, the BS can define the multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions. In some examples, defining the multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions can include specifying the same parameter values ​​for the multiple SRS configurations. In some examples, defining the multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions can include defining the multiple SRS configurations to maintain substantially the same phase continuity (e.g., power amplifier phase) across the multiple SRS transmissions.

[0228] In some examples, each of the multiple SRS configurations specifies at least one of the following: identical spatial relationship information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain location in the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or a combination thereof.

[0229] In some examples, the plurality of SRS configurations may include a first SRS configuration for a first SRS transmission and a second SRS configuration for a second SRS transmission. In some examples, the first SRS configuration specifies a first uplink transmission configuration indicator state, and the second SRS configuration specifies that first uplink transmission configuration indicator state. In some examples, the first SRS configuration specifies a first number of ports, and the second SRS configuration specifies that first number of ports. In some examples, the first SRS configuration specifies a first transmission comb value, and the second SRS configuration specifies that first transmission comb value. In some examples, the first SRS configuration specifies a first frequency domain location, and the second SRS configuration specifies that first frequency domain location. In some examples, the first SRS configuration specifies a first frequency hopping configuration value, and the second SRS configuration specifies that first frequency hopping configuration value. In some examples, the first SRS configuration specifies a first SRS bandwidth and a first SRS frequency hopping bandwidth, and the second SRS configuration specifies both the first SRS bandwidth and the first SRS frequency hopping bandwidth. In some examples, the first SRS configuration specifies a first transmit power configuration, and the second SRS configuration specifies that first transmit power configuration.

[0230] In some examples, the first SRS configuration specifies a first set of spatial relationship information and the second SRS configuration specifies a second set of spatial relationship information. In some examples, the first set of spatial relationship information and the second set of spatial relationship information specify at least one of the following: the same serving cell identifier, the same synchronization signal block index, the same channel state information reference signal index, the same SRS resource identifier, the same uplink bandwidth portion, or a combination thereof.

[0231] In box 1304, the BS can receive the first SRS transmission of the plurality of SRS transmissions from the UE during the first SRS timing of the plurality of SRS timings. For example, the above combined Figure 12 The SRS processing circuitry system 1243 shown and described, together with the communication and processing circuitry system 1241 and the transceiver 1210, can provide means for receiving a first SRS transmission from the UE during a first SRS transmission of the plurality of SRS transmissions in the first SRS timing of the plurality of SRS timings.

[0232] In block 1306, the BS can receive a second SRS transmission from the UE during a second SRS timing of the plurality of SRS timings. For example, the SRS processing circuitry system 1243, together with the communication and processing circuitry system 1241 and the transceiver 1210, can provide means for receiving a second SRS transmission from the UE during a second SRS timing of the plurality of SRS transmissions.

[0233] In block 1308, the BS can jointly process the first SRS transmission and the second SRS transmission to generate an SRS estimate. For example, the SRS processing circuitry system 1243 can provide means for jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0234] In some examples, jointly processing the first SRS transmission and the second SRS transmission may include: combining the first SRS transmission and the second SRS transmission to provide a combined SRS transmission; and processing the combined SRS transmission to generate the SRS estimate. In some examples, the combination may include a weighted combination, wherein a first weight is associated with the first SRS transmission and a second weight is associated with the second SRS transmission.

[0235] In some examples, jointly processing the first SRS transmission and the second SRS transmission may include: processing the first SRS transmission to provide a first SRS estimate; processing the second SRS transmission to provide a second SRS estimate; and combining the first SRS estimate and the second SRS estimate to generate an SRS estimate. In some examples, this combination may include a weighted combination, wherein a first weight is associated with the first SRS estimate and a second weight is associated with the second SRS estimate.

[0236] In some examples, the BS may receive capability information from the user equipment, wherein the capability information indicates that the user equipment supports maintaining phase continuity across SRS transmissions for different SRS timings. In some examples, the BS may transmit an instruction to the user equipment after receiving the capability information, wherein the instruction configures the user equipment to maintain phase continuity across a first SRS transmission and a second SRS transmission.

[0237] In some examples, transmitting the plurality of SRS configurations to the user equipment may include transmitting at least one downlink control information (DCI) to the user equipment; the at least one DCI specifies a first resource for a first SRS timing and a second resource for a second SRS timing; and the at least one DCI specifies that the user equipment will use the first SRS configuration for a first SRS transmission during the first SRS timing and that the user equipment will use the second SRS configuration for a second SRS transmission during the second SRS timing.

[0238] Figure 14 This is a flowchart illustrating an example method 1400 for wireless communication according to some aspects of this disclosure. As described below, some or all of the described features may be omitted in a particular implementation within the scope of this disclosure, and some described features may not be required to implement all examples. In some examples, method 1400 may be... Figure 12 The method is executed by BS1200 as explained in the text. In some examples, method 1400 may be executed by any suitable equipment or apparatus for implementing the functions or algorithms described below.

[0239] In box 1402, the BS can determine which SRS transmissions to be jointly processed in relation to multiple probe reference signal (SRS) timings. For example, the above combination Figure 12 The SRS configuration circuit system 1242 shown and described can provide means for determining to jointly process multiple SRS transmissions associated with multiple probe reference signal (SRS) timings.

[0240] In some examples, determining to jointly process the multiple SRS transmissions may include at least one of the following: determining that the user equipment is near the cell edge of the serving cell of the user equipment; determining that the channel quality between the user equipment and the base station is less than a threshold quality; determining that the signal-to-noise ratio associated with the user equipment is less than a threshold signal-to-noise ratio; or a combination thereof.

[0241] In block 1404, the BS can define multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions (e.g., after block 1402 determines that the multiple SRS transmissions should be processed jointly). For example, SRS configuration circuitry 1242 can provide means for defining multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions.

[0242] In some examples, defining the multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions may include specifying the same parameter values ​​for the multiple SRS configurations. In some examples, defining the multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions may include defining the multiple SRS configurations to maintain substantially the same phase continuity (e.g., power amplifier phase) across the multiple SRS transmissions.

[0243] In some examples, each of the multiple SRS configurations specifies at least one of the following: identical spatial relationship information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain location in the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or a combination thereof.

[0244] In some examples, the plurality of SRS configurations may include a first SRS configuration for a first SRS transmission and a second SRS configuration for a second SRS transmission. In some examples, the first SRS configuration specifies a first uplink transmission configuration indicator state, and the second SRS configuration specifies that first uplink transmission configuration indicator state. In some examples, the first SRS configuration specifies a first number of ports, and the second SRS configuration specifies that first number of ports. In some examples, the first SRS configuration specifies a first transmission comb value, and the second SRS configuration specifies that first transmission comb value. In some examples, the first SRS configuration specifies a first frequency domain location, and the second SRS configuration specifies that first frequency domain location. In some examples, the first SRS configuration specifies a first frequency hopping configuration value, and the second SRS configuration specifies that first frequency hopping configuration value. In some examples, the first SRS configuration specifies a first SRS bandwidth and a first SRS frequency hopping bandwidth, and the second SRS configuration specifies both the first SRS bandwidth and the first SRS frequency hopping bandwidth. In some examples, the first SRS configuration specifies a first transmit power configuration, and the second SRS configuration specifies that first transmit power configuration.

[0245] In some examples, the first SRS configuration specifies a first set of spatial relationship information, the second SRS configuration specifies a second set of spatial relationship information, and the first set of spatial relationship information and the second set of spatial relationship information specify at least one of the following: the same serving cell identifier, the same synchronization signal block index, the same channel state information reference signal index, the same SRS resource identifier, the same uplink bandwidth portion, or a combination thereof.

[0246] In box 1406, the BS can transmit multiple SRS configurations to the User Equipment (UE). For example, the above combined Figure 12 The SRS configuration circuitry 1242 shown and described, together with the communication and processing circuitry 1241 and the transceiver 1210, can provide means for transmitting multiple SRS configurations to user equipment (UE).

[0247] In box 1408, the BS can receive the first SRS transmission of the plurality of SRS transmissions from the UE during the first SRS timing of the plurality of SRS timings. For example, the above combined Figure 12 The SRS processing circuitry system 1243 shown and described, together with the communication and processing circuitry system 1241 and the transceiver 1210, can provide means for receiving a first SRS transmission from the UE during a first SRS transmission of the plurality of SRS transmissions in the first SRS timing of the plurality of SRS timings.

[0248] In block 1410, the BS can receive a second SRS transmission from the UE during a second SRS timing of the plurality of SRS timings. For example, the SRS processing circuitry system 1243, together with the communication and processing circuitry system 1241 and the transceiver 1210, can provide means for receiving a second SRS transmission from the UE during a second SRS timing of the plurality of SRS transmissions.

[0249] In block 1412, the BS can jointly process the first SRS transmission and the second SRS transmission to generate an SRS estimate. For example, the SRS processing circuitry system 1243 can provide means for jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0250] In some examples, jointly processing the first SRS transmission and the second SRS transmission may include: combining the first SRS transmission and the second SRS transmission to provide a combined SRS transmission; and processing the combined SRS transmission to generate the SRS estimate. In some examples, the combination may include a weighted combination, wherein a first weight is associated with the first SRS transmission and a second weight is associated with the second SRS transmission.

[0251] In some examples, jointly processing the first SRS transmission and the second SRS transmission may include: processing the first SRS transmission to provide a first SRS estimate; processing the second SRS transmission to provide a second SRS estimate; and combining the first SRS estimate and the second SRS estimate to generate an SRS estimate. In some examples, this combination may include a weighted combination, wherein a first weight is associated with the first SRS estimate and a second weight is associated with the second SRS estimate.

[0252] In some examples, the BS may receive capability information from the user equipment, wherein the capability information indicates that the user equipment supports maintaining phase continuity across SRS transmissions for different SRS timings. In some examples, the BS may transmit an instruction to the user equipment after receiving the capability information, wherein the instruction configures the user equipment to maintain phase continuity across a first SRS transmission and a second SRS transmission.

[0253] In some examples, in order to transmit the multiple SRS configurations to the user equipment, the BS may transmit at least one downlink control information (DCI) to the user equipment, wherein the at least one DCI specifies a first resource for a first SRS timing and a second resource for a second SRS timing; and the at least one DCI specifies that the user equipment will use the first SRS configuration for a first SRS transmission during the first SRS timing and that the user equipment will use the second SRS configuration for a second SRS transmission during the second SRS timing.

[0254] Figure 15 This is a flowchart illustrating an example method 1500 for wireless communication according to some aspects of this disclosure. As described below, some or all of the described features may be omitted in a particular implementation within the scope of this disclosure, and some described features may not be required to implement all examples. In some examples, method 1500 may be... Figure 12 The method is executed by the BS1200 described in the text. In some examples, method 1500 may be executed by any suitable equipment or apparatus for implementing the functions or algorithms described below.

[0255] In box 1502, the BS can determine to jointly process a first SRS transmission associated with a first probe reference signal (SRS) timing and a second SRS transmission associated with a second SRS timing. For example, the above combination Figure 12 The SRS configuration circuit system 1242 shown and described can provide means for determining to jointly process a first SRS transmission associated with a first probe reference signal (SRS) timing and a second SRS transmission associated with a second SRS timing.

[0256] In some examples, determining to jointly process the first SRS transmission and the second SRS transmission may include at least one of the following: determining that the user equipment is near the cell edge of the serving cell of the user equipment; determining that the channel quality between the user equipment and the base station is less than a threshold quality; determining that the signal-to-noise ratio associated with the user equipment is less than a threshold signal-to-noise ratio; or a combination thereof.

[0257] In some examples, the first SRS timing corresponds to at least one first time slot, and the second SRS timing corresponds to at least one second time slot that is different from at least one first time slot.

[0258] In box 1504, the BS may transmit a first SRS configuration for a first SRS transmission and a second SRS configuration for a second SRS transmission to the User Equipment (UE) (e.g., after determining that the first and second SRS transmissions should be processed jointly). In some examples, the first and second SRS configurations specify at least one of the following: identical spatial relation information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain location in the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or a combination thereof. For example, the above combined... Figure 12 The SRS configuration circuitry 1242 shown and described, together with the communication and processing circuitry 1241 and the transceiver 1210, can provide means for transmitting to the user equipment (UE) a first SRS configuration for a first SRS transmission and a second SRS configuration for a second SRS transmission.

[0259] In box 1506, the BS may receive the first SRS transmission from the UE during the first SRS timing. For example, the above combined Figure 12 The SRS processing circuitry system 1243 shown and described, together with the communication and processing circuitry system 1241 and the transceiver 1210, can provide means for receiving a first SRS transmission from the UE during a first SRS timing.

[0260] In block 1508, the BS can receive a second SRS transmission from the UE during a second SRS timing. For example, the SRS processing circuitry 1243, together with the communication and processing circuitry 1241 and the transceiver 1210, can provide means for receiving a second SRS transmission from the UE during a second SRS timing.

[0261] In block 1510, the BS can jointly process the first SRS transmission and the second SRS transmission to generate an SRS estimate. For example, the SRS processing circuitry system 1243 can provide means for jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0262] In some examples, jointly processing the first SRS transmission and the second SRS transmission may include: combining the first SRS transmission and the second SRS transmission to provide a combined SRS transmission; and processing the combined SRS transmission to generate the SRS estimate.

[0263] In some examples, jointly processing the first SRS transmission and the second SRS transmission may include: processing the first SRS transmission to provide a first SRS estimate; processing the second SRS transmission to provide a second SRS estimate; and combining the first SRS estimate and the second SRS estimate to generate an SRS estimate.

[0264] In some examples, the BS can define the first SRS configuration and the second SRS configuration to maintain phase continuity across the first SRS transmission and the second SRS transmission. In some examples, defining the first SRS configuration and the second SRS configuration to maintain phase continuity across the first SRS transmission and the second SRS transmission may include specifying the same parameter values ​​for the first SRS configuration and the second SRS configuration.

[0265] In some examples, defining the first SRS configuration and the second SRS configuration as maintaining phase continuity across the first SRS transmission and the second SRS transmission may include defining the first SRS configuration and the second SRS configuration as maintaining substantially the same phase continuity (e.g., power amplifier phase) for the first SRS transmission and the second SRS transmission.

[0266] In some examples, the BS may receive capability information from the user equipment, wherein the capability information indicates that the user equipment supports clustering of SRS transmissions across different SRS timings. In some examples, the BS may transmit an instruction to the user equipment after receiving the capability information, wherein the instruction configures the user equipment to maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0267] In some examples, transmitting the multiple SRS configurations to the user equipment may include transmitting a first downlink control information (DCI) and a second DCI to the user equipment, the first DCI specifying a first resource for a first SRS timing and further specifying that the user equipment will use the first SRS configuration for first SRS transmission during the first SRS timing, and the second DCI specifying a second resource for a second SRS timing and further specifying that the user equipment will use the second SRS configuration for second SRS transmission during the second SRS timing.

[0268] In one configuration, base station 1200 includes: means for transmitting a plurality of detection reference signal (SRS) configurations to user equipment, the plurality of SRS configurations being defined to maintain phase continuity across a plurality of SRS transmissions associated with a plurality of SRS timings; means for receiving a first SRS transmission from the user equipment during a first SRS timing of the plurality of SRS transmissions; means for receiving a second SRS transmission from the user equipment during a second SRS timing of the plurality of SRS transmissions; and means for jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate. In one aspect, the aforementioned means may be... Figure 12 The processor 1204 shown is configured to perform the functions described in the aforementioned apparatus (e.g., as discussed above). Alternatively, the aforementioned apparatus may be a circuit or any device configured to perform the functions described in the aforementioned apparatus.

[0269] Of course, in the above examples, the circuitry included in processor 1204 is provided merely as an example, and other means for performing the described functions may be included within various aspects of this disclosure, including but not limited to instructions stored in computer-readable medium 1206, or... Figure 1 , 2 Described in one or more of 7 and 12 and using, for example, this article about Figures 13-15 Any other suitable device or apparatus for the described method and / or algorithm.

[0270] In some examples, a method of wireless communication at a user equipment may include: receiving a first resource allocation for scheduling a first SRS transmission for a first probe reference signal (SRS) timing and a first SRS configuration for the first SRS transmission; receiving a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission; receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; after receiving the indication, verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission; and after verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission during the first SRS timing and during the second SRS timing, transmitting the first SRS transmission during the first SRS timing and transmitting the second SRS transmission during the second SRS timing.

[0271] In some examples, a user equipment may include a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory. The processor may be configured to receive, via the transceiver, a first resource allocation for scheduling a first SRS transmission for a first Probe Reference Signal (SRS) timing and a first SRS configuration for the first SRS transmission; via the transceiver, a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission; via the transceiver, an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; upon receiving the indication, verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission; and after verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission via the transceiver during the first SRS timing and during the second SRS timing.

[0272] In some examples, a user equipment may include: means for receiving a first resource allocation for scheduling a first SRS transmission for a first probe reference signal (SRS) timing and a first SRS configuration for the first SRS transmission; means for receiving a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission; means for receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; means for verifying, upon receiving the indication, whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission; and means for transmitting the first SRS transmission during the first SRS timing and transmitting the second SRS transmission during the second SRS timing after verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0273] In some examples, an article of manufacture for use by a user equipment includes a computer-readable medium storing instructions executable by one or more processors of the user equipment to: receive a first resource allocation and a first SRS configuration for scheduling a first SRS transmission for a first Probe Reference Signal (SRS) timing; receive a second resource allocation and a second SRS configuration for scheduling a second SRS transmission for a second SRS timing; receive an indication to maintain phase continuity across the first and second SRS transmissions; upon receiving the indication, verify whether using the first and second SRS configurations will maintain phase continuity across the first and second SRS transmissions; and after verifying whether using the first and second SRS configurations will maintain phase continuity across the first and second SRS transmissions, transmit the first SRS transmission during the first SRS timing and transmit the second SRS transmission during the second SRS timing.

[0274] In some examples, a method for wireless communication at a base station may include: determining to jointly process multiple SRS transmissions associated with multiple detection reference signal (SRS) timings; defining multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions; transmitting the multiple SRS configurations to a user equipment (UE); receiving a first SRS transmission from the UE during a first SRS timing of the multiple SRS timings; receiving a second SRS transmission from the UE during a second SRS timing of the multiple SRS timings; and jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0275] In some examples, a base station may include a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory. The processor may be configured to determine to jointly process multiple SRS transmissions associated with multiple detection reference signal (SRS) timings; define multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions; transmit the multiple SRS configurations to a user equipment (UE) via the transceiver; receive a first SRS transmission from the UE via the transceiver during a first SRS timing of the multiple SRS timings; receive a second SRS transmission from the UE via the transceiver during a second SRS timing of the multiple SRS timings; and jointly process the first and second SRS transmissions to generate an SRS estimate.

[0276] In some examples, a base station may include: means for determining to jointly process multiple SRS transmissions associated with multiple detection reference signal (SRS) timings; means for defining multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions; means for transmitting the multiple SRS configurations to a user equipment (UE); means for receiving a first SRS transmission from the UE during a first SRS timing of the multiple SRS timings; means for receiving a second SRS transmission from the UE during a second SRS timing of the multiple SRS timings; and means for jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0277] In some examples, an article of manufacture for use by a base station includes a computer-readable medium storing instructions executable by one or more processors of the base station to: determine to jointly process multiple SRS transmissions associated with multiple detection reference signal (SRS) timings; define multiple SRS configurations to maintain phase continuity across the multiple SRS transmissions; transmit the multiple SRS configurations to a user equipment (UE); receive a first SRS transmission from the UE during a first SRS timing of the multiple SRS timings; receive a second SRS transmission from the UE during a second SRS timing of the multiple SRS timings; and jointly process the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0278] In some examples, a method for wireless communication at a user equipment may include: receiving a first resource allocation for scheduling a first SRS transmission for a first probe reference signal (SRS) timing and a first SRS configuration for the first SRS transmission; receiving a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission; receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; after receiving the indication, determining whether the first SRS configuration and the second SRS configuration specify the same information; and after determining whether the first SRS configuration and the second SRS configuration specify the same information, transmitting the first SRS transmission during the first SRS timing and transmitting the second SRS transmission during the second SRS timing.

[0279] In some examples, a user equipment may include a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory. The processor may be configured to receive, via the transceiver, a first resource allocation for scheduling a first SRS transmission for a first Probe Reference Signal (SRS) timing and a first SRS configuration for the first SRS transmission; via the transceiver, a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission; via the transceiver, an indication to maintain phase continuity across the first and second SRS transmissions; upon receiving the indication, determining whether the first and second SRS configurations specify the same information; and after determining whether the first and second SRS configurations specify the same information, having the transceiver transmit the first SRS transmission during the first SRS timing and transmit the second SRS transmission during the second SRS timing.

[0280] In some examples, a user equipment may include: means for receiving a first resource allocation for scheduling a first SRS transmission for a first probe reference signal (SRS) timing and a first SRS configuration for the first SRS transmission; means for receiving a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission; means for receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; means for determining, after receiving the indication, whether the first SRS configuration and the second SRS configuration specify the same information; and means for transmitting the first SRS transmission during the first SRS timing and transmitting the second SRS transmission during the second SRS timing after determining whether the first SRS configuration and the second SRS configuration specify the same information.

[0281] In some examples, an article of manufacture for use by a user equipment includes a computer-readable medium storing instructions executable by one or more processors of the user equipment to: receive a first resource allocation and a first SRS configuration for scheduling a first SRS transmission for a first probe reference signal (SRS) timing; receive a second resource allocation and a second SRS configuration for scheduling a second SRS transmission for a second SRS timing; receive an indication to maintain phase continuity across the first and second SRS transmissions; after receiving the indication, determine whether the first and second SRS configurations specify the same information; and after determining whether the first and second SRS configurations specify the same information, transmit the first SRS transmission during the first SRS timing and transmit the second SRS transmission during the second SRS timing.

[0282] In some examples, a method for wireless communication at a base station may include: determining to jointly process a first SRS transmission associated with a first Probe Reference Signal (SRS) timing and a second SRS transmission associated with a second SRS timing; transmitting a first SRS configuration for the first SRS transmission and a second SRS configuration for the second SRS transmission to a User Equipment (UE); receiving the first SRS transmission from the UE during the first SRS timing; receiving the second SRS transmission from the UE during the second SRS timing; and jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate. The first SRS configuration and the second SRS configuration specify at least one of the following: identical spatial relation information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain location within the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or a combination thereof.

[0283] In some examples, a base station may include a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory. The processor may be configured to determine to jointly process a first SRS transmission associated with a first Probe Reference Signal (SRS) timing and a second SRS transmission associated with a second SRS timing; transmit a first SRS configuration for the first SRS transmission and a second SRS configuration for the second SRS transmission to a User Equipment (UE) via the transceiver; receive the first SRS transmission from the UE via the transceiver during the first SRS timing; receive the second SRS transmission from the UE via the transceiver during the second SRS timing; and jointly process the first and second SRS transmissions to generate an SRS estimate. The first and second SRS configurations specify at least one of the following: identical spatial relation information, identical uplink transmission configuration indicator status, identical transmission combs, identical number of SRS ports, identical frequency domain location within the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or combinations thereof.

[0284] In some examples, a base station may include: means for determining to jointly process a first SRS transmission associated with a first detection reference signal (SRS) timing and a second SRS transmission associated with a second SRS timing; means for transmitting a first SRS configuration for the first SRS transmission and a second SRS configuration for the second SRS transmission to a user equipment (UE); means for receiving the first SRS transmission from the UE during the first SRS timing; means for receiving the second SRS transmission from the UE during the second SRS timing; and means for jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate. The first SRS configuration and the second SRS configuration specify at least one of the following: identical spatial relationship information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain location in the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or a combination thereof.

[0285] In some examples, an article of manufacture for use by a base station includes a computer-readable medium storing instructions executable by one or more processors of the base station to: determine to jointly process a first SRS transmission associated with a first Probe Reference Signal (SRS) timing and a second SRS transmission associated with a second SRS timing; transmit a first SRS configuration for the first SRS transmission and a second SRS configuration for the second SRS transmission to a User Equipment (UE); receive the first SRS transmission from the UE during the first SRS timing; receive the second SRS transmission from the UE during the second SRS timing; and jointly process the first SRS transmission and the second SRS transmission to generate an SRS estimate. The first SRS configuration and the second SRS configuration specify at least one of the following: identical spatial relation information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain location in the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or combinations thereof.

[0286] Figures 12-15 The methods shown 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. An overview of several aspects of this disclosure is provided below:

[0287] Aspect 1: A method for wireless communication at a base station, the method comprising: transmitting a plurality of detection reference signal (SRS) configurations to a user equipment, the plurality of SRS configurations being defined to maintain phase continuity across a plurality of SRS transmissions associated with a plurality of SRS timings; receiving a first SRS transmission of the plurality of SRS transmissions from the user equipment during a first SRS timing of the plurality of SRS timings; receiving a second SRS transmission of the plurality of SRS transmissions from the user equipment during a second SRS timing of the plurality of SRS timings; and jointly processing the first SRS transmission and the second SRS transmission to generate an SRS estimate.

[0288] Aspect 2: The method of Aspect 1, wherein each of the plurality of SRS configurations specifies at least one of the following: identical spatial relationship information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain location in the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or a combination thereof.

[0289] Aspect 3: The method of aspect 1 or 2, wherein the plurality of SRS configurations includes a first SRS configuration for a first SRS transmission and a second SRS configuration for a second SRS transmission.

[0290] Aspect 4: The method of aspect 3, wherein: the first SRS configuration specifies a first set of spatial relationship information, the second SRS configuration specifies a second set of spatial relationship information, and the first set of spatial relationship information and the second set of spatial relationship information specify at least one of the following: the same serving cell identifier, the same synchronization signal block index, the same channel state information reference signal index, the same SRS resource identifier, the same uplink bandwidth portion, or a combination thereof.

[0291] Aspect 5: The method of any of Aspects 3 to 4, wherein: a first SRS configuration specifies a first uplink transmission configuration indicator state; and a second SRS configuration specifies the first uplink transmission configuration indicator state.

[0292] Aspect 6: The method of any of Aspects 3 to 5, wherein: the first SRS configuration specifies at least one of the following: a first number of ports, a first transmission comb value, a first frequency domain position, a first frequency hopping configuration value, a first SRS bandwidth and a first SRS frequency hopping bandwidth, a first transmit power configuration, or a combination thereof; and the second SRS configuration specifies at least one of the following: the first number of ports, the first transmission comb value, the first frequency domain position, the first frequency hopping configuration value, the first SRS bandwidth and the first SRS frequency hopping bandwidth, the first transmit power configuration, or a combination thereof.

[0293] Aspect 7: A method of any of Aspects 3 to 6, wherein: the method further includes transmitting at least one downlink control information (DCI) to the user equipment; the at least one DCI specifies a first resource for a first SRS timing and a second resource for a second SRS timing; and the at least one DCI specifies that the user equipment is to configure the first SRS for first SRS transmission during the first SRS timing and that the user equipment is to configure the second SRS for second SRS transmission during the second SRS timing.

[0294] Aspect 8: The method of any of Aspects 1 to 7 further includes: specifying the same parameter value for the plurality of SRS configurations.

[0295] Aspect 9: The method of any of Aspects 1 to 8 further includes: defining the plurality of SRS configurations to maintain substantially the same phase continuity across the plurality of SRS transmissions.

[0296] Aspect 10: The method of any of Aspects 1 to 9 further includes: receiving capability information from the user equipment, wherein the capability information indicates that the user equipment supports maintaining phase continuity across SRS transmissions for different SRS timings; and transmitting an instruction to the user equipment after receiving the capability information, wherein the instruction configures the user equipment to maintain phase continuity across a first SRS transmission and a second SRS transmission.

[0297] Aspect 11: The method of any of Aspects 1 to 10 further includes: combining a first SRS transmission and a second SRS transmission to provide a combined SRS transmission, wherein a first weight is associated with the first SRS transmission and a second weight is associated with the second SRS transmission; and processing the combined SRS transmission to generate the SRS estimate.

[0298] Aspect 12: The method of any of Aspects 1 to 10 further includes: processing a first SRS transmission to provide a first SRS estimate; processing a second SRS transmission to provide a second SRS estimate; and combining the first SRS estimate and the second SRS estimate to generate the SRS estimate, wherein a first weight is associated with the first SRS transmission and a second weight is associated with the second SRS transmission.

[0299] Aspect 13: The method of any of Aspects 1 to 12 further includes: determining to jointly process the plurality of SRS transmissions based on whether the user equipment is near the cell edge of the serving cell of the user equipment, whether the channel quality between the user equipment and the base station is less than a threshold quality, whether the signal-to-noise ratio associated with the user equipment is less than a threshold signal-to-noise ratio, or a combination thereof.

[0300] Aspect 15: A method for wireless communication at a user equipment, the method comprising: receiving a first resource allocation for scheduling a first SRS transmission for a first probe reference signal (SRS) timing and a first SRS configuration for the first SRS transmission; receiving a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission; receiving an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; and after verifying whether using the first SRS configuration and the second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission, transmitting the first SRS transmission during the first SRS timing and transmitting the second SRS transmission during the second SRS timing.

[0301] Aspect 16: The method of aspect 15 further includes: determining that phase continuity will be maintained across the first SRS transmission and the second SRS transmission using a first SRS configuration and a second SRS configuration.

[0302] Aspect 17: The method of aspect 16 further includes: transmitting a first SRS transmission according to a first SRS configuration and transmitting a second SRS transmission according to a second SRS configuration, thereby maintaining phase continuity across the first SRS transmission and the second SRS transmission.

[0303] Aspect 18: The method of aspect 17 further includes maintaining substantially the same phase continuity across the first SRS transmission and the second SRS transmission.

[0304] Aspect 19: The method of aspect 15 further includes: determining that using a first SRS configuration and a second SRS configuration will not maintain phase continuity across the first SRS transmission and the second SRS transmission.

[0305] Aspect 20: The method of aspect 19 further includes: transmitting a first SRS transmission according to a first SRS configuration and transmitting a second SRS transmission according to a second SRS configuration, and suppressing phase continuity across the first SRS transmission and the second SRS transmission.

[0306] Aspect 21: The method of aspect 19 further includes: transmitting a first SRS transmission and transmitting a second SRS transmission, thereby maintaining phase continuity across the first SRS transmission and the second SRS transmission.

[0307] Aspect 22: The method of any of Aspects 15 to 21 further includes: determining whether the first SRS configuration and the second SRS configuration specify at least one of the following: identical spatial relationship information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain location in the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or a combination thereof.

[0308] Aspect 23: A method of any of Aspects 15 to 21, wherein: a first SRS configuration specifies a first set of spatial relationship information, a second SRS configuration specifies a second set of spatial relationship information, and the method further includes determining whether the first set of spatial relationship information and the second set of spatial relationship information specify at least one of the following: the same serving cell identifier, the same synchronization signal block index, the same channel state information reference signal index, the same SRS resource identifier, the same uplink bandwidth portion, or a combination thereof.

[0309] Aspect 24: A method of any of Aspects 15 to 21, wherein verifying whether the use of a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission includes determining at least one of the following: whether the first SRS configuration specifies a first uplink transmission configuration indicator state, whether the first SRS configuration specifies a first number of ports, whether the first SRS configuration specifies a first transmission comb value, whether the first SRS configuration specifies a first frequency domain location, whether the first SRS configuration specifies a first frequency hopping configuration value, whether the first SRS configuration specifies a first SRS bandwidth and a first SRS frequency hopping bandwidth, whether the first SRS configuration specifies a first transmit power configuration, or a combination thereof.

[0310] Aspect 25: A method of any of Aspects 15 to 21, wherein verifying whether the use of a first SRS configuration and a second SRS configuration will maintain phase continuity across the first SRS transmission and the second SRS transmission includes determining at least one of the following: whether the second SRS configuration specifies a first uplink transmission configuration indicator state, whether the second SRS configuration specifies a first number of ports, whether the second SRS configuration specifies a first transmission comb value, whether the second SRS configuration specifies a first frequency domain position, whether the second SRS configuration specifies a first frequency hopping configuration value, whether the second SRS configuration specifies a first SRS bandwidth and a first SRS frequency hopping bandwidth, whether the second SRS configuration specifies a first transmit power configuration, or a combination thereof.

[0311] Aspect 26: The method of any of Aspects 15 to 25 further includes: transmitting capability information to a base station, wherein the capability information indicates that the user equipment supports maintaining phase continuity of SRS transmissions across different SRS times; and receiving the indication after transmitting the capability information.

[0312] Aspect 27: A method of any of Aspects 15 to 26, wherein: the method further includes receiving at least one downlink control information (DCI) from a base station; and the at least one DCI specifies that the user equipment is to configure a first SRS for first SRS transmission during a first SRS timing and that the user equipment is to configure a second SRS for second SRS transmission during a second SRS timing.

[0313] Aspect 28: The method of any of Aspects 15 to 27 further includes: receiving a Media Access Control-Control Element (MAC-CE) including the indication.

[0314] Aspect 29: The method of any of Aspects 15 to 28, wherein: the first SRS timing corresponds to at least one first time slot; and the second SRS timing corresponds to at least one second time slot different from the at least one first time slot.

[0315] Aspect 30: A base station comprising: a transceiver; a memory; and a processor communicatively coupled to the transceiver and the memory, wherein the processor and the memory are configured to perform any of aspects 1 to 13.

[0316] Aspect 31: A device configured for wireless communication, comprising at least one means for performing any of aspects 1 to 13.

[0317] Aspect 32: A non-transient computer-readable medium storing computer-executable code, the computer-executable code including code for causing a device to perform any of aspects 1 to 13.

[0318] Aspect 33: A user equipment comprising: a transceiver configured to communicate with a radio access network; a memory; and a processor communicatively coupled to the transceiver and the memory, wherein the processor is configured to perform any of aspects 15 to 29.

[0319] Aspect 34: A device configured for wireless communication, comprising at least one means for performing any of aspects 15 to 29.

[0320] Aspect 35: A non-transient computer-readable medium storing computer-executable code, the computer-executable code including code for causing a device to perform any of aspects 15 to 29.

[0321] Several aspects of wireless communication networks have been illustrated with reference to examples. As will be readily apparent to those skilled in the art, the various aspects described herein can be extended to other telecommunications systems, network architectures, and communication standards.

[0322] As examples, various aspects can be implemented within other systems defined by 3GPP, such as Long Term Evolution (LTE), Evolved Packet System (EPS), Universal Mobile Telecommunications System (UMTS), and / or Global System for Mobile Communications (GSM). These aspects can also be extended to systems defined by 3GPP2, such as CDMA2000 and / or Evolved Data Optimized (EV-DO). Other examples can be implemented within systems employing IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Ultra Wideband (UWB), Bluetooth, and / or other suitable systems. The actual telecommunications standards, network architecture, and / or communication standards employed will depend on the specific application and the overall design constraints imposed on the system.

[0323] Within this disclosure, the term "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation or aspect described herein as "exemplary" need not be construed as superior to or better than other aspects of this disclosure. Similarly, the term "aspect" does not require that all aspects of this disclosure include the features, advantages, or modes of operation discussed. The term "coupling" is used herein to refer to direct or indirect coupling between two objects. For example, if object A physically contacts object B, and object B contacts object C, then objects A and C can still be considered coupled to each other—even if they are not in direct physical contact. For example, a first object can be coupled to a second object, even if the first object never directly contacts the second object. The terms "circuit" and "circuit system" are used broadly and are intended to include both hardware implementations of electronic devices and conductors, and software implementations of information and instructions, which, when connected and configured, enable the performance of the functions described in this disclosure, without limitation on the type of electronic circuit, and which, when executed by a processor, enable the performance of the functions described in this disclosure.

[0324] Figures 1 to 15 One or more of the components, steps, features, and / or functions described herein may be rearranged and / or combined into a single component, step, feature, or function, or may be implemented in several components, steps, or functions. Additional elements, components, steps, and / or functions may also be added without departing from the novel features disclosed herein. Figure 1 , 2 The apparatus, device, and / or component described in any of 7, 8, and 12 may be configured to perform one or more of the methods, features, or steps described herein. The novel algorithms described herein may also be efficiently implemented in software and / or embedded in hardware.

[0325] It should be understood that the specific order or hierarchy of the steps in the disclosed methods is an illustration of the exemplary process. Based on design preferences, it will be understood that the specific order or hierarchy of the steps in these methods can be rearranged. The appended method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy presented, unless specifically stated herein.

[0326] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will readily be understood by those skilled in the art, and the universal principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be granted the full scope consistent with the language of the claims, wherein references to the singular form of an element are not intended to mean “one and only one”—unless specifically stated otherwise—but are intended to mean “one or more.” Unless specifically stated otherwise, the term “some / a” refers to one or more. The phrase “at least one of” referring to a list of items refers to any combination of these items, including a single member. As an example, “at least one of a, b, or c” is intended to cover: a; b; c; a and b; a and c; b and c; and a, b, and c. All structural and functional equivalents of the aspects described throughout this disclosure that are currently or hereafter known to a person skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended to be donated to the public, whether or not such disclosure is expressly stated in the claims.

Claims

1. A network entity, comprising: transceiver; Memory; as well as One or more processors coupled to the transceiver and the memory, wherein the one or more processors are individually or collectively configured to: The transceiver transmits multiple Probe Reference Signal (SRS) configurations to the user equipment, the multiple SRS configurations being defined as maintaining phase continuity across multiple SRS transmissions associated with multiple time-separated SRS timings; During a first SRS timing of the plurality of SRS timings, a first SRS transmission of the plurality of SRS transmissions is received from the user equipment via the transceiver. During the second SRS timing of the plurality of SRS timings, the second SRS transmission of the plurality of SRS transmissions is received from the user equipment via the transceiver. as well as The first SRS transmission and the second SRS transmission are processed together to generate an SRS estimate.

2. The network entity of claim 1, wherein each of the plurality of SRS configurations specifies at least one of the following: identical spatial relationship information, identical uplink transmission configuration indicator status, identical transmission comb, identical number of SRS ports, identical frequency domain position in the same bandwidth portion, identical frequency hopping parameters, identical transmit power, or a combination thereof.

3. The network entity as claimed in claim 1, wherein the plurality of SRS configurations includes a first SRS configuration for the first SRS transmission and a second SRS configuration for the second SRS transmission.

4. The network entity as described in claim 3, wherein: The first SRS configuration specifies the first set of spatial relationship information; The second SRS configuration specifies a second set of spatial relationship information; as well as The first set of spatial relationship information and the second set of spatial relationship information specify at least one of the following: the same serving cell identifier, the same synchronization signal block index, the same channel state information reference signal index, the same SRS resource identifier, the same uplink bandwidth portion, or a combination thereof.

5. The network entity as described in claim 3, wherein: The first SRS configuration specifies the first uplink transmission configuration indicator (TCI) state; and The second SRS configuration specifies the state of the first uplink transmission configuration indicator (TCI).

6. The network entity as described in claim 3, wherein: The first SRS configuration specifies at least one of the following: a first number of ports, a first transmission comb value, a first frequency domain position, a first frequency hopping configuration value, a first SRS bandwidth and a first SRS frequency hopping bandwidth, a first transmit power configuration, or a combination thereof; as well as The second SRS configuration specifies at least one of the following: the first number of ports, the first transmission comb value, the first frequency domain position, the first frequency hopping configuration value, the first SRS bandwidth and the first SRS frequency hopping bandwidth, the first transmit power configuration, or a combination thereof.

7. The network entity as described in claim 3, wherein: The one or more processors are further configured individually or collectively to transmit at least one downlink control information (DCI) to the user equipment via the transceiver; The at least one DCI specifies a first resource for the first SRS timing and a second resource for the second SRS timing; and The at least one DCI specifies that the user equipment shall configure the first SRS for the first SRS transmission during the first SRS timing and that the user equipment shall configure the second SRS for the second SRS transmission during the second SRS timing.

8. The network entity of claim 1, wherein the one or more processors are further configured individually or collectively to: Specify the same parameter values ​​for the multiple SRS configurations.

9. The network entity of claim 1, wherein the one or more processors are further configured individually or collectively to: Define the multiple SRS configurations.

10. The network entity of claim 1, wherein the one or more processors are further configured individually or collectively to: Capability information is received from the user equipment via the transceiver, wherein the capability information indicates that the user equipment supports maintaining phase continuity across different SRS transmissions for different SRS timings; and Upon receiving the capability information, an instruction is transmitted to the user equipment via the transceiver, wherein the instruction is to configure the user equipment to maintain phase continuity across the first SRS transmission and the second SRS transmission.

11. The network entity of claim 1, wherein the one or more processors are further configured individually or collectively to: The first SRS transmission and the second SRS transmission are combined to provide a combined SRS transmission, wherein a first weight is associated with the first SRS transmission and a second weight is associated with the second SRS transmission; and The combined SRS transmission is processed to generate the SRS estimate.

12. The network entity of claim 1, wherein the one or more processors are further configured individually or collectively to: Process the first SRS transmission to provide a first SRS estimate; Process the second SRS transmission to provide a second SRS estimate; and The first SRS estimate and the second SRS estimate are combined to generate the SRS estimate, wherein a first weight is associated with the first SRS transmission and a second weight is associated with the second SRS transmission.

13. The network entity of claim 1, wherein the one or more processors are further configured individually or collectively to: The determination to jointly process the plurality of SRS transmissions is based on at least one of the following: whether the user equipment is near the cell edge of the serving cell of the user equipment, whether the channel quality between the user equipment and the network entity is less than a threshold quality, whether the signal-to-noise ratio associated with the user equipment is less than a threshold signal-to-noise ratio, or a combination thereof.

14. A method for wireless communication at a network entity, the method comprising: Multiple probe reference signal (SRS) configurations are transmitted to user equipment, wherein the multiple SRS configurations are defined as maintaining phase continuity across multiple SRS transmissions associated with multiple time-separated SRS timings. During a first SRS timing of the plurality of SRS timings, a first SRS transmission of the plurality of SRS transmissions is received from the user equipment. During the second SRS timing of the plurality of SRS timings, a second SRS transmission of the plurality of SRS transmissions is received from the user equipment. as well as The first SRS transmission and the second SRS transmission are processed together to generate an SRS estimate.

15. A user equipment comprising: transceiver; Memory; as well as One or more processors coupled to the transceiver and the memory, wherein the one or more processors are individually or collectively configured to: The transceiver receives a first resource allocation for scheduling a first SRS transmission for a first SRS timing for a first SRS signal detection reference signal (SRS) transmission and a first SRS configuration for the first SRS transmission. The transceiver receives a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission, wherein the first SRS timing and the second SRS timing are time-separated. The transceiver receives an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; as well as After verifying whether using the first SRS configuration and the second SRS configuration will maintain the phase continuity across the first SRS transmission and the second SRS transmission, the first SRS transmission is transmitted via the transceiver during the first SRS timing and the second SRS transmission is transmitted during the second SRS timing.

16. The user equipment of claim 15, wherein the one or more processors are further configured individually or collectively to: It is determined that using the first SRS configuration and the second SRS configuration will maintain the phase continuity across the first SRS transmission and the second SRS transmission.

17. The user equipment of claim 16, wherein the one or more processors are further configured individually or collectively to: The transceiver transmits the first SRS transmission according to the first SRS configuration and transmits the second SRS transmission according to the second SRS configuration, thereby maintaining the phase continuity across the first SRS transmission and the second SRS transmission.

18. The user equipment of claim 17, wherein the one or more processors are further configured individually or collectively to: The first SRS transmission and the second SRS transmission maintain substantially the same phase continuity.

19. The user equipment of claim 15, wherein the one or more processors are further configured individually or collectively to: It is determined that using the first SRS configuration and the second SRS configuration will not maintain the phase continuity across the first SRS transmission and the second SRS transmission.

20. The user equipment of claim 19, wherein the one or more processors are further configured individually or collectively to: The transceiver transmits the first SRS transmission according to the first SRS configuration and transmits the second SRS transmission according to the second SRS configuration, and suppresses the phase continuity across the first SRS transmission and the second SRS transmission.

21. The user equipment of claim 19, wherein the one or more processors are further configured individually or collectively to: The first SRS transmission is transmitted via the transceiver and the second SRS transmission is transmitted via the transceiver, thereby maintaining the phase continuity across the first SRS transmission and the second SRS transmission.

22. The user equipment of claim 15, wherein the one or more processors are further configured individually or collectively to: Determine whether the first SRS configuration and the second SRS configuration specify at least one of the following: the same spatial relationship information, the same uplink transmission configuration indicator status, the same transmission comb, the same number of SRS ports, the same frequency domain position in the same bandwidth portion, the same frequency hopping parameters, the same transmit power, or a combination thereof.

23. The user equipment as claimed in claim 15, wherein: The first SRS configuration specifies the first set of spatial relationship information; The second SRS configuration specifies a second set of spatial relationship information; and The one or more processors are further configured individually or collectively to determine whether the first set of spatial relationship information and the second set of spatial relationship information specify at least one of the following: the same serving cell identifier, the same synchronization signal block index, the same channel state information reference signal index, the same SRS resource identifier, the same uplink bandwidth portion, or a combination thereof.

24. The user equipment as claimed in claim 15, wherein, To verify whether using the first SRS configuration and the second SRS configuration will maintain the phase continuity across the first SRS transmission and the second SRS transmission, the one or more processors are further individually or collectively configured to determine at least one of the following: whether the first SRS configuration specifies a first uplink transmission configuration indicator state, whether the first SRS configuration specifies a first number of ports, whether the first SRS configuration specifies a first transmission comb value, whether the first SRS configuration specifies a first frequency domain location, whether the first SRS configuration specifies a first frequency hopping configuration value, whether the first SRS configuration specifies a first SRS bandwidth and a first SRS frequency hopping bandwidth, whether the first SRS configuration specifies a first transmit power configuration, or a combination thereof.

25. The user equipment as claimed in claim 24, wherein, To verify whether using the first SRS configuration and the second SRS configuration will maintain the phase continuity across the first SRS transmission and the second SRS transmission, the one or more processors are further configured individually or collectively to determine at least one of the following: whether the second SRS configuration specifies the first uplink transmission configuration indicator state, whether the second SRS configuration specifies the first number of ports, whether the second SRS configuration specifies the first transmission comb value, whether the second SRS configuration specifies the first frequency domain position, whether the second SRS configuration specifies the first frequency hopping configuration value, whether the second SRS configuration specifies the first SRS bandwidth and the first SRS frequency hopping bandwidth, whether the second SRS configuration specifies the first transmit power configuration, or a combination thereof.

26. The user equipment of claim 15, wherein the one or more processors are further configured individually or collectively to: The transceiver transmits capability information to the network entity, wherein the capability information indicates that the user equipment supports maintaining phase continuity across different SRS transmissions for different SRS times; and The instruction is received via the transceiver after the capability information is transmitted.

27. The user equipment as claimed in claim 15, wherein: The one or more processors are further configured individually or collectively to receive at least one downlink control information (DCI) from a network entity via the transceiver; as well as The at least one DCI specifies that the user equipment shall configure the first SRS for the first SRS transmission during the first SRS timing and that the user equipment shall configure the second SRS for the second SRS transmission during the second SRS timing.

28. The user equipment of claim 15, wherein the one or more processors are further configured individually or collectively to: The transceiver receives the Media Access Control-Control Element (MAC-CE) including the instruction.

29. The user equipment as claimed in claim 15, wherein: The first SRS timing corresponds to at least one first time slot; and The second SRS timing corresponds to at least one second time slot, which is different from the at least one first time slot.

30. A method for wireless communication at a user equipment location, the method comprising: Receive a first resource allocation for scheduling a first SRS transmission for a first SRS timing of a first probe reference signal SRS transmission and a first SRS configuration for the first SRS transmission. Receive a second resource allocation for scheduling a second SRS transmission for a second SRS timing and a second SRS configuration for the second SRS transmission, wherein the first SRS timing and the second SRS timing are time-separated; Receive an indication to maintain phase continuity across the first SRS transmission and the second SRS transmission; as well as After verifying whether using the first SRS configuration and the second SRS configuration will maintain the phase continuity across the first SRS transmission and the second SRS transmission, the first SRS transmission is transmitted during the first SRS timing and the second SRS transmission is transmitted during the second SRS timing.

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