Standalone Sidelink for Industrial Internet of Things (IIOT)

Abstract

Wireless communication systems and methods related to independent sidelink communication are provided. A first user equipment (UE) sends a sidelink system information signal including an indication of a first preconfigured profile among a plurality of preconfigured profiles. The first UE transmits a first sidelink transmission with a second UE based at least in part on the first preconfigured profile.

Description

Technical Field

[0001] The present application relates to wireless communication systems, and more particularly, to standalone sidelink communications for the Industrial Internet of Things (IIOT). Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, etc. These systems may be capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). A wireless multiple-access communication system may include multiple base stations (BSs), each of which simultaneously supports communication for multiple communication devices, which may also be referred to as user equipment (UE).

[0003] In order to meet the growing demand for extended mobile broadband connectivity, wireless communication technology is developing from long term evolution (LTE) technology to next generation new radio (NR) technology (which may be referred to as the 5th generation (5G)). For example, compared with LTE, NR is designed to provide lower latency, higher bandwidth or higher throughput and higher reliability. NR is designed to operate on a variety of spectrum bands (e.g., from low frequency bands below about 1 gigahertz (GHz) and mid-frequency bands from about 1 GHz to about 6 GHz, to high frequency bands such as millimeter wave (mm wave) bands). NR is also designed to operate across different spectrum types, from licensed spectrum to unlicensed spectrum and shared spectrum. Spectrum sharing enables operators to opportunistically aggregate spectrum to dynamically support high bandwidth services. Spectrum sharing can extend the benefits of NR technology to operating entities that may not have access to licensed spectrum.

[0004] In a wireless communication network, a BS can communicate with a UE in both the uplink and downlink directions. Sidelinks were introduced in LTE to allow a UE to send data to another UE without tunneling through a BS and / or an associated core network. LTE sidelink technology has been extended to provide device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, and / or cellular vehicle-to-everything (C-V2X) communication. Similarly, NR can be extended to support sidelink communications for D2D, V2X, and / or C-V2X on dedicated spectrum, licensed spectrum, and / or unlicensed spectrum. In addition, the NR sidelink can be extended to support applications in other verticals, such as IIoT. Summary of the invention

[0005] The following summarizes some aspects of the present disclosure to provide a basic understanding of the technology discussed. This summary is not a general review of all expected features of the present disclosure, and is neither intended to identify key or important elements of all aspects of the present disclosure, nor is it intended to describe 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 the form of an overview as a preface to a more detailed description presented later.

[0006] For example, in one aspect of the present disclosure, a method of wireless communication performed by a first user equipment (UE) includes: sending a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles; and transmitting a first sidelink transmission with a second UE based at least in part on the first preconfigured profile.

[0007] In an additional aspect of the present disclosure, a method of wireless communication performed by a first user equipment (UE) includes: receiving a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles from a second UE; and transmitting a first sidelink transmission based at least in part on the first preconfigured profile.

[0008] In additional aspects of the present disclosure, a user equipment (UE) includes: a transceiver configured to: send a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles; and transmit a first sidelink transmission with a second UE based at least in part on the first preconfigured profile.

[0009] In additional aspects of the present disclosure, a user equipment (UE) includes: a transceiver configured to: receive a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles from a second UE; and transmit a first sidelink transmission based at least in part on the first preconfigured profile.

[0010] In an additional aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon, the program code comprising: code for causing a first user equipment (UE) to send a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles; and code for causing the first UE to transmit a first sidelink transmission with a second UE based at least in part on the first preconfigured profile.

[0011] In an additional aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon includes: code for causing a first user equipment (UE) to receive a sidelink system information signal including an indication of a first preconfigured profile of a plurality of preconfigured profiles from a second UE; and code for causing the first UE to transmit a first sidelink transmission based at least in part on the first preconfigured profile.

[0012] In additional aspects of the present disclosure, a first user equipment (UE) includes: a unit for sending a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles; and a unit for transmitting a first sidelink transmission with a second UE based at least in part on the first preconfigured profile.

[0013] In additional aspects of the present disclosure, a first user equipment (UE) includes: a unit for receiving a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles from a second UE; and a unit for transmitting a first sidelink transmission based at least in part on the first preconfigured profile.

[0014] When reviewing the following description of specific exemplary embodiments of the present invention in conjunction with the accompanying drawings, other aspects, features and embodiments of the present invention will become apparent to those skilled in the art. Although features of the present invention may be discussed below with respect to certain embodiments and accompanying drawings, all embodiments of the present invention may include one or more of the advantageous features discussed herein. In other words, although one or more embodiments may be discussed as having certain advantageous features, one or more of such features may also be used according to the various embodiments of the present invention discussed herein. In a similar manner, although exemplary embodiments may be discussed below as device, system or method embodiments, it should be understood that such exemplary embodiments may be implemented in various devices, systems and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A wireless communication network in accordance with some aspects of the present disclosure is shown.

[0016] Figure 2 An Industrial Internet of Things (IIoT) deployment according to some aspects of the present disclosure is shown.

[0017] Figure 3 Sidelink radio resource allocation and communication schemes according to some aspects of the present disclosure are shown.

[0018] Figure 4 A sidelink communication scheme according to some aspects of the present disclosure is shown.

[0019] Figure 5 A sidelink communication scheme according to some aspects of the present disclosure is shown.

[0020] Figure 6 is a signaling diagram illustrating a sidelink communication method according to some aspects of the present disclosure.

[0021] Figure 7 is a block diagram of an example controller user equipment (UE) according to some aspects of the present disclosure.

[0022] Figure 8 is a block diagram of an exemplary non-controller UE according to some aspects of the present disclosure.

[0023] Fig. 9 is a flow chart of a sidelink communication method according to some aspects of the present disclosure.

[0024] Fig.10 is a flow chart of a sidelink communication method according to some aspects of the present disclosure. DETAILED DESCRIPTION

[0025] The specific embodiments described below in conjunction with the accompanying drawings are intended to be descriptions of various configurations and are not intended to represent the only configurations in which the concepts described herein can be practiced. For the purpose of providing a thorough understanding of various concepts, the specific embodiments include specific details. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0026] The present disclosure generally relates to wireless communication systems (also referred to as wireless communication networks). In various embodiments, the techniques and apparatus may 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, global system for mobile communications (GSM) networks, 5th generation (5G) or new radio (NR) networks, and other communication networks. As described herein, the terms "network" and "system" may be used interchangeably.

[0027] OFDMA network can realize radio technology such as Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11, IEEE 802.16, IEEE 802.20, Flash-OFDM, etc. UTRA, E-UTRA and GSM are part of Universal Mobile Telecommunications System (UMTS). Specifically, 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 from an organization named "3rd Generation Partnership Project 2" (3GPP2). These various radio technologies and standards are known or are being developed. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration between telecommunication association groups with the goal of defining a globally applicable third generation (3G) mobile phone specification. 3GPP Long Term Evolution (LTE) is a 3GPP plan with the goal of improving UMTS mobile phone standards. 3GPP may define specifications for next generation mobile networks, mobile systems, and mobile devices. The present disclosure relates to the evolution of wireless technology from LTE, 4G, 5G, NR and beyond with shared access to wireless spectrum between networks using some new and different radio access technologies or radio air interfaces.

[0028] 5G networks are expected to enable diverse deployments, diverse spectrum, and diverse services and devices using a unified air interface based on OFDM. To achieve these goals, in addition to the development of new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also being considered. 5G NR will be able to expand to provide: (1) Coverage for massive IoT with ultra-high density (e.g., ~1M nodes / km) 2 (1) providing coverage with ultra-low complexity (e.g., ~10s of bits / second), ultra-low energy (e.g., ~10+ years of battery life), and deep coverage with the ability to reach challenging locations; (2) including coverage for mission-critical control with strong security for protecting sensitive personal, financial, or confidential information, ultra-high reliability (e.g., ~99.9999% reliability), ultra-low latency (e.g., ~1 ms), and for users with a wide range of mobility or lack of mobility; and (3) providing coverage with enhanced mobile broadband, including very high capacity (e.g., ~10Tbps / km 2 ), extreme data rates (e.g., multi-Gbps rates, 100+Mbps user experience rates), and deep perception with improved discovery and optimization.

[0029] 5G NR can be implemented using an optimized OFDM-based waveform with a scalable numerology and transmission time interval (TTI); a common flexible structure to efficiently multiplex services and features using a dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) design; and improved wireless technologies such as massive multiple-input multiple-output (MIMO), robust millimeter wave (mmWave) transmission, improved channel coding, and device-centric mobility. The scalability of the digital scheme in 5GNR (with scaling of subcarrier spacing) can efficiently address the operation of diverse services across diverse spectrums and diverse deployments. For example, in various outdoor and macro coverage deployments of less than 3GHz FDD / TDD implementations, the subcarrier spacing can appear at 15kHz, for example, on 5, 10, 20MHz and similar bandwidths (BW). For other various outdoor and small cell coverage deployments of TDD greater than 3GHz, the subcarrier spacing can appear at 30kHz on 80 / 100MHz BW. For various other indoor broadband implementations using TDD on the unlicensed portion of the 5 GHz band, subcarrier spacing may occur at 60 kHz over 160 MHz BW. Finally, for various deployments transmitting with mm-wave components at 28 GHz TDD, subcarrier spacing may occur at 120 kHz over 500 MHz BW.

[0030] 5G NR's scalable digital scheme facilitates scalable TTI for diverse latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of long and short TTIs allows transmissions to start on symbol boundaries. 5G NR also anticipates a self-contained integrated subframe design with UL / downlink scheduling information, data, and acknowledgment in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, and adaptive UL / downlink that can be flexibly configured on a per-cell basis to dynamically switch between UL and downlink to meet current business needs.

[0031] The various other aspects and features of the present disclosure are further described below. It should be apparent that the teachings herein can be embodied in a variety of forms, and any specific structure, function, or both disclosed herein are only representative and non-limiting. Based on the teachings herein, it should be understood by those skilled in the art that the aspects disclosed herein can be implemented independently of any other aspects, and two or more of these aspects can be combined in various ways. For example, using any number of aspects set forth herein, a device can be implemented or a method can be practiced. In addition, using other structures, functions, or structures and functions other than one or more aspects set forth herein or different from these aspects, such a device can be implemented, or such a method can be practiced. For example, a method can be implemented as a part of a system, device, device, and / or as an instruction stored on a computer-readable medium to be executed on a processor or computer. In addition, an aspect can include at least one element of a claim.

[0032] Sidelink communication refers to communication between user equipment devices (UE) without tunneling through a base station (BS) and / or a core network. Sidelink communication can be transmitted on a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH). PSCCH and PSSCH are similar to the physical downlink control channel (PDCCH) and the physical downlink shared channel (PDSCH) in the downlink (DL) communication between the BS and the UE. For example, the PSCCH can carry sidelink control information (SCI), and the PSSCH can carry sidelink data (e.g., user data). Each PSCCH is associated with a corresponding PSSCH, wherein the SCI in the PSCCH can carry reservation and / or scheduling information for sidelink data transmission in the associated PSSCH. Use cases for sidelink communication may include V2X, enhanced mobile broadband (eMBB), industrial IoT (IIoT), and / or NR-lite.

[0033] NR supports two radio resource allocation (RRA) modes for sidelinks on licensed spectrum, namely Mode 1 RRA and Mode 2 RRA. Mode 1 RRA supports network-controlled RRA, which can be used for coverage-inside sidelink communications. For example, the serving BS (e.g., gNB) can determine radio resources on behalf of the sidelink UE and send an indication of the radio resources to the sidelink UE. Mode 2 RRA supports autonomous RRA, which can be used for coverage-outside sidelink UEs or partially covered sidelink UEs. For example, the coverage-outside sidelink UE or partially covered UE can be pre-configured with a sidelink resource pool, and radio resources for sidelink communications can be selected from the pre-configured sidelink resource pool. There can be multiple ways in which pre-configuration for the sidelink resource pool can occur. For example, the sidelink UE can receive a pre-configuration for the sidelink resource pool from the BS when it is within the coverage of the BS, and the pre-configuration can be applied when the sidelink UE is outside the coverage of the BS. In some other instances, for example, a manufacturer or operator may configure the sidelink UE with a pre-configuration for the sidelink resource pool before deploying the UE. Typically, the sidelink UE may receive a pre-configuration for the sidelink resource pool before starting Mode 2 RRA operation. For this mode, the sidelink system may operate independently of the serving BS.

[0034] In the IIoT scenario, a factory or production plant may include machines, industrial equipment, sensors, actuators, robots, etc., operating in an assembly line and / or production line. Machines, industrial equipment, sensors, actuators, and / or robots may generally be referred to as sensor / actuator (S / A) devices. A production plant may use a programmable logic controller (PLC) to control the operation of the S / A devices, for example, by sending control commands to the S / A devices and reading data, recording, and / or measuring from the S / A devices. It may be desirable for the PLC to communicate with the S / A devices via a wireless channel, for example, using a sidelink. However, a production plant may typically operate in a shielded environment and may therefore be outside the coverage of a BS.

[0035] Although Mode 2 RRA can support sidelink communications without a serving BS, Mode 2 RRA operation may lack flexibility for IIoT deployments. For example, a production plant may have different clusters of S / A devices controlled by different PLCs. Communications in different clusters may have different Quality of Service (QoS) requirements. In addition, some S / A devices may be relocated to different areas in the plant, for example, due to maintenance or other changes in the production line, and therefore, the S / A devices may be controlled by different PLCs over time. Therefore, it is desirable to provide a more flexible independent sidelink system.

[0036] The present application describes a mechanism for providing a flexible independent sidelink system for IIoT deployment. For example, an independent system can be formed so that a sidelink UE group can communicate with each other through a sidelink when not in the coverage of a serving BS. One or more sidelink UEs in the group can be configured to act as a coordinator or controller of the sidelink communication in the system, wherein the one or more sidelink UEs can be referred to as controller UEs. Other sidelink UEs in the group can be referred to as non-controller UEs. The controller UE can broadcast system information associated with the independent system to assist non-controller UEs in participating in the sidelink communication. Different controller UEs (e.g., located in different locations) can coordinate and / or control different non-controller UE clusters of sidelink communication. In some aspects, the independent sidelink system can be located in a shielded production plant, including a PLC that coordinates and / or controls the operation of S / A equipment. The PLC and / or S / A equipment can be equipped with a wireless communication device. In order to facilitate the sidelink communication in the production plant, one or more PLCs can be configured to act as controller UEs, and the S / A equipment can be configured to act as non-controller UEs. The PLC acting as a controller UE can be referred to as a PLC UE. An S / A device acting as a non-controller UE may be referred to as an S / A UE.

[0037] In some aspects, each S / A UE may be preconfigured with, for example, a plurality of preconfigured profiles stored at a memory of the S / A UE. There may be a variety of ways in which the sidelink UE may be preconfigured with a preconfigured profile. For example, the sidelink UE may be preconfigured with a preconfigured profile by a manufacturer during manufacturing or by an operator before deployment. Typically, the sidelink UE may be preconfigured with a preconfigured profile before the sidelink UE begins to listen to the sidelink broadcast system information. The preconfigured profile may include information about the operating band and / or sidelink resource pool in which the S / A UE may send and / or receive sidelink transmissions. The PLC UE may broadcast system information to indicate which preconfigured profile the S / A UE may use for sidelink communication. For example, the PLC UE may send a physical sidelink broadcast channel (PSBCH) signal including an indication of a first preconfigured profile in a plurality of preconfigured profiles. The PSBCH may be similar to a PBCH on a Uu interface (e.g., an interface between a BS and a UE). In some aspects, the indication may be an index that references a first preconfigured profile. For example, multiple pre-configuration profiles can be indexed according to a certain index order. In some other aspects, the indication can be a regional identifier (ID) identifying the first pre-configuration profile. For example, a geographic area can be divided into multiple regions (e.g., with a certain length and a certain width), each region can be assigned a region ID, the region ID can be a numerical value or a string, and each region can have an associated pre-configuration profile. The pre-configuration profile can include at least one of a frequency band configuration (e.g., indicating a carrier frequency, a bandwidth part (BWP)) or a radio resource configuration (e.g., indicating a transmission resource pool and / or a reception resource pool and associated congestion control). Therefore, the S / A UE can monitor the PSBCH signal from the PLC UE, and can select a pre-configuration profile from a plurality of pre-configuration profiles stored at the S / AUE after detecting the PSBCH signal.

[0038] In some aspects, the PLC UE may also send a sidelink remaining minimum system information (RMSI) signal including an additional radio resource management (RRM) configuration, for example, to provide more flexible and / or more advanced radio resource allocation. In some instances, the PSBCH signal may also include a sidelink RMSI pointer, which points to a resource where the S / A UE can decode the sidelink RMSI scheduling information for the sidelink RMSI signal. In some aspects, the RRM configuration may override the region configuration in the first preconfigured profile, wherein the RRM configuration may include at least one of geographic coordinate information, region length, region width, or region to resource pool mapping. In some aspects, the RRM configuration may override the congestion control configuration in the first preconfigured profile, wherein the RRM configuration may include at least one of a channel busy ratio (CBR) or a channel access occupancy ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile. In some aspects, the RRM configuration may indicate one or more resource pools different from the preconfigured resource pool indicated by the first preconfigured profile. In some aspects, the RRM configuration may define different congestion control parameters for different QoS target levels for each of the one or more resource pools. In some aspects, the RRM configuration may indicate an abnormal transmission resource pool, where the S / A UE may access based on some rules instead of normal SCI sensing (e.g., determining whether the resource is a reserved basic SCI).

[0039] In some aspects, once the S / A UE is synchronized to the PSBCH signal, it is expected that the S / A UE operates according to the pre-configured profile indicated by the PSBCH signal. In some aspects, once the S / A UE successfully decodes the RMSI signal, it is expected that the S / A UE operates according to the RRM configuration. However, in some instances, when the S / A UE does not have a unicast connection with the PLC UE, the S / A UE can comply with the RRM configuration within a certain duration, and can fall back to the pre-configured profile after the duration. In some aspects, the S / A UE can establish a unicast connection for sidelink communication with the PLC UE, and the RRM configuration can be complied with as long as the unicast connection is maintained. In some aspects, when the S / A UE has a unicast connection established with the PLC UE, the PLC UE can configure the S / A UE with a dedicated resource pool.

[0040] Various aspects of the present disclosure may provide several benefits. For example, storing multiple preconfigured profiles at the S / A UE and including a profile indication in the broadcast system information may provide the PLC UE with the flexibility to select a preconfigured profile without incurring high signaling overhead. For example, the PSBCH signal may carry a sidelink master information block (MIB), which may have a limited number of bits, and the profile indication may be represented by a few bits in the sidelink MIB (e.g., approximately 2 bits to support 4 preconfigured profile options). In addition, including additional RMSI may provide more advanced and / or more flexible sidelink resource allocation and / or congestion control. Although the present disclosure is described in the context of deploying independent sidelink communications for IIoT applications, the disclosed embodiments may be applied to any appropriate sidelink application operating in an independent sidelink system. In addition, the disclosed embodiments may be applied to sidelinks on any appropriate frequency band (e.g., in an unlicensed spectrum and / or a licensed spectrum).

[0041] Figure 1 A wireless communication network 100 is shown according to some aspects of the present disclosure. The network 100 may be a 5G network. The network 100 includes a plurality of base stations (BSs) 105 (labeled 105a, 105b, 105c, 105d, 105e, and 105f, respectively) and other network entities. The BS 105 may be a station that communicates with the UE 115, and may also be referred to as an evolved Node B (eNB), a next generation eNB (gNB), an access point, etc. Each BS 105 may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to the particular geographic coverage area of ​​the BS 105 and / or the BS subsystem serving the coverage area, depending on the context in which the term is used.

[0042] BS105 can provide communication coverage for macro cells or small cells (such as pico cells or femto cells) and / or other types of cells. Macro cells generally cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UEs with service subscriptions with a network provider. Small cells (such as pico cells) will generally cover a relatively small geographic area and can allow unrestricted access by UEs with service subscriptions with a network provider. Small cells (such as femto cells) will also generally cover a relatively small geographic area (e.g., a residence) and, in addition to unrestricted access, can also provide restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in a residence, etc.). A BS for a macro cell may be referred to as a macro BS. A BS for a small cell may be referred to as a small cell BS, a pico BS, a femto BS, or a home BS. In Figure 1 In the example shown in , BS105d and 105e may be conventional macro BSs, while BS105a-105c may be macro BSs implemented with one of three-dimensional (3D) MIMO, full-dimensional (FD) MIMO, or massive MIMO. BS105a-105c may utilize its higher-dimensional MIMO capabilities to utilize 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacity. BS105f may be a small cell BS, which may be a home node or a portable access point. BS105 may support one or more (e.g., two, three, four, etc.) cells.

[0043] Network 100 may support synchronous operation or asynchronous operation. For synchronous operation, the BSs may have similar frame timing, and transmissions from different BSs may be approximately aligned in time. For asynchronous operation, the BSs may have different frame timing, and transmissions from different BSs may not be aligned in time.

[0044] UE 115 is scattered throughout the wireless network 100, and each UE 115 can be stationary or mobile. UE 115 can also be referred to as a terminal, a mobile station, a user unit, a station, etc. UE 115 can be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a wireless local loop (WLL) station, etc. In one aspect, UE 115 can be a device including a universal integrated circuit card (UICC). In another aspect, UE 115 can be a device that does not include a UICC. In some aspects, UE 115 that does not include a UICC can also be referred to as an IoT device or an Internet of Everything (IoE) device. UE 115a-115d is an example of a mobile smart phone type device accessed to the network 100. UE 115 can also be a machine that is specially configured for connected communications (including machine type communications (MTC), enhanced MTC (eMTC), narrowband IoT (NB-IoT), etc.). UE 115e-115h are examples of various machines configured for communication that access network 100. UE 115i-115k are examples of vehicles equipped with wireless communication devices configured for communication that access network 100. UE 115 may be able to communicate with any type of BS (whether macro BS, small cell, etc.). Figure 1 , lightning (e.g., communication link) indicates wireless transmission between UE 115 and serving BS 105 (which is a BS designated to serve UE 115 on downlink (DL) and / or uplink (UL)), or expected transmission between BS 105, backhaul transmission between BSs, or sidelink transmission between UE 115.

[0045] In operation, BS105a-105c can use 3D beamforming and coordinated spatial techniques (e.g., coordinated multi-point (CoMP) or multi-connectivity) to serve UEs 115a and 115b. Macro BS105d can perform backhaul communications with BS105a-105c and small cell BS105f. Macro BS105d can also send multicast services that are subscribed to and received by UEs 115c and 115d. Such multicast services may include mobile TV or streaming video, or may include other services for providing community information, for example, weather emergencies or alerts, such as Amber Alerts or Gray Alerts.

[0046] The base stations 105 may also communicate with a core network. The core network may provide user authentication, access grant, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. At least some of the base stations 105 (e.g., which may be examples of gNBs or access node controllers (ANCs)) may interface with the core network via a backhaul link (e.g., NG-C, NG-U, etc.), and may perform radio configuration and scheduling for communications with the UE 115. In various examples, the BSs 105 may communicate with each other directly or indirectly (e.g., via a core network) via a backhaul link (e.g., X1, X2, etc.) (which may be a wired or wireless communication link).

[0047] The network 100 may also support mission-critical communications with ultra-reliable and redundant links for mission-critical devices (e.g., UE 115e, which may be a drone). The redundant communication links with UE 115e may include links from macro BSs 105d and 105e and links from small cell BS 105f. Other machine-type devices, such as UE 115f (e.g., a thermometer), UE 115g (e.g., a smart meter), and UE 115h (e.g., a wearable device), may communicate directly with a BS (e.g., small cell BS 105f and macro BS 105e) through the network 100, or communicate through the network 100 in a multi-step configuration by communicating with another user device that relays its information to the network, such as UE 115f transmitting temperature measurement information to the smart meter (UE 115g), which is then reported to the network through the small cell BS 105f. The network 100 may also provide additional network efficiency through dynamic, low-latency TDD / FDD communications, such as V2V, V2X, C-V2X communications between UE 115i, 115j, or 115k and other UEs 115, and / or vehicle-to-infrastructure (V2I) communications between UE 115i, 115j, or 115k and BS 105.

[0048] In some implementations, the network 100 communicates using an OFDM-based waveform. An OFDM-based system can divide the system BW into multiple (K) orthogonal subcarriers, which are also commonly referred to as subcarriers, tones, frequency bands, etc. Each subcarrier can be modulated with data. In some instances, the subcarrier spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system BW. The system BW can also be divided into subbands. In other instances, the subcarrier spacing and / or the duration of the TTI can be scalable.

[0049] In some aspects, BS105 may assign or schedule transmission resources (e.g., in the form of time-frequency resource blocks (RBs)) for downlink (DL) and uplink (UL) transmissions in network 100. DL refers to the transmission direction from BS105 to UE 115, and UL refers to the transmission direction from UE 115 to BS105. Communication may be in the form of radio frames. Radio frames may be divided into a plurality of subframes or time slots, e.g., about 10. Each time slot may be further divided into micro-time slots. In FDD mode, simultaneous UL and DL transmissions may occur in different frequency bands. For example, each subframe includes a UL subframe in a UL frequency band and a DL subframe in a DL frequency band. In TDD mode, UL and DL transmissions using the same frequency band occur at different time periods. For example, a subset of subframes in a radio frame (e.g., DL subframes) may be used for DL ​​transmissions, while another subset of subframes in the radio frame (e.g., UL subframes) may be used for UL transmissions.

[0050] DL subframes and UL subframes may be further divided into several regions. For example, each DL or UL subframe may have a predefined region for transmitting reference signals, control information, and data. A reference signal is a predetermined signal that facilitates communication between BS105 and UE 115. For example, a reference signal may have a specific pilot pattern or structure, wherein a pilot tone may traverse an operating BW or frequency band, and each pilot tone may be located at a predefined time and a predefined frequency. For example, BS105 may send a cell-specific reference signal (CRS) and / or a channel state information-reference signal (CSI-RS) to enable UE 115 to estimate a DL channel. Similarly, UE 115 may send a sounding reference signal (SRS) to enable BS105 to estimate an UL channel. Control information may include resource assignments and protocol control. Data may include protocol data and / or operational data. In some aspects, BS105 and UE 115 may communicate using a self-contained subframe. A self-contained subframe may include a portion for DL ​​communication and a portion for UL communication. A self-contained subframe may be DL-centric or UL-centric. A DL-centric subframe may include a longer duration for DL ​​communications than for UL communications. A UL-centric subframe may include a longer duration for UL communications than for UL communications.

[0051] In some aspects, the network 100 may be an NR network deployed on a licensed spectrum. The BS 105 may send synchronization signals (e.g., including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS)) in the network 100 to facilitate synchronization. The BS 105 may broadcast system information associated with the network 100 (e.g., including a master information block (MIB), remaining minimum system information (e.g., RMSI), and other system information (OSI)) to facilitate initial network access. In some instances, the BS 105 may broadcast the PSS, SSS, and / or MIB on a physical broadcast channel (PBCH) in the form of a synchronization signal block (SSB), and may broadcast the RMSI and / or OSI on a physical downlink shared channel (e.g., PDSCH).

[0052] In some aspects, a UE 115 attempting to access the network 100 may perform an initial cell search by detecting the PSS from the BS 105. The PSS may enable synchronization of period timing and may indicate a physical layer identification value. The UE 115 may then receive the SSS. The SSS may enable radio frame synchronization and may provide a cell identification value, which may be combined with the physical layer identification value to identify the cell. The PSS and SSS may be located in the center portion of the carrier or in any suitable frequency within the carrier.

[0053] After receiving the PSS and SSS, the UE 115 may receive the MIB. The MIB may include system information for initial network access and scheduling information for RMSI and / or OSI. After decoding the MIB, the UE 115 may receive the RMSI and / or OSI. The RMSI and / or OSI may include radio resource control (RRC) information related to random access channel (RACH) procedures, paging, control resource set (CORESET) for physical downlink control channel (PDCCH) monitoring, physical UL control channel (PUCCH), physical UL shared channel (PUSCH), power control, and SRS.

[0054] After obtaining the MIB, RMSI and / or OSI, the UE 115 may perform a random access procedure to establish a connection with the BS 105. In some examples, the random access procedure may be a four-step random access procedure. For example, the UE 115 may send a random access preamble, and the BS 105 may respond with a random access response. The random access response (RAR) may include a detected random access preamble identifier (ID) corresponding to the random access preamble, timing advance (TA) information, UL grant, temporary cell radio network temporary identifier (C-RNTI), and / or a fallback indicator. After receiving the random access response, the UE 115 may send a connection request to the BS 105, and the BS 105 may respond with a connection response. The connection response may indicate contention resolution. In some examples, the random access preamble, RAR, connection request, and connection response may be referred to as message 1 (MSG1), message 2 (MSG2), message 3 (MSG3), and message 4 (MSG4), respectively. In some examples, the random access procedure may be a two-step random access procedure, where the UE 115 may send a random access preamble and a connection request in a single transmission, and the BS 105 may respond by sending a random access response and a connection response in a single transmission.

[0055] After establishing the connection, UE 115 and BS 105 may enter a normal operation phase, in which operational data may be exchanged. For example, BS 105 may schedule UE 115 for UL and / or DL ​​communications. BS 105 may send UL and / or DL ​​scheduling grants to UE 115 via PDCCH. Scheduling grants may be sent in the form of DL control information (DCI). BS 105 may send DL communication signals (e.g., carrying data) to UE 115 via PDSCH according to the DL scheduling grant. UE 115 may send UL communication signals to BS 105 via PUSCH and / or PUCCH according to the UL scheduling grant.

[0056] In some aspects, BS105 can communicate with UE 115 using HARQ technology to improve communication reliability, for example, to provide URLLC service. BS105 can schedule UE 115 to perform PDSCH communication by sending DL grant in PDCCH. BS105 can send DL data packets to UE 115 in PDSCH according to scheduling. DL data packets can be sent in the form of transport blocks (TBs). If UE 115 successfully receives DL data packets, UE 115 can send HARQ ACK to BS105. On the contrary, if UE 115 fails to successfully receive DL transmission, UE 115 can send HARQ NACK to BS105. After receiving HARQ NACK from UE 115, BS105 can retransmit DL data packets to UE 115. Retransmission can include the same coded version of DL data as initial transmission. Alternatively, retransmission can include coded version of DL data different from initial transmission. The UE 115 may apply soft combining to combine the coded data received from the initial transmission and the retransmission for decoding.The BS 105 and the UE 115 may also apply HARQ to UL communications using a substantially similar mechanism as DL HARQ.

[0057] In some aspects, the network 100 may operate on a system BW or a component carrier (CC) BW. The network 100 may divide the system BW into multiple BWPs (e.g., parts). The BS 105 may dynamically assign the UE 115 to operate on a specific BWP (e.g., a specific part of the system BW). The assigned BWP may be referred to as an active BWP. The UE 115 may monitor the active BWP for signaling information from the BS 105. The BS 105 may schedule the UE 115 to perform UL or DL ​​communications in the active BWP. In some aspects, the BS 105 may assign a pair of BWPs within the CC to the UE 115 for UL and DL communications. For example, the BWP pair may include a BWP for UL communication and a BWP for DL ​​communication.

[0058] In some aspects, network 100 may operate on a shared channel, which may include a shared frequency band and / or an unlicensed frequency band. For example, network 100 may be an NR-U network operating on an unlicensed frequency band. In such aspects, BS105 and UE 115 may be operated by multiple network operation entities. In order to avoid conflicts, BS105 and UE 115 may use a listen-before-talk (LBT) process to monitor transmission opportunities (TXOPs) in a shared channel. TXOP may also be referred to as COT. For example, a transmitting node (e.g., BS105 or UE 115) may perform LBT before transmitting in a channel. When LBT passes, the transmitting node may continue to transmit. When LBT fails, the transmitting node may avoid transmitting in the channel.

[0059] LBT can be based on energy detection (ED) or signal detection. For LBT based on energy detection, when the signal energy measured from the channel is lower than the threshold, the result of LBT is passed. On the contrary, when the signal energy measured from the channel exceeds the threshold, the result of LBT is failure. For LBT based on signal detection, when a channel reservation signal (e.g., a predetermined preamble signal) is not detected in the channel, the result of LBT is passed. In addition, LBT can adopt multiple modes. The LBT mode can be, for example, Category 4 (CAT4) LBT, Category 2 (CAT2) LBT, or Category 1 (CAT1) LBT. CAT1 LBT is called LBT-free mode, in which LBT is not performed before transmission. CAT2 LBT refers to LBT without a random backoff period. For example, a transmitting node can determine a channel measurement in a time interval and determine whether the channel is available based on a comparison of the channel measurement with the ED threshold. CAT4 LBT refers to LBT with random backoff and a variable contention window (CW). For example, a transmitting node can extract a random number and back off for a duration within a certain time unit based on the extracted random number.

[0060] In some aspects, the network 100 can support sidelink communications between UEs 115 on a shared radio frequency band (e.g., in a shared spectrum or an unlicensed spectrum). In some aspects, the UEs 115 can communicate with each other on a 2.4 GHz unlicensed band that can be shared by multiple network operating entities using various radio access technologies (RATs) such as NR-U, WiFi, and / or licensed assisted access (LAA). In some other aspects, the network 100 can support sidelink communications between UEs 115 in a licensed band.

[0061] In some aspects, UE 115 may be outside the coverage of BS 105, but may desire to communicate with another UE 115 using a sidelink. As described above, NR supports Mode 2 RRA, which is an autonomous RRA mode that relies on preconfiguration at UE 115. Preconfiguration can provide some basic settings for Mode 2 RRA operation. There are multiple ways in which preconfiguration can occur. For example, the sidelink UE 115 can receive a preconfiguration from BS 105 when it is within the coverage of BS 105, and the preconfiguration can be applied when the sidelink UE 115 is outside the coverage of BS 105. In some other instances, for example, a manufacturer or operator can configure the sidelink UE 115 with a preconfiguration before deploying the UE 115.

[0062] Preconfiguration may include a transmit resource pool configuration, a receive resource pool configuration, and / or a regional configuration. The transmit resource pool configuration may configure radio resources (e.g., time-frequency resources) that may be used by the sidelink UE 115 for transmission. In order to avoid conflicts, the sidelink UE 115 may perform sensing in the transmit resource pool before accessing the resources in the transmit resource pool. Sensing may include SCI monitoring. For example, another sidelink UE 115 may indicate a reservation for sidelink resources in the SCI, and therefore, the sidelink UE 115 may determine whether the sidelink resources in the transmit resource pool have been reserved based on the SCI monitoring. In some instances, preconfiguration may also specify rules for congestion control in the transmit resource pool. For example, if the CBR or CR associated with the transmit resource pool is exceeded, the UE 115 may not be allowed to utilize the transmit resource pool. The receive resource pool configuration may configure radio resources (e.g., time-frequency resources) that may be used by the sidelink UE 115 for reception. The sidelink UE 115 may perform SCI monitoring in the receive resource pool to determine whether another sidelink UE 115 may have data for the sidelink UE 115. In some instances, the transmit resource pool may overlap with the receive resource pool. In some instances, the transmit resource pool and / or the receive resource pool may be in an unlicensed spectrum band, such as a 5 GHz band, a 6 GHz band, and / or an intelligent transmission system (ITS) band. The spectrum band may have any suitable BW. In some instances, the spectrum band may have a BW of approximately 75 MHz or less. The spectrum band may be divided into multiple sub-bands having a BW of approximately 20 MHz, and each sidelink resource may be within a sub-band. This will be described below in conjunction with Figure 3 Mechanisms for configuring and / or utilizing sidelink resource pools are discussed more fully.

[0063] To further avoid conflicts, a resource allocation mechanism based on geographic regions can be used. For example, a resource pool (e.g., a sending resource pool or a receiving resource pool) can be divided based on geographic regions. For example, a certain part of the resource pool can be used by one region, and another part of the resource pool can be used by another region. The regional configuration can define the geographic coordinates, regional width and / or regional length of the region. The size or granularity of the region may change according to the area (area) or region (region) of the deployment. The regional configuration can also define the mapping between the resources in the region and the resource pool. For example, each region can be associated with a regional identifier (ID), and each part in the resource pool can be configured for a specific regional ID. The sidelink UE 115 (e.g., UE 115j) can be a vehicle and can be equipped with a global positioning system (GPS), and is therefore able to determine the region to which the sidelink UE 115 belongs and determine the resources mapped to the corresponding region.

[0064] In some aspects, network 100 can support IIoT communication. For example, some UE 115 (e.g., UE 115f-h) can be part of a production plant. The production plant can operate in a shielded environment, where wireless communication signals from outside the production plant may not penetrate into the production plant. In other words, the UE 115 in the production plant may be outside the coverage of any BS105. Therefore, the UE 115 in the production plant can form an independent sidelink system and communicate with each other through the sidelink. In the production plant, some UE 115 in UE 115 can correspond to machines, industrial equipment, sensors, actuators, robots, etc. equipped with wireless communication equipment, and can be referred to as S / A UE. Some other UE 115 in the UE 115 in the production plant can correspond to PLCs equipped with wireless communication equipment and can be referred to as PLC UEs. PLC UE 115 can control the operation of S / A UE 115. For example, the PLC UE 115 may send control commands to the S / A UE 115 and may read data, records, and / or measurements from the S / A UE 115. In some instances, the S / A UEs 115 may also communicate with each other.

[0065] In some aspects, in order to promote the communication between PLC UE 115 and S / AUE 115, PLC UE 115 can act as a sidelink controller. For example, PLC UE 115 can, for example, broadcast sidelink system information in PSBCH (which is similar to PBCH between BS105 and UE 115). In some aspects, PSBCH signal can include sidelink MIB, and sidelink MIB includes system configuration information for sidelink communication. In order to provide the flexibility of system configuration without significantly increasing signaling overhead, S / A UE 115 can be pre-configured with multiple preconfiguration profiles, and PSBCH signal can include the indication of quoting a certain preconfiguration profile. In some aspects, reference can be an index, for example, quoting the first preconfiguration profile in multiple preconfiguration profiles. In some other aspects, reference can be a regional index quoting the first preconfiguration profile in multiple preconfiguration profiles. Each preconfiguration profile in the preconfiguration profile can include regional configuration and / or radio resource configuration (for example, for sending resource pool and / or receiving resource pool). Thus, the S / A UE 115 may monitor the PSBCH from the PLC UE 115 and may select a preconfigured profile from a plurality of preconfigured profiles stored at the S / A UE 115 based on an indication in the detected PSBCH signal. In some aspects, the PLC UE 115 may also broadcast a synchronization signal (e.g., similar to the PSS and / or SSS) to assist the S / A UE 115 in synchronizing to the PLC UE 115. Thus, the S / A UE 115 may monitor the synchronization signal from the PLC UE 115 and synchronize to the PLC UE 115. For example, the S / A UE 115 may synchronize to the timing of the PLC UE 115.

[0066] In some aspects, PLC UE 115 can also cover some parameters in the first pre-configuration profile. For example, a PSBCH signal or a sidelink MIB may include a pointer to a sidelink RMSI. The pointer may point to a resource (e.g., RB) in which the sidelink RMSI may be received. The sidelink RMSI may include parameters associated with the regional definition, resource pool configuration, and / or congestion control mechanism defined in the first pre-configuration profile, respectively. The sidelink RMSI may provide a configuration for an additional resource pool with various congestion control parameters and / or QoS parameters. Additionally or alternatively, the sidelink RMSI may provide a configuration for an abnormal transmission resource pool. In a common or normal resource pool, S / A UE 115 may, for example, perform SCI sensing within a continuous period of time to determine that the resources in the normal resource pool are available for transmission. In an abnormal resource pool, S / A UE 115 may access resources without performing sensing or based on partial sensing (e.g., performing sensing in a shortened duration).

[0067] In some aspects, S / A UE 115 can also establish a unicast connection with PLC UE 115 for communication. The unicast connection can be a layer 2 connection (e.g., a medium access control (MAC) layer connection). In some aspects, after establishing the unicast connection, the PLC UE 115 can configure the connected S / A UE 115 with a dedicated resource pool. The configuration can be in the form of an RRC message on a PC5 interface. The PC5 interface can refer to an interface between two sidelink UEs 115. The resources in the dedicated resource pool can be dedicated to the unicast connection between the PLC UE 115 and the S / A UE 115. Congestion control in the dedicated resource pool can utilize a dedicated channel busy ratio (CBR) and / or a channel access occupancy ratio (CR) mechanism, rather than a distributed congestion control mechanism. For example, distributed congestion control can specify a range of CRs for a given CBR (e.g., applicable to general sidelink applications), and specify an allowable number of retransmissions without reducing transmit power. For the same CBR, dedicated congestion control may specify a lower CR or a lower CR range than distributed congestion control. Additionally or alternatively, dedicated congestion control may allow a larger number of retransmissions than distributed congestion control without reducing transmit power. Mechanisms for supporting independent sidelink communications for IIoT are described in more detail herein.

[0068] Figure 2An IIoT deployment 200 according to some aspects of the present disclosure is shown. The IIoT deployment 200 may correspond to a portion of the network 100. The IIoT deployment 200 includes a plurality of PLC UEs 204 (shown as 204a and 204b) and a plurality of S / A UEs 206 (shown as 206a, 206b, and 206c) in a production cell 210. Although the IIoT deployment 200 is shown as having two PLC UEs 204 and three S / A UEs 206, it should be understood that in other examples, the IIoT deployment may include any appropriate number of PLC UEs 204 (e.g., 1, 3, 4, 5, 6, or more) and any appropriate number of S / A UEs 206 (e.g., 1, 2, 4, 5, 6, 7, 8, 9, 10, or more). The PLC UE 204 and the S / A UE 206 may correspond to the UE 115 in the network 100. The PLC UE 204 may be a PLC equipped with a wireless communication device. The S / AUE 206 may be a machine, industrial equipment, robot, sensor, actuator, etc. equipped with a wireless communication device. The PLC UE 204 may control the operation of the S / AUE 206, for example, by sending control commands to the S / AUE 206. The PLC UE 204 may also read data, records, and / or measurements from the S / AUE 206. The communication between the PLC UE 206 and the S / A UE 204 may be conducted over a wireless channel (e.g., the sidelink 212).

[0069] The production cell 210 may be located within a production building or factory that is shielded from the coverage of the BS 105, as indicated by the arrow with the cross symbol "X". Thus, the IIoT deployment 200 may operate as a standalone sidelink system. In order to facilitate sidelink communications in the production cell 210 without assistance from the BS 105 while providing configuration flexibility, the S / A UE 206 may be configured with multiple preconfigured profiles for sidelink communications. The preconfigured profiles may include information related to operating frequency bands and / or radio resource pools. Different preconfigured profiles may be associated with different geographic regions, and / or may have different resource pool configurations that utilize different congestion control rules. Each PLC UE 204 may be configured to act as a sidelink communication controller for a group of S / A devices 206 that are in the vicinity of the PLC UE 202. In the illustrated Figure 2 In the example of , S / A UE 206a may be associated with PLC UE 204a, S / A UE 206b may be associated with PLC UE 204b, and S / A UE 206c may be associated with PLC 204a at one time and with PLC 204b at another time.

[0070] In some aspects, the PLC UE 204a may broadcast a system information signal in a PSBCH similar to a PBCH. The system information signal may include an indication of a first pre-configured profile of a plurality of pre-configured profiles, as will be described below in conjunction with Figure 4 More fully discussed.PLC UE 204a can periodically send system information signal.S / A UE 206a can monitor PSBCH signal from PLC UE 204.After receiving PSBCH signal, S / A UE 206a can communicate with PLC UE 204a based on first pre-configured profile.For example, S / A UE 206a can establish unicast connection with PLC UE 204a to communicate.Similarly, PLC UE 204b and S / A UE 206b can communicate with PLC UE 204a and S / A UE 206a similar mechanism.In some instances, S / A UE 206c can also receive PSBCH signal from PLC UE 204a, and can establish unicast connection with PLC UE 204a to communicate. In some instances, the S / A UE 206 c may be relocated or reconfigured and may instead receive the PSBCH signal from the PLC UE 204 b, as shown by the sidelink 212 with a dashed line. Thus, the S / A UE 206 c may communicate with the PLC UE 204 b instead of the PLC UE 204 a. Thus, the S / A UE 206 c may communicate with different PLC UEs 204 over time. When the S / A UE 206 is synchronized to a certain PLC UE 204, the S / A UE 206 may select a preconfigured profile based on the PSBCH signal received from the corresponding PLC UE 204.

[0071] Figure 3 A sidelink radio resource allocation and communication scheme 300 according to some aspects of the present disclosure is shown. Scheme 300 may be employed by a UE, such as UE 115 in network 100 and / or UE 204 and / or 206 in IIoT deployment 200. In particular, a sidelink UE may employ scheme 300 to conduct sidelink communications on a radio frequency band (e.g., in a shared spectrum, an unlicensed spectrum, or a licensed band). Figure 3 , the x-axis represents time in some arbitrary units, and the y-axis represents frequency in some arbitrary units.

[0072] In the scheme 300, a shared radio frequency band 301 is divided in frequency into a plurality of sub-channels or frequency sub-bands 302 (shown as 302 S0 ,302 S1 ,302 S2, ...), and is divided into a plurality of sidelink frames 304 (shown as 304a, 304b, 304c, 304d, ...) in time for sidelink communication. Frequency band 301 can be at any suitable frequency (e.g., approximately 2.4 GHz, 5 GHz, or 6 GHz). Frequency band 301 can have any suitable BW and can be divided into any suitable number of frequency sub-bands 302. The number of frequency sub-bands 302 can depend on the sidelink communication BW requirements. Frequency band 301 can be at any suitable frequency. In some aspects, frequency band 301 is a 2.4 GHz unlicensed band and can have a bandwidth of approximately 80 megahertz (MHz) divided into approximately fifteen 5 MHz frequency sub-bands 302.

[0073] In some examples, a sidelink UE (e.g., UE 115, 204, and / or 206) may be equipped with a wideband receiver and a narrowband transmitter. For example, the UE may utilize a narrowband transmitter to access frequency subband 302. S2 , to utilize the frame structure 304 for sidelink transmission. The frame structure 304 is repeated in each frequency sub-band 304. In some examples, there may be frequency gaps or guard bands between adjacent frequency sub-bands, such as Figure 3 , for example, to mitigate adjacent frequency band interference. Thus, multiple sidelink data (e.g., FDM) can be transmitted simultaneously in different frequency sub-bands 302. The frame structure 304 also repeats in time. For example, the frame structure 304 can be used to separate the frequency sub-bands 302. S2 Divided into multiple frames in time.

[0074] The frame structure 304 includes sidelink resources 306 in each frequency subband 302. The legend 305 indicates the type of sidelink channel within the sidelink resource 306. The sidelink resource 306 can have a structure substantially similar to the NR sidelink resource. For example, the sidelink resource 306 can include multiple subcarriers or RBs in frequency and multiple symbols in time. In some instances, the sidelink resource 306 can have a duration between approximately 1 millisecond (ms) and approximately 20 ms. Each sidelink resource 306 can include a PSCCH 310 and a PSSCH 320. The PSCCH 310 and the PSSCH 320 can be multiplexed in time and / or frequency. Figure 3In the illustrated example, for each sidelink resource 306, the PSCCH 310 is located during the beginning symbol (e.g., about 1 symbol or about 2 symbols) of the sidelink resource and occupies a portion of the corresponding frequency subband 302, and the PSSCH 320 occupies the remaining time-frequency resources in the sidelink resource 306. In some instances, the sidelink resource 306 may also include a physical sidelink feedback channel (PSFCH), for example, located during the ending symbol of the sidelink resource 306. In general, the PSCCH 310, PSSCH 320, and / or PSFCH may be multiplexed in any suitable configuration within the sidelink resource 306. In some aspects, the sidelink frame 304 and / or the sidelink resource 306 may be part of a sidelink resource pool 308.

[0075] As described above, the S / AUE 206 may be pre-configured with a set of pre-configured profiles (e.g., stored in a file similar to Figure 8 The preconfigured profile may be stored in a memory of a memory 804 of the S / A UE 206, and a preconfigured profile may be selected from a set of stored preconfigured profiles based on a preconfigured profile index or a regional index received from a PSBCH signal broadcast by the PLC UE 206. The selected preconfigured profile may include a radio resource configuration. The radio resource configuration may indicate one or more resource pools similar to the resource pool 308, which include sidelink resources 306 in the frequency band 301 and / or subband 302 and / or timing information associated with the sidelink frame 304. The one or more resource pools may include a transmit resource pool and / or a receive resource pool. The sidelink resources 306 in the transmit resource pool may be used by the S / A UE 206 to send sidelink communications (e.g., PSCCH 310, PSSCH 320) to the PLC UE 204. The sidelink resources 306 in the receive resource pool may be used by the S / A UE 206 to receive sidelink transmissions (e.g., PSCCH 310, PSSCH 320) from the PLC UE 204. Additionally, the PLC UE 204 may configure additional transmit resource pools (e.g., with different CBR / CR for different QoS levels) and / or exception transmit resource pools via the sidelink RMSI. The additional transmit resource pools and / or exception transmit resource pools may also be similar to the resource pool 308.

[0076] In the sidelink communication, in order for the S / A UE 206 to successfully decode the PSCCH 310 and the PSSCH 320, information describing the specific resources and transmission configuration assigned by the PLC UE 204 for transmission may be carried in the sidelink control information SCI. In this regard, the control information for the sidelink communication may be transmitted in the form of an SCI message. The SCI message may be sent on the PSCCH 310, which carries information related to the transmission of data on the PSSCH 320.

[0077] The SCI may inform the S / A UE 204 of a resource reservation interval, frequency locations of initial transmission and retransmission, a time gap between initial transmission and retransmission, and a modulation and coding scheme (MCS) used to modulate data sent on the PSSCH 320 .

[0078] For mode 2 RRA, the SCI can be filled based on the autonomous decision taken by each PLC UE 204. The structure of the SCI message may include a frequency hopping flag field, a resource block assignment and a frequency hopping resource allocation field, a time resource mode field, an MCS field, a time advance field, and a group destination identifier field. The structure of the SCI message may include other additional fields suitable for supporting IIoT control signaling. The frequency hopping flag field and the resource block assignment and frequency hopping resource allocation field may provide information for the S / A UE 206 to identify the RB where the data channel (e.g., PSSCH 320) resides. The PLC UE 204 may configure each of these two fields autonomously. The identified RB may belong to a sidelink communication resource pool (e.g., a PSSCH resource pool). The time resource mode field may provide time domain resource allocation for a data channel (e.g., PSSCH 320), and in particular, a potential subframe for PSSCH transmission. The MCS field may provide an MCS for PSSCH 320, which may be selected autonomously by the PLC UE 204. The timing advance field may provide sidelink timing adjustments for Mode 2 RRA or other applicable modes. The group destination identifier field may indicate a group of S / A UEs 206 that are potentially interested in the message sent from the PLC UE 204. This may be used by the S / A UE 206 to ignore messages destined for other groups of S / A UEs 206.

[0079] In some aspects, the SCI message may be processed using transport channel coding to generate an SCI message transport block, and then physical channel coding may be used to generate a corresponding PSCCH block. The PSCCH block is carried on a corresponding subframe resource element for transmission. The S / A UE 206 may receive one or more resource elements on a corresponding subframe to recover the control signaling information, and may extract the data channel allocation and transmission configuration.

[0080] The PSCCH 310 may be used to carry the SCI 330. The PSSCH 320 may be used to carry sidelink data. The sidelink data may have various forms and types depending on the sidelink application. For example, when the sidelink application is an IIoT application, the sidelink data may carry IIoT data (e.g., sensor measurements, device measurements, temperature readings, control commands, etc.). The PSFCH may be used to carry feedback information, such as HARQ ACK / NACK for sidelink data received in an earlier sidelink resource 306.

[0081] In some aspects, the scheme 300 is used to synchronize sidelink communications. In other words, the PLC UE 204 and the S / A UE 206 are synchronized in time and aligned in terms of symbol boundaries, sidelink resource boundaries (e.g., the start time of the sidelink frame 304). The S / A UE 206 can perform synchronization in various forms, for example, based on a sidelink synchronization signal received from the PLC UE 204.

[0082] In some aspects, when transmitting a sidelink transmission, a sidelink UE (e.g., UE 115, PLC UE 204, and / or S / A UE 206) may include in the SCI 330 a reservation for a sidelink resource 306 in a later sidelink frame 304. Thus, another sidelink UE (e.g., a UE in the same NR-U sidelink system) may perform SCI sensing in the resource pool 308 to determine whether the sidelink resource 306 is available or occupied. For example, if the sidelink UE detects an SCI indicating a reservation for the sidelink resource 306, the sidelink UE may avoid transmitting in the reserved sidelink resource 306. If the sidelink UE determines that a reservation for the sidelink resource 306 is not detected, the sidelink UE may transmit in the sidelink resource 306. Thus, SCI sensing may assist the UE in identifying a target frequency subband 302 to reserve for sidelink communication and avoid intra-system collisions with another sidelink UE in the NR sidelink system. In some aspects, a UE may be configured with a sensing window for SCI sensing or monitoring to reduce intra-system conflicts.

[0083] In some aspects, the sidelink UE may be configured with a frequency hopping pattern. In this regard, the sidelink UE may hop from one frequency subband 302 in one sidelink frame 304 to another frequency subband 302 in another sidelink frame 304. Figure 3 In the example of FIG. 1 , during the sidelink frame 304a, the sidelink UE is located in the frequency subband 302 S2The SCI 330 is sent in the sidelink resource 306 of the next sidelink frame 304b to reserve the frequency subband 302 in the next sidelink frame 304b. S1 Similarly, during sidelink frame 304b, the sidelink UE is located in frequency subband 302. S1 The SCI 332 is sent in the sidelink resource 306 of the next sidelink frame 304c to reserve the frequency subband 302 in the next sidelink frame 304c. S1 During the sidelink frame 304c, the sidelink UE is located in the frequency subband 302 S1 The SCI 334 is sent in the sidelink resource 306 of the next sidelink frame 304d to reserve the frequency subband 302 in the next sidelink frame 304d. S0 During the sidelink frame 304d, the sidelink UE is located in the frequency subband 302 S0 The SCI 336 may be reserved for the sidelink resources 306 in a later sidelink frame 304.

[0084] The SCI may also indicate scheduling information and / or a destination identifier (ID) that identifies a target sidelink UE for reception in the next sidelink resource 306. Thus, the sidelink UE may monitor the SCI sent by other sidelink UEs. Upon detecting the SCI in the sidelink resource 306, the sidelink UE may determine, based on the destination ID, whether the sidelink UE is the target receiver. If the sidelink UE is the target receiver, the sidelink UE may continue to receive and decode the sidelink data indicated by the SCI. In some aspects, multiple sidelink UEs may simultaneously transmit sidelink data (e.g., via FDM) in different frequency subbands in the sidelink frame 304. For example, in the sidelink frame 304b, a pair of sidelink UEs may use frequency subband 302a to transmit sidelink data in different frequency subbands. S2 The sidelink resource 306 in the frequency subband can be used to transmit sidelink data, while another pair of sidelink UEs can use the frequency subband 302 S1 The sidelink resources 306 in are used to transmit sidelink data.

[0085] Although the scheme 300 is described in the context of sidelink transmissions from a PLC UE 204 to an S / A UE 206 , similar sensing and / or transmission mechanisms may apply to sidelink transmissions from an S / A UE 206 to a PLC UE 204 and / or to another S / A UE 206 .

[0086] Figure 4A sidelink communication scheme 400 according to some aspects of the present disclosure is shown. The scheme 400 can be employed by the PLC UE 204 and the S / A UE 206 in the IIoT deployment 200 for sidelink communication. In particular, the PLC UE 204 can employ the scheme 400 to transmit sidelink system information (e.g., PSBCH) in a radio frequency band (e.g., in a shared spectrum, an unlicensed spectrum, and / or a licensed spectrum) to support IIoT applications.

[0087] In scheme 400, PLC UE 204 transmits PSBCH signal 410 in broadcast mode.PLC UE 204 may periodically broadcast PSBCH signal 410 to assist S / A UE 206 in synchronizing to PSBCH signal 410.In some instances, PSBCH signal 410 may be transmitted in a preconfigured frequency band known to PLC UE 204 and S / A UE 206.Therefore, S / A UE 206 may monitor the preconfigured frequency band for PSBCH signal 410.Monitoring may include receiving a signal from a channel and decoding the PSBCH signal from the received signal.In some instances, PLC UE 204 may, for example, use various factors such as interference to select a frequency band from a preconfigured frequency band set for transmitting PSBCH signal 410.The preconfigured frequency band set is known to PLC UE 204 and S / A UE 206. Therefore, the S / A UE 206 may monitor the PSBCH signal 410 in the preconfigured set of frequency bands.

[0088] The PSBCH signal 410 may include a profile indication 412. As described above, in order to provide flexibility for sidelink configuration with minimal signaling overhead, the S / AUE 206 may be preconfigured with a plurality of preconfigured profiles 420. As indicated by the dashed boxes, the plurality of preconfigured profiles 420 may be stored in a memory (e.g., Figure 8 The pre-configured profile indication 412 in the PSBCH signal 410 may reference one of the plurality of pre-configured profiles 420 at the S / AUE 206.

[0089] In the shown Figure 4 In the example of FIG. 4 , S / A UE 206 is pre-configured with Profile A 420a and Profile B 402b. Figure 4Two preconfigured profiles 420 at the S / A UE 206 are shown, but it should be understood that in other examples, the S / A UE 206 may be preconfigured with any suitable number of preconfigured profiles 420 (e.g., approximately 3, 4, 5, or 6). Each of the preconfigured profiles 420 may include a band configuration 422 and an RRM configuration 424. The expanded view 402 shows profile A 420a including the band configuration 422 and the RRM configuration 424. The band configuration 422 may indicate a carrier frequency and a band or an initial BWP in which the S / A UE 206 may operate for sidelink communications or the S / A UE 206 may monitor the PSBCH signal 410. The band configuration 422 may also indicate an SCS in the band.

[0090] The RRM configuration 424 may include a transmit resource pool configuration and / or a receive resource pool configuration. The transmit resource pool configuration may indicate a resource pool similar to resource pool 308. The transmit resource pool configuration may include information related to the following: the frequency band (e.g., frequency band 301) in which the transmit resource pool is located, the subband partitions (e.g., subband 302) within the transmit resource pool, and / or the resource frame structure (e.g., frame 304) of the transmit resource pool. The transmit resource pool configuration may define the resources (e.g., resources 306) in the transmit resource pool in any suitable format, for example, in units of RBs in frequency and in units of OFDM symbols in time. The receive resource pool configuration may be substantially similar to the transmit resource pool configuration. The sidelink resources in the transmit resource pool may be used by the S / A UE 206 to send sidelink communications (e.g., PSCCH 310, PSSCH 320) to the PLC UE 204. The sidelink resources 306 in the receive resource pool may be used by the S / A UE 204 to receive sidelink transmissions (e.g., PSCCH 310, PSSCH 320) from the PLC UE 204. In some instances, the transmit resource pool may be separate from the receive resource pool. In other words, the transmit resource pool and the receive resource pool may include different time and frequency resources. In some other instances, the transmit resource pool and the receive resource pool may overlap at least partially in time and / or frequency.

[0091] In some instances, the RRM configuration 424 may also indicate a reference frequency, which may be referred to as point A in 5G (e.g., the lowest subcarrier of common RB 0 in the resource grid). The RRM configuration 424 may also indicate an offset for the carrier, which may be an offset between point A and the lowest available subcarrier on the carrier frequency and may be expressed in units of physical RBs (PRBs). The RRM configuration 424 may also indicate a starting RB index and / or RB length or number of consecutive RBs that define the sidelink BWP. In some instances, the sidelink BWP may correspond to a frequency band in which a transmit resource pool and / or a receive resource pool may be configured.

[0092] In some aspects, the RRM configuration 424 may also indicate a congestion control rule for the transmission resource pool. The congestion control rule may indicate a CBR threshold and / or a CR threshold. CBR is a measure indicating the number of subchannels (e.g., frequency subbands 302) in a sidelink resource pool (e.g., resource pool 308) having a measured received signal strength indicator (RSSI) greater than a preconfigured threshold divided by the total number of subchannels in the resource pool. The CBR metric may be calculated for a certain number of time intervals or subframes (e.g., sidelink frames 304). CBR may provide an estimate of the overall state of the channel. In some instances, the S / A UE 206 may calculate the CBR by measuring the RSSI in the subchannels in the resource pool over a time interval including a plurality of subframes (e.g., approximately 100), calculating the number of subchannels (e.g., subchannel count) having an RSSI greater than a preconfigured threshold in the time interval, and dividing the subchannel count by the total number of subchannels in the resource pool. The S / A UE 206 may determine whether to access resources in the transmit resource pool based on whether the calculated CBR satisfies the CBR threshold specified by the RRM configuration 424. For example, when the calculated CBR is below the CBR threshold, the S / A UE 206 may utilize resources from the transmit resource pool, and when the calculated CBR is above the CBR threshold, the S / A UE 206 may avoid utilizing resources from the transmit resource pool.

[0093] CR is a metric indicating the number of subchannels (e.g., frequency subbands 302) occupied by the sidelink UE for transmission divided by the total number of subchannels in the resource pool. The CR metric may be calculated for a certain number of time intervals or subframes (e.g., sidelink frames 304). CR may provide an indication of channel utilization by the S / AUE 206. In some instances, the S / AUE 206 may calculate the CR by calculating the number of subchannels in the resource pool in which the S / A UE 206 has active transmissions over the time interval (e.g., a subchannel count), and dividing the subchannel count by the total number of subchannels in the resource pool. The S / A UE 206 may determine whether to access resources in the transmit resource pool based on whether the calculated CR satisfies a CR threshold specified by the RRM configuration 424. For example, when the calculated CR is below the CR threshold, the S / A UE 206 may utilize resources from the transmit resource pool, and when the calculated CR is above the CR threshold, the S / A UE 206 may avoid utilizing resources from the transmit resource pool. In some instances, RRM configuration 424 may specify different CBRs and / or CRs for different service priorities. For example, RRM configuration 424 may specify that when the CBR is 0.9, the sidelink UE (e.g., S / A UE 206) may limit its CR to 0.1 for a first service priority, and may specify that when the CBR is 0.5, the sidelink UE (e.g., S / A UE 206) may limit its CR to 0.3 for another service priority.

[0094] In some aspects, RRM configuration 424 may also include a region configuration. A region configuration may define multiple geographic regions. For example, a region configuration may include geographic coordinates, region width, and / or region length for each geographic region. In some instances, a region configuration may define, for example, a region of every 10 kilometers (km) between two geographic locations. In some aspects, RRM configuration 424 may also include a region to resource mapping. For example, different regions may use different resource pools or different portions of a resource pool.

[0095] In some aspects, different pre-configuration profiles 420 may be associated with different regions. For example, when S / A UE 206 operates in a country or city, pre-configuration profile A 420a may be used, and when S / A UE 206 operates in another country or city, pre-configuration profile B 420b may be used. In some aspects, different pre-configuration profiles 420 may be associated with different network operators. For example, when S / A UE 206 is operated by one network operator, pre-configuration profile 420a may be used for operation, and when S / A UE 206 is operated by another operator, pre-configuration profile B 420b may be used. In some instances, different pre-configuration profiles 420 may define different operating frequency bands, different resource pool configurations, different congestion control and / or different regions to resource mapping. In some instances, for some configurations in the configuration, different pre-configuration profiles 420 may have the same parameters.

[0096] In some aspects, the profile indication 412 may be an index that references a preconfigured profile 420 at the S / A UE 206. For example, preconfigured profile A 420a may be referenced by index 0, and preconfigured profile A 420a may be referenced by index 1. Thus, the profile indication 412 may be represented by one bit in the sidelink MIB carried by the PSBCH signal 410. In some other examples, the S / A UE 206 may include four preconfigured profiles 420, and thus, the profile indication 412 may be represented by two bits in the sidelink MIB carried by the PSBCH signal 410.

[0097] In some aspects, the profile indication 412 may be a regional ID associated with the PLC UE 204. The regional ID may be used to identify a preconfigured profile 420 at the S / A UE 206. For example, the S / A UE 206 may be preconfigured with a mapping between the regional ID and the preconfigured profile 420. The mapping may associate regional ID 0 with preconfigured profile B 420b, and may associate regional ID 1 with preconfigured profile A 402a. Thus, if the S / A UE 206 detects a PSBCH signal 410 including a profile indication 412 indicating regional ID 0, the S / A UE 206 may utilize preconfigured profile B 420b. Alternatively, if the S / A UE 206 detects a PSBCH signal 410 including a profile indication 412 indicating regional ID 1, the S / A UE 206 may utilize preconfigured profile A 420a.

[0098] In some aspects, the profile indication 412 may include a profile index and an area ID. The profile index may be used by the S / A UE 206 to select a preconfigured profile 420 from a plurality of preconfigured profiles 420. The area ID may be used to determine, for example, a resource pool or a resource pool portion configured for a specific area identified by the area ID based on an area-to-resource mapping. In some instances, the S / A UE 206 may be equipped with a GPS and therefore be able to determine an area without relying on an area ID. In some other instances, the S / A UE 206 may not or may not be able to determine the area in which the S / A UE 206 is located, and therefore, the broadcast area ID may be used as a default value, for example, to determine a resource pool or a resource pool portion based on an area-to-resource mapping.

[0099] As can be observed in the scheme 400, by preconfiguring the S / A UE 206 with multiple preconfigured profiles 420, the PLC UE 204 may have the flexibility to select a preconfigured profile via the profile indication 412, which may include minimal signaling overhead.

[0100] To further provide flexibility and / or more advanced sidelink RRM configuration, the PLC UE 204 may include a sidelink RMSI pointer 414 in the PSBCH signal 410, as shown by the dashed box. The sidelink RMSI pointer 414 may point to or indicate a resource (e.g., a time-frequency resource) in which scheduling information for the sidelink RMSI may be sent.

[0101] Figure 5 A sidelink communication scheme 500 according to some aspects of the present disclosure is shown. The scheme 500 can be adopted by the PLC UE 204 and the S / A UE 206 in the IIoT deployment 200 for sidelink communication. In particular, the PLC UE 204 can adopt the scheme 500 to transmit sidelink system information (e.g., PSBCH) for IIoT communication in a radio frequency band (e.g., in a shared spectrum, an unlicensed spectrum, or a licensed spectrum). The scheme 500 can be implemented in conjunction with the scheme 400.

[0102] In scheme 500, PLC UE 204 transmits PSBCH signal 410, for example, by implementing scheme 400. PSBCH signal 410 may include sidelink RMSI pointer 414, such as Figure 4. After sending the PSBCH signal 410, the PLC UE 204 sends a sidelink RMSI signal 520. The sidelink RMSI signal 520 may be sent in a broadcast mode in a PSSCH (e.g., PSSCH 320). The PLC UE 204 may send scheduling information for the sidelink RMSI signal 520 in the resources indicated by the sidelink RMSI pointer 414. The scheduling information may include resource allocation and / or one or more transmission parameters (e.g., MCS) to be used for the transmission of the sidelink RMSI signal 520. The PLC UE 204 may send the sidelink RMSI signal 520 according to the sidelink RMSI scheduling information.

[0103] The sidelink RMSI signal 520 may include an RRM configuration 522. In some aspects, the RRM configuration 522 may include one or more preconfigured override parameters 524 that override the configuration in the preconfigured profile 420 (e.g., the preconfigured profile A 420a indicated by the profile indication 412). Therefore, after receiving the sidelink RMSI signal 520, the S / A UE 206 may operate according to the one or more preconfigured override parameters 524 instead of the corresponding configuration parameters in the preconfigured profile A 420a. In some instances, the one or more preconfigured override parameters 524 may override the region configuration in the preconfigured profile 420a. For example, the one or more preconfigured override parameters 524 may include at least one of geographic coordinate information, region length, region width, or region to resource pool mapping. In other words, the S / A UE 206 may determine the region definition based on the geographic coordinate information, region length, and / or region width indicated by the one or more preconfigured override parameters 524. The S / A UE 206 may also determine a transmit / receive resource pool or resource pool portion based on a region-to-resource mapping indicated by one or more preconfigured coverage parameters 524 .

[0104] In some instances, one or more preconfigured override parameters 524 may override congestion control mechanisms and / or rules for one or more transmit resource pools configured by preconfigured profile A 420a. For example, one or more preconfigured override parameters 524 may include at least one of a CBR or a CR associated with a transmit resource pool preconfigured by preconfigured profile A 420a. For example, one or more preconfigured override parameters 524 allow S / A UE 206 to access the preconfigured transmit resource pool at a higher CBR and / or a higher CR than the CBR and / or CR defined by preconfigured profile A 420a. In another example, one or more preconfigured override parameters 524 may restrict S / A UE 206 from accessing the preconfigured transmit resource pool at a lower CBR and / or a lower CR than the CBR and / or CR defined by preconfigured profile A 420a.

[0105] Additionally or alternatively, the RRM configuration 522 may include a resource pool configuration 526 indicating, for example, one or more transmit resource pools (for mode 2 RRA operation) different from the transmit resource pool configured by the preconfigured profile A 420a. The one or more transmit resource pools may have a resource arrangement substantially similar to the resource pool 308. In some aspects, the resource pool configuration 526 may indicate different CRs and / or different CBRs for different QoS targets. For example, the resource pool configuration 526 may configure different CRs for a given CBR to provide different QoS targets. For example, for a given CBR, the resource pool configuration 526 may configure a smaller CR to achieve a higher target QoS. Therefore, for the same number of UEs in the system, the overall CBR may be smaller.

[0106] In some aspects, RRM configuration 522 may include an abnormal transmission resource pool configuration 528 indicating an abnormal transmission resource pool. The abnormal transmission resource pool may have a resource arrangement substantially similar to resource pool 308. Figure 3 As discussed, the S / A UE 206 may be configured with a sensing window for performing SCI sensing in the resource pool 308, and when it is determined based on sensing that the resource 306 is not reserved, it may be transmitted in the resource 306. The S / A UE 206 may be configured to perform SCI sensing or reservation detection for a common or normal resource pool (e.g., a non-abnormal resource pool). The S / A UE 206 may be configured to perform sensing, for example, within a certain duration. For sensing, the S / A UE 206 may begin by selecting all subchannels in the non-abnormal resource pool as candidates, and decode SCI and / or measure RSSI from resources in all subchannels in the non-abnormal resource pool. This process may last for a considerable period of time. The S / A UE 206 may exclude resources with RSSI exceeding a certain threshold and / or with reserved SCI. The S / A UE 206 may select candidate resources from the remaining resources in the non-abnormal resource pool. In the abnormal transmission resource pool, the S / A UE 206 may access resources without performing sensing or may be based on partial sensing (eg, performing sensing for a shortened duration).

[0107] In some aspects, abnormal transmission resource pool configuration 528 may include a rule for accessing the abnormal transmission resource pool. For example, abnormal transmission resource pool configuration 528 may specify that S / A UE 206 may randomly select subchannels (e.g., subband 302) from the abnormal transmission resource pool. Abnormal transmission resource pool configuration 528 may further define some rules for performing random selection. For example, random selection rules may specify that S / A UE 206 may select all subchannels in the abnormal transmission resource pool as candidates, without considering RSSI and / or SCI reservations in the abnormal transmission resource pool. Alternatively, random selection rules may specify that S / A UE 206 may randomly select candidate subchannels in the abnormal transmission resource pool, without considering RSSI and / or SCI reservations in the abnormal transmission resource pool. In some other instances, when the abnormal transmission resource pool is defined on an unlicensed frequency band, abnormal transmission resource pool configuration 528 may allow S / A UE 206 to access the abnormal transmission resource pool based on carrier sensing medium access / collision avoidance (CSMA / CA) mechanisms (such as LBT). LBT can be based on the above Figure 1 For example, the S / A UE 206 may perform monitoring in the abnormal transmission resource pool (e.g., in one or more subchannels). If the signal detected in the resources in the abnormal transmission resource pool is higher than a certain energy detection threshold, the S / A UE 206 may avoid transmitting in the resources. Conversely, if the signal detected in the resources in the abnormal transmission resource pool is lower than a certain energy detection threshold, the S / A UE 206 may use the resources for transmission.

[0108] Figure 6 6 is a signaling diagram illustrating a sidelink communication method 600 during initial network access according to some aspects of the present disclosure. The method 600 can be implemented between a PLC UE 604 and two S / A UEs 606 (shown as 606a and 606b). The PLC UE 604 and the S / A UE 606 can correspond to the PLC UE 204 and the S / A UE 206 in the IIoT deployment 200. Although the method 600 shows that the PLC UE 604 communicates with the two S / A UEs 606, it should be understood that in other examples, the PLC UE 604 can communicate with any appropriate number of S / A UEs 606 (e.g., about 2, 3, 4, 5, 6 or more). As shown, the method 600 includes a plurality of enumerated actions, but an embodiment of the method 600 can include additional actions before, after, and between the enumerated actions. In some embodiments, one or more of the enumerated actions can be omitted or performed in a different order.

[0109] Method 600 may be used as described above with reference to Figure 4and 5 Each of the S / A UEs 606a and 606b may be pre-configured with a plurality of profiles similar to profile 420. Each of the S / A UEs 606a and 604b may store the pre-configured profiles in a corresponding memory (e.g., Figure 8 in memory 804).

[0110] At action 610, PLC UE 604 transmits a PSBCH signal, for example, in a broadcast mode. The PSBCH signal may be similar to PSBCH signal 410, for example, including a profile indication similar to profile indication 412. PLC UE 604 may also transmit a synchronization signal as part of the broadcast. The synchronization signal may be similar to a PSS and / or SSS transmitted by a BS (e.g., BS105). The synchronization signal may have a predetermined signal waveform. PLC UE 604 may periodically transmit a PSBCH signal and / or a synchronization signal according to a predetermined period (e.g., approximately 10ms, 20ms, 40ms, 80ms, or 160ms) to enable S / A UE 606a and / or 606b to synchronize to PLC UE 606.

[0111] At action 620, S / A UE 606a performs synchronization to PLC UE 604. For example, S / A UE 60a may monitor PSBCH signals in a certain frequency band. S / A UE 606a may be preconfigured with a frequency band. S / A UE 606a may search for a synchronization signal, for example, by calculating a correlation between a predetermined waveform and a signal received from a channel. After detecting a synchronization signal (e.g., a correlation that satisfies a certain threshold), S / A UE 606a may adjust its timing (e.g., symbol timing) based on the synchronization signal.

[0112] At action 625, after detecting the PSBCH signal, the UE 606a reads the profile indication from the PSBCH signal. After obtaining the profile indication, the UE 606a can select a preconfigured profile from a plurality of preconfigured profiles stored at the S / A UE 606a based on the profile indication. For example, the profile indication can be an index or a regional ID that references a preconfigured profile in the plurality of preconfigured profiles.

[0113] At action 630 , the S / A UE 606 b performs synchronization to the PLC UE 604 , for example using a similar mechanism as the S / A UE 606 a at action 620 .

[0114] At action 635, after detecting the PSBCH signal, the UE 606b reads the profile indication from the PSBCH signal. After obtaining the profile indication, the UE 606b may select a preconfigured profile from a plurality of preconfigured profiles stored at the UE 606b based on the profile indication.

[0115] At action 640, the PLC UE 604 sends a sidelink RMSI signal, for example, in the PSSCH 320. The sidelink RMSI signal may be similar to the sidelink RMSI signal 520. For example, the PLC UE 604 may include a sidelink RMSI pointer (e.g., the sidelink RMSI pointer 414) in the PSBCH signal sent at action 610. The sidelink RMSI pointer may point to a resource (e.g., a time-frequency resource) in which scheduling information for the sidelink RMSI signal may be sent. The PLC UE 604 may send a sidelink RMSI signal according to the sidelink RMSI scheduling information. The sidelink RMSI signal may include an RRM configuration similar to the RRM configuration 522. Therefore, each of the S / A UEs 606a and 606b may monitor the sidelink RMSI scheduling information based on the sidelink RMSI pointer. After receiving the sidelink RMSI scheduling information, each of the S / A UEs 606a and 606b may receive a sidelink RMSI signal according to the sidelink RMSI scheduling information.

[0116] At act 650, the S / A UE 606a may establish a unicast connection with the PLC UE 604. For example, the S / A UE 606a may send a sidelink connection request to the PLC UE 604, and the PLC UE 604 may respond with a sidelink connection response.

[0117] At action 660, after establishing the connection, the S / A UE 606a communicates with the PLC UE 604 according to the RRM configuration indicated by the sidelink RMSI signal. For example, if the RRM configuration includes overriding pre-configured parameters at the S / A UE 606a (e.g., pre-configured override parameters 524), the S / A UE 606a may apply the parameters indicated by the RRM configuration instead of the pre-configuration. If the RRM configuration includes a resource pool configuration (e.g., resource pool configuration 526), ​​the S / A UE 606a may utilize the resource pool indicated by the resource pool configuration and / or associated congestion control parameters (e.g., CBR and / or CR) for transmission. For example, the S / A UE 606a may perform SCI sensing based on SCI reservation monitoring and / or RSSI measurements from the resource pool to determine whether resources in the resource pool are available for transmission. The congestion control parameters may depend on the resource pool configuration as described above. Figure 5If the RRM configuration includes an exception transmission resource pool configuration (e.g., exception transmission resource pool configuration 528), the S / A UE 606a may utilize the exception transmission resource pool indicated by the resource pool configuration and / or associated congestion control parameters (e.g., CBR and / or CR) for transmission. The RRM configuration may include sensing rules for accessing the exception transmission resource pool configuration, as described above with respect to Figure 5 As discussed. In some instances, when the S / A UE 606a loses sensing (e.g., fails to locate available resources) in a normal resource pool (e.g., a preconfigured resource pool and / or a resource pool configured by a resource pool configuration) and has high priority data to be sent, the S / A UE 606a may utilize the abnormal transmission resources for transmission. In some instances, the S / A UE 606a may be allowed to utilize the abnormal transmission resource pool for transmission within a certain duration. The maximum permissible transmission duration for using resources from the abnormal transmission resource pool may depend on the business priority of the transmission.

[0118] At action 670, after receiving the sidelink RMSI signal, the S / A UE 606b may also communicate with the PLC UE 604 according to the RRM configuration indicated by the sidelink RMSI signal. As with the S / A UE 606a described at action 660, the S / A UE 606b may utilize the resource pool and / or coverage parameters indicated by the RRM configuration. However, the S / A UE 606b may not have a unicast connection established with the PLC UE 604. When the S / A UE 606b does not have a unicast connection established with the PLC UE 604, once the S / A UE 606b decodes the RSMI signal, the S / A UE 606b may comply with the RRM configuration (e.g., operate according to the RRM configuration). However, the S / A UE 606b may operate according to the RRM configuration within a certain duration (e.g., T milliseconds (ms)). For example, the S / A UE 606b may start a timer 602 having a duration of T ms after decoding the sidelink RMSI signal, and may operate according to the RRM configuration while the timer 602 is running.

[0119] At action 690, after the timer 602 expires, the S / A UE 602b may fall back to the pre-configured profile (referenced by the profile indication in the PSBCH signal).

[0120] At action 680, after establishing a unicast connection with S / A UE 606a, PLC UE 604 may send a dedicated resource pool configuration to S / A UE 606a. The dedicated resource pool configuration may be a PC5-RRC configuration. The dedicated resource pool configuration may indicate a transmit resource pool with resources dedicated to communications on a unicast connection. S / A UE 606a may not apply a distributed congestion control mechanism to the dedicated resource pool. In some instances, the configuration may indicate a CBR and / or CR for accessing resources in the dedicated resource pool. For example, distributed congestion control may specify a range of CRs for a given CBR (e.g., applicable to general sidelink applications) and specify a permissible number of retransmissions without reducing transmit power. For the same CBR, dedicated congestion control may specify a lower CR or a lower CR range than distributed congestion control. Additionally or alternatively, dedicated congestion control may allow a greater number of retransmissions than distributed congestion control without reducing transmit power.

[0121] At action 685, after configuring the dedicated transmission resource pool, the S / A UE 606a may utilize resources in the dedicated resource pool for transmission. The S / A UE 606a may perform sensing in the dedicated resource pool to determine resources for transmission based on the CBR / CR rules specified for the dedicated transmission resource pool. In some instances, the S / A UE 606a may utilize an abnormal transmission resource pool before completing sensing in the dedicated resource pool.

[0122] Figure 7 700 according to some aspects of the present disclosure. The controller UE 700 may be as described above in Figure 1 UE 115 in network 100 discussed in Figure 2-5 The PLC UE 204 discussed in Figure 6 As shown, the controller UE 700 may include a processor 702, a memory 704, a sidelink communication module 708, a transceiver 710 including a modem subsystem 712 and an RF unit 714, and one or more antennas 716. These elements may communicate with each other directly or indirectly, for example, via one or more buses.

[0123] The processor 702 may have various features as a special-purpose type of processor. For example, these may include a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein. The processor 702 may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration.

[0124] The memory 704 may include cache memory (e.g., cache memory of the processor 702), RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, solid-state memory devices, one or more hard disk drives, memristor-based arrays, other forms of volatile and non-volatile memory, or a combination of different types of memory. In some aspects, the memory 704 may include non-transitory computer-readable media. The memory 704 may store instructions 706. The instructions 706 may include: when executed by the processor 702, cause the processor 702 to perform the operations described herein (e.g., Figure 1-6 Instructions 706 may also be referred to as program code. The program code may be used to cause the wireless communication device to perform these operations, for example, by causing one or more processors (such as processor 702) to control or command the wireless communication device to do so. The terms "instructions" and "code" should be broadly interpreted to include any type of computer-readable statements. For example, the terms "instructions" and "code" may refer to one or more programs, routines, subroutines, functions, processes, etc. "Instructions" and "code" may include a single computer-readable statement or many computer-readable statements.

[0125] The sidelink communication module 708 may be implemented via hardware, software, or a combination thereof. For example, the sidelink communication module 708 may be implemented as a processor, circuit, and / or instructions 706 stored in the memory 704 and executed by the processor 702. In some examples, the sidelink communication module 708 may be integrated within the modem subsystem 712. For example, the sidelink communication module 708 may be implemented by a combination of software components (e.g., executed by a DSP or general purpose processor) and hardware components (e.g., logic gates and circuits) within the modem subsystem 712.

[0126] The sidelink communication module 708 may be used in various aspects of the present disclosure, for example, Figure 1-6Aspects of. The sidelink communication module 708 is configured to send a sidelink system information signal including an indication of a first preconfigured profile in a plurality of preconfigured profiles (e.g., preconfigured profile 420) (e.g., profile indication 412). In some aspects, the sidelink information signal may be a PSBCH signal (e.g., PSBCH 410) including an index referencing the first preconfigured profile. In some aspects, the sidelink information signal may be a PSBCH including an area ID identifying the first preconfigured profile. The sidelink communication module 708 may also be configured to transmit a first sidelink transmission based at least in part on the first preconfigured profile. The sidelink communication module 708 may also be configured to send a sidelink RMSI signal (e.g., sidelink RMSI signal 520) including an RRM configuration.

[0127] In some aspects, the first pre-configured profile includes as described above with reference to Figure 4 In some aspects, the RRM configuration in the sidelink RMS signal may override the regional configuration and / or congestion control configuration in the first pre-configured profile, and / or indicate one or more resource pools (different from the pre-configured resource pools indicated by the first pre-configured profile) and / or abnormal transmission resource pools, as described above with reference to Figure 5 discussed.

[0128] In some aspects, the sidelink communication module 708 can also be configured to: send synchronization signals to provide a reference synchronization source for one or more sidelink UEs (e.g., UE 115, S / A UE 206 and / or 606); establish a unicast connection with the sidelink UE; and / or configure the sidelink UE with a dedicated transmit resource pool (e.g., via PC5-RRC configuration).

[0129] As shown, the transceiver 710 may include a modem subsystem 712 and an RF unit 714. The transceiver 710 may be configured to communicate bidirectionally with other devices (e.g., UE 115 and / or UE 115, 204, 206, 604 and / or 606, and / or another core network element). The modem subsystem 712 may be configured to modulate and / or encode data according to an MCS (e.g., an LDPC coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.). The RF unit 714 may be configured to process (e.g., perform analog-to-digital conversion or digital-to-analog conversion, etc.) modulated / encoded data (e.g., PSBCH, sidelink RMSI, PSSCH, PSCCH, PSFCH, PC5-RRC configuration, control commands) from the modem subsystem 712 (for outbound transmissions) or modulated / encoded data originating from another source (e.g., UE 115) for transmission. The RF unit 714 may also be configured to perform analog beamforming in conjunction with digital beamforming. Although shown as being integrated together in the transceiver 710, the modem subsystem 712 and / or the RF unit 714 may be separate devices coupled together at the UE 115, 204, or 604 to enable the UE 115, 204, or 604 to communicate with other devices.

[0130] The RF unit 714 can provide modulated and / or processed data (e.g., data packets (or more generally, data messages that can contain one or more data packets and other information)) to the antenna 716 for transmission to one or more other devices. According to some aspects of the present disclosure, this can include, for example, sending information to complete attachment to the network and communicating with the resident UE 115. The antenna 716 can also receive data messages sent from other devices and can provide the received data messages for processing and / or demodulation at the transceiver 710. The transceiver 710 can provide the demodulated and decoded data (e.g., PSCCH, PSSCH, PSFCH, measurement data and / or sensor data records) to the sidelink communication module 708 for processing. The antenna 716 may include multiple antennas of similar design or different designs to maintain multiple transmission links.

[0131] In some aspects, the transceiver 710 is configured to communicate with components of the controller UE 700 to send a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles, and to transmit a first sidelink transmission with a second sidelink UE based at least in part on the first preconfigured profile.

[0132] In an aspect, the controller UE 700 may include multiple transceivers 710 that implement different RATs (e.g., NR and LTE). In an aspect, the controller UE 700 may include a single transceiver 710 that implements multiple RATs (e.g., NR and LTE). In an aspect, the transceiver 710 may include various components, where different combinations of components may implement different RATs.

[0133] Figure 8 800 is a block diagram of an exemplary non-controller UE 800 according to some aspects of the present disclosure. The non-controller UE 800 may be as described above with respect to Figure 1 The UE 115 discussed above Figure 2-5 The S / A UE 206 discussed in Figure 6 As shown, the non-controller UE 800 may include a processor 802, a memory 804, a sidelink communication module 808, a transceiver 810 including a modem subsystem 812 and a radio frequency (RF) unit 814, and one or more antennas 816. These elements may communicate with each other directly or indirectly, for example, via one or more buses.

[0134] The processor 802 may include a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein. The processor 802 may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration.

[0135] The memory 804 may include cache memory (e.g., cache memory of the processor 802), random access memory (RAM), magnetoresistive RAM (MRAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, a solid-state memory device, a hard drive, other forms of volatile and non-volatile memory, or a combination of different types of memory. In an aspect, the memory 804 includes a non-transitory computer-readable medium. The memory 804 may store instructions 806 or have instructions 806 recorded thereon. The instructions 806 may include: when executed by the processor 802, the processor 802 performs the various aspects of the present disclosure described herein with reference to the UE 115 (e.g., Figure 1-6Instructions 806 may also be referred to as program code, which may be broadly interpreted as including any type of computer-readable statements, such as those described above. Figure 7 discussed.

[0136] The sidelink communication module 808 may be implemented via hardware, software, or a combination thereof. For example, the sidelink communication module 808 may be implemented as a processor, circuit, and / or instructions 806 stored in the memory 804 and executed by the processor 802. In some examples, the sidelink communication module 808 may be integrated within the modem subsystem 812. For example, the sidelink communication module 808 may be implemented by a combination of software components (e.g., executed by a DSP or general purpose processor) and hardware components (e.g., logic gates and circuits) within the modem subsystem 812.

[0137] The sidelink communication module 808 may be used in various aspects of the present disclosure, for example, Figure 1-6 Aspects of. The sidelink communication module 808 is configured to receive a sidelink system information signal including an indication of a first preconfigured profile (e.g., profile indication 412) of a plurality of preconfigured profiles (e.g., preconfigured profile 420) from a second sidelink UE (e.g., UE 115 and / or PLC UE 204 and / or 604). Multiple preconfigured profiles may be stored in the memory 804. In some aspects, the sidelink information signal may be a PSBCH signal (e.g., PSBCH 410) including an index referencing the first preconfigured profile. In some aspects, the sidelink information signal may be a PSBCH including an area ID identifying the first preconfigured profile. The sidelink communication module 808 may also be configured to transmit a first sidelink transmission based at least in part on the first preconfigured profile. The sidelink communication module 808 may also be configured to receive a sidelink RMSI signal (e.g., sidelink RMSI signal 520) including an RRM configuration. The sidelink communication module 808 may also be configured to synchronize to the second sidelink UE (eg, timing synchronization) prior to transmitting the first sidelink transmission.

[0138] In some aspects, the first pre-configured profile includes as described above with reference to Figure 4 In some aspects, the RRM configuration in the sidelink RMS signal may override the regional configuration and / or congestion control configuration in the first pre-configured profile, and / or indicate one or more resource pools (different from the pre-configured resource pools indicated by the first pre-configured profile) and / or abnormal transmission resource pools, as described above with reference to Figure 5 discussed.

[0139] In some aspects, the sidelink communication module 808 can also be configured to: establish a unicast connection with a second sidelink UE; send a second sidelink transmission using a first resource in an exception transmission resource pool based on the unicast connection; receive a configuration for a dedicated resource pool for the second sidelink UE from the second sidelink UE (e.g., via PC5-RRC configuration), and / or use a second resource in the dedicated resource pool to transmit a third sidelink transmission.

[0140] In some other aspects, the sidelink communication module 808 can also be configured to: start a timer (e.g., timer 602) based on the non-controller UE 800 not having a unicast connection with the second sidelink UE and in response to receiving a sidelink RMSI signal; transmit a second sidelink transmission based on the RRM configuration while the timer is running; fall back to the preconfigured profile after the timer expires; and transmit a third sidelink transmission using the first preconfigured profile based on the expiration of the timer.

[0141] As shown, the transceiver 810 may include a modem subsystem 812 and an RF unit 814. The transceiver 810 may be configured to communicate bidirectionally with other devices (e.g., BS 105 and / or UE 115, 204, 206, 604, and / or 606). The modem subsystem 812 may be configured to modulate and / or encode data from the memory 804 and / or the sidelink communication module 808 according to a modulation and coding scheme (MCS) (e.g., a low-density parity check (LDPC) coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.). The RF unit 814 may be configured to process (e.g., perform analog-to-digital conversion or digital-to-analog conversion, etc.) modulated / encoded data (e.g., PSCCH, PSSCH, PSFCH, measurement data, and / or sensor data records) from the modem subsystem 812 (for outbound transmissions) or modulated / encoded data originating from another source (e.g., UE 115 or BS 105) for transmission. The RF unit 814 may also be configured to perform analog beamforming in conjunction with digital beamforming.Although shown as integrated together in the transceiver 810, the modem subsystem 812 and the RF unit 814 may be separate devices coupled together at the UE 115 to enable the UE 115 to communicate with other devices.

[0142] The RF unit 814 can provide modulated and / or processed data (e.g., data packets (or more generally, data messages that can include one or more data packets and other information)) to the antenna 816 for transmission to one or more other devices. The antenna 816 can also receive data messages sent from other devices. The antenna 816 can provide the received data message for processing and / or demodulation at the transceiver 810. The transceiver 810 can provide demodulated and decoded data (e.g., PSBCH, sidelink RMSI, PSSCH, PSCCH, PSFCH, PC5-RRC configuration, control commands) for processing. The antenna 816 may include multiple antennas with similar or different designs to maintain multiple transmission links. The RF unit 814 can configure the antenna 816.

[0143] In some aspects, the transceiver 810 is configured to communicate with components of the non-controller UE 800 to receive a sidelink system information signal including an indication of a first preconfigured profile among multiple preconfigured profiles from a second sidelink UE, and to transmit a first sidelink transmission based at least in part on the first preconfigured profile.

[0144] In an aspect, a non-controller UE 800 may include multiple transceivers 810 that implement different RATs (e.g., NR and LTE). In an aspect, a non-controller UE 800 may include a single transceiver 810 that implements multiple RATs (e.g., NR and LTE). In an aspect, the transceiver 810 may include various components, where different combinations of components may implement different RATs.

[0145] Fig. 9 900 is a flow chart of a sidelink communication method 900 according to some aspects of the present disclosure. Aspects of the method 900 may be performed by a computing device (e.g., a processor, a processing circuit, and / or other appropriate components) of a wireless communication device or other appropriate means for performing steps. For example, a wireless communication device (e.g., UE 115, PLC UE 204, PLC UE 604, or controller UE 700) may utilize one or more components (e.g., processor 702, memory 704, sidelink communication module 708, transceiver 710, modem 712, and / or one or more antennas 716) to perform the steps of the method 900. The method 900 may be implemented as described above in Figure 1-6 As shown, method 900 includes a plurality of enumerated steps, but aspects of method 900 may include additional steps before, after, and between the enumerated steps. In some aspects, one or more of the enumerated steps may be omitted or performed in a different order.

[0146] At block 910, a first sidelink UE transmits a sidelink system information signal including an indication of a first preconfigured profile (e.g., profile indication 412) of a plurality of preconfigured profiles (e.g., preconfigured profiles 420). The first sidelink UE may correspond to UE 115, PLC UE 204, PLC UE 604, or controller UE 700. In some examples, the first sidelink UE may utilize one or more components (e.g., processor 702, memory 704, sidelink communication module 708, transceiver 710, modem 712, and / or one or more antennas 716) to transmit the sidelink system information signal including an indication of a first preconfigured profile of the plurality of preconfigured profiles.

[0147] In some aspects, as part of transmitting the sidelink system information signal, the first sidelink UE may transmit a PSBCH signal (e.g., PSBCH 410) including an index referencing the first preconfigured profile. In some instances, the first sidelink UE may transmit the PSBCH signal in a preconfigured frequency subchannel that may be known to other sidelink UEs. In some aspects, as part of transmitting the sidelink system information signal, the first sidelink UE may transmit a PSBCH signal including a regional ID identifying the first preconfigured profile.

[0148] At box 920, the first sidelink UE transmits a first sidelink transmission with the second sidelink UE based at least in part on the first preconfigured profile. The second sidelink UE may correspond to UE 115, S / A UE 206, S / A UE 604, or non-controller UE 800. In some instances, the first sidelink UE may utilize one or more components (such as processor 702, memory 704, sidelink communication module 708, transceiver 710, modem 712, and / or one or more antennas 716) to transmit the first sidelink transmission with the second sidelink UE. In some instances, the first sidelink UE may send the first sidelink transmission to the second sidelink UE. In some instances, the first sidelink UE may receive the first sidelink transmission from the second sidelink UE. The first sidelink transmission may include PSCCH, PSSCH, and / or PSFCH transmissions.

[0149] In some aspects, the first pre-configured profile includes at least one of a frequency band configuration or a radio resource configuration, e.g., as described above with reference to Figure 4As discussed. In some aspects, the first pre-configured profile includes a resource radio configuration indicating at least one of a sidelink transmit resource pool or a sidelink receive resource pool. As part of transmitting the first sidelink transmission, the first sidelink UE may use resources in at least one of the sidelink transmit resource pool or the sidelink receive resource pool (e.g., Figure 3 sidelink resource 306) to transmit the first sidelink transmission.

[0150] In some aspects, the first sidelink UE may also send a sidelink RMSI signal (eg, RMSI signal 520) including an RRM configuration, for example, as described above with reference to Figure 5 as discussed. In some aspects, the RRM configuration overrides the region configuration in the first preconfiguration profile, the RRM configuration including at least one of geographic coordinate information, region length, region width, or region to resource pool mapping. In some aspects, the RRM configuration overrides the congestion control configuration in the first preconfiguration profile, the RRM configuration including at least one of a CBR or a CR associated with a preconfigured resource pool indicated by the first preconfiguration profile. In some aspects, the RRM configuration indicates one or more resource pools different from the preconfigured resource pool indicated by the first preconfiguration profile. In some aspects, the RRM configuration also indicates multiple congestion control parameters for a first resource pool in the one or more resource pools, wherein each of the multiple congestion control parameters is associated with a different QoS. In some aspects, the RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool. In some aspects, the first sensing rule allows random subchannel selection in the abnormal transmission resource pool without sensing. Sensing can be as described above with reference to Figure 3 and 5 In some aspects, the abnormal transmission resource pool is in an unlicensed spectrum band, and the first sensing rule indicates CSMA-based LBT for accessing the abnormal transmission resource pool. LBT can be based on energy detection, as described above with reference to Figure 1 discussed.

[0151] In some aspects, the first sidelink UE may also send a synchronization signal to provide a reference synchronization source for one or more sidelink UEs including a second sidelink UE. In some aspects, the first sidelink UE may also establish a unicast connection with the second sidelink UE. For example, the first sidelink UE may exchange connection requests and connection responses with the second sidelink UE. In some aspects, the first sidelink UE may also send a configuration for a dedicated resource pool for the second sidelink UE to the second sidelink UE based on the unicast connection. In some aspects, as part of sending the configuration for the dedicated resource pool, the first sidelink UE may send an RRC configuration including a configuration for the dedicated resource pool to the second sidelink UE.

[0152] Fig.10 1 is a flow chart of a sidelink communication method 1000 according to some aspects of the present disclosure. Aspects of method 1000 may be performed by a computing device (e.g., a processor, processing circuitry, and / or other appropriate components) of a wireless communication device or other appropriate means for performing steps. For example, a wireless communication device (e.g., UE 115, S / A UE 206, S / A UE 606, or non-controller UE 800) may utilize one or more components (e.g., processor 802, memory 804, sidelink communication module 808, transceiver 810, modem 812, and / or one or more antennas 816) to perform the steps of method 1000. Method 1000 may be implemented as described above in Figure 1-6 As shown, method 1000 includes a plurality of enumerated steps, but aspects of method 1000 may include additional steps before, after, and between the enumerated steps. In some aspects, one or more of the enumerated steps may be omitted or performed in a different order.

[0153] At block 1010, a first sidelink UE receives a sidelink system information signal including an indication of a first preconfigured profile (e.g., profile indication 412) of a plurality of preconfigured profiles (e.g., preconfigured profiles 420) from a second sidelink UE. The first sidelink UE may correspond to UE 115, S / A UE 206, S / A UE 606, or non-controller UE 800. In some examples, the first sidelink UE may utilize one or more components (e.g., processor 802, memory 804, sidelink communication module 808, transceiver 810, modem 812, and / or one or more antennas 816) to receive the sidelink system information signal including an indication of a first preconfigured profile of the plurality of preconfigured profiles.

[0154] In some aspects, as part of receiving the sidelink system information signal, the first sidelink UE may receive a PSBCH signal (e.g., PSBCH signal 410) from the second sidelink UE including an index referencing the first preconfigured profile. In some instances, the first sidelink UE may monitor a certain frequency subchannel for the PSBCH based on a preconfiguration (e.g., a default preconfiguration). In some aspects, as part of receiving the sidelink system information signal, the first sidelink UE may receive a PSBCH signal from the second sidelink UE including a regional ID associated with the first preconfigured profile.

[0155] At box 1020, the first sidelink UE transmits a first sidelink transmission based at least in part on the first preconfigured profile. The second sidelink UE may correspond to UE 115, PLC UE 204, PLC UE 604, or controller UE 700. In some instances, the first sidelink UE may utilize one or more components (such as processor 802, memory 804, sidelink communication module 808, transceiver 810, modem 812, and / or one or more antennas 816) to transmit the first sidelink transmission with the second sidelink UE. The first sidelink transmission may include PSCCH, PSSCH, and / or PSFCH transmissions. In some instances, the first sidelink UE may send the first sidelink transmission to the second sidelink UE or a different sidelink UE (e.g., UE 115, 204, 206, 604, 606). In some instances, the first sidelink UE may receive the first sidelink transmission from the second sidelink UE or a different sidelink UE.

[0156] In some aspects, the first pre-configured profile includes at least one of a frequency band configuration or a radio resource configuration, e.g., as described above with reference to Figure 4 In some aspects, the first pre-configured profile includes a radio resource configuration indicating at least one of a sidelink transmit resource pool or a sidelink receive resource pool. In some aspects, as part of transmitting the first sidelink transmission, the first sidelink UE may use resources (e.g., Figure 3 sidelink resource 306) to transmit the first sidelink transmission.

[0157] In some aspects, the first sidelink UE may also receive a sidelink RMSI signal (eg, sidelink RMSI signal 520) including an RRM configuration from a second measurement UE, for example, as described above with reference to Figure 5as discussed. In some aspects, the RRM configuration overrides the region configuration in the first preconfiguration profile, the RRM configuration including at least one of geographic coordinate information, region length, region width, or region to resource pool mapping. In some aspects, the RRM configuration overrides the congestion control configuration in the first preconfiguration profile, the RRM configuration including at least one of a CBR or a CR associated with a preconfigured resource pool indicated by the first preconfiguration profile. In some aspects, the RRM configuration indicates one or more resource pools different from the preconfigured resource pool indicated by the first preconfiguration profile. In some aspects, the RRM configuration also indicates multiple congestion control parameters for a first resource pool in the one or more resource pools, and wherein each of the multiple congestion control parameters is associated with a different QoS. In some aspects, the RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool. In some aspects, the first sensing rule allows random subchannel selection in the abnormal transmission resource pool without sensing. Sensing can be as described above with reference to Figure 3 and 5 In some aspects, the abnormal transmission resource pool is in an unlicensed spectrum band, and the first sensing rule indicates CSMA-based LBT for accessing the abnormal transmission resource pool. LBT can be based on energy detection, as described above with reference to Figure 1 discussed.

[0158] In some aspects, the first sidelink UE may also establish a unicast connection with the second sidelink UE. The first sidelink UE may also transmit a second sidelink transmission using a first resource in an abnormal transmission resource pool based on the unicast connection. In some aspects, as part of transmitting the second sidelink transmission, the first sidelink UE may transmit the second sidelink transmission using a first resource in an abnormal transmission resource pool based on at least one of sensing in a normal transmission resource pool, a priority of the second sidelink transmission, or a duration of the second sidelink transmission. Sensing in a normal transmission resource pool may refer to SCI sensing, as described above with reference to Figure 3 and 5 As discussed. In some aspects, the first sidelink UE may also receive, from the second sidelink UE, a configuration for a dedicated resource pool for the second sidelink UE. The first sidelink UE may transmit a third sidelink transmission using a second resource in the dedicated resource pool based on sensing. In some aspects, as part of receiving the configuration for the dedicated resource pool, the first sidelink UE may receive, from the second sidelink UE, an RRC configuration including a configuration for the dedicated resource pool. In some aspects, the first sidelink UE may also perform sensing in the dedicated resource pool. Sensing in the normal transmit resource pool may refer to SCI sensing, as described above with reference to Figure 3 and 5 As part of transmitting the second sidelink transmission, the first sidelink UE may transmit the second sidelink transmission using the first resource in the abnormal transmission resource pool before completing the sensing in the dedicated resource pool. The sensing in the dedicated resource pool may be as described above with reference to Figure 3 and 5 Discussed SCI sensing. In some aspects, as part of a third sidelink transmission, the first sidelink UE may transmit a third sidelink transmission using a second resource in a dedicated resource pool based on the sensing.

[0159] In some aspects, the first sidelink UE may also transmit a second sidelink transmission based on an RRM configuration received in a sidelink RMSI signal. In some aspects, the first sidelink UE may also start a timer (e.g., timer 602) in response to receiving the sidelink RMSI signal. The second sidelink transmission transmitted using the RRM configuration may be based on the timer being ongoing, and the first sidelink transmission transmitted using the first preconfigured profile may be based on the expiration of the timer. In some aspects, the timer may be started based on the first sidelink UE not having a unicast connection with the second sidelink UE.

[0160] In some aspects, the first sidelink UE can synchronize to the second sidelink UE based on the sidelink system information signal.For example, the UE can adjust the reference timing at the UE to align to the symbol timing (e.g., symbol boundary) of the sidelink information signal.

[0161] Information and signals may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0162] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, a DSP, an ASIC, an 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 (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0163] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, these functions can be stored as one or more instructions or codes on a computer-readable medium or transmitted on a computer-readable medium. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. The features used to implement the functions can also be physically located at various locations, including being distributed so that the parts of the functions are implemented at different physical locations. In addition, as used herein (including in the claims), as used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of"), "or" indicates an inclusive list, so that, 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 and B and C).

[0164] As those skilled in the art will now appreciate, and depending on the specific application at hand, many modifications, substitutions and variations may be made in and to the materials, devices, configurations and methods of use of the apparatus of the present disclosure without departing from the spirit and scope of the present disclosure. In view of this, the scope of the present disclosure should not be limited to the scope of the specific embodiments shown and described herein (as they are by way of example only), but should be fully equivalent to the scope of the claims appended hereto and their functional equivalents.

Claims

1. A method of wireless communication performed by a controller user equipment (UE), comprising: transmitting a sidelink system information signal including an indication of a first preconfigured profile among a plurality of preconfigured profiles, wherein the sidelink system information signal comprises: a physical sidelink broadcast channel (PSBCH) signal including an index referencing the first preconfigured profile and the indication of the first preconfigured profile, wherein the first preconfigured profile comprises a frequency band configuration, and wherein the PSBCH signal is transmitted on a frequency band selected from a set of preconfigured frequency bands based on interference; and A first sidelink transmission is communicated with a non-controller UE based at least in part on the first preconfigured profile.

2. The method according to claim 1, wherein: The PSBCH signal includes: A region identifier (ID) identifying the first preconfigured profile.

3. The method according to claim 1, wherein: The first pre-configured profile also includes a radio resource configuration.

4. The method according to claim 3, wherein: The first pre-configured profile includes the radio resource configuration indicating at least one of a sidelink transmission resource pool or a sidelink reception resource pool.

5. The method according to claim 4, wherein: The transmitting the first sidelink transmission comprises: The first sidelink transmission is transmitted using resources in said at least one of the sidelink transmit resource pool or the sidelink receive resource pool.

6. The method according to claim 1, further comprising: A sidelink Remaining Minimum System Information (RMSI) signal including a Radio Resource Management (RRM) configuration is sent.

7. The method according to claim 6, wherein: The RRM configuration covers the zone configuration in the first pre-configuration profile, and the RRM configuration includes at least one of geographic coordinate information, zone length, zone width, or zone to resource pool mapping.

8. The method according to claim 6, wherein: The RRM configuration overrides the congestion control configuration in the first preconfigured profile, and the RRM configuration includes at least one of a channel busy ratio (CBR) or a channel access ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile.

9. The method according to claim 6, wherein: The RRM configuration indicates one or more resource pools different from the preconfigured resource pools indicated by the first preconfiguration profile.

10. The method according to claim 9, wherein: The RRM configuration further indicates a plurality of congestion control parameters for a first resource pool of the one or more resource pools, and wherein each congestion control parameter of the plurality of congestion control parameters is associated with a different quality of service (QoS).

11. The method according to claim 6, wherein: The RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool.

12. The method according to claim 11, wherein: The first sensing rule allows random sub-channel selection in the abnormal transmission resource pool without performing sensing.

13. The method according to claim 11, wherein: The exception transmission resource pool is in an unlicensed spectrum band, and wherein the first sensing rule indicates a Carrier Sense Multiple Access / Collision Avoidance (CSMA / CA) based Listen Before Talk (LBT) for accessing the exception transmission resource pool.

14. The method according to claim 1, further comprising: A synchronization signal is sent to provide a reference synchronization source for one or more UEs including the non-controller UE.

15. The method according to claim 1, further comprising: A unicast connection is established with the non-controller UE.

16. The method according to claim 15, further comprising: A configuration for a dedicated resource pool for the non-controller UE is sent to the non-controller UE based on the unicast connection.

17. The method according to claim 16, wherein: The sending the configuration for the dedicated resource pool includes: A sidelink radio resource control (RRC) configuration including the configuration for the dedicated resource pool is sent to the non-controller UE.

18. A method of wireless communication performed by a non-controller user equipment (UE), comprising: receiving, from a controller UE, a sidelink system information signal including an indication of a first preconfigured profile among a plurality of preconfigured profiles, wherein the sidelink system information signal includes: a physical sidelink broadcast channel (PSBCH) signal including an index referencing the first preconfigured profile and the indication of the first preconfigured profile, wherein the first preconfigured profile includes a frequency band configuration, and wherein the PSBCH signal is transmitted on a frequency band selected from a set of preconfigured frequency bands based on interference; and A first sidelink transmission is transmitted based at least in part on the first preconfigured profile.

19. The method according to claim 18, wherein: The PSBCH signal includes: A region identifier (ID) associated with the first preconfigured profile.

20. The method according to claim 18, wherein: The first pre-configured profile also includes a radio resource configuration.

21. The method according to claim 20, wherein: The first pre-configured profile includes the radio resource configuration indicating at least one of a sidelink transmission resource pool or a sidelink reception resource pool.

22. The method according to claim 21, wherein: The transmitting the first sidelink transmission comprises: The first sidelink transmission is transmitted using resources in said at least one of the sidelink transmit resource pool or the sidelink receive resource pool.

23. The method of claim 18, further comprising: A sidelink remaining minimum system information (RMSI) signal including a radio resource management (RRM) configuration is received from the controller UE.

24. The method according to claim 23, wherein: The RRM configuration covers the zone configuration in the first pre-configuration profile, and the RRM configuration includes at least one of geographic coordinate information, zone length, zone width, or zone to resource pool mapping.

25. The method according to claim 23, wherein: The RRM configuration overrides the congestion control configuration in the first preconfigured profile, and the RRM configuration includes at least one of a channel busy ratio (CBR) or a channel access ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile.

26. The method of claim 23, wherein: The RRM configuration indicates one or more resource pools different from the preconfigured resource pools indicated by the first preconfiguration profile.

27. The method according to claim 26, wherein: The RRM configuration further indicates a plurality of congestion control parameters for a first resource pool of the one or more resource pools, and wherein each congestion control parameter of the plurality of congestion control parameters is associated with a different quality of service (QoS).

28. The method of claim 23, wherein: The RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool.

29. The method according to claim 28, wherein: The first sensing rule allows random sub-channel selection in the abnormal transmission resource pool without performing sensing.

30. The method of claim 28, wherein: The exception transmission resource pool is in an unlicensed spectrum band, and wherein the first sensing rule indicates a Carrier Sense Multiple Access / Collision Avoidance (CSMA / CA) based Listen Before Talk (LBT) for accessing the exception transmission resource pool.

31. The method of claim 28, further comprising: Establishing a unicast connection with the controller UE; as well as A second sidelink transmission is transmitted based on the unicast connection using first resources in the exception transmit resource pool.

32. The method according to claim 31, wherein: The transmitting the second sidelink transmission comprises: The second sidelink transmission is transmitted using the first resource in the abnormal transmission resource pool based on at least one of sensing in the normal transmission resource pool, a priority of the second sidelink transmission, or a duration of the second sidelink transmission.

33. The method of claim 32, further comprising: receiving, from the controller UE, a configuration for a dedicated resource pool for the controller UE; as well as A third sidelink transmission is transmitted using second resources in the dedicated resource pool based on the sensing.

34. The method of claim 33, wherein: The receiving the configuration for the dedicated resource pool comprises: A radio resource control (RRC) configuration including the configuration for the dedicated resource pool is received from the controller UE.

35. The method of claim 33, further comprising: performing sensing in the dedicated resource pool, Wherein, transmitting the second sidelink transmission comprises: before completing the sensing in the dedicated resource pool, transmitting the second sidelink transmission using the first resource in the exception transmit resource pool, and Wherein, transmitting the third sidelink transmission comprises: The third sidelink transmission is transmitted using the second resource in the dedicated resource pool based on the sensing.

36. The method of claim 23, further comprising: A second sidelink transmission is transmitted based on the RRM configuration.

37. The method of claim 36, further comprising: starting a timer in response to receiving the sidelink RMSI signal, Wherein, transmitting the second sidelink transmission comprises: Based on the timer being ongoing, transmitting the second sidelink transmission using the RRM configuration, and wherein the transmitting the first sidelink transmission comprises: Based on expiration of the timer, the first sidelink transmission is transmitted using the first preconfigured profile.

38. The method of claim 37, wherein: The starting the timer comprises: The timer is also started based on a determination that the non-controller UE does not have a unicast connection with the controller UE.

39. The method of claim 18, further comprising: The controller UE is synchronized to the controller UE based on the sidelink system information signal.

40. A controller user equipment (UE), comprising: A transceiver configured to: transmitting a sidelink system information signal including an indication of a first preconfigured profile among a plurality of preconfigured profiles, wherein the sidelink system information signal comprises: a physical sidelink broadcast channel (PSBCH) signal including an index referencing the first preconfigured profile and the indication of the first preconfigured profile, wherein the first preconfigured profile comprises a frequency band configuration, and wherein the PSBCH signal is transmitted on a frequency band selected from a set of preconfigured frequency bands based on interference; and A first sidelink transmission is communicated with a non-controller UE based at least in part on the first preconfigured profile.

41. The controller UE according to claim 40, wherein: The PSBCH signal includes: A region identifier (ID) identifying the first preconfigured profile.

42. The controller UE according to claim 40, wherein: The first pre-configured profile also includes a radio resource configuration.

43. The controller UE according to claim 42, wherein: The first pre-configured profile includes the radio resource configuration indicating at least one of a sidelink transmission resource pool or a sidelink reception resource pool.

44. The controller UE according to claim 43, wherein: The transceiver configured to transmit the first sidelink transmission is further configured to: The first sidelink transmission is transmitted using resources in said at least one of the sidelink transmit resource pool or the sidelink receive resource pool.

45. The controller UE according to claim 40, wherein: The transceiver is further configured to: A sidelink Remaining Minimum System Information (RMSI) signal including a Radio Resource Management (RRM) configuration is sent.

46. ​​The controller UE according to claim 45, wherein: The RRM configuration covers the zone configuration in the first pre-configuration profile, and the RRM configuration includes at least one of geographic coordinate information, zone length, zone width, or zone to resource pool mapping.

47. The controller UE according to claim 45, wherein: The RRM configuration overrides the congestion control configuration in the first preconfigured profile, and the RRM configuration includes at least one of a channel busy ratio (CBR) or a channel access ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile.

48. The controller UE according to claim 45, wherein: The RRM configuration indicates one or more resource pools different from the preconfigured resource pools indicated by the first preconfiguration profile.

49. The controller UE according to claim 48, wherein: The RRM configuration further indicates a plurality of congestion control parameters for a first resource pool of the one or more resource pools, and wherein each congestion control parameter of the plurality of congestion control parameters is associated with a different quality of service (QoS).

50. The controller UE according to claim 45, wherein: The RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool.

51. The controller UE according to claim 50, wherein: The first sensing rule allows random sub-channel selection in the abnormal transmission resource pool without performing sensing.

52. The controller UE according to claim 50, wherein: The exception transmission resource pool is in an unlicensed spectrum band, and wherein the first sensing rule indicates a Carrier Sense Multiple Access / Collision Avoidance (CSMA / CA) based Listen Before Talk (LBT) for accessing the exception transmission resource pool.

53. The controller UE according to claim 40, wherein: The transceiver is further configured to: A synchronization signal is sent to provide a reference synchronization source for one or more UEs including the non-controller UE.

54. The controller UE according to claim 40, further comprising: A processor is configured to establish a unicast connection with the non-controller UE.

55. The controller UE according to claim 54, wherein: The transceiver is further configured to: A configuration for a dedicated resource pool for the non-controller UE is sent to the non-controller UE based on the unicast connection.

56. The controller UE according to claim 55, wherein: The transceiver configured to send the configuration for the dedicated resource pool is further configured to: A sidelink radio resource control (RRC) configuration including the configuration for the dedicated resource pool is sent to the non-controller UE.

57. A non-controller user equipment (UE), comprising: A transceiver configured to: receiving, from a controller UE, a sidelink system information signal including an indication of a first preconfigured profile among a plurality of preconfigured profiles, wherein the sidelink system information signal includes: a physical sidelink broadcast channel (PSBCH) signal including an index referencing the first preconfigured profile and the indication of the first preconfigured profile, wherein the first preconfigured profile includes a frequency band configuration, and wherein the PSBCH signal is transmitted on a frequency band selected from a set of preconfigured frequency bands based on interference; and A first sidelink transmission is transmitted based at least in part on the first preconfigured profile.

58. The non-controller UE of claim 57, wherein: The PSBCH signal includes: A region identifier (ID) associated with the first preconfigured profile.

59. The non-controller UE of claim 57, wherein: The first pre-configured profile also includes a radio resource configuration.

60. The non-controller UE of claim 59, wherein: The first pre-configured profile includes the radio resource configuration indicating at least one of a sidelink transmission resource pool or a sidelink reception resource pool.

61. The non-controller UE of claim 60, wherein: The transceiver configured to transmit the first sidelink transmission is further configured to: The first sidelink transmission is transmitted using resources in said at least one of the sidelink transmit resource pool or the sidelink receive resource pool.

62. The non-controller UE of claim 57, wherein: The transceiver is further configured to: A sidelink remaining minimum system information (RMSI) signal including a radio resource management (RRM) configuration is received from the controller UE.

63. The non-controller UE of claim 62, wherein: The RRM configuration covers the zone configuration in the first pre-configuration profile, and the RRM configuration includes at least one of geographic coordinate information, zone length, zone width, or zone to resource pool mapping.

64. The non-controller UE of claim 62, wherein: The RRM configuration overrides the congestion control configuration in the first preconfigured profile, and the RRM configuration includes at least one of a channel busy ratio (CBR) or a channel access ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile.

65. The non-controller UE of claim 62, wherein: The RRM configuration indicates one or more resource pools different from the preconfigured resource pools indicated by the first preconfiguration profile.

66. The non-controller UE of claim 65, wherein: The RRM configuration further indicates a plurality of congestion control parameters for a first resource pool of the one or more resource pools, and wherein each congestion control parameter of the plurality of congestion control parameters is associated with a different quality of service (QoS).

67. The non-controller UE of claim 62, wherein: The RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool.

68. The non-controller UE of claim 67, wherein: The first sensing rule allows random sub-channel selection in the abnormal transmission resource pool without performing sensing.

69. The non-controller UE of claim 67, wherein: The exception transmission resource pool is in an unlicensed spectrum band, and wherein the first sensing rule indicates a Carrier Sense Multiple Access / Collision Avoidance (CSMA / CA) based Listen Before Talk (LBT) for accessing the exception transmission resource pool.

70. The non-controller UE of claim 67, further comprising: A processor configured to: establish a unicast connection with the controller UE, Wherein, the transceiver is further configured as: A second sidelink transmission is transmitted based on the unicast connection using first resources in the exception transmit resource pool.

71. The non-controller UE of claim 70, wherein: The transceiver configured to transmit the second sidelink transmission is further configured to: The second sidelink transmission is transmitted using the first resource in the abnormal transmission resource pool based on at least one of sensing in the normal transmission resource pool, a priority of the second sidelink transmission, or a duration of the second sidelink transmission.

72. The non-controller UE of claim 71, wherein: The transceiver is further configured to: receiving, from the controller UE, a configuration for a dedicated resource pool for the controller UE; and A third sidelink transmission is transmitted using second resources in the dedicated resource pool based on the sensing.

73. The non-controller UE of claim 72, wherein: The transceiver configured to receive the configuration for the dedicated resource pool is further configured to: A radio resource control (RRC) configuration including the configuration for the dedicated resource pool is received from the controller UE.

74. The non-controller UE of claim 72, wherein: The processor is further configured to: performing sensing in the dedicated resource pool, The transceiver configured to transmit the second sidelink transmission is further configured to: before completing the sensing in the dedicated resource pool, transmitting the second sidelink transmission using the first resource in the exception transmit resource pool, and The transceiver configured to transmit the third sidelink transmission is further configured to: The third sidelink transmission is transmitted using the second resource in the dedicated resource pool based on the sensing.

75. The non-controller UE of claim 62, wherein: The transceiver is further configured to: A second sidelink transmission is transmitted based on the RRM configuration.

76. The non-controller UE of claim 75, further comprising: a processor configured to: start a timer in response to receiving the sidelink RMSI signal, Wherein, the transceiver configured to transmit the second sidelink transmission is further configured to: transmitting the second sidelink transmission using the RRM configuration based on the timer being ongoing, and wherein the transceiver configured to transmit the first sidelink transmission is further configured to: Based on expiration of the timer, the first sidelink transmission is transmitted using the first preconfigured profile.

77. The non-controller UE of claim 76, wherein: The processor configured to start the timer is further configured to: The timer is also started based on a determination that the non-controller UE does not have a unicast connection with the controller UE.

78. The non-controller UE of claim 57, further comprising: A processor is configured to synchronize to the controller UE based on the sidelink system information signal.

79. A non-transitory computer readable medium having program code recorded thereon, the program code comprising: Code for causing a controller user equipment (UE) to transmit a sidelink system information signal including an indication of a first preconfigured profile among a plurality of preconfigured profiles, wherein the sidelink system information signal comprises: a physical sidelink broadcast channel (PSBCH) signal including an index referencing the first preconfigured profile and the indication of the first preconfigured profile, wherein the first preconfigured profile comprises a frequency band configuration, and wherein the PSBCH signal is transmitted on a frequency band selected from a set of preconfigured frequency bands based on interference; and Code for causing the controller UE to communicate a first sidelink transmission with a non-controller UE based at least in part on the first preconfigured profile.

80. The non-transitory computer readable medium of claim 79, wherein: The PSBCH signal includes: A region identifier (ID) identifying the first preconfigured profile.

81. The non-transitory computer readable medium of claim 79, wherein: The first pre-configured profile also includes a radio resource configuration.

82. The non-transitory computer readable medium of claim 81, wherein: The first pre-configured profile includes the radio resource configuration indicating at least one of a sidelink transmission resource pool or a sidelink reception resource pool.

83. The non-transitory computer readable medium of claim 82, wherein: The code for causing the controller UE to transmit the first sidelink transmission is further configured to: The first sidelink transmission is transmitted using resources in said at least one of the sidelink transmit resource pool or the sidelink receive resource pool.

84. The non-transitory computer readable medium of claim 79, wherein: The program code also includes: Code for causing the controller UE to transmit a sidelink remaining minimum system information (RMSI) signal including a radio resource management (RRM) configuration.

85. The non-transitory computer readable medium of claim 84, wherein: The RRM configuration covers the zone configuration in the first pre-configuration profile, and the RRM configuration includes at least one of geographic coordinate information, zone length, zone width, or zone to resource pool mapping.

86. The non-transitory computer readable medium of claim 84, wherein: The RRM configuration overrides the congestion control configuration in the first preconfigured profile, and the RRM configuration includes at least one of a channel busy ratio (CBR) or a channel access ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile.

87. The non-transitory computer readable medium of claim 84, wherein: The RRM configuration indicates one or more resource pools different from the preconfigured resource pools indicated by the first preconfiguration profile.

88. The non-transitory computer readable medium of claim 87, wherein: The RRM configuration further indicates a plurality of congestion control parameters for a first resource pool of the one or more resource pools, and wherein each congestion control parameter of the plurality of congestion control parameters is associated with a different quality of service (QoS).

89. The non-transitory computer readable medium of claim 84, wherein: The RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool.

90. The non-transitory computer readable medium of claim 89, wherein: The first sensing rule allows random sub-channel selection in the abnormal transmission resource pool without performing sensing.

91. The non-transitory computer readable medium of claim 89, wherein: The exception transmission resource pool is in an unlicensed spectrum band, and wherein the first sensing rule indicates a Carrier Sense Multiple Access / Collision Avoidance (CSMA / CA) based Listen Before Talk (LBT) for accessing the exception transmission resource pool.

92. The non-transitory computer readable medium of claim 79, wherein: The program code also includes: Code for causing the controller UE to transmit a synchronization signal to provide a reference synchronization source for one or more UEs including the non-controller UE.

93. The non-transitory computer readable medium of claim 79, wherein: The program code also includes: Code for enabling the controller UE to establish a unicast connection with the non-controller UE.

94. The non-transitory computer readable medium of claim 93, wherein: The program code also includes: Code for causing the controller UE to send, to the non-controller UE, a configuration for a dedicated resource pool for the non-controller UE based on the unicast connection.

95. The non-transitory computer readable medium of claim 94, wherein: The code for causing the controller UE to send the configuration for the dedicated resource pool is further configured to: A sidelink radio resource control (RRC) configuration including the configuration for the dedicated resource pool is sent to the non-controller UE.

96. A non-transitory computer readable medium having program code recorded thereon, the program code comprising: Code for causing a non-controller user equipment (UE) to receive a sidelink system information signal including an indication of a first preconfigured profile of a plurality of preconfigured profiles from a controller UE, wherein the sidelink system information signal includes: a physical sidelink broadcast channel (PSBCH) signal including an index referencing the first preconfigured profile and the indication of the first preconfigured profile, wherein the first preconfigured profile includes a frequency band configuration, and wherein the PSBCH signal is transmitted on a frequency band selected from a set of preconfigured frequency bands based on interference; and Code for causing the non-controller UE to transmit a first sidelink transmission based at least in part on the first preconfigured profile.

97. The non-transitory computer readable medium of claim 96, wherein: The PSBCH signal includes: A region identifier (ID) associated with the first preconfigured profile.

98. The non-transitory computer readable medium of claim 96, wherein: The first pre-configured profile also includes a radio resource configuration.

99. The non-transitory computer readable medium of claim 98, wherein: The first pre-configured profile includes the radio resource configuration indicating at least one of a sidelink transmission resource pool or a sidelink reception resource pool.

100. The non-transitory computer readable medium of claim 99, wherein: The code for causing the non-controller UE to transmit the first sidelink transmission is further configured to: The first sidelink transmission is transmitted using resources in said at least one of the sidelink transmit resource pool or the sidelink receive resource pool.

101. The non-transitory computer readable medium of claim 96, wherein: The program code also includes: Code for causing the non-controller UE to receive a sidelink remaining minimum system information (RMSI) signal including a radio resource management (RRM) configuration from the controller UE.

102. The non-transitory computer readable medium of claim 101, wherein: The RRM configuration covers the zone configuration in the first pre-configuration profile, and the RRM configuration includes at least one of geographic coordinate information, zone length, zone width, or zone to resource pool mapping.

103. The non-transitory computer readable medium of claim 101, wherein: The RRM configuration overrides the congestion control configuration in the first preconfigured profile, and the RRM configuration includes at least one of a channel busy ratio (CBR) or a channel access ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile.

104. The non-transitory computer readable medium of claim 101, wherein: The RRM configuration indicates one or more resource pools different from the preconfigured resource pools indicated by the first preconfiguration profile.

105. The non-transitory computer readable medium of claim 104, wherein: The RRM configuration further indicates a plurality of congestion control parameters for a first resource pool of the one or more resource pools, and wherein each congestion control parameter of the plurality of congestion control parameters is associated with a different quality of service (QoS).

106. The non-transitory computer readable medium of claim 101, wherein: The RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool.

107. The non-transitory computer readable medium of claim 106, wherein: The first sensing rule allows random sub-channel selection in the abnormal transmission resource pool without performing sensing.

108. The non-transitory computer readable medium of claim 106, wherein: The exception transmission resource pool is in an unlicensed spectrum band, and wherein the first sensing rule indicates a Carrier Sense Multiple Access / Collision Avoidance (CSMA / CA) based Listen Before Talk (LBT) for accessing the exception transmission resource pool.

109. The non-transitory computer readable medium of claim 106, wherein: The program code also includes: code for enabling the non-controller UE to establish a unicast connection with the controller UE; and Code for causing the non-controller UE to transmit a second sidelink transmission based on the unicast connection using a first resource in the exception transmit resource pool.

110. The non-transitory computer readable medium of claim 109, wherein: The code for causing the non-controller UE to transmit the second sidelink transmission is further configured to: The second sidelink transmission is transmitted using the first resource in the abnormal transmission resource pool based on at least one of sensing in the normal transmission resource pool, a priority of the second sidelink transmission, or a duration of the second sidelink transmission.

111. The non-transitory computer readable medium of claim 110, wherein: The program code also includes: The code for causing the non-controller UE to receive, from the controller UE, a configuration for a dedicated resource pool for the controller UE; and The code is configured to cause the non-controller UE to transmit a third sidelink transmission using a second resource in the dedicated resource pool based on the sensing.

112. The non-transitory computer readable medium of claim 111, wherein: The code for causing the non-controller UE to receive the configuration for the dedicated resource pool is further configured to: A radio resource control (RRC) configuration including the configuration for the dedicated resource pool is received from the controller UE.

113. The non-transitory computer readable medium of claim 111, wherein: The program code also includes: code for causing the non-controller UE to perform sensing in the dedicated resource pool, The code for causing the non-controller UE to transmit the second sidelink transmission is further configured to: before completing the sensing in the dedicated resource pool, transmitting the second sidelink transmission using the first resource in the exception transmit resource pool, and The code for causing the non-controller UE to transmit the third sidelink transmission is further configured to: The third sidelink transmission is transmitted using the second resource in the dedicated resource pool based on the sensing.

114. The non-transitory computer readable medium of claim 101, wherein: The program code also includes: Code for causing the non-controller UE to transmit a second sidelink transmission based on the RRM configuration.

115. The non-transitory computer readable medium of claim 114, wherein: The program code also includes: The code for causing the non-controller UE to start a timer in response to receiving the sidelink RMSI signal, the code for causing the non-controller UE to transmit the second sidelink transmission is further configured to: Based on the timer being ongoing, transmitting the second sidelink transmission using the RRM configuration, and the code for causing the non-controller UE to transmit the first sidelink transmission is further configured to: Based on expiration of the timer, the first sidelink transmission is transmitted using the first preconfigured profile.

116. The non-transitory computer readable medium of claim 115, wherein: The code for causing the non-controller UE to start the timer is further configured to: The timer is also started based on a determination that the non-controller UE does not have a unicast connection with the controller UE.

117. The non-transitory computer readable medium of claim 96, wherein: The program code also includes: The code is configured to cause the non-controller UE to synchronize to the controller UE based on the sidelink system information signal.

118. A controller user equipment (UE), comprising: means for transmitting a sidelink system information signal comprising an indication of a first preconfigured profile among a plurality of preconfigured profiles, wherein the sidelink system information signal comprises: a physical sidelink broadcast channel (PSBCH) signal comprising an index referencing the first preconfigured profile and the indication of the first preconfigured profile, wherein the first preconfigured profile comprises a frequency band configuration, and wherein the PSBCH signal is transmitted on a frequency band selected from a set of preconfigured frequency bands based on interference; and Means for communicating a first sidelink transmission with a non-controller UE based at least in part on the first preconfigured profile.

119. The controller UE according to claim 118, wherein: The PSBCH signal includes: A region identifier (ID) identifying the first preconfigured profile.

120. The controller UE according to claim 118, wherein: The first pre-configured profile also includes a radio resource configuration.

121. The controller UE according to claim 120, wherein: The first pre-configured profile includes the radio resource configuration indicating at least one of a sidelink transmission resource pool or a sidelink reception resource pool.

122. The controller UE according to claim 121, wherein: The means for transmitting the first sidelink transmission is further configured to: The first sidelink transmission is transmitted using resources in said at least one of the sidelink transmit resource pool or the sidelink receive resource pool.

123. The controller UE according to claim 118, further comprising: Means for transmitting a sidelink Remaining Minimum System Information (RMSI) signal including a Radio Resource Management (RRM) configuration.

124. The controller UE according to claim 123, wherein: The RRM configuration covers the zone configuration in the first pre-configuration profile, and the RRM configuration includes at least one of geographic coordinate information, zone length, zone width, or zone to resource pool mapping.

125. The controller UE according to claim 123, wherein: The RRM configuration overrides the congestion control configuration in the first preconfigured profile, and the RRM configuration includes at least one of a channel busy ratio (CBR) or a channel access ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile.

126. The controller UE according to claim 123, wherein: The RRM configuration indicates one or more resource pools different from the preconfigured resource pools indicated by the first preconfiguration profile.

127. The controller UE according to claim 126, wherein: The RRM configuration further indicates a plurality of congestion control parameters for a first resource pool of the one or more resource pools, and wherein each congestion control parameter of the plurality of congestion control parameters is associated with a different quality of service (QoS).

128. The controller UE according to claim 123, wherein: The RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool.

129. The controller UE according to claim 128, wherein: The first sensing rule allows random sub-channel selection in the abnormal transmission resource pool without performing sensing.

130. The controller UE according to claim 128, wherein: The exception transmission resource pool is in an unlicensed spectrum band, and wherein the first sensing rule indicates a Carrier Sense Multiple Access / Collision Avoidance (CSMA / CA) based Listen Before Talk (LBT) for accessing the exception transmission resource pool.

131. The controller UE according to claim 118, further comprising: Means for sending a synchronization signal to provide a reference synchronization source for one or more UEs including the non-controller UE.

132. The controller UE according to claim 118, further comprising: Unit configured to establish a unicast connection with the non-controller UE.

133. The controller UE according to claim 132, further comprising: Means for sending, to the non-controller UE, a configuration for a dedicated resource pool for the non-controller UE based on the unicast connection.

134. The controller UE according to claim 133, wherein: The unit for sending the configuration for the dedicated resource pool is further configured to: A sidelink radio resource control (RRC) configuration including the configuration for the dedicated resource pool is sent to the non-controller UE.

135. A non-controller user equipment (UE), comprising: means for receiving, from a controller UE, a sidelink system information signal comprising an indication of a first preconfigured profile of a plurality of preconfigured profiles, wherein the sidelink system information signal comprises: a physical sidelink broadcast channel (PSBCH) signal comprising an index referencing the first preconfigured profile and the indication of the first preconfigured profile, wherein the first preconfigured profile comprises a frequency band configuration, and wherein the PSBCH signal is transmitted on a frequency band selected from a set of preconfigured frequency bands based on interference; and Means for transmitting a first sidelink transmission based at least in part on the first preconfigured profile.

136. The non-controller UE of claim 135, wherein: The PSBCH signal includes: A region identifier (ID) associated with the first preconfigured profile.

137. The non-controller UE of claim 135, wherein: The first pre-configured profile also includes a radio resource configuration.

138. The non-controller UE of claim 137, wherein: The first pre-configured profile includes the radio resource configuration indicating at least one of a sidelink transmission resource pool or a sidelink reception resource pool.

139. The non-controller UE of claim 138, wherein: The means for transmitting the first sidelink transmission is further configured to: The first sidelink transmission is transmitted using resources in said at least one of the sidelink transmit resource pool or the sidelink receive resource pool.

140. The non-controller UE of claim 135, further comprising: Means for receiving a sidelink remaining minimum system information (RMSI) signal including a radio resource management (RRM) configuration from the controller UE.

141. The non-controller UE of claim 140, wherein: The RRM configuration covers the zone configuration in the first pre-configuration profile, and the RRM configuration includes at least one of geographic coordinate information, zone length, zone width, or zone to resource pool mapping.

142. The non-controller UE of claim 140, wherein: The RRM configuration overrides the congestion control configuration in the first preconfigured profile, and the RRM configuration includes at least one of a channel busy ratio (CBR) or a channel access ratio (CR) associated with a preconfigured resource pool indicated by the first preconfigured profile.

143. The non-controller UE of claim 140, wherein: The RRM configuration indicates one or more resource pools different from the preconfigured resource pools indicated by the first preconfiguration profile.

144. The non-controller UE of claim 143, wherein: The RRM configuration further indicates a plurality of congestion control parameters for a first resource pool of the one or more resource pools, and wherein each congestion control parameter of the plurality of congestion control parameters is associated with a different quality of service (QoS).

145. The non-controller UE of claim 140, wherein: The RRM configuration indicates an abnormal transmission resource pool associated with a first sensing rule, the first sensing rule being different from a second sensing rule associated with a normal transmission resource pool.

146. The non-controller UE of claim 145, wherein: The first sensing rule allows random sub-channel selection in the abnormal transmission resource pool without performing sensing.

147. The non-controller UE of claim 145, wherein: The exception transmission resource pool is in an unlicensed spectrum band, and wherein the first sensing rule indicates a Carrier Sense Multiple Access / Collision Avoidance (CSMA / CA) based Listen Before Talk (LBT) for accessing the exception transmission resource pool.

148. The non-controller UE of claim 145, further comprising: A unit for establishing a unicast connection with the controller UE; as well as Means for transmitting a second sidelink transmission based on the unicast connection using first resources in the exception transmit resource pool.

149. The non-controller UE of claim 148, wherein: The means for transmitting the second sidelink transmission is further configured to: The second sidelink transmission is transmitted using the first resource in the abnormal transmission resource pool based on at least one of sensing in the normal transmission resource pool, a priority of the second sidelink transmission, or a duration of the second sidelink transmission.

150. The non-controller UE of claim 149, further comprising: means for receiving, from the controller UE, a configuration for a dedicated resource pool for the controller UE; as well as Means for transmitting a third sidelink transmission using a second resource in the dedicated resource pool based on the sensing.

151. The non-controller UE of claim 150, wherein: The unit for receiving the configuration for the dedicated resource pool is further configured to: A radio resource control (RRC) configuration including the configuration for the dedicated resource pool is received from the controller UE.

152. The non-controller UE of claim 150, further comprising: means for performing sensing in said dedicated resource pool, Wherein, the means for transmitting the second sidelink transmission is further configured to: before completing the sensing in the dedicated resource pool, transmitting the second sidelink transmission using the first resource in the exception transmit resource pool, and Wherein, the means for transmitting the third sidelink transmission is further configured to: The third sidelink transmission is transmitted using the second resource in the dedicated resource pool based on the sensing.

153. The non-controller UE of claim 140, further comprising: Means for transmitting a second sidelink transmission based on the RRM configuration.

154. The non-controller UE of claim 153, further comprising: means for starting a timer in response to receiving the sidelink RMSI signal, Wherein, the means for transmitting the second sidelink transmission is further configured to: Based on the timer being ongoing, transmitting the second sidelink transmission using the RRM configuration, and wherein the means for transmitting the first sidelink transmission is further configured to: Based on expiration of the timer, the first sidelink transmission is transmitted using the first preconfigured profile.

155. The non-controller UE of claim 154, wherein: The unit for starting the timer is further configured to: The timer is also started based on a determination that the non-controller UE does not have a unicast connection with the controller UE.

156. The non-controller UE of claim 135, further comprising: means for synchronizing to the controller UE based on the sidelink system information signal.

Images