Multi-beam technology for small data transmission on pre-configured uplink resources

Abstract

Wireless communication techniques including multi-beam technology for small data transmission (SDT) on preconfigured uplink resources (PUR) are discussed. When the UE does not have an RRC connection with a base station, the UE can receive an indication of at least one PUR allocated for uplink communication. The at least one PUR may include one or more different PUR opportunities. The UE may also receive an indication of one or more different SSBs associated with one or more different PUR opportunities. Each of the one or more different PUR opportunities may be associated with only one SSB in one or more different SSBs. The UE may also send information to the base station during a PUR opportunity associated with an SSB that is associated with an RSRP greater than a threshold. Other aspects and features are also claimed and described.

Description

[0001] Cross-references to related technologies

[0002] This application claims the benefit of International Patent Application No. PCT / CN2020 / 107387, filed on August 6, 2020, entitled “MULTI-BEAM TECHNIQUES FOR SMALLDATA TRANSFER OVER PRECONFIGURED UPLINK RESOURCES,” the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communication systems, and more particularly to multi-beam techniques for small data transmission on preconfigured uplink resources. Certain aspects of the techniques discussed below may enable and provide enhanced communication features and techniques for communication systems, including lower power, lower latency, and lower memory usage. Background Art

[0004] Wireless communication networks are widely deployed to provide various communication services, such as voice, video, packet data, messaging, broadcast, etc. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing the available network resources. Such networks are typically multiple-access networks that support communication for multiple users by sharing the available network resources.

[0005] A wireless communication network may include multiple base stations or Node Bs that may support communication for multiple user equipments (UEs). A UE may communicate with a base station via a downlink and an uplink. A downlink (or forward link) refers to a communication link from a base station to a UE, while an uplink (or reverse link) refers to a communication link from a UE to a base station.

[0006] The base station may send data and control information to the UE on the downlink, and / or may receive data and control signals from the UE on the uplink. On the downlink, the transmission from the base station may be interfered by transmissions from neighboring base stations or from other wireless radio frequency (RF) transmitters. On the uplink, the transmission from the UE may be interfered by uplink transmissions from other UEs communicating with neighboring base stations or from other wireless RF transmitters. This interference may reduce the performance on both the downlink and uplink.

[0007] As the demand for mobile broadband access continues to increase, the potential for interference and congested networks increases as more UEs access long-range wireless communication networks and more short-range wireless systems are deployed in communities. Research and development continues to advance wireless technologies to not only meet the growing demand for mobile broadband access, but also to advance and enhance the user experience of mobile communications. Summary of the invention

[0008] The following summarizes some aspects of the present disclosure to provide a basic understanding of the technology discussed. This summary is not an extensive overview of all expected features of the present disclosure, and is neither intended to identify the key or critical elements of all aspects of the present disclosure, nor is it intended to delineate the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure in summary form as a prelude to a more detailed description presented later.

[0009] In one aspect of the present disclosure, a method for wireless communication performed by a UE is provided. For example, the method may include: when the UE is not connected to a radio resource control (RRC) of a base station, receiving an indication of at least one preconfigured uplink resource (PUR) allocated for uplink communication, wherein the at least one PUR includes one or more different PUR opportunities. The method may also include: receiving an indication of one or more different synchronization signal blocks (SSBs) associated with one or more different PUR opportunities, wherein each of the one or more different PUR opportunities is associated with only one SSB in one or more different SSBs. The method may also include: sending information during a PUR opportunity associated with an SSB, the SSB being associated with a reference signal received power (RSRP) greater than a threshold.

[0010] In another aspect of the present disclosure, a UE configured for wireless communication is provided. For example, the UE may include a component for receiving an indication of at least one preconfigured PUR allocated for uplink communication when the UE does not have an RRC connection with a base station, wherein the at least one PUR includes one or more different PUR opportunities. The UE may also include a component for receiving an indication of one or more different SSBs associated with the one or more different PUR opportunities, wherein each of the one or more different PUR opportunities is associated with only one SSB in the one or more different SSBs. The UE may also include a component for sending information during a PUR opportunity associated with an SSB, the SSB being associated with an RSRP greater than a threshold.

[0011] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is provided. The program code may include program code executable by a computer to enable the computer to receive an indication of at least one preconfigured PUR allocated for uplink communication when the UE has no RRC connection with the base station, wherein the at least one PUR includes one or more different PUR opportunities. The program code may include program code executable by a computer to enable the computer to receive an indication of one or more different SSBs associated with one or more different PUR opportunities, wherein each of the one or more different PUR opportunities is associated with only one SSB in one or more different SSBs. The program code may include program code executable by a computer to enable the computer to send information during a PUR opportunity associated with an SSB, the SSB being associated with an RSRP greater than a threshold.

[0012] In another aspect of the present disclosure, a UE is provided. The UE may include at least one processor. The UE may also include at least one memory coupled to the at least one processor in communication and storing a processor-readable code, which, when executed by the at least one processor in combination with at least one modem, is configured to: when the UE does not have an RRC connection with a base station, receive an indication of at least one preconfigured PUR allocated for uplink communication, wherein the at least one PUR includes one or more different PUR opportunities. The at least one memory may also store a processor-readable code, which, when executed by the at least one processor in combination with at least one modem, is configured to: receive an indication of one or more different SSBs associated with one or more different PUR opportunities, wherein each of the one or more different PUR opportunities is associated with only one SSB in the one or more different SSBs. The at least one memory may also store a processor-readable code, which, when executed by the at least one processor in combination with at least one modem, is configured to: send information during a PUR opportunity associated with an SSB, the SSB being associated with an RSRP greater than a threshold.

[0013] In one aspect of the present disclosure, a method for wireless communication performed by a base station is provided. For example, the method may include: when the UE does not have an RRC connection with the base station, sending an indication of at least one preconfigured PUR allocated for uplink communication, wherein the at least one PUR includes one or more different PUR opportunities. The method may also include sending an indication of one or more different SSBs associated with one or more different PUR opportunities, wherein each of the one or more different PUR opportunities is associated with only one SSB in the one or more different SSBs. The method may also include receiving information during a PUR opportunity associated with an SSB, the SSB being associated with an RSRP greater than a threshold.

[0014] In another aspect of the present disclosure, a base station configured for wireless communication is provided. For example, the base station may include: a component for sending an indication of at least one preconfigured PUR allocated for uplink communication when the UE does not have an RRC connection with the base station, wherein the at least one PUR includes one or more different PUR opportunities. The base station may also include: a component for sending an indication of one or more different SSBs associated with one or more different PUR opportunities, wherein each of the one or more different PUR opportunities is associated with only one SSB in the one or more different SSBs. The base station may also include: a component for receiving information during a PUR opportunity associated with an SSB, the SSB being associated with an RSRP greater than a threshold.

[0015] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is provided. The program code may include program code executable by a computer to cause the computer to send an indication of at least one preconfigured PUR allocated for uplink communication when the UE has no RRC connection with the base station, wherein the at least one PUR includes one or more different PUR opportunities. The program code may include program code executable by a computer to cause the computer to send an indication of one or more different SSBs associated with one or more different PUR opportunities, wherein each of the one or more different PUR opportunities is associated with only one SSB in one or more different SSBs. The program code may include program code executable by a computer to cause the computer to receive information during a PUR opportunity associated with an SSB, the SSB being associated with an RSRP greater than a threshold.

[0016] In another aspect of the present disclosure, a base station is provided. The base station may include at least one processor. The base station may also include at least one memory coupled to the at least one processor in communication and storing a processor-readable code, which, when executed by the at least one processor in combination with at least one modem, is configured to: when the UE does not have an RRC connection with the base station, send an indication of at least one preconfigured PUR allocated for uplink communication, wherein the at least one PUR includes one or more different PUR opportunities. The at least one memory may also store a processor-readable code, which, when executed by the at least one processor in combination with at least one modem, is configured to: send an indication of one or more different SSBs associated with one or more different PUR opportunities, wherein each of the one or more different PUR opportunities is associated with only one SSB in the one or more different SSBs. The at least one memory may also store a processor-readable code, which, when executed by the at least one processor in combination with at least one modem, is configured to: receive information during a PUR opportunity associated with an SSB, and the SSB is associated with an RSRP greater than a threshold.

[0017] After consulting the following description of specific exemplary embodiments in conjunction with the accompanying drawings, other aspects, features and embodiments will become clear to those of ordinary skill in the art. Although features can be discussed relative to certain aspects and figures below, all embodiments may include one or more advantageous features discussed herein. In other words, although one or more aspects may be discussed as having certain advantageous features, one or more of these features may also be used according to various aspects. In a similar manner, although exemplary aspects may be discussed below as aspects of equipment, systems or methods, exemplary aspects may be implemented in various devices, systems and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] A further understanding of the nature and advantages of the present disclosure may be achieved by reference to the following drawings. In the drawings, similar components or features may have the same reference numerals. In addition, various components of the same type may be distinguished by adding a second reference numeral after the reference numeral to distinguish between similar components. If only the first reference numeral is used in the specification, the description applies to any one of the similar components having the same first reference numeral regardless of the second reference numeral.

[0019] Figure 1 is a block diagram showing details of a wireless communication system according to some aspects of the present disclosure.

[0020] Figure 2 is a block diagram conceptually illustrating a design of a base station and a UE configured according to some aspects of the present disclosure.

[0021] Figure 3 is a block diagram illustrating a method for multi-beam support of small data transmission on pre-configured uplink resources in accordance with some aspects of the present disclosure.

[0022] Figure 4 is a diagram illustrating an example association between pre-configured uplink resources and synchronization signal blocks for providing multi-beam support for small data transmission on the pre-configured uplink resources in accordance with some aspects of the present disclosure.

[0023] Figure 5 is a block diagram illustrating another method for multi-beam support of small data transmission on pre-configured uplink resources in accordance with some aspects of the present disclosure.

[0024] Figure 6 is a block diagram conceptually illustrating a design of a UE configured according to some aspects of the present disclosure.

[0025] Figure 7 is a block diagram conceptually illustrating a design of a base station (e.g., gNB) configured according to some aspects of the present disclosure. DETAILED DESCRIPTION

[0026] The detailed description given below in conjunction with the accompanying drawings is intended to describe various configurations and is not intended to limit the scope of the present disclosure. Instead, the detailed description includes specific details in order to provide a thorough understanding of the subject matter of the present invention. It is clear to those skilled in the art that these specific details are not required in every case, and in some cases, for clarity of representation, well-known structures and components are shown in the form of block diagrams.

[0027] The present disclosure generally relates to providing or participating in authorized shared access between two or more wireless devices in one or more wireless communication systems (also referred to as wireless communication networks). In various implementations, various techniques and devices can be used for wireless communication networks, such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, fifth generation (5G) or new radio (NR) networks (sometimes referred to as "5G NR" networks / systems / devices), and other communication networks. As described herein, the terms "network" and "system" can be used interchangeably.

[0028] For example, a CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRA includes Wideband-CDMA (W-CDMA) and Low Chip Rate (LCR). CDMA2000 covers IS-2000, IS-95, and IS-856 standards.

[0029] TDMA networks can, for example, implement radio technologies such as the Global System for Mobile Communications (GSM). The Third Generation Partnership Project (3GPP) defines the standard for the GSM EDGE (Enhanced Data Rates for GSM Evolution) radio access network (RAN), also known as GERAN. GERAN is the radio component of GSM / EDGE, plus a network that connects base stations (e.g., Ater and Abis interfaces) and base station controllers (A interfaces, etc.). The radio access network represents a component of the GSM network through which phone calls and packet data are routed from the public switched telephone network (PSTN) and the Internet to subscriber handsets (also known as user terminals or user equipment (UE)), and from subscriber handsets to the public switched telephone network (PSTN) and the Internet. The network of a mobile phone operator may include one or more GERANs, which in the case of a UMTS / GSM network may be coupled to a universal terrestrial radio access network (UTRAN). In addition, the operator network may also include one or more LTE networks and / or one or more other networks. Various network types may use different radio access technologies (RATs) and radio access networks (RANs).

[0030] OFDMA network can realize radio technology such as Evolved UTRA (E-UTRA), IEEE 802.11, IEEE802.16, IEEE802.20, fast OFDM, etc. UTRA, E-UTRA and Global System for Mobile Communications (GSM) are part of Universal Mobile Telecommunication System (UMTS). In particular, Long Term Evolution (LTE) is a version of UMTS using E-UTRA. UTRA, E-UTRA, GSM, UMTS and LTE are described in documents provided by an organization named "3rd Generation Partnership Project" (3GPP), and cdma2000 is described in documents of an organization named "3rd Generation Partnership Project 2" (3GPP2). These different radio technologies and standards are known or under development. For example, 3GPP is a collaboration between a group of telecommunications associations that aims to define a globally applicable third generation (3G) mobile phone specification. 3GPP Long Term Evolution (LTE) is a 3GPP project aimed at improving the Universal Mobile Telecommunication System (UMTS) mobile phone standard. 3GPP can define the specifications for next generation mobile networks, mobile systems and mobile devices. The present disclosure may describe certain aspects with reference to LTE, 4G or 5G NR technology; however, the present description is not limited to a particular technology or application, and one or more aspects described with reference to one technology may be understood to be applicable to another technology. In fact, one or more aspects of the present disclosure relate to shared access to wireless spectrum between networks using different radio access technologies or radio air interfaces.

[0031] 5G networks take into account different deployments, different spectrums, and different services and devices that can be implemented using a unified air interface based on OFDM. To achieve these goals, in addition to developing new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also considered. 5G NR will be able to scale to provide (1) ultra-high density (e.g., about 1M nodes / km 2 ), ultra-low complexity (e.g., approximately 10 bits / second), ultra-low energy (e.g., battery life of approximately 10+ years), and massive Internet of Things (IoT) coverage with deep coverage capable of reaching challenging locations; (2) including mission-critical controls with strong security to protect sensitive personal, financial, or confidential information, ultra-high reliability (e.g., approximately 99.9999% reliability), ultra-low latency (e.g., approximately 1 millisecond (ms)), and users with extensive mobility or lack of mobility; and (3) with enhanced mobile broadband, including extremely high capacity (e.g., approximately 10Tbps / km 2 ), extremely high data rates (e.g., multi-Gbps rates, 100+Mbps user experience rates), and deep perception with advanced discovery and optimization.

[0032] 5G NR devices, networks, and systems can be implemented to use optimized OFDM-based waveform features. These features can include scalable parameter sets and transmission time intervals (TTIs); a general and flexible framework for efficiently multiplexing services and features with dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) designs; and advanced wireless technologies such as massive multiple-input multiple-output (MIMO), robust millimeter wave (mmWave) transmission, advanced channel coding and decoding, and device-centric mobility. The scalability of parameter sets in 5G NR and the scalability of subcarrier spacing can efficiently solve the problem of operating different services across different spectrums and different deployments. For example, in various outdoor and macro coverage deployments of less than 3GHz FDD / TDD implementations, the subcarrier spacing can appear at 15kHz on bandwidths such as 1, 5, 10, 20MHz, etc. For various other outdoor and small cell coverage deployments with TDD greater than 3GHz, the subcarrier spacing can appear at 30kHz on 80 / 100MHz bandwidth. For various other indoor broadband implementations, TDD is used on the unlicensed portion of the 5GHz band, and subcarrier spacing can occur at 60kHz over a 160MHz bandwidth. Finally, for various deployments that utilize mmWave components for transmission with TDD at 28GHz, subcarrier spacing can occur at 120kHz over a 500MHz bandwidth.

[0033] 5G NR's scalable parameter set facilitates scalable TTI for different latency and quality of service (QoS) requirements. For example, shorter TTI can be used for low latency and high reliability, while longer TTI can be used for higher spectral efficiency. Efficient multiplexing of long TTI and short TTI allows transmission to start on symbol boundaries. 5G NR also considers a self-contained integrated subframe design with uplink / downlink scheduling information, data, and acknowledgment in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, as well as adaptive uplink / downlink that can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet current business needs.

[0034] For clarity, certain aspects of the devices and techniques may be described below with reference to example 5G NR implementations or in a 5G-centric manner, and 5G terminology may be used as an illustrative example in portions of the description below; however, the description is not limited to 5G applications.

[0035] Furthermore, it should be understood that in operation, a wireless communication network adapted according to the concepts herein can operate with any combination of licensed or unlicensed spectrum depending on load and availability. It will therefore be apparent to one of ordinary skill in the art that the systems, devices, and methods described herein can be applied to other communication systems and applications beyond the specific examples provided.

[0036] Although various aspects and implementations are described in this application by illustrating some examples, it will be understood by those skilled in the art that additional implementations and use cases may occur in a variety of different arrangements and scenarios. The innovations described herein can be implemented across a variety of different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, embodiments and / or use cases may be implemented via integrated chip embodiments and / or other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial instruments, retail / purchase devices, medical devices, AI-enabled devices, etc.). Although some examples may or may not be specifically targeted at use cases or applications, the wide applicability of the described innovations may occur. The range of implementations can range from chip-level or modular components to non-modular, non-chip-level implementations, and further relate to aggregated, distributed, or OEM devices or systems in combination with one or more of the described aspects. In some practical settings, the device incorporating the described aspects and features must also include additional components and features for implementing and practicing the required and described embodiments. The innovations described herein may be practiced in a variety of implementations, including large / small devices of varying sizes, shapes, and configurations, chip-level components, multi-component systems (e.g., RF chains, communication interfaces, processors), distributed arrangements, end-user devices, etc.

[0037] Figure 1 1 is a block diagram illustrating details of an example wireless communication system. The wireless communication system may include a wireless network 100. The wireless network 100 may, for example, include a 5G wireless network. As will be appreciated by those skilled in the art, Figure 1 The components appearing in may have related counterparts in other network arrangements, including, for example, cellular network arrangements and non-cellular network arrangements (eg, device-to-device or peer-to-peer or ad hoc network arrangements, etc.).

[0038] Figure 1The wireless network 100 shown includes multiple base stations 105 and other network entities. A base station may be a station that communicates with a UE, and may also be referred to as an evolved Node B (eNB), a next generation eNB (gNB), an access point, etc. Each base station 105 may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a specific geographic coverage area of ​​a base station and / or a base station subsystem serving a coverage area, depending on the context in which the term is used. In the implementation of the wireless network 100 herein, the base station 105 may be associated with the same operator or different operators (e.g., the wireless network 100 may include multiple operator wireless networks). In addition, in the implementation of the wireless network 100 herein, the base station 105 may provide wireless communication using one or more frequencies (e.g., one or more frequency bands in a licensed spectrum, an unlicensed spectrum, or a combination thereof) that are the same as those of an adjacent cell. In some examples, a single base station 105 or UE 115 may be operated by more than one network operating entity. In some other examples, each base station 105 and UE 115 may be operated by a single network operating entity.

[0039] A base station may provide communication coverage for a macro cell or a small cell (such as a pico cell or a femto cell) and / or other types of cells. A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs with a service subscription with a network provider. A small cell, such as a pico cell, will typically cover a relatively small geographic area and may allow unrestricted access to UEs with a service subscription with a network provider. A small cell, such as a femto cell, will typically also cover a relatively small geographic area (e.g., a home) and, in addition to unrestricted access, may also provide restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in a home, etc.). A base station for a macro cell may be referred to as a macro base station. A base station for a small cell may be referred to as a small cell base station, a pico base station, a femto base station, or a home base station. In Figure 1 In the example shown, base stations 105d and 105e are conventional macro base stations, while base stations 105a-105c are macro base stations with one of three-dimensional (3D), full-dimensional (FD) or massive MIMO enabled. Base stations 105a-105c utilize their higher-dimensional MIMO capabilities to utilize 3D beamforming in elevation and azimuth beamforming to increase coverage and capacity. Base station 105f may be a small cell base station, which is a home node or a portable access point. The base station may support one or more (e.g., two, three, four, etc.) cells.

[0040] Wireless network 100 may support synchronous or asynchronous operation. For synchronous operation, base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time. For asynchronous operation, base stations may have different frame timing, and transmissions from different base stations may not be aligned in time. In some cases, the network may be enabled or configured to handle dynamic switching between synchronous or asynchronous operation.

[0041] UE 115 is dispersed throughout the wireless network 100, and each UE may be fixed or mobile. It should be understood that, although in the standards and specifications promulgated by 3GPP, mobile devices are generally referred to as user equipment (UE), those skilled in the art may additionally or otherwise refer to such devices as mobile stations (MS), subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals (AT), mobile terminals, wireless terminals, remote terminals, handheld devices, terminals, user agents, mobile clients, clients, gaming devices, augmented reality devices, vehicle component devices / modules, or some other suitable terms. In this document, a "mobile" device or UE does not necessarily have mobile capabilities and may be fixed. Some non-limiting examples of mobile devices may include, for example, one or more implementations of UE 115, including mobile devices, cellular phones (mobile phones), smart phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, laptop computers, personal computers (PCs), notebook computers, netbooks, smart books, tablets, and personal digital assistants (PDAs). The mobile device may also be an "Internet of Things" (IoT) or "Internet of Everything" (IoE) device, such as a car or other transportation vehicle, a satellite radio, a global positioning system (GPS) device, a logistics controller, a drone, a multi-rotor aircraft, a quadcopter, a smart energy or security device, a solar panel or solar array, municipal lighting, water supply or other infrastructure; industrial automation and enterprise equipment; consumer and wearable devices, such as glasses, wearable cameras, smart watches, health or fitness trackers, mammal implantable devices, gesture tracking devices, medical devices, digital audio players (e.g., MP3 players), cameras, game consoles, etc.; and digital home or smart home devices, such as home audio, video and multimedia devices, appliances, sensors, vending machines, smart lighting, home security systems, smart meters, etc. In one aspect, a UE may be a device including a universal integrated circuit card (UICC). In another aspect, a UE may be a device that does not include a UICC. In some aspects, a UE that does not include a UICC may also be referred to as an IoE device. Figure 1The UEs 115a-115d of the implementation shown in FIG are examples of mobile smartphone-type devices accessing the wireless network 100. A UE may also be a machine specifically configured for connected communications, including machine type communications (MTC), enhanced MTC (eMTC), narrowband Internet of Things (NB-IoT), etc. Figure 1 The UEs 115e - 115k shown in FIG. 1 are examples of various machines configured for communications accessing the wireless network 100 .

[0042] A mobile device such as UE 115 may be able to communicate with any type of base station, whether macro, pico, femto, relay, or other. Figure 1 In the figure, the communication link (represented as a lightning symbol) indicates the wireless transmission between the UE and the serving base station, or the expected transmission between the base stations, and the backhaul transmission between the base stations, which is the base station designated to serve the UE on the downlink and / or uplink. In some scenarios, the UE can operate as a base station or other network node. Backhaul communication between base stations of the wireless network 100 can occur using wired and / or wireless communication links.

[0043] In operation at the wireless network 100, base stations 105a-105c use 3D beamforming and coordinated spatial techniques such as coordinated multipoint (CoMP) or multi-connectivity to serve UEs 115a and 115b. Macro base station 105d performs backhaul communications with base stations 105a-105c and small cell base station 105f. Macro base station 105d also transmits multicast services that are subscribed to and received by UEs 115c and 115d. Such multicast services may include mobile television or streaming video, or may include other services for providing community information such as weather emergencies or alerts such as missing child alerts or violent patient alerts.

[0044] For mission-critical devices (such as UE 115e, which is a drone), various implementations of the wireless network 100 support mission-critical communications with ultra-reliable and redundant links. The redundant communication links with UE 115e include links from macro base stations 105d and 105e and small cell base station 105f. Other machine-type devices such as UE 115f (thermometer), UE 115g (smart meter), and UE 115h (wearable device) can communicate directly with base stations such as small cell base station 105f and macro base station 105e through the wireless network 100, or in a multi-hop configuration, communicate with another user device that relays its information to the network, such as UE 115f transmitting temperature measurement information to smart meter UE 115g, which then reports it to the network through small cell base station 105f. The wireless network 100 may also provide additional network efficiency through dynamic, low latency TDD / FDD communications, such as in a vehicle-to-vehicle (V2V) mesh network between UEs 115i-115k communicating with a macro base station 105e.

[0045] Figure 2 A base station 105 and a UE 115 (which may be Figure 1 1 and 1 UE). For a restricted association scenario (as described above), the base station 105 may be Figure 1 105f in the small cell base station 105f, and UE 115 may be UE 115c or 115d operating in the service area of ​​base station 105f, which will be included in the list of accessible UEs of small cell base station 105f in order to access small cell base station 105. Base station 105 may also be some other type of base station. Figure 2 As shown, the base station 105 can be equipped with antennas 234a through 234t, and the UE 115 can be equipped with antennas 252a through 252r, to facilitate wireless communications.

[0046] At the base station 105, the transmit processor 220 may receive data from the data source 212 and control information from the controller / processor 240. The control information may be used for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a hybrid ARQ (automatic repeat request) indicator channel (PHICH), a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (EPDCCH), an MTC physical downlink control channel (MPDCCH), etc. The data may be used for a PDSCH, etc. In addition, the transmit processor 220 may process (e.g., encode and symbol map) the data and the control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols, such as for a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) and a cell-specific reference signal. The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and may provide output symbol streams to modulators (MODs) 232a to 232t. For example, the spatial processing performed on the data symbols, control symbols, or reference symbols may include precoding. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may additionally or alternatively process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a to 232t may be transmitted via antennas 234a to 234t, respectively.

[0047] At the UE 115, antennas 252a to 252r may receive downlink signals from the base station 105 and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. The MIMO detector 256 may obtain received symbols from the demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. The receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 115 to the data sink 260, and provide decoded control information to the controller / processor 280.

[0048] On the uplink, at the UE 115, the transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from the controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 (if applicable), further processed by the modulators 254a through 254r (e.g., for SC-FDM, etc.), and transmitted to the base station 105. At the base station 105, the uplink signals from the UE 115 may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 115. Processor 238 may provide decoded data to a data sink 239 and may provide decoded control information to controller / processor 240 .

[0049] The controllers / processors 240 and 280 may direct the operation at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105 and / or the controller and / or processor 280 and / or other processors and modules at the UE 115 may perform or direct the execution of various processes for the techniques described herein, such as performing or directing Figure 3 and Figure 5 The execution shown, and / or other processing of the techniques described herein. Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively. Scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0050] Wireless communication systems operated by different network operating entities (e.g., network operators) may share spectrum. In some cases, a network operating entity may be configured to use the entire designated shared spectrum for at least a period of time before another network operating entity uses the entire designated shared spectrum at a different time period. Therefore, in order to allow the network operating entity to use the entire designated shared spectrum, and to mitigate interfering communications between different network operating entities, certain resources (e.g., time) may be divided and allocated to different network operating entities for certain types of communications.

[0051] For example, a network operating entity may be allocated certain time resources that are reserved for dedicated communications by the network operating entity using the entire shared spectrum. A network operating entity may also be allocated other time resources where the entity is given a higher priority than other network operating entities to use the shared spectrum for communications. If the prioritized network operating entity does not utilize these resources, the time resources prioritized for use by the network operating entity may be utilized by other network operating entities on an opportunistic basis. Additional time resources may be allocated to any network operator for use on an opportunistic basis.

[0052] Access to the shared spectrum and arbitration of time resources between different network operating entities may be centrally controlled by a separate entity, autonomously determined by a predefined arbitration scheme, or dynamically determined based on interactions between wireless nodes of the network operator.

[0053] In some cases, the UE 115 and the base station 105 may operate in a shared radio spectrum band, which may include licensed or unlicensed (e.g., contention-based) spectrum. In the unlicensed frequency portion of the shared radio spectrum band, the UE 115 or the base station 105 may traditionally perform a medium sensing process to compete for access to the spectrum. For example, the UE 115 or the base station 105 may perform a listen-before-talk or listen-before-send (LBT) process, such as a clear channel assessment (CCA), before communicating to determine whether the shared channel is available. In some implementations, the CCA may include an energy detection process to determine whether there are any other active transmissions. For example, a device may infer that a change in a received signal strength indicator (RSSI) of a power meter indicates that the channel is occupied. Specifically, a signal power concentrated in a certain bandwidth and exceeding a predetermined noise floor may indicate another wireless transmitter. CCA may also include detection of a specific sequence indicating channel usage. For example, another device may send a specific preamble before sending a data sequence. In some cases, the LBT process may include the wireless node adjusting its own backoff window based on the amount of energy detected on the channel and / or acknowledgement / negative acknowledgement (ACK / NACK) feedback for its own transmitted packets as a proxy for collisions.

[0054] In some aspects of the present disclosure, a UE (such as UE 115) and a base station (such as base station / gNB 105) may perform small data transfer (SDT) operations when the UE is in a radio resource control (RRC) idle / inactive state. For example, in some aspects, when the UE has only a small amount of data to send, the UE may send its data via a preconfigured uplink resource (PUR) without going through typical data transmission operations, which may include random access channel (RACH) operations, RRC connection establishment operations, data transmission, and RRC connection release operations. In general, a PUR may be allocated to a UE before the UE needs to send data, so that when the UE does need to send a small amount of data, the UE may do so using the PUR without first establishing an RRC connection.

[0055] Conventional SDT on PUR does not support multi-beam operation. In some cases, this may result in undesirable operation and / or less than optimal performance associated with SDT on PUR.

[0056] Aspects of the present disclosure may provide enhanced techniques for performing SDT on a PUR, such as multi-beam techniques for performing SDD on a PUR to support multi-beam operations. As an example, Figure 3 A block diagram of a method for multi-beam support of SDT on PUR according to some aspects of the present disclosure is shown. Aspects of the method 300 may be similar to those of the reference Figure 1-Figure 2 , Figure 4 and Figure 6 Various other aspects of the present disclosure described herein (such as mobile devices / UE) may be implemented together. For example, reference Figure 2 , the controller / processor 280 of UE 115 can control UE 115 to perform method 300.

[0057] like Figure 6 As shown, example blocks of method 300 will also be described with respect to UE 115 . Figure 6 1 is a block diagram conceptually illustrating a design of a UE configured according to some aspects of the present disclosure. UE 115 may include various structures, hardware, and components, such as for Figure 2 115. For example, the UE 115 includes a controller / processor 280 that operates to execute logic or computer instructions stored in a memory 282. The controller / processor 280 may also control the components of the UE 115 that provide the features and functions of the UE 115. The UE 115 sends and receives signals via wireless radios 601a-r and antennas 252a-r under the control of the controller / processor 280. The wireless radios 601a-r include various components and hardware, such as Figure 21, shown for UE 115, includes modulators / demodulators 254a-r, MIMO detector 256, receive processor 258, transmit processor 264, and TX MIMO processor 266. Controller / processor 280 may be provided with digital signals derived from sampling received analog wireless signals for controlling communication operations.

[0058] Figure 3 A method 300 is shown that may be performed by a wireless communication device such as UE 115. The method 300 includes, at block 302, receiving, by the UE, an indication of at least one PUR allocated for UE uplink communications when the UE may not have an RRC connection with a base station. Similarly, as described below with reference to Figure 5 As described, a base station such as gNB 105 may send an indication of at least one PUR allocated for UE uplink communications when the UE may not have an RRC connection with the base station. In some aspects, the at least one PUR may include one or more different PUR opportunities. At block 304, method 300 includes the UE receiving an indication of one or more different synchronization signal blocks (SSBs) associated with the one or more different PUR opportunities. Similarly, as described below with reference to Figure 5 As described, the base station may send an indication of one or more different SSBs associated with one or more different PUR opportunities. In some aspects, each of the one or more different PUR opportunities may be associated with only one SSB of the one or more different SSBs. The method 300 also includes, at block 306, the UE sending information to the base station during a PUR opportunity associated with an SSB that is associated with a reference signal received power (RSRP) greater than a threshold. Similarly, as described below with reference to Figure 5 As described, a base station such as gNB 105 may receive information during a PUR opportunity associated with an SSB that is associated with an RSRP greater than a threshold. The actions shown at blocks 302 to 306 of method 300 and the actions shown at blocks 502 to 506 of method 500 (described below) may be a subset of the overall operations performed by a UE and / or base station to provide multi-beam support for SDT on a PUR. The relationship between the actions shown at blocks 302 to 306 of method 300, the actions shown at blocks 502 to 506 of method 500, and other operations performed by a UE and / or base station to provide multi-beam support for SDT on a PUR may become apparent from the discussion of the overall operations performed by a UE and / or base station to provide multi-beam support for SDT on a PUR.

[0059] As an example, Figure 4 A diagram is shown showing an example association between a PUR and an SSB for providing multi-beam support for SDT on a PUR in accordance with some aspects of the present disclosure. Figure 4 A first PUR 402 and a second PUR 404 are shown. According to some aspects, a PUR such as PUR 402 may refer to an uplink resource that is preconfigured (e.g., allocated) to a UE before the UE has information to send. For example, a PUR may be allocated to a UE without the UE first requesting uplink resources to transmit information on the uplink. In other words, a PUR may be an uplink resource that the UE may use when it needs to send information on the uplink in the future. In some aspects, a PUR may reduce the overhead associated with uplink communications. For example, a UE may use a PUR to send a small amount of data to a base station without first establishing an RRC connection with the base station. In other words, the UE may not require an RRC connection between the UE and the base station to send information to the base station using a PUR. Therefore, when the UE remains in an RRC idle / inactive state, the UE may use a PUR to send information. In some aspects, a PUR such as PUR 402 or PUR 404 may be associated with a specific frequency and / or time resource.

[0060] According to some aspects, each PUR (such as PUR 402 or PUR 404) can include one or more different PUR opportunities. Figure 4 , PUR 402 includes PUR opportunities 412a, 412b, and 412c. Similarly, PUR 404 includes PUR opportunities 414a, 414b, and 414c. In some aspects, the PUR opportunities of a PUR may be associated with the same frequency resource. A frequency resource may refer to one or more subcarriers or a group of one or more subcarriers, such as a resource block. According to some aspects, each PUR opportunity of a PUR may be associated with a different time resource. A time resource may refer to one or more symbols or a group of one or more symbols, such as a time slot, a subframe, or a frame. For example, each of PUR opportunities 412a, 412b, and 412c may be associated with a different time resource (e.g., one or more symbols) associated with PUR 402.

[0061] like Figure 4 As shown, each PUR opportunity of the PUR can be associated with a different SSB. Figure 4 , PUR opportunity 412a is associated with SSB 422a, PUR opportunity 412b is associated with SSB 421b, and PUR opportunity 412c is associated with SSB 422c. Similarly, PUR opportunity 414a is associated with SSB 424a, PUR opportunity 414b is associated with SSB 421b, and PUR opportunity 414c is associated with SSB 422c.

[0062] In some aspects, the UE may receive an indication of at least one PUR, such as Figure 3Similarly, the base station may send an indication of at least one PUR, such as Figure 5 As shown in block 502 of FIG. 1 , at least one PUR may be allocated for UE uplink communication, so that when the UE has no RRC connection with the base station, for example, when the UE is in an RRC idle / inactive state, the UE may use the PUR for uplink communication. Figure 4 As shown, and as Figure 3 Box 302 and Figure 5 As shown in block 502 of FIG. 1 , at least one PUR, such as PUR 402 , may include one or more different PUR opportunities, such as PUR opportunities 412 a , 412 b , and 412 c .

[0063] According to some aspects, the UE may also receive an indication of one or more different SSBs associated with one or more different PUR opportunities, such as Figure 3 As shown in block 304. Similarly, Figure 5 As shown in block 504 of , the base station may send an indication of one or more different SSBs associated with one or more different PUR opportunities. In some aspects, the indication of one or more different SSBs associated with one or more different PUR opportunities may include a list of SSBs and a mapping between the SSBs and the PUR opportunities for each PUR, so that the UE may know which SSBs are associated with each PUR opportunity. For example, referring to Figure 4 , the indication of one or more different SSBs associated with one or more different PUR opportunities may indicate that SSBs 422a, 422b, and 422c are associated with PUR opportunities 412a, 412b, and 412c, respectively. Figure 4 As shown, each of the one or more different PUR opportunities may be associated with only one SSB of the one or more different SSBs.

[0064] In some aspects, the UE may process the indicated one or more different SSBs to determine a PUR opportunity for uplink communication. For example, in some aspects, the UE may measure the RSRP associated with each of the one or more different SSBs. According to some aspects, each of the one or more different SSBs may be associated with only one RSRP. In some aspects, the UE may identify at least one SSB whose associated RSRP is greater than or equal to a threshold. For reference Figure 4As an example, the UE may determine that the RSRP associated with SSB 422b and the RSRP associated with SSB 422 are both greater than or equal to a threshold. According to some aspects, the UE may select an SSB from the identified at least one SSB whose associated RSRP is greater than or equal to the threshold. In some aspects, the selected SSB may be used as a basis for UE uplink communications. For example, as described in more detail below, the UE may send information to the base station during a PUR opportunity associated with the selected SSB. For reference Figure 4 422b, for example, as a basis for UE uplink communications. According to some aspects, the UE's selection of an SSB from among at least one identified SSB whose associated RSRP is greater than or equal to a threshold may be based on various factors. For example, in one aspect, the UE may select the SSB with the strongest RSRP.

[0065] In some aspects, the UE may receive from the base station, and the base station may send to the UE, a value of a threshold value to be used by the UE in evaluating the RSRP associated with each of the one or more different SSBs. In additional aspects, the UE may know the value of the threshold value based on information provided in a wireless communication standard or specification. For example, in some aspects, information from a wireless communication standard or specification may be programmed into the UE so that the UE may know the value of the threshold value.

[0066] In some aspects, the UE may transmit information during a PUR opportunity associated with an SSB associated with an RSRP greater than or equal to a threshold, such as Figure 3 As shown in block 306 of FIG. Figure 5 As shown in block 506 of , the base station may receive information during a PUR opportunity associated with an SSB that is associated with an RSRP greater than or equal to a threshold. For example, the SSB associated with an RSRP greater than or equal to the threshold may be an SSB selected from the identified at least one SSB whose associated RSRP is greater than or equal to the threshold. Then, the PUR opportunity for sending information from the UE to the base station may be the PUR opportunity associated with the selected SSB. For reference Figure 4 As illustrated, when the UE selects SSB 422b from at least one SSB identified whose associated RSRP is greater than or equal to the threshold, the UE may send information to the base station during the PUR opportunity 412b.

[0067] According to some aspects, the UE may transmit information during a PUR opportunity using a transmit beam having a beam corresponding to a beam associated with an SSB associated with the PUR opportunity to transmit the information. For example, in one aspect, the UE may transmit information using a transmit beam that is reciprocal or nearly reciprocal to a receive beam used by the UE to receive a selected SSB. In another aspect, the UE may transmit information using a transmit beam that points in a direction or close to a beam used by a base station to transmit a selected SSB.

[0068] In some aspects, when the UE does not have an RRC connection with the base station, such as when the UE is in an RRC idle / inactive state, the UE can send information during a PUR opportunity. Similarly, when the UE does not have an RRC connection with the base station, the base station can receive information during a PUR opportunity.

[0069] In some aspects, the UE may receive an indication of a search space associated with a control resource set (CORESET), and the UE may monitor the search space for a response from the base station. Similarly, the base station may send an indication of a search space associated with a CORESET, and the UE may monitor the search space for a response from the base station. According to some aspects, the response may be in response to information sent by the UE during a PUR opportunity associated with an SSB associated with an RSRP greater than or equal to a threshold. For example, in some aspects, the response may refer to downlink control information (DCI), such as DCI provided in a PDCCH. In some aspects, the search space may be defined based on CORESET 0. For example, the base station may notify the UE in CORESET 0 that the base station will scan all beams to send a response, such as a DCI in a PDCCH. In some aspects, after receiving information from the UE during a PUR opportunity selected by the UE, the base station may send a response in the indicated search space associated with the CORESET (e.g., CORESET 0).

[0070] According to some aspects, after sending information during a selected PUR opportunity, the UE may monitor an indicated search space associated with a CORESET for a response from a base station. For example, the UE may monitor the PDCCH in the indicated search space at monitoring opportunities that are quasi-co-located (QCLed) with the SSBs associated with them. In some aspects, the UE may select a receive beam for monitoring the indicated search space based on various factors. For example, according to some aspects, the UE may monitor the indicated search space using a receive beam having a beam corresponding to the transmit beam used to send information during the selected PUR opportunity. As an example, in one aspect, the UE may monitor the indicated search space using a receive beam that is reciprocal or nearly reciprocal of the transmit beam used by the UE to send information during a PUR opportunity associated with an SSB associated with an RSRP greater than or equal to a threshold.

[0071] In some aspects, the UE may start at least one timer associated with monitoring of the indicated search space. According to some aspects, the at least one timer may include a retransmission timer and / or a round trip time (RTT) timer. When the UE uses both the RTT timer and the retransmission timer, the UE may start the RTT timer first. For example, the UE may start the RTT timer after sending information during a PUR opportunity associated with an SSB associated with an RSRP greater than or equal to a threshold. In some aspects, when the RTT timer is running, the UE may not monitor the PDCCH in the indicated search space. When the RTT timer expires, the UE may start the retransmission timer and may also start monitoring the indicated search space for a response from the base station. When the UE does not use the RTT timer, for example, the UE only uses the retransmission timer, the UE may start the retransmission timer after sending information during a PUR opportunity associated with an SSB associated with an RSRP greater than or equal to a threshold. In some aspects, the UE may monitor the indicated search space while the retransmission timer is running.

[0072] In some aspects, the UE may receive from the base station the values ​​of the retransmission timer and / or the RTT timer to be used by the UE, and the base station may send these values ​​to the UE. In additional aspects, the UE may know the values ​​of the timers based on information provided in a wireless communication standard or specification. For example, in some aspects, information from a wireless communication standard or specification may be programmed into the UE so that the UE may know the values ​​of the timers.

[0073] According to some aspects, when at least one timer (e.g., a retransmission timer and / or an RTT timer) has expired and the UE does not receive a response when monitoring the indicated search space for a response, the UE may initiate a random access channel (RACH) operation to send information to the base station. For example, if the UE does not receive any DCI in the indicated search space when at least one start timer expires, the UE may switch to a RACH-based SDT process. In additional aspects, when at least one timer expires, the UE may send information following a conventional dynamic grant / allocation process per scheduling by the base station.

[0074] In some aspects, one or more indications disclosed herein received by a UE may be included in a single configuration message received by the UE from a base station. Similarly, one or more indications disclosed herein sent by a base station may be included in a single configuration message sent by the base station to the UE. For example, in some aspects, the UE may receive from the base station in a configuration message (such as an RRC release message), and the base station may send to the UE in a configuration message (such as an RRC release message) at least one of an indication of at least one PUR, an indication of one or more different SSBs, or an indication of a search space.

[0075] As an example, Figure 5 Another method for multi-beam support for SDT on PUR according to some aspects of the present disclosure is shown. Aspects of method 500 can utilize reference Figure 1-Figure 2 , Figure 4 and Figure 7 Various other aspects of the present disclosure described herein (such as base stations / gNBs) may be implemented. For example, reference Figure 2 , the controller / processor 240 of the base station 105 can control the base station 105 to execute the method 500.

[0076] Reference will also be made to Figure 7 Base station 105 is shown depicting example blocks of method 500 . Figure 7 is a block diagram conceptually illustrating a design of a base station (e.g., gNB) configured according to some aspects of the present disclosure. The base station 105 may include various structures, hardware, and components, such as for Figure 2 The base station 105 may be configured to include those shown in FIG. 1 . For example, the base station 105 includes a controller / processor 240 that operates to execute logic or computer instructions stored in a memory 242. The controller / processor 240 may also control components of the base station 105 that provide the features and functions of the base station 105. Under the control of the controller / processor 240, the base station 105 transmits and receives signals via wireless radios 701a-t and antennas 234a-t. The wireless radios 701a-t include various components and hardware, such as Figure 21, shown for base station 105, includes modulators / demodulators 232a-t, MIMO detector 236, receive processor 238, transmit processor 220, and TX MIMO processor 230. Controller / processor 240 may be provided with digital signals derived from sampling received analog wireless signals for controlling communication operations.

[0077] Figure 5 A method 500 is shown that can be performed by a wireless communication device such as a gNB 105. The method 500 includes, at box 502, when the UE does not have an RRC connection with the base station, the base station sending an indication of at least one PUR allocated for uplink communication. In some aspects, the at least one PUR may include one or more different PUR opportunities. The method 500 also includes, at box 504, the base station sending an indication of one or more different SSBs associated with the one or more different PUR opportunities. In some aspects, each of the one or more different PUR opportunities may be associated with only one SSB of the one or more different SSBs. The method 500 also includes, at box 506, the base station receiving information during a PUR opportunity associated with an SSB that is associated with an RSRP greater than a threshold.

[0078] In some aspects, a multi-beam technique for SDT on a PUR may include a UE receiving an indication of at least one PUR allocated for uplink communications from a base station when the UE does not have an RRC connection with the base station. In some aspects, the at least one PUR may include one or more different PUR opportunities. The multi-beam technique for SDT on a PUR may also include the UE receiving an indication of one or more different SSBs associated with the one or more different PUR opportunities. In some aspects, each of the one or more different PUR opportunities may be associated with only one SSB in the one or more different SSBs. The multi-beam technique for SDT on a PUR may also include the UE sending information during a PUR opportunity associated with an SSB that is associated with an RSRP greater than a threshold.

[0079] The multi-beam technique for SDT on PUR may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other procedures described elsewhere herein.

[0080] In a first aspect, the UE may measure the RSRP associated with each of the one or more different SSBs. Each of the one or more different SSBs may be associated with only one RSRP.

[0081] In a second aspect, alone or in combination with the first aspect, the UE may identify at least one SSB whose associated RSRP is greater than a threshold.

[0082] In a third aspect, alone or in combination with one or more of the first and second aspects, the UE may select an SSB associated with a PUR opportunity, during which information is transmitted according to the identified at least one SSB.

[0083] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the UE may transmit information during a PUR opportunity using a transmit beam having a beam corresponding to a beam associated with an SSB.

[0084] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the UE may receive an indication of a search space associated with a control resource set, which the UE will monitor for a response from the base station.

[0085] In a sixth aspect, either alone or in combination with one or more of aspects 1 to 5, the UE may monitor an indicated search space associated with a control resource set for a response from a base station after sending information during a PUR opportunity, wherein the response is responsive to the sent information.

[0086] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, the UE may receive at least one of an indication of at least one PUR, an indication of one or more different SSBs, or an indication of a search space in a configuration message.

[0087] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the UE may start at least one timer associated with monitoring of the indicated search space.

[0088] In the ninth aspect, alone or in combination with one or more of the first to eighth aspects, when at least one timer has expired and the UE has not received a response in the search space indicated by the response monitoring, the UE may initiate a random access channel operation to send information.

[0089] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the UE may send information during a PUR opportunity when the UE does not have an RRC connection with a base station.

[0090] In some aspects, a multi-beam technique for SDT on a PUR may include a base station sending an indication of at least one PUR allocated for uplink communications when the UE does not have an RRC connection with the base station. In some aspects, the at least one PUR may include one or more different PUR opportunities. The multi-beam technique for SDT on a PUR may also include the base station sending an indication of one or more different SSBs associated with the one or more different PUR opportunities. In some aspects, each of the one or more different PUR opportunities may be associated with only one SSB in the one or more different SSBs. The multi-beam technique for SDT on a PUR may also include the base station receiving information during a PUR opportunity associated with an SSB that is associated with an RSRP greater than a threshold.

[0091] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the base station may send an indication of a search space associated with a control resource set, and the UE will monitor the search space for a response from the base station.

[0092] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the base station may send a response in an indicated search space associated with the control resource set after receiving the information during the PUR opportunity.

[0093] In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the base station may send at least one of an indication of at least one PUR, an indication of one or more different SSBs, or an indication of a search space in a configuration message.

[0094] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the base station may send information during a PUR opportunity when the UE does not have an RRC connection with the base station.

[0095] Those skilled in the art will appreciate that information and signals may be represented using any of a variety of different techniques and multiple technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips referenced throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0096] The components, functional blocks and modules described herein (eg, Figure 2 The components, modules and functional blocks in the present invention may include processors, electronic devices, hardware devices, electronic components, logical circuits, memories, software codes, firmware codes, etc. or any combination thereof. In addition, the features discussed herein may be implemented via dedicated processor circuits, via executable instructions and / or a combination thereof.

[0097] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps (e.g., Figure 3 and Figure 5 The logic blocks in the system) can be implemented as electronic hardware, computer software, or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been generally described above with respect to their functionality. Whether such functions are implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. A skilled person can implement the described functions in different ways for each specific application, but such implementation decisions should not be interpreted as causing deviations from the scope of the present disclosure. A skilled person will also easily recognize that the order or combination of components, methods, or interactions described herein are only examples, and the components, methods, or interactions of various aspects of the present disclosure can be combined or performed in a manner different from that shown and described herein.

[0098] The various illustrative logical blocks, modules, and circuits described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0099] The steps of the method or algorithm described in conjunction with the disclosure herein can be directly embodied in hardware, a software module executed by a processor, or a combination of the two. The software module can reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative, the storage medium may be indispensable to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and the storage medium may reside in a user terminal as discrete components.

[0100] In one or more exemplary designs, the functions described can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, these functions can be stored or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, including any medium that facilitates the transfer of computer programs from one place to another. Computer-readable storage media can be any available medium that can be accessed by a general or special-purpose computer. As an example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices or any other medium that can be used to carry or store the required program code components in the form of instructions or data structures and can be accessed by a general or special-purpose computer or a general or special-purpose processor. In addition, the connection can be appropriately referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair or digital subscriber line (DSL) is used to transmit software from a website, server or other remote source, the coaxial cable, fiber optic cable, twisted pair or DSL are included in the definition of the medium. As used herein, disks and optical disks include compact disks (CDs), laser disks, optical disks, digital versatile disks (DVDs), hard disks, solid state disks, and Blu-ray disks, where disks typically reproduce data magnetically, while optical disks reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0101] As used herein, including in the claims, the term "and / or," when used in a list of two or more items, means that any one of the listed items may be used alone or in any combination of the two or more listed items may be used. For example, if a composition is described as containing components A, B, and / or C, the composition may contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination. Furthermore, as used herein, including in the claims, "or" used in a list of items ending with "at least one of" means a disjunctive list, for example, a list of "at least one of A, B, or C" means A or B or C or AB or AC or BC or ABC (i.e., A, B, and C) or any combination thereof.

[0102] The previous description of the disclosure is provided to enable those skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Therefore, the disclosure is not intended to be limited to the examples and designs described herein, but to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication performed by a user equipment UE, comprising: receiving, when the UE has no radio resource control (RRC) connection with a network entity, an indication of at least one preconfigured uplink resource (PUR) allocated for uplink communication from the network entity, wherein the at least one PUR comprises one or more different PUR opportunities; receiving an indication of one or more different synchronization signal blocks SSB respectively associated with one or more different PUR opportunities; transmitting information during a first PUR opportunity associated with a first SSB among the one or more different SSBs in the one or more different PUR opportunities, the first SSB being associated with a reference signal received power RSRP greater than a threshold; receiving an indication of a search space associated with a set of control resources that the UE is to monitor for a response from a network entity; and After sending the information during the first PUR opportunity, a search space associated with the set of control resources is monitored for a response from a network entity, wherein the response is associated with the information sent during the first PUR opportunity.

2. The method according to claim 1, further comprising: measuring a respective RSRP associated with each of the one or more different SSBs; as well as In association with the first SSB having an associated RSRP greater than a threshold, the first SSB is selected from the one or more different SSBs.

3. The method according to claim 1, wherein: The information transmitted during the first PUR opportunity is transmitted using a transmit beam having a beam corresponding to the beam associated with the first SSB.

4. The method according to claim 1, further comprising: At least one of an indication of at least one PUR, an indication of one or more different SSBs, or an indication of a search space associated with a control resource set that the UE is to monitor for a response from the network entity is received in the configuration message.

5. The method according to claim 1, further comprising: starting at least one timer associated with monitoring of the search space; as well as In association with the UE not receiving the response before expiration of the at least one timer, a random access channel operation is initiated to send information.

6. The method according to claim 1, wherein: The information sent during the first PUR opportunity is sent when the UE does not have an RRC connection with the network entity.

7. The method according to claim 1, wherein: An indication of one or more different SSBs associated with one or more different PUR opportunities provides an indication of multiple different SSBs associated with multiple different PUR opportunities, wherein each of the multiple different PUR opportunities is associated with only one SSB of the multiple different SSBs, and wherein the association between the multiple different PURs and the multiple different SSBs is configured for multi-beam support for small data transmission (SDT) on the PUR.

8. The method according to claim 1, wherein: A receive beam having a beam corresponding to a beam used to transmit information during the first PUR opportunity is used to monitor a search space associated with the control resource for a response from the network entity.

9. The method according to claim 5, further comprising: After sending the information during the first PUR opportunity, starting a first timer of the at least one timer; After the first timer expires, starting a second timer of the at least one timer; and In association with the UE not receiving the response before the second timer expires, a random access channel operation is initiated to send information.

10. A user equipment UE, comprising: at least one processor; as well as at least one memory communicatively coupled to the at least one processor and storing processor readable code that, when executed by the at least one processor in conjunction with the at least one modem, is configured to: receiving, when the UE has no radio resource control (RRC) connection with a network entity, an indication of at least one preconfigured uplink resource (PUR) allocated for uplink communication from the network entity, wherein the at least one PUR comprises one or more different PUR opportunities; receiving an indication of one or more different synchronization signal blocks SSB respectively associated with one or more different PUR opportunities; transmitting information during a first PUR opportunity associated with a first SSB among the one or more different SSBs in the one or more different PUR opportunities, the first SSB being associated with a reference signal received power RSRP greater than a threshold; receiving an indication of a search space associated with a set of control resources that the UE is to monitor for a response from a network entity; and After sending the information during the first PUR opportunity, a search space associated with the set of control resources is monitored for a response from a network entity, wherein the response is associated with the information sent during the first PUR opportunity.

11. The UE of claim 10, wherein the at least one memory further stores processor readable code, which when executed by at least one processor in conjunction with at least one modem, is configured to: measuring a respective RSRP associated with each of the one or more different SSBs; as well as In association with the first SSB having an associated RSRP greater than a threshold, the first SSB is selected from the one or more different SSBs.

12. The UE according to claim 10, wherein: The information transmitted during the first PUR opportunity is transmitted using a transmit beam having a beam corresponding to the beam associated with the first SSB.

13. The UE of claim 10, wherein the at least one memory further stores processor-readable code, which, when executed by the at least one processor in conjunction with the at least one modem, is configured to: receive in a configuration message at least one of an indication of at least one PUR, an indication of one or more different SSBs, or an indication of a search space associated with a control resource set that the UE will monitor for a response from a network entity.

14. The UE of claim 10, wherein the at least one memory further stores processor readable code, which when executed by at least one processor in conjunction with at least one modem, is configured to: starting at least one timer associated with monitoring of the search space; and In association with the UE not receiving the response before expiration of the at least one timer, a random access channel operation is initiated to send information.

15. The UE according to claim 10, wherein: The information sent during the first PUR opportunity is sent when the UE does not have an RRC connection with the network entity.

16. The UE according to claim 10, wherein: An indication of one or more different SSBs associated with one or more different PUR opportunities provides an indication of multiple different SSBs associated with multiple different PUR opportunities, wherein each of the multiple different PUR opportunities is associated with only one SSB of the multiple different SSBs, and wherein the association between the multiple different PURs and the multiple different SSBs is configured for multi-beam support for small data transmission (SDT) on the PUR.

17. The UE according to claim 10, wherein: A receive beam having a beam corresponding to a beam used to transmit information during the first PUR opportunity is used to monitor a search space associated with the control resource for a response from the network entity.

18. The UE of claim 14, wherein the at least one memory further stores processor readable code, which when executed by at least one processor in conjunction with at least one modem, is configured to: After sending the information during the first PUR opportunity, starting a first timer of the at least one timer; After the first timer expires, starting a second timer of the at least one timer; and In association with the UE not receiving the response before the second timer expires, a random access channel operation is initiated to send information.

19. A method for wireless communication performed by a network entity, comprising: sending, when the UE has no radio resource control (RRC) connection with a network entity, an indication of at least one preconfigured uplink resource (PUR) allocated for uplink communication, wherein the at least one PUR comprises one or more different PUR opportunities; sending an indication of one or more different synchronization signal blocks SSB respectively associated with one or more different PUR opportunities; receiving information during a first PUR opportunity associated with a first SSB among the one or more different SSBs, the first SSB being associated with a reference signal received power RSRP greater than a threshold, among the one or more different PUR opportunities; sending an indication of a search space associated with the set of control resources that the UE is to monitor for a response from the network entity; and After receiving the information during the first PUR opportunity, a response is sent in the search space associated with the control resource set.

20. The method according to claim 19, further comprising: At least one of an indication of at least one PUR, an indication of one or more different SSBs, or an indication of a search space associated with a control resource set that the UE is to monitor for a response from the network entity is sent in the configuration message.

21. The method according to claim 19, wherein: The information received during the first PUR occasion is received when the UE does not have an RRC connection with the network entity.

22. The method according to claim 19, wherein: An indication of one or more different SSBs associated with one or more different PUR opportunities provides an indication of multiple different SSBs associated with multiple different PUR opportunities, wherein each of the multiple different PUR opportunities is associated with only one SSB of the multiple different SSBs, and wherein the association between the multiple different PURs and the multiple different SSBs is configured for multi-beam support for small data transmission (SDT) on the PUR.

23. The method according to claim 19, wherein: An indication of at least one PUR is sent without the network entity receiving a UE request for uplink resources.

24. The method of claim 19, further comprising: The value of at least one timer associated with the UE's monitoring of the search space is transmitted, wherein the value of the at least one timer is configured for the UE to initiate a random access channel operation to transmit information.

25. A network entity, comprising: at least one processor; as well as at least one memory communicatively coupled to the at least one processor and storing processor readable code that, when executed by the at least one processor in conjunction with the at least one modem, is configured to: sending, when the UE has no radio resource control (RRC) connection with a network entity, an indication of at least one preconfigured uplink resource (PUR) allocated for uplink communication, wherein the at least one PUR comprises one or more different PUR opportunities; sending an indication of one or more different synchronization signal blocks SSB respectively associated with one or more different PUR opportunities; receiving information during a first PUR opportunity associated with a first SSB among the one or more different SSBs, the first SSB being associated with a reference signal received power RSRP greater than a threshold, among the one or more different PUR opportunities; sending an indication of a search space associated with the set of control resources that the UE is to monitor for a response from the network entity; and After receiving the information during the first PUR opportunity, a response is sent in the search space associated with the control resource set.

26. The network entity according to claim 25, further comprising: The at least one memory also stores processor readable code which, when executed by the at least one processor in conjunction with the at least one modem, is configured to send in a configuration message at least one of an indication of at least one PUR, an indication of one or more different SSBs, or an indication of a search space associated with a control resource set that the UE will monitor for a response from a network entity.

27. The network entity according to claim 25, wherein: The information received during the first PUR occasion is received when the UE does not have an RRC connection with the network entity.

28. The network entity according to claim 25, wherein: An indication of one or more different SSBs associated with one or more different PUR opportunities provides an indication of multiple different SSBs associated with multiple different PUR opportunities, wherein each of the multiple different PUR opportunities is associated with only one SSB of the multiple different SSBs, and wherein the association between the multiple different PURs and the multiple different SSBs is configured for multi-beam support for small data transmission (SDT) on the PUR.

29. The network entity according to claim 25, wherein: An indication of at least one PUR is sent without the network entity receiving a UE request for uplink resources.

30. The network entity of claim 25, the at least one memory further storing processor readable code that, when executed by at least one processor in conjunction with at least one modem, is configured to: sending a value of at least one timer associated with monitoring of a search space by the UE, wherein The value of the at least one timer is configured for the UE to initiate a random access channel operation to send information.

31. A user equipment UE, comprising: means for receiving, from a network entity when the UE has no Radio Resource Control, RRC, connection with the network entity, an indication of at least one preconfigured uplink resource, PUR, allocated for uplink communication, wherein the at least one PUR comprises one or more different PUR opportunities; means for receiving an indication of one or more different synchronization signal blocks SSB respectively associated with one or more different PUR opportunities; means for transmitting information during a first PUR opportunity associated with a first SSB among the one or more different SSBs, the first SSB being associated with a reference signal received power RSRP greater than a threshold value, among the one or more different PUR opportunities; means for receiving an indication of a search space associated with a set of control resources that the UE is to monitor for a response from a network entity; and Means for monitoring a search space associated with a set of control resources for a response from a network entity after sending information during a first PUR opportunity, wherein the response is associated with the information sent during the first PUR opportunity.

32. A network entity comprising: means for sending an indication of at least one preconfigured uplink resource PUR allocated for uplink communication when the UE has no radio resource control, RRC, connection with a network entity, wherein the at least one PUR comprises one or more different PUR opportunities; means for sending an indication of one or more different synchronization signal blocks SSB respectively associated with one or more different PUR opportunities; means for receiving information during a first PUR opportunity associated with a first SSB among the one or more different SSBs, the first SSB being associated with a reference signal received power, RSRP, greater than a threshold value, among the one or more different PUR opportunities; means for sending an indication of a search space associated with a set of control resources that the UE is to monitor for a response from a network entity; and Means for sending a response in a search space associated with a set of control resources after receiving information during a first PUR opportunity.

33. A computer-readable medium storing code for wireless communication performed by a user equipment (UE), the code comprising instructions which, when executed by a processor, cause the processor to perform the method according to any one of claims 1-9.

34. A computer readable medium storing code for wireless communication performed by a network entity, the code comprising instructions which, when executed by a processor, cause the processor to perform the method according to any one of claims 19-24.

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