Waveform design for sidelink in New Radio Unlicensed (NR-U)

Abstract

A wireless communication system and method are provided for sidelink communication in a shared radio frequency band. A first user equipment (UE) receives a configuration for frequency interleaved resources in a shared radio frequency band from a base station (BS) for sidelink communication between the first UE and a second UE. The first UE transmits the sidelink communication with the second UE using the frequency interleaved resources.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of U.S. Patent Application No. 17 / 022,712, filed on September 16, 2020, and U.S. Provisional Patent Application No. 62 / 903,624, filed on September 20, 2019, the entire contents of which are incorporated herein by reference as if fully set forth below and for all applicable purposes. Technical Field

[0003] The present application relates to wireless communication systems, and more particularly, to sidelink communications between user equipment devices (UEs) in a shared radio frequency band. Background Art

[0004] 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 be referred to in other aspects as user equipment (UE)).

[0005] To meet the growing demand for expanded mobile broadband connections, wireless communication technology is evolving from Long Term Evolution (LTE) technology to next-generation New Radio (NR) technology, which may be referred to as the fifth generation (5G). For example, NR is designed to provide lower latency, higher bandwidth or higher throughput, and higher reliability than LTE. NR is designed to operate over a wide range of spectrum bands, for example, from low frequency bands below about 1 GHz and mid-frequency bands from about 1 GHz to about 6 GHz, to high frequency bands (e.g., millimeter wave (mmWave) bands. NR is also designed to operate across different spectrum types, from licensed spectrum to unlicensed 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.

[0006] 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) communications, vehicle-to-everything (V2X) communications, and / or cellular vehicle-to-everything (C-V2X) communications. Similarly, NR can be extended to support sidelink communications, D2D communications, V2X communications, and / or C-V2X on licensed and / or unlicensed bands. Summary of the invention

[0007] Some aspects of the present disclosure are summarized below to provide a basic understanding of the technology discussed. This summary is not an exhaustive review of all contemplated features of the present disclosure, and is neither intended to identify key or important elements of all aspects of the present disclosure, nor 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 a summarized form as a prelude to a more detailed description presented later.

[0008] For example, in one aspect of the present disclosure, a wireless communication method includes: receiving, by a first user equipment (UE) from a base station (BS), a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between the first UE and a second UE; and, by the first user equipment using the frequency interleaved resources to transmit sidelink communication with the second user equipment.

[0009] In an additional aspect of the present disclosure, a method of wireless communication includes: determining, by a base station (BS), a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between a first user equipment (UE) and a second UE; and sending, by the BS, the configuration for sidelink communication to the first UE.

[0010] In an additional aspect of the present disclosure, a first user equipment (UE) includes a transceiver configured to receive a configuration for frequency interleaved resources in a shared radio frequency band from a base station (BS) for sidelink communication between the first UE and a second UE; and to transmit sidelink communication with the second UE using the frequency interleaved resources.

[0011] In an additional aspect of the present disclosure, a base station (BS) includes a processor and a transceiver, wherein the processor is configured to determine a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between a first user equipment (UE) and a second UE; the transceiver is configured to send the configuration for sidelink communication to the first UE.

[0012] When browsing the following description of the 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 of ordinary skill in the art. Although the features of the present invention can be discussed with respect to certain embodiments and figures below, 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 features with certain advantages, 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 the exemplary embodiments may be discussed below as devices, systems or methods, it should be understood that such exemplary embodiments may be implemented in various devices, systems and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A wireless communication network in accordance with some aspects of the present disclosure is shown.

[0014] Figure 2

[0013] A wireless communication network providing sidelink communications in accordance with some aspects of the present disclosure is shown.

[0015] Figure 3 A sidelink communication scheme according to some aspects of the present disclosure is shown.

[0016] Figure 4 is a block diagram of a user equipment (UE) according to some aspects of the present disclosure.

[0017] Figure 5 is a block diagram of an exemplary base station (BS) according to some aspects of the present disclosure.

[0018] Figure 6 A sidelink communication scheme using a frequency interleaved waveform according to some aspects of the present disclosure is shown.

[0019] Figure 7 A sidelink communication scheme using a frequency interleaved waveform according to some aspects of the present disclosure is shown.

[0020] Figure 8 A sidelink communication scheme using a frequency interleaved waveform according to some aspects of the present disclosure is shown.

[0021] Fig.9A A sidelink communication scheme using a frequency interleaved waveform according to some aspects of the present disclosure is shown.

[0022] Fig. 9B A sidelink communication scheme using a frequency interleaved waveform according to some aspects of the present disclosure is shown.

[0023] Fig. 9C A sidelink communication scheme using a frequency interleaved waveform according to some aspects of the present disclosure is shown.

[0024] Fig.10 A sidelink communication scheme using a frequency interleaved waveform according to some aspects of the present disclosure is shown.

[0025] Fig.11 A sidelink communication scheme using a frequency interleaved waveform according to some aspects of the present disclosure is shown.

[0026] Fig.12 is a signaling diagram of a sidelink communication method according to some aspects of the present disclosure.

[0027] Fig.13 is a flow chart of a communication method according to some aspects of the present disclosure.

[0028] Fig.14 is a flow chart of a communication method according to some aspects of the present disclosure. DETAILED DESCRIPTION

[0029] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations that can implement the concepts described herein. The detailed description includes specific details for providing a thorough understanding of the various concepts. However, it is apparent to those skilled in the art that these concepts can be implemented without these specific details. In some instances, well-known structures and components are shown in the form of block diagrams to avoid blurring such concepts.

[0030] In general, the present disclosure relates to wireless communication systems, also referred to as wireless communication networks. In various embodiments, these techniques and devices can be used for wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE networks, global mobile communication systems (GSM) networks, fifth generation (5G) or new radio (NR) networks, and other communication networks. As described herein, the terms "network" and "system" can be used interchangeably.

[0031] 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 parts 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 telecommunications association groups that aims to define globally applicable third generation (3G) mobile phone specifications. 3GPP Long Term Evolution (LTE) is a 3GPP project aimed at 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 technologies from LTE, 4G, 5G, NR, and beyond that use new and different radio access technologies or sets of radio air interfaces to share access to wireless spectrum between networks.

[0032] In particular, 5G networks envision different deployments, different spectrums, and different services and devices that can be implemented using a unified air interface based on OFDM. To achieve these goals, in addition to developing new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also considered. 5G NR will be able to extend to provide coverage from (1) to (2) with ultra-high density (e.g., ~1M nodes / km) to (3) with ultra-high density (e.g., ~1M nodes / km). 2 ), ultra-low complexity (e.g., ~ tens of bits / second), ultra-low energy consumption (e.g., ~ 10 years of battery life), and deep coverage capable of reaching challenging locations; (2) including mission-critical control for users with strong security to protect sensitive personal, financial, or confidential information, ultra-high reliability (e.g., ~ 99.9999% reliability), ultra-low latency (e.g., ~ 1 ms), and a wide range of mobility or lack of mobility; and (3) with enhanced mobile broadband, including extremely high capacity (e.g., ~ 10 Tbps / km 2 ), extremely high data rates (e.g., multi-Gbps rates, 100+Mbps user experienced rates), and deep perception with advanced discovery and optimization.

[0033] 5G NR can be implemented using an optimized OFDM-based waveform with a scalable digital scheme and transmission time interval (TTI); with a common, flexible framework to effectively multiplex services and features with a dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) design; and using advanced wireless technologies such as massive multiple-input multiple-output (MIMO), robust millimeter wave (mmWave) transmission, advanced channel coding, and device-centric mobility. The scalability of the digital scheme in 5G NR and the scaling of the subcarrier spacing can effectively address the operation of various services across different spectrums and different deployments. For example, in various outdoor and macro coverage deployments less than 3GHz FDD / TDD implementations, the subcarrier spacing may appear at 15kHz, for example, on bandwidths (BW) of 5, 10, 20MHz, etc. For other various outdoor and small cell coverage deployments of TDD greater than 3GHz, the subcarrier spacing may 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 a millimeter wave component at 28 GHz TDD, subcarrier spacing may occur at 120 kHz over 500 MHz BW.

[0034] 5G NR's scalable digital scheme facilitates scalable TTI for different 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 at symbol boundaries. 5G NR also envisions a self-contained integrated subframe design where UL / downlink schedules information, data, and acknowledgments in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, 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.

[0035] The various other aspects and features of the present disclosure are further described below. It should be apparent that the teachings of this article can be embodied in a variety of forms, and any specific structure, function, or both disclosed herein are merely representative and non-restrictive. Based on the teachings of this article, it should be understood by those of ordinary skill 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 implemented. In addition, using other structures, functions, or structures and functions other than one or more of the aspects set forth herein or structures and functions different from one or more of the aspects set forth herein, such a device can be implemented or such a method can be implemented. For example, a method can be implemented as a part of a system, device, device, and / or implemented as an instruction stored on a computer-readable medium for execution on a processor or computer. In addition, an aspect may include at least one element of a claim.

[0036] The present application describes a mechanism for sidelink communication using a frequency interleaved waveform in a shared radio frequency band. The shared radio frequency band may be part of a shared spectrum or an unlicensed spectrum. For example, a BS may configure a frequency interleaved resource pool for a first UE for sidelink communication between the first UE and a second UE. The frequency interleaved resource pool may include a plurality of frequency domain physical resource blocks (PRB) interleaved in the shared radio frequency band. Each frequency domain PRB interleave may include a set of PRBs evenly spaced in the shared radio frequency band. The sidelink communication may include a physical sidelink shared channel (PSSCH) and a physical sidelink control channel (PSCCH). The PSSCH may carry data, and the PSCCH may carry control information, the control information including transmission parameters for sending data in the PSSCH. The BS may configure the first UE to multiplex the PSSCH and the PSCCH on the same frequency interleave using frequency division multiplexing (FDM) or time division multiplexing (TDM). When FDM is adopted, the BS may configure the highest frequency PRB and the lowest frequency PRB in the frequency interleave for PSCCH communication to provide frequency diversity.

[0037] In some aspects, the first UE may allocate additional frequency domain resources and / or time domain resources for transmitting PSSCH data. In this regard, the first UE may allocate one or more additional frequency interleavings for PSSCH data communication. Alternatively or additionally, the first UE may apply time slot aggregation to allocate one or more additional time slots for PSSCH data communication. In some aspects, the first UE may select additional resources from a frequency interleaving resource pool. In some aspects, the first UE may indicate additional PSSCH resources in the PSCCH control information.

[0038] Various aspects of the present disclosure may provide several benefits. For example, using frequency interleaved waveforms for sidelink transmissions may allow the sidelink transmissions to meet a specific bandwidth occupancy requirement of a shared radio frequency band (e.g., a BW occupancy requirement of approximately 80%). Additionally, the use of frequency interleaved waveforms may allow the sidelink transmissions to be sent with increased power while meeting a specific maximum allowed power spectral density (PSD) of the shared radio frequency band. Additionally, using unlicensed spectrum for sidelink communications may offload traffic from licensed spectrum.

[0039] Figure 1 A wireless communication network 100 according to some aspects of the present disclosure is shown. 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 specific geographic area. In 3GPP, the term "cell" may refer to the specific 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.

[0040] 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 may also provide restricted access by UEs associated with a femto cell (e.g., UEs in a closed subscriber group (CSG) , UEs of users in a home, etc.). The BS of a macro cell may be referred to as a macro BS. The BS of a small cell may be referred to as a small cell BS, a pico BS, a femto BS, or a home BS. In Figure 1In the example shown in , BS105d and 105e may be conventional macro BSs, while BS105a-105c may be macro BSs enabled with one of three-dimensional (3D), full-dimensional (FD), or massive MIMO. BS105a-105c may utilize its higher-dimensional MIMO capabilities to employ 3D beamforming in 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.

[0041] The network 100 may support synchronous 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.

[0042] UE 115 is scattered throughout the wireless network 100, and each UE 115 can be fixed 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 can be a device that does not include UICC. In some aspects, UE 115 that does not include UICC can also be referred to as IoT device or Internet of Everything (IoE) device. UE 115a-115d is an example of a mobile smart phone type device that accesses the network 100. UE 115 can also be a machine that is specially configured for connection communication, and these connection communications include machine type communication (MTC), enhanced MTC (eMTC), narrowband IoT (NB-IoT), etc. UE 115e-115h are examples of various machines configured for communication to access network 100. UE 115i-115k are examples of vehicles equipped with wireless communication devices configured for communication to access network 100. UE 115 may be able to communicate with any type of BS, whether a macro BS, a small cell, or something similar. Figure 1 , the lightning ball (e.g., communication link) indicates wireless transmission between UE 115 and serving BS 105 (which is a BS designated to serve UE 115 on a downlink (DL) and / or uplink (UL)), desired transmission between BS 105, backhaul transmission between BSs, or sidelink transmission between UE 115.

[0043] In operation, BS 105a-105c may use 3D beamforming and cooperative spatial techniques such as coordinated multi-point (CoMP) or multi-connectivity to serve UEs 115a and 115b. Macro BS 105d may perform backhaul communications with BS 105a-105c and small cell BS 105f. Macro BS 105d may also transmit multicast services subscribed 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, such as weather emergencies or alerts, such as Amber Alerts or Gray Alerts.

[0044] The BS 105 may also communicate with a core network. The core network may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. At least some of the BSs 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.

[0045] The network 100 may also support mission critical communications with ultra-reliable and redundant links for mission critical devices such as 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 such as small cell BS 105f and macro BS 105e through the network 100, or 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 smart meter UE 115g, which then reports the temperature measurement information to the network through small cell BS 105f. The network 100 may also provide additional network efficiency through dynamic, low-latency TDD / FDD communications, for example, vehicle-to-vehicle (V2V) communications between UEs 115i-115k, vehicle-to-everything (V2X) communications between UE 115i, UE 115j, or UE 115k and other UEs 115, and / or vehicle-to-infrastructure (V2I) communications between UE 115i, UE 115j, or UE 115k and BS105.

[0046] In some embodiments, 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.

[0047] 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, while 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 multiple (e.g., approximately 10) subframes or time slots. 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 occur at different time periods using the same frequency band. 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 a radio frame (e.g., UL subframes) may be used for UL transmissions.

[0048] 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. Reference signals are predetermined signals that facilitate communication between BS105 and UE 115. For example, reference signals may have a specific pilot pattern or structure, wherein pilot tones may span the BW or frequency band of operation, 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 UE115 to estimate the DL channel. Similarly, UE 115 may send a sounding reference signal (SRS) to enable BS105 to estimate the UL channel. Control information may include resource assignment and protocol control. Data may include protocol data and / or operational data. In some aspects, BS105 and UE115 may communicate using self-contained subframes. Self-contained subframes 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 DL ​​communications.

[0049] In some aspects, network 100 may be an NR network deployed on a licensed spectrum. BS 105 may send synchronization signals (e.g., including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS)) in network 100 to facilitate synchronization. BS 105 may broadcast system information associated with network 100 (e.g., including a master information block (MIB), remaining system information (RMSI), and other system information (OSI)) to facilitate initial network access. In some instances, BS 105 may broadcast PSS, SSS, and / or MIB in the form of a synchronization signal block (SSB) on a physical broadcast channel (PBCH), and may broadcast RMSI and / or OSI on a physical downlink shared channel (PDSCH).

[0050] In some aspects, a UE 115 attempting to access the network 100 may perform an initial cell search by detecting a PSS from the BS 105. The PSS may enable synchronization of periodic 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 a physical layer identification value to identify a cell. The PSS and SSS may be located in the center portion of a carrier or in any suitable frequency within a carrier.

[0051] 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 a random access channel (RACH) procedure, paging, a control resource set (CORESET) for physical downlink control channel (PDCCH) monitoring, a physical UL control channel (PUCCH), a physical UL shared channel (PUSCH), power control, and SRS.

[0052] 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 permission, a 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 a contention resolution method. In some examples, the random access preamble, the RAR, the connection request, and the connection response may be referred to as message 1 (MSG 1), message 2 (MSG 2), message 3 (MSG 3), and message 4 (MSG 4), 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.

[0053] After establishing the connection, UE 115 and BS 105 may enter a normal operating state in which operating 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.

[0054] In some aspects, BS105 may communicate with UE 115 using HARQ technology to improve communication reliability, for example, to provide URLLC services. BS105 may schedule UE 115 to perform PDSCH communication by sending a DL grant in PDCCH. BS105 may send DL data packets to UE 115 according to the scheduling in PDSCH. DL data packets may be sent in the form of transport blocks (TBs). If UE 115 successfully receives the DL data packet, UE 115 may send HARQ ACK to BS105. On the contrary, if UE 115 fails to successfully receive the DL transmission, UE 115 may send HARQ NACK to BS105. Upon receiving HARQ NACK from UE 115, BS105 may retransmit the DL data packet to UE 115. The retransmission may include the DL data of the same coded version as the initial transmission. Alternatively, the retransmission may include the DL data of the coded version different from the 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.

[0055] 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 allocate the UE 115 to operate on a certain BWP (e.g., a certain part of the system BW). The allocated BWP may be referred to as an active BWP. The UE 115 may monitor the active BWP to obtain signaling information from the BS 105. The BS 105 may schedule the UE 115 to perform UL communication or DL ​​communication in the active BWP. In some aspects, the BS 105 may allocate a pair of BWPs within the CC to the UE 115 for UL communication and DL communication. For example, the BWP pair may include a BWP for UL communication and a BWP for DL ​​communication.

[0056] In some aspects, the network 100 may operate on a shared channel, which may include a shared frequency band or an unlicensed frequency band. For example, the network 100 may be an NR unlicensed (NR-U) network operating on an unlicensed frequency band. In such aspects, the BS 105 and the UE 115 may be operated by multiple network operation entities. In order to avoid conflicts, the BS 105 and the UE 115 may use a listen-before-talk (LBT) process to monitor the transmission opportunities (TXOPs) in the shared channel. For example, a transmitting node (e.g., a BS 105 or a 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. In one example, LBT may be based on energy detection. For example, when the signal energy measured from the channel is lower than a threshold, the LBT result passes. On the contrary, when the signal energy measured from the channel exceeds a threshold, the LBT result fails. In another example, LBT may be based on signal detection. For example, when a channel reservation signal (eg, a predetermined preamble signal) is not detected in the channel, the LBT result is passed.

[0057] In some aspects, the network 100 may provide sidelink communications to allow a UE 115 to communicate with another UE 115 without tunneling through the BS 105 and / or core network. The BS 105 may configure certain resources in a licensed band and / or an unlicensed band for sidelink communications between a UE 115 and other UEs 115. Certain frequency bands may have certain BW occupancy requirements and / or maximum allowed power spectral density (PSD). In order to meet BW occupancy requirements and / or increase transmit power under certain PSD limits, sidelink transmissions in the network 100 may use frequency interleaved waveforms. The mechanisms for sidelink communications using frequency interleaving are described in more detail herein.

[0058] Figure 2 An example of a wireless communication network 200 provided for sidelink communications according to an embodiment of the present disclosure is shown. The network 200 may be similar to the network 100. To simplify the discussion, Figure 2 One BS 205 and four UEs 215 are shown, although it should be appreciated that embodiments of the present disclosure may be extended to any suitable number (e.g., approximately 2, 3, 6, 7, 8, or more) of UEs 215 and / or BSs 205. BSs 205 and UEs 215 may be similar to BSs 105 and UEs 115, respectively. BSs 205 and UEs 215 may communicate on the same frequency spectrum.

[0059] In network 200, some UE 215 can communicate with each other in peer-to-peer communication. For example, UE 215a can communicate with UE 215b through sidelink 251, and UE 215c can communicate with UE 215d through another sidelink 252. Sidelinks 251 and 252 are unicast bidirectional links. Some UE 215 can also communicate with BS 205 in UL direction and / or DL ​​direction via communication link 253. For example, UE 215a, 215b and 215c are in the coverage area 210 of BS 205, and therefore can communicate with BS 205. UE 215d is outside the coverage area 210, and therefore can not communicate directly with BS 205. In some cases, UE 215c can operate as a relay for UE 215d to BS 205. In some aspects, some UEs 215 are associated with vehicles (e.g., similar to UEs 115i-k), and communications over sidelinks 251 and / or 252 may be C-V2X communications. C-V2X communications may refer to communications between a vehicle and any other wireless communication device in a cellular network.

[0060] In some aspects, network 200 may be an LTE network. Transmissions by UE 215a and UE 215b on sidelink 251 and / or transmissions by UE 215c and UE 215d on sidelink 252 may reuse an LTE PUSCH waveform, which is a discrete Fourier transform-spread (DFT-s) based waveform. In some aspects, network 200 may be an NR network. Transmissions by UE 215 on sidelink 251 and / or 252 may use a cyclic prefix OFDM (CP-OFDM) waveform.

[0061] Figure 3 A sidelink communication scheme 300 according to some aspects of the present disclosure is shown. The scheme 300 may be employed by a BS such as BSs 105 and 205 and a UE such as UEs 115 and 215 in a network such as network 100. In some instances, the network may be a NR network. Figure 3In the scheme 300, the x-axis represents time in some arbitrary units, and the y-axis represents frequency in some arbitrary units. In scheme 300, a BS (e.g., BS105 and / or 205) can configure a UE (e.g., UE 115 and / or 215) with resources 306 in a frequency band 302 during a time period 304 for sidelink communication with another UE. Sidelink communication may include PSSCH communication 310 and PSCCH communication 320. PSSCH communication 310 may include data. PSCCH communication 320 may include control information associated with the transmission of PSSCH communication 310. PSCCH communication 320 may be substantially similar to PDCCH communication between a BS and a UE. Although a CORESET may not be defined for PSCCH communication 320 as in PDCCH communication, a UE may be required to perform monitoring and blind decoding to receive PSCCH communication 320. Resource 306 may be in the form of a resource block. As shown, PSCCH communication 320 is embedded in PSSCH communication 310. In some examples, PSCCH communications 320 and PSSCH communications 310 may be transmitted using a CP-OFDM waveform.

[0062] Scheme 300 may be appropriate when the sidelink communication is on a licensed band.For sidelink communications on a shared radio frequency band or an unlicensed band, the sidelink communication may be required to meet certain power spectral density (PSD) requirements and / or occupied channel bandwidth (OCB) requirements.

[0063]

[0013] Thus, the present disclosure provides techniques for sidelink communications over unlicensed bands using frequency interleaved waveforms to meet OCB requirements and allow for higher total transmit power without exceeding certain PSD limits.

[0064] Figure 4 4 is a block diagram of an exemplary UE 400 according to some aspects of the present disclosure. UE 400 may be the above Figure 1 1. As shown, UE 400 may include a processor 402, a memory 404, a sidelink communication module 408, a transceiver 410 including a modem subsystem 412 and a radio frequency (RF) unit 414, and one or more antennas 416. These elements may communicate with each other directly or indirectly, for example, via one or more buses.

[0065] The processor 402 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 402 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.

[0066] Memory 404 may include cache memory (e.g., cache memory of processor 402), 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, solid-state memory devices, hard drives, other forms of volatile and non-volatile memory, or a combination of different types of memory. In one aspect, memory 404 includes a non-transitory computer-readable medium. Memory 404 may store or have recorded thereon instructions 406. Instructions 406 may include instructions that, when executed by processor 402, cause processor 402 to perform operations in conjunction with aspects of the present disclosure (e.g., Figures 6 to 13 Instructions 406 may also be referred to as program code. The program code may be used to cause the wireless communication device to perform the operations, for example, by causing one or more processors (such as processor 402) 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 a plurality of computer-readable statements.

[0067] The sidelink communication module 408 may be implemented via hardware, software, or a combination thereof. For example, the sidelink communication module 408 may be implemented as a processor, circuit, and / or instructions 406 stored in the memory 404 and executed by the processor 402. In some examples, the sidelink communication module 408 may be integrated within the modem subsystem 412. For example, the sidelink communication module 408 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 412.

[0068] The sidelink communication module 408 may be used in various aspects of the present disclosure, for example, Figures 6 to 13Aspects of the invention. The sidelink communication module 408 is configured to receive a frequency interleaving configuration from a BS (e.g., BS105 and / or 205) for sidelink communication, and based on the frequency interleaving configuration, transmit sidelink data (e.g., PSSCH data) and / or sidelink control information (e.g., PSSCH control information) with another UE. The frequency interleaving configuration may indicate a pool of frequency domain PRB interleavings in a frequency band. The frequency interleaving configuration may further indicate a multiplexing configuration for multiplexing PSSCH and PSCCH communications on the same frequency interleaving. The multiplexing configuration may indicate FDM or TDM for multiplexing. When FDM is used, the multiplexing configuration may further indicate the highest frequency PRB and the lowest frequency PRB for PSSCH communication. In some aspects, the sidelink communication module 408 is configured to use FDM based on the configuration or to use TDM based on the configuration to multiplex PSSCH and PSCCH on the same frequency interleaving. In some aspects, the sidelink communication module 408 is configured to determine additional frequency domain resources and / or time domain resources for PSSCH communication, and indicates resource allocation information associated with additional frequency domain resources and / or time domain resources in PSCCH via sidelink control information (SCI) signaling. In some aspects, the sidelink communication module can select additional frequency domain resources and / or time domain resources from a pool of frequency domain PRB interleaved as indicated by the configuration. The mechanism for using interleaved waveforms for sidelink communication is described in more detail herein.

[0069] As shown, the transceiver 410 may include a modem subsystem 412 and an RF unit 414. The transceiver 410 may be configured to communicate bidirectionally with other devices, such as the BS 105. The modem subsystem 412 may be configured to modulate and / or encode data from the memory 404 and / or the sidelink communication module 408 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 414 may be configured to process (e.g., perform analog-to-digital conversion or digital-to-analog conversion, etc.) modulated / encoded data (e.g., PSSCH data and / or PSCCH control information) from the modem subsystem 412 (on outbound transmission) or modulated / encoded data originating from another source, such as the UE 115 or the BS 105. The RF unit 414 may also be configured to perform analog beamforming in conjunction with digital beamforming. Although shown as being integrated together in the transceiver 410, the modem subsystem 412 and the RF unit 414 may be separate devices that are coupled together at the UE 115 to enable the UE 115 to communicate with other devices.

[0070] RF unit 414 can provide modulated and / or processed data, such as data packets (or more generally, data messages that can contain one or more data packets and other information) to antenna 416 for transmission to one or more other devices. Antenna 416 can also receive data messages sent from other devices. Antenna 416 can provide received data messages for processing and / or demodulation at transceiver 410. Transceiver 410 can provide demodulated and decoded data (e.g., frequency interleaving configuration, PSSCH data, and / or PSCCH control information) to sidelink communication module 408 for processing. Antenna 416 can include multiple antennas with similar or different designs to maintain multiple transmission links. RF unit 414 can configure antenna 416.

[0071] In one example, the transceiver 410 is configured to: receive a frequency interleaving configuration from a BS (e.g., BS105 and 205), for example by coordinating with the sidelink communication module 408, the frequency interleaving configuration indicating frequency interleaving resources used for sidelink communication, send PSSCH data, PSCCH control information and / or feedback (e.g., HARQ ACK / NACK and / or channel measurement report) to another UE, and / or receive PSSCH data, PSCCH control information and / or feedback from another UE.

[0072] In one aspect, the UE 400 may include multiple transceivers 410 that implement different RATs (e.g., NR and LTE). In one aspect, the UE 400 may include a single transceiver 410 that implements multiple RATs (e.g., NR and LTE). In one aspect, the transceiver 410 may include various components, where different combinations of the multiple components may implement different RATs.

[0073] Figure 5 is a block diagram of an exemplary BS 500 according to some aspects of the present disclosure. BS 500 may be as described above in Figure 1 1. As shown, BS 500 may include a processor 502, a memory 504, a sidelink communication module 508, a transceiver 510 including a modem subsystem 512 and an RF unit 514, and one or more antennas 516. These elements may communicate with each other directly or indirectly, for example, via one or more buses.

[0074] The processor 502 may have various characteristics as a particular 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 502 may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in combination with a DSP core, or any other such configuration.

[0075] The memory 504 may include cache memory (e.g., cache memory of the processor 502), 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 504 may include non-transitory computer-readable media. The memory 504 may store instructions 506. The instructions 506 may include instructions that, when executed by the processor 502, cause the processor 502 to perform the operations described herein (e.g., Figures 6 to 12 and Fig.14 Instructions 506 may also be referred to as code, which may be broadly interpreted as including the above-mentioned instructions. Figure 4 Any type of computer-readable statement discussed.

[0076] The sidelink communication module 508 may be implemented via hardware, software, or a combination thereof. For example, the sidelink communication module 508 may be implemented as a processor, circuit, and / or instructions 506 stored in the memory 504 and executed by the processor 502. In some examples, the sidelink communication module 508 may be integrated within the modem subsystem 512. For example, the sidelink communication module 508 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 512.

[0077] The sidelink communication module 508 may be used in various aspects of the present disclosure, for example, Figure 6-12 and Fig.14Aspects of the invention. The sidelink communication module 508 is configured to send a frequency interleaving configuration to a UE (e.g., UE 115, 215, and / or 400) for sidelink communication (e.g., PSSCH data and / or PSCCH) control information with another UE. The frequency interleaving configuration may indicate a pool of frequency domain PRB interleavings in a frequency band. The frequency interleaving configuration may further indicate a multiplexing configuration for multiplexing PSSCH and PSCCH communications on the same frequency interleaving. The multiplexing configuration may indicate FDM or TDM for multiplexing. When FDM is used, the multiplexing configuration may further indicate the highest frequency PRB and the lowest frequency PRB for PSSCH communication. Mechanisms for providing sidelink communications with interleaved waveforms are described in more detail herein.

[0078] As shown, the transceiver 510 may include a modem subsystem 512 and an RF unit 514. The transceiver 510 may be configured to communicate bidirectionally with other devices (such as UE 115 and / or UE 400 and / or another core network element). The modem subsystem 512 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 514 may be configured to process (e.g., perform analog-to-digital conversion or digital-to-analog conversion, etc.) modulated / encoded data (e.g., grants, resource allocations) from the modem subsystem 512 (on outbound transmissions) or modulated / encoded data transmitted from another source (such as UE 115 and / or UE 400). The RF unit 514 may also be configured to perform analog beamforming in conjunction with digital beamforming. Although shown as being integrated together in transceiver 510, modem subsystem 512 and / or RF unit 514 may be separate devices that are coupled together at BS 105 to enable BS 105 to communicate with other devices.

[0079] The RF unit 514 can provide modulated and / or processed data, such as data packets (or more generally, data messages that can contain one or more data packets and other information) to the antenna 516 for transmission to one or more other devices. This can include, for example, the transmission of information according to some aspects of the present disclosure to complete the attachment to the network and the communication with the resident UE 115 or 400. The antenna 516 can also receive data messages sent from other devices and provide the received data messages for processing and / or demodulation at the transceiver 510. The transceiver 510 can provide the demodulated and decoded data (e.g., UCI, DMRS) to the sidelink communication module 508 for processing. The antenna 516 may include multiple antennas with similar or different designs to maintain multiple transmission links.

[0080] In one example, the transceiver 510 is configured to send a resource configuration indicating frequency interleaving to a UE (e.g., UE 115 and 400) and receive a UL control channel signal (e.g., a PUCCH signal) modulated by HARQ ACK / NACK and SR from the UE in the frequency interleaving, for example by coordinating with the sidelink communication module 508.

[0081] In one aspect, the BS 500 may include multiple transceivers 510 that implement different RATs (e.g., NR and LTE). In one aspect, the BS 500 may include a single transceiver 510 that implements multiple RATs (e.g., NR and LTE). In one aspect, the transceiver 510 may include various components, where different combinations of the multiple components may implement different RATs.

[0082] Figure 6 A sidelink communication scheme 600 using frequency interleaved waveforms according to some aspects of the present disclosure is shown. Scheme 600 may be used by a BS such as BSs 105 and 500 and a UE such as UEs 115 and 400 to communicate on a frequency band 602, which may be a shared radio frequency band or an unlicensed band. Figure 6 , the x-axis represents time in arbitrary units and the y-axis represents frequency in arbitrary units. For example, frequency band 602 may have a bandwidth of about 10 megahertz (MHz) or about 20 MHz and a subcarrier spacing (SCS) of about 15 kilohertz (kHz), about 30 kHz, or about 20 kHz. Frequency band 602 may be located at any suitable frequency. In some aspects, frequency band 602 may be located at about 3.5 GHz, 6 GHz, or 60 GHz. Scheme 600 allocates resources for sidelink communications (e.g., on sidelinks 251 and 252) between UEs (e.g., UE 115 and UE 400) in units of frequency interleaving 608.

[0083] Frequency interleaving is shown as 608 I(0) To 608 (M-1) , where M is a positive integer. Each frequency is interleaved 608 I(i) It may include K RBs 610 evenly spaced across the frequency band 602, where K is a positive integer and i may vary between 0 and M-1. In other words, at a particular frequency interlace 608 I(i) The RBs 610 in the example are separated from each other by at least one other RB 610. The frequency interleaving 608 is shown I(0) Including from cluster 604 C(0) To 604 C(K-1)RB 610. As described in more detail herein, the values ​​of K and M may vary based on several factors, such as bandwidth, SCS, and / or PSD limits of frequency band 602. In one example, a BS (e.g., BS 105) may assign frequency interlace 608 I(0) For sidelink communication between a pair of UEs (eg, UE 115), and frequency interlace 608 may be allocated I(1) For sidelink communication between another pair of UEs. Frequency interleaving 608 I(0) The allocation of is shown as a mode box. In some other examples, the BS may allocate multiple frequency interlaces 608 (e.g., frequency interlaces 608 I(0) and 608 I(1) ) for sidelink communication between a pair of UEs.

[0084] A group of M centralized RBs 610 form a cluster 604. As shown, the frequency interleaving 608 I(0) To 608 (M-1) Form K clusters 604 C(0) To 604 C(K-1) Each RB 610 may span approximately 12 consecutive subcarriers 612 in frequency and a time period 614. The subcarriers 612 are indexed from 0 to 11. The subcarriers 612 are also referred to as resource elements (REs). The time period 614 may span any suitable number of OFDM symbols 606. In some aspects, the time period 614 may correspond to one transmission time interval (TTI), which may include approximately 14 OFDM symbols 606.

[0085] The number of clusters 604 or the value of K may depend on the amount of frequency distribution required to maintain a certain BW occupancy. As an example, the scheme 600 may divide the frequency band 602 into about 10 clusters 604 (e.g., K=10) and distribute the allocations across the 10 clusters 604 to increase the frequency occupancy of the allocations. In one aspect, the frequency band 602 may have a bandwidth of about 20 MHz and each subcarrier 612 may span a frequency of about 15 kHz. In such an aspect, the frequency band 602 may include about 10 frequency interlaces 608 (e.g., M=10). For example, the allocation may include a frequency interlace 608 with 10 distributed or equally spaced RBs 610. An interlaced allocation with 10 distributed RBs 610 allows the UE to transmit with a higher BW occupancy compared to an allocation with a single RB or 10 centralized RBs.

[0086] In another aspect, the frequency band 602 may have a bandwidth of about 10 MHz and each subcarrier 612 may span a frequency of about 15 kHz. In such an aspect, the frequency band 602 may include about 5 frequency interlaces 608 (e.g., M=5). Similarly, an allocation may include one frequency interlace 608 with 10 distributed RBs 610. An interlace allocation with 10 distributed RBs may allow for wider BW occupancy compared to an allocation with a single RB or 10 localized RBs.

[0087] In another aspect, the frequency band 602 may have a bandwidth of about 20 MHz and each subcarrier 612 may span a frequency of about 30 kHz. In such an aspect, the frequency band 602 may include about 5 frequency interlaces 608 (e.g., M=5). Similarly, an allocation may include one frequency interlace 608 with 10 distributed RBs 610. An interlace allocation with 10 distributed RBs may allow for wider BW occupancy compared to an allocation with a single RB or 10 localized RBs.

[0088] In some aspects, RBs 610 are physical resource blocks (PRBs) and each frequency interlace 608 may include PRBs that are evenly spaced in frequency band 602 .

[0089] In the scheme 600, the frequency interlace 608 (e.g., the frequency interlace 608) is assigned. I(0) ) may include PSSCH communications (e.g., PSSCH communications 310) and PSCCH communications (e.g., PSCCH communications 320). Therefore, in scheme 600, the sidelink transmission may have a frequency interleaved waveform. Since frequency band 602 is a shared RF band or an unlicensed band, the UE needs to perform LBT before transmitting in the allocated frequency interleave 608. When LBT is passed, the UE may continue to use the allocated frequency interleave 608 to send PSSCH data and / or PSCCH control information to another UE. The PSSCH control information may be sent in the form of an SCI, which may be substantially similar to a PDCCH DCI sent by the BS to the UE. When LBT fails, the UE may avoid transmitting in the allocated frequency interleave. In order to reduce LBT delay, scheme 600 may configure the UE to multiplex PSSCH and PSCCH in the same frequency interleave 608.

[0090] Figure 7 to Figure 8 The method for interleaving at the same frequency (eg, frequency interleaving 608) is shown. I(0) ) on a PSSCH signal (e.g., PSSCH communication 310) and a PSCCH signal (e.g., PSCCH communication 320). Figure 7 and Figure 8In the scheme 700 and the scheme 800 can be used by a BS such as BS 105, 205 and / or 500 and a UE such as UE 115, 215 and / or 400 in a network such as network 100 and / or 200. Specifically, the BS can configure the frequency interleaving for sidelink communication and the multiplexing configuration for multiplexing PSSCH communication (e.g., PSSCH communication 310) and PSCCH communication (e.g., PSCCH communication 320) for the UE. In addition, for simplicity, Figure 7 to Figure 8 A frequency interleaved resource structure similar to that in scheme 600 is used for description, and the same frequency interleaved resource structure as in scheme 600 can be used. Figure 6 The same reference numerals are used in the drawings.

[0091] Figure 7 A sidelink communication scheme 700 using frequency interleaved waveforms according to some aspects of the present disclosure is shown. The scheme 700 uses FDM to interleave 608 at the same frequency I(0) PSSCH communication 710 and PSCCH communication 720 are multiplexed on the same. PSSCH communication 710 is similar to PSSCH communication 310. PSCCH communication 720 is similar to PSCCH communication 320. To simplify the discussion, Figure 7 An example of a 10 MHz BW (eg, frequency band 602) with a 15 kHz SCS and 10 clusters 604 (eg, K=10) is shown. Thus, frequency interleaving 608 I(0) Ten RBs (e.g., RB 610) may be included. However, scheme 700 may be applied to frequency interleavings with any suitable number of RBs 610 and / or any SCS. Frequency interleaving 608 I(0) The RBs in are shown as RB(0) to RB(9).

[0092] In scheme 700, a BS (e.g., BS 105, 205, and / or 500) may configure a first UE (e.g., UE 115, 215, and / or 400) with frequency interlace 608 in frequency band 602 for sidelink communication with a second UE (e.g., UE 115, 215, and / or 400) via a sidelink (e.g., sidelink 251 and / or 252). Figure 7 In the example shown, the BS configures frequency interleaving 608 for the first UE. I(0) For sidelink communication with the second UE. The BS may configure the first UE with an FDM configuration for frequency interleaving 608. I(0) The PSSCH communication 710 and the PSCCH communication 720 are multiplexed.

[0093] To provide maximum frequency diversity for PSCCH communication 720, the BS may configure PSCCH communication 720 to be in frequency interleaving 608. I(0) In other words, the BS can configure the highest frequency RB (e.g., RB(0)) and the lowest frequency RB (e.g., RB(9)) for PSCCH communication 720. PSSCH communication 710 can use frequency interleaving 608 I(0) The remaining RBs in (e.g., RB(1) to RB(8)).

[0094] The PSSCH communication 710 may include data and the PSCCH communication 720 may include control information associated with the transmission of the data.

[0095] In some aspects, the transmission of PSSCH communications 710 and PSCCH communications 720 may use frequency interleaving 608. I(0) In this regard, the first UE and / or the second UE may map the encoded PSSCH control information and the encoded PSSCH data to the frequency interleaved 608. I(0) The CP-OFDM transmission signal is generated by performing an inverse fast Fourier transform (IFFT) on the subcarriers (eg, subcarrier 612) of the corresponding RB.

[0096] Figure 8 A sidelink communication scheme 800 using frequency interleaved waveforms according to some aspects of the present disclosure is shown. The scheme 800 uses TDM to interleave 608 at the same frequency I(0) PSSCH communication 810 and PSCCH communication 820 are multiplexed on the 4G Fiber optic cable. PSSCH communication 810 is similar to PSSCH communications 310 and 710. PSCCH communication 820 is similar to PSCCH communications 320 and 720.

[0097] In the scheme 800, a BS (eg, BS 105, 205, and / or 500) configures frequency interleaving 608 to a first UE (eg, UE 115, 215, and / or 400). I(0) , for sidelink communication with a second UE (e.g., UE 115, 215, and / or 400) via a sidelink (e.g., sidelink 251 and / or 252). The BS may configure a TDM configuration to the first UE for use in frequency interleaving 608. I(0)The PSSCH communication 810 and the PSCCH communication 820 are multiplexed on the BS. The BS may configure a time period 802 for the PSCCH communication 820 and another time period 804 configured for the PSSCH communication 810. The time period 804 may be adjacent to the time period 802 to reduce the LBT delay (e.g., a single LBT may be performed before the time period 802 for the transmission of the PSCCH communication 820 and the PSSCH communication 810). In some instances, the time period 804 for the PSSCH communication 810 may include a greater number of symbols (e.g., symbol 606) than the time period 802 for the PSCCH communication 820. In some instances, the time period 802 may include approximately 1-2 OFDM symbols and the time period 804 may include 10-11 symbols. In some instances, the length of the time period 802 for the PSCCH communication 820 may be predetermined. The first UE may transmit SCI to the second UE in the PSCCH communication 820 during the time period 802, and the second UE may perform blind decoding in the time period 802 to receive the SCI.

[0098] Although the PSSCH communication 810 and the PSCCH communication 820 are communicated during different time periods, each of the PSSCH communication 810, PSCCH communication 820 may include an interleaved waveform. In some aspects, the transmission of the PSSCH communication 810 and the PSCCH communication 820 may use the frequency interleaving 608. I(0) In this regard, the first UE and / or the second UE may map the DFT output to the frequency interleaved 608 by performing DFT on the encoded PSSCH control information. I(0) 608. Similarly, the first UE and / or the second UE may perform DFT on the coded PSSCH data and map the DFT output to the frequency interleaved 608. I(0) 800, and performs IFFT on the subcarriers of the RBs in the scheme 800 to generate a DFT-s-OFDM transmission signal for transmission during the time period 804. The DFT-s-OFDM-based waveform transmission in the scheme 800 may provide a lower peak-to-average power ratio (PAPR) than the CP-OFDM-based waveform transmission in the scheme 700.

[0099] In some aspects, one frequency interlace 608 may not be sufficient to carry PSSCH data for sidelink communications. Figures 9A-9C and Fig.10Various mechanisms are shown for allocating additional frequency resources (e.g., frequency interlace 608) and / or additional time resources (e.g., multiple time slots and / or mini-time slots) for sidelink communications (e.g., PSSCH communications 310, 710, and / or 810 and PSCCH communications 320, 720, and / or 820). Fig.10 In the schemes 900 and 1000, a BS such as BS 105, 205 and / or 500 and a UE such as UE 115, 215 and / or 400 in a network such as network 100 and / or 200 may be employed. In particular, the BS may configure a plurality of frequency interlaces on one or more transmission slots and / or one or more mini-slots to the UE for sidelink communication. In addition, for simplicity, Figures 9A-9C and Fig.10 A frequency interleaved resource structure similar to that in scheme 600 is used for description, and the same frequency interleaved resource structure as in scheme 600 can be used. Figure 6 The same reference numerals are used in the drawings.

[0100] Figure 9A-9C A sidelink communication scheme 900 using frequency interleaved waveforms according to some aspects of the present disclosure is shown together. Scheme 900 is substantially similar to scheme 700, wherein PSSCH communications 910 and PSCCH communications 920 are frequency multiplexed to the same frequency interlace 608. I(0) PSSCH communication 910 is similar to PSSCH communication 310, 710, and / or 810. PSCCH communication 920 is similar to PSCCH communication 320, 720, and / or 820. However, scheme 900 may allocate one or more additional frequency interlaces for PSSCH communication 910. To simplify the discussion, Fig.9A An additional frequency interlace 608 is shown allocated for PSSCH communication 910 I(1) , however, it should be appreciated that the scheme 900 may be applied to allocate any suitable number (e.g., approximately 2, 3, 4, or more) of additional frequency interlaces 608 for PSSCH communications 910.

[0101] In some aspects, a BS (eg, BS 105, 205, and / or 500) may configure a frequency interlace 608 to a first UE (eg, UE 115, 215, and / or 400). I(0) For transmitting PSSCH communication 910 and PSCCH communication 920 with the second UE. Similar to scheme 700, the BS may configure frequency interleaving 608. I(0) The highest frequency RB (0) and the lowest frequency RB (9) are used for PSCCH communication 920 and the frequency interleaving 608 is configured I(0)The first UE may allocate additional frequency interlaces 608 to the PSSCH communication 910, for example, based on the transmission data size. The first UE may indicate the allocation of the additional frequency interlaces 608 in the PSCCH communication 920. For example, in the example shown in FIG. 9 , the first UE allocates additional frequency interlaces 608 to the PSSCH communication 910. I(1) Although the example of FIG. 9 shows the frequency interleaving 608 I(0) The first UE may allocate any other frequency interlace in the frequency band 602 for PSSCH communication 910. For example, when the frequency band 602 includes M number of interlaces 608, I(0) To 608 I(M-1) When the first UE can allocate frequency interlace 608 I(m) As additional frequency domain resources for PSSCH communication 910, where m can be between 1 and M-1.

[0102] In some aspects, the first UE may include an SCI 922 in the transmission of the PSCCH communication 920 to indicate to the second UE that the PSSCH communication 910 is also transmitting in the additional frequency interlace 608. I(1) The first UE may send SCI 922 in the highest frequency RB(0) and may transmit SCI 922 in the frequency interleaving 608. I(0) The transmission of SCI 922 is repeated in the lowest frequency RB (9) of 608. I(1) In addition to RB(1) to RB(8) of the second UE, the second UE can also decode SCI 922 from PSCCH communication 920 and receive SCI 922 from frequency interleaving 608. I(1) Receive PSSCH communication 910. SCI 922 may use a bitmap (e.g., Fig. 9B 924) or a resource indication value (RIV) (e.g., Fig. 9C The RIV 925 shown in FIG. 9 is used to indicate resource allocation (RA) information regarding the additional frequency interlace 608 allocated for PSSCH communication 910.

[0103] Fig. 9B An example of how the SCI 922 indicates the allocation of an additional frequency interlace 608 for PSSCH communication 910 is shown. Fig. 9B In the example shown, SCI 922 includes a bitmap 924 containing a plurality of bits. To simplify illustration and discussion, Fig. 9B The first cluster 604 is shown C(0) , while the remaining cluster 604 is not shown C(1) To 604 C(9)The length of the bitmap 924 may vary depending on the number of frequency interlaces 608 in the frequency band 602. Each bit in the bitmap may identify one of the frequency interlaces 608 in the frequency band 602. For example, the frequency band 602 may include five frequency interlaces 608, each of which may be I(0) 、608 I(1) 、608 I(2) 、608 I(3) and 608 I(4) 924 may utilize four bits represented by [b0, b1, b2, b3] to indicate additional frequency interlaces 608 that may be allocated for PSSCH communication 910, as shown by the dashed box. Each bit in bitmap 924 may be set to a value of 1 to indicate that the corresponding frequency interlace 608 is allocated for PSSCH communication 910. For example, bit b0 may be set to a value of 1 to indicate that frequency interlace 608 I(1) is allocated for PSSCH communication 910, bit b1 may be set to a value of 1 to indicate frequency interleaving 608 I(2) 910, and so on. Conversely, a bit in the bitmap 924 may be set to a value of 0 to indicate that the corresponding frequency interlace 608 is not allocated for PSSCH communication 910. In some other examples, a bit value of 0 in the bitmap 924 may indicate that the corresponding frequency interlace 608 is allocated for PSSCH communication 910, and a bit value of 0 in the bitmap 924 may indicate that the corresponding frequency interlace 608 is not allocated for PSSCH communication 910.

[0104] Fig. 9C Another example of how the SCI 922 indicates the allocation of an additional frequency interlace 608 for PSSCH communication 910 is shown. Fig. 9C In the example shown, the SCI 922 may include a RIV 925 including a first parameter 926 indicating the starting frequency interlace 608 and a second parameter 928 indicating the number of frequency interlaces starting from the starting frequency interlace 608 and that may be further used to transmit the PSSCH communication 910. To simplify illustration and discussion, Fig. 9C shows the frequency interleaving 608 I(1) Thus, the first parameter 926 may include an identifier for the starting frequency interlace 608. I(1) The value 1 of the second parameter 928 may include an indication of two additional frequency interleavings 608 (eg, frequency interleavings 608 I(1) and 608 I(2) ) is assigned the value 2 for PSSCH communication 910.

[0105] In some aspects, the sidelink communication may be performed in a wideband (e.g., having a BW of approximately 100 MHz). The wideband may be divided into multiple subbands similar to the frequency band 602, for example, having a 20 MHz BW. To facilitate the sidelink communication, the PSCCH communication 920 may be communicated in a frequency interlace 608 within a certain subband in the frequency band 602, and the first UE may be allocated an additional frequency interlace 608 in a different subband. The first UE may also indicate in the SCI 922 which subband of the multiple subbands the additional frequency interlace 608 is located.

[0106] Fig.10 A sidelink communication scheme 1000 using a frequency interleaved waveform according to some aspects of the present disclosure is shown. Scheme 1000 is substantially similar to scheme 900, where PSSCH communications 1010 and PSCCH communications 1020 are frequency multiplexed to the same frequency interlace 608. I(0) and allocates additional frequency interlace 608 for PSCCH communication 1020 I(1) The PSSCH communication 1010 is similar to the PSSCH communication 310, 710, 810, and / or 910. The PSCCH communication 1020 is similar to the PSCCH communication 320, 720, 820, and / or 920. However, the scheme 1000 may also allocate additional time resources (e.g., aggregation of time slots) for the PSSCH communication 910. To simplify the discussion, Fig.10 One additional time slot 1004 is shown allocated for PSSCH communications 1010 , but it will be appreciated that the scheme 1000 may be applied to allocate any suitable number of time slots (eg, approximately 2, 3, 4, or more) for PSSCH communications 1010 .

[0107] In some aspects, a BS (eg, BS 105, 205, and / or 500) may configure a first UE (eg, UE 115, 215, and / or 400) with frequency interlace 608 in time slot 1002. I(0) , for transmitting PSSCH communication 1010 and PSCCH communication 1020 with the second UE. Similar to schemes 700 and 900, the BS may configure frequency interleaving 608 I(0) The highest frequency RB (0) and the lowest frequency RB (9) are used for PSCCH communication 1020, and the frequency interleaving 608 is configured. I(0) The remaining RBs in the time slot 1002 may be used for PSSCH communication 1010. Similar to scheme 900, the first UE may allocate additional frequency interlaces (eg, frequency interlace 608) for PSSCH communication 1010 in time slot 1002. I(1)). The first UE may also allocate additional time slots 1004 for PSSCH communication 1010. The first UE may indicate additional frequency interleaving 608 in PSCCH communication 1020. I(1) and allocation of additional time slots 1004. Time slots 1002 and time slots 1004 may include any suitable number of durations or OFDM symbols (eg, approximately 2, 3, 4, 5, 6, 7, or more symbols 606).

[0108] In some aspects, similar to scheme 900, the first UE can include SCI 1022 in the transmission of PSCCH communication 1020 to indicate to the second UE that it is further necessary to select the SCI 1022 during the time slot 1002 in the frequency interlace 608. I(1) and during time slot 1004 at frequency interleaving 608 I(0) and frequency interleaving 608 I(1) The first UE may send SCI 1022 in the highest frequency RB(0) and may transmit PSCCH communication 1020 in frequency interlace 608. The indication of the additional time slot 1004 is shown by the dashed arrow. I(0) The transmission of SCI 1022 is repeated in the lowest frequency RB (9) of time slot 1002. Therefore, in addition to the frequency interleaving 608 during time slot 1002 I(1) RB(1) to RB(8) and from frequency interleaving 608 during time slot 1004 I(0) and 608 I(1) In addition, the second UE may also decode the SCI 1022 from the PSCCH communication 1020 and the frequency interleaving 608. I(1) Receive PSSCH communication 1010. SCI 1022 may use similar mechanisms (e.g., bitmap 924 and / or RIV 925) to indicate RA information regarding additional frequency interlaces 308 allocated for PSSCH communication 1010 as discussed in scheme 900 discussed above with reference to FIG9. SCI 1022 may also include a time length parameter in SCI 1022 indicating additional time slots 1004 allocated for PSSCH communication 1010.

[0109] Fig.11 A sidelink communication scheme 1100 using frequency interleaved waveforms according to some aspects of the present disclosure is shown. The scheme 1100 can be employed by a BS such as BS 105, 205, and / or 500 and a UE such as UE 115, 215, and / or 400 in a network such as network 100 and / or 200. In particular, the BS can configure frequency interleaving to the UE for feedback communication via a sidelink (e.g., sidelinks 251 and 252). The scheme 1100 can be used in conjunction with the above-mentioned respective references. Figure 6 , 7, 8, 9A-9C and / or 10 described in combination with the schemes 600, 700, 800, 900 and / or 1000. Fig.11 In this case, the x-axis can represent time in some arbitrary units, and the y-axis can represent frequency in some arbitrary units. For simplicity, Fig.11 is described using a frequency interleaved resource structure similar to that in scheme 600 and may be used with Figure 6 The same reference numerals are used in the drawings.

[0110] In some aspects, a BS (eg, BS 105, 205, and / or 500) may configure a frequency interlace 608 to a first UE (eg, UE 115, 215, and / or 400). I(0) , for physical sidelink feedback (PSFCH) communication 1110 with the second UE. In some aspects, the PSFCH communication 1110 can span about one OFDM symbol (e.g., symbol 606). In some other aspects, the PSFCH communication 1110 can span more than one OFDM symbol.

[0111] In some aspects, the PSFCH communication 1110 may carry HARQ ACK / NACK feedback. As described above, HARQ techniques may be applied to improve communication reliability. In this regard, the first UE and the second UE may use HARQ to transmit PSSCH data (e.g., PSSCH communications 710, 810, 910, and / or 1010) and use the assigned frequency interlace 608. I(0) To transmit HARQ ACK / NACK feedback. For example, the first UE may send PSSCH data to the second UE via a side link. The PSSCH data packet may be sent in the form of TBs. If the second UE successfully receives the PSSCH data, the second UE may use frequency interleaving 608. I(0) Send HARQ ACK to the first UE (in PSFCH communication 1110). In contrast, if the second UE fails to successfully receive the PSSCH data, the second UE 1 may use frequency interleaving 608 I(0) A HARQ NACK is sent to the first UE (in PSFCH communication 1110). Upon receiving the HARQ NACK from the second UE, the first UE may retransmit the PSSCH data. Similarly, the second UE may send PSSCH data to the first UE using a similar HARQ mechanism. In some aspects, the HARQ ACK / NACK transmission may use one waveform sequence to indicate an ACK and another waveform sequence to indicate a NACK.

[0112] In some aspects, the PSFCH communication 1100 may carry a channel state information (CSI) measurement report. In this regard, the first UE may send a reference signal (e.g., a CSI reference signal) to the second UE via a sidelink, and the second UE may provide a CSI report to the first UE based on a measurement of the reference signal. Similarly, the second UE may send a CSI reference signal to the first UE via a sidelink, and the first UE may provide a CSI report to the second UE based on a measurement of the CSI reference signal.

[0113] Fig.12 1 is a signaling diagram of a sidelink communication method 1200 according to some aspects of the present disclosure. The method 1200 may be implemented between a BS (e.g., BS 105, 205, and / or 500) and two UEs (e.g., UE 115, 215, and / or 400) shown as UE A and UE B. The method 1200 may be implemented as described above with reference to Figure 6 , 7 , 8, 9A-9C, 10 and / or 11 described in the scheme 600, 700, 800, 900, 1000 and / or 1100. As shown, the method 1200 includes a plurality of enumerated steps, but embodiments of the method 1200 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.

[0114] At step 1210, the BS sends a frequency interleaving configuration for sidelink communications between UE A and UE B. Sidelink communications may include PSSCH communications (e.g., PSSCH communications 710, 810, 910, and / or 1010), PSCCH communications (e.g., PSCCH communications 720, 820, 920, and / or 1020), and / or PSFCH communications (e.g., PSFCH communications 1110). The configuration may indicate a pool of frequency interleaving resources (e.g., frequency interleaving 608) in a frequency band (e.g., frequency band 602). The configuration may also indicate a multiplexing configuration for multiplexing PSSCH and PSCCH communications on the same frequency interleaving. The multiplexing configuration may indicate FDM as shown in scheme 700 or TDM as shown in scheme 800. The configuration may also indicate a waveform type for PSSCH and PSCCH communications. When the multiplexing is FDM, the waveform type may be a CP-OFDM waveform. When the multiplexing is TDM, the waveform type can be a CP-OFDM waveform or a DFT-s-OFDM waveform. The configuration can also indicate a specific frequency interlace for multiplexing PSSCH and PSCCH communications. The configuration can also indicate that UE A and / or UE B can select additional frequency interlace resources from the resource pool for sidelink communications.

[0115] At step 1220, upon receiving the frequency interleaving configuration, UE A determines a first frequency interleaving (eg, frequency interleaving 608) for sidelink communication based on the configuration. I(0) ). In some aspects, the first frequency interlace may correspond to a frequency interlace configured by the BS for multiplexing PSSCH and PSCCH communications.

[0116] At step 1230, UE A may transmit PSSCH data and / or PSCCH control information using the first frequency interlace. UE A may perform LBT in the frequency band before sending the PSSCH data and / or PSCCH control information. UE A may multiplex the PSSCH data and / or PSCCH control information according to the multiplexing configuration on the first frequency interlace. UE A may allocate additional frequency domain resources (e.g., one or more frequency interlaces 608) and / or time domain resources for transmitting PSSCH data using the mechanisms described in the above schemes 900 and / or 1000. In some aspects, UE A may select additional frequency domain resources and / or time domain resources from a resource pool.

[0117] Fig.13 1300 according to some aspects of the present disclosure. The steps of method 1300 may be performed by a computing device (e.g., a processor, processing circuitry, and / or other suitable components) of a wireless communication device or other suitable means for performing the steps. For example, a wireless communication device such as UE 115, 215, or UE 400 may utilize one or more components, such as processor 402, memory 404, sidelink communication module 408, transceiver 410, modem 412, and one or more antennas 416, to perform the steps of method 1300. Method 1300 may be implemented as described above with reference to Figure 6 , 7 , 8, 9A-9C, 10 and / or 11 described in the embodiments 600, 700, 800, 900, 1000 and / or 1100, and / or the above referenced Fig.12 The method 1300 described above may be a similar mechanism as in the method 1200 described above. As shown, the method 1300 includes a plurality of enumerated steps, but aspects of the method 1300 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.

[0118] At step 1310, method 1300 includes: receiving, by the first UE from a BS (e.g., BS 105, 205, and / or 500), a configuration for frequency interleaved resources (e.g., frequency interleaved 608) in a shared radio frequency band for sidelink communication between the first UE and the second UE. In some instances, the first UE may correspond to UE 400, and may utilize one or more components such as sidelink communication module 408, transceiver 410, modem 412, and one or more antennas 416 to receive a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between the first UE and the second UE.

[0119] At step 1320, method 1300 includes: transmitting, by the first UE, sidelink communications with the second UE using the frequency interleaved resources. In some examples, the first UE may correspond to UE 400 and may utilize one or more components such as sidelink communications module 408, transceiver 410, modem 412, and one or more antennas 416 to transmit sidelink communications with the second UE using the frequency interleaved resources.

[0120] In some aspects, step 1320 includes: based on the configuration, the first UE transmits sidelink communications with the second UE by frequency multiplexing PSCCH signals (e.g., PSCCH communications 720, 820, 920 and / or 1020) and PSSCH signals (e.g., PSSCH communications 710, 810, 910 and / or 1010) on frequency interleaved resources.

[0121] In some aspects, the frequency interleaved resources include: a first frequency interlace of RBs (e.g., RB610) that are evenly spaced in a shared radio frequency band. Step 1320 includes: transmitting, by the first UE, a PSCCH signal with the second UE in at least one of the highest frequency RB or the lowest frequency RB in the first frequency interlace based on the configuration. Step 1320 also includes: transmitting, by the first UE, a PSSCH signal with the second UE in all remaining RBs in the first frequency interlace based on the configuration. In some aspects, step 1320 includes: transmitting, by the first UE, a PSSCH signal with the second UE in at least a second frequency interlace of PRBs that are evenly spaced in the shared radio frequency band. In some aspects, step 1320 includes: transmitting, by the first UE, a PSCCH signal with the second UE that includes an SCI (e.g., SCI922), the SCI indicating an allocation of a second frequency interlace for transmitting the PSSCH signal. In some aspects, the SCI includes a bitmap (e.g., bitmap 924) containing a plurality of bits, each of which identifies a frequency interlace in the shared radio frequency band, and wherein a first of the plurality of bits identifies a second frequency interlace. In some aspects, the SCI includes a RIV (e.g., RIV 925) indicating a starting frequency interleave and a number of one or more frequency interleaves for transmitting a PSSCH signal, wherein the starting frequency interleave corresponds to a starting frequency interleave. In some aspects, the shared radio frequency band includes a plurality of subbands. Step 1320 includes: transmitting, by the first UE and the second UE, a PSCCH signal including an SCI, the SCI indicating which subbands of the plurality of subbands the second frequency interleave is located in. In some aspects, the first UE also selects a second frequency interleave from the frequency interleave resources for transmitting the PSSCH signal. In some cases, the first UE may correspond to UE 400, and information associated with the frequency interleave resources may be stored in memory 404, and a second frequency interleave for transmitting the PSSCH signal may be selected based on the information of the frequency interleave resources stored in memory 404 using one or more components such as a sidelink communication module 408 and a processor 410.

[0122] In some aspects, step 1320 includes: based on the configuration, transmitting, by the first UE, a PSSCH signal and a PSCCH signal in a first frequency interlace with a second UE in a first time period (e.g., time slot 1002), the PSSCH signal including an SCI including an indication of a second time period (e.g., time slot 1004) for transmitting the PSSCH signal. Step 1320 also includes: based on the SCI, transmitting, by the first UE, a PSSCH signal in the first frequency interlace with the second UE also during the second time period. In some aspects, the first UE also selects a first frequency interlace from the frequency interlace resources for transmitting the PSSCH signal in the second time period. In some instances, the first UE may correspond to UE 400, and information associated with the frequency interlace resources may be stored in memory 404, and a second frequency interlace for transmitting the PSSCH signal may be selected based on the information of the frequency interlace resources stored in memory 404 using one or more components such as a sidelink communication module 408 and a processor 410.

[0123] In some aspects, step 1320 includes transmitting, by the first UE, a sidelink communication with the second UE by time division multiplexing a PSCCH signal and a PSSCH signal on frequency interlaced resources based on the configuration.

[0124] In some aspects, step 1320 is performed based on successful LBT in the shared radio frequency band.

[0125] Fig.14 1400 is a flow chart of a communication method 1400 according to some aspects of the present disclosure. The steps of method 1400 may be performed by a computing device (e.g., a processor, processing circuitry, and / or other suitable components) of a wireless communication device or other suitable means for performing the steps. For example, a wireless communication device such as BS105, BS205, or BS 500 may utilize one or more components, such as a processor 502, a memory 504, a sidelink communication module 508, a transceiver 510, a modem 512, and one or more antennas 516 to perform the steps of method 1400. Method 1400 may be implemented in the same manner as described above with reference to Figure 6 , 7 , 8, 9A-C, 10 and / or 11 described in the embodiments 600, 700, 800, 900, 1000 and / or 1100 and / or the above referenced Fig.12 The method 1400 described above may be similar to the mechanism described in the method 1200. As shown, the method 1400 includes a plurality of enumerated steps, but aspects of the method 1400 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.

[0126] At step 1410, method 1400 includes determining, by the BS, a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between a first UE (e.g., UE 115, 215, and / or 400) and a second UE (e.g., UE 115, 215, and / or 400). In some instances, the BS may correspond to BS 500, and may utilize one or more components such as sidelink communication module 408 and processor 410 to determine a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between the first UE and the second UE.

[0127] At step 1420, method 1400 includes: sending, by the BS, a configuration for sidelink communication to the first UE. In some instances, the BS may correspond to BS 500, and may utilize one or more components such as sidelink communication module 508, transceiver 510, modem 512, and one or more antennas 516 to send the configuration for sidelink communication to the first UE.

[0128] In some aspects, step 1410 includes: determining, by the BS, a frequency interleave (e.g., frequency interleave 608) of RBs (e.g., RB 610) that are evenly spaced in a shared radio frequency band. In some aspects, the configuration includes: a multiplexing configuration for frequency multiplexing PSCCH communications (e.g., PSCCH communications 720, 820, 920, and / or 1020) and PSSCH communications (e.g., PSSCH communications 710, 810, 910, and / or 1010) on the frequency interleave. In some aspects, the configuration indicates: the highest frequency RB and the lowest frequency RB used for PSCCH communications in the frequency interleave of the RBs. In some aspects, the configuration includes: a multiplexing configuration for time multiplexing PSCCH communications and PSSCH communications on the frequency interleave.

[0129] A further embodiment of the present disclosure includes a wireless communication method. The wireless communication method includes: receiving, by a first user equipment (UE) from a base station (BS), a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between the first UE and a second UE. The wireless communication method also includes: transmitting the sidelink communication using the frequency interleaved resources by the first UE and the second UE.

[0130] The method may also include one or more of the following features. For example, the method includes: wherein the transmitting includes: based on the configuration, the first UE transmits the sidelink communication with the second UE by frequency multiplexing a physical sidelink control channel (PSCCH) signal and a physical sidelink shared channel (PSSCH) signal on the frequency interleaved resource. The frequency interleaved resource includes: a first frequency interleaving of resource blocks (RBs) evenly spaced in a shared radio frequency band, and wherein the transmitting includes: based on the configuration, the first UE transmits the PSCCH signal with the second UE in at least one of the highest frequency RB or the lowest frequency RB in the first frequency interleaving; and, based on the configuration, the first user equipment transmits the PSSCH signal with the second user equipment in all remaining RBs in the first frequency interleaving. The transmitting includes: the first UE further transmits the PSSCH signal with the second UE in at least a second frequency interleaving of RBs evenly spaced in the shared radio frequency band. The transmitting includes: the first UE transmits the PSCCH signal with the second UE, the PSCCH signal including sidelink control information (SCI) indicating the allocation of the second frequency interleaving for transmitting the PSSCH signal. The SCI includes a bitmap including a plurality of bits, each of the plurality of bits identifying a frequency interlace in a shared radio frequency band, and wherein a first bit of the plurality of bits identifies a second frequency interlace. The SCI indicates a starting frequency interlace and a number of one or more frequency interlaces for transmitting a PSSCH signal, and wherein the starting frequency interlace corresponds to the starting frequency interlace. The shared radio frequency band includes a plurality of subbands, and wherein the transmitting includes: transmitting a PSCCH signal by a first UE with a second UE, the PSCCH signal including sidelink control information (SCI) indicating which subbands of the plurality of subbands the second frequency interlace is located in. The method may include: selecting, by the first UE, a second frequency interlace for transmitting a PSSCH signal from a frequency interlace resource. The transmitting includes: based on a configuration, transmitting, by the first UE, a PSSCH signal and a PSCCH signal with the second UE in a first frequency interlace during a first time period, the PSCCH signal including sidelink control information (SCI), the SCI including an indication of a second time period for transmitting the PSSCH signal; and, based on the SCI, further transmitting, by the first UE, a PSSCH signal with the second UE in the first frequency interlace during a second time period. The method may include: selecting, by the first UE, a first frequency interlace for transmitting a PSSCH signal from the frequency interlace resources in a second time period. The transmitting includes: based on the configuration, by the first UE transmitting a sidelink communication with the second UE by time multiplexing a physical sidelink control channel (PSCCH) signal and a physical sidelink shared channel (PSSCH) signal on the frequency interlace resources. The transmitting is further based on listen-before-talk (LBT) in a shared radio frequency band.

[0131] A further embodiment of the present disclosure includes a method of wireless communication. The method of wireless communication includes: determining, by a base station (BS), a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between a first user equipment (UE) and a second UE. The method of wireless communication also includes: sending, by the BS, a configuration for sidelink communication to the first UE.

[0132] The method may also include one or more of the following features. For example, the method includes: wherein the determination includes: determining, by the BS, a frequency interleaving of resource blocks (RBs) that are evenly spaced in a shared radio frequency band. The configuration includes: a multiplexing configuration for frequency multiplexing physical sidelink control channel (PSCCH) communications and physical sidelink shared channel (PSSCH) communications on a frequency interleaving. The configuration indicates the highest frequency RB and the lowest frequency RB used for PSCCH communications in the frequency interleaving of RBs. The configuration includes: a multiplexing configuration for time multiplexing physical sidelink control channel (PSCCH) communications and physical sidelink shared channel (PSSCH) communications on a frequency interleaving.

[0133] A further embodiment of the present disclosure includes a first user equipment (UE) comprising a transceiver configured to receive a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communications between the first UE and a second UE from a base station (BS). The transceiver is further configured to transmit the sidelink communications with the second UE using the frequency interleaved resources.

[0134] The first UE may also include one or more of the following features. For example, the first UE includes: wherein the transceiver configured to transmit sidelink communication is also configured to transmit sidelink communication with the second UE based on the configuration by frequency multiplexing the physical sidelink control channel (PSCCH) signal and the physical sidelink shared channel (PSSCH) signal on the frequency interleaved resources. The frequency interleaved resources include a first frequency interleaving of resource blocks (RBs) evenly spaced in a shared radio frequency band, and wherein the transceiver configured to transmit sidelink communication is further configured to: based on the configuration, transmit the PSCCH signal to the second UE in at least one of the highest frequency RB or the lowest frequency RB in the first frequency interleaving; and, according to the configuration, transmit the PSSCH signal to the second UE in all remaining RBs in the first frequency interleaving. The transceiver configured to transmit sidelink communication is also configured to further transmit the PSSCH signal to the second UE in at least a second frequency interleaving of RBs evenly spaced in the shared radio frequency band. The transceiver configured to transmit sidelink communication is also configured to transmit a PSCCH signal with a second UE, the PSCCH signal including sidelink control information (SCI) indicating the allocation of a second frequency interleave for transmitting a PSSCH signal. The SCI includes a bitmap containing a plurality of bits, each of the plurality of bits identifying a frequency interleave in a shared radio frequency band, and wherein the first of the plurality of bits identifies the second frequency interleave. The SCI indicates a starting frequency interleave and the number of one or more frequency interleaves for transmitting the PSSCH signal, and wherein the starting frequency interleave corresponds to the starting frequency interleave. The shared radio frequency band includes a plurality of subbands, and wherein the transceiver configured to transmit sidelink communication is also configured to transmit a PSCCH signal with a second UE, the PSCCH signal including sidelink control information (SCI) indicating which subbands of the plurality of subbands the second frequency interleave is located in. The first UE may include a processor configured to select a second frequency interleave for transmitting the PSSCH signal from the frequency interleave resource. The transceiver configured to transmit sidelink communications is further configured to: transmit a PSSCH signal and a PSCCH signal with a second UE in a first frequency interlace during a first time period based on the configuration, the PSCCH signal including sidelink control information (SCI), the SCI including an indication of a second time period for transmitting the PSSCH signal; and, based on the SCI, further transmit the PSSCH signal with the second UE in the first frequency interlace during a second time period. The first UE may include a processor configured to select a first frequency interlace from the frequency interlace resources for transmitting the PSSCH signal in the second time period.The transceiver configured to transmit the sidelink communication is further configured to transmit the sidelink communication with the second UE by time division multiplexing a physical sidelink control channel (PSCCH) signal and a physical sidelink shared channel (PSSCH) signal on frequency interleaved resources based on the configuration. The transceiver configured to transmit the sidelink communication is further configured to transmit the sidelink communication based on listen before talk (LBT) in a shared radio frequency band.

[0135] A further embodiment of the present disclosure includes a base station (BS). The base station also includes a processor configured to determine a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between a first user equipment (UE) and a second UE. The base station also includes a transceiver configured to send a configuration for sidelink communication to the first UE.

[0136] The BS may also include one or more of the following features. For example, the BS includes: wherein the processor configured to determine the configuration is also configured to determine the frequency interleaving of resource blocks (RBs) uniformly spaced in the shared radio frequency band. The configuration includes: a multiplexing configuration for frequency multiplexing physical sidelink control channel (PSCCH) communications and physical sidelink shared channel (PSSCH) communications on frequency interleaving. The configuration indicates the highest frequency RB and the lowest frequency RB used for PSCCH communications in the frequency interleaving of RBs. The configuration includes: a multiplexing configuration for time multiplexing physical sidelink control channel (PSCCH) communications and physical sidelink shared channel (PSSCH) communications on frequency interleaving.

[0137] A further embodiment of the present disclosure includes a non-transitory computer-readable medium having program code recorded thereon. For example, the non-transitory computer-readable medium includes code for causing a first user equipment (UE) to perform the following operations: receiving a configuration for frequency interleaved resources in a shared radio frequency band from a base station (BS) for sidelink communication between the first UE and a second UE. The non-transitory computer-readable medium also includes code for causing the first UE to transmit sidelink communication with the second UE using the frequency interleaved resources.

[0138] The non-transitory computer-readable medium may also include one or more of the following features. For example, the non-transitory computer-readable medium includes a code for causing the first UE to transmit a sidelink communication, wherein the code is further configured to: based on the configuration, transmit the sidelink communication with the second UE by frequency multiplexing the physical sidelink control channel (PSCCH) signal and the physical sidelink shared channel (PSSCH) signal on the frequency interleaved resource. The frequency interleaved resource includes: a first frequency interleaving of resource blocks (RBs) evenly spaced in a shared radio frequency band, and wherein the code for causing the first UE to transmit the sidelink communication is further configured to: based on the configuration, transmit the PSCCH signal with the second UE in at least one of the highest frequency RB or the lowest frequency RB in the first frequency interleaving; and, based on the configuration, transmit the PSSCH signal with the second UE in all remaining RBs in the first frequency interleaving. The code for causing the first UE to transmit the sidelink communication is further configured to: further transmit the PSSCH signal with the second UE in at least a second frequency interleaving of RBs evenly spaced in the shared radio frequency band. The code for causing the first UE to transmit a sidelink communication is further configured to transmit a PSCCH signal with a second UE, the PSCCH signal including sidelink control information (SCI), the SCI indicating the allocation of a second frequency interlace for transmitting the PSSCH signal. The SCI includes a bitmap including a plurality of bits, each of the plurality of bits identifying a frequency interlace in a shared radio frequency band, and wherein the first of the plurality of bits identifies a second frequency interlace. The SCI indicates a starting frequency interlace and the number of one or more frequency interlaces for transmitting the PSSCH signal, and wherein the starting frequency interlace corresponds to the starting frequency interlace. The shared radio frequency band includes a plurality of subbands, and wherein the code for causing the first UE to transmit a sidelink communication is further configured to transmit a PSCCH signal with a second UE, the PSCCH signal including sidelink control information (SCI), the SCI indicating which subbands of the plurality of subbands the second frequency interlace is located in. The non-transitory computer-readable medium may include code for causing the first UE to select a second frequency interlace for transmitting the PSSCH signal from a frequency interlace resource. The code for causing the first UE to transmit a sidelink communication is further configured to: based on the configuration, transmit a PSSCH signal and a PSCCH signal with the second UE in the first frequency interlace during the first time period, the PSCCH signal including sidelink control information (SCI), the SCI including an indication of a second time period for transmitting the PSSCH signal; and, based on the SCI, further transmit the PSSCH signal with the second UE in the first frequency interlace during the second time period. The non-transitory computer-readable medium may include code for causing the first UE to select a first frequency interlace for transmitting the PSSCH signal from the frequency interlace resources in the second time period.The code for causing the first UE to transmit a sidelink communication is further configured to: based on the configuration, transmit the sidelink communication with the second UE by time division multiplexing a physical sidelink control channel (PSCCH) signal and a physical sidelink shared channel (PSSCH) signal on frequency interlaced resources. The code for causing the first UE to transmit the sidelink communication is further configured to: transmit the sidelink communication based on listen before talk (LBT) in a shared radio frequency band.

[0139] A further embodiment of the present disclosure includes a non-transitory computer-readable medium having program code recorded thereon. For example, the non-transitory computer-readable medium includes code for causing a base station (BS) to determine a configuration of frequency interleaved resources in a shared radio frequency band for sidelink communication between a first user equipment (UE) and a second user equipment (UE). The non-transitory computer-readable medium also includes code for causing the BS to send a configuration for sidelink communication to the first UE.

[0140] The non-transitory computer-readable medium may also include one or more of the following features. For example, the non-transitory computer-readable medium includes a code for causing the BS to determine a configuration that is further configured to: determine the frequency interleaving of resource blocks (RBs) that are evenly spaced in a shared radio frequency band. The configuration includes: a multiplexing configuration for frequency multiplexing physical sidelink control channel (PSCCH) communications and physical sidelink shared channel (PSSCH) communications on frequency interleaving. The configuration indicates the highest frequency RB and the lowest frequency RB for PSCCH communications in the frequency interleaving of RBs. The configuration includes a multiplexing configuration for time multiplexing physical sidelink control channel (PSCCH) communications and physical sidelink shared channel (PSSCH) communications on frequency interleaving.

[0141] A further embodiment of the present disclosure includes a first user equipment (UE). The first user equipment includes a unit for receiving, from a base station (BS), a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communications between the first UE and a second UE. The first user equipment also includes a unit for transmitting sidelink communications with the second UE using the frequency interleaved resources.

[0142] The first UE may also include one or more of the following features. For example, the first UE includes a unit for transmitting sidelink communication, wherein the unit is further configured to: based on the configuration, transmit the sidelink communication with the second UE by frequency multiplexing the physical sidelink control channel (PSCCH) signal and the physical sidelink shared channel (PSSCH) signal on the frequency interleaved resources. The frequency interleaved resources include a first frequency interleaving of resource blocks (RBs) evenly spaced in a shared radio frequency band, and wherein the unit for transmitting sidelink communication is further configured to: based on the configuration, transmit the PSCCH signal with the second UE in at least one of the highest frequency RBs or the lowest frequency RBs in the first frequency interleaving; and, based on the configuration, transmit the PSSCH signal with the second UE in all remaining RBs in the first frequency interleaving. The unit for transmitting sidelink communication is also configured to: further transmit the PSSCH signal with the second UE in at least a second frequency interleaving of RBs evenly spaced in the shared radio frequency band. The unit for transmitting the sidelink communication is also configured to transmit a PSCCH signal including sidelink control information (SCI) with the second UE, the SCI indicating the allocation of the second frequency interleave for transmitting the PSSCH signal. The SCI includes a bitmap containing a plurality of bits, each of the plurality of bits identifying a frequency interleave in a shared radio frequency band, and wherein the first of the plurality of bits identifies the second frequency interleave. The SCI indicates the starting frequency interleave and the number of one or more frequency interleaves for transmitting the PSSCH signal, and wherein the starting frequency interleave corresponds to the starting frequency interleave. The shared radio frequency band includes a plurality of subbands, and wherein the unit for transmitting the sidelink communication is also configured to transmit a PSCCH signal with the second UE, the PSCCH signal including sidelink control information (SCI) indicating which subbands of the plurality of subbands the second frequency interleave is located in. The first UE may include a unit for selecting the second frequency interleave for transmitting the PSSCH signal from the frequency interleave resource. The unit for transmitting sidelink communication is also configured to: based on the configuration, transmit a PSSCH signal and a PSCCH signal with a second UE in a first frequency interlace during a first time period, the PSCCH signal including sidelink control information (SCI), the SCI including an indication of a second time period for transmitting the PSSCH signal; and, based on the SCI, further transmit the PSSCH signal with the second UE in the first frequency interlace during a second time period. The first UE may include: a unit for selecting a first frequency interlace for transmitting the PSSCH signal from the frequency interlace resources in the second time period. The unit for transmitting sidelink communication is also configured to: based on the configuration, transmit the sidelink communication with the second UE by time division multiplexing a physical sidelink control channel (PSCCH) signal and a physical sidelink shared channel (PSSCH) signal on the frequency interlace resources.The means for transmitting the sidelink communication is further configured to transmit the sidelink communication based on listen-before-talk (LBT) in the shared radio frequency band.

[0143] A further embodiment of the present disclosure includes a base station (BS). The base station includes: a unit for determining a configuration of frequency interleaved resources in a shared radio frequency band for sidelink communication between a first user equipment (UE) and a second UE. The base station also includes a unit for sending the configuration for the sidelink communication to the first UE.

[0144] The BS may also include one or more of the following features. For example, the BS includes: wherein the unit for determining the configuration is also configured to determine the frequency interleaving of resource blocks (RBs) that are evenly spaced in the shared radio frequency band. The configuration includes: a multiplexing configuration for frequency multiplexing physical sidelink control channel (PSCCH) communications and physical sidelink shared channel (PSSCH) communications on frequency interleaving. The configuration indicates the highest frequency RB and the lowest frequency RB used for PSCCH communications in the frequency interleaving of RBs. The configuration includes: a multiplexing configuration for time multiplexing physical sidelink control channel (PSCCH) communications and physical sidelink shared channel (PSSCH) communications on frequency interleaving.

[0145] Any of a variety of different technologies and methods may be used to represent information and signals. 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.

[0146] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, DSP, ASIC, 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).

[0147] The functions described herein can be implemented with hardware, software executed by a processor, firmware, or any combination thereof. If implemented with software executed by a processor, the function can be stored on a computer-readable medium or transmitted by a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of the disclosure and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software, hardware, firmware, hard wiring, or any combination of these executed by a processor. The features that implement the functions can also be physically placed at various locations, including being distributed so that the parts that implement the functions at different physical locations. In addition, as used herein (including in the claims), "or" (for example, a list of entries ending with phrases such as "at least one of" or "one or more of") as used in a list of entries 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).

[0148] As will be apparent to those skilled in the art by now and depending on the specific application at hand, many modifications, substitutions and variations may be made to the materials, devices, configurations and methods of use of the apparatus of the present disclosure without departing from its spirit and scope. In view of this, the scope of the present disclosure should not be limited to the scope of the specific embodiments illustrated and described herein, as they are merely by way of some examples thereof, but should be fully commensurate with the scope of the appended claims and their functional equivalents.

Claims

1. A method of wireless communication, comprising: receiving, at a first user equipment (UE), a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communications between the first UE and a second UE, wherein the configuration for the frequency interleaved resources indicates a first interlace of resource blocks (RBs), wherein the shared radio frequency band comprises a plurality of subbands, wherein the RBs of the first interlace are evenly spaced in the shared radio frequency band, and wherein the configuration indicates a first resource portion comprising at least one of a highest frequency RB or a lowest frequency RB in the first interlace; and transmitting, by the first UE, a sidelink communication with the second UE using the frequency interlaced resources, wherein the transmitting comprises: Based on the configuration, frequency multiplexing a first portion of a physical sidelink shared channel (PSSCH) signal in the first interlace with a physical sidelink control channel (PSCCH) signal in a first time period, wherein the PSCCH signal includes sidelink control information (SCI) in at least one of the highest frequency RB or the lowest frequency RB in the first interlace, the SCI indicating a second interlace of RBs different from the first interlace, and the SCI further indicating which subbands of the plurality of subbands the second interlace is located in; and Based on the SCI, a second portion of the PSSCH signal is transmitted in the second interlace of RBs.

2. The method according to claim 1, wherein: The transmission includes: The PSSCH signal is transmitted, by the first UE, with the second UE in one or more RBs in the first interlace that are different from the at least one of the highest frequency RB or the lowest frequency RB based on the configuration.

3. The method according to claim 2, wherein: The RBs of the second interlace are evenly spaced in the shared radio frequency band.

4. The method according to claim 3, wherein: The SCI indicates an allocation of the second interlace for transmitting the PSSCH signal.

5. The method according to claim 4, wherein: The SCI indicates a starting frequency interlace and the number of one or more frequency interlaces used to transmit the PSSCH signal.

6. The method according to claim 1, further comprising: The second interlace for transmitting the PSSCH signal is selected by the first UE from the frequency interlace resources.

7. The method according to claim 1, wherein: The configuration indicates a first resource portion comprising one or more first symbols of a plurality of RBs of the first interlace, and wherein the transmitting comprises: Based on the configuration, the first UE transmits the sidelink communication with the second UE by time division multiplexing the PSCCH signal in the one or more first symbols and the PSSCH signal in the one or more second symbols on the frequency interlaced resources.

8. A method of wireless communication, comprising: Receiving, at a first user equipment (UE), a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between the first UE and a second UE, wherein the frequency interleaved resources comprise a first frequency interleave of resource blocks (RBs) evenly spaced in the shared radio frequency band, wherein the frequency interleaved resources comprise at least one of a highest frequency RB or a lowest frequency RB in the first frequency interleave; and transmitting, by the first UE, a sidelink communication with the second UE using the frequency interlaced resources, Wherein, the transmitting comprises: Based on the configuration, frequency multiplexing a physical sidelink control channel (PSCCH) signal and a physical sidelink shared channel (PSSCH) signal on the frequency interlace resources, the PSCCH signal including sidelink control information (SCI), the SCI indicating allocation of a second frequency interlace of RBs uniformly spaced in the shared radio frequency band for transmitting the PSSCH signal; Based on the configuration, transmitting the SCI in the at least one of the highest frequency RB or the lowest frequency RB in the first frequency interlace; Based on the configuration, transmitting the PSSCH signal in one or more RBs in the first frequency interlace that are different from the at least one of the highest frequency RB or the lowest frequency RB; and further transmitting the PSSCH signal in the second frequency interlace of RB, The SCI comprises a bitmap having a plurality of bits, and wherein a first bit of the plurality of bits identifies the second frequency interleaving, and wherein a second bit of the plurality of bits identifies one of the first frequency interleaving, or a third frequency interleaving different from the first frequency interleaving and the second frequency interleaving.

9. A method of wireless communication, comprising: Receiving, at a first user equipment (UE), a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communication between the first UE and a second UE, wherein the frequency interleaved resources comprise a first frequency interleave of resource blocks (RBs) evenly spaced in the shared radio frequency band, wherein the frequency interleaved resources comprise at least one of a highest frequency RB or a lowest frequency RB in the first frequency interleave; and transmitting, by the first UE, sidelink communications with the second UE using the frequency interleaved resources based on the configuration, Wherein, the transmitting comprises: frequency multiplexing a physical sidelink control channel (PSCCH) signal and a physical sidelink shared channel (PSSCH) signal on the frequency interlaced resources in a first time period, the PSCCH signal including sidelink control information (SCI), the SCI indicating a second time period for further transmitting the PSSCH signal; Based on the configuration, transmitting the SCI in the at least one of the highest frequency RB or the lowest frequency RB in the first frequency interlace; Based on the configuration, transmitting the PSSCH signal in one or more RBs different from the at least one of the highest frequency RB or the lowest frequency RB in the first frequency interlace; and Based on the SCI, the PSSCH signal is further transmitted in the first frequency interlace during the second time period.

10. The method according to claim 9, further comprising: The first frequency interlace is selected by the first UE from the frequency interlace resources in the second time period for transmitting the PSSCH signal.

11. A first user equipment (UE), comprising: A transceiver configured to: receiving, from a network entity, a configuration for frequency interleaved resources in a shared radio frequency band for sidelink communications between the first UE and a second UE, wherein the configuration for the frequency interleaved resources indicates a first interlace of resource blocks (RBs), wherein the shared radio frequency band comprises a plurality of subbands, wherein the RBs of the first interlace are evenly spaced in the shared radio frequency band, and wherein the configuration indicates a first resource portion comprising at least one of a highest frequency RB or a lowest frequency RB in the first interlace; and transmitting sidelink communications with the second UE using the frequency interlaced resources, wherein the transceiver configured to transmit is further configured to: Based on the configuration, frequency multiplexing a first portion of a physical sidelink shared channel (PSSCH) signal in the first interlace with a physical sidelink control channel (PSCCH) signal in a first time period, wherein the PSCCH signal includes sidelink control information (SCI) in at least one of the highest frequency RB or the lowest frequency RB in the first interlace, the SCI indicating a second interlace of RBs different from the first interlace, and the SCI further indicating which subbands of the plurality of subbands the second interlace is located in; and Based on the SCI, a second portion of the PSSCH signal is transmitted in the second interlace of RBs.

12. The first UE according to claim 11, wherein: The transceiver configured to transmit the sidelink communication is further configured to: Based on the configuration, the PSSCH signal is transmitted with the second UE in one or more RBs in the first interlace that are different from the at least one of the highest frequency RBs or the lowest frequency RBs.

13. The first UE according to claim 12, wherein: The RBs of the second interlace are evenly spaced in the shared radio frequency band.

14. The first UE according to claim 13, wherein: The SCI indicates an allocation of the second interlace for transmitting the PSSCH signal.

15. The first UE according to claim 12, wherein: The transceiver configured to transmit the sidelink communication is further configured to: transmitting the PSSCH signal and the PSCCH signal with the second UE in the first interlace during a first time period based on the configuration, the SCI including an indication of a second time period for transmitting the PSSCH signal; as well as Based on the SCI, the PSSCH signal is further transmitted with the second UE in the first interlace during the second time period.

16. The first UE according to claim 11, wherein: The configuration indicates a first resource portion comprising one or more first symbols of a plurality of RBs of the first interlace, and wherein the transceiver configured to transmit the sidelink communication is further configured to: Based on the configuration, the sidelink communication is transmitted with the second UE by time division multiplexing the PSCCH signal in the one or more first symbols and the PSSCH signal in the one or more second symbols on the frequency interlaced resources.

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