Methods, apparatus, and non-transitory computer-readable media for wireless communication

Abstract

A wireless communication system and method are provided that involves multiplexing sidelink synchronization signal block (S-SSB) transmissions with physical sidelink control channel (PSCCH) / physical sidelink shared channel (PSSCH) transmissions to achieve occupied channel bandwidth (OCB). A user equipment (UE) determines a multiplexing configuration for multiplexing sidelink transmissions with S-SSB transmissions in a sidelink bandwidth portion (BWP). The UE transmits S-SSB transmissions in the sidelink BWP during sidelink time slots. The UE also transmits sidelink transmissions in the sidelink BWP during sidelink time slots, wherein the S-SSB transmissions and sidelink transmissions are transmitted by multiplexing the sidelink transmissions and S-SSB transmissions based on the multiplexing configuration.

Description

Technical Field

[0001] This application relates to wireless communication systems, and more specifically, to multiplexing side-link synchronization signal block (S-SSB) transmissions with physical side-link control channel (PSCCH) / physical side-link shared channel (PSSCH) transmissions in a shared radio frequency band shared by multiple network operating entities (e.g., in shared spectrum or unlicensed spectrum). Background Technology

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

[0003] To meet the growing demand for extended mobile broadband connectivity, wireless communication technologies are evolving from Long Term Evolution (LTE) to Next Generation New Radio (NR), often referred to as fifth generation (5G). For example, NR is designed to provide lower latency, higher bandwidth or throughput, and greater reliability than LTE. NR is designed to operate across a wide range of frequency bands, from low-frequency bands below approximately 1 GHz and mid-frequency bands from approximately 1 GHz to approximately 6 GHz, to high-frequency bands such as millimeter wave (mm wave) bands. NR is also designed to operate across different spectrum types, from licensed spectrum to unlicensed and shared spectrum. Spectrum sharing allows operators to opportunistically aggregate spectrum to dynamically support high-bandwidth services. Spectrum sharing extends the advantages of NR technology to operational entities that may not have access to licensed spectrum.

[0004] In wireless communication networks, a BS can communicate with a UE in both uplink and downlink directions. LTE introduces sidelinks to allow a UE to send data to another UE without tunneling through the BS and / or the associated core network. LTE sidelink technology has been extended to provide device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, and / or cellular vehicle-to-everything (C-V2X) communication. Similarly, NR can be extended to support sidelink communication, D2D communication, V2X communication, and / or C-V2X on licensed and / or unlicensed frequency bands. Summary of the Invention

[0005] To provide a basic understanding of the techniques discussed, some aspects of this disclosure are outlined below. This overview is not a general summary of all anticipated features of this disclosure, and is neither intended to identify key or essential elements of all aspects of this disclosure, nor to depict the scope of any or all aspects of this disclosure. Its sole purpose is to present some concepts of one or more aspects of this disclosure in an overview form as a prelude to the more detailed description that follows.

[0006] For example, in one aspect of this disclosure, a method for wireless communication performed by a user equipment (UE) includes: determining a multiplexing configuration for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in a sidelink bandwidth portion (BWP); transmitting S-SSB transmissions in the sidelink BWP during a sidelink time slot; and transmitting sidelink transmissions in the sidelink BWP during a sidelink time slot, wherein transmitting S-SSB transmissions and transmitting sidelink transmissions includes: multiplexing the sidelink transmissions and S-SSB transmissions based on the multiplexing configuration.

[0007] In a further aspect of this disclosure, a method for wireless communication performed by a base station (BS) includes: determining a multiplexing configuration for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in a sidelink bandwidth portion (BWP); and transmitting the multiplexing configuration to a user equipment (UE).

[0008] In a further aspect of this disclosure, a user equipment (UE) includes a processor configured to: determine a multiplexing configuration for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in a sidelink bandwidth portion (BWP); and a transceiver configured to: transmit S-SSB transmissions in the sidelink BWP during a sidelink time slot; and transmit sidelink transmissions in the sidelink BWP during a sidelink time slot, wherein the transceiver configured to transmit S-SSB transmissions and sidelink transmissions is configured to: multiplex the sidelink transmissions and S-SSB transmissions based on the multiplexing configuration.

[0009] In an additional aspect of this disclosure, a base station (BS) includes a processor configured to: determine a multiplexing configuration for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in a sidelink bandwidth portion (BWP); and a transceiver configured to: transmit the multiplexing configuration to a user equipment (UE).

[0010] In a further aspect of this disclosure, a non-transitory computer-readable medium having program code recorded thereon, the program code comprising: code for causing a user equipment (UE) to determine a multiplexing configuration for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in a sidelink bandwidth portion (BWP); code for causing the UE to transmit S-SSB transmissions in the sidelink BWP during a sidelink time slot; and code for causing the UE to transmit sidelink transmissions in the sidelink BWP during a sidelink time slot, wherein the code for causing the UE to transmit S-SSB transmissions and the code for causing the UE to transmit sidelink transmissions are configured to multiplex the sidelink transmissions and S-SSB transmissions based on the multiplexing configuration.

[0011] In a further aspect of this disclosure, a non-transitory computer-readable medium having program code recorded thereon, the program code comprising: code for causing a base station (BS) to determine a multiplexing configuration for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in a sidelink bandwidth portion (BWP); and code for causing the BS to send the multiplexing configuration to a user equipment (UE).

[0012] In a further aspect of this disclosure, a user equipment (UE) includes: a unit for determining a multiplexing configuration for multiplexing sidelink transmissions and sidelink synchronization signal block (S-SSB) transmissions in a sidelink bandwidth portion (BWP); a unit for transmitting S-SSB transmissions in the sidelink BWP during a sidelink time slot; and a unit for transmitting sidelink transmissions in the sidelink BWP during a sidelink time slot, wherein the unit for transmitting S-SSB transmissions and the unit for transmitting sidelink transmissions are configured to multiplex the sidelink transmissions and S-SSB transmissions based on the multiplexing configuration.

[0013] In an additional aspect of this disclosure, a base station (BS) includes: a unit for determining a multiplexing configuration for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in a sidelink bandwidth portion (BWP); and a unit for transmitting the multiplexing configuration to a user equipment (UE).

[0014] Other aspects, features, and embodiments of the invention will become apparent to those skilled in the art after reviewing the following description of specific, exemplary embodiments of the invention in conjunction with the accompanying drawings. While features of the invention may be discussed below with respect to certain embodiments and drawings, all embodiments of the invention may include one or more of the advantageous features discussed herein. In other words, while one or more embodiments may be discussed as having certain advantageous features, one or more of these features may also be used according to the various embodiments of the invention discussed herein. Similarly, while exemplary embodiments may be discussed below as device, system, or method embodiments, it should be understood that such exemplary embodiments can be implemented in a wide variety of devices, systems, and methods. Attached Figure Description

[0015] Figure 1 A wireless communication network according to some aspects of this disclosure is shown.

[0016] Figure 2 A wireless communication network providing side link communication according to some aspects of this disclosure is shown.

[0017] Figure 3 The structure of a radio frame according to some aspects of this disclosure is shown.

[0018] Figure 4 (A) shows a Synchronization Signal Block (SSB) transmission scheme according to some aspects of the present disclosure, (B) shows a Side Link Synchronization Signal Block (S-SSB) transmission scheme according to some aspects of the present disclosure, and (C) shows an S-SSB transmission scheme according to some aspects of the present disclosure.

[0019] Figure 5 A side link resource allocation scheme based on frequency-interleaved waveforms is shown according to some aspects of this disclosure.

[0020] Figure 6 The S-SSB and Physical Side Crosslink Control Channel (PSCCH) / Physical Side Crosslink Shared Channel (PSSCH) multiplexing schemes according to some aspects of this disclosure are shown.

[0021] Figure 7 S-SSB and PSCCH / PSSCH multiplexing schemes according to some aspects of this disclosure are shown.

[0022] Figure 8 S-SSB and PSCCH / PSSCH multiplexing schemes according to some aspects of this disclosure are shown.

[0023] Figure 9S-SSB and PSCCH / PSSCH multiplexing schemes according to some aspects of this disclosure are shown.

[0024] Figure 10 S-SSB and PSCCH / PSSCH multiplexing schemes according to some aspects of this disclosure are shown.

[0025] Figure 11 S-SSB and PSCCH / PSSCH multiplexing schemes according to some aspects of this disclosure are shown.

[0026] Figure 12 S-SSB and PSCCH / PSSCH multiplexing schemes according to some aspects of this disclosure are shown.

[0027] Figure 13 This is a block diagram of an exemplary base station (BS) based on some aspects of this disclosure.

[0028] Figure 14 This is a block diagram of an exemplary user equipment (UE) based on some aspects of this disclosure.

[0029] Figure 15 This is a flowchart of a wireless communication method based on some aspects of this disclosure.

[0030] Figure 16 This is a flowchart of a wireless communication method based on some aspects of this disclosure. Detailed Implementation

[0031] The detailed description described below, taken in conjunction with the accompanying drawings, is intended as a description of various configurations, and not as representing only the configurations in which the concepts described herein can be implemented. To provide a thorough understanding of the various concepts, the detailed description includes specific details. However, it will be apparent to those skilled in the art that these concepts can be implemented without using these specific details. In some cases, to avoid obscuring these concepts, well-known structures and components are shown in block diagram form.

[0032] In summary, this disclosure relates to wireless communication systems (also known as wireless communication networks). In various embodiments, techniques and apparatus can be used in wireless communication networks such as Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA) networks, Frequency Division Multiple Access (FDMA) networks, Orthogonal FDMA (OFDMA) networks, Single Carrier FDMA (SC-FDMA) networks, LTE networks, Global System for Mobile Communications (GSM) networks, 5G or New Radio (NR) networks, and other communication networks. As described herein, the terms "network" and "system" are often used interchangeably.

[0033] OFDMA networks can implement wireless technologies such as evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE 802.20, Flash-OFDM, and others. UTRA, E-UTRA, and GSM are part of the Universal Mobile Telecommunications System (UMTS). Specifically, Long Term Evolution (LTE) is a version of UMTS that adopts E-UTRA. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents provided by an organization called the 3rd Generation Partnership Project (3GPP), and CDMA2000 is described in documents from an organization called 3rd Generation Partnership Project 2 (3GPP2). These various wireless technologies and standards are either known or under development. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration among telecommunications alliances aimed at defining globally applicable third-generation (3G) mobile phone specifications. 3GPP Long Term Evolution (LTE) is a 3GPP initiative aimed at improving the UMTS mobile phone standard. 3GPP can specify specifications for next-generation mobile networks, mobile systems, and mobile devices. This disclosure focuses on the development of wireless technologies from LTE, 4G, 5G, NR, and beyond, which use a set of new and different radio access technologies or radio air interfaces to share access to the radio spectrum between networks.

[0034] Specifically, 5G networks are expected to utilize a variety of deployments, spectrums, services, and devices through a unified OFDM-based air interface. To achieve these goals, in addition to the development of new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also being considered. 5G NR will be able to scale to provide coverage for: (1) massive Internet of Things (IoT) with ultra-high density (e.g., ~1M nodes / km2), ultra-low complexity (e.g., ~several tens of bits / second), ultra-low energy (e.g., ~10+ years of battery life), and deep coverage with the ability to reach challenging locations; (2) mission-critical controls with robust security to protect sensitive personal, financial, or confidential information; ultra-high reliability (e.g., ~99.9999% reliability); ultra-low latency (e.g., ~1ms); and users with a wide range of mobility or lack of mobility; and (3) enhanced mobile broadband with extremely high capacity (e.g., ~10Tbps / km2), extreme data rates (e.g., multi-Gbps rates, 100+Mbps user experience rates), and deep awareness with improved discovery and optimization.

[0035] 5G NR communication systems can be implemented using optimized OFDM-based waveforms with scalable digital schemes and transmission time intervals (TTI). Additional features may include: a common, flexible framework for efficiently multiplexing services and features using dynamic, low-latency Time Division Duplex (TDD) / Frequency Division Duplex (FDD) designs; and improved wireless technologies such as massive MIMO, robust millimeter-wave (mmWave) transmission, improved channel coding, and device-centric mobility. The scalability of the digital scheme in 5G NR, through scaling subcarrier spacing, efficiently addresses the operation of various services across diverse spectrums and deployments. For example, in various outdoor and macro coverage deployments with FDD / TDD implementations below 3 GHz, subcarrier spacing can occur at 15 kHz over bandwidths (BWs) such as 5, 10, and 20 MHz. For other outdoor and small-cell coverage deployments with TDD above 3 GHz, subcarrier spacing can occur at 30 kHz over an 80 / 100 MHz BW. For various other indoor broadband implementations using TDD in the unlicensed portion of the 5 GHz band, subcarrier spacing can occur at 60 kHz over a 160 MHz BW. Finally, for various deployments using TDD at 28 GHz and transmitting via mmWave components, subcarrier spacing can occur at 120 kHz over a 500 MHz BW.

[0036] 5G NR's scalable digital schemes facilitate scalable TTIs for various 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 transmission to begin at symbol boundaries. 5G NR also anticipates self-contained integrated subframe designs with UL / downlink scheduling information, data, and acknowledgments within the same subframe. Self-contained integrated subframes support communication in unlicensed or contention-based shared spectrum, and adaptive UL / downlink (which can be flexibly configured on a per-cell basis to dynamically switch between UL and downlink to meet current service demands).

[0037] The following further describes various other aspects and features of this disclosure. It will be apparent that the teachings herein can be embodied in a wide variety of forms, and that any particular structure, function, or both disclosed herein are merely representative and not limiting. Based on the teachings herein, those skilled in the art will understand that the aspects disclosed herein can be implemented independently of any other aspects, and that two or more of these aspects can be combined in various ways. For example, any number of the aspects briefly described herein can be used to implement an apparatus or method. Furthermore, other structures, functions, or structures and functions other than or different from one or more of the aspects set forth herein can be used to implement such an apparatus or method. For example, a method can be implemented as part of a system, device, or apparatus, and / or as instructions stored on a computer-readable medium for execution on a processor or computer. Furthermore, an aspect may include at least one element of the claims.

[0038] Sidelink communication refers to communication between user equipment (UE) that is transmitted without tunneling through a base station (BS) and / or core network. Sidelink communication can be transmitted on the Physical Sidelink Control Channel (PSCCH) and the Physical Sidelink Shared Channel (PSSCH). The PSCCH and PSSCH are similar to the Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH) in downlink (DL) communication between the BS and UE. For example, the PSCCH may carry sidelink control information (SCI), and the PSSCH may carry sidelink data (e.g., user data). Each PSCCH is associated with a corresponding PSSCH, where the SCI in the PSCCH may carry reservation and / or scheduling information for sidelink data transmission in the associated PSSCH. Use cases for sidelink communication can include V2X, enhanced mobile broadband (eMBB), industrial IoT (IIoT), and / or NR-lite.

[0039] As used herein, the term "sidelink UE" can refer to a user equipment device performing device-to-device communication or other types of communication with another user equipment device independently of any tunnel transmission through a BS (e.g., gNB) and / or associated core network. As used herein, the term "sidelink transmitting UE" can refer to a user equipment device performing a sidelink transmitting operation. As used herein, the term "sidelink receiving UE" can refer to a user equipment device performing a sidelink receiving operation. As used herein, the terms "sync UE" or "sidelink sync UE" refer to a sidelink UE that transmits an S-SSB to facilitate sidelink communication among multiple sidelink UEs (e.g., when operating in a standalone sidelink system), and these terms are interchangeable without departing from the scope of this disclosure. A sidelink UE can operate as a transmitting sidelink UE at one time and as a receiving sidelink UE at another time. A sidelink sync UE can also operate as a transmitting sidelink UE at one time and as a receiving sidelink UE at another time.

[0040] NR supports two Radio Resource Allocation (RRA) modes for sidelinks on licensed spectrum: Mode 1 RRA and Mode 2 RRA. Mode 1 RRA supports network-controlled RRA, which can be used for sidelink communication within coverage. For example, the serving BS (e.g., gNB) can determine radio resources on behalf of the sidelink UE and send indications of radio resources to the sidelink UE. In some aspects, the serving BS utilizes downlink control information (DCI) to grant sidelink transmissions. However, significant base station involvement exists for this mode, and it is only operational when the sidelink UE is within the serving BS's coverage area. Mode 2 RRA supports autonomous RRA, which can be used for sidelink UEs outside coverage or partially covered sidelink UEs. For example, the serving BS can configure a sidelink resource pool for a sidelink UE (e.g., when within the serving BS's coverage), which can be used for sidelinks when the sidelink UE is outside the serving BS's coverage area. The serving BS can also configure a sidelink UE to operate as a sidelink synchronization UE to provide sidelink system information to sidelink UEs outside coverage for transmitting sidelink communication. For example, a sidelink synchronization UE can provide sidelink system information by broadcasting a sidelink synchronization signal block (S-SSB). The S-SSB can be similar to an SSB broadcast by the BS. For example, the S-SSB may include synchronization signals and / or sidelink system information. Some examples of sidelink system information may include sidelink bandwidth portion (BWP) configuration, one or more sidelink transmit resource pools and / or one or more sidelink receive resource pools, S-SSB transmission-related parameters (e.g., sidelink time slots and / or S-SSB transmission periods configured for S-SSB transmission), and / or any other configuration information related to sidelink communication.

[0041] Deploying NR on unlicensed spectrum is known as NR Unlicensed (NR-U). Some research has been conducted on NR-U deployments above the 5 GHz unlicensed band. The Federal Communications Commission (FCC) and the European Telecommunications Standards Institute (ETSI) are working to regulate 6 GHz as a new unlicensed band for wireless communications. The addition of the 6 GHz band allows for hundreds of megahertz (MHz) of bandwidth (BW) available for unlicensed band communications. Additionally, NR-U can also be deployed on the 2.4 GHz unlicensed band, which is currently shared by various Radio Access Technologies (RATs) such as IEEE 802.11 Wireless LAN (WLAN) or WiFi and / or Licensed Assisted Access (LAA) (i.e., NAT). Sidelinks can benefit from utilizing the additional bandwidth available in the unlicensed spectrum. However, channel access in some unlicensed spectrum may be subject to regulatory control. For example, some unlicensed bands may impose restrictions on the power spectral density (PSD) and / or occupied channel bandwidth (OCB) for transmissions in the unlicensed band. For example, the unlicensed National Information Infrastructure (UNII) radio band has approximately 70% of the OCB requirements.

[0042] Some sidelink systems can operate on a 20MHz bandwidth in an unlicensed frequency band. The BS can configure a sidelink resource pool on the 20MHz band for sidelink communication. The sidelink resource pool is typically divided into multiple frequency sub-channels or frequency sub-bands (e.g., approximately 5MHz each), and the sidelink UE can select sidelink resources (e.g., sub-channels) from the sidelink resource pool for sidelink communication. To satisfy approximately 70% OCB, the sidelink resource pool can utilize a frequency interleaving structure. For example, a frequency interleaving-based sidelink resource pool can include multiple frequency interleavings on a 20MHz band, where each frequency interleaving can include multiple resource blocks (RBs) distributed across the 20MHz band. For example, the multiple RBs of the frequency interleaving can be separated from each other by one or more other RBs in the 20MHz unlicensed band. The sidelink UE can select sidelink resources with the form of frequency interleavings from the sidelink resource pool for sidelink communication. In other words, sidelink transmission can utilize frequency-interleaved waveforms to satisfy the OCB of the unlicensed frequency band. However, S-SSBs are transmitted in a set of consecutive RBs (e.g., in approximately eleven consecutive RBs). Therefore, a single S-SSB transmission may not meet the OCB requirements for unlicensed bands. Thus, it may be desirable for sidelink-synchronized UEs to multiplex S-SSB transmissions with sidelink communications (e.g., PSCCH and PSSCH) in the time slots configured for S-SSB transmissions, so that the transmissions of the sidelink-synchronized UEs in the time slots can meet the OCB requirements.

[0043] This application describes a mechanism for a sidelink UE to multiplex S-SSB transmissions with sidelink transmissions within a frequency band to satisfy the band's Open Circuit Limit (OCB). For example, the sidelink UE can determine a multiplexing configuration for multiplexing sidelink transmissions with S-SSB transmissions within a sidelink BWP. The sidelink UE can transmit S-SSB transmissions within the sidelink BWP during a sidelink time slot. The sidelink UE can transmit sidelink transmissions within the sidelink BWP during a sidelink time slot by multiplexing sidelink transmissions and S-SSB transmissions based on the multiplexing configuration.

[0044] In some aspects, the sidelink UE can transmit S-SSB transmissions at an offset from the lowest frequency of the sidelink BWP based on a synchronization grid (e.g., an NR-U synchronization grid). In other aspects, the sidelink UE can transmit S-SSB transmissions aligned with the lowest frequency of the sidelink BWP. For example, a synchronization grid can be defined for the sidelink such that S-SSB transmissions can be aligned with the lowest frequency of the sidelink BWP.

[0045] In some aspects, the multiplexing configuration includes a configuration for multiplexing S-SSB transmissions with frequency-interleaved waveform sidelink transmissions to meet OCB requirements. For example, sidelink transmissions may include frequency- or time-multiplexed PSCCH and PSSCH transmissions within a frequency interleaved body having spaced RBs within the sidelink BWP. The PSSCH transmission may include at least one of sidelink data or Channel State Information Reference Signal (CSI-RS). To avoid conflicts with S-SSB transmissions, the sidelink UE may puncture the PSCCH and / or PSSCH transmissions at RBs that at least partially overlap with the S-SSB transmissions. In some other cases, the sidelink UE may rate-match the PSCCH and / or PSSCH transmissions around RBs that at least partially overlap with the S-SSB transmissions.

[0046] In some aspects, the multiplexing configuration includes a configuration for multiplexing S-SSB transmissions with sub-channel-based sidelink transmissions to meet OCB requirements. For example, sidelink transmissions may include time-multiplexed PSCCH and PSSCH transmissions within a sub-channel comprising consecutive RBs in a sidelink BWP. For example, S-SSB transmissions may be transmitted in the low-frequency portion of the sidelink BWP, and sidelink transmissions may be transmitted in sub-channels located in the high-frequency portion of the sidelink BWP to meet OCB requirements.

[0047] In some aspects, the BS can configure different sidelink resource pools for time slots associated with S-SSB transmissions and for time slots not associated with S-SSB transmissions. For example, the BS can configure a first resource pool with a frequency interleaving structure for time slots not configured for S-SSB transmissions. The first resource pool can include multiple frequency interleavings (e.g., distributed RBs), where each frequency interleaving can carry PSCCH / PSSCH transmissions. The BS can configure a second resource pool with a subchannel-based structure for time slots configured for S-SSB transmissions. The second resource pool can include multiple frequency subchannels (e.g., consecutive RBs), where each subchannel can carry PSCCH / PSSCH transmissions. To satisfy the OCB in the sidelink time slots configured for S-SSB transmissions, the sidelink UE (e.g., a sidelink synchronous UE) can transmit S-SSB transmissions multiplexed with PSCCH / PSSCH transmissions. For example, S-SSB transmissions can be transmitted in the lower frequency portion of the frequency resources of the SL BWP, and PSCCH / PSSCH transmissions can be transmitted in the higher frequency portion of the frequency resources of the sidelink BWP.

[0048] This disclosure offers several benefits. For example, multiplexing S-SSB transmissions with PSCCH / PSSCH transmissions by a sidelink UE (e.g., a sidelink synchronization UE) allows the sidelink UE's transmissions to meet OCB requirements. Using frequency-interleaved waveform PSCCH / PSSCH transmissions for multiplexing with S-SSB transmissions guarantees OCB compliance. Using sub-channel-based PSCCH / PSSCH transmissions for multiplexing with S-SSB transmissions provides better compatibility with S-SSB transmissions because sub-channels at higher frequency locations can be selected to meet OCB without overlapping with S-SSB transmissions. Therefore, in the case of sub-channel-based PSCCH / PSCCH transmissions, puncturing or rate matching of PSCCH and / or PSSCH transmissions can be avoided. For example, using the frequency-interleaved sidelink resource pool for sidelink time slots not configured for S-SSB transmission, and using the sub-channel-based sidelink resource pool for sidelink time slots configured for S-SSB transmission, can provide flexibility for sidelink communication, such as maintaining the frequency-interleaved waveform for PSCCH / PSSCH transmission most of the time and occasionally switching to sub-channel-based PSCCH / PSSCH transmission for multiplexing with S-SSB transmission.

[0049] Figure 1A wireless communication network 100 according to some aspects of this disclosure is illustrated. Network 100 may be a 5G network. Network 100 includes several base stations (BSs) 105 (labeled 105a, 105b, 105c, 105d, 105e, and 105f, respectively) and other network entities. BS 105 may be a station communicating with 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 that specific geographic coverage area of ​​BS 105 and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0050] BS105 can provide communication coverage for macrocells or small cells (e.g., picocells or femtocells) and / or other types of cells. Macrocells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with service subscriptions to network providers. Small cells (e.g., picocells) typically cover a relatively small geographic area and allow unrestricted access by UEs with service subscriptions to network providers. Small cells (e.g., femtocells) also typically cover a relatively small geographic area (e.g., residential areas) and, in addition to unrestricted access, provide restricted access by UEs associated with that femtocell (e.g., UEs in a Closed Subscriber Group (CSG), UEs for users in a residential area, etc.). A BS used for macrocells can be referred to as a macro BS. A BS used for small cells can be referred to as a small cell BS, pico BS, femtocell BS, or home BS. Figure 1 In the examples shown, BS105d and 105e can be conventional macro BSs, while BS105a-105c can be macro BSs implemented using one of three-dimensional (3D), full-dimensional (FD), or massive MIMO. BS105a-105c can utilize their higher-dimensional MIMO capabilities to employ 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacity. BS105f can be a small cell BS, which can be a home node or a portable access point. BS105 can support one or more (e.g., two, three, four, etc.) cells.

[0051] Network 100 can support synchronous or asynchronous operation. For synchronous operation, BSs can have similar frame timings, and transmissions from different BSs can be approximately time-aligned. For asynchronous operation, BSs can have different frame timings, and transmissions from different BSs can be time-disaligned.

[0052] UE 115 is distributed throughout the wireless network 100, and each UE 115 can be stationary or mobile. UE 115 may also be referred to as a terminal, mobile station, subscriber unit, station, etc. UE 115 can be a cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, tablet computer, laptop computer, cordless phone, wireless local loop (WLL) station, etc. In one aspect, UE 115 can be a device including a Universal Integrated Circuit Card (UICC). In another aspect, UE 115 can be a device without a UICC. In some aspects, UEs without a UICC may also be referred to as IoT devices or Internet of Things (IoE) devices. UEs 115a-115d are examples of mobile smartphone-type devices accessing the network 100. UE 115 can also be a machine specifically configured for connected communications (including Machine Type Communication (MTC), Enhanced MTC (eMTC), Narrowband IoT (NB-IoT), etc.). UE 115e-115h are examples of various machines configured for communication and accessing network 100. UE 115i-115k are examples of vehicles equipped with wireless communication devices configured for communication and accessing network 100. UE 115 is capable of communicating with any type of BS (whether macro BS, small cell, etc.). Figure 1 In the context, lightning (e.g., communication link) indicates radio transmissions between UE 115 and serving BS 105 (which is a BS designated to serve UE 115 on the downlink (DL) and / or uplink (UL), desired transmissions between BS 105, backhaul transmissions between BS 105, or sidelink transmissions between UE 115.

[0053] In operation, BS105a-105c can use 3D beamforming and cooperative spatial technologies (e.g., Cooperative Multipoint (CoMP) or Multi-Connection) to service UEs 115a and 115b. Macro BS105d can perform backhaul communication with BS105a-105c and small cells (BS 105f). Macro BS105d can also transmit and receive multicast services customized for 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 (e.g., Amber Alert or Grey Alert).

[0054] BS105 can also communicate with the core network. The core network can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. At least some of the BS105s (e.g., examples of gNBs or Access Node Controllers (ANCs)) can interface with the core network via backhaul links (e.g., NG-C, NG-U, etc.) and can perform radio configuration and scheduling for communication with UE 115. In various examples, the BS105s can communicate directly or indirectly (e.g., via the core network) with each other on backhaul links (e.g., X1, X2, etc.), which can be wired or wireless communication links.

[0055] Network 100 can also support mission-critical communication using ultra-reliable and redundant links for mission-critical devices (e.g., UE 115e, which may be a drone). Redundant communication links with UE 115e may include links from macro BS 105d and 105e, and links from small cell BS 105f. Other machine-type devices (e.g., UE 115f (e.g., a thermometer), UE 115g (e.g., a smart meter), and UE 115h (e.g., a wearable device)) can communicate directly with the BSs (e.g., small cell BS 105f and macro BS 105e) via network 100, or in a multi-step configuration via communication with another user device that relays its information to the network (e.g., UE 115f transmits temperature measurement information to a smart meter (UE 115g), which is then reported to the network via small cell BS 105f). Network 100 can also provide additional network efficiency through dynamic, low-latency TDD / FDD communications, such as V2V, V2X, C-V2X communications between UE 115i, 115j, or 115k and other UE 115 and / or vehicle-to-infrastructure (V2I) communications between UE 115i, 115j, or 115k and BS105.

[0056] In some implementations, network 100 uses OFDM-based waveforms for communication. An OFDM-based system can divide the system BW into multiple (K) orthogonal subcarriers, which are also commonly referred to as subcarriers, tones, bands, etc. Data can be used to modulate each subcarrier. In some cases, the 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 cases, the subcarrier spacing and / or the duration of the time interval (TTI) can be scalable.

[0057] In some aspects, BS105 can 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 can be in the form of radio frames. Radio frames can be divided into multiple subframes or time slots, for example, approximately 10. Each time slot can be further divided into micro-time slots. In FDD mode, simultaneous UL and DL transmissions can occur in different frequency bands. For example, each subframe includes UL subframes in the UL band and DL subframes in the DL band. In TDD mode, UL and DL transmissions occur in different time periods using the same frequency band. For example, a subset of subframes in a radio frame (e.g., DL subframes) can be used for DL ​​transmission, while another subset of subframes in the radio frame (e.g., UL subframes) can be used for UL transmission.

[0058] DL subframes and UL subframes can be further divided into several regions. For example, each DL or UL subframe can have a predefined region for the transmission of reference signals, control information, and data. Reference signals are predetermined signals that facilitate communication between BS105 and UE 115. For example, reference signals can have a specific pilot pattern or structure, wherein pilot tones can span an operating BW or frequency band, and each pilot tone is located at a predefined time and predefined frequency. For example, BS105 can transmit cell-specific reference signals (CRS) and / or channel state information-reference signals (CSI-RS) to enable UE 115 to estimate the DL channel. Similarly, UE 115 can transmit sounding reference signals (SRS) to enable BS105 to estimate the UL channel. Control information may include resource allocation and protocol control. Data may include protocol data and / or operational data. In some aspects, BS105 and UE 115 can communicate using self-contained subframes. Self-contained subframes may include portions for DL ​​communication and portions for UL communication. Self-contained subframes can be DL-centric or UL-centric. DL-centric subframes can include a longer duration for DL ​​communication than for UL communication. UL-centric subframes can include a longer duration for UL communication than for DL ​​communication.

[0059] In some aspects, network 100 may be an NR network deployed on licensed spectrum. BS 105 may transmit synchronization signals (e.g., including primary synchronization signal (PSS) and secondary synchronization signal (SSS)) in network 100 to facilitate synchronization. BS 105 may broadcast system information associated with network 100 (e.g., including primary information block (MIB), residual system information (RMSI), and other system information (OSI)) to facilitate initial network access. In some cases, BS 105 may broadcast PSS, SSS, and / or MIB in the form of synchronization signal block (SSB) on the physical broadcast channel (PBCH), and may broadcast RMSI and / or OSI on the physical downlink shared channel (PDSCH).

[0060] In some respects, UE 115 attempting to access network 100 can perform an initial cell search by detecting a PSS from BS 105. The PSS can provide time-slot synchronization and indicate a physical layer identification value. Subsequently, UE 115 can receive an SSS. The SSS can provide radio frame synchronization and provide a cell identification value, which can be combined with the physical layer identification value to identify the cell. The PSS and SSS can be located in the center portion of the carrier or at any suitable frequency within the carrier.

[0061] After receiving the PSS and SSS, UE 115 can 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, UE 115 can receive the RMSI and / or OSI. The RMSI and / or OSI may include Radio Resource Control (RRC) information related to: Random Access Channel (RACH) procedures, paging, Control Resource Set (CORESET) for Physical Downlink Control Channel (PDCCH) monitoring, Physical UL Control Channel (PUCCH), Physical UL Shared Channel (PUSCH), power control, and SRS.

[0062] After obtaining the MIB, RMSI, and / or OSI, UE 115 can perform a random access procedure to establish a connection with BS 105. In some examples, the random access procedure can be a four-step random access procedure. For example, UE 115 can send a random access preamble, and BS 105 can respond using a random access response. The random access response (RAR) may include a detected random access preamble identifier (ID) corresponding to the random access preamble, timing advance (TA) information, UL grant, temporary cell radio network temporary identifier (C-RNTI), and / or backoff indicator. Upon receiving the random access response, UE 115 can send a connection request to BS 105, and BS 105 can respond using a connection response. The connection response may indicate contention resolution. In some examples, the random access preamble, RAR, connection request, and connection response may be referred to as message 1 (MSG1), message 2 (MSG2), message 3 (MSG3), and message 4 (MSG4), respectively. In some examples, the random access procedure can be a two-step random access procedure, where UE 115 can send the random access preamble and connection request in a single transmission, and BS105 can respond by sending the random access response and connection response in a single transmission.

[0063] After the connection is established, UE 115 and BS 105 can enter the normal operation phase, during which they can exchange operational data. For example, BS 105 can schedule UE 115 to perform UL and / or DL ​​communication. BS 105 can send UL and / or DL ​​scheduling permission to UE 115 via PDCCH. The scheduling permission can be sent in the form of DL control information (DCI). BS 105 can send DL communication signals (e.g., carrying data) to UE 115 via PDSCH based on the DL scheduling permission. UE 115 can send UL communication signals to BS 105 via PUSCH and / or PUCCH based on the UL scheduling permission.

[0064] In some aspects, network 100 can operate on a system BW or a component carrier (CC) BW. Network 100 can divide the system BW into multiple BWPs (e.g., portions). BS 105 can dynamically assign UE 115 to operate on a particular BWP (e.g., a portion of the system BW). The assigned BWP can be referred to as the active BWP. UE 115 can monitor the active BWP in response to signaling information from BS 105. BS 105 can schedule UE 115 to perform UL or DL ​​communication on the active BWP. In some aspects, BS 105 can assign a pair of BWPs within a CC to UE 115 for UL and DL communication. For example, the BWP pair may include one BWP for UL communication and one BWP for DL ​​communication.

[0065] In some aspects, network 100 can operate on a shared channel, which may include a shared frequency band or an unlicensed frequency band. For example, network 100 may be an NR unlicensed (NR-U) network operating on an unlicensed frequency band. In such aspects, BS 105 and UE 115 may be operated by multiple network operating entities. To avoid collisions, BS 105 and UE 115 may employ an LBT procedure to monitor transmission opportunities (TXOPs) in the shared channel. The wireless communication device may perform LBT in the shared channel. LBT is a channel access scheme that can be used in unlicensed spectrum. When LBT results in LBT success (the wireless communication device wins the contention for the wireless medium), the wireless communication device can access the shared medium to transmit and / or receive data. For example, a transmitting node (e.g., BS 105 or UE 115) may perform LBT before transmitting in the channel. When LBT succeeds, the transmitting node may continue transmitting. 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 below a threshold, LBT results in a pass. Conversely, when the signal energy measured from the channel exceeds the threshold, LBT results in a failure. In another example, LBT can be based on signal detection. For example, when no channel reservation signal (e.g., a predetermined preamble signal) is detected in the channel, LBT results in a pass. Conversely, when a channel reservation signal is detected in the channel, LBT results in a failure. TXOP can also be referred to as Channel Occupancy Time (COT).

[0066] In some respects, network 100 can provide sidelink communication to allow UE 115 to communicate with another UE 115 without tunneling through BS105 and / or the core network, such as... Figure 2As shown above, sidelink communication can be transmitted on the PSCCH and PSSCH. For example, the PSCCH can carry an SCI, and the PSSCH can carry an SCI and / or sidelink data (e.g., user data). Each PSCCH is associated with a corresponding PSSCH, where the SCI in the PSCCH can carry reservation and / or scheduling information for sidelink data transmission in the associated PSSCH. In some examples, the transmitting sidelink UE 115 can indicate the SCI in two phases. In the first phase SCI, the UE 115 can transmit an SCI in the PSCCH carrying information for resource allocation and decoding of the second phase SCI. The first phase SCI can include at least one of the following: priority, PSSCH resource assignment, resource reservation period (if enabled), PSSCH DMRS mode (if more than one mode is configured), second phase SCI format (e.g., the size of the second phase SCI), amount of resources for the second phase SCI, number of PSSCH demodulation reference signal (DMRS) ports, modulation and coding scheme (MCS), etc. In the second-stage SCI, UE 115 can transmit the SCI within the PSSCH, which carries information for decoding the PSSCH. The second-stage SCI may include a bit L1 destination identifier (ID), an 8-bit L1 source ID, a HARQ process ID, a new data indicator (NDI), a redundancy version (RV), etc. It should be understood that these are examples, and the first-stage SCI and / or the second-stage SCI may include or indicate additional information or information different from those provided in the examples. Sidelink communication can also be transmitted on the physical side link feedback control channel (PSFCH), which indicates acknowledgment (ACK) - negative acknowledgment (NACK) for previously transmitted PSSCHs.

[0067] In some aspects, BS105 can configure UE 115 to operate as a sidelink synchronization UE 115 to provide sidelink system information for other sidelink UEs 115 (which may be outside the coverage of BS105) to transmit sidelink communications. The sidelink synchronization UE 115 can transmit sidelink system information in the form of an S-SSB. The S-SSB may include synchronization signals (e.g., PSS and / or SSS) and sidelink system information such as sidelink BWP configuration, one or more sidelink transmit resource pools and / or one or more sidelink receive resource pools, S-SSB transmission-related parameters (e.g., sidelink time slots and / or S-SSB transmission periods configured for S-SSB transmission) and / or any other configuration information related to sidelink communications. In some aspects, BS105 can configure the sidelink synchronization UE 115 to transmit S-SSBs according to a synchronization grid defined for NR-U. In some cases, an S-SSB based on an NR-U synchronization grid can be offset from the lowest frequency of the corresponding side link BWP in which the S-SSB is transmitted. In other aspects, the BS105 can transmit an S-SSB based on a synchronization grid defined for the side link. The side link synchronization grid can be defined such that the S-SSB can be aligned with the lowest frequency of the corresponding side link BWP in which the S-SSB is transmitted.

[0068] In some aspects, to satisfy a particular OCB, for example when operating on an unlicensed frequency band, PSCCH / PSSCH transmissions may utilize frequency-interleaved waveforms. When using frequency-interleaved waveforms, PSCCH and PSSCH transmissions can be multiplexed in time and / or frequency. To satisfy an OCB in a sidelink time slot configured for S-SSB transmissions, the sidelink synchronization UE 115 may transmit an S-SSB transmission multiplexed with PSCCH / PSSCH transmissions using frequency-interleaved waveforms. The PSSCH transmission may include at least one of sidelink data or CSI-RS. In some aspects, BS 105 may configure different sidelink resource pools for time slots associated with S-SSB transmissions and for time slots not associated with S-SSB transmissions. For example, BS 105 may configure a first resource pool with a frequency-interleaved structure for time slots not configured for S-SSB transmissions. The first resource pool may include multiple frequency interleavings (e.g., distributed RBs), where each frequency interleaving can carry PSCCH / PSSCH transmissions. BS105 can configure a second resource pool with a sub-channel-based structure for time slots configured for S-SSB transmissions. The second resource pool can include multiple frequency sub-channels (e.g., consecutive RBs), where each sub-channel can carry PSCCH / PSSCH transmissions. To satisfy the OCB in the sidelink time slots configured for S-SSB transmissions, the sidelink synchronous UE 115 can transmit S-SSB transmissions multiplexed with PSCCH / PSSCH transmissions. For example, S-SSB transmissions can be transmitted in frequency resources located in the lower frequency portion of the sidelink BWP, and PSCCH / PSSCH transmissions can be transmitted in frequency resources located in the higher frequency portion of the sidelink BWP. The mechanisms for multiplexing S-SSB transmissions with PSCCH / PSSCH transmissions to satisfy the OCB are discussed in more detail herein.

[0069] Figure 2 An example of a wireless communication network 200 providing side-link communication according to embodiments of the present disclosure is shown. Network 200 may correspond to a portion of network 100. For ease of discussion, Figure 2One BS205 and five UE215s (shown as 215a, 215b, 215c, 215d, and 215e) are illustrated, but it will be appreciated that embodiments of this disclosure can be extended to any suitable number of UEs 215 (e.g., approximately 2, 3, 4, 5, 7, or more) and / or BS205 (e.g., approximately 2, 3, or more). The BS205 and UEs 215 can be similar to BS105 and UE 115, respectively. The BS205 and UEs 215 can share the same radio frequency band for communication. In some cases, the radio frequency band can be a 2.4 GHz unlicensed band, a 5 GHz unlicensed band, or a 6 GHz unlicensed band. Generally, the shared radio frequency band can be any suitable frequency.

[0070] In network 200, some of UEs 215 can communicate with each other in peer-to-peer communication. For example, UE 215a can communicate with UE 215b on sidelink 251, UE 215c can communicate with UE 215d on sidelink 252 and / or with UE 215e on sidelink 254, and UE 215d can communicate with UE 215e on sidelink 255. Sidelinks 251, 252, 254, and 255 are unicast bidirectional links. Some of UEs 215 can also communicate with BS 205 in the UL direction and / or DL ​​direction via communication link 253. For example, UEs 215a, 215b, and 215c are within the coverage area 210 of BS 205 and therefore can communicate with BS 205. UEs 215d and UE 215e are outside coverage area 210 and therefore may not communicate directly with BS205. In some cases, UE 215c may operate as a repeater for UE 215d to reach BS205. In some aspects, some of UEs 215 are associated with a vehicle (e.g., similar to UE115i-k), and communication on sidelinks 251 and / or 252 may be C-V2X communication. C-V2X communication can refer to communication between a vehicle and any other wireless communication device in the cellular network.

[0071] In some aspects, BS205 can configure sidelink UE 215 as a sidelink synchronization UE (e.g., UE 215c). When operating as a sidelink synchronization UE, UE 215 can broadcast an S-SSB, which may include synchronization signals (e.g., PSS and / or SSS) and sidelink system information, such as sidelink BWP configuration, one or more sidelink transmit resource pools and / or one or more sidelink receive resource pools, S-SSB transmission-related parameters (e.g., sidelink time slots and / or S-SSB transmission periods configured for S-SSB transmission) and / or any other configuration information related to sidelink communication, as will be discussed more fully below. Accordingly, other UEs near UE 215c but possibly outside the coverage of BS205 (e.g., UEs 215d and 215e) can listen to and synchronize with the S-SSB, and communicate with each other based on the S-SSB.

[0072] Figure 3 Radio frame structure 300 according to some aspects of this disclosure is illustrated. In networks such as network 100 and / or 200, BSs such as BS105 and 205 and UEs such as UE 115 and 215 can communicate using radio frame structure 300. Specifically, the BS can communicate with the UE using time-frequency resources configured as shown in radio frame structure 300. Figure 3 In this diagram, the x-axis represents time in some arbitrary unit, and the y-axis represents frequency in some arbitrary unit. The transmission frame structure 300 includes a radio frame 301. The duration of the radio frame 301 can vary depending on various factors. In one example, the radio frame 301 may have a duration of approximately ten milliseconds. The radio frame 301 includes a number of M time slots 302, where M can be any suitable positive integer. In one example, M may be approximately 10.

[0073] Each time slot 302 comprises several subcarriers 304 in frequency and several symbols 306 in time. The number of subcarriers 304 and / or symbols 306 in time slot 302 can vary depending on various factors (e.g., based on channel BW, subcarrier spacing (SCS), and / or CP mode). One subcarrier 304 in frequency and one symbol 306 in time form a resource element (RE) 312 for transmission. A resource block (RB) 310 is formed by several consecutive subcarriers 304 in frequency and several consecutive symbols 306 in time.

[0074] In one example, BS (e.g., Figure 1 BS105 or Figure 2 BS205 in the UE can schedule the UE at a time granularity of time slot 302 or micro-time slot 308 (e.g., Figure 1UE 115 or Figure 2 UE 215 performs UL and / or DL ​​communication. Each time slot 302 can be divided into a number of K micro-time slots 308 in time. Each micro-time slot 308 may include one or more symbols 306. The micro-time slots 308 in time slot 302 can have a variable length. For example, when time slot 302 includes a number of N symbols 306, the micro-time slot 308 can have a length between one symbol 306 and (N-1) symbols 306. In some aspects, the micro-time slot 308 can have a length of approximately two symbols 306, approximately four symbols 306, or approximately seven symbols 306. In some examples, the BS can schedule the UE at a frequency granularity of resource block (RB) 310 (e.g., including approximately 12 subcarriers 304).

[0075] Additionally, the BS can configure a sidelink resource pool, including sidelink resources, based on radio frame structure 300 for sidelink communication between sidelink UEs (e.g., UE 215). In some cases, the BS can use a frequency interleaving structure to configure the sidelink resource pool, where sidelink resources are defined in units of frequency interleavings, each frequency interleaving including RBs 310 distributed across the sidelink BWP. Alternatively, the BS can use a subchannel-based structure to configure the sidelink resource pool, where sidelink resources are defined in units of frequency subchannels, each frequency subchannel including consecutive RBs 310 in the sidelink BWP, as will be discussed more fully below.

[0076] Figure 4 (A), (B), and (C) illustrate various mechanisms for S-SSB transmissions related to SSB transmissions in NR-U. Figure 4 In (A), (B), and (C), the x-axis can represent time in some arbitrary units, and the y-axis can represent frequency in some arbitrary units.

[0077] Figure 4 Figure (A) illustrates an SSB transmission scheme 410 according to some aspects of this disclosure. In networks such as network 100 and / or 200, BSs such as BS105 and 205 and UEs such as UE 115 and 215 can use scheme 410 to communicate. Specifically, when operating on an unlicensed frequency band, the BS can use scheme 410 to broadcast an SSB. The BS can transmit the SSB in a radio frame having a structure similar to radio frame structure 300, and the same reference numerals can be used.

[0078] exist Figure 4In the example shown in (A), the BS (e.g., BS105 and / or 205) can be configured with a BWP 412 for communication with the UE in band 402. Band 402 can be at any suitable frequency (e.g., at approximately 2.4 GHz, 5 GHz, or 6 GHz). Band 402 can have any suitable BW. In some aspects, band 402 can be a 20 MHz band in unlicensed spectrum. For example, the BS can operate an NR-U network on a 20 MHz band. The BS can broadcast SSBs 414 and 416 in BWP 412 during time slot 302. Each of SSBs 414 and 416 can include a PSS, an SSS, and a PBCH signal carrying a MIB, as described above regarding Figure 1 As discussed, SSBs 414 and 416 can facilitate UE (e.g., UE 115 and / or 215) synchronization with the BS and network access. SSBs 414 and 416 can include substantially similar information. In some cases, the BS may transmit SSBs 414 and 416 in different beam directions. In some cases, the BS may transmit SSBs 414 and 416 according to the SSB transmission period (e.g., approximately 40ms, 80ms, or 160ms).

[0079] In some aspects, band 402 can be a 20MHz band and can be configured with an SCS of approximately 30kHz. Each of SSBs 414 and 416 can occupy BW 404, which includes approximately 20 RBs (e.g., RB 310). The BS can transmit SSBs 414 and 416 according to a synchronization grid 405 defined for NR-U operation, for example, centered on synchronization grid 405. In some aspects, the NR-U synchronization grid 405 can be defined such that SSBs 414 and 416 are aligned with the low-frequency edge 401 of BWP 412, wherein SSB 414 or 416 can have 10 RBs above and 10 RBs below synchronization grid 405. In some aspects, NR-U can define synchronization grid 405 in bands (e.g., at 20MHz intervals). In other words, synchronization grid 405 can have a 20MHz period in frequency. The BS can periodically send SSB 414 and / or 416. Therefore, UE 115 or UE 215 seeking network access can scan the frequency band to search for cells or BSs based on the synchronization grid 405.

[0080] As described above, BS205 can configure UE 215 (e.g., UE 215c) as a sidelink synchronization UE, or provide sidelink system information for other sidelink UEs 215 (which may be outside the coverage of BS105) to mutually transmit sidelink information. BS205 can configure UE 215 to operate at various frequencies, such as according to the NR-U synchronization grid (e.g., ...). Figure 4 (as shown in (B)) or according to a new synchronization grid defined for the side link (such as...) Figure 4 As shown in (C) in the figure, to send S-SSB.

[0081] Figure 4 (B) illustrates an S-SSB transmission scheme 420 according to some aspects of this disclosure. In networks such as network 100 and / or 200, BSs such as BS105 and 205 and UEs such as UE 115 and 215 can communicate using scheme 420. Specifically, as shown in scheme 420, the BS can configure the sidelink synchronizing UE 215 to transmit S-SSBs. Figure 4 In the example shown in (B), BS205 can configure UE 215 to operate on the sidelink (SL) BWP 422 in band 402. BS205 can also configure UE 215 to operate as a sidelink synchronized UE to broadcast S-SSBs 424 to facilitate other sidelink UEs 215 performing sidelink communication. BS205 can configure UE 215 to transmit S-SSBs 424 in time slot 302 according to the synchronization grid 405 defined by NR-U. Therefore, UE 215 can transmit S-SSBs 424 in the SL BWP 422 centered on the NR-U synchronization grid 405.

[0082] In some aspects, S-SSB 424 may include synchronization signals (e.g., PSS and / or SSS) and sidelink system information, such as sidelink BWP configuration, one or more sidelink transmit resource pools and / or one or more sidelink receive resource pools, S-SSB transmission-related parameters (e.g., sidelink time slots and / or S-SSB transmission periods configured for S-SSB transmission) and / or any other configuration information related to sidelink communication. In some examples, S-SSB 424 may include a Physical Sidelink Broadcast Channel (PSBCH) signal, which may carry a sidelink MIB including: Direct Frame Number (DFN), TDD configuration, time slot index, in-coverage indicator, and / or Cyclic Redundancy Check (CRC). In some aspects, S-SSB 424 may occupy a smaller frequency band (BW) than SSB 414 and 416. For example, S-SSB 424 may occupy approximately 11 RBs (e.g., RB 310) of BW 406 at an SCS of 30 kHz. Additionally, S-SSB 424 may occupy the entire duration of time slot 302. When S-SSB 424 is transmitted according to NR-U synchronization grid 405 (e.g., centered on synchronization grid 405), S-SSB 424 may have 5.5 RBs above and 5.5 RBs below NR-U synchronization grid 405. Therefore, there is a frequency offset 408 of approximately 4.5 RBs between the lowest frequency edge of S-SSB 424 and the low frequency edge 401 of SL BWP 422. In some aspects, BS 205 may indicate the frequency offset 408 for S-SSB 424 in the MIB, for example, by broadcasting a portion of SSB 414 or 416.

[0083] Figure 4(C) illustrates an S-SSB transmission scheme 430 according to some aspects of this disclosure. In networks such as network 100 and / or 200, BSs such as BS105 and 205 and UEs such as UE 115 and 215 can communicate using scheme 430. Specifically, as shown in scheme 430, the BS can configure the sidelink synchronization UE 215 to transmit S-SSBs. Similar to scheme 430, the BS205 can configure the sidelink synchronization UE 215 to operate on the sidelink (SL) BWP 422 in band 402. The BS205 can also configure UE 215 to operate as a sidelink synchronization UE to broadcast S-SSBs to facilitate other sidelink UEs 215 performing sidelink communication. However, in scheme 430, BS205 can be configured with a synchronization grid 407 different from NR-U synchronization grid 405, such that the S-SSB can be aligned with the low-frequency edge 401 of SL BWP 422. Synchronization grid 407 can be referred to as the sidelink synchronization grid. As shown, the sidelink synchronization UE 115 transmits an S-SSB 434 centered on synchronization grid 407, where S-SSB 434 is aligned with the low-frequency edge 401 of SL BWP 422. S-SSB 434 can be similar to S-SSB 424. For example, S-SSB 434 can also occupy the entire duration of frequency BW 406 and timeslot 302 for approximately 11 RBs, and can include elements as described above. Figure 4 Similar sidelink system information discussed in (B) of this paper.

[0084] As discussed above, to satisfy a certain OCB, for example, when operating on an unlicensed frequency band, sidelink communication can utilize frequency interleaved waveforms. Therefore, in some aspects, BS205 is based on... Figure 5 The frequency interleaving structure shown is used to configure the sidelink resource pool for sidelink communication between sidelink UEs 215.

[0085] Figure 5A sidelink resource allocation scheme 500 based on frequency-interleaved waveforms according to some aspects of this disclosure is illustrated. Scheme 500 can be adopted in networks such as network 100 and / or 200, BSs such as BS105 and 205, and UEs such as UE 115 and 215. Specifically, BS205 can configure sidelink UE 215 with sidelink resources in units of frequency interleaved waveforms to provide sidelink transmissions with frequency-interleaved waveforms satisfying the OCB in band 502, as shown in scheme 500. Band 502 can be located at any suitable frequency (e.g., approximately 3 GHz, 5 GHz, 6 GHz, or 60 GHz) and can have any suitable BW (e.g., approximately 10 MHz, 20 MHz). Band 502 can also be configured with any suitable SCS (e.g., approximately 15 kHz, 30 kHz, 60 Hz, 120 kHz, or 240 kHz). In some aspects, band 502 may be located at approximately 5 GHz or 6 GHz and may have a bandwidth of approximately 20 MHz, which is configured with a standard channel signal (SCS) of approximately 30 kHz.

[0086] As shown in the figure, frequency band 502 is divided into multiple frequency interleaving bodies 508, shown as 508. I(0) Up to 508 (M-1) Where M is a positive integer. Each frequency interleaving has 508... I(i) This can include K RB 510s (e.g., RB310) evenly spaced on frequency band 502, where K is a positive integer and i can vary between 0 and M-1. In other words, a specific frequency interleaving 508 I(i) RB 510 in the middle is separated from each other by at least one other RB 510. Frequency interlacing 508 is shown as a box in a filled pattern. I(0) Including cluster 504 C(0) Up to 504 C(K-1) The values ​​of RB 510, K, and M can vary based on several factors, such as the bandwidth of band 502, SCS, and / or PSD limitations, as described in more detail below.

[0087] M localized RBs 510 form a cluster 504. As shown in the figure, the frequency interleaving body 508... I(0) Up to 508 (M-1) Form K clusters 504 C(0) Up to 504 C(K-1) Each RB 510 can span approximately 12 consecutive subcarriers 512 and a time period 514 on the frequency band, the time period 514 of which can correspond to, for example, Figure 3The time slot 302 is shown. Subcarriers 512 are indexed from 0 to 11. Subcarriers 512 are also referred to as resource elements (REs). Time slot 514 can span any appropriate number of OFDM symbols 506. In some aspects, time slot 514 can correspond to a transmission time interval (TTI), which can include approximately fourteen OFDM symbols 506.

[0088] The number of clusters 504, or the value of K, can depend on the amount of frequency distribution required to maintain a certain BW occupancy. As an example, scheme 500 may divide band 502 into approximately ten clusters 504 (e.g., K = 10) and distribute the frequency across the ten clusters 504 to increase the allocated frequency occupancy. In one aspect, band 502 may have a bandwidth of approximately 20 MHz, and each subcarrier 512 may span approximately 15 kHz in frequency. In such an aspect, band 502 may include approximately ten frequency interleavings 508 (e.g., M = 10). For example, the allocation may include a frequency interleaving 508 with ten distributed or equally spaced RBs 510. An interleaving allocation with ten distributed RBs 510 allows the UE to transmit with a higher BW occupancy compared to an allocation with a single RB or ten localized RBs.

[0089] In another aspect, band 502 may have a bandwidth of approximately 10 MHz, and each subcarrier 512 may span approximately 15 kHz in frequency. In such an aspect, band 502 may include approximately five frequency interleavings 508 (e.g., M = 5). Similarly, the allocation may include a frequency interleaving 508 with ten distributed RBs 510. An interleaving allocation with ten distributed RBs can allow for a wider BW occupancy compared to an allocation with a single RB or ten localized RBs.

[0090] In another aspect, band 502 may have a bandwidth of approximately 20 MHz, and each subcarrier 512 may span approximately 30 kHz in frequency (e.g., a 30 kHz SCS). In such an aspect, band 502 may include approximately five frequency interleavings 508 (e.g., M = 5). Similarly, the allocation may include a frequency interleaving 508 with ten distributed RBs 510. An interleaving allocation with ten distributed RBs can allow for a wider BW occupancy compared to an allocation with a single RB or ten localized RBs.

[0091] In some aspects, RB 510 is a physical resource block (PRB), and each frequency interleaving 508 may include PRBs that are evenly spaced in the frequency band 502.

[0092] In scheme 500, the transmitting side-link UE 215 (e.g., Figure 2 UE 215c) can select one or more frequency interleaving elements 508 for use with the other side of the line link UE 215 (e.g., Figure 2 Sidelink communication of UE 215d). As an example, the transmitting sidelink UE 215 selects frequency interleaving 508 as shown in the pattern box. I(0) This is used for sidelink communication with UE 215d. In some other examples, the transmitting sidelink UE 215 can select different frequency interleaving 508. I(m) (where m can be between 1 and M-1) for side link communication. Alternatively, the transmitting side link UE 215 can use any appropriate number of frequency interleavings 508 for side link communication, for example, between 1 and M frequency interleavings 508.

[0093] Frequency interlacing 508 I(0) Sidelink communication can include sidelink data and SCI. Sidelink data can be transmitted via PSSCH. SCI can be transmitted via PSCCH. SCI can carry information or parameters related to the transmission of PSSCH. In some aspects, FDM can be used in frequency interleaving 508. I(0) The PSCCH and PSSCH are multiplexed internally. For example, the PSCCH can occupy frequency interleaving 508. I(0) The lowest frequency RB 510 and the highest frequency RB 510, and PSSCH can occupy frequency interleaving 508. I(0) The remaining RB 510, as will be in the following Figure 6 and 8 This will be discussed more comprehensively in the following section. In some other aspects, TDM can be used in frequency interleaving bodies 508. I(0) The PSCCH and PSSCH are multiplexed internally. For example, the PSCCH and PSSCH are interleaved in frequency interleaving 508. I(0) Each RB 510 is mapped to a different time period, as will be shown below. Figure 7 and 9 A more comprehensive discussion is needed.

[0094] Figure 6-9 Various mechanisms are illustrated for multiplexing S-SSB transmissions, such as those shown in schemes 420 and 430, with PSCCH / PSSCH transmissions using frequency interleaving, such as those shown in scheme 500, to meet the OCB requirements of the frequency band. In a network such as network 100, sidelink UEs such as UE 115 and / or 215 can respectively employ... Figure 6 , 7Schemes 600, 700, 800, and 900 in 8 and 9 are used to multiplex S-SSB transmissions with PSCCH / PSSCH transmissions, for example, to meet the OCB requirements of the frequency band. Figure 6-9 This is illustrated using the frequency interleaving side link resource structure shown in S-SSB transmission schemes 420 and / or 430 and scheme 500, and can be used with... Figure 4 The same reference numerals are used in (B), (C), and 5. Additionally, the x-axis represents time in some arbitrary unit, and the y-axis represents frequency in some arbitrary unit. Furthermore, for clarity, Figure 6-9 The S-SSB transmission and PSCCH / PSSCH transmission multiplexed in the time slot by the side-link synchronized UE are shown in the separate illustrations.

[0095] Figure 6 An S-SSB and PSCCH / PSSCH multiplexing scheme 600 according to some aspects of this disclosure is illustrated. In scheme 600, BS 205 can configure SL BWP 422 on frequency band 502. BS 205 can configure a sidelink resource pool in SL BWP 422. The sidelink resource pool can include multiple time slots 514 in time and multiple frequency interleavings 508 in frequency band 502. Time slots 514 can be referred to as sidelink time slots. BS 205 can configure some time slots 514 for S-SSB transmission, for example, with periods of approximately 40ms, 80ms, 160ms, 240ms, or any suitable period. BS 205 can configure the sidelink synchronization UE 215 to, for example, use... Figure 4 Scheme 420 shown in (B) transmits S-SSB 424 in time slot 514a according to NR-U synchronization grid 405 as shown in part 601.

[0096] To meet the OCB requirements of band 502, the sidelink synchronization UE 215 can transmit sidelink transmissions (including PSCCH transmission 610 and PSSCH transmission 620) simultaneously with S-SSB 424 transmissions in frequency interleaving 508 during sidelink time slot 514a by multiplexing sidelink transmissions with S-SSB 424 transmissions (as shown in section 602). For simplicity, Figure 6 An example of a frequency band 502 with a 20 MHz band width (with an SCS of approximately 30 kHz) is shown. Additionally, frequency band 502 is configured with 10 clusters 504 (e.g., K = 10) having five interleavers 508. Therefore, each frequency interleaver 508 can include ten RBs (e.g., RB 510). However, scheme 600 can be applied to frequency interleavers with any suitable number of RBs 510 and / or any SCS. Frequency interleaver 508I(4) RB in the diagram is shown as RB(0) to RB(9).

[0097] exist Figure 6 In the example shown, the side-link synchronization UE 215 is in frequency interleaving 508 I(4) The system transmits sidelink transmissions including PSCCH transmission 610 and PSSCH transmission 620. It should be understood that in other examples, the sidelink synchronization UE 215 can be in another frequency interleaving 508 (e.g., frequency interleaving 508). I(1) Frequency interlacing 508 I(2) and / or frequency interlacing 508 I(3) In scheme 600, the side-link synchronization UE 215 multiplexes PSCCH transmission 610 and PSSCH transmission 620 on the frequency. As shown in the figure, PSCCH transmission 610 occupies frequency interleaving 508. I(4) The edges (e.g., at the highest frequency RB(0) and the lowest frequency RB(9)), and PSSCH transmission 620 occupy frequency interleaving 508 I(4) The remaining RBs (e.g., RB(1) to RB(8)). PSSCH transmission 620 may include, for example, sideline data for another sideline UE (e.g., UE 115 and / or 215), and PSSCH transmission 610 may include an SCI associated with the transmission of the sideline data. In some cases, the SCI may carry reservation and / or scheduling information for PSSCH transmission 620.

[0098] As discussed above, the S-SSB 424 transmission can occupy approximately eleven RBs 510, offset by 4.5 RBs 510 from the low-frequency edge 401 of the SL BWP 422. This is when five frequency interleavings 508 are present in the SL BWP 422. I(0) Up to 508 I(4) When ), frequency interleaving 508 I(0) Up to 508 I(4) The highest frequency RB 510 (in cluster 504) C(0) (in the middle) and the lowest frequency RB 510 (in cluster 504) C(9) The frequency interleaving (IF) can be used without overlapping with the frequency resources used by S-SSB 424. Therefore, the side-link synchronization UE 215 can select frequency interleaving 508. I(0) Up to 508 I(4) Any one of the frequency interleavings is used for transmission without collision handling for PSCCH transmission (e.g., PSCCH transmission 610). However, frequency interleaving 508I(0) The lowest frequency RB 510 can overlap with the frequency resources used by S-SSB 424 transmission. In some respects, the side-link synchronization UE 215 can avoid selecting frequency interleaving 508. I(0) Used for multiplexing with S-SSB 424 transmissions. Therefore, the sidelink synchronization UE 215 can select a frequency interleaving 508 from multiple frequency interleavings 508 in SL BWP 422 for transmitting sidelink transmissions (including PSCCH transmission 610 and PSSCH transmission 620) based on the fact that the lowest frequency RB 510 of the selected frequency interleaving 508 does not overlap with the frequency resources used for S-SSB 424 transmissions.

[0099] Since the S-SSB 424 transmission occupies eleven RBs 510, it may conflict with the PSSCH transmission 620 in each frequency interleaving 508. In other words, regardless of which frequency interleaving 508 the sidelink synchronization UE 215 selects, a conflict will exist between the PSSCH transmission 620 and the S-SSB 424 transmission. When the SCS is 30kHz, the conflict may occur in approximately 2-3 RBs 510 for any frequency interleaving in frequency interleaving 508. When the SCS is 15kHz, the conflict may occur in approximately 1-2 RBs 510 for any frequency interleaving in frequency interleaving 508. As shown in dashed box 606, frequency interleaving 508... I(4) A portion of the PSSCH transmission 620 overlaps with the frequency resources used by the S-SSB 424 transmission. To avoid conflicts with the S-SSB 424 transmission, the sidelink synchronization UE 215 may puncture the PSSCH transmission 620 at RB 510, which at least partially overlaps with the frequency resources used by the S-SSB 424 transmission. For example, the sidelink synchronization UE 215 may perform puncturing by dropping the transmission of the PSSCH transmission 620 at RB 510, which at least partially overlaps with the frequency resources used by the S-SSB 424 transmission.

[0100] Alternatively, the sidelink synchronizing UE 215 may rate match the PSSCH transmission 620 around RB 510, which at least partially overlaps with the frequency resources used by the S-SSB 424 transmission. For example, the sidelink synchronizing UE 215 may rate match the PSSCH transmission 620 by adjusting or extracting a number of encoded bits that match the number of bits that can be carried by the PSSCH transmission 620 (excluding RB 510, which at least partially overlaps with the S-SSB 424 transmission). When the sidelink synchronizing UE 215 of the PSSCH transmission 620 and the receiving sidelink UE (e.g., UE 115 and / or 215) are within the coverage of BS 205, the receiving sidelink UE can be aware of the S-SSB 424 transmission in time slot 514a and can therefore perform PSSCH decoding based on the rate matching around RB 510, which at least partially overlaps with the S-SSB 424 transmission. However, in some cases, the receiving-side traversal UE may not have complete knowledge of the S-SSB transmission mode and therefore may not be aware that time slot 514a is configured for S-SSB transmission. For example, the receiving-side traversal UE may be configured with different S-SSB transmission parameters than the traversal synchronization UE 215. For example, the traversal synchronization UE 215 and the receiving-side traversal UE may be configured with different sl-NumSSB-WithinPeriod parameters, which indicate different numbers of S-SSBs within a time period. In some aspects, the traversal UE (e.g., the traversal synchronization UE 215 and / or the receiving-side traversal UE) may receive the sl-NumSSB-WithinPeriod parameter via RRC configuration from the BS (e.g., when within the coverage of the BS). In some other aspects, the sidelink UE (e.g., sidelink synchronization UE 215 and / or receiving sidelink UE) may be pre-configured (e.g., by the UE manufacturer during manufacturing) with a default profile including the sl-NumSSB-WithinPeriod parameter. When the receiving sidelink UE is unaware of the S-SSB transmission in time slot 514a, it may not decode the PSSCH transmission 620 based on rate matching, which could lead to PSSCH decoding failure. To assist the receiving sidelink UE in performing rate matching for PSSCH decoding, the sidelink synchronization UE 215 may include rate matching information in the SCI transmitted in PSCCH transmission 610. For example, the SCI (e.g., a phase one SCI) may include indications to apply rate matching to PSSCH transmission 620 and / or RB510 if rate matching is applied.

[0101] Figure 7S-SSB and PSCCH / PSSCH multiplexing scheme 700 according to some aspects of this disclosure is shown. Scheme 700 is substantially similar to scheme 600. For example, BS205 can, for example, use scheme 420 to configure the sidelink synchronization UE 215 to transmit S-SSB 424 in time slot 514a according to NR-U synchronization grid 405 as shown in shown portion 701. Furthermore, the sidelink synchronization UE 215 can transmit sidelink transmissions (including PSCCH transmission 610 and PSSCH transmission 620) simultaneously with the S-SSB 424 transmission in frequency interleaving 508 during sidelink time slot 514a to meet the OCB requirements of frequency band 502. However, in scheme 700, the sidelink synchronization UE 215 can multiplex PSCCH transmission 610 and PSSCH transmission 620 in time (instead of in frequency as in scheme 600). As shown in section 702, the sidelink synchronization UE 215 transmits PSCCH transmission 610 during the initial time period 703 of time slot 514a, and transmits PSSCH transmission 620 during the subsequent time period 704 of time slot 514a. Time periods 703 and 704 can be consecutive time periods; for example, there may be no gap between time periods 703 and 704.

[0102] Because PSCCH transmission 610 and PSSCH transmission 620 are time-multiplexed in each RB 510 of frequency interleaving 508, PSCCH transmission 610 and PSSCH transmission 620 in any frequency interleaving 508 in the resource pool will conflict with S-SSB 424 transmission in time slot 514a. When the SCS is 30kHz, the conflict may occur in approximately 2-3 RBs 510 for any frequency interleaving in frequency interleaving 508. When the SCS is 15kHz, the conflict may occur in approximately 1-2 RBs 510 for any frequency interleaving in frequency interleaving 508. As shown in dashed box 706, frequency interleaving 508 I(4) A portion of the PSCCH transmission 610 and PSSCH transmission 620 overlaps with the frequency resources used by the S-SSB 424 transmission.

[0103] To avoid conflicts between PSCCH transmission 610 and S-SSB 424 transmission, the sideline synchronizing UE 215 may puncture PSCCH transmission 610 at RB 510, which at least partially overlaps with the frequency resources used by S-SSB 424 transmission. Alternatively, the sideline synchronizing UE 215 may rate match PSCCH transmission 610 around RB 510, which at least partially overlaps with the frequency resources used by S-SSB 424 transmission. In some cases, the receiving sideline UE of PSCCH transmission 610 (e.g., UE 115 and / or 215) may not have complete knowledge of the S-SSB transmission mode and therefore may not be aware that time slot 514a is configured for S-SSB transmission. Therefore, when rate matching is applied to PSCCH transmission 610, the receiving sideline UE may fail to decode PSCCH transmission 610. In some respects, BS205 can avoid scheduling PSCCH transmissions 610 in control channel elements (CCEs) that overlap with frequency resources used by S-SSB 424 transmissions. A CCE can be the smallest hourly frequency resource unit used to define control channel resources. A CCE can include a group of six resource elements (REGs), where a REG is defined on a physical RB within a symbol. SCIs can be transmitted in aggregations of four, eight, or sixteen CCEs.

[0104] To avoid conflicts between PSSCH transmission 620 and S-SSB 424 transmissions, the sidelink synchronization UE 215 can perform the same operation as described above on PSSCH transmission 620. Figure 6 Similar puncturing or rate matching is discussed in scheme 600. Additionally, if the side-link synchronization UE 215 applies rate matching to the PSSCH transmission 620, the side-link synchronization UE 215 can also include rate matching operation information in the corresponding PSCCH transmission 610 (e.g., in the SCI) to assist the receiving side-link UE in performing the PSSCH rate matching as discussed above, as referred to above. Figure 6 This is discussed in Scheme 600.

[0105] Figure 8 S-SSB and PSCCH / PSSCH multiplexing scheme 800 according to some aspects of this disclosure is shown. Scheme 800 is substantially similar to scheme 600 and is described using the same frequency interleaving structure side link resources as in scheme 600. For example, BS205 can be configured with a side link resource pool similar to that in scheme 600, which includes multiple time slots 514 in time and multiple frequency interleavings 508 in SL BWP 422 within frequency band 502 (for frequency-multiplexed PSCCH and PSSCH transmission). However, BS205 can, for example, use Figure 4 In scheme 430 shown in (C), the sidelink synchronization UE 215 is configured to transmit S-SSB 434 in time slot 514a according to the NR-U synchronization grid 407 shown in section 801. To meet the OCB requirements of band 502, the sidelink synchronization UE 215 can also transmit sidelink transmissions simultaneously with the S-SSB 434 transmission in sidelink time slot 514a in frequency interleaving 508.

[0106] Since the sidelink synchronization UE 215 can transmit S-SSB434 aligned with the low-frequency edge 401 of SL BWP 422, and S-SSB 434 occupies 11 RBs 510, S-SSB 434 transmission may conflict with the lowest frequency RB 510 (e.g., RB(9)) of each frequency interleaving 508. As stated above Figure 6 As discussed, for frequency-multiplexed PSCCH and PSSCH transmissions, PSCCH transmissions are mapped to the lowest and highest frequency RBs of frequency interleaving 508. Therefore, PSCCH transmissions in any frequency interleaving within frequency interleaving 508 may conflict with S-SSB 434 transmissions. To avoid impacting PSCCH transmission performance, the sidelink synchronization UE 215 can adjust the resource mapping for PSCCH to the next cluster 504 that does not overlap with S-SSB 434 transmissions. In some aspects, the sidelink synchronization UE 215 can remap PSCCH and PSSCH to frequency interleaving 508. I(4) Instead of mapping PSCCH and PSSCH to the entire interleaving (e.g., a portion of the interleaving), 508 I(4) For example, frequency interleaving 508 I(4) Frequency band 502 includes multiple RBs 510 spaced apart from each other by another RB 510. The side-link synchronization UE 215 can determine the frequency interleaving 508. I(4) A subset of multiple RBs 510 that do not overlap with the frequency resources used by the S-SSB 434 transmission (e.g., RB(0) to RB(6) shown by reference numeral 804). The side-link synchronization UE 215 may transmit PSCCH transmission 610 at the lowest frequency RB 510 (e.g., RB(6)) and the highest frequency RB 510 (e.g., RB(0)) in the subset of multiple RBs 804, and transmit PSSCH transmission 620 in the remaining RBs 510 of the subset of multiple RBs 510, as shown in section 802.

[0107] The receiving-side roving UE (e.g., UE 115 and / or 215) of PSSCH transmission 620 may or may not know whether roving slot 514a is configured for S-SSB transmission. If the receiving-side roving UE knows that S-SSB transmission is configured for roving slot 514a, the receiving-side roving UE can monitor the SCI based on the remapped PSCCH in the lowest frequency RB 510 and the highest frequency RB 510 in a subset 804 of multiple RBs 510. If the receiving-side traversal UE does not have complete knowledge of the S-SSB transmission configured for traversal slot 514a, the receiving-side traversal UE can monitor the SCI in traversal slot 514a by performing SCI decoding in the lowest frequency RB 510 (e.g., RB(0)) and the highest frequency RB 510 (e.g., RB(6)) of a subset 804 of multiple RBs 510 (e.g., partial frequency interleavings), and in the lowest frequency RB 510 (e.g., RB(0)) and the highest frequency RB 510 (e.g., RB(9)) of a subset 804 of multiple RBs 510 (e.g., the entire frequency interleaving). In other words, the receiving-side traversal UE can perform additional SCI decoding in each slot 514 based on the resource mapping for partial frequency interleavings, even if partial frequency interleaving configurations may occasionally occur based on the S-SSB 434 transmission cycle.

[0108] Figure 9 S-SSB and PSCCH / PSSCH multiplexing scheme 900 according to some aspects of this disclosure is shown. Scheme 900 is substantially similar to scheme 700; for example, BS205 can be configured with a side link resource pool similar to that in scheme 700, which includes multiple time slots 514 in time and multiple frequency interleavings 508 in SL BWP 422 within frequency band 502 (for time-multiplexed PSCCH and PSSCH transmission). However, BS205 can, for example, use Figure 4 In scheme 430 (C) shown in section 901, the sidelink synchronization UE 215 is configured to transmit S-SSB 434 in time slot 514a according to the NR-U synchronization grid 407 as shown in section 901. To meet the OCB requirements of band 502, the sidelink synchronization UE 215 can also transmit sidelink transmissions simultaneously with the S-SSB 434 transmissions in sidelink time slot 514a in frequency interleaving 508. Similar to scheme 700, the sidelink synchronization UE 215 transmits PSCCH transmission 610 during the initial time period 703 of time slot 514a and PSSCH transmission 620 during the subsequent time period 704 of time slot 514a, as shown in section 902.

[0109] Because PSCCH transmission 610 and PSSCH transmission 620 are time-multiplexed in each RB 510 of frequency interleaving 508, PSCCH transmission 610 and PSSCH transmission 620 in any frequency interleaving 508 in the resource pool may conflict with S-SSB 424 transmission in time slot 514a, regardless of which frequency interleaving UE 215 selects for sidelink synchronization. When the SCS is 30kHz, the conflict may occur in approximately 2-3 RBs 510 for any frequency interleaving in frequency interleaving 508. When the SCS is 15kHz, the conflict may occur in approximately 1-2 RBs 510 for any frequency interleaving in frequency interleaving 508. As shown in dashed box 906, frequency interleaving 508... I(4) The PSCCH transmission 610 and PSSCH transmission 620 overlap with the frequency resources used by the S-SSB 434 transmission.

[0110] To avoid conflicts with S-SSB 434 transmissions, the sidelink synchronization UE 215 can perform puncturing or rate matching on PSCCH transmission 610 and / or PSSCH transmission 620, as described above. Figure 7 As discussed in scheme 700. In some respects, BS205 can avoid scheduling PSCCH transmission 610 in CCEs that overlap with frequency resources used by S-SSB 434 transmissions, as discussed above.

[0111] In some respects, conventional or subchannel-based PSCCH / PSSCH transmissions occupying consecutive RBs (e.g., RBs 310 and 510) may have better compatibility with S-SSB transmissions. For example, the sidelink synchronization UE 215 can select subchannels that do not overlap with frequency resources used for S-SSB transmissions without having to apply puncturing or rate matching to PSCCH and / or PSSCH transmissions in frequency-interleaved waveform PSCCH / PSSCH transmissions. Therefore, the BS205 can configure different resource pools for different sidelink time slots. For example, the BS205 can configure frequency-interleaved resource pools for sidelink time slots not associated with S-SSB transmissions and subchannel-based resource pools for sidelink time slots associated with S-SSB transmissions, as described below. Figure 10 This was discussed in the article.

[0112] Figure 10 An S-SSB and PSCCH / PSSCH multiplexing scheme 1000 according to some aspects of this disclosure is illustrated. In a network such as network 100, sidelink UEs such as UE 115 and / or 215 can employ scheme 1000 to multiplex S-SSB transmissions with PSCCH / PSSCH transmissions, for example, to meet the OCB requirements of the frequency band. Figure 10 In this diagram, the x-axis represents time in some arbitrary units, and the y-axis represents frequency in some arbitrary units. Scheme 1000 is described using the same frequency interleaving resource structure as Scheme 500, and for simplicity, it can be described using the same... Figure 5 The same reference numerals are used in the accompanying drawings.

[0113] In scheme 1000, BS205 can configure resource pool 1010 and resource pool 1020 in SL BWP 422 on frequency band 502. BS205 can configure resource pool 1010 with a frequency interleaving structure for time slot 514c, which is not configured for S-SSB transmission. Although Figure 10 One time slot 514c in resource pool 1010 is shown, but it should be understood that resource pool 1010 may include more time slots 514c (e.g., 2, 3, 4, 5 or more). Resource pool 1010 may include multiple frequency interleavings 508, wherein each frequency interleaving 508 may carry PSCCH transmission 610 and PSSCH transmission 620. Although Figure 10 The diagram illustrates PSCCH transmission 610 and PSSCH transmission 620 multiplexed in frequency within the frequency interleaving 508. However, it should be understood that in other examples, PSCCH transmission 610 and PSSCH transmission 620 can be multiplexed in time within the frequency interleaving 508, as described above regarding... Figure 7 and 9 Cases 700 and 900 are under discussion.

[0114] BS205 can configure a resource pool 1020 with a sub-channel-based structure for time slot 514d, which is configured for S-SSB transmission. Although Figure 10 One time slot 514d in resource pool 1020 is shown; however, it should be understood that resource pool 1020 may include many more time slots 514d (e.g., 2, 3, 4, 5 or more). Time slot 514d may have a period corresponding to the S-SSB transmission period (e.g., repeating at approximately every 40ms, 80ms or 160ms). Resource pool 1020 may include multiple frequency sub-channels 1022 (e.g., consecutive RBs 510), wherein each sub-channel 1022 may carry PSCCH transmission 610 and PSSCH transmission 620 as shown in extended illustrated portion 1002. Although Figure 10 The PSCCH transmission 610 and PSSCH transmission 620 are shown to be multiplexed in time within subchannel 1022. However, it should be understood that in other examples, PSCCH transmission 610 and PSSCH transmission 620 may be multiplexed in time and / or frequency within subchannel 1022.

[0115] The sidelink synchronization UE 215 can switch between two resource pools 1010 and 1020 for sidelink communication based on whether a time slot is configured for S-SSB transmission. For example, at block 1030, the sidelink synchronization UE 215 determines whether a sidelink time slot is configured for S-SSB transmission (e.g., S-SSB 424 or 434). If a sidelink time slot is not configured for S-SSB transmission, the sidelink synchronization UE 215 can select frequency interleaving 508 from resource pool 1010 (e.g., frequency interleaving 508). I(4) As indicated by arrow 1004, PSCCH transmission 610 and PSSCH transmission 620 are transmitted in the selected frequency interleaving 508.

[0116] However, if the sidelink synchronization UE 215 determines that the sidelink time slot is configured for S-SSB transmission, the sidelink synchronization UE 215 can utilize resource pool 1020, as indicated by arrow 1006. The sidelink synchronization UE 215 can transmit S-SSB 434 according to the sidelink synchronization grid 407 in time slot 514d. To meet the OCB requirement 1008 of band 502, the sidelink synchronization UE 215 can select a frequency subchannel 1022 in the higher frequency portion of SL BWP 422 and transmit PSCCH transmission 610 and PSSCH transmission 620 in the selected frequency subchannel 1022. For example, in the 5 GHz unlicensed band, ETSI requires an OCB of at least 70%.

[0117] In some aspects, the BS205 can be configured with a resource pool 1020 having sub-channels 1022 (shown as sub-channels #3, #2, #1, and #0) at the highest frequency portion of the SL BWP 422, which guarantees the OCB requirement 1008. For example, the sidelink synchronization UE 215 can select any of the four sub-channels 1022 to multiplex the PSCCH transmission 610 and PSSCH transmission 620 with the S-SSB 434 transmission.

[0118] In some other aspects, the BS205 can configure a resource pool 1020 with multiple sub-channels 1022, regardless of any OCB requirements of band 502. Therefore, the sidelink synchronization UE 215 can select a frequency sub-channel 1022 from the multiple sub-channels 1022 by taking into account the OCB requirement 1008. For example, when selecting a frequency channel 1022 for multiplexing PSCCH transmission 610 and PSSCH transmission 620 with S-SSB transmission, the sidelink synchronization UE 215 can give higher priority to the frequency sub-channel 1022 at a higher frequency to meet the OCB requirement 1008. For example, for selection, frequency sub-channel #3 1022 may have a higher priority than frequency sub-channel #2 1022.

[0119] In some aspects, when the monitoring-side traversal UE (e.g., UE 115 and / or 215) knows that slot 514d is configured for S-SSB434 transmission, the monitoring-side traversal UE can determine whether to monitor resource pool 1010 or resource pool 1020 for SCI decoding based on whether the traversal slot is configured for S-SSB transmission. For example, if the traversal slot (e.g., slot 514d) is configured for S-SSB transmission, the monitoring-side traversal UE can decode the SCI in resource pool 1020. However, if the traversal slot (e.g., slot 514c) is not configured for S-SSB transmission, the monitoring-side traversal UE can decode the SCI in resource pool 1010. In some cases, the monitoring-side traversal UE may not have complete knowledge of the S-SSB transmission configuration and therefore may perform SCI decoding in both resource pool 1010 and resource pool 1020 for each traversal slot.

[0120] Figure 11 S-SSB and PSCCH / PSSCH multiplexing scheme 1100 according to some aspects of this disclosure is illustrated. In a network such as network 100, sidelink UEs such as UE 115 and / or 215 can employ scheme 1100 to multiplex S-SSB transmissions with PSCCH / PSSCH transmissions, for example, to meet the OCB requirements of the frequency band. Figure 11 In this diagram, the x-axis represents time in some arbitrary units, and the y-axis represents frequency in some arbitrary units. Scheme 1100 is described using the same frequency interleaving resource structure as Scheme 500, and for simplicity, it can be described using the same... Figure 5The same reference numerals are used in the accompanying drawings. Scheme 1100 is substantially similar to Scheme 1000. For example, BS205 can configure a resource pool 1010 with a frequency interleaving structure in SL BWP 422 for a side link time slot 514c that is not configured for S-SSB transmission, and configure another resource pool 1120 in SL BWP 422 for a side link time slot 514d that is configured for S-SSB transmission, according to a sub-channel-based structure. However, the sub-channel-based resource pool 1120 includes a single sub-channel on the upper edge of SL BWP 422, instead of multiple sub-channels 1022 as in Scheme 1000.

[0121] Similar to scheme 1000, the sidelink synchronization UE 215 can switch between two resource pools 1010 and 1020 used for sidelink communication, depending on whether the time slot is configured for S-SSB transmission. When the sidelink synchronization UE 215 transmits S-SSB 434 in sidelink time slot 514d, the sidelink synchronization UE 215 can simultaneously transmit PSCCH transmission 610 and PSSCH transmission 620 in subchannel 1102 along with S-SSB 434, so as to meet the OCB requirements of band 502.

[0122] Similar to scheme 1000, a monitoring sideline UE (e.g., UE 115 and / or 215) that knows it is configured for S-SSB transmission in sideline time slot 514d can monitor SCI in resource pool 1120 during sideline time slot 514d, and can monitor SCI in resource pool 1010 in other sideline time slots 514c that are not configured for S-SSB transmission. On the other hand, a monitoring sideline UE that may not know which sideline time slots are configured for S-SSB transmission can monitor SCI in resource pools 1010 and 1120, for example, by performing blind SCI decoding in both resource pools 1010 and 1120.

[0123] Although using Figure 4 The S-SSB transmission scheme 430 in (C) is used to illustrate schemes 1000 and 1110, but schemes 1000 and 1110 can be combined with... Figure 4 The S-SSB transmission scheme 420 in (B) is applied together. In some aspects, the BS205 can determine the maximum number of sidelink resource pools (e.g., pools 1010, 1020, and 1120) based on the UE's capabilities. For example, the BS205 can determine whether to configure separate resource pools for sidelink time slot 514c (not configured for S-SSB transmission) and sidelink time slot 514d (configured for S-SSB transmission) based on the capabilities of sidelink synchronization UE 215 and / or other sidelink UE 215 that can utilize the sidelink resource pools.

[0124] In some aspects, the sidelink synchronization UE 215 may not have sidelink data transmitted in the same sidelink time slot in which it transmits S-SSB. To meet OCB requirements, the sidelink synchronization UE 215 may, for example, use frequency interleaving 508 in the PSSCH of frequency interleaving 508 to transmit CS-RS with frequency interleaved waveforms, as follows: Figure 12 As shown.

[0125] Figure 12 S-SSB and PSCCH / PSSCH multiplexing scheme 1200 according to some aspects of this disclosure is illustrated. In a network such as network 100, sidelink UEs such as UE 115 and / or 215 can employ scheme 1200 to multiplex S-SSB transmissions with PSCCH / PSSCH transmissions, for example, to meet the OCB requirements of the frequency band. Figure 12 In this diagram, the x-axis represents time in some arbitrary units, and the y-axis represents frequency in some arbitrary units. Scheme 1200 is described using the same frequency interleaving resource structure as Scheme 500, and for simplicity, it can be described using the same... Figure 5 The same reference numerals are used in the accompanying drawings. Scheme 1200 is substantially similar to Scheme 600. For example, the side link synchronization UE 215 transmits S-SSB 424 in SL BWP422 on frequency band 502 according to NR-U synchronization grid 405, as shown in section 1201.

[0126] To meet the OCB requirements of band 502, the side link synchronization UE 215 uses frequency interleaving 508 (e.g., in frequency interleaving 508I). I(4)The PSCCH transmission 610 and CSI-RS 1230 are transmitted simultaneously with the S-SSB 434 transmission. For clarity, the CSI-RS 1230 transmission is shown in separate illustration section 1202. CSI-RS 1230 may include a set of pilot symbols carried in the PSCCH transmission 620. Each pilot symbol may occupy one RE (e.g., RE 312) and may be distributed in time and frequency. The time and / or frequency density of the pilot symbols may be configured according to a certain channel condition and / or a certain performance objective. For example, when operating under high Doppler conditions, pilot symbols with a higher time density may allow for more accurate channel estimation at the receiving-side walkway UE. On the other hand, when operating under channel delay spread, pilot symbols with a higher frequency density may allow for more accurate channel estimation at the receiving-side walkway UE. For example, in some examples, CSI-RS 1230 may include pilot symbols in adjacent or consecutive OFDM symbols (e.g., symbol 306). In some other examples, the CSR-RS1230 may include pilot symbols in distributed OFDM symbols (e.g., in OFDM symbols spaced apart from each other by one or more other OFDM symbols).

[0127] To avoid conflicts with S-SSB 434 transmissions, the sidelink synchronization UE 215 may punch CSI-RS1230 at a RE (e.g., as shown in dashed box 1206) that overlaps with the frequency resources used by the S-SSB 434 transmission. In some aspects, the receiving-side link UE (e.g., UE 115 and / or 215) that knows the time slot 514d configured for S-SSB 434 transmissions can know where CSI-RS1230 is punched. In some aspects, the sidelink synchronization UE 215 may include CSI-RS triggering in an SCI (e.g., a Phase 1 SCI) carried by PSCCH transmission 610. Therefore, the receiving-side link UE can also infer that PSCCH transmission 620 carries CSI-RS1230 having an RE punched at a location corresponding to the frequency resources used by the S-SSB 434 transmission.

[0128] In some respects, when PSSCH transmission 620 and PSCCH transmission 610 are multiplexed with S-SSB 434 transmission, the sidelink synchronization UE 215 can transmit sidelink data together with CSI-RS1230 in PSSCH transmission 620.

[0129] Although using Figure 4 S-SSB transmission scheme 430 in (C) shows scheme 1200, but schemes 1200 and 1110 can be combined with... Figure 4The S-SSB transmission scheme 420 in (B) is used together.

[0130] Figure 13 This is a block diagram of an exemplary BS1300 based on some aspects of this disclosure. The BS1300 can be as described above... Figure 1 The network 100 discussed herein includes BS105. As shown, BS1300 may include a processor 1302, a memory 1304, a sidelink configuration module 1308, a transceiver 1310 including a modem subsystem 1312 and an RF unit 1314, and one or more antennas 1316. These elements may communicate with each other directly or indirectly, for example, via one or more buses.

[0131] Processor 1302 may have various features as a type-specific processor. For example, these may include a CPU, DSP, ASIC, controller, FPGA device, another hardware device, firmware device, or any combination thereof configured to perform the operations described herein. Processor 1302 may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration.

[0132] Memory 1304 may include cache memory (e.g., cache memory of processor 1302), 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 combinations of different types of memory. In some aspects, memory 1304 may include a non-transitory computer-readable medium. Memory 1304 may store instructions 1306. Instructions 1306 may include, when executed by processor 1302, causing processor 1302 to perform the operations described herein (e.g., ...). Figure 2-3 Instructions (4A-4C and 5-12, in part). Instruction 1306 may also be referred to as program code. Program code can be used to cause wireless communication devices to perform these operations, for example, by causing one or more processors (such as processor 1302) to control or command the wireless communication devices. The terms “instruction” and “code” should be interpreted broadly to include any type of computer-readable statement. For example, the terms “instruction” and “code” can refer to one or more programs, routines, subroutines, functions, procedures, etc. “Instruction” and “code” can include a single computer-readable statement or multiple computer-readable statements.

[0133] The sidelink configuration module 1308 can be implemented via hardware, software, or a combination thereof. For example, the sidelink configuration module 1308 can be implemented as a processor, circuitry, and / or instructions 1306 stored in memory 1304 and executed by processor 1302. In some examples, the sidelink configuration module 1308 can be integrated within the modem subsystem 1312. For example, the sidelink configuration module 1308 can be implemented via a combination of software components (e.g., executed by a DSP or general-purpose processor) and hardware components (e.g., logic gates and circuitry) within the modem subsystem 1312.

[0134] The sidelink configuration module 1308 can be used in various aspects of this disclosure, for example, Figure 2-3 The sidelink configuration module 1308 is configured to determine a multiplexing configuration for multiplexing sidelink transmissions with S-SSB transmissions in the sidelink BWP and to send the multiplexing configuration to the UE (e.g., UE 115, 215 and / or 1400).

[0135] In some aspects, the sidelink configuration module 1308 is configured to configure the sidelink synchronization UE to send S-SSB transmissions, as described above. Figure 4 The following are discussed in (B) and (C). In some aspects, the sidelink configuration module 1308 is configured to configure the sidelink synchronization UE to multiplex S-SSB transmissions with sidelink transmissions using frequency interleaving (e.g., distributed RB), as discussed above with reference to 6, 7, 8, and / or 9. In some aspects, the sidelink configuration module 1308 is configured to configure the sidelink synchronization UE to multiplex S-SSB transmissions with sidelink transmissions in subchannels (e.g., consecutive RBs), and the sidelink synchronization UE can be configured to select between a frequency interleaving-based resource pool or a subchannel-based resource pool based on whether the sidelink time slot is configured for S-SSB transmissions, as discussed above with reference to 6, 7, 8, and / or 9. Figure 10 And / or 11 are discussed.

[0136] As shown in the figure, transceiver 1310 may include modem subsystem 1312 and RF unit 1314. Transceiver 1310 may be configured to communicate bidirectionally with other devices (such as UE 115 and / or another core network element). Modem subsystem 1312 may be configured to modulate and / or encode data according to MCS (e.g., LDPC coding scheme, turbo coding scheme, convolutional coding scheme, digital beamforming scheme, etc.). RF unit 1314 may be configured to process modulated / coded data (e.g., RRC configuration, S-SSB transmission configuration, sidelink resource pool configuration) from modem subsystem 1312 (regarding outbound transmission) or modulated / coded data transmitted from another source (such as UE 115) (e.g., performing analog-to-digital conversion or digital-to-analog conversion, etc.). RF unit 1314 may also be configured to perform analog beamforming in conjunction with digital beamforming. Although shown as being integrated together in transceiver 1310, modem subsystem 1312 and / or RF unit 1314 may be separate devices coupled together at BS105 so that BS105 can communicate with other devices.

[0137] RF unit 1314 can provide modulated and / or processed data (e.g., data packets (or more generally, data messages that may contain one or more data packets and other information)) to antenna 1316 for transmission to one or more other devices. For example, according to some aspects of this disclosure, this may include the transmission of information to complete attachment to a network and communication with the residing UE 115. Antenna 1316 can also receive data messages transmitted from other devices and provide the received data messages for processing and / or demodulation at transceiver 1310. Transceiver 1310 can provide demodulated and decoded data to sidelink configuration module 1308 for processing. Antenna 1316 may include multiple antennas with similar or different designs to maintain multiple transmission links.

[0138] In one aspect, BS1300 may include multiple transceivers 1310 implementing different RATs (e.g., NR and LTE). In another aspect, BS1300 may include a single transceiver 1310 implementing multiple RATs (e.g., NR and LTE). In yet another aspect, transceiver 1310 may include various components, wherein different combinations of components can implement different RATs.

[0139] Figure 14 This is a block diagram of an exemplary UE 1400 based on some aspects of this disclosure. UE 1400 may be as described above regarding... Figure 1The UE 115 under discussion. As shown in the figure, the UE 1400 may include a processor 1402, a memory 1404, an S-SSB and PSCCH / PSSCH multiplexing module 1408, a transceiver 1410 including a modem subsystem 1412 and a radio frequency (RF) unit 1414, and one or more antennas 1416. These components may communicate with each other directly or indirectly, for example, via one or more buses.

[0140] Processor 1402 may include a central processing unit (CPU), digital signal processor (DSP), application-specific integrated circuit (ASIC), controller, field-programmable gate array (FPGA) device, another hardware device, firmware device, or any combination thereof configured to perform the operations described herein. Processor 1402 may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration.

[0141] Memory 1404 may include cache memory (e.g., cache memory of processor 1402), 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 disk drives, other forms of volatile and non-volatile memory, or combinations of different types of memory. In one aspect, memory 1404 includes a non-transitory computer-readable medium. Memory 1404 may store or have instructions 1406 recorded thereon. Instructions 1406 may include, when executed by processor 1402, causing processor 1402 to perform aspects of this document combined with the present disclosure (e.g., ...). Figure 2-3 (All aspects of 4A-4C and 5-12), referring to the instructions for operation described in UE 115. Instruction 1406 can also be referred to as program code, which can be broadly interpreted to include any type of computer-readable statement, as described above regarding... Figure 13 Discussed.

[0142] The S-SSB and PSCCH / PSSCH multiplexing module 1408 can be implemented via hardware, software, or a combination thereof. For example, the S-SSB and PSCCH / PSSCH multiplexing module 1408 can be implemented as a processor, circuitry, and / or instructions 1406 stored in memory 1404 and executed by processor 1402. In some cases, the S-SSB and PSCCH / PSSCH multiplexing module 1408 can be integrated within the modem subsystem 1412. For example, the S-SSB and PSCCH / PSSCH multiplexing module 1408 can be implemented via a combination of software components (e.g., executed by a DSP or general-purpose processor) and hardware components (e.g., logic gates and circuitry) within the modem subsystem 1412.

[0143] The S-SSB and PSCCH / PSSCH multiplexing module 1408 can be used in various aspects of this disclosure, for example, Figure 2-3 All aspects of 4A-4C and 5-12. The S-SSB and PSCCH / PSSCH multiplexing module 1408 is configured to: determine a multiplexing configuration for multiplexing sidelink transmissions with S-SSB transmissions in the sidelink BWP; transmit S-SSB transmissions in the sidelink BWP during sidelink time slots; and transmit sidelink transmissions in the sidelink BWP during sidelink time slots, wherein sidelink transmission includes multiplexing sidelink transmissions and S-SSB transmissions based on the multiplexing configuration.

[0144] In some aspects, the S-SSB and PSCCH / PSSCH multiplexing module 1408 is configured to transmit S-SSB transmissions, as discussed above with reference to 4B and 4C respectively. In some aspects, the S-SSB and PSCCH / PSSCH multiplexing module 1408 is configured to multiplex S-SSB transmissions with sidelink transmissions transmitted in a frequency interleaving body (e.g., distributed RB), as discussed above with reference to... Figure 6 , 7 The above discussion is made in sections 8 and / or 9. In some aspects, the S-SSB and PSCCH / PSSCH multiplexing module 1408 is configured to multiplex S-SSB transmissions with sidelink transmissions sent in subchannels (e.g., consecutive RBs), and can determine whether to utilize a frequency-interleaved-based resource pool or a subchannel-based resource pool based on whether the sidelink time slots are configured for S-SSB transmissions, as referred to above. Figure 10 And / or 11 discussed. In some aspects, sidelink transmissions may include those referred to above. Figure 12 The discussion includes at least one of the sidelink data or CSI-RS.

[0145] As shown in the figure, transceiver 1410 may include modem subsystem 1412 and RF unit 1414. Transceiver 1410 may be configured to communicate bidirectionally with other devices (such as BS105). Modem subsystem 1412 may be configured to modulate and / or encode data from memory 1404 and / or S-SSB and PSCCH / PSSCH multiplexing module 1408 according to modulation and coding schemes (MCS) (e.g., low-density parity-check (LDPC) coding scheme, turbo coding scheme, convolutional coding scheme, digital beamforming scheme, etc.). RF unit 1414 may be configured to process modulated / coded data (e.g., PSCCH, PSSCH, SCI, sidelink data, S-SSB, CSI-RS, CSI-RS trigger) from modem subsystem 1412 (regarding outbound transmissions) or modulated / coded data transmitted from another source (such as UE 115 or BS105) (e.g., performing analog-to-digital conversion or digital-to-analog conversion, etc.). RF unit 1414 can also be configured to perform analog beamforming in conjunction with digital beamforming. Although shown as being integrated together in transceiver 1410, modem subsystem 1412 and RF unit 1414 can be separate devices coupled together at UE 115 to enable UE 115 to communicate with other devices.

[0146] RF unit 1414 can provide modulated and / or processed data (e.g., data packets (or more generally, data messages that may include one or more data packets and other information)) to antenna 1416 for transmission to one or more other devices. Antenna 1416 can also receive data messages transmitted from other devices. Antenna 1416 can provide the received data messages for processing and / or demodulation at transceiver 1410. Transceiver 1410 can provide demodulated and decoded data (e.g., RRC configuration, S-SSB transmission configuration, sidelink resource pool configuration) to S-SSB and PSCCH / PSSCH multiplexing module 1408 for processing. Antenna 1416 may include multiple antennas with similar or different designs to maintain multiple transmission links. RF unit 1414 can configure antenna 1416.

[0147] In one aspect, UE 1400 may include multiple transceivers 1410 implementing different RATs (e.g., NR and LTE). In another aspect, UE 1400 may include a single transceiver 1410 implementing multiple RATs (e.g., NR and LTE). In yet another aspect, transceiver 1410 may include various components, wherein different combinations of components can implement different RATs.

[0148] Figure 15 This is a flowchart of a wireless communication method 1500 according to some aspects of this disclosure. Aspects of method 1500 can be performed by a computing device of a wireless communication apparatus (e.g., a processor, processing circuitry, and / or other suitable components) or other suitable units for performing the steps. For example, a wireless communication apparatus (such as UE 115, 215, or 1400) can utilize one or more components (such as processor 1402, memory 1404, S-SSB and PSCCH / PSSCH multiplexing module 1408, transceiver 1410, modem 1412, and one or more antennas 1416) to perform the steps of method 1500. Method 1500 can be performed as described above. Figure 2-3 Similar mechanisms to those described in 4A-4C and 5-12. As shown in the figure, method 1500 includes several enumerated steps, but aspects of method 1500 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.

[0149] At block 1510, the UE (e.g., UE 115, 215, and / or 1400) determines a multiplexing configuration for multiplexing sidelink transmissions with S-SSB transmissions in a sidelink BWP (e.g., SLBWP 422). In some cases, the UE may utilize one or more components (such as processor 1402, memory 1404, S-SSB and PSCCH / PSSCH multiplexing module 1408, transceiver 1410, modem 1412, and one or more antennas 1416) to determine the multiplexing configuration, such as whether to use frequency-interleaved waveform sidelink transmissions with frequency-multiplexed PSCCH / PSSCH, time-interleaved waveform sidelink transmissions with frequency-multiplexed PSCCH / PSSCH, or subchannel-based waveform sidelink transmissions for multiplexing.

[0150] At box 1520, the UE transmits S-SSB transmissions in the sideline BWP during the sideline time slot. In some cases, the UE may utilize one or more components such as processor 1402, memory 1404, S-SSB and PSCCH / PSSCH multiplexing module 1408, transceiver 1410, modem 1412, and one or more antennas 1416 to transmit S-SSB transmissions.

[0151] In some aspects, S-SSB transmission occurs at an offset from the lowest frequency of the side link BWP based on the synchronization grid, for example, as in reference Figure 4 As shown in scheme 420 discussed in (B) of the document. In some aspects, the S-SSB transmission is aligned with the lowest frequency of the side link BWP, for example, as in reference Figure 4 As shown in Scheme 430, which is discussed in (C) of this paper.

[0152] At box 1530, the UE transmits lateral link transmissions in the lateral link BWP during the lateral link time slot. As part of transmitting S-SSB transmissions and transmitting lateral link transmissions, the UE multiplexes the lateral link transmissions and S-SSB transmissions based on a multiplexing configuration. In some cases, the UE may utilize one or more components, such as processor 1402, memory 1404, S-SSB and PSCCH / PSSCH multiplexing module 1408, transceiver 1410, modem 1412, and one or more antennas 1416, to transmit lateral link transmissions.

[0153] In some aspects, the UE can correspond to a side-link synchronization UE. As part of transmitting S-SSB transmission in box 1520, the UE can transmit S-SSB transmission. As part of transmitting side-link transmission in box 1530, the UE can transmit side-link transmission. In some aspects, the UE can correspond to a receiving side-link UE. As part of transmitting S-SSB transmission in box 1520, the UE can receive S-SSB transmission. As part of transmitting side-link transmission in box 1530, the UE can receive side-link transmission.

[0154] In some aspects, as part of transmitting sidelink transmissions at block 1530, the UE may transmit at least one of PSCCH transmissions (e.g., PSCCH transmission 610) or PSSCH transmissions (e.g., PSSCH transmission 620). In some aspects, as part of transmitting sidelink transmissions, the UE transmits sidelink transmissions within the sidelink BWP in a first frequency interleaving (e.g., frequency interleaving 508), for example, PSCCH transmissions and PSSCH transmissions are multiplexed in at least one of time or frequency, as referred to respectively. Figure 6 , 7 The solutions 600, 700, 800 and / or 900 discussed in 8 and / or 9 are shown.

[0155] In some aspects, the UE multiplexes PSCCH and PSSCH transmissions on frequencies. A first frequency interleaving includes multiple RBs spaced apart from each other by at least one other RB in the sidelink BWP. As part of transmitting sidelink transmissions at block 1530, the UE transmits PSCCH transmissions in the lowest and highest frequency RBs among the multiple RBs, and transmits PSSCH transmissions in one or more remaining RBs among the multiple RBs. In some aspects, the UE also selects a first frequency interleaving from the multiple frequency interleavings in the sidelink BWP for transmitting sidelink transmissions based on the fact that the lowest frequency RB of the first frequency interleaving does not overlap with frequency resources used for S-SSB transmissions. In some aspects, as part of transmitting sidelink transmissions at block 1530, the UE may transmit sidelink transmissions in a subset of the multiple RBs based on the alignment of S-SSB transmissions with the lowest frequency of the sidelink BWP, the subset excluding at least the lowest frequency RB among the multiple RBs. In some aspects, as part of transmitting sidelink transmissions at frame 1530, the UE may transmit PSCCH transmissions in the lowest and highest frequency RBs of a subset of multiple RBs (e.g., a partial interleaving), and PSSCH transmissions in one or more remaining RBs of the subset of multiple RBs. In some aspects, the UE may also monitor sidelink control information (SCI) during a sidelink time slot by performing blind decoding in the lowest and highest frequency RBs of a subset of multiple RBs, and performing blind decoding in the lowest and highest frequency RBs of the multiple RBs.

[0156] In some aspects, the UE multiplexes PSCCH and PSSCH transmissions in time. In some aspects, the UE may puncture PSCCH transmissions based on S-SSB transmissions in response to the time multiplexing of PSCCH and PSSCH transmissions. In some aspects, the UE may rate-match PSCCH transmissions based on S-SSB transmissions in response to the time multiplexing of PSCCH and PSSCH transmissions. In some aspects, as part of transmitting side-link transmissions at box 1530, the UE may transmit PSCCH transmissions in a CCE that does not overlap with the frequency resources used for S-SSB transmissions in response to the time multiplexing of PSCCH transmissions. In some aspects, the UE may also receive scheduling for PSCCH transmissions in a CCE that does not overlap with the frequency resources used for S-SSB transmissions.

[0157] In some aspects, when the UE multiplexes PSCCH and PSSCH transmissions 620 in time and / or frequency, the UE can puncture the PSSCH transmission based on the S-SSB transmission. In some aspects, the UE can rate match the PSSCH transmission based on the S-SSB transmission and can indicate rate matching information in the SCI of the PSCCH transmission.

[0158] In some aspects, as part of transmitting S-SSB transmission at block 1520, the UE may transmit S-SSB transmission. As part of transmitting sidelink transmission at block 1530, the UE may transmit at least one of Channel State Information Reference Signal (CSI-RS) or sidelink data in a first frequency interleaving, the sidelink transmission being multiplexed with the S-SSB transmission based on the Occupied Channel Bandwidth (OCB) parameter. In some aspects, as part of transmitting sidelink transmission at block 1530, the UE may transmit PSCCH transmission including triggering for CSI-RS, and transmit PSSCH transmission including CSI-RS punctured based on S-SSB transmission, wherein the PSSCH transmission is frequency-multiplexed with the PSCCH transmission, for example, as referenced above. Figure 12 As shown in Scheme 1200 under discussion.

[0159] In some aspects, as part of transmitting S-SSB transmission at block 1520, the UE may receive S-SSB transmission. As part of transmitting side-link transmission at block 1530, the UE may receive at least one of Channel State Information Reference Signal (CSI-RS) or side-link data in a first frequency interleaving. In some aspects, as part of transmitting side-link transmission, the UE may receive PSCCH transmission including triggering for CSI-RS, and receive PSSCH transmission including CSI-RS punctured based on S-SSB transmission, wherein the PSSCH transmission is frequency-multiplexed with the PSCCH transmission, for example, as referenced above. Figure 12 As shown in Scheme 1200 under discussion.

[0160] In some aspects, as part of transmitting sidelink transmissions at frame 1530, the UE may transmit PSCCH and PSSCH transmissions in a first sub-channel within the sidelink BWP that does not overlap with frequency resources used for S-SSB transmissions, the PSCCH and PSSCH transmissions being time-multiplexed. In some aspects, the UE may also determine, based on whether a sidelink time slot is configured for S-SSB transmissions, whether to select a first resource pool including multiple frequency interleavings in the sidelink BWP or a second resource pool including multiple sub-channels in the sidelink BWP for transmitting sidelink transmissions in the sidelink time slots, the multiple sub-channels including the first sub-channel. In some aspects, the determination of whether to select the first or second resource pool is based on a period associated with the S-SSB transmission. In some aspects, the UE also receives a resource pool configuration indicating a first resource pool including multiple frequency interleavings and a second resource pool including multiple sub-channels, for example, as shown in reference to... Figure 10 As illustrated in schemes 1000 and / or 1100 discussed in section 11. In some aspects, the UE may also monitor the SCI during PSCCH transmission in a first subchannel within a second resource pool, based on the sidelink time slot being configured for S-SSB transmission. In some aspects, the UE may also monitor the first SCI during a separate sidelink time slot, different from the sidelink time slot, the monitoring including performing blind decoding in at least one of the first or second resource pools. In some aspects, the UE may select a first subchannel from a plurality of subchannels for transmitting sidelink transmission based on OCB parameters. In some aspects, selecting the first subchannel includes prioritizing the first subchannel over the second subchannel for transmitting sidelink transmission based on the first subchannel being at a higher frequency than the second subchannel among the plurality of subchannels. In some aspects, as part of transmitting S-SSB transmission at block 1530, the UE may transmit S-SSB transmission in the sidelink BWP during the sidelink time slot. As part of transmitting sidelink transmissions at box 1530, the UE may transmit sidelink transmissions in a first sub-channel within the sidelink BWP during a sidelink time slot. These sidelink transmissions are multiplexed with S-SSB transmissions within the sidelink time slot based on OCB parameters. In some aspects, as part of transmitting S-SSB transmissions at box 1520, the UE may receive S-SSB transmissions in the sidelink BWP during a sidelink time slot. As part of transmitting sidelink transmissions at box 1530, the UE may receive sidelink transmissions in a first sub-channel within the sidelink BWP during a sidelink time slot.

[0161] Figure 16This is a flowchart of a wireless communication method 1600 according to some aspects of this disclosure. Aspects of method 1600 can be performed by a computing device of a wireless communication apparatus (e.g., a processor, processing circuitry, and / or other suitable components) or other suitable units for performing the steps. For example, a wireless communication apparatus (such as BS105, 205, or 1300) can utilize one or more components (such as processor 1302, memory 1304, sidelink configuration module 1308, transceiver 1310, modem 1312, and one or more antennas 1316) to perform the steps of method 1600. Method 1600 can be implemented as described above. Figure 2-3 Similar mechanisms to those described in 4A-4C and 5-12. As shown in the figure, method 1600 includes several enumerated steps, but aspects of method 1600 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.

[0162] At block 1610, the BS (e.g., BS105, 205, and / or 1300) determines a multiplexing configuration for multiplexing sidelink transmissions with S-SSB transmissions in a sidelink BWP (e.g., SLBWP 422). In some cases, the BS may utilize one or more components (such as processor 1302, memory 1304, sidelink configuration module 1308, transceiver 1310, modem 1312, and one or more antennas 1316) to determine the multiplexing configuration, for example, whether to use frequency-interleaved waveform sidelink transmissions with frequency-multiplexed PSCCH / PSSCH, time-interleaved waveform sidelink transmissions with frequency-multiplexed PSCCH / PSSCH, or subchannel-based waveform sidelink transmissions for multiplexing.

[0163] In some aspects, the S-SSB transmission is offset from the lowest frequency of the side link BWP based on the synchronization grid. In some aspects, the S-SSB transmission is aligned with the lowest frequency of the side link BWP. In some aspects, the side link transmission includes at least one of a PSCCH transmission or a PSSCH transmission multiplexed in at least one of time or frequency.

[0164] At box 1620, the BS sends multiplexing configuration to the UE (e.g., UE 115, 215, and / or 1400). In some cases, the BS may use one or more components (such as processor 1302, memory 1304, sidelink configuration module 1308, transceiver 1310, modem 1312, and one or more antennas 1316) to send multiplexing configuration to the UE.

[0165] In some aspects, the BS may also send a resource configuration to the UE, which indicates a first resource pool comprising multiple frequency interleavings in the sidelink BWP for transmitting sidelink transmissions. In some aspects, the BS may also send to the UE scheduling for PSCCH and PSSCH transmissions in the first frequency interleaving of the multiple frequency interleavings, wherein PSCCH transmissions scheduled in a CCE that does not overlap with frequency resources used for S-SSB transmissions are based on the time multiplexing of PSCCH and PSSCH transmissions. In some aspects, the resource configuration may also indicate a second resource pool comprising multiple sub-channels in the sidelink BWP, for example, as referenced above. Figure 10 As illustrated in schemes 1000 and / or 1100 discussed in section 11, the first resource pool may include a first-side cross-link time slot set, and the second resource pool may include a second-side cross-link time slot set different from the first-side cross-link time slot set, the second-side cross-link time slot set being associated with the period of S-SSB transmission. In some aspects, the BS may determine a number of resource pools, including the first resource pool and the second resource pool, based on the capabilities of the UE.

[0166] Information and signals can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0167] The various illustrative boxes and modules described in connection with the disclosure herein can be implemented or executed using a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic unit, discrete hardware component or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but alternatively, 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, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0168] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions can be stored on or transmitted via a computer-readable medium as one or more instructions or code. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functions can also be physically located in various locations, including being distributed such that different parts of the functions are implemented in different physical locations. Furthermore, as used herein (including in the claims), "or" as used in a list of items (e.g., a list of items ending with phrases such as "at least one of" or "one or more of") indicates an inclusive list, such that a list such as [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).

[0169] As will be appreciated by those skilled in the art at this time, and depending on the specific application at the time, numerous modifications, substitutions, and alterations can be made to the materials, apparatus, configuration, and methods of use of the devices disclosed herein without departing from the spirit and scope of this disclosure. Therefore, the scope of this disclosure should not be limited to the specific embodiments shown and described herein (as they are only by way of some examples), but should be fully commensurate with the appended claims and their functional equivalents.

Claims

1. A method for wireless communication performed by a user equipment (UE), the method comprising: Determine a multiplexing configuration for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in the sidelink bandwidth portion (BWP), wherein the sidelink transmissions include at least physical sidelink control channel (PSCCH) transmissions and physical sidelink shared channel (PSSCH) transmissions. During the side link time slot, the S-SSB transmission is transmitted in the side link BWP; and During the sidelink time slot, the sidelink transmission is transmitted in the sidelink BWP, wherein transmitting the S-SSB transmission and transmitting the sidelink transmission include: multiplexing the sidelink transmission and the S-SSB transmission based on the multiplexing configuration. The transmission of the sidelink data includes: transmitting the sidelink data within the sidelink BWP in a first frequency interleaving, wherein the first frequency interleaving includes a plurality of RBs spaced apart from each other by at least one other resource block (RB) in the sidelink BWP, and Wherein, the PSCCH transmission and the PSSCH transmission are multiplexed in at least one of time or frequency, and transmitting the side link transmission includes: transmitting the PSCCH transmission in the lowest frequency RB and the highest frequency RB among the plurality of RBs, and transmitting the PSSCH transmission in one or more of the remaining RBs among the plurality of RBs.

2. The method according to claim 1, wherein, The transmission of the S-SSB includes: The S-SSB transmission is carried out at an offset from the lowest frequency of the side link BWP based on the synchronization grid.

3. The method according to claim 1, wherein, The transmission of the S-SSB includes: The S-SSB transmission is aligned with the lowest frequency of the side link BWP.

4. The method according to claim 1, in, The method further includes: Monitoring side link control information (SCI) during the side link time slot, the monitoring includes: Blind decoding is performed on the lowest and highest frequency RBs among the plurality of RBs.

5. The method according to claim 1, further comprising: The PSSCH transmission is punctured based on the S-SSB transmission.

6. The method according to claim 1, further comprising: Rate matching of the PSSCH transmission is performed based on the S-SSB transmission.

7. The method according to claim 6, wherein, The transmission of the side link also includes: The PSCCH transmission includes side link control information (SCI) that includes rate matching information for the PSSCH transmission.

8. The method according to claim 1, wherein: The transmission of the S-SSB includes: Send the S-SSB transmission, and The transmission of the side link includes: In the first frequency interleaving, at least one of channel state information reference signal (CSI-RS) or side link data is transmitted, wherein the side link transmission is multiplexed with the S-SSB transmission based on the occupied channel bandwidth (OCB) parameter.

9. The method according to claim 1, wherein: The transmission of the S-SSB includes: Receive the S-SSB transmission, and The transmission of the side link includes: In the first frequency interleaving, at least one of the following is received: Channel State Information Reference Signal (CSI-RS) or side link data.

10. The method according to claim 1, wherein, The transmission of the side link also includes: In the first sub-channel within the side link BWP that does not overlap with the frequency resources used for the S-SSB transmission, the PSCCH transmission and the PSSCH transmission are transmitted, and the PSCCH transmission and the PSSCH transmission are time-multiplexed.

11. The method of claim 10, further comprising: Based on whether the sidelink time slot is configured for the S-SSB transmission, it is determined whether to select a first resource pool that includes multiple frequency interleavings in the sidelink BWP, or a second resource pool that includes multiple sub-channels in the sidelink BWP, for transmitting the sidelink transmission in the sidelink time slot, wherein the multiple sub-channels include the first sub-channel.

12. The method of claim 11, further comprising: The side link time slot is configured for the S-SSB transmission to monitor the side link control information (SCI) during the PSCCH transmission in the first sub-channel of the second resource pool.

13. The method of claim 11, further comprising: During a different side link time slot than the side link time slot, a first side link control information (SCI) is monitored, the monitoring including performing blind decoding in at least one of the first resource pool or the second resource pool.

14. The method of claim 11, further comprising: The first sub-channel is selected from the plurality of sub-channels based on the Occupied Channel Bandwidth (OCB) parameter for transmitting the side link transmission.

15. The method according to claim 14, wherein, The selection of the first sub-channel includes: The first subchannel is prioritized over the second subchannel for transmitting the side link transmission because the first subchannel operates at a higher frequency than the second subchannel among the plurality of subchannels.

16. A user equipment (UE), comprising: The processor is configured as follows: A multiplexing configuration is determined for multiplexing sidelink transmissions with sidelink synchronization signal block (S-SSB) transmissions in the sidelink bandwidth portion (BWP), wherein the sidelink transmissions include at least physical sidelink control channel (PSCCH) transmissions and physical sidelink shared channel (PSSCH) transmissions; and The transceiver is configured as follows: During the side link time slot, the S-SSB transmission is transmitted in the side link BWP; and During the sidelink time slot, the sidelink transmission is transmitted in the sidelink BWP, wherein the transceiver configured to transmit the S-SSB transmission and the sidelink transmission is configured to multiplex the sidelink transmission and the S-SSB transmission based on the multiplexing configuration. The transceiver configured to transmit the sidelink transmission is configured to transmit the sidelink transmission within the sidelink BWP in a first frequency interleaving, the first frequency interleaving comprising a plurality of RBs spaced apart from each other by at least one other resource block (RB) in the sidelink BWP, and Wherein, the PSCCH transmission and the PSSCH transmission are multiplexed in at least one of time or frequency, and wherein the transceiver configured to transmit the side link transmission is configured to transmit the PSCCH transmission in the lowest frequency RB and the highest frequency RB among the plurality of RBs, and to transmit the PSSCH transmission in one or more of the remaining RBs among the plurality of RBs.

17. The UE according to claim 16, wherein, The transceiver configured to transmit the S-SSB transmission is configured as follows: The S-SSB transmission is carried out at an offset from the lowest frequency of the side link BWP based on the synchronization grid.

18. The UE according to claim 16, wherein, The transceiver configured to transmit the S-SSB transmission is configured as follows: The S-SSB transmission is aligned with the lowest frequency of the side link BWP.

19. The UE according to claim 16, in, The processor is also configured to monitor side link control information (SCI) during the side link time slot, the monitoring including: Blind decoding is performed on the lowest and highest frequency RBs among the plurality of RBs.

20. The UE according to claim 16, wherein, The processor is also configured to: The PSSCH transmission is punctured based on the S-SSB transmission.

21. The UE according to claim 16, wherein, The processor is also configured to: Rate matching of the PSSCH transmission is performed based on the S-SSB transmission. The transceiver configured to transmit the side link transmission is configured as follows: The PSCCH transmission includes side link control information (SCI) that includes rate matching information for the PSSCH transmission.

22. The UE according to claim 16, wherein: The transceiver configured to transmit the S-SSB transmission is configured as follows: Send the S-SSB transmission, and The transceiver configured to transmit the side link transmission is configured as follows: In the first frequency interleaving, at least one of channel state information reference signal (CSI-RS) or side link data is transmitted, wherein the side link transmission is multiplexed with the S-SSB transmission based on the occupied channel bandwidth (OCB) parameter.

23. The UE according to claim 16, wherein: The transceiver configured to transmit the S-SSB transmission is configured as follows: Receive the S-SSB transmission, and The transceiver configured to transmit the side link transmission is configured as follows: In the first frequency interleaving, at least one of the following is received: Channel State Information Reference Signal (CSI-RS) or side link data.

24. The UE according to claim 16, wherein, The transceiver configured to transmit the side link transmission is configured as follows: In the first sub-channel within the side link BWP that does not overlap with the frequency resources used for the S-SSB transmission, the PSCCH transmission and the PSSCH transmission are transmitted, and the PSCCH transmission and the PSSCH transmission are time-multiplexed.

25. The UE according to claim 24, wherein, The processor is also configured to: Based on whether the sidelink time slot is configured for the S-SSB transmission, it is determined whether to select a first resource pool that includes multiple frequency interleavings in the sidelink BWP, or a second resource pool that includes multiple sub-channels in the sidelink BWP, for transmitting the sidelink transmission in the sidelink time slot, wherein the multiple sub-channels include the first sub-channel.

26. The UE according to claim 25, wherein, The processor is also configured to: The side link time slot is configured for the S-SSB transmission to monitor the side link control information (SCI) during the PSCCH transmission in the first sub-channel of the second resource pool.

27. The UE according to claim 25, wherein, The processor is also configured to: During a different side link time slot than the side link time slot, a first side link control information (SCI) is monitored, the monitoring including performing blind decoding in at least one of the first resource pool or the second resource pool.

28. The UE according to claim 25, wherein, The processor is also configured to: Based on the Occupied Channel Bandwidth (OCB) parameter, the first sub-channel is selected from the plurality of sub-channels for transmitting the sidelink transmission, and The processor configured to select the first sub-channel is configured as follows: The first subchannel is prioritized over the second subchannel for transmitting the side link transmission because the first subchannel operates at a higher frequency than the second subchannel among the plurality of subchannels.

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