Multiplexing sidelink ues with different capabilities

Abstract

Methods, apparatuses, and computer program products are provided to multiplex wireless devices with different bandwidths. An example method of a wireless device includes reserving one or more sidelink resources for a sidelink transmission, the one or more sidelink resources being associated with one or more sub-channels in one or more slots. The example method further includes transmitting a sidelink resource reservation reserving the one or more sidelink resources, the sidelink resource reservation including an indication that the sidelink resource reservation is associated with a reduced bandwidth wireless device.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit and priority of U.S. Provisional Application S / N. 63 / 090,108, filed October 9, 2020, entitled “MULTIPLEXING SIDELINK UES WITH DIFFERENT CAPABILITIES,” and U.S. Patent Application No. 17 / 450,280, filed October 7, 2021, entitled “MULTIPLEXING SIDELINK UES WITH DIFFERENT CAPABILITIES,” both of which are expressly incorporated herein by reference in their entirety. Technical Field

[0003] This disclosure generally relates to communication systems, and more particularly to sidelink communication with wireless devices having different bandwidths.

[0004] introduction

[0005] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable communication with multiple users by sharing available system resources. Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0006] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate at the city, country, region, and even global levels. An example telecommunications standard is 5G New Radio (NR). 5G NR is part of the continuous evolution of mobile broadband, promulgated by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology. These improvements can also be applied to other multiple access technologies and telecommunications standards that adopt them.

[0007] Brief Overview

[0008] The following provides a brief overview of one or more aspects to offer a basic understanding of such aspects. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify the key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as an introduction to the more detailed description that follows.

[0009] In one aspect of this disclosure, a method, computer-readable medium, and apparatus are provided for use in a wireless device. The apparatus may include a memory and at least one processor coupled to the memory. The memory and the at least one processor coupled to the memory may be configured to: reserve one or more sidelink resources for sidelink transmissions, the one or more sidelink resources being associated with one or more subchannels in one or more time slots. The memory and the at least one processor coupled to the memory may be further configured to: transmit a sidelink resource reservation for reserving the one or more sidelink resources, the sidelink resource reservation including an indication regarding the association of the sidelink resource reservation with the reduced bandwidth wireless device.

[0010] In another aspect of this disclosure, a method, computer-readable medium, and apparatus are provided for use at a wireless device. The apparatus may include a memory and at least one processor coupled to the memory. The memory and the at least one processor coupled to the memory may be configured to: receive a sidelink resource reservation associated with an indication relating to a sidelink resource reservation and a bandwidth-reduced wireless device, the sidelink resource reservation reserving a set of resources for sidelink transmissions from the bandwidth-reduced wireless device. The memory and the at least one processor coupled to the memory may be further configured to: exclude the set of resources from available candidate resources based on the indication.

[0011] To achieve the foregoing and related objectives, these one or more aspects include the features fully described below and specifically pointed out in the claims. Certain illustrative features of these one or more aspects are set forth in detail in the following description and drawings. However, these features merely indicate a few of the various ways in which the principles of these various aspects may be employed, and this description is intended to cover all such aspects and their equivalents. Brief description of the attached diagram

[0013] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network.

[0014] Figure 2 The various examples of sidelink time slot structures were explained.

[0015] Figure 3This is a diagram illustrating an example of a first and second device involved in wireless communication based on, for example, a side link.

[0016] Figure 4 It explains an example of wireless communication between devices based on V2X / V2V / D2D communication.

[0017] Figure 5 The example sensing and resource allocation used for sidelink transmission are explained.

[0018] Figure 6 The example resources used for sidelink transmission are explained.

[0019] Figure 7 The example resources used for sidelink transmission are explained.

[0020] Figure 8 This is a flowchart of a wireless communication method.

[0021] Figure 9 This is a diagram illustrating an example of the hardware implementation of the example device.

[0022] Figure 10 This is a flowchart of a wireless communication method.

[0023] Figure 11 This is a diagram illustrating an example of the hardware implementation of the example device.

[0024] Detailed description

[0025] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent only the configurations in which the concepts described herein can be practiced. This detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0026] Several aspects of a telecommunications system will now be described with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below and explained in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0027] As an example, an element, or any part of an element, or any combination of elements, may be implemented as a "processing system" including one or more processors. Examples of processors include: microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. One or more processors in a processing system can execute software. Software should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms.

[0028] Accordingly, in one or more example embodiments, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available medium accessible to a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disc storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other medium capable of being used to store computer-executable code in the form of instructions or data structures accessible to a computer.

[0029] While aspects are described herein by way of example, those skilled in the art will understand that additional implementations and use cases can arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, implementations and / or devices may arise via integrated chip implementations and other non-modular component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / shopping devices, medical devices, AI-enabled devices, etc.). While some examples may or may not be specific to particular use cases or applications, broad applicability of the described innovations is possible. Implementations can range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals requires several components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The innovations described herein are intended to be implemented in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or decomposed components, end-user equipment, etc., of various sizes, shapes, and configurations.

[0030] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also known as a wireless wide area network (WWAN)) includes base station 102, UE 104, evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). Base station 102 may include macrocells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macrocells include base stations. Small cells include femtocells, picocells, and microcells.

[0031] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with core network 190 via a second backhaul link 184. Among other functions, base station 102 can also perform one or more of the following functions: user data delivery, radio channel cryptography and cryptography decoding, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of Non-Access Stratum (NAS) messages, NAS node selection, synchronization, Radio Access Network (RAN) sharing, Multimedia Broadcast Multicast Service (MBMS), subscriber and equipment tracking, RAN Information Management (RIM), paging, location, and delivery of alarm messages. Base station 102 can communicate with each other directly or indirectly (e.g., via EPC 160 or core network 190) on third backhaul link 134 (e.g., X2 interface). First backhaul link 132, second backhaul link 184 and third backhaul link 134 can be wired or wireless.

[0032] Base station 102 can wirelessly communicate with UE 104. Each base station 102 can provide communication coverage for its respective geographical coverage area 110. Overlapping geographical coverage areas 110 may exist. For example, small cell 102' may have coverage areas 110' that overlap with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells may be referred to as a heterogeneous network. The heterogeneous network may also include a Home Evolved B Node (eNB) (HeNB) that can provide services to a restricted group referred to as a Closed Subscriber Group (CSG). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also known as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technologies, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links may use one or more carriers. For each carrier allocated in a total of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum with a bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL compared to UL). Component carriers may include primary component carriers and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell), and the secondary component carrier may be referred to as the secondary cell (SCell).

[0033] Some UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 may use DL / UL WWAN spectrum. D2D communication link 158 may use one or more sidelink channels, such as the Physical Sidelink Broadcast Channel (PSBCH), Physical Sidelink Discovery Channel (PSDCH), Physical Sidelink Shared Channel (PSSCH), and Physical Sidelink Control Channel (PSCCH). D2D communication can be achieved through a wide variety of wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0034] The wireless communication system may further include a Wi-Fi access point (AP) 150 communicating with a Wi-Fi station (STA) 152 via a communication link 154, for example, in an unlicensed spectrum such as 5 GHz. When communicating in unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) before communication to determine whether the channel is available.

[0035] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) used by Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can enhance access network coverage and / or increase access network capacity.

[0036] The electromagnetic spectrum is typically subdivided into various classes, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating bands have been designated as frequency ranges FR1 (410MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). Although a portion of FR1 is greater than 6GHz, it is generally (interchangeably) referred to as the “sub-6GHz” band in various documents and articles. Similar naming issues sometimes arise regarding FR2; although different from the Very High Frequency (EHF) band (30GHz–300GHz) designated as the “millimeter wave” band by the International Telecommunication Union (ITU), FR2 is generally (interchangeably) referred to as the “millimeter wave” band in various documents and articles.

[0037] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR studies have designated the operating bands of these IF bands as the frequency range designation FR3 (7.125 GHz – 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, thus effectively extending the features of FR1 and / or FR2 into the IF band. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been designated as the frequency range designations FR2-2 (52.6 GHz – 71 GHz), FR4 (52.6 GHz – 114.25 GHz), and FR5 (114.25 GHz – 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0038] In light of the foregoing, unless otherwise stated, it should be understood that, as used herein, the term "sub-6GHz" and the like can broadly refer to frequencies less than 6GHz, within FR1, or including intermediate frequency band frequencies. Furthermore, unless otherwise stated, it should be understood that, as used herein, the term "millimeter wave" and the like can broadly refer to frequencies that can include intermediate frequency band frequencies, within FR2, FR4, FR2-2 and / or FR5, or within the EHF band.

[0039] Whether it is a small cell 102' or a large cell (e.g., a macro base station), base station 102 may include and / or be referred to as an eNB, gB node (gNB), or another type of base station. Some base stations (such as gNB 180) may operate in conventional sub-6 GHz spectrum, millimeter wave frequencies, and / or near-millimeter wave frequencies to communicate with UE 104. When gNB 180 operates in millimeter wave frequencies or near-millimeter wave frequencies, gNB 180 may be referred to as a millimeter wave base station. Millimeter wave base station 180 may utilize beamforming 182 with UE 104 to compensate for path loss and short range. Base station 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0040] Base station 180 may transmit beamformed signals to UE 104 in one or more transmission directions 182'. UE 104 may receive beamformed signals from base station 180 in one or more reception directions 182'. UE 104 may also transmit beamformed signals to base station 180 in one or more transmission directions. Base station 180 may receive beamformed signals from UE 104 in one or more reception directions. Base station 180 / UE 104 may perform beam training to determine the optimal reception and transmission directions for each of base station 180 / UE 104. The transmission and reception directions of base station 180 may be the same or different. The transmission and reception directions of UE 104 may be the same or different.

[0041] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 may communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Generally, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are delivered through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, and / or other IP services. The BM-SC 170 provides functionality for MBMS user service provisioning and delivery. The BM-SC 170 can serve as an entry point for content provider MBMS transmissions, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can be used to distribute MBMS traffic to base station 102 within a Broadcast-Specific Service Single Frequency Network (MBSFN) area, and can be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0042] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 may communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that handles signaling between UE 104 and the core network 190. Generally, AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP services 197. IP services 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), Packet Switched (PS) Streaming (PSS) services, and / or other IP services.

[0043] Base stations may include and / or be referred to as gNB, B-node, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmit / receive point (TRP), or some other suitable term. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptop devices, personal digital assistants (PDAs), satellite radios, GPS devices, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet devices, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similar functional devices. Some UE 104 may be referred to as IoT devices (e.g., parking timers, oil pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or some other suitable term. In some scenarios, the term UE may also apply to one or more accompanying devices, such as in a device constellation arrangement. One or more of these devices may access the network jointly and / or individually.

[0044] UE 104, Roadside Unit (RSU) 107, or other sidelink devices may include a multiplexing component 198 configured to: reserve one or more sidelink resources for sidelink transmissions, the one or more sidelink resources being associated with one or more subchannels in one or more time slots; and transmit a sidelink resource reservation for reserving the one or more sidelink resources, the sidelink resource reservation including an indication of the sidelink resource reservation being associated with a radio device with reduced bandwidth.

[0045] In some aspects, UE 104, RSU 107, or other sidelink devices may include a multiplexing component 199 configured to: receive a sidelink resource reservation associated with an indication of a sidelink resource reservation and a reduced bandwidth radio device, the sidelink resource reservation reserving a set of resources for sidelink transmissions from the reduced bandwidth radio device; and exclude the set of resources from the available candidate resources based on the indication.

[0046] While the following description may focus on 5G NR, the concepts described herein are applicable to other similar areas such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0047] Figure 2 Figures 200 and 210 illustrate example aspects of time slot structures that can be used for sidelink communication (e.g., between UE 104, RSU 107, etc.). In some examples, the time slot structure may be within a 5G / NR frame structure. In other examples, the time slot structure may be within an LTE frame structure. Although the following description may focus on 5G NR, the concepts described herein are applicable to other similar domains such as LTE, LTE-A, CDMA, GSM, and other wireless technologies. Figure 2 The example time slot structure in the diagram is merely an example, and other sidelink communications may have different frame structures and / or different channels for sidelink communication. A frame (10 ms) can be divided into 10 equally sized subframes (1 ms). Each subframe may include one or more time slots. Subframes may also include mini-time slots, which may include 7, 4, or 2 symbols. Each time slot may include 7 or 14 symbols, depending on the time slot configuration. For time slot configuration 0, each time slot may include 14 symbols, while for time slot configuration 1, each time slot may include 7 symbols. Figure 200 illustrates a single resource block for a single time slot transmission; for example, this single time slot transmission may correspond to a 0.5 ms transmission time interval (TTI). The physical sidelink control channel can be configured to occupy multiple physical resource blocks (PRBs), for example, 10, 12, 15, 20, or 25 PRBs. The PSCCH can be limited to a single subchannel. For example, the PSCCH duration can be configured to 2 or 3 symbols. For example, subchannels may include 10, 15, 20, 25, 50, 75, or 100 PRBs. Resources for sidelink transmissions may be selected from a resource pool that includes one or more subchannels. As a non-limiting example, a resource pool may include between 1 and 27 subchannels. A PSCCH size may be established for the resource pool, for example, between 10% and 100% of the duration of one subchannel for 2 or 3 symbols. Figure 2 Figure 210 illustrates an example where the PSCCH occupies approximately 50% of a subchannel, serving as an example to illustrate the concept of PSCCH occupies a subchannel. The Physical Sidelink Shared Channel (PSSCH) occupies at least one subchannel. In some examples, the PSCCH may include a first portion of Sidelink Control Information (SCI), and the PSSCH may include a second portion of the SCI.

[0048] A resource grid can be used to represent the frame structure. Each time slot may include a resource block (RB) extending for 12 consecutive subcarriers (also known as a physical RB (PRB)). The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme. Figure 2As explained, some REs may include control information in the PSCCH and some REs may include demodulation RS (DMRS). At least one symbol may be used for feedback. Figure 2 An example of a two-symbol structure for a Physical Side-Link Feedback Channel (PSFCH) with adjacent gap symbols is explained. Symbols before and / or after the feedback can be used to transition between data reception and feedback transmission. This gap allows the device to (e.g., in a subsequent time slot) switch from operating as a transmitting device to preparing to operate as a receiving device. As explained, data can be transmitted in the remaining REs. This data may include the data message described herein. The position of any of the data, DMRS, SCI, feedback, gap symbols, and / or LBT symbols may be related to... Figure 2 The examples described in the text differ. In some respects, multiple time slots can be grouped together.

[0049] Figure 3 This is block diagram 300 showing a first wireless communication device 310 communicating with a second wireless communication device 350 via a sidelink. In some examples, devices 310 and 350 may communicate via V2X or other D2D communication. This communication may be based on a sidelink using a PC5 interface. Devices 310 and 350 may include UEs, RSUs, base stations, etc. Packets may be provided to a controller / processor 375 that implements Layer 3 and Layer 2 functionality. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Media Access Control (MAC) layer.

[0050] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functionality associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) decoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The decoded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. A channel estimate from channel estimator 374 can be used to determine the coding and modulation scheme and for spatial processing. This channel estimate can be derived from a reference signal and / or channel condition feedback transmitted by device 350. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0051] At device 350, each receiver 354RX receives a signal via its respective antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides this information to the receive (RX) processor 356. The TX processor 368 and RX processor 356 implement Layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on this information to recover any spatial stream destined for device 350. If multiple spatial streams are destined for device 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal consists of a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, along with the reference signal, are recovered and demodulated by determining the signal constellation points most likely to have been transmitted by device 310. These soft decisions can be based on a channel estimate calculated by the channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the original data and control signals transmitted by device 310 over the physical channel. This data and control signals are then provided to the controller / processor 359 that implements layer 3 and layer 2 functionality.

[0052] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. The controller / processor 359 can provide demultiplexing, packet reassembly, ciphertext decoding, header decompression, and control signal processing between transmission and logical channels. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0053] Similar to the functionality described in conjunction with the transmissions performed by device 310, controller / processor 359 can provide RRC layer functionality associated with system information (e.g., MIB, SIB) capture, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (cryptography, cryptographic decoding, integrity protection, integrity verification); RLC layer functionality associated with the transmission of upper-layer PDUs, error correction via ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto TBs, demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority ordering.

[0054] The channel estimate derived by the channel estimator 358 from the reference signal or feedback transmitted by the device 310 can be used by the TX processor 368 to select an appropriate coding and modulation scheme and to facilitate spatial processing. The spatial stream generated by the TX processor 368 can be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0055] Transmissions are processed at device 310 in a manner similar to that described for the receiver function at device 350. Each receiver 318RX receives signals via its corresponding antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides that information to the RX processor 370.

[0056] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. The controller / processor 375 provides demultiplexing, packet reassembly, ciphertext decoding, header decompression, and control signal processing between transmission and logical channels. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0057] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform and Figure 1 The reused components 198 combine various aspects.

[0058] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform and Figure 1 The reusable components 199 combine various aspects.

[0059] Figure 4 Example 400 illustrates wireless communication between devices based on sidelink communication. Communication can be based on, among other things... Figure 2 The time slot structure is described in various aspects. For example, UE 402 may transmit transmission 414 (e.g., including a control channel and / or a corresponding data channel), which may be received by UE 404. The control channel may include information for decoding the data channel and may also be used by the receiving device to avoid interference by suppressing transmissions on occupied resources during data transmission. The number of TTIs and RBs that the data transmission will occupy may be indicated in the control message from the transmitting device. In addition to being able to operate as receiving devices, UEs 402, 404, 406, and 408 may also be able to operate as transmitting devices. Therefore, UEs 406 and 408 are interpreted as transmitting transmissions 416 and 420. Transmissions 414, 415, 416, and 420 may be broadcast or multicast to nearby devices. For example, UE 402 may transmit communications intended to be received by other UEs within range 401 of UE 414. Additionally / alternatively, RSU 407 may receive communications from UEs 402, 404, 406, 408 and / or transmit communications 418 to UEs 402, 404, 406, 408. Some of UEs 402, 404, 406, 408, or RSU 407 may be bandwidth-reducing UEs and may include multiplexing components 198, such as in combination with... Figure 1As described, it enables the UE to reserve one or more sidelink resources for sidelink transmission, which are associated with sidelink frequency resource allocation. Multiplexing component 198 may further enable the UE to transmit a sidelink resource reservation including an indication that the sidelink resource reservation is associated with a bandwidth-reduced radio device. Some of UEs 402, 404, 406, 408, or RSU 407 may be non-bandwidth-reduced UEs configured to receive sidelink resource reservations associated with an indication that the sidelink resource reservation is associated with a bandwidth-reduced radio device, the sidelink resource reservation reserving a set of resources. Non-bandwidth-reduced UEs may be further configured to suppress the consideration of the resource set as candidate resources for selection, or may preempt reserved resources after determining that a bandwidth-reduced UE has also reserved the same resources.

[0060] In addition to higher-capacity devices, wireless communication can support devices with reduced bandwidth. Examples of higher-capacity devices include, among others, high-end smartphones, V2X devices, URLLC devices, and eMBB devices. Examples of reduced-bandwidth devices include, among others, wearable devices, industrial wireless sensor networks (IWSN), surveillance cameras, and low-end smartphones. For example, NR communication systems can support both full-bandwidth devices and reduced-bandwidth devices. Reduced-bandwidth devices can be referred to as NR lightweight devices, low-end devices, lower-end devices, etc. Reduced-bandwidth UEs can communicate based on various types of wireless communication. For example, smart wearable devices can transmit or receive communication based on Low Power Wide Area (LPWA) / mMTC, loose IoT devices can transmit or receive communication based on URLLC, sensors / cameras can transmit or receive communication based on eMBB, and so on.

[0061] As an example, a UE with reduced bandwidth can have reduced transmit or receive bandwidth compared to other UEs. For instance, a UE with reduced bandwidth may have an operating bandwidth between 5 MHz and 20 MHz for both transmit and receive, in contrast to other UEs that may have bandwidths up to 100 MHz.

[0062] To facilitate scalable and deployable communications, various types of bandwidth-reduced devices can be introduced. For example, bandwidth-reduced devices for URLLC / eMBB can have more stringent specifications in terms of peak throughput, latency, and reliability than lightweight bandwidth-reduced devices, which in turn can have more stringent specifications than ultra-lightweight bandwidth-reduced devices. On the other hand, ultra-lightweight bandwidth-reduced devices can offer improved coverage, complexity, and power consumption compared to lightweight bandwidth-reduced devices, and lightweight bandwidth-reduced devices can further offer improved coverage, complexity, and power consumption compared to bandwidth-reduced devices for URLLC / eMBB. Some bandwidth-reduced devices can support smaller bandwidths compared to non-bandwidth-reduced devices.

[0063] In some respects, ultralight, bandwidth-reduced devices may have better coverage from sidelink relays, for example, a 20dB coverage extension. In other respects, low-power sidelink communication can be used in ultralight, bandwidth-reduced devices, such as wearables or home networks. Such sidelink communication for ultralight, bandwidth-reduced devices can be power-efficient. For example, sidelink relays can introduce power savings by avoiding a large number of repetitions (up to 2048 repetitions) used for coverage extension. In another example, for wearables or home networks, short-range sidelinks can take advantage of reduced power consumption compared to long-range downlinks or sidelinks. On the other hand, sidelink communication for V2X can consume significant power during sensing operations.

[0064] Sidelink communication can utilize a set of time / frequency resources defined by resource pools. A radio device (e.g., a UE) can be configured by a higher layer to have one or more sidelink resource pools. Sidelink resource pools can be used for either PSSCH transmission or PSSCH reception.

[0065] In some wireless communication systems, sidelink communication can support two resource allocation modes. A sidelink resource pool can be associated with either of these modes. In the first resource allocation mode (Resource Allocation Mode 1), sidelink resources can be dynamically indicated by the base station via Downlink Control Information (DCI) format 3_0, or configured. Both Type 1 (configuration-based) and Type 2 (activation-based) sidelink resource configurations can be supported. In the second mode (Resource Allocation Mode 2), the UE can select the sidelink transmission resources it wants to use for sidelink transmissions, for example, without scheduling from the base station. The UE can determine the sidelink transmission resources based on sensing and resource reservation. In some examples, Mode 2 resource allocation may be referred to as sensing-based resource allocation for sidelink transmissions.

[0066] In the frequency domain, a sidelink resource pool can include a certain number of coherent subchannels (numSubchannel). Subchannels can include a certain number of coherent PRBs (subchannelsize). The number of coherent subchannels and the number of coherent PRBs can be higher-layer parameters.

[0067] Combination Figure 5 In Example 500, in resource allocation mode 2, the higher layer can request UE 104, including multiplexing component 198, to determine a subset of resources from which the higher layer can select resources for PSSCH / PSCCH transmission. To trigger resource selection at slot n, the higher layer can provide several parameters including t2min_SelectionWindow (t2 minimum selection window) (indicating the configured priority {1, 5, 10, 20}·2). μ (where μ can be equal to 0, 1, 2, 3) given a prio TX Values ​​for subcarrier spacing (SCS) of 15, 30, 60, and 120 kHz, internal T 2min It can be set to the corresponding value from the higher-level parameter t2min_SelectionWindow.

[0068] If T 2min If the time is less than the remaining packet delay budget (PDB) (in time slots), then T2 can be determined by UE 104, and T 2min It can be less than or equal to T2, which can be less than or equal to the remaining packet delay budget. If T 2min If the resource selection window size T2 is not less than the remaining packet delay budget, then the resource selection window size T2 can be set to the remaining packet delay budget. The parameters may further include t0_SensingWindow(t0_sensing window), where the internal parameter T0 indicates the sensing window size ( Figure 5 In the context of T_0), the sensing window size can be the number of time slots corresponding to t0_SensingWindow ms. The sensing window can have a certain range. The time slot definition, where ( Figure 5T_proc, 0) can be defined. The UE can monitor time slots that may belong to the sidelink resource pool within the sensing window, excluding those time slots in which its own transmissions occur. The UE can decode SCIs received from other UEs within the sensing window. Each UE can attempt to reserve resources that conflict with the resource selection window of the interested UE in the future. Based on the priority (pj) of the packets for which another UE is reserving resources, the priority (pi) of the packets of the interested UE, the configured Reference Signal Received Power (RSRP) for (pi, pj) pairs, and the RSRP measured by the interested UE—based on the PSCCH / PSSCH received from that other UE—the interested UE can determine whether the candidate resource is considered available (i.e., considered a candidate resource for selection).

[0069] like Figure 6 As illustrated in Example 600, resource pool 602 for non-reduced bandwidth UEs may overlap with (i.e., cover) resource pool 604 for reduced bandwidth UEs. In some aspects, reduced bandwidth UEs may operate within a portion of the bandwidth of either resource pool 602 or resource pool 604. When a non-reduced bandwidth UE reserves resource set 606 in that portion of the resource pool, signaling for reservation 608 may consume bandwidth in resource pool 604 for reduced bandwidth UEs. Because reservation 608 can be signaled from a portion of the bandwidth not included in the operating bandwidth of reduced bandwidth UEs, reduced bandwidth UEs may disregard reservation 608 when performing sensing and reservation. Therefore, conflicts may occur (which may be power-consuming for reduced bandwidth UEs). Furthermore, reservations made by reduced bandwidth UEs can be detected by non-reduced bandwidth UEs. The aspects presented herein can provide multiplexing mechanisms for both reduced bandwidth UEs and non-reduced bandwidth UEs to facilitate more efficient communication. In some aspects, the multiplexing mechanism can be applied to all reduced bandwidth UEs. In some respects, multiplexing mechanisms can be applied to a subset of UEs that require reduced bandwidth (such as ultralight UEs).

[0070] like Figure 7 As illustrated in Example 700, in a communication environment surrounding a resource pool 702 for non-bandwidth-reduced UEs, a sidelink transmission resource reservation 706 from a bandwidth-reduced UE may, in some aspects, be associated with an indication that the reservation was made by the bandwidth-reduced UE. The indication may be included in a PSCCH or SCI (such as SCI2). Using this indication, the bandwidth-reduced UE can be identifiable as a non-bandwidth-reduced UE during the reservation process.

[0071] Sidelink frequency resource allocation for UEs configured to reduce bandwidth can be based on the number of sub-channels in a resource pool or a portion of the bandwidth of that resource pool. In some aspects, resource pool 704 configured for UEs to reduce bandwidth may not be shared by UEs not configured to reduce bandwidth. In other aspects, resource pool 704 configured for UEs to reduce bandwidth may be shared by UEs not configured to reduce bandwidth.

[0072] If resource pool 704 configured for bandwidth reduction is shared by UEs not configured for bandwidth reduction, resource reservations for both UEs can be based on the number of sub-channels in the larger resource pool (e.g., resource pool 702) or the total bandwidth of resource pool 702. Therefore, UEs configured for bandwidth reduction are aware of the larger resource pool 702 and can map their reservations to the same sub-channel grid understood by UEs not configured for bandwidth reduction. In some aspects, additional information can be indicated for each resource pool configured for bandwidth reduction. This additional information can indicate whether frequency resource allocation for transmission is based on the number of sub-channels in the transmission / reception resource pool (e.g., resource pool 704) of the UE configured for bandwidth reduction, or on the number of sub-channels in a different resource pool (e.g., resource pool 704). In some aspects, if frequency resource allocation for transmission is based on the number of sub-channels in a different resource pool (e.g., resource pool 704), the starting point of the first sub-channel for that resource pool, the size of these sub-channels, and the number of these sub-channels can be additionally indicated. In some respects, the bandwidth of each UE with reduced bandwidth can be a sub-channel, and it may not be necessary to include such additional information.

[0073] In some respects, each resource pool can be divided into multiple non-overlapping subbands. Each subband may include a coherent set of subchannels. Each bandwidth-reduced UE can transmit and receive within a single subband; for example, a resource pool configured for a bandwidth-reduced UE may cover one subband.

[0074] In some respects, if subbands are defined and configured, reservations made via each SCI sent by a non-reduced bandwidth UE can be made within a single subband, so that reduced bandwidth UEs active in the same subband can receive reservations and take them into account when performing resource selection.

[0075] In some aspects, reservations are cross-subband, or no subband is defined or configured. In such aspects, regardless of packet priority, after a non-reduced bandwidth UE detects a reservation from a reduced bandwidth UE, the non-reduced bandwidth UE can perform resource reselection or preemption in favor of the reduced bandwidth UE. For example, if a non-reduced bandwidth UE detects a reservation made by a reduced bandwidth UE, the non-reduced bandwidth UE cannot consider the resources indicated in 706 as potential candidates for selection, regardless of its packet priority, the reduced bandwidth UE's packet priority, or RSRP. In some aspects, for performing resource selection, preemption, or availability checks, higher priority (e.g., indicated by a higher or lower index number) can be assigned to the reduced bandwidth UE, regardless of the priority given in the SCI. In some aspects, priority can be based on a priority offset configured (pre-configured) per UE, per resource pool, per carrier, or per packet. For example, priority offset can be based on an identifier associated with the UE. As another example, priority offset can be based on a resource pool. As another example, priority offset can be based on the carrier priority or packet priority associated with the UE.

[0076] In some respects, priority thresholds can be used for non-reduced bandwidth UEs. If the packet priority for a non-reduced bandwidth UE is below the threshold, the non-reduced bandwidth UE may disregard resources indicated in the reservations of the reduced bandwidth UE as potential candidates, regardless of its packet priority, the reduced bandwidth UE's packet priority, or RSRP. If the packet priority is above the threshold, the non-reduced bandwidth UE may consider resources indicated in the reservations of the reduced bandwidth UE as potential candidates based on its packet priority, the reduced bandwidth UE's packet priority, or RSRP.

[0077] In some scenarios, separate sets of RSRP thresholds can be configured for (pi, pj), i.e., one RSRP threshold for when the UE attempting to reserve resources is a non-reduced bandwidth UE and another RSRP threshold for when the UE attempting to reserve resources is a reduced bandwidth UE, where pi is the packet priority of the non-reduced bandwidth UE and pj is the packet priority of the reduced bandwidth UE. For example, one RSRP can be used when a non-reduced bandwidth UE attempts to reserve resources in a subband available to a reduced bandwidth UE, while another RSRP can be used when it attempts to reserve resources outside such a subband. As an example, in the former case, the SCI for reserving resources can be transmitted in a subband available to a reduced bandwidth UE, and in the latter case, it is not. Separate RSRP thresholds can facilitate reservations made by reduced bandwidth UEs being more protected against preemption by non-reduced bandwidth UEs (e.g., a stricter threshold for non-reduced bandwidth UEs).

[0078] Figure 8 This is a flowchart 800 of a wireless communication method. The method can be performed by a wireless device with reduced bandwidth (e.g., UE104, UE408, device 902).

[0079] At 802, the wireless device may reserve one or more sidelink resources for sidelink transmission. These one or more sidelink resources may be associated with one or more sub-channels in one or more time slots. For example, 802 may be... Figure 9 The determination component 942 performs this action. In some aspects, the wireless device may reserve one or more sidelink resources for a sidelink transmission based on the generation of a pending sidelink transmission to be transmitted. If the wireless device has a pending sidelink transmission to be transmitted, the wireless device may reserve the one or more sidelink resources.

[0080] At 804, the wireless device can transmit a sidelink resource reservation, which includes an indication of how the sidelink resource reservation is associated with a wireless device that reduces bandwidth. For example, 804 may be... Figure 9 The reservation component 944 performs this function. In some aspects, the indication can be transmitted via PSCCH. In some aspects, the indication can be associated with SCI. In some aspects, sidelink resource reservations can be signaled or broadcast.

[0081] In some aspects, the one or more sub-channels in the one or more time slots may be associated with a resource pool. In some aspects, the resource pool may be associated with one or more bandwidth-reduced wireless devices that include these bandwidth-reduced wireless devices, and may not be shared with one or more non-bandwidth-reduced wireless devices. In some aspects, the resource pool may be shared with one or more non-bandwidth-reduced wireless devices and one or more bandwidth-reduced wireless devices that include these bandwidth-reduced wireless devices. In some aspects, the resource pool may be shared with one or more non-bandwidth-reduced wireless devices and one or more wireless devices with reduced bandwidth that include the wireless device, and the wireless device may be configured to use a portion of the bandwidth of the resource pool.

[0082] In some aspects, this portion may be based on the one or more sub-channels. In some aspects, the resource pool may be associated with an indication indicating whether the one or more sub-channels are based on a sidelink resource pool or a different resource pool. In some aspects, the one or more sub-channels may be based on different resource pools. In some aspects, the indication may further indicate the starting point of the first sub-channel for the sidelink resource pool, the size of the sub-channels in the sidelink resource pool, and the number of sub-channels in the sidelink resource pool. In some aspects, a bandwidth-reduced wireless device may be assigned a sub-channel as bandwidth. In some aspects, each resource pool for one or more wireless devices may be divided into multiple non-overlapping subbands, each non-overlapping subband may include a coherent group of sub-channels. In some aspects, a bandwidth-reduced wireless device may transmit and receive in a single non-overlapping subband among multiple non-overlapping subbands. In some aspects, non-overlapping subbands may be defined and configured, and each SCI from a non-bandwidth-reduced wireless device may be within a single non-overlapping subband. In some aspects, non-overlapping subbands may not be defined and may not be configured.

[0083] Figure 9 Figure 900 illustrates an example of the hardware implementation of device 902. Device 902 is a wireless device and includes a baseband unit 904. Baseband unit 904 can communicate with UE 104 via a cellular RF transceiver. Baseband unit 904 may include computer-readable medium / memory. Baseband unit 904 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. When executed by baseband unit 904, the software causes baseband unit 904 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by baseband unit 904 during software execution. Baseband unit 904 further includes a receiving component 930, a communication manager 932, and a transmitting component 934. Communication manager 932 includes one or more of the illustrated components. Components within communication manager 932 may be stored in computer-readable medium / memory and / or configured as hardware within baseband unit 904. The baseband unit 904 may be a component of the device 310 / 450 and may include memory 360 / 376 and / or at least one of the following: TX processor 316 / 368, RX processor 356 / 370, and controller / processor 359 / 375.

[0084] Communication manager 932 includes determining component 942, which can reserve one or more sidelink resources for sidelink transmission, the one or more sidelink resources being associated with one or more subchannels in one or more time slots, for example, as in combination Figure 8As described in 802. The communication manager 932 further includes a reservation component 944 that can transmit a sidelink resource reservation for reserving the one or more sidelink resources, the sidelink resource reservation including an indication of the association of the sidelink resource reservation with a wireless device that reduces bandwidth, for example, as in conjunction with... Figure 8 As described in 804.

[0085] The device may include execution Figure 8 The additional components of each block of the algorithm in the aforementioned flowchart. Thus, Figure 8 Each block in the aforementioned flowchart can be executed by a component, and the device may include one or more of those components. These components may be one or more hardware components specifically configured to execute the process / algorithm, implemented by a processor configured to execute the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0086] In one configuration, device 902, and particularly baseband unit 904, includes means for reserving one or more sidelink resources for sidelink transmission, the one or more sidelink resources being associated with one or more subchannels in one or more time slots. Baseband unit 904 may further include means for transmitting a sidelink resource reservation for reserving the one or more sidelink resources, the sidelink resource reservation including an indication of the association of the sidelink resource reservation with the reduced bandwidth wireless device. In some aspects, baseband unit 904 may further include means for receiving sidelink frequency resource assignments based on a plurality of subchannels in a resource pool.

[0087] The aforementioned apparatus may be one or more of the aforementioned components in device 902 configured to perform the functions described therein. As described above, device 902 may include TX processor 316 / 368, RX processor 356 / 370, and controller / processor 359 / 375. Thus, in one configuration, the aforementioned apparatus may be TX processor 316 / 368, RX processor 356 / 370, and controller / processor 359 / 375 configured to perform the functions described therein.

[0088] Figure 10 This is a flowchart 1000 of a wireless communication method. The method can be performed by a wireless device that does not reduce bandwidth (e.g., UE104, UE408, device 1102).

[0089] At 1002, the radio device can receive a sidelink resource reservation associated with an indication that the sidelink resource reservation is associated with a radio device with reduced bandwidth. This sidelink resource reservation can reserve a set of resources for sidelink transmissions from the radio device with reduced bandwidth. For example, the UE can receive a sidelink resource reservation 706 associated with an indication that this sidelink resource reservation 706 is associated with a radio device with reduced bandwidth. For example, 1002 can be... Figure 11 The retention processing component 1142 is executed.

[0090] At 1004, the radio device can exclude the set of resources from the available candidate resources based on this indication. For example, the UE can exclude the resources indicated in reservation 706 from its candidate resources. In some aspects, exclusion at 1004 can be... Figure 11 The exclusion component 1144 performs the exclusion. In some aspects, exclusion may be based on a packet priority lower than a packet priority threshold for the non-bandwidth-reduced wireless device. In some aspects, exclusion may be independent of the packet priority for the non-bandwidth-reduced wireless device. For example, exclusion may be performed regardless of packet priority. In some aspects, priority may be assigned to sidelink transmissions from the bandwidth-reduced wireless device. In some aspects, the sidelink transmission from the bandwidth-reduced wireless device may be a lightweight transmission or an ultra-lightweight transmission. In some aspects, the priority may differ from the packet priority indicated in the SCI of the sidelink transmission. In some aspects, a first RSRP threshold may be configured for bandwidth-reduced wireless devices and a second RSRP threshold may be configured for non-bandwidth-reduced wireless devices.

[0091] Figure 11Figure 1100 illustrates an example of the hardware implementation of device 1102. Device 1102 is a wireless device and includes a baseband unit 1104. The baseband unit 1104 can communicate with UE 104 via a cellular RF transceiver. The baseband unit 1104 may include computer-readable media / memory. The baseband unit 1104 is responsible for general processing, including the execution of software stored on the computer-readable media / memory. When executed by the baseband unit 1104, the software causes the baseband unit 1104 to perform the various functions described above. The computer-readable media / memory may also be used to store data manipulated by the baseband unit 1104 during software execution. The baseband unit 1104 further includes a receiving component 1130, a communication manager 1132, and a transmitting component 1134. The communication manager 1132 includes the one or more of the illustrated components. The components within the communication manager 1132 may be stored in computer-readable media / memory and / or configured as hardware within the baseband unit 1104. The baseband unit 1104 may be a component of the device 310 / 450 and may include memory 360 / 376 and / or at least one of the following: TX processor 316 / 368, RX processor 356 / 370, and controller / processor 359 / 375.

[0092] Communication manager 1132 includes a reservation processing component 1142 that receives a sidelink resource reservation associated with an indication related to a wireless device with reduced bandwidth, the sidelink resource reservation reserving a set of resources for sidelink transmissions from the wireless device with reduced bandwidth, for example, as in combination with Figure 10 As described in 1002. The communication manager 1132 further includes an exclusion component 1144 that, based on the instruction, excludes the set of resources from the pool of candidate resources, for example, as in combination with... Figure 10 As described in 1004.

[0093] The device may include execution Figure 10 The additional components of each block of the algorithm in the aforementioned flowchart. Thus, Figure 10 Each block in the aforementioned flowchart can be executed by a component, and the device may include one or more of those components. These components may be one or more hardware components specifically configured to execute the process / algorithm, implemented by a processor configured to execute the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0094] In one configuration, device 1102, and in particular baseband unit 1104, includes means for receiving a sidelink resource reservation associated with an indication of sidelink resource reservation and a reduced bandwidth wireless device, the sidelink resource reservation reserving a set of resources for sidelink transmissions from the reduced bandwidth wireless device. Baseband unit 1104 may further include means for excluding the set of resources from available candidate resources based on the indication.

[0095] The aforementioned apparatus may be one or more of the aforementioned components in device 1102 configured to perform the functions described therein. As described above, device 1102 may include TX processor 316 / 368, RX processor 356 / 370, and controller / processor 359 / 375. Thus, in one configuration, the aforementioned apparatus may be TX processor 316 / 368, RX processor 356 / 370, and controller / processor 359 / 375 configured to perform the functions described therein.

[0096] It should be understood that the specific order or hierarchy of the boxes in the disclosed process / flowcharts is an explanation of exemplary methods. It should be understood that the specific order or hierarchy of the boxes in these process / flowcharts can be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims present the elements of the various boxes in an exemplary order and are not intended to be limited to the specific order or hierarchy presented.

[0097] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will readily be understood by those skilled in the art, and the universal principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be granted the full scope consistent with the language of the claims, wherein references to the singular form of an element, unless specifically stated otherwise, are not intended to mean “one and only one,” but rather “one or more.” Terms such as “if,” “when,” and “at the time of” should be interpreted as meaning “under this condition,” rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., “when”) do not imply an immediate action in response to the occurrence of an action or during the occurrence of an action, but only imply that an action will occur when a condition is met, without requiring a specific or immediate temporal constraint for the action to occur. The term “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as superior to or overriding other aspects. Unless specifically stated otherwise, the term “some / a” refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, and may include multiple A, multiple B, or multiple C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more members of A, B, or C. Elements of all aspects described throughout this disclosure that are presently or hereafter known to those skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended as a donation to the public, whether or not such disclosure is explicitly stated in the claims. Terms such as “module,” “mechanism,” “element,” and “device” are not necessarily substitutes for the term “apparatus.” Thus, no claim element should be interpreted as an apparatus plus a function unless the element is explicitly stated using the phrase “apparatus for…”.

[0098] The following aspects are illustrative only and may be combined with other aspects or teachings described herein without limitation.

[0099] Aspect 1 is an apparatus for wireless communication at a bandwidth-reduced wireless device, comprising: a memory; and at least one processor coupled to the memory, configured to: reserve one or more sidelink resources for sidelink transmission, the one or more sidelink resources being associated with one or more subchannels in one or more time slots; and transmit a sidelink resource reservation for reserving the one or more sidelink resources, the sidelink resource reservation including an indication of the sidelink resource reservation being associated with a bandwidth-reduced wireless device.

[0100] Aspect 2 is an apparatus of aspect 1, wherein, in order to transmit the sidelink resource reservation, the at least one processor coupled to the memory is configured to signal or broadcast the sidelink resource reservation.

[0101] Aspect 3 is a device of any of Aspects 1-2, wherein the instruction is associated with SCI, and wherein the instruction is transmitted via PSCCH, first-stage SCI, second-stage SCI, or MAC CE.

[0102] Aspect 4 is an apparatus of any one of Aspects 1-3, wherein the one or more sub-channels in the one or more time slots are associated with a resource pool.

[0103] Aspect 5 is an apparatus of any one of Aspects 1-4, wherein the resource pool is associated with one or more wireless devices having reduced bandwidth, including the reduced bandwidth wireless device, and the resource pool is not shared with one or more non-reduced bandwidth wireless devices.

[0104] Aspect 6 is an apparatus of any one of Aspects 1-4, wherein the resource pool is shared with one or more non-bandwidth-reduced wireless devices and one or more wireless devices with reduced bandwidth that include these bandwidth-reduced wireless devices, and wherein the bandwidth-reduced wireless devices are configured to use a portion of the bandwidth of the resource pool.

[0105] Aspect 7 is an apparatus of any one of aspects 1-4 or 6, wherein this aspect is defined based on the one or more sub-channels.

[0106] Aspect 8 is an apparatus of any one of Aspects 1-7, wherein the resource pool is associated with a second indication indicating whether the one or more sub-channels are based on a sidelink resource pool or a different resource pool.

[0107] Aspect 9 is an apparatus of any one of Aspects 1-8, wherein the one or more sub-channels are based on the different resource pools, and wherein the indication further indicates the starting point of a first sub-channel for the sidelink resource pool, the size of the sub-channels of the sidelink resource pool, and the number of sub-channels of the resource pool configured for the sidelink resource pool.

[0108] Aspect 10 is an apparatus of any of Aspects 6-9, wherein the bandwidth-reduced wireless device is assigned a sub-channel as bandwidth.

[0109] Aspect 11 is an apparatus of any of Aspects 1-10, wherein each resource pool for one or more wireless devices is divided into a plurality of non-overlapping subbands, each non-overlapping subband comprising a coherent group of subchannels.

[0110] Aspect 12 is an apparatus of any one of aspects 1-11, wherein the bandwidth-reduced wireless device is configured to use a single non-overlapping subband of the plurality of non-overlapping subbands.

[0111] Aspect 13 is an apparatus of any one of Aspects 1-12, wherein the plurality of non-overlapping subbands are defined and configured, and wherein each sidelink control information (SCI) from a non-bandwidth-reduced wireless device is within one of the plurality of non-overlapping subbands.

[0112] Aspect 14 is an apparatus of any one of aspects 1-12, wherein the plurality of non-overlapping subbands are not defined and are not configured.

[0113] Aspect 15 is an apparatus of any one of aspects 1-14, further comprising a transceiver coupled to the at least one processor.

[0114] Aspect 16 is an apparatus for wireless communication at a non-reduced bandwidth wireless device, comprising: a memory; and at least one processor coupled to the memory, configured to: receive a sidelink resource reservation associated with an indication relating to a sidelink resource reservation and a reduced bandwidth wireless device, the sidelink resource reservation reserving a set of resources for sidelink transmissions from the reduced bandwidth wireless device; and exclude the set of resources from available candidate resources based on the indication.

[0115] Aspect 17 is an apparatus of aspect 16, wherein priority is assigned to this side link transmission from the reduced bandwidth wireless device.

[0116] Aspect 18 is an apparatus of any of Aspects 16-17, wherein the priority is different from the packet priority indicated in the SCI associated with the side link transmission.

[0117] Aspect 19 is an apparatus of any one of Aspects 16-18, wherein a first reference signal received power (RSRP) threshold is configured for the reduced bandwidth wireless device, and a second RSRP threshold is configured for the reduced bandwidth wireless device.

[0118] Aspect 20 is an apparatus of any one of aspects 16-19, wherein the instruction to reserve the side link resources associated with the reduced bandwidth wireless device is received from the reduced bandwidth wireless device.

[0119] Aspect 21 is an apparatus of any of Aspects 16-20, wherein the excluded resource set is based on a packet priority for the wireless device that is lower than a packet priority threshold.

[0120] Aspect 22 is an apparatus of any of Aspects 16-20, wherein the excluded resource set is independent of the packet priority for the reduced bandwidth wireless device.

[0121] Aspect 23 is an apparatus of any one of aspects 16-22, further comprising a transceiver coupled to the at least one processor.

[0122] Aspect 24 is a wireless communication method for implementing any one of aspects 1 to 15.

[0123] Aspect 25 is an apparatus for wireless communication, including means for implementing any one of aspects 1 to 15.

[0124] Aspect 26 is a computer-readable medium storing computer-executable code, wherein when executed by a processor, the processor enables the processor to implement any one of aspects 1 to 15.

[0125] Aspect 27 is a wireless communication method for implementing any one of aspects 16 to 24.

[0126] Aspect 28 is an apparatus for wireless communication, including means for implementing any one of aspects 16 to 24.

[0127] Aspect 29 is a computer-readable medium storing computer-executable code, wherein when executed by a processor, the processor enables the processor to implement any one of aspects 16 to 24.

Claims

1. An apparatus for wireless communication at a wireless device with reduced bandwidth, comprising: Memory; as well as At least one processor, the at least one processor being coupled to the memory and configured to: One or more sidelink resources are reserved for sidelink transmission, and the one or more sidelink resources are associated with one or more subchannels in one or more time slots; as well as The transmission reserves sidelink resources, including an indication of the sidelink resource reservation associated with the reduced bandwidth wireless device.

2. The apparatus of claim 1, wherein, in order to transmit the sidelink resource reservation, the at least one processor coupled to the memory is configured to: signal the sidelink resource reservation or broadcast the sidelink resource reservation.

3. The apparatus of claim 1, wherein the indication is associated with side link control information (SCI), and wherein the indication is transmitted via physical side link control channel (PSCCH), first-stage SCI, second-stage SCI, or media access control (MAC) control element (CE).

4. The apparatus of claim 1, wherein the one or more sub-channels in the one or more time slots are associated with a resource pool.

5. The apparatus of claim 4, wherein the resource pool is associated with one or more wireless devices having reduced bandwidth, including the reduced bandwidth wireless device, and the resource pool is not shared with one or more non-reduced bandwidth wireless devices.

6. The apparatus of claim 4, wherein the resource pool is shared with one or more non-bandwidth-reduced wireless devices and one or more wireless devices having reduced bandwidth, including the bandwidth-reduced wireless devices, and wherein the bandwidth-reduced wireless devices are configured to use a portion of the bandwidth of the resource pool.

7. The apparatus of claim 6, wherein the portion is defined based on the one or more sub-channels.

8. The apparatus of claim 6, wherein the resource pool is associated with a second indication indicating whether the one or more sub-channels are based on a sidelink resource pool or a different resource pool.

9. The apparatus of claim 8, wherein the one or more sub-channels are based on the different resource pools, and wherein the indication further indicates the starting point of a first sub-channel for the sidelink resource pool, the size of the sub-channels of the sidelink resource pool, and the number of sub-channels of the resource pool configured for the sidelink resource pool.

10. The apparatus of claim 6, wherein the bandwidth-reduced wireless device is assigned a sub-channel as bandwidth.

11. The apparatus of claim 1, wherein each resource pool for one or more wireless devices is divided into a plurality of non-overlapping subbands, each non-overlapping subband comprising a group of coherent subchannels.

12. The apparatus of claim 11, wherein the bandwidth-reduced wireless device is configured to use a single non-overlapping subband of the plurality of non-overlapping subbands.

13. The apparatus of claim 12, wherein the plurality of non-overlapping subbands are defined and configured, and wherein each sidelink control information (SCI) from a non-bandwidth-reduced wireless device is within one of the plurality of non-overlapping subbands.

14. The apparatus of claim 12, wherein the plurality of non-overlapping subbands are not defined and are not configured.

15. The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor.

16. An apparatus for wireless communication at a wireless device without reducing bandwidth, comprising: Memory; as well as At least one processor, the at least one processor being coupled to the memory and configured to: Receive sidelink resource reservation, which is associated with an indication that the sidelink resource reservation is associated with a wireless device with reduced bandwidth, the sidelink resource reservation reserving a set of resources for sidelink transmissions from the wireless device with reduced bandwidth; as well as The resource set is excluded from the available candidate resources based on the indicated instruction.

17. The apparatus of claim 16, wherein priority is assigned to the sidelink transmission from the reduced bandwidth wireless device.

18. The apparatus of claim 17, wherein the priority is different from the packet priority indicated in the sidelink control information (SCI) associated with the sidelink transmission.

19. The apparatus of claim 16, wherein a first reference signal received power (RSRP) threshold is configured for the reduced bandwidth wireless device, and a second RSRP threshold is configured for the reduced bandwidth wireless device.

20. The apparatus of claim 19, wherein the instruction to reserve the sidelink resources associated with the reduced bandwidth wireless device is received from the reduced bandwidth wireless device.

21. The apparatus of claim 16, wherein the excluded resource set is based on a packet priority for the wireless device that is lower than a packet priority threshold.

22. The apparatus of claim 16, wherein the excluded resource set is independent of the packet priority for the reduced bandwidth wireless device.

23. The apparatus of claim 16, further comprising a transceiver coupled to the at least one processor.

24. A method for wireless communication at a wireless device with reduced bandwidth, comprising: One or more sidelink resources are reserved for sidelink transmission, and the one or more sidelink resources are associated with one or more subchannels in one or more time slots; as well as The transmission reserves sidelink resources, including an indication of the sidelink resource reservation associated with the reduced bandwidth wireless device.

25. The method of claim 24, wherein transmitting the sidelink resource reservation further comprises signaling the sidelink resource reservation or broadcasting the sidelink resource reservation.

26. The method of claim 24, wherein the indication is associated with side link control information (SCI), and wherein the indication is transmitted via physical side link control channel (PSCCH), first-stage SCI, second-stage SCI, or media access control (MAC) control element (CE).

27. The method of claim 24, wherein the one or more sub-channels in the one or more time slots are associated with a resource pool.

28. The method of claim 27, wherein the resource pool is associated with one or more wireless devices having reduced bandwidth, including the wireless device, and the resource pool is not shared with one or more wireless devices that do not have reduced bandwidth.

29. A method for wireless communication at a wireless device without reducing bandwidth, comprising: Receive sidelink resource reservation, which is associated with an indication that the sidelink resource reservation is associated with a wireless device with reduced bandwidth, the sidelink resource reservation reserving a set of resources for sidelink transmissions from the wireless device with reduced bandwidth; as well as The resource set is excluded from the available candidate resources based on the indicated instruction.

30. The method of claim 29, wherein priority is assigned to the sidelink transmission from the reduced bandwidth wireless device.

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