Method for sidelink paging

Abstract

Various aspects provide a dedicated paging scheme for a vehicle UE to communicate with a pedestrian UE in a V2P communication, and also allow the pedestrian UE to monitor such V2P communication power efficiently. The vehicle UE provides an indication of the V2P communication to the pedestrian UE in a resource from a plurality of resources. The vehicle UE then transmits a message to the pedestrian UE based on the indication. The pedestrian UE monitors the plurality of resources for an indication of the V2P communication from the vehicle UE. The pedestrian UE receives the indication of the V2P communication. The pedestrian UE then receives a message from the vehicle UE based on the indication.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Application S / N. 62 / 938,202, filed on November 20, 2019, entitled “Methods for Sidelink Paging,” and U.S. Patent Application No. 17 / 069,250, filed on October 13, 2020, entitled “METHODS FOR SIDELINK PAGING,” both of which are expressly incorporated herein by reference in their entirety.

[0003] background Technical Field

[0004] The present disclosure relates generally to communication systems, and more particularly to vehicle-to-pedestrian (V2P), vehicle-to-vehicle (V2V), vehicle-to-everything (V2X), or other device-to-device (D2D) communications.

[0005] introduction

[0006] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting 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.

[0007] These multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different wireless devices to communicate at city, country, region, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third 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. 5GNR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. Various aspects of wireless communication may include direct communication between devices, such as in V2X, V2V, and / or other D2D communications. There is a need to further improve V2X, V2V, and / or D2D technologies. These improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies.

[0008] Overview

[0009] A brief summary of one or more aspects is given below to provide a basic understanding of such aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical 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 a prelude to a more detailed description that will be presented later.

[0010] In one aspect of the present disclosure, a method, computer readable medium, and device for wireless communication at a first user equipment (UE) (e.g., a receiving device) are provided. The example device monitors a plurality of resources for an indication of V2P communication from a second UE. The example device receives an indication of V2P communication. The example device also receives a message from the second UE based on the indication.

[0011] In another aspect of the present disclosure, a method, computer-readable medium, and device for wireless communication at a first UE (e.g., a transmitting device) are provided. The example device provides an indication of V2P communication to a second UE in a resource from a plurality of resources. The example device also transmits a message to the second UE based on the indication.

[0012] To achieve the foregoing and related ends, the one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and drawings set forth in detail certain illustrative features of the one or more aspects. However, these features are merely indicative of several of the various ways in which the principles of the various aspects may be employed, and this description is intended to cover all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 Various example aspects of a sidelink slot structure are illustrated.

[0015] Figure 3 is a diagram illustrating an example of a first device and a second device involved in wireless communications based on, for example, V2P, V2V, V2X, and / or other device-to-device communications.

[0016] Figure 4 is an example diagram illustrating wireless communications between devices based on V2X / V2V / V2P / P2V / D2D communications.

[0017] Figure 5 is a diagram of an example of a paging indicator based scheme.

[0018] Figure 6 is a diagram of another example of a paging indicator based scheme.

[0019] Figure 7 is a diagram of another example of a paging indicator based scheme.

[0020] Figure 8 is a diagram of an example of a non-paging indicator based scheme.

[0021] Fig. 9 is a call flow diagram of an example communication flow between a transmitting device and a receiving device.

[0022] Fig.10 is a flow chart of a method of wireless communication of a recipient UE according to the teachings disclosed herein.

[0023] Fig.11 is a diagram illustrating an example of a hardware implementation for an example device according to the teachings disclosed herein.

[0024] Fig.12 is a flow chart of a method of wireless communication of a transmitting UE according to the teachings disclosed herein.

[0025] Fig.13 is a diagram illustrating an example of a hardware implementation for an example device according to the teachings disclosed herein.

[0026] Detailed Description

[0027] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may 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 may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid diluting such concepts.

[0028] Several aspects of telecommunication systems will now be presented with reference to various devices and methods. These devices and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "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.

[0029] 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, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gating logic, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout this disclosure. One or more processors in a processing system may execute software. Software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether it is described in software, firmware, middleware, microcode, hardware description languages, or other terms.

[0030] Accordingly, in one or more example embodiments, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, each function may be stored or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available medium that can be accessed by a computer. As an example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, a combination of the aforementioned types of computer-readable media, or any other medium that can be used to store instructions or data structures in the form of computer executable code that can be accessed by a computer.

[0031] Figure 1 is a diagram illustrating an example of a wireless communication system and access network 100 including a base station 102 / 180 and a UE 104 .

[0032] A vehicle-based communication device or UE may communicate with a pedestrian's communication device or UE using a side link or V2P communication. Such communication between a vehicle and a pedestrian may be important for safety (e.g., to prevent collisions). Therefore, it may be helpful for the vehicle UE to effectively page the pedestrian UE in order to communicate with the pedestrian to prevent such collisions. In addition, a paging mechanism that enables efficient power consumption of the pedestrian UE when monitoring such paging from the vehicle UE may contribute to battery consumption, since the pedestrian UE may have less available battery power than the vehicle UE. Therefore, the present disclosure provides a paging scheme for enabling a vehicle UE to communicate with a pedestrian UE in V2P communications, and allows pedestrian-based UEs to monitor such V2P communications efficiently. In various examples, a paging indicator-based scheme and a non-paging indicator-based scheme are provided.

[0033] Refer again Figure 1 In certain aspects, the UE 104 may include a V2P component 198 configured to provide an indication of V2P communication to a second UE in a resource from the plurality of resources. The example V2P component 198 may also be configured to receive an indication of V2P communication. The example V2P component 198 may also be configured to transmit a message to the second UE based on the indication.

[0034] Still refer to Figure 1 In certain aspects, the UE 104 may include a P2V component 199 configured to monitor the plurality of resources for an indication of V2P communication from a second UE. The example P2V component 199 may also be configured to receive a message from the second UE based on the indication.

[0035] Although the following description may provide examples regarding V2X / V2P / P2V / D2D communications in conjunction with 5G NR, the concepts described herein may be applicable to other similar areas such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0036] The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). A macro cell includes a base station. A small cell includes a femto cell, a pico cell, and a micro cell.

[0037] For example, a Uu interface can be used to establish a link between UE 104 and base station 102 or 180 as an access link. Other communications can be exchanged between wireless devices based on side links. For example, some UE 104 can use a device-to-device (D2D) communication link 158 to communicate with each other. In some examples, the D2D communication link 158 can use DL / UL WWAN spectrum. The D2D communication link 158 can use one or more side link channels, such as a physical side link broadcast channel (PSBCH), a physical side link discovery channel (PSDCH), a physical side link shared channel (PSSCH), and a physical side link control channel (PSCCH). D2D communication can be through a variety of wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0038] Some examples of sidelink communications may include vehicle-based communications from: vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I) (e.g., from a vehicle-based communication device to a road infrastructure node, such as a roadside unit (RSU)), vehicle-to-network (V2N) (e.g., from a vehicle-based communication device to one or more network nodes, such as a base station), vehicle-to-pedestrian (V2P), cellular vehicle-to-everything (CV2X), and / or combinations thereof and / or communications with other devices, which may be collectively referred to as vehicle-to-everything (V2X) communications. Sidelink communications may be based on V2X or other D2D communications, such as proximity services (ProSe), etc. In addition to the UE, sidelink communications may also be transmitted and received by other transmitting and receiving devices, such as a roadside unit (RSU) 107, etc. The PC5 interface may be used to exchange sidelink communications, such as in conjunction with Figure 2 Although the examples in Figure 2 The following description of an example time slot structure may provide examples for sidelink communications in conjunction with 5G NR, but the concepts described herein may be applicable to other similar areas such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0039] The base station 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). The base station 102 configured for 5G NR (collectively referred to as the Next Generation RAN (NG-RAN)) can interface with the core network 190 via a second backhaul link 184. Among other functions, the base station 102 can also perform one or more of the following functions: delivery of user data, radio channel encryption and decryption, 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, positioning, and delivery of alert messages. The base stations 102 may communicate with each other directly or indirectly (eg, through the EPC 160 or the core network 190) over a third backhaul link 134 (eg, an X2 interface). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 may be wired or wireless.

[0040] Base stations 102 may communicate wirelessly with UEs 104. Each base station 102 may provide communication coverage for a respective geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' may have a coverage area 110' that overlaps with the coverage area 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. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). A communication link 120 between a base station 102 and a UE 104 may include an uplink (UL) (also referred to as a reverse link) transmission from the UE 104 to the base station 102 and / or a downlink (DL) (also referred to as a forward link) transmission from the base station 102 to the UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links may be over one or more carriers. For each carrier allocated in a carrier aggregation of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.) bandwidth. 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). The component carrier may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell), and the secondary component carrier may be referred to as a secondary cell (SCell).

[0041] The wireless communication system may further include a Wi-Fi access point (AP) 150 in communication with a Wi-Fi station (STA) 152 via a communication link 154, e.g., in a 5 GHz unlicensed spectrum, etc. When communicating in an unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) prior to communication to determine whether the channel is available.

[0042] The small cell 102' may operate in a licensed and / or unlicensed spectrum. When operating in an unlicensed spectrum, the small cell 102' may employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as used by the Wi-Fi AP 150. The small cell 102' employing NR in the unlicensed spectrum may boost the coverage of the access network and / or increase the capacity of the access network.

[0043] 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 identified as frequency range designations FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). Frequencies between FR1 and FR2 are typically referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is typically (interchangeably) referred to as the “sub-6 GHz” band in various documents and articles. Similar naming issues sometimes arise with respect to FR2, which is typically (interchangeably) referred to as the “millimeter wave” band in various documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0044] In view of the above aspects, unless otherwise specifically stated, it should be understood that if used in this document, the term sub-"6GHz" and the like can broadly refer to frequencies that can be less than 6GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if used in this document, the term "millimeter wave" and the like can broadly refer to frequencies that can include mid-band frequencies, can be within FR2, or can be within the EHF band.

[0045] Whether a small cell 102' or a large cell (e.g., a macro base station), the base station 102 may include and / or be referred to as an eNB, a gB node (gNB), or another type of base station. Some base stations (such as gNB 180) may operate in the traditional sub-6 GHz spectrum, in 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. Similarly, beamforming may be applied to sidelink communications between, for example, UEs.

[0046] Devices can use beamforming to transmit and receive communications. For example, Figure 1It is illustrated that the base station 180 may transmit a beamformed signal to the UE 104 in one or more transmit directions 182'. The UE 104 may receive the beamformed signal from the base station 180 in one or more receive directions 182". The UE 104 may also transmit a beamformed signal to the base station 180 in one or more transmit directions. The base station 180 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 180 / UE 104 may perform beam training to determine the best receive direction and transmit direction for each of the base station 180 / UE 104. The transmit direction and receive direction of the base station 180 may be the same or may be different. The transmit direction and receive direction of the UE 104 may be the same or may be different. Although this example is described with respect to the base station 180 and the UE 104, various aspects of beamforming may be similarly applied by the UE 104 or RSU 107 to communicate with another UE 104 or RSU 107, such as based on V2X, V2V, or D2D communication.

[0047] The EPC 160 may include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 may be in communication with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. In general, the MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are delivered through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation and other functions. The PDN gateway 172 and the BM-SC 170 are connected to IP services 176. The IP services 176 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and may be used to schedule MBMS transmissions. The MBMS gateway 168 may be used to distribute MBMS traffic to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area that broadcasts a specific service, and may be responsible for session management (start / stop) and for collecting eMBMS-related charging information.

[0048] The core network 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 may be in communication with a unified data management (UDM) 196. The AMF 192 is a control node that handles signaling between the UE 104 and the core network 190. In general, the AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are delivered through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 197. The IP service 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a packet switching (PS) streaming (PSS) service, and / or other IP services.

[0049] A base station may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmission reception point (TRP), or some other suitable term. Base station 102 provides an access point to EPC 160 or core network 190 for UE 104. Examples of UE 104 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet device, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a health care device, an implant, a sensor / actuator, a display, or any other similar functional device. Some UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0050] Figure 2Example diagrams 200 and 210 are illustrated, which illustrate example time slot structures that can be used for side link communications (e.g., between UE 104, RSU 107, etc.). The time slot structure can be within a 5G / NR frame structure. Although the following description may focus on 5GNR, the concepts described herein may be applicable to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies. This is just an example, and other wireless communication technologies may have different frame structures and / or different channels for side link communications. A frame (10ms) may be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include a mini-time slot, 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, and for time slot configuration 1, each time slot may include 7 symbols. Diagram 200 illustrates a single time slot transmission, which may correspond to a 0.5 ms transmission time interval (TTI), for example. Diagram 210 illustrates example 2 time slot aggregation, for example, aggregation of two 0.5 ms TTIs. Diagram 200 illustrates a single RB, while diagram 210 illustrates N RBs. In diagram 210, the 10 RBs used for control are merely an example. The number of RBs may be different.

[0051] A resource grid may be used to represent the frame structure. Each time slot may include a resource block (RB) (also called a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a number of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme. Figure 2 As illustrated in , some REs may include control information, for example, together with a demodulation RS (DMRS). Figure 2 It is also illustrated that the symbol(s) may include CSI-RS. Figure 2A symbol dedicated to DMRS or CSI-RS in indicates that the symbol includes DMRS or CSI-RS RE. Such a symbol may also include REs containing data. For example, if the number of ports of DMRS or CSI-RS is 1 and a comb-2 mode is used for DMRS / CSI-RS, half of the REs may include the RS, and the other half of the REs may include data. The CSI-RS resource may start at any symbol of the time slot and may occupy 1, 2, or 4 symbols, depending on the number of ports configured. The CSI-RS may be periodic, semi-persistent, or aperiodic (e.g., triggered based on control information). For time / frequency tracking, the CSI-RS may be periodic or aperiodic. The CSI-RS may be transmitted in bursts of two or four symbols spread across one or two time slots. The control information may include sidelink control information (SCI). At least one symbol may be used for feedback, as described herein. The symbols before and / or after the feedback may be used to switch between data reception and feedback transmission. Although symbol 12 is illustrated as being used for data, it may instead be a gap symbol to enable turnaround for feedback in symbol 13. Another symbol (e.g., at the end of a slot) may be used as a gap. The gap enables the device to switch from operating as a transmitting device to preparing to operate as a receiving device (e.g., in a subsequent slot). As illustrated, data may be transmitted in the remaining REs. The data may include data messages as described herein. The location of any of the SCI, feedback, and LBT symbols may be the same as Figure 2 Different from the example illustrated in , multiple time slots can be grouped together. Figure 2 An example aggregation of two time slots is also illustrated. The number of time slots aggregated may also be greater than two. When time slots are aggregated, the symbols and / or gap symbols used for feedback may be different from the symbols and / or gap symbols used for feedback for a single time slot. Although feedback is not illustrated for this aggregation example, the symbol(s) in a multi-slot aggregation may also be allocated for feedback, as illustrated in the one time slot example.

[0052] Figure 3 3 is a block diagram of a first wireless communication device 310 in communication with a second wireless communication device 350 based on a side link. In some examples, the devices 310 and 350 may communicate based on V2X or other D2D communications. The communication may be based on a side link using a PC5 interface. The 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 a radio resource control (RRC) layer, and layer 2 includes a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a media access control (MAC) layer.

[0053] The transmit (TX) processor 316 and the 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) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles 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 coded 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., pilot) in the time domain and / or frequency domain, and then combined together 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. Channel estimates from channel estimator 374 can be used to determine coding and modulation schemes and for spatial processing. The channel estimates can be derived from reference signals 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 modulate an RF carrier with a corresponding individual spatial stream for transmission.

[0054] At the device 350, each receiver 354RX receives a signal through its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for the device 350. If there are multiple spatial streams destined for the device 350, they can be combined into a single OFDM symbol stream by the RX processor 356. The RX processor 356 then transforms the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier and the reference signal are recovered and demodulated by determining the signal constellation point most likely transmitted by the device 310. These soft decisions can be based on the channel estimates calculated by the channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted on the physical channel by device 310. These data and control signals are then provided to controller / processor 359 which implements layer 3 and layer 2 functionality.

[0055] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer-readable medium. The controller / processor 359 may provide demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between transport and logical channels. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0056] Similar to the functionality described in conjunction with transmissions performed by device 310, the controller / processor 359 may 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 (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with delivery of upper layer PDUs, error correction through 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 of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0057] Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the device 310 may be used by a TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a corresponding individual spatial stream for transmission.

[0058] The transmission is processed at device 310 in a manner similar to that described in conjunction with the receiver functionality at device 350. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to a RX processor 370.

[0059] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer-readable medium. The controller / processor 375 provides demultiplexing, packet reassembly, decryption, header decompression, control signal processing between transport and logical channels. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0060] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359, and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to communicate with Figure 1 The V2P component 198 and / or the P2V component 199 perform various aspects in combination.

[0061] Figure 4 An example 400 of wireless communication between devices based on a side link, such as V2X / V2V / V2P / P2V / D2D communication, is illustrated. The communication may be based on a combination of Figure 2 The time slot structure of each aspect described. For example, the transmitting first UE 402 may transmit a transmission 414 (e.g., including a control channel and / or a corresponding data channel), which may be received by the receiving UEs 404, 406, 408, 410, 412. 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 transmission on occupied resources during data transmission. The number of TTIs and RBs that the data transmission will occupy may be indicated in a control message from the transmitting device. In addition to being able to operate as a receiving device, UEs 402, 404, 406, 408, 410, 412 may also each be able to operate as a transmitting device. In the illustrated example, UE 406 is illustrated as a transmitting transmission 416 and UE 408 is illustrated as a transmitting transmission 420. In addition, UE 410 is illustrated as a transmitting transmission 422 and UE 412 is illustrated as a transmitting transmission 424. Transmissions 414, 416, 420, 422, 424 may be broadcast or multicast to nearby devices. For example, a first UE 402 may transmit communications intended to be received by other UEs within range 401 of the first UE 402. Additionally / alternatively, an RSU 407 may receive communications 418 from and / or transmit communications 418 to UEs 402, 404, 406, 408, 410, 412.

[0062] Figure 4 The example UEs 402, 404, 406, 408 and / or the example RSU 407 may include V2P components, such as in conjunction with Figure 1 The example V2P components 198 are described. Pedestrian UEs 410, 412 may include P2V components, such as in conjunction with Figure 1 An example P2V component 199 is described.

[0063] As described above and Figure 4As explained in , a vehicle-based communication device or UE (e.g., a first vehicle UE 402) can communicate with a communication device or UE of a pedestrian 430 (e.g., pedestrian UEs 410, 412) using a side link or V2P communication. Such communication between a vehicle and a pedestrian may be important for safety. For example, a pedestrian 430 may cross a street in front of a first vehicle UE 402, causing the first vehicle UE 402 to be in the process of colliding with the pedestrian 430. Therefore, it may be helpful for the vehicle UE (e.g., the first vehicle UE 402) to efficiently page the pedestrian UE (e.g., pedestrian UE 410, 412) in order to communicate with the pedestrian 430 to prevent such a collision. In addition, when monitoring such paging from a vehicle UE, a paging mechanism that enables efficient power consumption of the pedestrian UE can help battery consumption because the pedestrian UE may have less available battery power than the vehicle UE.

[0064] The present disclosure provides a dedicated paging scheme for a vehicle UE to communicate with a pedestrian UE in a V2P communication, and allows a pedestrian-based UE to monitor such V2P communication in a battery-efficient manner. For example, the disclosed technology provides a paging indicator-based scheme in which multiple resources including a P2V resource portion, a paging indicator resource, and a V2P resource portion are time-division multiplexed with non-V2P / P2V resources. The vehicle UE can use the paging indicator resource to page the pedestrian UE. The paging indicator resource may include a shared paging resource pool for pedestrians adjacent to the vehicle UE, a paging resource that is specific to the pedestrian UE and is dedicated to a specific pedestrian UE, or a paging resource that is specific to the vehicle UE and is dedicated to a specific vehicle UE. The pedestrian UE monitors the indication (e.g., a paging indicator signal) in the paging indicator resource, and if an indication is received from the vehicle UE, the pedestrian UE can monitor the V2P communication from the vehicle UE in the V2P resource portion and receive such V2P communication from the vehicle UE. The pedestrian UE may also transmit data to the vehicle UE in the P2V resource portion. If no indication is received, the pedestrian UE may save power by refraining from monitoring V2P communications in the V2P resource portion. More details of the example scheme based on the paging indicator will be provided in conjunction with Figure 5 , 6 and / or 7 for description.

[0065] In an additional example, the disclosed technology provides a non-paging indicator-based scheme in which multiple resources including a P2V resource portion and a V2P resource portion are time-division multiplexed with non-V2P / P2V resources. Compared to the paging indicator-based scheme described above, no explicit paging indication resource is provided in this example. Instead, the vehicle UE sends information (e.g., SCI, etc.) to the pedestrian UE in the V2P resource portion. The pedestrian UE monitors the indication (e.g., information) in the V2P resource portion, and if an indication is received from the vehicle UE, the pedestrian UE can monitor the V2P communication from the vehicle UE in the next V2P resource portion or subsequent codewords of the same V2P resource portion and receive such V2P communication from the vehicle UE. The pedestrian UE can also transmit data to the vehicle UE in the P2V resource portion. If no indication is received (e.g., in the V2P resource portion), the pedestrian UE can save power by refraining from monitoring the V2P communication in the next (or same) V2P resource portion. In combination Figure 8 More details of the non-paging indicator based scheme are described below.

[0066] Figure 5 500 illustrates an example of a paging indicator based approach as presented herein. Figure 4 UEs 402, 404, 406, 408) may send a signal to one or more pedestrian UEs (e.g., Figure 4 The plurality of resources 502, 504 may be transmitted to pedestrian UEs 410, 412) and / or vehicle UEs (e.g., UEs 402, 404, 406, 408). Specifically, the resources 502 may include one or more resource pools dedicated to V2P and P2V communications between vehicle UEs and pedestrian UEs, while the resources 504 may include one or more separate resource pools for non-V2P / P2V communications. For example, the non-V2P / P2V resources 504 may be used for V2X communications (e.g., between vehicle UEs 402 and 404), or otherwise for communications not involving pedestrians. The resources 502, 504 may be time division multiplexed (TDM), such as Figure 5 Although Figure 5 Each pool of V2P / P2V resources 502 is illustrated as being separated by three pools of non-V2P / P2V resources 504, but any number of pools of V2P / P2V resources may be behind or before any number of pools of non-V2P / P2V resources.

[0067] Each V2P / P2V resource pool 502 may include separate resource portions for V2P / P2V communication and paging. For example, the V2P / P2V resources 502 may each include a P2V resource portion 506 for communication from a pedestrian UE to a vehicle UE, a paging indicator resource 508 for the pedestrian UE to monitor a paging indicator signal from the vehicle UE, and a V2P resource portion 510 for communication from the vehicle UE to the pedestrian UE. The P2V resource portion 506 and the V2P resource portion 510 may each span multiple resource blocks in one or more contiguous time slots (e.g., Figure 2 RBs and time slots in the examples 200 and 210). For example, the P2V resource portion 506 may span T P2V The time slot duration of V2P resource portion 510 may span T V2P The time slot duration is T P2V and T V2P Similarly, the paging indicator resource 508 may span multiple resource blocks in one or more time slots. Figure 5 As explained in the description, the combined time slot duration “T” for each pool of V2P / P2V resources 502 used in P2V / V2P communications over the PC5 interface PC5_ON (T PC5_开启 )” may be less than the slot duration “T PC5_OFF (T PC5_关闭 )". Alternatively, the combined time slot duration T PC5_ON can be compared with the time slot duration T PC5_OFF The same as or greater than the time slot duration T PC5_OFF .

[0068] exist Figure 5 In the example of FIG. 5 , the paging indicator resource 508 includes a message for the vehicle UE to page the vehicle range (eg, Figure 4A common resource pool for all pedestrian UEs within a range 401 of the vehicle UE. The common resource pool can be pre-configured by the network (e.g., by the EPC 160 and / or the core network 190) for all pedestrian UEs 410, 412. Any vehicle UE that intends to communicate with a pedestrian (e.g., when the vehicle detects a potential collision with the pedestrian 430) can page the pedestrian UE by transmitting a paging indicator signal in one or more resources of the common resource pool. For example, the vehicle UE can encrypt the paging indicator signal using the paging radio network temporary identifier (P-RNTI) or other identifier of the target pedestrian UE and transmit the paging indicator signal in the paging indicator resource 508. After sending the paging indicator signal, the vehicle UE can transmit a message (e.g., a request for the pedestrian to move or perform another action) to the pedestrian UE in the V2P resource portion 510.

[0069] The paging indicator signal may include a common sequence, such as a Zadoff-Chu sequence or other sequence, transmitted across one or more RBs in the time slot(s) of the paging indicator resource 508. The common sequence may be preconfigured by the network for all vehicle UEs. Thus, when paging any pedestrian UE using the common paging indicator resource, any vehicle UE may use the same preconfigured sequence. The paging indicator signal and / or the common paging indicator resource may also depend on the location (e.g., geographic or regional) of the paging vehicle UE and the paged pedestrian UE. For example, referring to Figure 4 If the transport UEs 402, 404, 406 are in one area and the transport UE 408 is in a different area, the network may configure the paging indicator resources 508 for the transport UE 408 to be different from the common paging resources for the transport UEs 402, 404, 406 (e.g., in duration, number of RBs, periodicity, etc.).

[0070] A pedestrian UE may monitor the paging indicator resources 508 (e.g., a shared resource pool) for a paging indicator signal from any vehicular UE. For example, each pedestrian UE may monitor the paging indicator resources 508 and decode any paging indicator signal in the paging indicator resources that is encrypted with an identifier of the pedestrian UE (e.g., a P-RNTI or other identifier). If a pedestrian UE detects a paging indicator signal in the shared resource pool that is directed from a vehicular UE to the pedestrian UE, the pedestrian UE may determine that a message from the vehicular UE may be received in the V2P resource portion 510, and may therefore monitor the resources in the V2P resource portion 510 for the message. Otherwise, the pedestrian UE may refrain from monitoring the V2P resource portion 510 for V2P communications. Thus, the pedestrian UE may benefit from power savings from discontinuous reception (DRX). For example, a pedestrian UE may monitor the paging indicator resources 508 for a period of time T when no paging is received in the paging indicator resources 508. V2P (or the subsequent duration T P2V ) and can sleep during the duration T when a page is received in the paging indicator resource 508 V2P (or duration T P2V For example, a pedestrian UE may sleep during the V2P resource portion and / or the P2V resource portion when there is no or little traffic nearby, or when the pedestrian UE is not otherwise being paged.

[0071] therefore, Figure 5 The example allows the paging indicator resource 508 to be used in common by the vehicle UEs to page all pedestrian UEs with a common pre-configured sequence. Thus, paging can be accomplished with minimal differences in configuration between multiple UEs. In addition, even if multiple vehicle UEs page pedestrian UEs at the same time, by using the same sequence, different paging indicator signals can be coherently added together, thereby preventing unnecessary signal loss.

[0072] Figure 6 A diagram 600 illustrates another example of a paging indicator based approach as presented herein. Figure 5 As described, a vehicle UE (eg, Figure 4 The vehicle UE 402, 404, 406, 408) can send a signal to one or more pedestrian UEs (e.g., Figure 4 Pedestrian UEs 410, 412) and / or vehicle UEs (e.g., vehicle UEs 402, 404, 406, 408) transmit multiple resources (e.g., resources 502, 504), including one or more resource pools dedicated to V2P and P2V communications between vehicle UEs and pedestrian UEs. In addition, as described above with respect to Figure 5 As described, Figure 6 Each resource pool of may include separate resource portions for V2P / P2V communication and paging, including a P2V resource portion 602 for communication from a pedestrian UE to a vehicle UE, a paging indicator resource 604 for a pedestrian UE to monitor a paging indicator signal from a vehicle UE, and a V2P resource portion 606 for communication from a vehicle UE to a pedestrian UE. The P2V resource portion 602 and the V2P resource portion 606 may each span multiple resource blocks in one or more contiguous time slots (e.g., Figure 2 RBs and time slots in the examples 200, 210). Similarly, the paging indicator resources 604 can span one or more resource blocks in one or more time slots. The size of the paging indicator resource 604 pool can be preconfigured by the network (e.g., by EPC 160 and / or core network 190).

[0073] However, with Figure 5 The example is different. Figure 6 The paging indicator resource 604 includes a paging indicator resource for the vehicle UE to page the vehicle within the vehicle range (for example, Figure 4 Paging resources 608, 610 specific to pedestrian UEs for a particular pedestrian UE within the range 401. Figure 4 In an example of a first pedestrian UE-specific paging resource 608, the network may assign a first pedestrian UE 410 (e.g., P-UE 1), while a second pedestrian UE-specific paging resource 610 may be assigned by the network to a second pedestrian UE 412 (e.g., P-UE 2). For example, any vehicle UE that intends to communicate with a particular pedestrian (e.g., pedestrian UEs 410, 412) (e.g., when the vehicle is in a collision course with pedestrian 430) may page the pedestrian UE by transmitting a paging indicator signal in the corresponding pedestrian UE-specific paging resource 608, 610. Since the resources are specific to the pedestrian UE, the vehicle UE may not need to encrypt the paging indicator signal with the P-RNTI or other identifier of the target pedestrian UE, but may simply transmit the paging indicator signal in the corresponding pedestrian UE-specific paging resource 608, 610 in the paging indicator resource 604. After sending the paging indicator signal to a particular pedestrian UE, the vehicle UE may transmit a message in the V2P resource portion 606 to the pedestrian UE (eg, requesting the pedestrian to move or perform another action).

[0074] The pedestrian UE-specific paging resources 608, 610 may be based on the P2V resources 612, 614 in which the pedestrian UE 410, 412 transmits data to the vehicle UE. Figure 6, the paging resources 608, 610 that vary from pedestrian UE to pedestrian UE may be configured by the network (e.g., by EPC 160 and / or core network 190) or selected by the corresponding pedestrian UE to include the same subchannel(s) or subcarrier(s) as P2V resources 612, 614. P2V resources 612, 614 may be configured by the network and may indicate the symbols / time slots and subchannels in which pedestrian UEs may send data to vehicle UEs, respectively. For example, a first pedestrian UE 410 may be configured to transmit data in a P2V resource 612 spanning multiple symbols on one subchannel, while a second pedestrian UE 412 may be configured to transmit data in a P2V resource 614 spanning multiple symbols on another subchannel. Likewise, the first pedestrian UE 410 may be configured to monitor or select to monitor a paging indicator signal in a first pedestrian UE-specific paging resource 608 corresponding to a previous subchannel, and the second pedestrian UE 412 may be configured to select to monitor a paging indicator signal in a second pedestrian UE-specific paging resource 610 corresponding to a subsequent subchannel. Figure 6 The P2V resources 612, 614 and the pedestrian UE-specific paging resources 608, 610 are illustrated as being separated in both time and frequency, but the P2V resources 612, 614 and the pedestrian UE-specific paging resources 608, 610 may alternatively overlap (at least partially) in time or frequency.

[0075] The paging resources 608, 610 specific to pedestrian UEs may also be based on an identifier of the pedestrian UE. For example, the paging resources 608, 610 specific to pedestrian UEs may be configured by the network or selected by the corresponding pedestrian UE based on the P-RNTI or other identifier of the pedestrian UE and / or the number of physical resource blocks in each paging indicator resource 604 pool to include different start symbols and subchannels. For example, each paging resource 608, 610 specific to pedestrian UEs may be calculated based on Equation 1 (below).

[0076] Formula 1: P-UE ID mod N

[0077] In Formula 1, the variable "P-UE ID" refers to the identifier of the pedestrian UE, and the variable "N" refers to the number of physical resource blocks (PRBs) in the paging indicator resource 604 pool. Figure 4 , the first pedestrian UE 410 may have a different identifier (i.e., P-UE ID 1) than the second pedestrian UE 412 (i.e., P-UE ID 2), and therefore each pedestrian UE 410, 412 may be configured to monitor or select to monitor paging indicator signals in different pedestrian UE-specific paging resources 608, 610.

[0078] The vehicle UE may select a sequence (such as a Zadoff-Chu sequence or other sequence) for the paging indicator signal, which is transmitted in the paging resources 608, 610 that are specific to the pedestrian UE in the paging indicator resource 604 pool. The sequence may be a common sequence preconfigured by the network for all vehicle UEs. Therefore, when paging the corresponding pedestrian UE in the paging resources 608, 610 that are specific to the pedestrian UE, any vehicle UE may choose to use the same preconfigured sequence. Alternatively, the sequence may be a sequence that is specific to the vehicle UE. The sequence that is specific to the vehicle UE may be based on the identifier of the vehicle UE. For example, the sequence that is specific to the vehicle UE may be configured by the network or selected by the corresponding vehicle UE based on the RNTI or other identifier of the vehicle UE and / or the number of paging indicator sequences for the vehicle UE. For example, each sequence that is specific to the vehicle UE may be calculated based on Formula 2 (below).

[0079] Formula 2: V-UE ID mod K

[0080] In this formula, the variable "V-UE ID" refers to the identifier of the vehicle UE, and the variable "K" refers to the total number of paging indication sequences configured by the network. Figure 4 , the first vehicular UE 402 may have a different identifier (i.e., V-UE ID 1) than the other vehicular UEs 404, 406, 408, and therefore, the vehicular UEs 402, 404, 406, 408 may be configured to transmit or choose to transmit paging indicator signals in different sequences. As a result, pedestrian UEs receiving paging indicator signals from different vehicular UEs may identify each vehicular UE based on the sequence.

[0081] The pedestrian UEs may monitor their respective pedestrian UE-specific paging resources 608, 610 in the paging indicator resources 604 for paging indicator signals from any vehicular UEs. For example, each pedestrian UE may receive the paging indicator resources 604 and decode only any paging indicator signals in the pedestrian UE-specific paging resources 608, 610 configured for the respective pedestrian UE. If a pedestrian UE detects a paging indicator signal from a vehicular UE in the pedestrian UE-specific paging resources 608, 610 directed to the pedestrian UE, the pedestrian UE may determine that a message from the vehicular UE may be received in the corresponding resource of the V2P resource portion 606, and may therefore monitor the resources in the V2P resource portion 606 for the message. The resources monitored in the V2P resource portion 606 may be based on a subchannel of the P2V resources 612, 614 or an identifier of the pedestrian UE, and may similarly correspond to a time and frequency mapping of the pedestrian UE-specific paging resources 608, 610 in which the paging indicator signal is received. Otherwise, the pedestrian UE may refrain from monitoring the V2P resource portion 606 for V2P communications. Thus, the pedestrian UE may not only benefit from power savings from discontinuous reception (DRX), as described above with respect to Figure 5 As described, further power savings may also be benefited from by monitoring only its dedicated pedestrian UE-specific paging resources 608, 610 as opposed to monitoring the entire pool of paging indicator resources 604.

[0082] Figure 7 A diagram 700 illustrates another example of a paging indicator based approach as presented herein. Figure 5 As described, a vehicle UE (eg, Figure 4 The vehicle UE 402, 404, 406, 408) can transmit a plurality of resources (e.g., resources 502, 504) to one or more pedestrian UEs (e.g., pedestrian UE 410, 412) and / or vehicle UEs (e.g., vehicle UE 402, 404, 406, 408), including one or more resource pools dedicated to V2P and P2V communications between vehicle UEs and pedestrian UEs. In addition, as described above with respect to Figure 5 and Figure 6 As described, Figure 7Each resource pool of may include separate resource portions for V2P / P2V communication and paging, including a P2V resource portion 702 for communication from a pedestrian UE to a vehicle UE, a paging indicator resource 704 for a pedestrian UE to monitor a paging indicator signal from a vehicle UE, and a V2P resource portion 706 for communication from a vehicle UE to a pedestrian UE. The P2V resource portion 702 and the V2P resource portion 706 may each span multiple resource blocks in one or more contiguous time slots (e.g., Figure 2 200, 210). Similarly, the paging indicator resource 704 may span one or more resource blocks in one or more time slots. The size of the paging indicator resource 704 pool may be preconfigured by the network (e.g., by EPC 160 and / or core network 190).

[0083] However, with Figure 6 The example is different. Figure 7 The paging indicator resource 704 includes a paging indicator resource for the vehicle UE to page the vehicle range (eg, Figure 4 paging resources 708, 710, 712, 714 specific to vehicle UEs for any pedestrian UE within the range 401). Figure 4In the example of, a first paging resource 708 specific to a transport UE may be assigned by the network to a first transport UE 402 (e.g., V-UE 1), a second paging resource 710 specific to a transport UE may be assigned by the network to a second transport UE 404, a third paging resource 712 specific to a transport UE may be assigned by the network to a third transport UE 406, and a fourth paging resource 714 specific to a transport UE may be assigned by the network to a fourth transport UE 408. The paging resources 708, 710, 712, 714 specific to a transport UE may be specific to a specific UE or a specific group of UEs. For example, a single paging resource specific to a transport UE may be assigned to a single UE (e.g., the first transport UE 402) or a group of UEs (e.g., transport UEs 402, 404, 406, 408). For example, when the vehicle is in a collision course with the pedestrian 430, each vehicular UE that intends to communicate with the pedestrian UE (e.g., pedestrian UEs 410, 412) may page the pedestrian UE by transmitting a paging indicator signal in its corresponding vehicular UE-specific paging resources 708, 710, 712, 714. For example, the vehicular UE may encrypt the paging indicator signal with the P-RNTI or other identifier of the target pedestrian UE, and may transmit the paging indicator signal in the corresponding vehicular UE-specific paging resources 708, 710, 712, 714 of the vehicular UE in the paging indicator resource 704. After sending the paging indicator signal to a particular pedestrian UE, the vehicular UE may transmit a message to the pedestrian UE in the V2P resource portion 706 (e.g., requesting the pedestrian to move or perform another action).

[0084] The paging resources 708, 710, 712, 714 that are specific to a transport UE may also each be based on an identifier of the transport UE. For example, the paging resources 708, 710, 712, 714 that are specific to a transport UE may be selected by the corresponding transport UE (or configured by the network) based on the RNTI or other identifier of the transport UE and / or the number of physical resource blocks in each pool of paging indicator resources 704 to include different start symbols and subchannels. For example, each paging resource 708, 710, 712, 714 that is specific to a transport UE may be calculated based on Equation 3 (below).

[0085] Formula 3: V-UE ID mod N

[0086] In Equation 3, the variable "V-UE ID" refers to the identifier of the vehicle UE, and the variable "N" refers to the number of physical resource blocks (PRBs) in the paging indicator resource 704 pool. Figure 4, the first transport UE 402 may have a different identifier (i.e., V-UE ID 1) than the other transport UEs 404, 406, 408, and therefore, the respective transport UEs 402, 404, 406, 408 may choose to transmit the paging indicator signal in different transport UE-specific paging resources 708, 710, 712, 714. If the result of Equation 3 is the same for two different UEs, then the two different UEs may have the same UE-specific paging resources. Although Figure 7 Specific time-frequency allocations of the vehicular UE-specific paging resources 708 , 710 , 712 , 714 are illustrated, but the vehicular UE-specific paging resources may occur at other times or frequencies of the paging indicator resources 704 .

[0087] The pedestrian UE may monitor the vehicular UE-specific paging resources 708, 710, 712, 714 in the paging indicator resources 704 to look for a paging indicator signal from the corresponding vehicular UE. For example, each pedestrian UE may receive the paging indicator resources 704 and decode any paging indicator signal in the received paging indicator resources (e.g., by checking all possible vehicular UE-specific paging resources 708, 710, 712, 714). If the pedestrian UE detects a paging indicator signal from the vehicular UE directed to the pedestrian UE in the corresponding vehicular UE-specific paging resources 708, 710, 712, 714, the pedestrian UE may determine that a message from the vehicular UE may be received in the corresponding resource of the V2P resource portion 706, and may monitor the resources in the V2P resource portion 706 to look for the message. The resources monitored in the V2P resource portion 706 may be based on, for example, an identifier of the vehicular UE, and may similarly correspond to a time and frequency mapping of the vehicular UE-specific paging resources 708, 710, 712, 714 at which the paging indicator signal was received. Otherwise, the pedestrian UE may refrain from monitoring the V2P resource portion 706 for V2P communications. Thus, while each pedestrian UE monitors the entire pool of paging indicator resources 704 for paging indicator signals from any vehicular UE (with Figure 6 ), but pedestrian UEs can continue to benefit from the above Figure 5 Power savings from discontinuous reception (DRX) are described.

[0088] Figure 8 800 illustrates an example of a non-paging indicator based approach as presented herein. Figure 4 The vehicle UE 402, 404, 406, 408) can send a signal to one or more pedestrian UEs (e.g., Figure 4 The plurality of resources 802, 804 may be transmitted to pedestrian UEs 410, 412) and / or vehicle UEs (e.g., vehicle UEs 402, 404, 406, 408). Specifically, the resources 802 may include one or more resource pools dedicated to V2P and P2V communications between vehicle UEs and pedestrian UEs (e.g., V2P / P2V resources), and the resources 804 may include one or more separate resource pools for non-V2P / P2V communications (e.g., non-V2P / P2V resources). The resources 802, 804 may be time division multiplexed (TDM), such as Figure 8 Although Figure 8 Each pool of V2P / P2V resources 802 is illustrated as being separated by three pools of non-V2P / P2V resources 804, but any number of pools of V2P / P2V resources may be behind or before any number of pools of non-V2P / P2V resources.

[0089] Similar to Figure 5 In the example of , each V2P / P2V resource 802 pool may include separate resource portions for V2P / P2V communication and paging. For example, the V2P / P2V resources 802 may each include a P2V resource portion 806 for communication from a pedestrian UE to a vehicle UE, and a V2P resource portion 808 for communication from a vehicle UE to a pedestrian UE. Figure 8 The example illustrates that the P2V resource portion 806 is after the V2P resource portion 808, but in other examples, the sequence can be reversed. The P2V resource portion 806 and the V2P resource portion 808 can each have a plurality of resource blocks and a plurality of time slots (eg, Figure 2 RB and time slot in the examples 200, 210). For example, the P2V resource portion 806 may span T P2V The V2P resource portion 808 may span T V2P The time slot duration is T P2V and T V2P Can be the same or different. Figure 8 As explained in the description, the combined time slot duration “T PC5_ON " may be less than the slot duration "T" for the intermediate resource 804 pool used in non-P2V / V2P communications on the PC5 interface PC5_OFF Alternatively, the combined time slot duration T PC5_ON can be compared with the time slot duration T PC5_OFF The same as or greater than the time slot duration T PC5_OFF .

[0090] However, with Figure 5-7The example is different. Figure 8 The V2P / P2V resources 802 do not include a paging indicator resource for a pedestrian UE to monitor a paging indicator signal from a vehicle UE (eg, Figure 5 paging indicator resource 508 of the V2P resource portion 808). Instead, the vehicle UE pages the pedestrian UE in the V2P resource portion 808 itself, and the pedestrian UE monitors the V2P resource portion 808 for indications from the vehicle UE. For example, different vehicle UEs may send information to pedestrian UEs in different subchannels of the V2P resource portion 808, and the vehicle UE may transmit unicast messages based on the information, and the pedestrian UE may receive unicast messages based on the information. In one example, any vehicle UE may transmit paging information, sidelink control information (SCI), or other information in one or more symbols of a particular subchannel or particular multiple subchannels of the V2P resource portion 808, and any pedestrian UE may monitor different subchannels to find the information. Thus, the pedestrian UE may determine whether to expect to receive an upcoming unicast message (e.g., data) from the vehicle UE that is targeted to the pedestrian UE. For example, the information may schedule a unicast message in the V2P resource portion 808 or one or more subsequent symbols of the V2P resource portion 808 thereafter, and the vehicle UE may transmit the unicast message in a specific subchannel based on the schedule.

[0091] For example, when a vehicle detects a potential collision with pedestrian 430, any vehicle UE that intends to communicate with any pedestrian UE can page the pedestrian UE by transmitting information in one or more subchannels of the V2P resource portion 808. The vehicle UE can determine the subchannel(s) by sensing the V2P resource portion 808 to find available subchannels (e.g., subchannels that are not used by other vehicle UEs), and then selecting one or more subchannels from the available subchannels. For example, the vehicle UE can measure the energy of a subchannel in the V2P resource portion 808, and if the energy is less than a predefined threshold (indicating that the subchannel is not busy), the vehicle UE can identify the subchannel as an available candidate for sending information. The vehicle UE can then select one or more subchannels from the available candidates. Thereafter, the vehicle UE can encrypt the paging information, SCI, or other information with the RNTI or other identifier of the target pedestrian UE, and transmit the information in one or more symbols of the selected subchannel(s) of the V2P resource portion 808. After sending this information, the vehicular UE may transmit a message to the pedestrian UE (eg, requesting the pedestrian to move or perform another action) in a subsequent symbol of the V2P resource portion 808 or the next V2P resource portion 808 .

[0092] Any pedestrian UE may monitor the V2P resource portion 808 for information from any vehicle UE. For example, each pedestrian UE may receive the V2P resource portion 808 and decode information encrypted with an identifier (e.g., RNTI or other identifier) ​​of the pedestrian UE received in any subchannel from any vehicle UE. If a pedestrian UE detects information from a vehicle UE directed to the pedestrian UE in any subchannel, the pedestrian UE may determine that a message from the vehicle UE may be received in the V2P resource portion 808 or another V2P resource portion 808 (e.g., based on scheduling), and may then receive resources for the message in the corresponding (sub) channels of the V2P resource portion 808. The pedestrian UE may also transmit data to the corresponding vehicle UE in any subchannel of the P2V resource portion 806. Therefore, each pedestrian UE may receive unicast messages from any vehicle UE in any subchannel and transmit unicast messages to any vehicle UE in any subchannel.

[0093] therefore, Figure 8 The example allows the V2P resource portion 808 to be used by a vehicle UE to page or send messages to a pedestrian UE. Figure 8 The illustrated example may cause more problems for pedestrian UEs than Figure 5-7 The described example saves less power because compared to only monitoring Figure 5-7 Monitoring all subchannels of each V2P resource portion 808 can potentially use more power than monitoring the paging indicator resource 508, 604, 704 pool. Figure 5-7 Compared to the example, Figure 8 The example scheme saves resources because paging can be accomplished without the need for a separate resource pool dedicated to paging.

[0094] Fig. 9 Explained based on Figure 5-8 900 between an example transmitting device 902 and a receiving device 904. The communication may be based on V2P / P2V based communication directly from the transmitting device to the receiving device. For example, the transmitting device 902 may be a vehicle UE (e.g., Figure 4 404, 406, 408), and the receiving device 904 may be a pedestrian UE (e.g., Figure 4Alternatively, the transmitting device 902 may be a pedestrian UE (e.g., pedestrian UE 410, 412), and the receiving device 904 may be a vehicle UE (e.g., vehicle UE 402, 404, 406, 408). Communications transmitted from the devices 902, 904 may be broadcast and received by multiple receiving devices within range of a particular transmitting device, such as in combination with Figure 4 For example, the transmitting device 902 may include a paging indicator resource (see Figure 5-7 ) transmits an indication (such as a paging indicator signal) to multiple recipient devices 904, or in a V2P resource portion (see Figure 8 ) transmits information to multiple recipient devices 904.

[0095] In the illustrated example, at 906, the transmitting device 902 may select a sequence for the paging indicator signal. Figure 6 For example, a vehicle UE may select a sequence (such as a Zadoff-Chu sequence or other sequence) for a paging indicator signal, which is transmitted in a paging resource 608, 610 that is specific to a pedestrian UE in a pool of paging indicator resources 604. The sequence may be a common sequence preconfigured by the network for all vehicle UEs. Alternatively, the sequence may be a sequence that is specific to the vehicle UE. The sequence that is specific to the vehicle UE may be based on an identifier of the vehicle UE.

[0096] At block 902, the transmitting device 902 may determine a UE-specific paging resource associated with the transmitting device 902 for transmitting a paging indicator signal. Figure 7 For example, the transport UE may determine the transport UE-specific paging resources (e.g., transport UE-specific paging resources 708, 710, 712, 714) from the paging indicator resource pool 704. The transport UE may determine its transport UE-specific paging resources based on the identifier of the transport UE. For example, referring to Figure 4In an example of a first transport UE-specific paging resource 708, a first transport UE-specific paging resource 708 may be assigned by a network (e.g., EPC 160 and / or core network 190) to a first transport UE 402, a second transport UE-specific paging resource 710 may be assigned by the network to a second transport UE 404, a third transport UE-specific paging resource 712 may be assigned by the network to a third transport UE 406, and a fourth transport UE-specific paging resource 714 may be assigned by the network to a fourth transport UE 408. The transport UE-specific paging resources 708, 710, 712, 714 may be configured by the network based on the RNTI or other identifier of the transport UE and / or the number of physical resource blocks in each paging indicator resource 704 pool to include different starting symbols and subchannels.

[0097] The transmitting device 902 provides an indication 910 of a V2P communication received by the receiving device 904 in a resource from the plurality of resources. In one example, the indication 910 may be a paging indicator signal 912. For example, referring to Figure 5-7 In an example, a vehicle UE (e.g., vehicle UE 402, 404, 406, 408) can transmit multiple resources (e.g., resources 502, 504) to one or more pedestrian UEs (e.g., pedestrian UE 410, 412), including one or more resource pools dedicated to V2P and P2V communication between the vehicle UE and the pedestrian UE. Each resource pool may include separate resource portions for V2P / P2V communication and paging, including paging indicator resources 508, 604, 704 for pedestrian UEs to monitor paging indicator signals from the vehicle UE. In one example, the paging indicator resources 508 include a common resource pool, and the vehicle UE can page the pedestrian UE by transmitting a paging indicator signal 912 in one or more resources of the common resource pool. In another example, the paging indicator resources 604 include pedestrian UE-specific paging resources 608, 610, and the vehicular UE may page the pedestrian UE by transmitting a paging indicator signal 912 in the corresponding pedestrian UE-specific paging resources 608, 610. In a further example, the paging indicator resources 704 may include vehicular UE-specific paging resources 708, 710, 712, 714, and the vehicular UE may page the pedestrian UE by transmitting a paging indicator signal 912 in its corresponding vehicular UE-specific paging resources 708, 710, 712, 714.

[0098] In another example, the indication 910 may be information 914 provided to the recipient device 904 in a subchannel of the V2P resource portion. Figure 8In an example of, a vehicle UE (e.g., vehicle UE 402, 404, 406, 408) may transmit multiple resources (e.g., resources 802, 804) to one or more pedestrian UEs (e.g., pedestrian UE 410, 412), including one or more resource pools dedicated to V2P and P2V communications between the vehicle UE and the pedestrian UE. Each resource pool may include separate resource portions for V2P / P2V communication and paging, including a P2V resource portion 806 for communication from the pedestrian UE to the vehicle UE and a V2P resource portion 808 for communication from the vehicle UE to the pedestrian UE. The vehicle UE may send information 914 to the pedestrian UE in a subchannel of the V2P resource portion 808. As an example, the vehicle UE may transmit paging information, SCI, or other information in one or more symbols of a specific subchannel or specific multiple subchannels of the V2P resource portion 808.

[0099] At 916, the receiving device 904 monitors the plurality of resources for an indication of V2P communication from the transmitting device 902. In one example and with reference to Figure 5-7 In an example of , a pedestrian UE may monitor paging indicator resources 508, 604, 704 (e.g., a common resource pool, pedestrian UE-specific paging resources 608, 610, or vehicular UE-specific paging resources 708, 710, 712, 714) for a paging indicator signal 912 from any vehicular UE. For example, each pedestrian UE may receive the paging indicator resources 508, 604, 704 and decode any paging indicator signal in the common paging indicator resource that is encrypted with an identifier of the pedestrian UE (e.g., P-RNTI or other identifier), decode any paging indicator signal in a pedestrian UE-specific paging resource configured only for that pedestrian UE, or decode any paging indicator signal by checking all possible vehicular UE-specific paging resources. If a pedestrian UE detects a paging indicator signal in the resources directed from the vehicular UE to the pedestrian UE, the pedestrian UE may determine that a message from the vehicular UE may be received in the V2P resource portion 510, 606, 706 and may therefore monitor the resources in the V2P resource portion for the message.

[0100] In another example and with reference to Figure 8In an example of , a pedestrian UE may monitor the V2P resource portion 808 for information from any vehicular UE 914. For example, each pedestrian UE may receive the V2P resource portion 808 and decode information received in any subchannel from any vehicular UE that is encrypted with an identifier of the pedestrian UE (e.g., RNTI or other identifier). If a pedestrian UE detects information from a vehicular UE in any subchannel that is directed to the pedestrian UE, the pedestrian UE may determine that a message from the vehicular UE may be received in the V2P resource portion 808 or another V2P resource portion 808 (e.g., based on scheduling).

[0101] During monitoring, at 918, when the paging indicator signal is not within the paging indicator resource, the recipient device 904 may refrain from monitoring the V2P resource portion for V2P communications. Figure 5-7 For example, if the pedestrian UE fails to detect a paging indicator signal directed to the pedestrian UE from the vehicle UE in the paging indicator resources 508, 604, 704, the pedestrian UE may determine that it will not receive a message from the vehicle UE in the V2P resource portion 510, 606, 706, and may therefore refrain from monitoring the V2P resource portion for V2P communications. As an example, when no paging is received in the paging indicator resources, the pedestrian UE may V2P Hibernate during this time.

[0102] At 920, the transmitting device 902 may sense the V2P resource portion to find available subchannels, and at 922, the transmitting device 902 may identify a subchannel for providing information 914 from the available subchannels. Figure 8 In an example, a vehicle UE may page a pedestrian UE by transmitting information 914 in one or more subchannels of the V2P resource portion 808. The vehicle UE may determine the subchannel(s) by sensing the V2P resource portion 808 to find available subchannels (e.g., one or more subchannels not used by other vehicle UEs), and then selecting one or more subchannels from the available subchannels. For example, the vehicle UE may measure the energy of a subchannel in the V2P resource portion 808, and if the energy is less than a predefined threshold (indicating that the subchannel is not busy), the vehicle UE may identify the subchannel as an available candidate for sending information 914. The vehicle UE may then select one or more subchannels from the available candidates. Thereafter, the vehicle UE may encrypt the paging information, SCI, or other information with the RNTI or other identifier of the target pedestrian UE, and transmit the information 914 in one or more symbols of the selected subchannel(s) of the V2P resource portion 808.

[0103] Finally, the transmitting device 902 transmits a message 924 to the receiving device 904 based on the indication 910, and the receiving device 904 receives the message 924 based on the indication 910. Figure 5-8 In an example, after sending the paging indicator signal 912 or information 914, the vehicular UE may transmit a message (e.g., requesting the pedestrian to move or perform another action) to the pedestrian UE in the V2P resource portion 510, 606, 706, 808 based on the paging indicator signal 912 or information 914. In one example, after successful transmission and reception of the indication 910 (e.g., based on the presence of the vehicular UE and the pedestrian UE), the message 924 may be transmitted and received in the resources of the V2P resource portion. In another example, the resources in the V2P resource portion in which the message 924 may be transmitted and received may be based on a subchannel of the P2V resources 612, 614, an identifier of the pedestrian UE, or an identifier of the vehicular UE, and may correspond to a time and frequency mapping of the pedestrian UE-specific paging resources 608, 610 or the vehicular UE-specific paging resources 708, 710, 712, 714 in which the paging indicator signal was received. In another example, when a paging is received in the paging indicator resource 508, 604, 704, a pedestrian UE may V2P to receive the message 924 and may otherwise be in a time slot duration T V2P In a further example, refer to Figure 8 In the example of FIG. 8 , after sending information 914 in one or more symbols of a specific one or more subchannels of the V2P resource portion 808, the vehicle UE may transmit a message 924 in the specific subchannel(s) in the V2P resource portion 808 or in one or more subsequent symbols of a subsequent V2P resource portion 808. The vehicle UE may also receive data 926 transmitted from a recipient device 904 in one or more subchannels of the P2V resource portion 806, which may be the same as or different from the subchannel(s) used to transmit the message 924.

[0104] Fig.10 1000 is a flow chart of a method of wireless communication. The method may be performed by a receiving device (e.g., pedestrian UE 410, 412; device 1102) communicating with a transmitting device (e.g., vehicle UE 402, 404, 406, 408). Optional aspects are illustrated with dashed lines. The method allows UEs to monitor paging for V2P communications with more efficient power consumption.

[0105] At 1002, the receiving device monitors a plurality of resources for an indication of V2P communication from a second UE. For example, monitoring a plurality of resources for an indication of V2P communication may be performed by Fig.11The plurality of resources may be time-division multiplexed with resources for non-V2P communications. For example, referring to Fig. 9 In the example of , at 916, the receiving device 904 monitors multiple resources (e.g., V2P / P2V resources 502) to look for an indication of V2P communication (e.g., indication 910) from the transmitting device 902. The V2P / P2V resources 502 may include one or more resource pools dedicated to V2P and P2V communications between vehicle UEs and pedestrian UEs. The V2P / P2V resources 502 may be time-division multiplexed with non-V2P / P2V resources 504 for non-V2P / P2V communications, such as Figure 5 and 8 As explained in .

[0106] At 1004, the receiving device receives an indication of V2P communication. For example, receiving the indication of V2P communication may be performed by Fig.11 The example indication component 1142 of the device 1102 is executed. The multiple resources can each include a P2V resource portion for communication from the first UE to the second UE, and a V2P resource portion for communication from the second UE to the first UE. The P2V resource portion and the V2P resource portion can span multiple resource blocks in one or more adjacent time slots. In a first aspect, the indication can include a paging indicator signal, and each of the multiple resources can also include a paging indicator resource for the first UE to monitor the paging indicator signal from the second UE. The paging indicator resource can span multiple resource blocks in a time slot. For example, reference Figure 5-7 In an example of, the V2P / P2V resources 502 may each include a P2V resource portion 506, 602, 702 for communication from a pedestrian UE to a vehicular UE, a paging indicator resource 508, 604, 704 for the pedestrian UE to monitor for a paging indicator signal from the vehicular UE, and a V2P resource portion 510, 606, 706 for communication from the vehicular UE to the pedestrian UE. The pedestrian UE may monitor the paging indicator resources 508, 604, 704 (e.g., a common resource pool, paging resources 608, 610 specific to the pedestrian UE, or paging resources 708, 710, 712, 714 specific to the vehicular UE) to look for a paging indicator signal 912 from any vehicular UE. The P2V resource portions 506, 602, 702 and the V2P resource portions 510, 606, 706 may each span multiple resource blocks in one or more contiguous time slots (e.g., Figure 2 200, 210). Similarly, the paging indicator resources 508, 604, 704 may span multiple resource blocks in one or more time slots.

[0107] In one example, the paging indicator resource may include a common resource pool configured for multiple UEs. Figure 5 In an example, the paging indicator resource 508 includes a range of vehicle UEs for the vehicle UE to page (eg, Figure 4 A common resource pool for all pedestrian UEs within a range 401 of the common resource pool. The common resource pool may be pre-configured by the network (e.g., by the EPC 160 and / or the core network 190) for all pedestrian UEs 410, 412. Any vehicle UE that intends to communicate with any pedestrian UE (e.g., when the vehicle is in a collision course with the pedestrian 430) may page the pedestrian UE by transmitting a paging indicator signal in one or more resources of the common resource pool.

[0108] The paging indicator signal may include a preconfigured sequence, and the pedestrian UE may monitor the preconfigured sequence across one or more resource blocks in a time slot. Figure 5 For example, the paging indicator signal may include a common sequence, such as a Zadoff-Chu sequence or other sequence, transmitted across one or more RBs in the time slot(s) of the paging indicator resource 508. The common sequence may be preconfigured by the network for all vehicular UEs. Thus, when paging any pedestrian UE in the common paging indicator resource, any vehicular UE may use the same preconfigured sequence.

[0109] The paging indicator resource and the paging indicator signal may be based on the location of the first UE and the second UE. Figure 5 For example, the paging indicator signal and / or the shared paging indicator resource may also depend on the location (e.g., geographic area or region) of the paging vehicle UE and the paged pedestrian UE. Figure 4 For example, if the fourth vehicle UE 408 is in one area and the other vehicle UEs 402, 404, 406 are in different areas, the network can configure the paging indicator resources for the fourth vehicle UE 408 to be different from the common paging resources used for the other UEs 402, 404, 406 (e.g., in duration, number of RBs, periodicity, etc.).

[0110] In another example, the paging indicator resource may include a UE-specific paging resource associated with the first UE for monitoring a paging indicator signal. The paging indicator resource may span one or more resource blocks. For example, referring to Figure 6 In the example of , the paging indicator resource 604 includes paging resources 608, 610 that are specific to the pedestrian UE and are used by the vehicle UE to page a specific pedestrian UE within the range of the vehicle UE (e.g., range 401). Figure 4In an example of a first pedestrian UE-specific paging resource 608, the network may assign a first pedestrian UE 410 (e.g., P-UE 1), and a second pedestrian UE-specific paging resource 610 may be assigned by the network to a second pedestrian UE 412 (e.g., P-UE 2). For example, when a vehicle is in a collision course with a pedestrian 430, any vehicle UE that intends to communicate with a particular pedestrian UE (e.g., pedestrian UEs 410, 412) may page the pedestrian UE by transmitting a paging indicator signal in the corresponding pedestrian UE-specific paging resource 608, 610. The paging indicator resource 604 may span one or more resource blocks in one or more time slots.

[0111] The UE-specific paging resources may be based on one of: resources associated with the first UE for communicating with the second UE in the P2V resource portion, or an identifier of the first UE. For example, the UE-specific paging resources may be based on a subchannel for communicating with the second UE in the P2V resource portion. Alternatively, the UE-specific paging resources may be based on the identifier of the first UE and the number of resource blocks available or allocated in the paging indicator resources. For example, referring to Figure 6 For example, the paging resources 608, 610 that are specific to pedestrian UEs may be based on the P2V resources 612, 614 in which pedestrian UEs 410, 412 transmit data to vehicle UEs. Figure 6 As explained in , the paging resources 608, 610 that vary from pedestrian UE to pedestrian UE can be configured by the network (e.g., by the EPC 160 and / or the core network 190) or selected by the corresponding pedestrian UE to include the same (subchannels) or (subcarriers) as the P2V resources 612, 614. The paging resources 608, 610 that vary from pedestrian UE to pedestrian UE can also be based on the identifier of the pedestrian UE. For example, the paging resources 608, 610 that vary from pedestrian UE to pedestrian UE can be configured by the network or selected by the corresponding pedestrian UE based on the P-RNTI or other identifier of the pedestrian UE and / or the number of physical resource blocks in each paging indicator resource 604 pool (e.g., as calculated in Equation 1 above) to include different starting codewords and subchannels.

[0112] The paging indicator signal may include one of a common sequence for multiple UEs or a UE-specific sequence for the second UE. The UE-specific sequence may be based on an identifier of the second UE and an available number of paging indicator sequences allocated to be paged for the second UE. For example, referring to Figure 6For example, a vehicle UE may select a sequence (such as a Zadoff-Chu sequence or other sequence) for a paging indicator signal, which is transmitted in the paging resources 608, 610 that are specific to pedestrian UEs in the paging indicator resource 604 pool. The sequence may be a common sequence preconfigured by the network for all vehicle UEs. Therefore, when paging the corresponding pedestrian UE in the paging resources 608, 610 that are specific to pedestrian UEs, any vehicle UE may choose to use the same preconfigured sequence. Alternatively, the sequence may be a sequence that is specific to the vehicle UE. The sequence that is specific to the vehicle UE may be based on an identifier of the vehicle UE. For example, a sequence that is specific to the vehicle UE may be configured by the network or selected by the corresponding vehicle UE based on the RNTI or other identifier of the vehicle UE and / or the number of paging indication sequences for the vehicle UE (e.g., such as calculated using Formula 2 above).

[0113] In another example, the paging indicator resource may include a UE-specific paging resource associated with the second UE for monitoring the paging indicator signal. The paging indicator resource may include an additional UE-specific paging resource assigned to the additional UE. Figure 7 For example, the paging indicator resource 704 may include paging resources 708, 710, 712, 714 that are specific to the vehicle UE for the vehicle UE to page any pedestrian UE within the range of the vehicle UE (e.g., range 401). Figure 4 , a first vehicular UE-specific paging resource 708 may be assigned by the network (e.g., by EPC 160 and / or core network 190) to a first vehicular UE 402 (e.g., V-UE 1), a second vehicular UE-specific paging resource 710 may be assigned by the network to a second vehicular UE 404, a third vehicular UE-specific paging resource 712 may be assigned by the network to a third vehicular UE 406, and a fourth vehicular UE-specific paging resource 714 may be assigned by the network to a fourth vehicular UE 408. For example, when the vehicle is in a collision course with a pedestrian 430, each vehicular UE that intends to communicate with the pedestrian UE (e.g., pedestrian UEs 410, 412) may page the pedestrian UE by transmitting a paging indicator signal in its respective vehicular UE-specific paging resource 708, 710, 712, 714.

[0114] The UE-specific paging resource may be based on the identifier of the second UE and the number of available paging resource blocks in the paging indicator resource. Figure 7In an example, paging resources 708, 710, 712, 714 that vary from transport UE to transport UE may be selected by the corresponding transport UE (or configured by the network) based on the RNTI or other identifier of the transport UE and / or the number of physical resource blocks in each paging indicator resource 704 pool (e.g., such as calculated based on Formula 3 above) to include different starting code elements and subchannels.

[0115] The message may be received in one or more resources associated with the second UE in the V2P resource portion based on whether a paging indicator signal is received in the UE-specific paging resource. Figure 7 For example, if a pedestrian UE detects a paging indicator signal from a vehicular UE directed to the pedestrian UE in a corresponding vehicular UE-specific paging resource 708, 710, 712, 714, the pedestrian UE may determine that a message from the vehicular UE may be received in a corresponding resource of the V2P resource portion 706, and may monitor the corresponding resource in the V2P resource portion 706 for the message. The monitored resources in the V2P resource portion 706 may be based on an identifier of the vehicular UE, for example, and may similarly correspond to a time and frequency mapping of the vehicular UE-specific paging resources 708, 710, 712, 714 in which the paging indicator signal was received.

[0116] In a second aspect, the indication may include information from the second UE in a subchannel of the V2P resource portion. The V2P resource portion may include a subchannel size spanning multiple time slots. For example, referring to Figure 8 Example, with Figure 5-7 The example is different. Figure 8 The V2P / P2V resources 802 do not include paging indicator resources 508, 604, 704 for pedestrian UEs to monitor paging indicator signals from vehicle UEs. Instead, different vehicle UEs can send information to pedestrian UEs in different subchannels of the V2P resource portion 808, and the vehicle UE can transmit unicast messages based on the information, and the pedestrian UE can receive unicast messages based on the information. In one example, any vehicle UE can transmit paging information, SCI, or other information in one or more code elements of a specific subchannel or specific multiple subchannels of the V2P resource portion 808, and any pedestrian UE can monitor different subchannels to find the information. The P2V resource portion 806 and the V2P resource portion 808 can each have a plurality of resource blocks and multiple time slots (e.g., Figure 2 The subchannel size of RBs and time slots in Examples 200 and 210.

[0117] The message may include a unicast message received from the second UE in the subchannel based on the indication. The additional unicast message may be received from the other UE in the additional subchannel of the V2P resource portion, and the subchannel and the additional subchannel may be decoded for the unicast message from the second UE. For example, referring to Figure 8 In an example, each pedestrian UE can receive the V2P resource portion 808 and decode information encrypted with an identifier (e.g., RNTI or other identifier) ​​of the pedestrian UE received from any vehicle UE in any subchannel. If the pedestrian UE detects information from a vehicle UE directed to the pedestrian UE in any subchannel, the pedestrian UE can determine that a message from the vehicle UE may be received in the V2P resource portion 808 or another V2P resource portion 808 (e.g., based on scheduling), and can then receive resources for the message in the corresponding (sub) subchannel of the V2P resource portion. Therefore, each pedestrian UE can receive a unicast message from any vehicle UE in any subchannel.

[0118] At 1006, when the paging indicator signal is not within the paging indicator resource, the receiving device may refrain from monitoring the V2P resource portion for V2P communication. For example, refraining from monitoring the V2P resource portion may be performed by Fig.11 The example suppression component 1144 of the device 1102 is executed. For example, referring to Fig. 9 In the example of , at 918, when the paging indicator signal is not within the paging indicator resource, the recipient device 904 can refrain from monitoring the V2P resource portion to find V2P communication. Figure 5-7 For example, if the pedestrian UE fails to detect a paging indicator signal directed to the pedestrian UE from the vehicle UE in the paging indicator resources 508, 604, 704, the pedestrian UE may determine that it may not receive a message from the vehicle UE in the V2P resource portion 510, 606, 706, and may therefore refrain from monitoring the V2P resource portion for V2P communication. As an example, when no paging is received in the paging indicator resources, the pedestrian UE may V2P Hibernate during this time.

[0119] At 1008, the receiving device receives a message from the second UE based on the indication. For example, receiving a message from the second UE based on the indication may be performed by Fig.11 1102 of the device 1102. For example, referring to Fig. 9 In the example of FIG. 9 , the transmitting device 902 transmits a message 924 to the receiving device 904 based on the indication 910, and the receiving device 904 receives the message 924 based on the indication 910. Figure 5-8In an example, after receiving the paging indicator signal 912 or information 914, the pedestrian UE may receive a message (eg, requesting the pedestrian to move or perform another action) from the vehicle UE in the V2P resource portion 510, 606, 706, 808 based on the paging indicator signal 912 or information 914.

[0120] Finally, at 1010, the receiving device may transmit data to the second UE in a subchannel of the P2V resource portion. For example, transmitting data to the second UE may be performed by Fig.11 1102 of the device 1102. For example, referring to Fig. 9 , the pedestrian UE may transmit data 926 to the vehicle UE in one or more subchannels of the P2V resource portion 806 , which may be the same as or different from the subchannel(s) used to receive the message 924 .

[0121] Fig.111100 is an example of a hardware implementation of an illustrative device 1102. The device 1102 may be a receiving device (e.g., a pedestrian UE 410, 412 and / or a receiving device 904). The device 1102 includes a cellular baseband processor 1104 (also referred to as a modem) coupled to a cellular RF transceiver 1122 and one or more subscriber identity modules (SIM) cards 1120, an application processor 1106 coupled to a secure digital (SD) card 1108 and a screen 1110, a Bluetooth module 1112, a wireless local area network (WLAN) module 1114, a global positioning system (GPS) module 1116, and a power supply 1118. The cellular baseband processor 1104 communicates with the UE 104 and / or the base station 102 / 180 via the cellular RF transceiver 1122. The cellular baseband processor 1104 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-transitory. The cellular baseband processor 1104 is responsible for general processing, including the execution of software stored on a computer-readable medium / memory. The software, when executed by the cellular baseband processor 1104, causes the cellular baseband processor 1104 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 1104 when executing the software. The cellular baseband processor 1104 further includes a receiving component 1130, a communication manager 1132, and a transmission component 1134. The communication manager 1132 includes one or more of the illustrated components. The components within the communication manager 1132 may be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1104. The cellular baseband processor 1104 may be a component of the device 350 and may include a memory 360 and / or at least one of the following: a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the device 1102 may be a modem chip and include only the baseband processor 1104, and in another configuration, the device 1102 may be an entire UE (e.g., see Figure 3 Device 350) and includes the aforementioned additional modules of device 1102.

[0122] The communication manager 1132 includes a monitoring component 1140 configured to monitor a plurality of resources (eg, received via the receiving component 1130) for an indication of a vehicle-to-pedestrian (V2P) communication from a second UE, such as in conjunction with Fig.10 The communication manager 1132 further includes an indication component 1142, which is configured to receive an indication of V2P communication, for example, as described in conjunction with Fig.10The communication manager 1132 further includes a suppression component 1144 configured to suppress monitoring the V2P resource portion for V2P communication when the paging indicator signal is not within the paging indicator resource, for example, as described in conjunction with Fig.10 The communication manager 1132 further includes a message component 1146, which is configured to receive a message from the second UE based on the indication (e.g., via the receiving component 1130), for example, as described in conjunction with Fig.10 The communication manager 1132 may also include a data component 1148 configured to transmit data to the second UE in a subchannel of the P2V resource portion (eg, via the transmission component 1134), for example, as described in conjunction with Fig.10 1010 as described.

[0123] The apparatus may include executing Fig.10 The additional components of each box of the algorithm in the preceding flowchart. Thus, Fig.10 Each block in the aforementioned flow chart of can be performed by a component and the device may include one or more of those components. These components can be one or more hardware components specially configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0124] In one configuration, the device 1102, and in particular the cellular baseband processor 1104, includes means for monitoring a plurality of resources for an indication of V2P communication from a second UE. The example device 1102 also includes means for receiving an indication of V2P communication. The example device 1102 also includes means for receiving a message from the second UE based on the indication. In another configuration, the device 1102 may include means for refraining from monitoring a V2P resource portion for V2P communication when a paging indicator signal is not within a paging indicator resource. In another configuration, the device 1102 may include means for transmitting data to the second UE in a subchannel of the P2V resource portion.

[0125] The aforementioned means may be one or more of the aforementioned components in the device 1102 configured to perform the functions recited by the aforementioned means. As described above, the device 1102 may include the TX processor 368, the RX processor 356, and the controller / processor 359. Thus, in one configuration, the aforementioned means may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions recited by the aforementioned means.

[0126] Fig.121200 is a flow chart of a wireless communication method. The method may be performed by a transmitting device (e.g., a vehicle UE 402, 404, 406, 408 and / or a transmitting device 902) communicating with a receiving device (e.g., a pedestrian UE 410, 412 and / or a receiving device 904); Fig.13 The method allows a vehicle UE to efficiently page a pedestrian UE in V2P communication.

[0127] At 1202, the transmitting device may select a sequence for a paging indicator signal, wherein the sequence includes one of a common sequence for multiple UEs or a UE-specific sequence for a first UE. For example, the sequence selected for the paging indicator signal may be Fig.13 The example sequence component 1340 of the device 1302 is executed. For example, referring to Fig. 9 In the example of , at 906, the transmitting device 902 may select a sequence for the paging indicator signal. Figure 6 For example, a vehicular UE may select a sequence (such as a Zadoff-Chu sequence or other sequence) for a paging indicator signal, which is transmitted in a paging resource 608, 610 that is specific to a pedestrian UE in a pool of paging indicator resources 604. The sequence may be a common sequence preconfigured by the network for all vehicular UEs. Alternatively, the sequence may be a sequence that is specific to a vehicular UE.

[0128] The UE-specific sequence may be based on an identifier of the first UE and the number of paging indication sequences for the first UE. For example, the UE-specific sequence may be configured by the network or selected by the corresponding UE based on the RNTI or other identifier of the UE and / or the number of paging indication sequences for the UE (e.g., such as calculated using Equation 2 above).

[0129] At 1204, the transmitting device may determine a UE-specific paging resource associated with the first UE for transmitting a paging indicator signal, wherein the paging indicator resource includes a UE-specific paging resource. For example, determining the UE-specific paging resource may be performed by Fig.13 1302 of the device 1302. For example, referring to Fig. 9 For example, at 908, the transmitting device 902 may determine a UE-specific paging resource associated with the transmitting device 902 for transmitting the paging indicator signal. Figure 7 For example, the vehicular UE may determine vehicular UE-specific paging resources (eg, vehicular UE-specific paging resources 708 , 710 , 712 , 714 ) from the pool of paging indicator resources 704 .

[0130] The UE-specific paging resources may be based on the identifier of the first UE and the available number of resource blocks in the paging indicator resource. Figure 7 In an example, paging resources 708, 710, 712, 714 that vary from transport UE to transport UE may be selected by the corresponding transport UE (or configured by the network) based on the RNTI or other identifier of the transport UE and / or the number of physical resource blocks in each paging indicator resource 704 pool (e.g., such as calculated based on Formula 3 above) to include different starting code elements and subchannels.

[0131] At 1206, the transmitting device provides an indication of V2P communication to the second UE in a resource from the plurality of resources. For example, providing the indication of V2P communication may be performed by Fig.13 The example instructing component 1344 of the device 1302 to execute. The plurality of resources may be time-division multiplexed with resources for non-V2P communication. For example, referring to Fig. 9 In an example, a transmitting device 902 provides an indication 910 of V2P communication to a receiving device 904 in a resource (e.g., V2P / P2V resource 502) from a plurality of resources. The V2P / P2V resource 502 may include one or more resource pools dedicated to V2P and P2V communication between a vehicle UE and a pedestrian UE. The V2P / P2V resource 502 may be time-division multiplexed with a non-V2P / P2V resource 504 for non-V2P / P2V communication, such as Figure 5 and 8 As explained in .

[0132] The plurality of resources may each include a P2V resource portion for communication from the second UE to the first UE, and a V2P resource portion for communication from the first UE to the second UE. The P2V resource portion and the V2P resource portion may span multiple resource blocks in one or more contiguous time slots. In a first aspect, the indication may include a paging indicator signal, and each of the plurality of resources may also include a paging indicator resource for the first UE to transmit the paging indicator signal to the second UE. The paging indicator resource may span multiple resource blocks in a time slot. For example, referring to Figure 5-7In an example of , the V2P / P2V resources 502 may each include a P2V resource portion 506, 602, 702 for communication from a pedestrian UE to a vehicular UE, a paging indicator resource 508, 604, 704 for the vehicular UE to transmit a paging indicator signal to the pedestrian UE, and a V2P resource portion 510, 606, 706 for communication from the vehicular UE to the pedestrian UE. The vehicular UE may transmit a paging indicator signal 912 to any pedestrian UE in the paging indicator resource 508, 604, 704 (e.g., a common resource pool, a paging resource 608, 610 specific to a pedestrian UE, or a paging resource 708, 710, 712, 714 specific to a vehicular UE). The P2V resource portion 506, 602, 702 and the V2P resource portion 510, 606, 706 may each span multiple resource blocks in one or more contiguous time slots (e.g., Figure 2 200, 210). Similarly, the paging indicator resources 508, 604, 704 may span multiple resource blocks in one or more time slots.

[0133] In one example, the paging indicator resources may include a common resource pool for multiple UEs. Figure 5 In an example of, the paging indicator resources 508 include a common resource pool for the vehicle UE to page all pedestrian UEs within the range of the vehicle UE (e.g., range 401). The common resource pool can be pre-configured by the network (e.g., by the EPC 160 and / or the core network 190) for all pedestrian UEs 410, 412. Any vehicle UE that intends to communicate with any pedestrian (e.g., when the vehicle is in a collision process with the pedestrian 430) can page the pedestrian UE by transmitting a paging indicator signal in one or more resources of the common resource pool.

[0134] The paging indicator signal may include a preconfigured sequence, and the preconfigured sequence may be transmitted across one or more resource blocks in a time slot. Figure 5 For example, the paging indicator signal may include a common sequence, such as a Zadoff-Chu sequence or other sequence, transmitted across one or more RBs in the time slot(s) of the paging indicator resource 508. The common sequence may be preconfigured by the network for all vehicular UEs. Thus, when paging any pedestrian UE in the common paging indicator resource, any vehicular UE may use the same preconfigured sequence.

[0135] The paging indicator resource and the paging indicator signal may be based on the location of the first UE and the second UE. Figure 5For example, the paging indicator signal and / or the shared paging indicator resource may also depend on the location (e.g., geographic area or region) of the paging vehicle UE and the paged pedestrian UE. Figure 4 For example, if the fourth vehicle UE 408 is in one area and the other vehicle UEs 402, 404, 406 are in different areas, the network can configure the paging indicator resources for the fourth vehicle UE 408 to be different from the common paging resources used for the other vehicle UEs 402, 404, 406 (for example, in terms of duration, number of RBs, periodicity, etc.).

[0136] In another example, the paging indicator resource may include a UE-specific paging resource associated with the second UE for transmitting a paging indicator signal. The paging indicator resource may span one or more resource blocks of a preconfigured size. For example, referring to Figure 6 In the example of , the paging indicator resource 604 includes paging resources 608, 610 that are specific to the pedestrian UE and are used by the vehicle UE to page a specific pedestrian UE within the range of the vehicle UE (e.g., range 401). Figure 4 , a first pedestrian UE-specific paging resource 608 may be assigned by the network to a first pedestrian UE 410 (e.g., P-UE 1), and a second pedestrian UE-specific paging resource 610 may be assigned by the network to a second pedestrian UE 412 (e.g., P-UE 2). For example, when a vehicle is in a collision course with a pedestrian 430, any vehicle UE that intends to communicate with a particular pedestrian (e.g., pedestrian UEs 410, 412) may page the pedestrian UE by transmitting a paging indicator signal in the corresponding pedestrian UE-specific paging resource 608, 610. The paging indicator resource 604 may span one or more resource blocks in one or more time slots.

[0137] The UE-specific paging resource may be based on one of: resources associated with the second UE for communicating with the first UE in the P2V resource portion, or an identifier of the second UE. For example, the UE-specific paging resource may be based on a subchannel used for communication of the second UE in the P2V resource portion. Alternatively, the UE-specific paging resource may be based on an identifier of the second UE and an available number of resource blocks in the paging indicator resource. For example, referring to Figure 6 For example, the paging resources 608, 610 that are specific to pedestrian UEs may be based on the P2V resources 612, 614 in which pedestrian UEs 410, 412 transmit data to vehicle UEs. Figure 6As explained in , the paging resources 608, 610 that vary from pedestrian UE to pedestrian UE can be configured by the network (e.g., by EPC 160 and / or core network 190) or selected by the corresponding pedestrian UE to include the same (subchannels) or (subcarriers) as the P2V resources 612, 614. The paging resources 608, 610 that vary from pedestrian UE to pedestrian UE can also be based on the identifier of the pedestrian UE. For example, the paging resources 608, 610 that vary from pedestrian UE to pedestrian UE can be configured by the network or selected by the corresponding pedestrian UE based on the P-RNTI or other identifier of the pedestrian UE and / or the number of physical resource blocks in each paging indicator resource 604 pool (e.g., as calculated in Equation 1 above) to include different starting codewords and subchannels.

[0138] In a second aspect, the indication may include information provided to the second UE in a subchannel of the V2P resource portion. The V2P resource portion may include a subchannel size spanning multiple time slots. For example, referring to Figure 8 Example, with Figure 5-7 The example is different. Figure 8 The V2P / P2V resources 802 do not include paging indicator resources 508, 604, 704 for pedestrian UEs to monitor paging indicator signals from vehicle UEs. Instead, different vehicle UEs can send information to pedestrian UEs in different subchannels of the V2P resource portion 808, and the vehicle UE can transmit unicast messages based on the information, and the pedestrian UE can receive unicast messages based on the information. In one example, any vehicle UE can transmit paging information, SCI, or other information in one or more code elements of a specific subchannel or specific multiple subchannels of the V2P resource portion 808, and any pedestrian UE can monitor different subchannels to find the information. The P2V resource portion 806 and the V2P resource portion 808 can each have a plurality of resource blocks and multiple time slots (e.g., Figure 2 The subchannel size of RBs and time slots in Examples 200 and 210.

[0139] The message may include a unicast message transmitted to the second UE in the subchannel based on the indication. Figure 8 , each vehicular UE may transmit information in any subchannel of the V2P resource portion 808 that is to be decoded by a particular pedestrian UE and schedules an upcoming unicast message. The vehicular UE may then transmit messages to pedestrian UEs in corresponding (subchannels) and subsequent symbols of the V2P resource portion 808 or another V2P resource portion 808 (e.g., based on the schedule). Thus, each vehicular UE may transmit a unicast message to any pedestrian UE in any subchannel.

[0140] At 1208, the transmitting device may sense the V2P resource portion to find an available subchannel, and at 1210, the transmitting device may identify a subchannel from the available subchannels. For example, sensing the V2P resource portion may be performed by Fig.13 The example sensing component 1346 of the device 1302 may be performed. Identifying a subchannel from the available subchannels may be performed by Fig.13 The example identification component 1348 of the device 1302 is executed. For example, referring to Fig. 9 For example, at 920, the transmitting device 902 may sense the V2P resource portion to find available subchannels, and at 922, the transmitting device 902 may identify a subchannel for providing the information 914 from the available subchannels.

[0141] At 1212, the transmitting device transmits a message to the second UE based on the indication. For example, the transmitting device may transmit a message to the second UE based on the indication. Fig.13 1302 of the device 1302. For example, referring to Fig. 9 In the example of FIG. 9 , the transmitting device 902 transmits a message 924 to the receiving device 904 based on the indication 910. For example, referring to Figure 5-8 For example, after sending the paging indicator signal 912 or information 914, the vehicle UE can transmit a message to the pedestrian UE in the V2P resource part 510, 606, 706, 808 based on the paging indicator signal 912 or information 914 (e.g., requesting the pedestrian to move or perform another action).

[0142] Finally, at 1214, the transmitting device may receive data from the second UE in a subchannel of the P2V resource portion. For example, receiving data from the second UE may be performed by Fig.13 1302 of the device 1302. For example, referring to Fig. 9 In the example of , the transmitting device 902 may receive data 926 transmitted from the receiving device 904 in one or more subchannels of the P2V resource portion 806 , which may be the same as or different from the subchannel(s) used to transmit the message 924 .

[0143] Fig.131300 is an example of a hardware implementation of an illustrative device 1302. The device 1302 may be a transmitting device (e.g., a vehicle UE 402, 404, 406, 408 and / or a transmitting device 902). The device 1302 includes a cellular baseband processor 1304 (also referred to as a modem) coupled to a cellular RF transceiver 1322 and one or more subscriber identity modules (SIM) cards 1320, an application processor 1306 coupled to a secure digital (SD) card 1308 and a screen 1310, a Bluetooth module 1312, a wireless local area network (WLAN) module 1314, a global positioning system (GPS) module 1316, and a power supply 1318. The cellular baseband processor 1304 communicates with the UE 104 and / or the base station 102 / 180 via the cellular RF transceiver 1322. The cellular baseband processor 1304 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-transitory. The cellular baseband processor 1304 is responsible for general processing, including the execution of software stored on a computer-readable medium / memory. The software, when executed by the cellular baseband processor 1304, causes the cellular baseband processor 1304 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 1304 when executing the software. The cellular baseband processor 1304 further includes a receiving component 1330, a communication manager 1332, and a transmission component 1334. The communication manager 1332 includes one or more of the illustrated components. The components within the communication manager 1332 may be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1304. The cellular baseband processor 1304 may be a component of the device 350 and may include a memory 360 and / or at least one of the following: a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the device 1302 may be a modem chip and include only the baseband processor 1304, and in another configuration, the device 1302 may be an entire UE (e.g., see Figure 3 device 350) and includes the aforementioned additional modules of device 1302.

[0144] The communication manager 1332 includes a sequence component 1340 configured to select a sequence for a paging indicator signal, for example, as described in conjunction with Fig.12 The sequence may include one of a common sequence for multiple UEs or a UE-specific sequence for the first UE. The communication manager 1332 further includes a resource component 1342, which is configured to determine a UE-specific paging resource associated with the first UE for transmitting a paging indicator signal, for example, as combined with Fig.12The paging indicator resource includes a paging resource that varies from UE to UE. The communication manager 1332 further includes an indication component 1344, which is configured to provide an indication of V2P communication to the second UE in a resource from the plurality of resources via the transmission component 1334, for example, as combined with Fig.12 The resource may be, for example, a UE-specific paging resource from resource component 1342. Communication manager 1332 further includes a sensing component 1346 configured to sense the V2P resource portion to find an available subchannel, for example, as combined with Fig.12 The communication manager 1332 further includes an identification component 1348, which is configured to identify a subchannel from the available subchannels, for example, as described in conjunction with Fig.12 1210. The indication provided by the indication component 1344 can be transmitted to the second UE in the identified subchannel. The communication manager 1332 further includes a message component 1350, which is configured to transmit a message to the second UE based on the indication from the indication component 1348 (e.g., via the transmission component 1334), for example, as combined Fig.12 The communication manager 1332 further includes a data component 1352 configured to receive data from the second UE in a subchannel of the P2V resource portion (eg, via the receiving component 1330), for example, as described in conjunction with Fig.12 1214 described.

[0145] The apparatus may include executing Fig.12 The additional components of each box of the algorithm in the preceding flowchart. Thus, Fig.12 Each block in the aforementioned flow chart of can be performed by a component and the device may include one or more of those components. These components can be one or more hardware components specially configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0146] In one configuration, the device 1302, and in particular the cellular baseband processor 1304, includes means for providing an indication of V2P communication to a second UE in a resource from a plurality of resources. The example device 1302 also includes means for transmitting a message to the second UE based on the indication. In another configuration, the device 1302 may include means for selecting a sequence for a paging indicator signal, wherein the sequence includes one of a common sequence for a plurality of UEs or a UE-specific sequence for a first UE. In another configuration, the device 1302 may include means for determining a UE-specific paging resource associated with the first UE for transmitting a paging indicator signal, wherein the paging indicator resource includes a UE-specific paging resource. In another configuration, the device 1302 may include means for receiving data from the second UE in a subchannel of a P2V resource portion. In another configuration, the device 1302 may include means for sensing a V2P resource portion to find an available subchannel. The example device 1302 may also include means for identifying a subchannel from the available subchannels.

[0147] The aforementioned means may be one or more of the aforementioned components in the device 1302 configured to perform the functions recited by the aforementioned means. As previously described, the device 1302 may include the TX processor 368, the RX processor 356, and the controller / processor 359. Thus, in one configuration, the aforementioned means may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions recited by the aforementioned means.

[0148] It should be understood that the specific order or hierarchy of each box in the disclosed process / flowchart is an illustration of an example approach. It should be understood that the specific order or hierarchy of each box in these process / flowcharts can be rearranged based on design preferences. In addition, some boxes can be combined or omitted. The attached method claims present the elements of various boxes in an exemplary order and are not meant to be limited to the specific order or hierarchy presented.

[0149] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be easily understood by those skilled in the art, and the universal principles defined in this article can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown in this article, but should be granted the full scope consistent with the claims in language, wherein the singular reference of the elements is not intended to represent "there is and only one", but "one or more", unless otherwise stated. Terms such as "if", "when..." and "when..." should be interpreted as meaning "under the condition", rather than implying a direct time 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 the condition is met, and no specific or immediate time constraints are required for the action to occur. The wording "exemplary" is used in this article to represent "used as an example, instance, or explanation". Any aspect described as "exemplary" herein need not be interpreted as being superior to or superior to other aspects. Unless otherwise stated, the term "some / certain" 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. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are currently or hereafter known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is expressly recited in the claims. The terms “module,” “mechanism,” “element,” “device,” etc. may not be substitutes for the term “means.” Thus, no claim element should be construed as means-plus-function unless the element is explicitly recited using the phrase “means for….”

[0150] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0151] Aspect 1 is a method of wireless communication of a first UE, comprising: monitoring a plurality of resources for an indication of V2P communication from a second UE; receiving an indication of V2P communication; and receiving a message from the second UE based on the indication.

[0152] In aspect 2, the method of aspect 1 further includes: time division multiplexing the plurality of resources with resources used for non-V2P communication.

[0153] In aspect 3, the method of any one of aspect 1 or aspect 2 further includes: the plurality of resources each include a P2V resource portion for communication from the first UE to the second UE, and a V2P resource portion for communication from the second UE to the first UE.

[0154] In aspect 4, the method of any one of aspects 1 to 3 further includes: the indication includes a paging indicator signal, and wherein each of the plurality of resources further includes a paging indicator resource for the first UE to monitor the paging indicator signal from the second UE.

[0155] In aspect 5, the method of any one of aspects 1 to 4 further comprises: refraining from monitoring the V2P resource portion for V2P communications when the paging indicator signal is not within the paging indicator resources.

[0156] In aspect 6, the method of any one of aspects 1 to 5 further comprises: the paging indicator resource comprises a common resource pool configured for multiple UEs.

[0157] In aspect 7, the method of any one of aspects 1 to 6 further comprises: the paging indicator resource spans a plurality of resource blocks in a time slot.

[0158] In aspect 8, the method of any one of aspects 1 to 7 further comprises: the paging indicator signal comprises a preconfigured sequence, and the preconfigured sequence is monitored across one or more resource blocks in a time slot.

[0159] In aspect 9, the method of any one of aspects 1 to 8 further comprises: the paging indicator resource and the paging indicator signal are based on the locations of the first UE and the second UE.

[0160] In aspect 10, the method of any one of aspects 1 to 9 further comprises: the P2V resource portion and the V2P resource portion spanning a plurality of resource blocks in one or more contiguous time slots.

[0161] In aspect 11, the method of any one of aspects 1 to 10 further comprises: the paging indicator resource comprises a UE-specific paging resource associated with the first UE for monitoring a paging indicator signal.

[0162] In aspect 12, the method of any one of aspects 1 to 11 further comprises: the UE-specific paging resources are based on one of: resources associated with the first UE for communicating with the second UE in the P2V resource portion, or an identifier of the first UE.

[0163] In aspect 13, the method of any one of aspects 1 to 12 further comprises: the UE-specific paging resource is based on an identifier of the first UE and a number of available or allocated resource blocks in the paging indicator resource.

[0164] In aspect 14, the method of any one of aspects 1 to 13 further comprises: the UE-specific paging resource is based on a sub-channel used for communicating with the second UE in the P2V resource portion.

[0165] In aspect 15, the method of any one of aspects 1 to 14 further comprises: the paging indicator resource spans one or more resource blocks.

[0166] In aspect 16, the method of any one of aspects 1 to 15 further comprises: the paging indicator signal comprises one of a common sequence for multiple UEs or a UE-specific sequence for the second UE.

[0167] In aspect 17, the method of any one of aspects 1 to 16 further comprises: the UE-specific sequence is based on an identifier of the second UE and an available number of paging indication sequences allocated to be paged for the second UE.

[0168] In aspect 18, the method of any one of aspects 1 to 17 further comprises: the paging indicator resource comprises a UE-specific paging resource associated with the second UE for monitoring the paging indicator signal.

[0169] In aspect 19, the method of any one of aspects 1 to 18 further comprises: the UE-specific paging resource is based on an identifier of the second UE and a number of available paging resource blocks in the paging indicator resource.

[0170] In aspect 20, the method of any one of aspects 1 to 19 further comprises: the paging indicator resources comprising additional UE-specific paging resources assigned to the additional UE.

[0171] In aspect 21, the method of any one of aspects 1 to 20 further comprises: receiving a message in one or more resources associated with the second UE in the V2P resource portion based on whether a paging indicator signal is received in the UE-specific paging resource.

[0172] In aspect 22, the method of any one of aspects 1 to 21 further comprises: the indication comprising information from the second UE in a subchannel of the V2P resource portion.

[0173] In aspect 23, the method of any one of aspects 1 to 22 further comprises: transmitting data to the second UE in a subchannel of the P2V resource portion.

[0174] In aspect 24, the method of any one of aspects 1 to 23 further comprises: the message comprising a unicast message received from the second UE in the subchannel based on the indication.

[0175] In aspect 25, the method of any one of aspects 1 to 24 further comprises: receiving an additional unicast message from other UEs in an additional subchannel of the V2P resource portion, and wherein the subchannel and the additional subchannel are decoded for the unicast message from the second UE.

[0176] In aspect 26, the method of any one of aspects 1 to 25 further comprises: the V2P resource portion comprises a sub-channel size spanning a plurality of time slots.

[0177] Aspect 27 is a device comprising one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions executable by the one or more processors to enable the device to implement a method as in any one of Aspects 1 to 26.

[0178] Aspect 28 is a system or apparatus comprising means for implementing the method in any one of aspects 1 to 26 or implementing the apparatus in any one of aspects 1 to 26.

[0179] Aspect 29 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method of any one of aspects 1 to 26.

[0180] Aspect 30 is a method of wireless communication at a first UE, comprising: providing an indication of V2P communication to a second UE in a resource from a plurality of resources; and transmitting a message to the second UE based on the indication.

[0181] In aspect 31, the method of aspect 30 further comprises: time division multiplexing the plurality of resources with resources for non-V2P communication.

[0182] In aspect 32, the method of any one of aspect 30 or aspect 31 further comprises: the plurality of resources comprises a P2V resource portion for communication from the second UE to the first UE, and a V2P resource portion for communication from the first UE to the second UE.

[0183] In aspect 33, the method of any one of aspects 30 to 32 further comprises: the indication comprises a paging indicator signal, and wherein the plurality of resources further comprises a paging indicator resource for the first UE to transmit the paging indicator signal to the second UE.

[0184] In aspect 34, the method of any one of aspects 30 to 33 further comprises: the paging indicator resources comprising a common resource pool for multiple UEs.

[0185] In aspect 35, the method of any one of aspects 30 to 34 further comprises: the paging indicator resource spans a plurality of resource blocks in a time slot.

[0186] In aspect 36, the method of any one of aspects 30 to 35 further comprises: the paging indicator signal comprises a preconfigured sequence, and the preconfigured sequence is transmitted across one or more resource blocks in a time slot.

[0187] In aspect 37, the method of any one of aspects 30 to 36 further comprises: the paging indicator resource and the paging indicator signal are based on the location of the first UE and the second UE.

[0188] In aspect 38, the method of any one of aspects 30 to 37 further comprises: the P2V resource portion and the V2P resource portion spanning a plurality of resource blocks in one or more contiguous time slots.

[0189] In aspect 39, the method of any one of aspects 30 to 38 further comprises: the paging indicator resource comprises a UE-specific paging resource associated with the second UE for transmitting the paging indicator signal.

[0190] In aspect 40, the method of any one of aspects 30 to 39 further comprises: the UE-specific paging resources are based on one of: resources associated with the second UE for communicating with the first UE in the P2V resource portion, or an identifier of the second UE.

[0191] In aspect 41, the method of any one of aspects 30 to 40 further comprises: the UE-specific paging resource is based on an identifier of the second UE and an available number of resource blocks in the paging indicator resource.

[0192] In aspect 42, the method of any one of aspects 30 to 41 further comprises: the UE-specific paging resource is based on a sub-channel used for communication of the second UE in the P2V resource portion.

[0193] In aspect 43, the method of any one of aspects 30 to 42 further comprises: the paging indicator resources spanning one or more resource blocks of a preconfigured size.

[0194] In aspect 44, the method of any one of aspects 30 to 43 further comprises: selecting a sequence for the paging indicator signal, wherein the sequence comprises one of a common sequence for multiple UEs or a UE-specific sequence for the first UE.

[0195] In aspect 45, the method of any one of aspects 30 to 44 further comprises: the UE-specific sequence is based on an identifier of the first UE and a number of paging indication sequences for the first UE.

[0196] In aspect 46, the method of any one of aspects 30 to 45 further comprises determining UE-specific paging resources associated with the first UE for transmitting a paging indicator signal, wherein the paging indicator resources comprise the UE-specific paging resources.

[0197] In aspect 47, the method of any one of aspects 30 to 46 further comprises: the UE-specific paging resource is based on an identifier of the first UE and an available number of resource blocks in the paging indicator resource.

[0198] In aspect 48, the method of any one of aspects 30 to 47 further comprises: the indication comprising information provided to the second UE in a subchannel of the V2P resource portion.

[0199] In aspect 49, the method of any one of aspects 30 to 48 further comprises: receiving data from the second UE in a subchannel of the P2V resource portion.

[0200] In aspect 50, the method of any one of aspects 30 to 49 further comprises: sensing the V2P resource portion to find available sub-channels; and identifying the sub-channel from the available sub-channels.

[0201] In aspect 51, the method of any one of aspects 30 to 50 further comprises: the message comprising a unicast message transmitted to the second UE in the subchannel based on the indication.

[0202] In aspect 52, the method of any one of aspects 30 to 51 further comprises: the V2P resource portion comprising a sub-channel size spanning a plurality of time slots.

[0203] Aspect 53 is a device comprising one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions executable by the one or more processors to cause the device to implement a method as in any one of Aspects 30 to 52.

[0204] Aspect 54 is a system or apparatus comprising means for implementing a method as in any one of aspects 30 to 52 or implementing an apparatus as in any one of aspects 30 to 52.

[0205] Aspect 55 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method of any one of aspects 30 to 52 .

Claims

1. A method for wireless communication of a first user equipment UE, the method comprising: monitoring a plurality of resources for an indication of vehicle-to-pedestrian (V2P) communications from a second UE, wherein the plurality of resources each include a pedestrian-to-vehicle (P2V) resource portion for communications from the first UE to the second UE and a V2P resource portion for communications from the second UE to the first UE; receiving the indication of the V2P communication in a resource from the plurality of resources; as well as A V2P message is received from the second UE based on the indication.

2. The method of claim 1, wherein: The plurality of resources are time division multiplexed TDM with resources used for non-V2P communication.

3. The method of claim 1, wherein: The indication comprises a paging indicator signal, and wherein each of the plurality of resources further comprises a paging indicator resource for the first UE to monitor the paging indicator signal from the second UE.

4. The method of claim 3, further comprising: When the paging indicator signal is not within the paging indicator resource, monitoring the V2P resource portion for the V2P communication is refrained.

5. The method of claim 3, wherein: The paging indicator resources include a common resource pool configured for multiple UEs.

6. The method of claim 5, wherein: The paging indicator resources span multiple resource blocks in a time slot.

7. The method of claim 5, wherein: The paging indicator signal includes a preconfigured sequence, and the preconfigured sequence is monitored across one or more resource blocks in a time slot.

8. The method of claim 5, wherein: The paging indicator resources and the paging indicator signal are based on locations of the first UE and the second UE.

9. The method of claim 5, wherein: The P2V resource portion and the V2P resource portion each span a plurality of resource blocks in one or more contiguous time slots.

10. The method of claim 3, wherein: The paging indicator resources include UE-specific paging resources associated with the first UE for monitoring the paging indicator signal.

11. The method of claim 10, wherein: The UE-specific paging resources are based on one of: resources associated with the first UE for communicating with the second UE in the P2V resource portion, or an identifier of the first UE.

12. The method of claim 11, wherein: The UE-specific paging resource is based on an identifier of the first UE and a number of available or allocated resource blocks in the paging indicator resource.

13. The method of claim 11, wherein: The UE-specific paging resources are based on a sub-channel used for communicating with the second UE in the P2V resource portion.

14. The method of claim 10, wherein: The paging indicator resources span one or more resource blocks.

15. The method of claim 10, wherein: The paging indicator signal includes one of a common sequence for multiple UEs or a UE-specific sequence for the second UE.

16. The method of claim 15, wherein: The UE-specific sequence is based on an identifier of the second UE and an available number of paging indication sequences allocated to be paged for the second UE.

17. The method of claim 3, wherein: The paging indicator resources include UE-specific paging resources associated with the second UE for monitoring the paging indicator signal.

18. The method of claim 17, wherein: The UE-specific paging resource is based on an identifier of the second UE and a number of available paging resource blocks in the paging indicator resources.

19. The method of claim 17, wherein: The paging indicator resources include additional UE-specific paging resources assigned to additional UEs.

20. The method of claim 19, wherein: The V2P message is received in one or more resources associated with the second UE in the V2P resource portion based on whether the paging indicator signal is received in the UE-specific paging resource.

21. The method of claim 1, wherein: The indication includes information from the second UE in a subchannel of the V2P resource portion.

22. The method of claim 21, further comprising: Data is transmitted to the second UE in a subchannel of the P2V resource portion.

23. The method of claim 21, wherein: The V2P message includes a unicast message received from the second UE in the subchannel based on the indication.

24. The method of claim 23, wherein: Additional unicast messages are received from other UEs in additional subchannels of the V2P resource portion, and wherein the subchannels and the additional subchannels are decoded for the unicast message from the second UE.

25. The method of claim 21, wherein: The V2P resource portion includes a sub-channel size spanning multiple time slots.

26. A device for wireless communication of a first user equipment UE, the device comprising: Memory; as well as at least one processor coupled to the memory and configured to: monitoring a plurality of resources for an indication of vehicle-to-pedestrian (V2P) communications from a second UE, wherein the plurality of resources each include a pedestrian-to-vehicle (P2V) resource portion for communications from the first UE to the second UE and a V2P resource portion for communications from the second UE to the first UE; receiving the indication of the V2P communication in a resource from the plurality of resources; as well as A V2P message is received from the second UE based on the indication.

27. A method for wireless communication at a first user equipment UE, the method comprising: providing an indication of vehicle-to-pedestrian (V2P) communication to a second UE in a resource from a plurality of resources, wherein the plurality of resources each include a pedestrian-to-vehicle (P2V) resource portion for communication from the second UE to the first UE and a V2P resource portion for communication from the first UE to the second UE; as well as A V2P message is transmitted to the second UE based on the indication.

28. A device for wireless communication of a first user equipment UE, the device comprising: Memory; as well as at least one processor coupled to the memory and configured to: providing an indication of vehicle-to-pedestrian (V2P) communication to a second UE in a resource from a plurality of resources, wherein the plurality of resources each include a pedestrian-to-vehicle (P2V) resource portion for communication from the second UE to the first UE and a V2P resource portion for communication from the first UE to the second UE; as well as A V2P message is transmitted to the second UE based on the indication.

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