Systems and methods for vehicle-to-pedestrian paging on sidelink channels

Abstract

In one aspect of the present disclosure, methods, computer-readable media, and apparatuses are provided. The apparatus may be a pedestrian user equipment (PUE). The apparatus may be configured to: monitor a first resource set to detect a paging indicator indicating that a paging message is carried on a second resource set allocated for vehicle-to-pedestrian (V2P) communication that is contiguous with the first resource set; decode information on the second resource set to detect a paging message from a second UE when the paging indicator is detected, the paging message being associated with V2P communication; and suppress decoding of information on the second resource set when the paging indicator is not detected.

Description

[0001] Cross - Reference to Related Applications

[0002] This application claims the benefit of U.S. Provisional Application No. 62 / 961,603, filed on January 15, 2020, entitled "SYSTEM AND METHOD FOR VEHICLE - TO - PEDESTRIAN PAGING ON A SIDELINK CHANNEL", and U.S. Patent Application No. 17 / 148,483, filed on January 13, 2021, entitled "SYSTEM AND METHOD FOR VEHICLE - TO - PEDESTRIAN PAGING ON A SIDELINK CHANNEL", which are hereby incorporated by reference in their entirety. Background Technical Field

[0004] This disclosure generally relates to communication systems, and more particularly to systems configured to convey paging messages associated with vehicle - to - pedestrian communication on a sidelink channel.

[0005] Introduction

[0006] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ a multiple access technology that is 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 a common protocol that enables different wireless devices to communicate at the urban, national, regional, 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 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvement in 5G NR technology. These improvements can also be applicable to other multiple access technologies and telecommunication standards that employ these technologies.

[0008] Overview

[0009] A brief overview of one or more aspects is given below to provide a basic understanding of such aspects. This overview is not an exhaustive survey of all contemplated aspects and is neither intended to identify 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 the more detailed description that follows.

[0010] According to various radio access technologies (RATs), vehicle-to-pedestrian (V2P) communication can refer to communication transmitted from a UE associated with a vehicle (also referred to as a VUE) to another UE associated with a pedestrian (also referred to as a PUE). Correspondingly, P2V communication can refer to communication transmitted from a PUE to a VUE.

[0011] V2P communication can be used for pedestrian safety. For example, a VUE can use V2P communication to notify a PUE that both are on a collision course. Additionally, P2V communication can further contribute to the safety of pedestrians and / or vehicles. For example, P2V communication can be used by a PUE to notify a VUE of the PUE's location and / or intended travel route.

[0012] In some aspects, one or both of V2P and / or P2V communication can be relatively infrequent. However, one or both of V2P and / or P2V communication can still rely on relatively low latency to contribute to the safety of pedestrians and / or vehicles. Additionally, a PUE may be subject to some power limitations and may therefore not be able to continuously monitor V2P communication. Accordingly, there is a need for efficient and reliable methods and solutions for V2P and / or P2V communication.

[0013] The present disclosure provides various methods and solutions for resource allocation for PUE and VUE. For example, the present disclosure describes various methods and solutions for allocating resources for VUE to notify PUE to consider security (e.g., low latency and reliability) and power consumption (e.g., of PUE).

[0014] In one aspect of the present disclosure, a method, a computer-readable medium, and a device are provided. The device may be a PUE. The device may be configured to: monitor a first resource set to detect a paging indicator indicating that a paging message is carried on a second resource set allocated for V2P communication that is contiguous with the first resource set; decode information on the second resource set to detect a paging message from a second UE when the paging indicator is detected, the paging message being associated with V2P communication; and suppress decoding of information on the second resource set when the paging indicator is not detected.

[0015] In another aspect of the present disclosure, another method, another computer-readable medium, and another device are provided. The other device may be a VUE. The device may be configured to: transmit a paging indicator on a first resource set indicating that a paging message is scheduled on a second resource set allocated for V2P communication that is contiguous with the first resource set; and transmit a paging message on the second resource set after transmitting the paging indicator, the paging message being associated with V2P communication.

[0016] To achieve the foregoing and related purposes, one or more aspects include the features described in detail hereinafter and particularly pointed out in the claims. The following description and the drawings set forth certain illustrative features of one or more aspects in detail. However, these features are merely indicative 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

[0018] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0019] Figure 2A 、 2B 、2C, and 2D are diagrams respectively illustrating examples of a first 5G / NR frame, a DL channel within a 5G / NR subframe, a second 5G / NR frame, and a UL channel within a 5G / NR subframe.

[0020] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0021] Figure 4 is a diagram of an example resource allocation in an access network.

[0022] Figure 5It is a diagram of another example resource allocation in the access network.

[0023] Figure 6 It is a diagram of a further example resource allocation in the access network.

[0024] Figure 7 It is a flowchart of a method for wireless communication by a UE associated with a pedestrian.

[0025] Figure 8 It is a flowchart of a method for wireless communication by a UE associated with a vehicle.

[0026] Figure 9 It is a diagram illustrating an example of the hardware implementation of an example device.

[0027] Figure 10 It is a diagram illustrating another example of the hardware implementation of another example device.

[0028] Detailed Description

[0029] The detailed description set forth below in connection with the appended 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. The detailed description includes specific details for the purpose of providing 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 obscuring such concepts.

[0030] Certain aspects of a telecommunications system will now be presented with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below and illustrated in the 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 upon the particular application and design constraints imposed on the overall system.

[0031] By way of example, an element, or any portion of an element, or any combination of elements can be implemented as a "processing system" that includes 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 a chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. One or more processors in the processing system can execute software. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to in software, firmware, middleware, microcode, hardware description language, or otherwise.

[0032] Accordingly, in one or more example embodiments, the described functions can be implemented in hardware, software, or any combination thereof. If implemented in software, the functions can be stored or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media can be any available media that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other media capable of storing computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0033] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes base stations 102, user equipment (UE) 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base stations 102 can include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0034] Base stations 102 configured for 4G Long Term Evolution (LTE) (collectively, 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., S1 interface). Base stations 102 configured for 5G New Radio (NR) (collectively, Next Generation RAN (NG-RAN)) can interface with the core network 190 via a second backhaul link 184. In addition to other functions, base stations 102 can also perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, 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 tracing, Radio Access Network Information Management (RIM), paging, positioning, and delivery of alert messages. Base stations 102 can communicate with each other directly or indirectly (e.g., via the EPC 160 or core network 190) on a third backhaul link 134 (e.g., X2 interface). The third backhaul link 134 can be wired or wireless.

[0035] Base station 102 can communicate wirelessly with UE 104. Each base station 102 can provide communication coverage for its respective geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network including both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include a Home evolved Node B (HeNB), which can serve a restricted group called a Closed Subscriber Group (CSG). The communication link 120 between base station 102 and UE 104 can include an uplink (UL) (also referred to as a reverse link) transmission from UE 104 to base station 102 and / or a downlink (DL) (also referred to as a forward link) transmission from base station 102 to UE 104. The communication link 120 can use multiple-input multiple-output (MIMO) antenna techniques, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links can be through one or more carriers. For each carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) for transmission in each direction, base station 102 / UE 104 can use a spectrum with a bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). These carriers may or may not be adjacent to each other. The allocation of carriers can be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL compared to UL). Component carriers can include a primary component carrier and one or more secondary component carriers. The primary component carrier can be referred to as the Primary Cell (PCell), and the secondary component carriers can be referred to as Secondary Cells (SCells).

[0036] Certain UEs 104 can communicate with each other using device-to-device (D2D) communication links 158. The D2D communication links 158 can use DL / UL WWAN spectrum. The D2D communication links 158 can use one or more sidelink channels, such as the Physical Sidelink Broadcast Channel (PSBCH), Physical Sidelink Discovery Channel (PSDCH), Physical Sidelink Shared Channel (PSSCH), and / or Physical Sidelink Feedback Channel (PSCCH). D2D communication can be through various wireless D2D communication systems, such as, by way of example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0037] The wireless communication system may further include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 in the 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) before communication to determine whether the channel is available.

[0038] The small cell 102' may operate in licensed and / or unlicensed spectrum. When operating in the unlicensed spectrum, the small cell 102' may adopt NR and use the same 5 GHz unlicensed spectrum as that used by the Wi-Fi AP 150. The small cell 102' adopting NR in the unlicensed spectrum may boost the coverage of the access network and / or increase the capacity of the access network.

[0039] Whether it is the 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 g Node B (gNB), or another type of base station. Some base stations (such as the gNB 180) may operate in the traditional sub-6 GHz spectrum, millimeter wave (mmW) frequencies, and / or near mmW frequencies to communicate with the UE 104. When the gNB 180 operates in mmW or near mmW frequencies, the gNB 180 may be referred to as an mmW base station. The extremely high frequency (EHF) is a part of the RF in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters. The radio waves in this frequency band may be referred to as millimeter waves. Near mmW may extend down to 3 GHz with a wavelength of 100 millimeters. The super high frequency (SHF) band extends between 3 GHz and 30 GHz, which is also referred to as centimeter waves. Communication using the mmW / near mmW radio frequency band (e.g., 3 GHz–300 GHz) has extremely high path loss and short range. The mmW base station 180 may utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short range. The base station 180 and the UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming.

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

[0041] EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 may be in communication with a Home Subscriber Server (HSS) 174. MME 162 is a control node that processes signaling between UE 104 and EPC 160. Generally, MME 162 provides bearer and connection management. All User Internet Protocol (IP) packets are passed through Serving Gateway 166, which itself is connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP services 176. IP services 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming services, and / or other IP services. BM-SC 170 may provide functions for MBMS user service provisioning and delivery. BM-SC 170 may act 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. MBMS Gateway 168 may be used to distribute MBMS traffic to base stations 102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area for a particular broadcast service, and may be responsible for session management (start / stop) and for collecting eMBMS-related charging information.

[0042] 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 processes signaling between the UE 104 and the core network 190. Generally, the AMF 192 provides QoS flow and session management. All User Internet Protocol (IP) packets are routed through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 191. The IP service 191 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a PS streaming service, and / or other IP services.

[0043] The base station may include and / or be referred to as a gNB, Node B, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), Transmission and Reception Point (TRP), or some other suitable term. The base station 102 provides an access point for the UE 104 to the EPC 160 or the core network 190. Examples of the UE 104 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop device, 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, a meter, a gas pump, a large or small kitchen appliance, a healthcare 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.). The 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 term.

[0044] Although the present disclosure may focus on 5G NR, the concepts and various aspects described herein may be applicable to other similar fields, such as LTE, advanced LTE (LTE-A), code division multiple access (CDMA), global system for mobile communications (GSM), or other wireless / radio access technologies. Additionally, although the present disclosure may focus on vehicle-to-pedestrian (V2P) communication and pedestrian-to-vehicle (P2V) communication, the concepts and various aspects described herein may be applicable to other similar fields, such as, D2D communication, IoT communication, vehicle-to-everything (V2X) communication, or other standards / protocols for communication in a wireless / access network.

[0045] Referring again to Figure 1 , in some aspects, the wireless communication system and access network 100 may include a UE 104 associated with a pedestrian (which may also be referred to as a PUE), and a UE 104' associated with a vehicle (which may also be referred to as a VUE). The PUE 104 and the VUE 104' may be configured to communicate on one or more sidelink channels, such as one or more of a PSBCH, PSDCH, PSSCH, PSCCH, and / or PSFCH. The signaling transmitted from the PUE 104 to the VUE 104' may be referred to as P2V communication, and the signaling transmitted from the VUE 104' to the PUE 104 may be referred to as V2P communication.

[0046] The VUE 104' may be configured to transmit a paging indicator 198 on a first resource set, the paging indicator 198 indicating that a paging message 199 is scheduled on a second resource set allocated for V2P communication that is contiguous with the first resource set. In one aspect, such as when the paging message 199 is intended for a group of UEs (e.g., all PUEs within the coverage area of the paging indicator transmission), the paging indicator 198 may include and / or may be based on a common sequence. In another aspect, such as when the paging message 199 is specifically intended for the PUE 104, the paging indicator 198 may include and / or may be based on a sequence that identifies the PUE 104.

[0047] Additionally, the VUE 104' may be configured to transmit the paging message 199 on the second resource set after transmitting the paging indicator 198. The paging message 199 may be associated with V2P communication. In some aspects, the second resource set may not be dedicated to V2P communication - for example, other types of communication may also occur on the second resource set, such as V2X communication.

[0048] According to one aspect, the first resource set may be included in a third resource set allocated for P2V communication, and the first resource set may include the last symbol of the third resource set. In such aspects, the third resource set may further include a gap symbol coherently before the last symbol, and the gap symbol may allow the PUE 104 to transition from a transmit mode to a receive mode (e.g., the PUE 104 may reduce the power of the transmitter and increase the power of the receiver, and / or the PUE 104 may turn off one or more transmit chains and turn on one or more receive chains).

[0049] According to another aspect, the first resource set may be included in a fourth resource set allocated for PSFCH. In such aspects, the third resource set allocated for P2V communication may be before the fourth resource set and may be separated from the fourth resource set by a set of time slots not monitored by the PUE 104.

[0050] Accordingly, the PUE 104 may be configured to monitor the first resource set to detect a paging indicator 198, where the paging indicator 198 indicates that a paging message 199 is carried on a second resource set allocated for V2P communication that is coherent with the first resource set. When the PUE 104 detects the paging indicator 198, the PUE 104 may be configured to decode the information on the second resource set to detect the paging message 199 from the VUE 104'. In some aspects, the PUE 104 may decode the information on each symbol on each subchannel of the second resource set allocated for V2P communication in order to detect the paging message 199.

[0051] When the PUE 104 does not detect the paging indicator 198 (e.g., when the VUE 104' does not transmit the paging indicator 198), the PUE may be configured to suppress decoding the information on the second resource set. For example, when the PUE 104 does not detect the paging indicator 198, the PUE 104 may be configured to transition from a high power state to a low power state, and the PUE 104 may operate in the high power state when monitoring the first resource set.

[0052] In some further aspects, the PUE 104 may be configured to transmit information 197 associated with P2V communication on the third resource set, which may be dedicated to P2V communication - for example, the third resource set may be dedicated to P2V communication because only P2V communication may be carried on the third resource set. Accordingly, the third resource set may be non-overlapping with the second resource set, and the second resource set may not be dedicated to V2P communication. Accordingly, the VUE 104' may be configured to receive information 197 associated with P2V communication from the PUE 104 on the third resource set dedicated to P2V communication.

[0053] According to various aspects, one or more of the foregoing first, second, third, and / or fourth resource sets may include time resources, frequency resources, code resources, and / or any combination thereof.

[0054] Figure 2A FIG. 200 is an illustration of an example of a first subframe within a 5G / NR frame structure. Figure 2B FIG. 230 is an illustration of an example of a DL channel within a 5G / NR subframe. Figure 2C FIG. 250 is an illustration of an example of a second subframe within a 5G / NR frame structure. Figure 2D FIG. 280 is an illustration of an example of a UL channel within a 5G / NR subframe. The 5G / NR frame structure may be FDD, where for a particular subcarrier set (carrier system bandwidth), the subframes within that subcarrier set are dedicated to DL or UL; or it may be TDD, where for a particular subcarrier set (carrier system bandwidth), the subframes within that subcarrier set are dedicated to both DL and UL. In the example provided by Figure 2A 、 2C the 5G / NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL) and subframe 3 is configured with slot format 34 (mostly UL), where D is DL, U is UL, and X is for flexible use between DL / UL. Although subframes 3 and 4 are shown as having slot formats 34 and 28 respectively, any particular subframe may be configured with any one of the various available slot formats 0 - 61. Slot formats 0 and 1 are all-DL and all-UL respectively. The other slot formats 2 - 61 include a mixture of DL, UL, and flexible symbols. The UE is configured with a slot format (dynamically configured via DL control information (DCI), or semi-statically / statically configured via radio resource control (RRC) signaling) by the received slot format indicator (SFI). Note that the following description also applies to a 5G / NR frame structure that is TDD.

[0055] Other wireless communication technologies may have different frame structures and / or different channels. A frame (10 ms) may be divided into 10 equal-sized subframes (1 ms). Each subframe may include one or more time slots. The subframe may also include mini time slots, which may include 7, 4, or 2 symbols. Each time slot may include 7 or 14 symbols, depending on the time slot configuration. For time slot configuration 0, each time slot may include 14 symbols, while for time slot configuration 1, each time slot may include 7 symbols. The symbols on the DL may be cyclic prefix (CP) OFDM (CP-OFDM) symbols. The symbols on the UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also known as single carrier frequency division multiple access (SC-FDMA) symbols) (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the time slot configuration and numerology. For time slot configuration 0, different numerologies μ from 0 to 5 respectively allow 1, 2, 4, 8, 16, and 32 time slots per subframe. For time slot configuration 1, different numerologies from 0 to 2 respectively allow 2, 4, and 8 time slots per subframe. Accordingly, for time slot configuration 0 and numerology μ, there are 14 symbols per time slot and 2 μ time slots per subframe. The subcarrier spacing and symbol length / duration are dependent on the numerology. The subcarrier spacing may be equal to 2 μ *15 kHz, where μ is the numerology from 0 to 5. Thus, numerology μ = 0 has a subcarrier spacing of 15 kHz, while numerology μ = 5 has a subcarrier spacing of 480 kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A - 2D An example of time slot configuration 0 with 14 symbols per time slot and numerology μ = 2 with 4 time slots per subframe is provided. The time slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs.

[0056] A resource grid may be used to represent the frame structure. Each time slot includes a resource block (RB) (also known as a physical RB (PRB)) that extends over 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0057] As Figure 2A explained, some REs carry reference (pilot) signals (RSs) for the UE. The RS may include demodulation RS (DM-RS) for channel estimation at the UE (indicated as R x , where 100x is the port number, but other DM-RS configurations are possible) and channel state information reference signal (CSI-RS). The RS may also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0058] Figure 2B Examples of various DL channels within a subframe of a decoded frame. The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs), each CCE including 9 Resource Element Groups (REGs), each REG including 4 consecutive Resource Elements (REs) in an OFDM symbol. The Primary Synchronization Signal (PSS) may be in symbol 2 of a specific subframe of a frame. The PSS is used by the UE 104 to determine subframe / symbol timing and the physical layer identity. The Secondary Synchronization Signal (SSS) may be in symbol 4 of a specific subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE may determine the Physical Cell Identifier (PCI). Based on the PCI, the UE may determine the location of the aforementioned DM-RS. The Physical Broadcast Channel (PBCH) carrying the Master Information Block (MIB) may be logically grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block. The MIB provides the number of Resource Blocks (RBs) in the system bandwidth and the System Frame Number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not transmitted via the PBCH (such as System Information Blocks (SIBs)), and paging messages.

[0059] As explained in Figure 2C Some REs carry DM-RS for channel estimation at the base station (indicated as R for one specific configuration, but other DM-RS configurations are possible). The UE may transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS may be transmitted in the previous or the previous two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether a short PUCCH or a long PUCCH is transmitted and depending on the specific PUCCH format used. The UE may transmit a Sounding Reference Signal (SRS). The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and the UE may transmit the SRS on one of the combs. The SRS may be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0060] Figure 2DExamples of various UL channels within a subframe of a demodulation reference signal. The PUCCH may be located at the position indicated in one configuration. The PUCCH carries uplink control information (UCI), such as a scheduling request, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0061] Figure 3 is a block diagram of a base station 310 and a UE 350 in communication in an access network. In the DL, IP packets from the EPC 160 may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes the radio resource control (RRC) layer, and layer 2 includes the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, and the media access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with the broadcast of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reports; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs), error correction via ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and re-ordering of RLC data PDUs; and MAC layer functionality associated with the mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority differentiation.

[0062] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes 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 encoded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to OFDM subcarriers, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a stream of time-domain OFDM symbols. The OFDM stream is space precoded to generate multiple spatial streams. Channel estimates from the channel estimator 374 may be used to determine the encoding and modulation schemes and for spatial processing. The channel estimates may be derived from reference signals transmitted by the UE 350 and / or channel status feedback. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX modulates an RF carrier with the corresponding spatial stream for transmission.

[0063] At the UE 350, each receiver 354RX receives signals via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to the 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 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If there are multiple spatial streams destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a fast Fourier transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal 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 points most likely transmitted by the base station 310. These soft decisions may be based on the channel estimates calculated by the channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the original data and control signals transmitted by the base station 310 on the physical channel. These data and control signals are then provided to the controller / processor 359 that implements layer 3 and layer 2 functionality.

[0064] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport channels and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0065] Similar to the functionality described in connection with DL transmissions performed by the base station 310, the controller / processor 359 provides 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 (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with transfer of upper layer PDUs, error correction via ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and re-ordering 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 via HARQ, priority handling, and logical channel prioritization.

[0066] Channel estimates derived by the channel estimator 358 from reference signals or feedback transmitted by the base station 310 may be used by the TX processor 368 to select an appropriate coding and modulation scheme 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 respective spatial stream for transmission.

[0067] UL transmissions are processed at the base station 310 in a manner similar to that described in connection with the receiver functionality at the UE 350. Each receiver 318RX receives signals via its respective corresponding antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0068] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport channels and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the UE 350. The IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0069] In various aspects, Figure 1 each of the PUE 104 and / or VUE 104' may be implemented as the UE 350. Accordingly, at least one of the TX processor 368, RX processor 356, and controller / processor 359 may be configured to perform aspects associated with Figure 1 the P2V information 197, V2P paging indicator 198, and / or V2P paging message 199 of

[0070] As previously mentioned, V2P communication may refer to communication transmitted from a UE associated with a vehicle (also referred to as a VUE) to another UE associated with a pedestrian (also referred to as a PUE). Accordingly, P2V communication may refer to communication transmitted from a PUE to a VUE.

[0071] V2P communication may be used for pedestrian safety. For example, a VUE may use V2P communication to notify a PUE that both are on a collision course. Additionally, P2V communication may further contribute to the safety of pedestrians and / or vehicles. For example, P2V communication may be used by a PUE to notify a VUE of the PUE's location and / or intended travel route.

[0072] In some aspects, one or both of V2P and / or P2V communication may be relatively infrequent. However, one or both of V2P and / or P2V communication may still rely on relatively low latency in order to contribute to the safety of pedestrians and / or vehicles. Additionally, a PUE may be subject to some power constraints and may therefore not be able to continuously monitor V2P communication. Accordingly, there is a need for efficient and reliable methods and solutions for V2P and / or P2V communication.

[0073] The present disclosure provides various methods and solutions for resource allocation for PUEs and VUEs. For example, the present disclosure describes various methods and solutions for allocating resources for a VUE to notify a PUE considering safety (e.g., low latency and reliability) and power consumption (e.g., of the PUE).

[0074] Figure 4FIG. 400 is a diagram illustrating an example resource allocation for an access network. In the example resource allocation 400, a resource pool 410 allocated for one or both of P2V and / or V2P communications may be multiplexed (e.g., time-division multiplexed) with other resource pools 412 not allocated for P2V or V2P communications. For example, the P2V / V2P pool 410 may include a set of one or more time slots that occur at every Wth time slot of the non-P2V / V2P pool 412. In one aspect, W may be preconfigured (e.g., defined by one or more standards and / or technical specifications, such as those promulgated by 3GPP). In another aspect, W may be configured by a base station such as a gNB or other macro base station (e.g., Figure 1 base station 102 / 180) of FIG. 180, and may be signaled to PUEs and / or VUEs operating within the coverage of the base station.

[0075] Within the P2V / V2P pool 410, resources may be allocated between P2V communications and V2P communications. For example, the P2V / V2P pool 410 may include a P2V pool 420, a paging indicator pool 422, and a V2P pool 424. Each of the P2V pool 420, the paging indicator pool 422, and the V2P pool 424 may include time resources, frequency resources, code resources, and / or any combination thereof.

[0076] In some aspects, the P2V pool 420 may occupy the first m1 time slots of the P2V / V2P pool 410 in the time domain. In the frequency domain, the P2V pool 420 may span f1 subchannels. The f1 subchannels may be contiguous (e.g., as illustrated), non-contiguous, or a combination of some contiguous subchannels and some non-contiguous subchannels.

[0077] The P2V pool 420 may be dedicated to P2V communications, where PUEs are allowed to transmit to VUEs. Thus, other types of communications, such as V2X and V2P communications, may be prohibited during the P2V pool 420. For example, referring to Figure 1 FIG. 185, PUE 104 may transmit P2V information 197 to VUE 104' on one or more of the f1 subchannels during at least a portion of one or more of the m1 time slots. The P2V information 197 may include data and / or control information associated with P2V communications. VUE 104' may receive the P2V information 197 by decoding all or a subset of the symbols of the m1 time slots on all or a subset of the f1 subchannels.

[0078] In one aspect, the PUE 104 may perform carrier sensing to transmit the P2V information 197. That is, the PUE 104 may first determine that one or more of the f1 subchannels on which the PUE 104 will transmit the P2V information 197 are not occupied (e.g., by other P2V communication signaling). If the PUE 104 determines that one or more of the f1 subchannels on which the PUE 104 will transmit the P2V information 197 are not occupied, the PUE 104 may transmit the P2V information 197 on one or more of those f1 subchannels determined to be unoccupied. However, if the PUE 104 determines that one or more of the f1 subchannels on which the PUE 104 will transmit the P2V information 197 are occupied, the PUE 104 may suppress transmission before performing carrier sensing again and may wait (e.g., a preconfigured time period) and / or the PUE 104 may select a different set of f1 subchannels on which to perform carrier sensing.

[0079] In another aspect, the PUE 104 may randomly (or pseudo-randomly) select one or more of the f1 subchannels on which to transmit the P2V information 197. The PUE 104 may then transmit the P2V information 197 on one or more of those randomly (or pseudo-randomly) selected f1 subchannels.

[0080] After m1 time slots, a paging indicator pool 422 may be allocated for a paging indicator (e.g., Figure 1 the paging indicator 198). The paging indicator pool 422 may occupy m0 symbols spanning f0 PRBs in a time slot. The f0 PRBs may include contiguous subchannels (e.g., as illustrated), non-contiguous subchannels, or a combination of some contiguous subchannels and some non-contiguous subchannels. Additionally, the f0 PRBs may include the same subchannels as the f1 subchannels (e.g., as illustrated), or the f0 PRBs may include a set of subchannels that overlap with the f1 subchannels and a set on non-overlapping subchannels, or the f0 PRBs may include a set of subchannels that are completely non-overlapping with the f1 subchannels.

[0081] In some aspects, the m0 symbols may be one (1) symbol. In other aspects, the m0 symbols may include more than one symbol. In further aspects, the m0 symbols may be a portion of a symbol, such as half of a symbol.

[0082] The paging indicator pool 422 may be dedicated to paging indicators associated with V2P communication. Thus, other types of communication, including P2V communication and non-paging indicator V2P communication, may be prohibited during the paging indicator pool 422. For example, with reference to Figure 1When the VUE 104' has a paging message 199 to be transmitted to the PUE 104, the VUE 104' can transmit a paging indicator 198 on the f0 PRBs (on the m0 symbols).

[0083] The m2 time slots of the V2P pool 424 can coherently follow the paging indicator pool 422 in the time domain. In the time domain, the m1 time slots of the P2V pool 420, the m0 symbols of the paging indicator pool 422, and the m2 symbols of the V2P pool 424 can be non - overlapping.

[0084] The V2P pool 424 can span f2 sub - channels in the frequency domain. The f2 sub - channels can be contiguous (e.g., as illustrated), non - contiguous, or a combination of some contiguous sub - channels and some non - contiguous sub - channels. Potentially, the f2 sub - channels can span the entire available system bandwidth. Additionally, the f2 sub - channels can include the same sub - channels as the f1 sub - channels (e.g., as illustrated), or can include a set of sub - channels that overlap with the f1 sub - channels and a set on non - overlapping sub - channels, or the f2 sub - channels can include a set of sub - channels that are completely non - overlapping with the f1 sub - channels.

[0085] The V2P pool 424 can be non - dedicated to V2P communication, where VUEs are allowed to transmit to the PUE. Thus, other types of communication, such as V2X or other P2V communication, can be allowed during the V2P pool 424. For example, referring to Figure 1 the VUE 104' can transmit a V2P paging message 199 to the PUE 104 on one or more of the f2 sub - channels during at least a portion of one or more of the m2 time slots.

[0086] According to some aspects, one or more of the foregoing m0, m1, m2, f0, f1, and / or f2 can be pre - configured. For example, one or more standards and / or technical specifications (such as those promulgated by 3GPP) define m0, m1, m2, f0, f1, and / or f2. According to some other aspects, m0, m1, m2, f0, f1, and / or f2 can be configured by a base station such as a gNB or other macro - base station (e.g., Figure 1 the base station 102 / 180) and can be signaled to the PUEs and / or VUEs operating within the coverage of the base station.

[0087] In Figure 1In the context of, VUE 104' can determine whether the paging message 199 is to be transmitted to PUE 104. For example, VUE 104' can determine that VUE 104' and PUE 104 are on a collision course, and thus can determine that VUE 104' should transmit the paging message 199 to PUE 104, for example, to notify PUE 104 of the collision course. When VUE 104' determines that VUE104' should transmit the paging message 199 to PUE 104, VUE 104' can generate a paging indicator 198.

[0088] VUE 104' can generate the paging indicator 198 based on a sequence. In one aspect, VUE 104' can generate the paging indicator 198 based on a common sequence (such as a sequence generally known to the PUE). When the paging message is intended for all PUEs and / or any PUE within the transmission coverage area of VUE 104', VUE 104' can generate the paging indicator 198 based on this common sequence.

[0089] In another aspect, VUE 104' can generate the paging indicator 198 based on a specific sequence (such as a sequence based on information identifying PUE 104). When the paging message 199 is intended for a specific UE (e.g., PUE 104), VUE 104' can generate the paging indicator 198 based on the specific sequence. By generating the paging indicator 198 based on the specific sequence, VUE 104' can indicate that the paging indicator 198 and the subsequent paging message 199 are intended for the PUE specifically identified by the specific sequence.

[0090] VUE 104' can then transmit the paging indicator 198 in the paging indicator pool 422. In other words, VUE 104' can transmit the paging indicator 198 on the f0 PRBs (on m0 symbols). However, when VUE 104' determines that it has no paging message to transmit, VUE 104' can suppress the transmission of the paging indicator 198, and thus the resources of the paging indicator pool 422 can be empty and not occupied by the communication associated with V2P. Although the paging indicator pool 422 can be empty and there can be associated V2P communication, the V2P pool resources 424 with m2 time slots having f2 sub-channels can be used for communication between vehicles (such as vehicle-to-vehicle (V2V) communication).

[0091] When VUE 104' determines that VUE 104' has a paging message 199 to transmit and subsequently transmits a paging indicator 198, VUE 104' can generate the paging message 199. The V2P paging message 199 can include data and / or control information associated with V2P communication. For example, the paging message 199 can notify the PUE 104 of security-related information, such as a potential collision route between VUE 104' and PUE104. VUE 104' can then transmit the generated paging message 199 on one or more of the f2 sub-channels during at least a portion of one or more of the m2 time slots.

[0092] Accordingly, the PUE 104 can be configured to monitor the paging indicator pool 422 each time it appears. For example, the PUE 104 can operate in a relatively high power or "awake" state to receive and decode the m0 symbols (on f0 PRBs). When the PUE 104 detects the paging indicator 198 in the paging indicator pool 422, the PUE 104 can remain in the high power / wake state for m2 time slots. The PUE 104 can then decode the information on each symbol of the m2 time slots on each of the f2 sub-channels. For example, when the PUE 104 detects the paging indicator 198, the PUE 104 can receive and decode all resources of the V2P pool 424 because multiple VUEs may be transmitting paging messages, and thus the PUE 104 can attempt to detect each of the multiple paging messages.

[0093] When the PUE 104 receives and decodes the paging message 199, the PUE 104 can perform a set of operations associated with the paging message 199. For example, the PUE 104 can provide an alert to a pedestrian associated with the PUE 104, such as an audio, visual, and / or tactile alert notifying the pedestrian of a potential collision route with VUE104'.

[0094] However, when the PUE 104 does not detect the paging indicator 198 in the paging indicator pool 422, the PUE 104 can suppress receiving and decoding any resources of the V2P pool 424. However, V2V communication can still occur in the V2P pool 424. For example, the PUE104 can transition from the high power / wake state to a relatively low power or "sleep" state, which can save some power of the PUE 104.

[0095] Refer to Figure 5, The illustration depicts an example resource allocation 500 for P2V / V2P communication. In the example resource allocation 500, m0 symbols of the paging indicator pool 422 can be allocated from the P2V pool 420 in the time domain. As illustrated, the paging indicator can be allocated on at least one symbol 524 of the last time slot m1 542a of the P2V pool 420. For example, depending on the configured parameter set, the paging indicator symbol 524 can be allocated to occupy at least the fourteenth symbol of the last time slot m1 542a of the P2V pool 420.

[0096] When the paging indicator symbol 524 is allocated to occupy at least the last symbol of the last time slot m1 542a of the P2V pool 420, at least one symbol coherently before the allocated paging indicator symbol 524 can be configured as a gap symbol 522. For example, depending on the configured parameter set, the gap symbol 522 can be allocated to occupy the thirteenth symbol of the last time slot m1 542a of the P2V pool 420. Thus, the number of P2V pool symbols 520 of the last time slot m1 542a can be reduced by the gap symbol 522 and the paging indicator symbol 524 (e.g., by two when m0 symbols of the paging indicator pool 422 is one).

[0097] The gap symbol 522 can allow the PUE 104 to transition from the transmission mode to the reception mode. For example, the PUE 104 can reduce the power to the transmitter and increase the power to the receiver, and / or the PUE 104 can turn off one or more transmit chains and turn on one or more receive chains during the gap symbol 522. In some instances, the gap symbol 522 can additionally allow the VUE 104' to transition from the reception mode to the transmission mode. For example, the VUE 104' can increase the power to the transmitter and decrease the power to the receiver, and / or the VUE 104’ can turn off one or more receive chains and turn on one or more transmit chains during the gap symbol 522.

[0098] The first time slot 546a of the V2P pool 424 can coherently follow the paging indicator symbol 524 in the time domain. Accordingly, the V2P pool symbols 526 can coherently occupy the next m2 time slots in the time domain until the last time slot m2 546b of the V2P pool 424 appears in the time domain. Thus, according to the example resource allocation 500, the m1 time slots of the P2V pool 420, the gap symbol 522, the m0 symbols of the paging indicator pool 422, and the V2P pool 424 can be non-overlapping and coherent in time.

[0099] Refer to Figure 6, The illustration depicts another example resource allocation 600 for P2V / V2P communication. In the example resource allocation 600, m0 symbols of the paging indicator pool 422 can be allocated in the time domain from the time slot 644 that includes the PSFCH. The PSFCH symbols 628 can be configured on the last two symbols (e.g., symbol index 12 and symbol index 13) of every N time slots (e.g., 1, 2, or 4 time slots).

[0100] As illustrated, the paging indicator can be allocated on at least one symbol 624 of the time slot 644 that includes the PSFCH, and can be allocated from one or more symbols 628 that are allocated for the PSFCH. For example, depending on the configured parameter set, the paging indicator symbol 624 can be allocated to occupy at least the thirteenth symbol (e.g., symbol index 12) of the time slot 644 that includes the PSFCH, and thus, can be coherently after at least one PSFCH symbol 628.

[0101] Since the paging indicator symbol 624 can be not allocated from the last time slot m1 642a of the P2V pool 420, the number of P2V pool symbols 620 can remain non - decreased. Additionally, the gap symbol can be unnecessary because the PUE 104 can be able to switch from the transmission mode to the reception mode during the time slot 644 that includes the PSFCH and / or one or more other time slots that separate the last time slot m1 642a of the P2V pool 420 from the time slot 644 that includes the PSFCH. For example, the PUE 104 can suppress monitoring (e.g., receiving and decoding) the time slot 644 that includes the PSFCH (and one or more intermediate time slots that coherently follow after the last time slot m1 642a of the P2V pool 420), except for the paging indicator symbol 624 (and potentially the PSFCH symbol 628).

[0102] In some instances, the VUE 104' can also be able to switch from the reception mode to the transmission mode during the time slot 644 that includes the PSFCH. The VUE 104' can transmit the paging indicator 198 in one or more PRBs of the (one or more) PSFCH symbols 628 because at least one of the (one or more) PSFCH symbols 628 can be allocated as the paging indicator symbol 624.

[0103] The first time slot 646a of the V2P pool 424 can coherently follow the PSFCH time slot 644 in the time domain. Accordingly, the V2P pool symbol 626 can coherently occupy the next m2 time slots in the time domain until the last time slot m2646b of the V2P pool 424 appears in the time domain. Thus, the m1 time slots of the P2V pool 420 can be non-overlapping and non-coherent in time with the m0 symbols of the paging indicator pool 422 and the V2P pool 424; the m0 symbols of the paging indicator pool 422 and the V2P pool 424 can be non-overlapping in time but can be coherent or non-coherent, depending on whether there is a gap symbol after the PSFCH symbol 628 configured for V2P.

[0104] Figure 7 is a flowchart of a wireless communication method 700. The method 700 can be performed by a first UE (e.g., PUE 104 / UE 350), which can include a memory 360 and which can be the entire PUE 104 / UE 350 or a component of the PUE 104 / UE 350 (such as the TX processor 368, the RX processor 356, and / or the controller / processor 359).

[0105] At 702, the first UE can transmit information associated with P2V communication on a first resource set dedicated to P2V communication. For example, the first UE can perform carrier sensing on one or more resources of the P2V pool or can (pseudo) randomly select one or more resources of the P2V pool, and the first UE can transmit information associated with P2V communication on one or more resources of the selected P2V dedicated pool. In Figure 1 and Figure 4 context, the PUE 104 can transmit P2V information 197 to the VUE104' on the resources of the P2V pool 420. Referring to Figures 5 - 6 , the PUE 104 can transmit P2V information 197 on the last time slots m1 542a, 642a of the P2V pool 420.

[0106] At 704, the first UE can monitor a second resource set to detect a paging indicator that indicates that a paging message is carried on a third resource set allocated for V2P communication that is coherent with the second resource set. The third resource set can be non-overlapping with both the first resource set and the second resource set. The paging indicator can include or can be based on either a common sequence or a sequence based on information identifying the first UE. In Figure 1 and Figure 4 context, the PUE 104 can monitor the resources of the paging indicator pool 422 to detect a paging indicator 198 that indicates that a paging message 199 is carried on the resources of the V2P pool 424 that are coherent in time with the paging indicator pool 422.

[0107] In one aspect, a second resource set may be included in a first resource set allocated for P2V communication, and the second resource set may include the last symbol of the first resource set. In such aspects, the first resource set may further include gap symbols that are temporally coherent and before the last symbol. Refer to Figure 5 , PUE 104 may monitor a paging indicator symbol 524, and the paging indicator symbol 524 may occupy the last symbol of the last time slot m1 542a of the P2V pool 420.

[0108] In another aspect, a second resource set may be included in a fourth resource set allocated for PSFCH. In such aspects, the first resource set allocated for P2V communication may be temporally before the fourth resource set, and the fourth resource set may be a set of time slots that are separated from the first resource set allocated for P2V communication and not monitored by the first UE. Refer to Figure 6 , PUE 104 may monitor a paging indicator symbol 624, and the paging indicator symbol 624 may be allocated from the PSFCH symbol 628 in a time slot 644 that includes the PSFCH symbol 628. In addition to the paging indicator symbol 624, PUE 104 may refrain from monitoring the time slot 644 that includes the PSFCH symbol 628.

[0109] At 706, when a paging indicator is detected on the second resource set, the first UE may decode the information on the third resource set to detect a paging message from the second UE. The paging message may be associated with V2P communication. The first UE may decode the information on each symbol on each subchannel of the third resource set allocated for V2P communication, for example, in order to detect any paging message transmitted by any second UE. In Figure 1 and Figure 4 's context, when a paging indicator 198 is detected on the resources of the paging indicator pool 422, PUE 104 may decode the resources of the V2P pool 424 to detect a paging message 199 from the VUE 104'. Refer to Figures 5 - 6 , when a paging indicator 198 is detected on the paging indicator symbols 524, 624, PUE104 may decode the time slots 546a-b, 646a-b of the V2P pool 424 to detect a paging message 199 from the VUE 104'.

[0110] At 708, when a paging indicator is not detected on the second resource set, the first UE may refrain from decoding the third resource set. For example, at 710, when a paging indicator is not detected on the second resource set, the first UE may transition from a high power state to a low power state, and the first UE may be in a high power state when monitoring the second resource set. InFigure 1 and Figure 4 In the context of Figure 4 , when the paging indicator 198 is not detected on the resources of the paging indicator pool 422, the PUE 104 may suppress decoding the resources of the V2P pool 424. Referring to Figures 5 - 6 , when the paging indicator 198 is not detected on the paging indicator symbols 524, 624, the PUE 104 may suppress decoding the time slots 546a-b, 646a-b of the V2P pool 424.

[0111] Figure 8 is a flowchart of a wireless communication method 800. The method 800 may be performed by a second UE (e.g., VUE 104' / UE 350), which may include a memory 360 and which may be the entire VUE 104' / UE 350 or a component of the VUE 104' / UE 350 (such as the TX processor 368, the RX processor 356, and / or the controller / processor 359).

[0112] At 802, the second UE may receive information associated with P2V communication from the first UE on a first resource set dedicated to P2V communication. In Figure 1 and Figure 4 In the context of Figure 4 , the VUE 104' may receive the P2V information 197 from the PUE 104 on the resources of the P2V pool 420. Referring to Figures 5 - 6 , the VUE 104' may receive the P2V information 197 from the PUE104 on the last time slots m1 542a, 642a of the P2V pool 420.

[0113] At 804, the second UE may transmit a paging indicator on a second resource set to indicate that a paging message is scheduled on a third resource set allocated for V2P communication that is contiguous with the second resource set. The third resource set may be non-overlapping with both the first resource set and the second resource set. The paging indicator may include or may be based on either a common sequence or a sequence based on information identifying the first UE. In Figure 1 and Figure 4 In the context of Figure 4 , the VUE 104' may transmit the paging indicator 198 on the resources of the paging indicator pool 422 to indicate that the paging message 199 is carried on the resources of the V2P pool 424 that are contiguous in time with the paging indicator pool 422.

[0114] In one aspect, the second resource set may be included in the first resource set allocated for P2V communication, and the second resource set may include the last symbol of the first resource set. In such aspects, the first resource set may further include gap symbols that are contiguous in time before the last symbol. Referring to Figure 5, VUE 104’ can transmit a paging indicator 198 on paging indicator symbol 524, which can occupy the last symbol of the last time slot m1 542a of the P2V pool 420.

[0115] On the other hand, a second resource set can be included in a fourth resource set allocated for the PSFCH. In such aspects, a first resource set allocated for P2V communication can be before the fourth resource set in time, and the fourth resource set can be a set of time slots that are separated from the first resource set allocated for P2V communication and not monitored by the first UE. Refer to Figure 6 , VUE 104’ can transmit a paging indicator 198 on paging indicator symbol 624, and the paging indicator symbol 624 can be allocated from the PSFCH symbol 628 in time slot 644 containing the PSFCH symbol 628.

[0116] At 806, the second UE can transmit a paging message on a third resource set after transmitting the paging indicator on the second resource set. The paging message can be associated with V2P communication. In Figure 1 and Figure 4 context, VUE 104' can transmit a paging message 199 on the resources of the V2P pool 424 after transmitting the paging indicator 198. Refer to Figures 5 - 6 , after transmitting the paging indicator 198 on paging indicator symbols 524, 624, VUE 104' can transmit a paging message 199 on time slots 546a-b, 646a-b of the V2P pool 424.

[0117] Figure 9FIG. 900 is a diagram illustrating an example of a hardware implementation of an apparatus 902. The apparatus 902 is a UE and includes a cellular baseband processor 904 (also referred to as a modem) coupled to a cellular RF transceiver 922 and one or more subscriber identity module (SIM) cards 920, an application processor 906 coupled to a Secure Digital (SD) card 908 and a screen 910, a Bluetooth module 912, a Wireless Local Area Network (WLAN) module 914, a Global Positioning System (GPS) module 916, and a power supply 918. The cellular baseband processor 904 communicates with the UE 104 and / or the base station 102 / 180 via the cellular RF transceiver 922. The cellular baseband processor 904 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-transitory. The cellular baseband processor 904 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor 904, causes the cellular baseband processor 904 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 904 when executing the software. The cellular baseband processor 904 further includes a receiving component 930, a communication manager 932, and a transmitting component 934. The communication manager 932 includes the one or more illustrated components. The components within the communication manager 932 may be stored in the computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 904. The cellular baseband processor 904 may be a component of the UE 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 apparatus 902 may be a modem chip and include only the baseband processor 904, and in another configuration, the apparatus 902 may be the entire UE (e.g., Figure 3 the UE 350) and include the foregoing additional modules of the apparatus 902.

[0118] In some aspects, the transmitting component 934 may be configured to transmit information associated with P2V communication on a first resource set dedicated to P2V communication, e.g., as described in connection with Figure 7 702.

[0119] The communication manager 932 may include a monitoring component 940 configured to monitor a second resource set to detect a paging indicator indicating that a paging message is carried on a third resource set allocated for V2P communication that is contiguous with the second resource set—the third resource set being non-overlapping with the second resource set, e.g., as described in connection with Figure 7 704.

[0120] The communication manager 932 may further include a detection component 942 that may receive an input from the monitoring component 940 and may be configured to detect a paging indicator on a second resource set, the paging indicator indicating that a paging message is carried on a third resource set that is allocated for V2P communication and is contiguous with the second resource set.

[0121] The detection component 942 may provide information to one or more other components of the communication manager 932, such as a decoding component 944, a suppression component 946, and / or a conversion component 948, based on, for example, whether the paging indicator is detected.

[0122] When the paging indicator is detected, the decoding component 944 may be configured to decode the information on the third resource set to detect the paging message, which may be associated with V2P communication, for example, as described in Figure 7 706 in connection with

[0123] When the paging indicator is detected, the suppression component 946 may be configured to suppress decoding the information on the third resource set to detect the paging message, which may be associated with V2P communication, for example, as described in Figure 7 708 in connection with Figure 7 In some aspects, the conversion component 948 may subsequently transition one or more components of the device 902 from a high power state to a low power state, as the device 902 may be in a high power state when monitoring resources, for example, as described in

[0124] The device 902 may include additional components that perform all or some of the blocks, operations, signaling, etc. of the algorithms in the foregoing flowcharts of Figure 7 Accordingly, all or some of the blocks, operations, signaling, etc. in the foregoing flowcharts of Figure 7 may be performed by a component and the device 902 may include one or more of those components. These components may be one or more hardware components specifically configured to perform the processes / algorithms, implemented by a processor configured to perform the processes / algorithms, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0125] In one configuration, the device 902, and particularly the cellular baseband processor 904, includes: means for monitoring a first resource set to detect a paging indicator that indicates that a paging message is carried on a second resource set that is allocated for V2P communication and is contiguous in time with the first resource set; means for decoding the information on the second resource set to detect a paging message from a second UE when the paging indicator is detected, the paging message being associated with V2P communication; and means for suppressing decoding the information on the second resource set when the paging indicator is not detected.

[0126] In some aspects, the first resource set is included in a third resource set allocated for P2V communication, and the first resource set includes the last symbol of the third resource set.

[0127] In one aspect, the third resource set includes gap symbols coherently before the last symbol.

[0128] In one aspect, the first resource set is included in a third resource set allocated for PSFCH.

[0129] In one aspect, a fourth resource set allocated for P2V communication and temporally before the third resource set is separated from the third resource set by a set of time slots not monitored by device 902.

[0130] In one aspect, the paging indicator includes one of a common sequence or a sequence based on information identifying device 902.

[0131] In one configuration, device 902 and in particular cellular baseband processor 904 may further include means for transmitting information associated with P2V communication on a third resource set dedicated to P2V communication, and the third resource set does not overlap in time with the second resource set.

[0132] In one aspect, the information associated with P2V communication is transmitted on the third resource set based on one of random selection or carrier sensing.

[0133] In one aspect, the second resource set is not dedicated to V2P communication so as to allow other types of communication, and the third resource set is dedicated to P2V communication so as to prohibit other types of communication.

[0134] In one aspect, the information on each symbol on each subchannel of the second resource set allocated for V2P communication is decoded.

[0135] In one aspect, the means for suppressing decoding of information on the second resource set when no paging indicator is detected is configured to: transition from a high power state to a low power state, and device 902 is in the high power state when monitoring the first resource set.

[0136] In one aspect, each of the first and second resource sets includes a time resource set, a frequency resource set, a code resource set, or any combination thereof.

[0137] The foregoing apparatus can be one or more of the foregoing components in device 902 that are configured to perform the functions recited by the foregoing apparatus. As described above, device 902 can include TX processor 368, RX processor 356, and controller / processor 359. Thus, in one configuration, the foregoing apparatus can be TX processor 368, RX processor 356, and controller / processor 359 that are configured to perform the functions recited by the foregoing apparatus.

[0138] Figure 10 FIG. 1000 is a diagram illustrating an example of a hardware implementation of device 1002. The device 1002 is a UE and includes a cellular baseband processor 1004 (also referred to as a modem) coupled to a cellular RF transceiver 1022 and one or more subscriber identity module (SIM) cards 1020, an application processor 1006 coupled to a secure digital (SD) card 1008 and a screen 1010, a Bluetooth module 1012, a wireless local area network (WLAN) module 1014, a global positioning system (GPS) module 1016, and a power supply 1018. The cellular baseband processor 1004 communicates with UE 104 and / or base station 102 / 180 via the cellular RF transceiver 1022. The cellular baseband processor 1004 can include a computer-readable medium / memory. The computer-readable medium / memory can be non-transitory. The cellular baseband processor 1004 is responsible for general processing, including execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor 1004, causes the cellular baseband processor 1004 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the cellular baseband processor 1004 when executing the software. The cellular baseband processor 1004 further includes a receiving component 1030, a communication manager 1032, and a transmitting component 1034. The communication manager 1032 includes the one or more illustrated components. The components within the communication manager 1032 can be stored in the computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1004. The cellular baseband processor 1004 can be a component of UE 350 and can include a memory 360 and / or at least one of the following: TX processor 368, RX processor 356, and controller / processor 359. In one configuration, device 1002 can be a modem chip and include only the baseband processor 1004, and in another configuration, device 1002 can be the entire UE (e.g., see Figure 3 UE 350) and include the foregoing additional modules of device 1002.

[0139] The communication manager 1032 includes a PUE communication component 1046 configured to receive information associated with P2V communication from a first UE 104 on a first set of resources dedicated to P2V communication, e.g., as described in 802 in connection with Figure 8 .

[0140] The communication manager 1032 may further include an indication component 1040 configured to transmit a paging indicator on a second set of resources, the paging indicator indicating that a paging message is scheduled on a third set of resources allocated for V2P communication that is contiguous with the second set of resources, e.g., as described in 804 in connection with Figure 8 .

[0141] The communication manager 1032 may further include a messaging component 1042 configured to transmit a paging message on the third set of resources after transmitting the paging indicator, wherein the paging message is associated with V2P communication, e.g., as described in 806 in connection with Figure 8 .

[0142] The device 1002 may include additional components that perform all or some of the blocks, operations, signaling, etc. of the algorithms in the foregoing flowcharts of Figure 8 . As such, Figure 8 all or some of the blocks, operations, signaling, etc. in the foregoing flowcharts of

[0143] may be performed by a component and the device 1002 may include one or more of those components. These components may be one or more hardware components specifically configured to perform the processes / algorithms, implemented by a processor configured to perform the processes / algorithms, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0144] In one configuration, the device 1002, particularly the cellular baseband processor 1004, includes means for transmitting a paging indicator on a first set of resources, the paging indicator indicating that a paging message is scheduled on a second set of resources allocated for V2P communication that is contiguous with the first set of resources, and means for transmitting a paging message on the second set of resources after transmitting the paging indicator, the paging message being associated with V2P communication.

[0144] In one configuration, the first set of resources is included in a third set of resources allocated for P2V communication, and the first set of resources includes the last symbol of the third set of resources.

[0145] In one configuration, the third set of resources includes a gap symbol that is contiguous and before the last symbol.

[0146] In one configuration, the first set of resources is included in a third set of resources allocated for PSFCH.

[0147] In one configuration, a set of time slots is allocated for P2V communication and is separate for a fourth resource set and a third resource set, with the fourth resource set preceding the third resource set.

[0148] In one configuration, the paging indicator includes one of the following: a common sequence or a sequence based on information of a second UE to which a paging message is transmitted.

[0149] In one configuration, device 1002 and in particular cellular baseband processor 1004 may further include means for receiving information associated with P2V communication from a second UE on a third resource set dedicated to P2V communication, and the third resource set does not overlap in time with the second resource set.

[0150] The foregoing means may be one or more of the foregoing components in device 1002 configured to perform the functions recited by the foregoing means. As described above, device 1002 may include TX processor 368, RX processor 356, and controller / processor 359. Thus, in one configuration, the foregoing means may be TX processor 368, RX processor 356, and controller / processor 359 configured to perform the functions recited by the foregoing means.

[0151] It should be understood that the specific order or hierarchy of the various blocks in the disclosed process / flowchart is illustrative of example approaches. It should be understood that based on design preferences, the specific order or hierarchy of the various blocks in these process / flowcharts may be rearranged. Additionally, some blocks may be combined or omitted. The appended method claims present the elements of the various blocks in exemplary order and are not meant to be limited to the specific order or hierarchy presented.

[0152] The foregoing 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 readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but are to be accorded the full scope consistent with the language of the claims, where the singular forms of the elements are not intended to mean "one and only one" unless specifically stated otherwise, but rather "one or more." The phrase "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or superior to other aspects. Unless specifically stated otherwise, the term "some" 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 "any combination of A, B, C, or thereof" include any combination of A, B, and / or C and may include multiple As, multiple Bs, or multiple Cs. 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 "any combination of A, B, C, or thereof" can be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination can include one or more members of A, B, or C. Elements of the various aspects described throughout this disclosure that are presently known or later come to be known to those of ordinary skill in the art as structural and functional equivalents are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended to be dedicated to the public, whether or not such disclosure is expressly recited in the claims. The phrases "module," "mechanism," "element," "device," etc. are not intended to be substitutes for the phrase "means." Thus, no claim element should be construed as means-plus-function unless the element is expressly recited using the phrase "means for...".

Claims

1. A method for wireless communication by a first user equipment UE, comprising: Monitoring a first resource set to detect a paging indicator, the paging indicator indicating that a vehicle-to-pedestrian V2P paging message is carried on a second resource set allocated for V2P communication that is coherent in time with the first resource set, wherein the first resource set is included in a fourth resource set allocated for a physical sidelink feedback channel PSFCH; Decoding information on the second resource set when the paging indicator is detected to detect the V2P paging message from a second UE, the V2P paging message being associated with the V2P communication; And Suppressing decoding of the information on the second resource set when the paging indicator is not detected.

2. The method according to claim 1, wherein a third resource set allocated for pedestrian-to-vehicle P2V communication and preceding the fourth resource set in time is separated from the fourth resource set by a set of time slots not monitored by the first UE.

3. The method according to claim 1, wherein the paging indicator comprises one of a common sequence or a sequence based on information identifying the first UE.

4. The method according to claim 1, further comprising: Transmitting information associated with the P2V communication on a third resource set dedicated to pedestrian-to-vehicle P2V communication, wherein the third resource set does not overlap in time with the second resource set.

5. The method according to claim 4, wherein the information associated with the P2V communication is transmitted on the third resource set based on one of random selection or carrier sensing.

6. The method according to claim 4, wherein the second resource set is not dedicated to the V2P communication so as to allow other types of communication, and wherein the third resource set is dedicated to the P2V communication so as to prohibit other types of communication.

7. The method according to claim 1, wherein information on each symbol on each subchannel of the second resource set allocated for the V2P communication is decoded.

8. The method according to claim 1, wherein Suppressing decoding of the information on the second resource set when the paging indicator is not detected comprises: Switching from a high power state to a low power state, the first UE being in the high power state when monitoring the first resource set.

9. The method according to claim 1, wherein each of the first resource set and the second resource set comprises a time resource set, a frequency resource set, a code resource set, or any combination thereof.

10. A method for wireless communication by a vehicle user equipment VUE, comprising: Transmitting a paging indicator on a first resource set, the paging indicator indicating that a vehicle-to-pedestrian V2P paging message is scheduled on a second resource set allocated for V2P communication that is coherent in time with the first resource set, wherein the first resource set is included in a fourth resource set allocated for a physical sidelink feedback channel PSFCH; And After transmitting the paging indicator, the V2P paging message is transmitted on the second resource set, and the V2P paging message is associated with the V2P communication.

11. The method according to claim 10, wherein a third resource set that is allocated for pedestrian-to-vehicle P2V communication and is before the fourth resource set is separated from the fourth resource set by a set of time slots.

12. The method according to claim 10, wherein the paging indicator includes one of a common sequence or a sequence based on information of a second UE to which the V2P paging message is transmitted.

13. The method according to claim 10, further comprising: Receiving, on a third resource set dedicated to pedestrian-to-vehicle P2V communication, information associated with the P2V communication from a second UE, wherein the third resource set does not overlap in time with the second resource set.

14. An apparatus for wireless communication by a first user equipment UE, comprising: a memory; and at least one processor coupled to the memory and configured to: Monitor a first resource set to detect a paging indicator, the paging indicator indicating that a vehicle-to-pedestrian V2P paging message is carried on a second resource set allocated for V2P communication that is coherent in time with the first resource set, wherein the first resource set is included in a fourth resource set allocated for a physical sidelink feedback channel PSFCH; Decode the information on the second resource set to detect the V2P paging message from a second UE when the paging indicator is detected, the V2P paging message being associated with the V2P communication; and Suppress decoding of the information on the second resource set when the paging indicator is not detected.

15. The apparatus according to claim 14, wherein a third resource set that is allocated for pedestrian-to-vehicle P2V communication and is before the fourth resource set in time is separated from the fourth resource set by a set of time slots not monitored by the first UE.

16. The apparatus according to claim 14, wherein the paging indicator includes one of a common sequence or a sequence based on information identifying the first UE.

17. The apparatus according to claim 14, wherein the at least one processor is further configured to: Transmit information associated with the P2V communication on a third resource set dedicated to pedestrian-to-vehicle P2V communication, wherein the third resource set does not overlap in time with the second resource set.

18. The apparatus according to claim 17, wherein the information associated with the P2V communication is transmitted on the third resource set based on one of random selection or carrier sensing.

19. The apparatus according to claim 17, wherein the second resource set is not dedicated to the V2P communication so as to allow other types of communication, and wherein the third resource set is dedicated to the P2V communication so as to prohibit other types of communication.

20. The apparatus according to claim 14, wherein information on each symbol on each subchannel of the second resource set allocated for the V2P communication is decoded.

21. The apparatus according to claim 14, wherein suppressing decoding of the information on the second resource set when the paging indicator is not detected includes: transitioning from a high power state to a low power state, the first UE being in the high power state when monitoring the first resource set.

22. The apparatus according to claim 14, wherein each of the first resource set and the second resource set includes a time resource set, a frequency resource set, a code resource set, or any combination thereof.

23. An apparatus for wireless communication by a vehicle user equipment (VUE), comprising: a memory; and at least one processor coupled to the memory and configured to: transmit a paging indicator on a first resource set, the paging indicator indicating that a vehicle-to-pedestrian V2P paging message is scheduled on a second resource set allocated for V2P communication that is temporally coherent with the first resource set, wherein the first resource set is included in a fourth resource set allocated for a physical sidelink feedback channel (PSFCH); and after transmitting the paging indicator, transmit the V2P paging message on the second resource set, the V2P paging message being associated with the V2P communication.

24. The apparatus according to claim 23, wherein a third resource set allocated for pedestrian-to-vehicle P2V communication and preceding the fourth resource set is separated from the fourth resource set by a set of time slots.

25. The apparatus according to claim 23, wherein the paging indicator includes one of a common sequence or a sequence based on information of the second UE to which the V2P paging message is transmitted.

26. The apparatus according to claim 23, wherein the at least one processor is further configured to: receive information associated with the P2V communication from a second UE on a third resource set dedicated to pedestrian-to-vehicle P2V communication, wherein the third resource set does not overlap with the second resource set in time.

27. A method for wireless communication by a first user equipment (UE) associated with a pedestrian, comprising: monitoring a first resource set to detect a paging indicator, the paging indicator indicating that a paging message is carried on a second resource set allocated for vehicle-to-pedestrian (V2P) communication that is temporally coherent with the first resource set, the V2P communication being transmitted between the UE and a second UE associated with a vehicle, wherein the first resource set is included in a third resource set allocated for pedestrian-to-vehicle (P2V) communication via a physical sidelink feedback channel (PSFCH), and the first resource set includes the last symbol of the third resource set; Upon detecting the paging indicator, decoding information regarding the second resource set to detect the paging message from the second UE, wherein the paging message associated with the V2P communication is transmitted on the second resource set after transmitting the paging indicator and during a resource period scheduled for the PSFCH; and suppressing decoding of the information on the second resource set when the paging indicator is not detected.

28. The method according to claim 27, wherein the third resource set includes gap symbols coherently before the last symbol.

29. The method according to claim 27, wherein a fourth resource set assigned for P2V communication and temporally before the third resource set is separated from the third resource set by a set of time slots not monitored by the first UE.

30. The method according to claim 27, wherein the paging indicator includes one of a common sequence or a sequence based on information identifying the first UE.

31. The method according to claim 27, further comprising: transmitting information associated with P2V communication on a third resource set dedicated to the P2V communication, wherein the third resource set does not overlap with the second resource set in time.

32. The method according to claim 31, wherein the information associated with the P2V communication is transmitted on the third resource set based on one of random selection or carrier sensing.

33. The method according to claim 27, wherein the second resource set is not dedicated to the V2P communication such that other types of communication are allowed, and wherein the third resource set is dedicated to the P2V communication such that other types of communication are prohibited.

34. The method according to claim 27, wherein information on each symbol on each subchannel of the second resource set assigned for the V2P communication is decoded.

35. The method according to claim 27, wherein suppressing decoding of the information on the second resource set when the paging indicator is not detected includes: transitioning from a high power state to a low power state, the first UE being in the high power state when monitoring the first resource set.

36. The method according to claim 27, wherein the first resource set and the second resource set each include a time resource set, a frequency resource set, a code resource set, or any combination thereof.

37. The method according to claim 27, wherein the paging indicator occupies the last symbol of the third resource set.

38. A method for wireless communication by a vehicle user equipment (VUE), comprising: Transmit a paging indicator on a first resource set, the paging indicator indicating that a paging message is scheduled on a second resource set that is contiguous with the first resource set and is allocated for vehicle-to-pedestrian (V2P) communication, the V2P communication being transmitted between the VUE and a second UE associated with a pedestrian, wherein the first resource set is included in a third resource set allocated for pedestrian-to-vehicle (P2V) communication via a physical sidelink feedback channel (PSFCH), and the first resource set includes the last symbol of the third resource set; and Transmit the paging message on the second resource set during a resource scheduled for the PSFCH after transmitting the paging indicator, the paging message being associated with the V2P communication.

39. The method of claim 38, wherein the third resource set includes a gap symbol that is contiguous before the last symbol.

40. The method of claim 38, wherein a fourth resource set allocated for P2V communication and before the third resource set is separated from the third resource set by a set of time slots.

41. The method of claim 38, wherein the paging indicator includes one of a common sequence or a sequence based on information of the second UE to which the paging message is transmitted.

42. The method of claim 38, further comprising:[[]]END]] Receiving information associated with the P2V communication from a second UE on a third resource set dedicated to the P2V communication, wherein the third resource set does not overlap in time with the second resource set.

43. The method of claim 38, wherein the paging indicator occupies the last symbol of the third resource set.

44. An apparatus for wireless communication by a first user equipment (UE) associated with a pedestrian, comprising: A memory; And One or more processors, individually or in combination, the one or more processors being coupled to the memory and configured to: Monitor a first resource set to detect a paging indicator that indicates that a paging message is carried on a second resource set that is temporally continuous with the first resource set and is allocated for vehicle-to-pedestrian (V2P) communication, the V2P communication being transmitted between the UE and a second UE associated with a vehicle, wherein the first resource set is included in a third resource set allocated for pedestrian-to-vehicle (P2V) communication via a physical sidelink feedback channel (PSFCH), and the first resource set includes the last symbol of the third resource set; When the paging indicator is detected, decode information about the second resource set to detect the paging message from the second UE, wherein the paging message is transmitted on the second resource set after transmitting the paging indicator and during a resource scheduled for the PSFCH, the paging message being associated with the V2P communication; And Suppress decoding of information on the second resource set when the paging indicator is not detected.

45. The apparatus according to claim 44, wherein the third resource set includes a gap symbol coherently before the last symbol.

46. The apparatus according to claim 44, wherein a fourth resource set allocated for P2V communication and temporally before the third resource set is separated from the third resource set by a set of time slots not monitored by the first UE.

47. The apparatus according to claim 44, wherein the paging indicator includes one of a common sequence or a sequence based on information identifying the first UE.

48. The apparatus according to claim 44, wherein the paging indicator occupies the last symbol of the third resource set.

49. An apparatus for wireless communication by a vehicle user equipment (VUE), comprising: a memory; and one or more processors, individual or in combination, coupled to the memory and configured to: transmit a paging indicator on a first resource set, the paging indicator indicating that a paging message is scheduled on a second resource set allocated for vehicle-to-pedestrian (V2P) communication coherent with the first resource set, the V2P communication being transmitted between the VUE and a second UE associated with a pedestrian, wherein the first resource set is included in a third resource set allocated for pedestrian-to-vehicle (P2V) communication via a physical side link feedback channel (PSFCH), and the first resource set includes the last symbol of the third resource set; and transmit the paging message on the second resource set during resources allocated for the PSFCH after transmitting the paging indicator, the paging message being associated with the V2P communication.

50. The apparatus according to claim 49, wherein the third resource set includes a gap symbol coherently before the last symbol.

51. The apparatus according to claim 49, wherein a fourth resource set allocated for P2V communication and before the third resource set is separated from the third resource set by a set of time slots.

52. The apparatus according to claim 49, wherein the paging indicator occupies the last symbol of the third resource set.

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