Power enhancement technology for vehicle-to-pedestrian wireless communication systems

Abstract

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify a wake-up time period corresponding to a wake-up cycle, send a message including an identifier of the UE in a first resource pool during a first portion of the wake-up time period based on the wake-up cycle, and monitor a paging signal from a vehicle UE during a paging occasion of the wake-up time period based on sending the message. The vehicle UE may identify a wake-up configuration for the wake-up time period, and receive a message including an identifier of the UE in a resource pool during the first portion of the wake-up time period. The vehicle UE may send a paging signal during a paging occasion of the wake-up time period.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 865,862, filed on June 24, 2019 by BALASUBRAMANIAN et al., entitled “POWERENHANCEMENT TECHNIQUES FOR VEHICLE-TO-PEDESTRIAN WIRELESS COMMUNICATION SYSTEMS,” and U.S. Patent Application No. 16 / 901,257, filed on June 15, 2020 by BALASUBRAMANIAN et al., entitled “POWER ENHANCEMENT TECHNIQUES FOR VEHICLE-TO-PEDESTRIAN WIRELESS COMMUNICATION SYSTEMS,” each of which is assigned to the present assignee. Technical Field

[0003] The following relates generally to wireless communications, and more particularly to power enhancement techniques for vehicle-to-pedestrian (V2P) wireless communication systems. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems, such as long term evolution (LTE) systems, LTE advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM).

[0005] A wireless multiple access communication system may include multiple base stations or network access nodes, each base station or network access node supporting communication of multiple communication devices simultaneously. Some wireless communication systems may support direct communication between multiple communication devices. Examples of direct communication may include, but are not limited to, device-to-device (D2D) communication, vehicle-based communication, also referred to as V2P network, vehicle-to-everything (V2X) network, vehicle-to-vehicle (V2V) network, cellular V2X (C-V2X) network, etc. As the demand for communication efficiency increases, some wireless communication systems may not be able to provide satisfactory power management, and thus improved techniques are needed. Summary of the invention

[0006] The described techniques relate to improved methods, systems, devices, and apparatuses that support power enhancement techniques for vehicle-to-pedestrian (V2P) wireless communication systems. In general, the described techniques provide for improving pedestrian safety in a V2P wireless communication system, and improving direct communication between user equipment (UE) in a V2P wireless communication system via a sidelink connection (e.g., via a PC5 interface). For example, the described techniques may enable a UE (e.g., a pedestrian UE (P-UE)) to experience power savings by reducing power consumption associated with PC5 interface operations. The techniques may achieve the benefits described herein by configuring a common PC5 wake-up period for all P-UEs or configuring a P-UE-specific wake-up period in a V2P wireless communication system.

[0007] The P-UE may identify an awake time period corresponding to an awake cycle and send a message (e.g., a pedestrian to vehicle (P2V) message) including an identifier of the P-UE within a resource pool during a portion of the awake time period and monitor for paging messages from a vehicle UE (V-UE) during a paging occasion of the awake time period. In some cases, the P-UE may identify a paging occasion of a radio access technology (RAT) that may be different from a paging occasion of a sidelink RAT and send a message including an identifier of the P-UE via the sidelink RAT during a portion of the awake time period positioned relative to the paging occasion of the RAT. Thus, the P-UE may monitor for collision warning messages from the V-UE during different portions of the awake time period. Thus, the described techniques may include features for reducing power consumption, improving reliability of D2D communications (e.g., V2P communications), and may facilitate low latency for D2D communications, among other benefits.

[0008] A method of wireless communication by a UE is described. The method may include identifying an awake time period corresponding to an awake cycle, sending a message including an identifier of the UE within a first resource pool during a first portion of the awake time period based on the awake cycle, and monitoring a paging signal from a vehicle UE during a paging occasion of the awake time period based on sending the message.

[0009] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to identify a wake-up time period corresponding to a wake-up cycle, send a message including an identifier of the apparatus within a first resource pool during a first portion of the wake-up time period based on the wake-up cycle, and monitor a paging signal from a vehicle UE during a paging occasion of the wake-up time period based on sending the message.

[0010] Another apparatus for wireless communication is described. The apparatus may include means for identifying an awake time period corresponding to an awake cycle, sending a message including an identifier of the apparatus within a first resource pool during a first portion of the awake time period based on the awake cycle, and monitoring a paging signal from a vehicle UE during a paging occasion of the awake time period based on sending the message.

[0011] A non-transitory computer-readable medium storing code for wireless communication by a UE is described. The code may include instructions executable by a processor to identify a wake-up time period corresponding to a wake-up cycle, send a message including an identifier of the UE within a first resource pool during a first portion of the wake-up time period based on the wake-up cycle, and monitor a paging signal from a vehicle UE during a paging occasion of the wake-up time period based on sending the message.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a paging signal during a paging occasion and monitoring a second resource pool within the wake-up time period for collision warning messages from the vehicle UE during a second portion of the wake-up time period occurring relative to the first portion based on receiving the paging signal.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, monitoring the second resource pool may include operations, features, components, or instructions for receiving a collision warning message including an identifier of the UE, and presenting an alert based on receiving the collision warning message.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a collision warning message including an identifier of a second UE that may be different from the UE and discarding the collision warning message.

[0015] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for initiating entry into a low power state after an end of a wake-up period that extends until a subsequent wake-up period.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for entering a low power state beginning in a second portion of the wake-up time period extending until a subsequent wake-up time period based on determining that a paging signal was not received during a paging occasion within the wake-up time period.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a message may include operations, features, components, or instructions for performing a clear channel assessment process to determine a resource block for transmission within a first resource pool, and sending a message within the resource block based on a result of the clear channel assessment process.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a message may include operations, features, components, or instructions for sending a message including an identifier that may be a pseudo identifier of the UE.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a message may include operations, features, components, or instructions for sending a message including location data of the UE, sensor data of the UE, trajectory data of the UE, or any combination thereof.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a message may include operations, features, components, or instructions for sending a message via a sidelink channel using a sidelink interface of a UE.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, identifying a wake-up time period may include operations, features, components, or instructions for receiving a wake-up configuration indicating a wake-up time period and a wake-up cycle.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first portion of the wake-up time period occurs before or after the second portion of the wake-up time period.

[0023] A method for wireless communication by a vehicle UE is described. The method may include identifying a wake-up configuration for a wake-up time period, receiving a message in a first resource pool during a first portion of the wake-up time period, the message including an identifier of a first UE and at least one of position data of the first UE based on the wake-up configuration, sensor data of the first UE, or trajectory data of the first UE, and sending a paging signal during a paging occasion of the wake-up time period based on at least one of the position data, sensor data, or trajectory data.

[0024] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to identify a wake-up configuration for a wake-up time period, receive a message in a first resource pool within a first portion of the wake-up time period, the message including an identifier of a first UE and at least one of location data of the first UE, sensor data of the first UE, or trajectory data of the first UE based on the wake-up configuration, and send a paging signal within a paging occasion of the wake-up time period based on at least one of the location data, sensor data, or trajectory data.

[0025] Another apparatus for wireless communication is described. The apparatus may include components for identifying a wake-up configuration for a wake-up period, receiving a message in a first resource pool during a first portion of the wake-up period, the message including an identifier of a first UE and at least one of location data of the first UE, sensor data of the first UE, or trajectory data of the first UE based on the wake-up configuration, and sending a paging signal during a paging occasion of the wake-up period based on at least one of the location data, sensor data, or trajectory data.

[0026] A non-transitory computer-readable medium storing code for wireless communication by a vehicle UE is described. The code may include instructions executable by a processor to identify a wake-up configuration for a wake-up time period, receive a message in a first resource pool within a first portion of the wake-up time period, the message including an identifier of a first UE and at least one of location data of the first UE, sensor data of the first UE, or trajectory data of the first UE based on the wake-up configuration, and send a paging signal within a paging occasion of the wake-up time period based on at least one of the location data, sensor data, or trajectory data.

[0027] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending or receiving a wake-up configuration indicating a timing reference for a wake-up period, a periodicity of the wake-up period, or both.

[0028] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for generating a prediction based on the message that the vehicle UE may be on a collision course with the first UE, wherein a paging signal may be sent within a paging occasion in a wake-up time period based on the prediction.

[0029] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a collision warning message including an identifier of the first UE within a second resource pool based on predicting that the collision warning message occurs during a second portion of the wake-up time period relative to the paging occasion.

[0030] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for changing a vehicle speed, a vehicle trajectory, or both, including a vehicle UE, based on a prediction.

[0031] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for generating an alert based on a prediction.

[0032] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a second message within a first resource pool within a first portion of a second wake-up time period, the second message including an identifier of a second UE and location data of the second UE, generating a prediction based on the second message that the vehicle UE may not be on a collision path with the second UE, and determining not to send the paging signal within a second paging opportunity within the second wake-up time period based on the prediction.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a message set including a set of identifiers of a set of UEs, and generating a prediction based on the message set that a vehicle UE may be on a collision course with at least one UE in the set of UEs, wherein a paging signal may be sent within a paging occasion in a wake-up time period based on the prediction.

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a collision warning message including an identifier of at least one UE during a second portion of the wake-up time period occurring relative to a paging occasion based on a prediction.

[0035] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a message set including a set of identifiers of a set of UEs within a first portion of a second wake-up time period, generating a prediction based on the message set that the vehicle UE may not be on a collision path with any one of the set of UEs, and determining not to send a paging signal within a second paging occasion of the second wake-up time period based on the prediction.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message may include operations, features, components, or instructions for receiving a message including an identifier that may be a pseudo-identifier of the first UE.

[0037] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message may include operations, features, components, or instructions for receiving a message via a sidelink channel using a sidelink interface of a UE.

[0038] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first portion of the wake-up time period occurs before or after the second portion of the wake-up time period.

[0039] A method of wireless communication by a UE is described. The method may include identifying a paging occasion of a first RAT that is different from a paging occasion of a sidelink RAT, sending a message including an identifier of the UE via the sidelink RAT during a first portion of a wake-up time period located relative to the paging occasion of the first RAT, and monitoring a collision warning message including the identifier of the UE from a vehicle UE during a second portion of the wake-up time period occurring relative to the first portion.

[0040] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to identify a paging occasion of a first RAT that is different from a paging occasion of a sidelink RAT, send a message including an identifier of the apparatus via the sidelink RAT during a first portion of a wake-up time period located relative to the paging occasion of the first RAT, and monitor for a collision warning message including the identifier of the apparatus from a vehicle UE during a second portion of the wake-up time period occurring relative to the first portion.

[0041] Another apparatus for wireless communication is described. The apparatus may include means for identifying a paging occasion of a first RAT that is different from a paging occasion of a sidelink RAT, transmitting a message including an identifier of the apparatus via the sidelink RAT during a first portion of a wake-up period located relative to the paging occasion of the first RAT, and monitoring for a collision warning message including the identifier of the apparatus from a vehicle UE during a second portion of the wake-up period occurring relative to the first portion.

[0042] A non-transitory computer-readable medium storing code for wireless communication by a UE is described. The code may include instructions executable by a processor to identify a paging occasion of a first RAT that is different from a paging occasion of a sidelink RAT, send a message including an identifier of the UE via the sidelink RAT during a first portion of a wake-up time period located relative to the paging occasion of the first RAT, and monitor for a collision warning message including the identifier of the UE from a vehicle UE during a second portion of the wake-up time period occurring relative to the first portion.

[0043] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting paging cycle information indicating a paging cycle of a wake-up time period.

[0044] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a message may include operations, features, components, or instructions for sending a message including location data of the UE, trajectory data of the UE, sensor data of the UE, or any combination thereof.

[0045] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a collision warning message including an identifier of the UE and presenting an alert based on the collision warning message.

[0046] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a collision warning message including an identifier of a second UE that may be different from the UE and discarding the collision warning message.

[0047] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for initiating entry into a low power state after an end of a wake-up period that extends until a subsequent wake-up period.

[0048] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying a configured delay between an end of a paging occasion of the first RAT and a start of a wake-up period of the sidelink RAT.

[0049] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first RAT may be a Long Term Evolution RAT or a New Radio (NR) RAT.

[0050] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a message may include operations, features, components, or instructions for sending a message via a sidelink channel using a sidelink RAT of the UE.

[0051] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a message may include operations, features, components, or instructions for sending a message including an identifier that may be a pseudo identifier of the UE.

[0052] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first portion of the wake-up period may be aligned with, partially aligned with, occur before, or after a paging occasion of the first RAT.

[0053] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first portion of the wake-up time period occurs before or after the second portion of the wake-up time period.

[0054] A method for wireless communication by a vehicular UE is described. The method may include receiving paging cycle information from a first UE, the paging cycle information indicating a paging cycle of a wake-up period of a sidelink RAT relative to a paging occasion configured by a first RAT for the first UE, receiving a message including an identifier of the first UE during a first portion of the wake-up period occurring relative to the paging occasion of the first RAT, and sending a collision warning message during a second portion of the wake-up period occurring relative to the first portion based on the message.

[0055] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to receive paging cycle information from a first UE, the paging cycle information indicating a paging cycle of a wake-up time period of a sidelink RAT relative to a paging occasion configured by a first RAT for the first UE, receive a message including an identifier of the first UE during a first portion of the wake-up time period occurring relative to the paging occasion of the first RAT, and send a collision warning message during a second portion of the wake-up time period occurring relative to the first portion based on the message.

[0056] Another apparatus for wireless communication is described. The apparatus may include means for receiving paging cycle information from a first UE, the paging cycle information indicating a paging cycle of a wake-up period of a sidelink RAT relative to a paging occasion configured by a first RAT for the first UE, receiving a message including an identifier of the first UE during a first portion of the wake-up period occurring relative to the paging occasion of the first RAT, and sending a collision warning message during a second portion of the wake-up period occurring relative to the first portion based on the message.

[0057] A non-transitory computer-readable medium storing code for wireless communication by a vehicle UE is described. The code may include instructions executable by a processor to receive paging cycle information from a first UE, the paging cycle information indicating a paging cycle of a wake-up period of a sidelink RAT relative to a paging occasion configured by a first RAT for the first UE, receive a message including an identifier of the first UE during a first portion of the wake-up period occurring relative to the paging occasion of the first RAT, and send a collision warning message based on the message during a second portion of the wake-up period occurring relative to the first portion.

[0058] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message may include operations, features, components, or instructions for receiving a message including location data of the first UE, trajectory data of the first UE, sensor data of the first UE, or any combination.

[0059] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for generating a prediction based on a message that a vehicle UE may be on a collision course with a first UE, wherein the collision warning message includes an identifier of the first UE and may be sent based on the prediction.

[0060] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for changing a vehicle speed, a vehicle trajectory, or both, including a vehicle UE, based on a prediction.

[0061] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying a configured delay between an end of a paging occasion of the first RAT and a start of a wake-up period of the sidelink RAT.

[0062] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving second paging cycle information of a second paging cycle indicating a second paging cycle of a second wake-up time period relative to a second paging occasion of a first RAT configured for a second UE, the second wake-up time period being offset in time relative to the wake-up time period, receiving a second message including an identifier of the second UE during a first portion of the second wake-up time period occurring relative to the second paging occasion of the first RAT, and sending a second collision warning message during a second portion of the second wake-up time period occurring relative to the first portion based on the second message.

[0063] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first RAT may be a Long Term Evolution RAT or a NR RAT.

[0064] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message may include operations, features, components, or instructions for receiving a message via a sidelink channel using a sidelink RAT.

[0065] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message may include operations, features, components, or instructions for receiving a message including an identifier that may be a pseudo-identifier of the first UE.

[0066] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first portion of the wake-up period may be aligned with, partially aligned with, occur before, or after a paging occasion of the first RAT.

[0067] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first portion of the wake-up time period occurs before or after the second portion of the wake-up time period. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 and Figure 2 An example of a wireless communication system according to aspects of the present disclosure is shown.

[0069] Figure 3 An example of a pedestrian user equipment (P-UE) common wake-up cycle according to aspects of the present disclosure is shown.

[0070] Figures 4A to 4D An example of a P-UE specific wake-up cycle according to aspects of the present disclosure is shown.

[0071] Figure 5 and Figure 6 An example of a process flow according to aspects of the present disclosure is shown.

[0072] Figure 7 and Figure 8 A block diagram of a device according to aspects of the present disclosure is shown.

[0073] Fig. 9 A block diagram of a communications manager according to aspects of the present disclosure is shown.

[0074] Fig.10 A schematic diagram of a system according to aspects of the present disclosure is shown.

[0075] Figures 11 to 14 A flow chart illustrating a method according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0076] Some wireless communication systems may support direct communication between multiple communication devices, which in some examples may include user equipment (UE). Examples of direct communication may include device-to-device (D2D) communication, which may include vehicle-based communication, such as, for example, in a vehicle-to-pedestrian (V2P) wireless communication system, etc. In a V2P wireless communication system, D2D communication may occur between a vehicle (also referred to as a "V-UE") and a UE carried by a pedestrian (also referred to as a "P-UE"). Direct communication between the V-UE and the P-UE may occur over a direct connection, which may be a side link connection, such as via a PC5 interface. Thus, the V-UE and the P-UE may exchange information via V2P messages and pedestrian-to-vehicle (P2V) messages using the PC5 interface.

[0077] Some vehicle-based wireless communication systems may have deficiencies in addressing road safety, and more specifically, may have deficiencies in improving pedestrian safety via direct communication. In some examples, to address pedestrian safety issues, the P-UE may continuously monitor a side link (e.g., a PC5 interface) for messages (e.g., warning messages) from a V-UE. However, the continuous monitoring of the side link by the P-UE may result in increased power consumption of the P-UE (e.g., due to the uninterrupted operation of the PC5 interface receiving circuit). Due to the limited resources of the P-UE (e.g., battery life), improving pedestrian safety in a V2P wireless communication system may be challenging. Therefore, as the demand for communication efficiency and pedestrian safety improvements in V2P wireless communication systems increases, improvements to the power management of the P-UE may be required.

[0078] The P-UE may identify an awake time period corresponding to an awake cycle, and transmit a message (e.g., a pedestrian-to-vehicle (P2V) message) including an identifier of the P-UE within a resource pool during a portion of the awake time period, and monitor for paging messages from a vehicle UE (V-UE) during a paging occasion of the awake time period. In some cases, the P-UE may identify a paging occasion of a radio access technology (RAT) that may be different from a paging occasion of a sidelink RAT, and transmit a message including an identifier of the P-UE via the sidelink RAT during a portion of the awake time period positioned relative to the paging occasion of the RAT.

[0079] Aspects of the subject matter described herein may be implemented to achieve one or more advantages. The described techniques may support improvements in energy conservation, among other advantages. Thus, the supported techniques may include improved UE operation and may improve UE efficiency, among other benefits in a V2P wireless communication system. Aspects of the present disclosure are initially described in the context of a wireless communication system. Then, aspects of the present disclosure are illustrated and described by reference to a V2P wireless communication system, a P-UE common wake-up cycle, one or more P-UE specific wake-up cycles, and a process flow associated with power enhancement techniques in a V2P wireless communication system. Aspects of the present disclosure are further illustrated and described by reference to device diagrams, system diagrams, and flow charts associated with power enhancement (e.g., power optimization) techniques in a V2P wireless communication system.

[0080] Figure 1An example of a wireless communication system according to aspects of the present disclosure is shown. The wireless communication system 100 may include a base station 105, a UE 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an LTE advanced (LTE-A) network, an LTE-A Pro network, or a new radio (NR) network. In some cases, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0081] The base stations 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may be devices of different forms or capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish communication links 125. The coverage area 110 may be an example of a geographic area in which the base stations 105 and the UEs 115 support communication of signals according to one or more radio access technologies.

[0082] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or both, at different times. The UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some example UEs 115 are shown in FIG. Figure 1 As shown, the UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, or base stations 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), or any combination thereof.

[0083] The base stations 105 may communicate with the core network 130 or with each other, or both. For example, the base stations 105 may interface with the core network 130 via a backhaul link 120 (e.g., via S1, N2, N3, or other interface). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both, via the backhaul link 120 (e.g., via X2, Xn, or other interface). In some examples, the backhaul link 120 may be or include one or more wireless links.

[0084] The one or more base stations 105 described herein may include or may be referred to by a person of ordinary skill in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or a giga-NodeB (any of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or other suitable terminology.

[0085] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where in other examples, a "device" may also be referred to as a unit, a station, a terminal, or a client. UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, a machine type communication (MTC) device, etc., which may be implemented in various objects such as home appliances, vehicles, meters, etc.

[0086] like Figure 1 As shown, the UE 115 described herein can communicate with various types of devices, such as other UEs 115 that can sometimes act as relays, as well as base stations 105 and network devices including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc.

[0087] The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 through one or more carriers. The term "carrier" may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of a radio frequency band (e.g., a bandwidth portion (BWP)) that operates according to a physical layer channel for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to the carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0088] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located based on a channel raster for discovery by UE 115. A carrier may operate in a standalone mode, where initial acquisition and connection may be performed by UE 115 via the carrier, or a carrier may operate in a non-standalone mode, where the connection is anchored using a different carrier (e.g., of the same or different radio access technology).

[0089] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode), or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0090] A carrier may be associated with a particular bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of several predetermined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) of a carrier for a particular radio access technology. Devices (e.g., base stations 105, UEs 115, or both) of the wireless communication system 100 may have a hardware configuration that supports communication on a particular carrier bandwidth or may be configured to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 or both that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each service UE 115 may be configured to operate on a portion (e.g., a sub-band, BWP) or all of the carrier bandwidth.

[0091] The signal waveform transmitted via the carrier wave may be composed of multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the codec rate of the modulation scheme, or both). Therefore, the more resource elements received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate may be for the UE 115. Wireless communication resources may refer to a combination of radio spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity used for communicating with the UE 115.

[0092] One or more numbers for a carrier may be supported, where the number may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into BWPs having the same or different numbers. In some examples, a UE 115 may be configured with multiple BWPs. In some cases, a single BWP for a carrier is active at a given time, and communications for a UE 115 may be limited to the active BWP.

[0093] The time interval of the base station 105 or the UE 115 can be expressed as a multiple of a basic time unit. For example, the basic time unit can refer to T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0094] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some cases, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., depending on the length of the cyclic prefix preceding each symbol period). In some wireless communication systems 100, a time slot may be further divided into multiple mini-slots containing one or more symbols. In addition to the cyclic prefix, each symbol period may contain one or more (e.g., N ) symbol periods. f ) sampling period. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.

[0095] A subframe, a time slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some cases, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0096] Physical channels can be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels can be multiplexed on a downlink carrier, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. The control region (e.g., control resource set (core set)) of a physical control channel can be defined by multiple symbol periods and can extend across the system bandwidth of a carrier or a subset of the system bandwidth. One or more control regions (e.g., core sets) can be configured for a set of UEs 115. For example, a UE 115 can monitor or search a control region for control information according to one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may refer to multiple control channel resources (e.g., control channel elements (CCEs)) associated with coded information in a control information format having a given payload size. The search space set may include a common search space set configured for sending control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0097] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or various combinations thereof). The term "cell" may refer to a logical communication entity used to communicate with the base station 105 (e.g., via a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other) used to distinguish adjacent cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which the logical communication entity operates. Depending on various factors such as the capabilities of the base station 105, these cells may range from smaller areas (e.g., structures, subsets of structures) to larger areas. For example, a cell may be or include a building, a subset of a building, an external space between geographic coverage areas 110, or an external space overlapping geographic coverage areas 110, etc.

[0098] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 115 through a service subscription with a network provider that supports the macro cell. A small cell may be associated with a base station with lower power than a macro cell, and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to a UE 115 through a service subscription with a network provider, or may provide restricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed subscriber group (CSG) , a UE 115 associated with a user in a home or office, etc.). A base station 105 may support one or more cells, and may also support communication on one or more cells using one or more component carriers.

[0099] In some examples, base stations 105 may be mobile, and thus provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0100] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and in some examples, transmissions from different base stations 105 may not be aligned in time. The techniques described herein may be used for synchronous or asynchronous operation.

[0101] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that utilizes the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.

[0102] Some UEs 115 may be configured to employ a reduced power consumption operating mode, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception, but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other energy-saving techniques for UE 115 include entering a power-saving deep sleep mode when not participating in active communications, operating on a limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a predefined portion or range (e.g., a subcarrier or resource block (RB) set) within a carrier, within a guard band of a carrier, or outside a carrier.

[0103] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE115 may be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private communication or group communication, and may be supported by one or more mission-critical services such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions may include service prioritization, and mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency may be used interchangeably herein.

[0104] In some cases, UE 115 may also communicate directly with other UE 115 via a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within a geographic coverage area 110 of a base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105, or otherwise unable to receive transmissions from the base station 105. In some cases, groups of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of the base station 105.

[0105] In some systems, the D2D communication link 135 can be an example of a communication channel between vehicles (e.g., UE 115), such as a sidelink communication channel. In some examples, vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some cases, vehicles in a V2X system can communicate with roadside infrastructure (such as roadside units) via one or more network nodes (e.g., base station 105) using vehicle-to-network (V2N) communication, or with the network, or with both. In some examples, UE 115 can be a P-UE 115 or a V-UE 115, or a combination thereof.

[0106] The P-UE 115 may identify an awake time period corresponding to the awake cycle, and transmit a message (e.g., a P2V message) including an identifier of the P-UE 115 within the resource pool during a portion of the awake time period, and monitor during a paging occasion of the awake time period for a paging message from the V-UE 115. In some cases, the P-UE 115 may identify a paging occasion of a RAT that may be different from a paging occasion of the sidelink RAT, and transmit a message including an identifier of the P-UE 115 via the sidelink RAT during a portion of the awake time period positioned relative to the paging occasion of the RAT.

[0107] The core network 130 may provide user authentication, access permission, tracking, Internet Protocol (IP) connection, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), a user plane function (UPF)) for routing packets or interconnections to an external network. The control plane entity may manage non-access stratum (NAS) functions of UE 115 served by a base station 105 associated with the core network 130, such as mobility, authentication, and bearer management. User IP packets may be delivered through user plane entities, which may provide IP address allocation and other functions. The user plane entity may be connected to a network operator IP service 150. The operator IP service 150 may include access to the Internet, (one or more) intranets, an IP multimedia subsystem (IMS), or a packet-switched streaming media service.

[0108] Some network devices, such as base stations 105, may include subcomponents, such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with UE 115 through multiple other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or merged into a single network device (e.g., base station 105).

[0109] The wireless communication system 100 may operate using one or more frequency bands typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region of 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength range is approximately 1 decimeter to 1 meter long. UHF waves may be blocked or redirected by buildings and environmental features, but these waves may penetrate structures sufficiently so that macro cells provide services to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission of smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum with frequencies less than 300 MHz.

[0110] The wireless communication system 100 may also operate in the super high frequency (SHF) region (also known as the centimeter band) using a frequency band from 3 GHz to 30 GHz or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz, also known as the millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of each device may be smaller and more closely spaced than the UHF antennas. In some cases, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be subject to greater atmospheric attenuation and a shorter range than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may vary by country or regulatory agency.

[0111] The wireless communication system 100 can utilize licensed radio bands and unlicensed radio bands. For example, the wireless communication system 100 can adopt license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in an unlicensed radio spectrum band, devices such as base stations 105 and UEs 115 can use carrier sensing for collision detection and avoidance. In some cases, operations in unlicensed bands can be based on carrier aggregation configuration and a combination of component carriers operating in licensed bands (e.g., LAA). Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, D2D transmissions, etc.

[0112] The base station 105 or UE 115 may be equipped with multiple antennas, which can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels, which may support MIMO operations, or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located on an antenna assembly (e.g., an antenna tower). In some cases, the antennas or antenna arrays associated with the base station 105 may be located in different geographical locations. The base station 105 may have an antenna array with several rows and columns of antenna ports, which the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays, which may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0113] The base station 105 or UE 115 can use MIMO communication to exploit multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. This technology may be referred to as spatial multiplexing. For example, multiple signals may be sent by a transmitting device via different antennas or different combinations of antennas. Similarly, multiple signals may be received by a receiving device via different antennas or different antenna combinations. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) (where multiple spatial layers are sent to the same receiving device), and multi-user MIMO (MU-MIMO) (where multiple spatial layers are sent to multiple devices).

[0114] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105 or a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating in a particular direction relative to the antenna array experience constructive interference and other signals experience destructive interference. Adjustments to signals transmitted via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each antenna element may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other direction).

[0115] The base station 105 or the UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communications with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the base station 105 in different directions. For example, the base station 105 may send signals according to different sets of beamforming weights associated with different transmission directions. The transmission of different beam directions may be used to identify (e.g., by a transmitting device, such as the base station 105, or a receiving device, such as the UE 115) a beam direction for subsequent transmission or reception, or both, by the base station 105.

[0116] Some signals, such as data signals associated with a particular receiving device, may be transmitted by base station 105 in a single beam direction (e.g., a direction associated with a receiving device such as UE 115). In some examples, a beam direction associated with transmission along a single beam direction may be determined based on signals transmitted in different beam directions. For example, UE 115 may receive one or more of the signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0117] In some cases, transmissions by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from a base station 105 to a UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to the number of configured beams across the system bandwidth or one or more subbands. The base station 105 may send reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may be predecoded or not predecoded. The UE 115 may provide feedback for beam selection, which may be a predecoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques for sending signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by UE 115) or for sending signals in a single direction (e.g., for sending data to a receiving device).

[0118] A receiving device (e.g., UE 115) may try multiple reception configurations (e.g., directional listening) when receiving various signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) from a base station 105. For example, a receiving device may try multiple reception directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different reception beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different reception beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different reception configurations or reception directions. In some examples, a receiving device may receive along a single beam direction using a single reception configuration (e.g., when receiving a data signal). A single reception configuration may be aligned in a beam direction determined based on listening according to different reception configuration directions (e.g., a beam direction with the highest signal strength, the highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality determined based on listening according to multiple beam directions).

[0119] The wireless communication system 100 may be a packet-based network operating according to a layered protocol stack. In the user plane, the communication at the bearer or packet data aggregation protocol (PDCP) layer may be IP-based. The radio link control (RLC) layer may perform packet segmentation and reassembly to communicate on a logical channel. The medium access control (MAC) layer may perform priority processing and multiplex logical channels into transport channels. The MAC layer may also use error detection techniques, error correction techniques, or both to support retransmission of the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer may provide the establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 supporting a radio bearer for user plane data. At the physical layer, a transport channel may be mapped to a physical channel.

[0120] UE 115 and base station 105 can support retransmission of data to increase the possibility of successfully receiving data. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the possibility of correctly receiving data through communication link 125. HARQ can include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput of the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some cases, the device can support same-slot HARQ feedback, where the device can provide HARQ feedback in a specific time slot for data received in a previous symbol in the time slot. In other cases, the device can provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0121] Figure 2 An example of a V2P wireless communication system 200 according to aspects of the present disclosure is shown. The V2P wireless communication system 200 may include a plurality of UEs 115, which may be reference Figure 1 Examples of corresponding devices described.

[0122] In the example shown, base station 105-a may wirelessly communicate with one or more vehicles (e.g., UE 115-a) or one or more pedestrians (e.g., UE 115-b, etc.) or any combination of vehicles and pedestrians via one or more communication links 220.

[0123] In some examples, UE 115-a may be a V-UE, and UE 115-b, UE 115-c, and UE 115-d may be P-UEs (e.g., UEs carried by pedestrians). In some examples, V2P wireless communication system 200 may implement aspects of wireless communication system 100. For example, UE 115 in V2P wireless communication system 200 may address road safety issues, and more specifically, improve pedestrian safety by exchanging information via direct communication between UE 115 in V2P wireless communication system 200. For example, V2P messages 205 and P2V messages 210 via PC5 interface 215.

[0124] In some examples, in order to experience these benefits (e.g., road safety, pedestrian safety), the UE 115 in the V2P wireless communication system 200 may support improvements to UE 115 power usage (e.g., minimizing or optimizing power consumption), as well as other advantages. In order for the UE 115 to experience advantages such as power improvements, in some examples, the UE 115 may configure one or more operational modifications to provide the UE 115 with improved PC5 power operations. The one or more operational modifications may include operating according to a UE common wake-up cycle (also referred to as a "common PC5 wake-up cycle") or a UE specific wake-up cycle (also referred to as a "specific PC5 wake-up cycle"). In some examples, the UE 115 may receive a wake-up configuration for wake-up times and wake-up cycles from the base station 105-a. References herein Figure 3 Exemplary wake-up cycles are further described in greater detail.

[0125] Figure 3 An example of a P-UE common wake-up cycle 300 according to aspects of the present disclosure is shown. The P-UE common wake-up cycle 300 may be implemented as shown in FIG. Figure 1 and 2 Aspects of the wireless communication system 100 and the V2P wireless communication system 200. For example, the P-UE common wake-up cycle 300 can be based on the configuration of the base station 105 and implemented by the UE 115 to activate and deactivate the PC5 interface to support robustness of the PC5 interface operation and improvement of power management related to the PC5 interface operation, as well as other advantages.

[0126] The P-UE common wake-up cycle 300 may include, for example, an on-duration 305 (also referred to as T PC5ON), which may be configured according to a common time reference (e.g., frame, subframe, time slot) in which UE 115 (e.g., P-UE 115, V-UE 115) turns on its corresponding PC5 interface (e.g., side link connection) for the on duration 305. In some examples, UE 115 may turn on its corresponding PC5 interface synchronously. In addition, the common wake-up period 300 may include an off duration 310 (also referred to as “T PC5OFF Duration 310”), which can be configured according to a common time reference in which UE 115 (e.g., P-UE 115, V-UE 115) disconnects its corresponding PC5 interface for the disconnect duration 310. Similarly, UE 115 can disconnect its corresponding PC5 interface synchronously. For example, UE 115 can disconnect its corresponding PC5 interface at the same time. UE 115 can cycle between being in an active mode during the on duration 305 and being in a low power state during the off duration 310 according to the common wake-up cycle 300.

[0127] The P-UE common wake-up period 300 may include time and frequency resources associated with direct communications such as V2P and P2V communications. For example, the on-duration 305 may correspond to time and frequency resources used for direct communications, which may include resource elements (REs), physical resource blocks (PRBs), etc. In some examples, the time and frequency resources may be associated with multiple resource pools for UE 115. In some examples, different resource pools may be configured for different UE types. For example, there may be separate resource pools for pedestrian (e.g., P-UE 115) to vehicle (e.g., V-UE 115) communications and vehicle (e.g., V-UE 115) to pedestrian (e.g., P-UE 115) communications.

[0128] exist Figure 3 In the example, the resource pool 315 for the P-UE 115 may include time and frequency resources for the P-UE 115 to send information to the V-UE 115. The P-UE 115 may be connected to the V-UE 115 during a portion 330 (also referred to as “T P2V The P-UE 115 may broadcast information to the V-UE 115 using time and frequency resources associated with the resource pool 315 during a duration 330″). For example, the P-UE 115 may broadcast an identifier (ID) (e.g., a pseudo-ID), location information (e.g., geo-positioning information (GPS)), a cause indication (e.g., intent, trajectory data, etc.), etc. on the configured time and frequency resources of the resource pool 315 (e.g., configured PRBs). The pseudo-identifier may be an identifier generated by the P-UE 115 instead of an identifier assigned to the P-UE 115 by the base station 105, the wireless communication system 100, a manufacturer, etc. In some examples, the P-UE 115 may contend for the use of the TP2V Duration 330. For example, P-UE 115 may P2V Before sending a message within a resource block of duration 330, a clear channel assessment process (e.g., a listen-before-talk (LBT) process) is performed to determine the channel for use in T P2V Resource blocks sent within duration 330.

[0129] In addition, the resource pool 320 may include a portion 335 (also referred to as “T V2P The resource pools 315 and 320 may be referred to as one or more of a transmission pool and a reception pool. The transmission and reception of the P-UE 115 and the V-UE 115 may be interchanged (e.g., the temporal order of the resource pools 315 and 320 may be reversed). That is, the transmission and reception may occur in any order.

[0130] The P-UE common wake-up cycle 300 may additionally or alternatively include paging occasions, wherein the V-UE 115 sends a paging indication message to the P-UE 115 on one or more paging resources 325. In some examples, the paging occasion may correspond to a specific subframe number (SFN) across multiple V-UEs 115, so that multiple V-UEs 115 can simultaneously broadcast paging indication messages on the same radio frequency spectrum band (or frequency channel) in the same one or more subframes. In some examples, the one or more paging resources 325 may include time and frequency resources adjacent to or between resource pools 315, 320. The V-UE 115 may send one or more paging indication signals during one or more paging occasions to notify the P-UE 115 of an impending collision indication (if such a collision is predicted). For example, the V-UE 115 may send a paging indication signal to the P-UE 115 during the paging occasion, which may be a warning message notifying the P-UE 115 that it is on a collision path with the V-UE 115. In some examples, a paging indication signal may be sent by one or more V-UEs 115 using paging resources 325, and the paging indication signal may indicate that at least one or more P-UEs 115 are in a collision path with one or more V-UEs 115, but may not provide detailed information about which P-UE 115 is in the collision path.

[0131] The P-UE 115 may monitor the paging message from the V-UE 115 and determine whether to activate or deactivate its corresponding PC5 interface based on whether a paging indication message is received in the paging resource 325. For example, if the P-UE 115 receives a paging indication message from the V-UE 115 in the paging resource 325, the P-UE 115 may activate or deactivate its corresponding PC5 interface within the T of the on-duration 305. V2P During the duration 330, V2P messages from one or more V-UEs 115 are monitored (listened) on the time and frequency resources associated with the resource pool 320. V2P After the duration 330 elapses, the P-UE 115 may deactivate its corresponding PC5 interface and switch to a reduced power mode (e.g., sleep mode) for the off-duration 310. In the case where no paging indication message is received from the V-UE in the paging resource 325 (i.e., the P-UE 115 does not receive a paging message from the V-UE 115), the P-UE 115 may deactivate its corresponding PC5 interface and switch to the reduced power mode after (e.g., immediately after) the paging opportunity until the next on-duration 305. Therefore, since the time period during which the P-UE 115 is in the reduced power mode is extended (e.g., T V2P Duration 330 plus T PC5OFF Duration 310), the P-UE 115 may experience additional power savings. Thus, the P-UE common wake-up period 300 may include features for improving UE 115 operation, and in some examples, may facilitate improved energy efficiency and other benefits by allowing a common PC5 wake-up period to be configured for the P-UE 115. Figures 4A to 4D Alternative wake-up cycles are further described in more detail.

[0132] Figure 4A An example of a P-UE specific wake-up cycle 400-a according to aspects of the present disclosure is shown. The P-UE specific wake-up cycle 400-a may be implemented as shown in FIG. Figure 1 and 2 Aspects of the wireless communication system 100 and the V2P wireless communication system 200. For example, the P-UE specific wake-up cycle 400-a can be based on the configuration of the base station 105 and implemented by the UE 115 to activate and deactivate certain RF components of the UE 115 to provide improvements in power management, as well as other advantages.

[0133] The P-UE specific wake-up cycle 400-a may correspond to the LTE Uu P-UE 115 wake-up cycle and may include an on-duration 405 (also referred to as “Uu ON Duration 405") and disconnection duration 410 (also referred to as "UuOFF The P-UE 115 may be configured to perform a P-5 wake-up period 410 during which the LTE P-UE 115 may switch in and out of a reduced power mode (e.g., a deep sleep mode). In some examples, the P-UE-specific wake-up period 400-a may correspond to a specific radio access technology, including a 4G system such as an LTE system, a 5G system which may be referred to as an NR system, and a Wi-Fi system (e.g., a wireless local area network (WLAN) system). The LTE Uu P-UE 115 may send or receive one or more paging messages during a paging occasion 415 associated with the paging frame 420. For example, the LTE P-UE 115 may provide an indication of one or more PC5 wake-up occasions to the V-UE 115 in a pedestrian-to-vehicle (P2V) message. Thus, the LTE P-UE 115 may activate and deactivate one or more radio frequency (RF) components. For example, the LTE P-UE 115 may activate a PC5 interface for receiving V2P messages from one or more V-UEs 115, or receive a PC5 message from one or more P-UEs 115, before deactivating (e.g., powering off) one or more LTE and NR radio RF components (e.g., antennas, RF circuits). 115 Send P2V message. Figure 4B Example wake-up cycles associated with PC5 interface operation are described in further detail.

[0134] Figure 4B An example of a P-UE specific wake-up cycle 400-b according to aspects of the present disclosure is shown. The P-UE specific wake-up cycle 400-b may be implemented as shown in FIG. Figure 1 and 2 Aspects of the wireless communication system 100 and the V2P wireless communication system 200. For example, the P-UE specific wake-up cycle 400-b can be based on the configuration of the base station 105 and implemented by the UE 115 to activate and deactivate the PC5 interface to support robustness of PC5 interface operation and improvement of power management related to PC5 interface operation, as well as other advantages.

[0135] The P-UE specific wake-up cycle 400-b may correspond to the PC5 P-UE 115 wake-up cycle and may include an on-duration 435 (also referred to as a “PC5 ON duration 435" or wake-up period) and disconnection duration 440 (also referred to as "PC5 OFF Duration 440”), where the PC5 P-UE 115 may switch in and out of a reduced power mode (eg, a deep sleep mode). PC5 ONDuration 435 may be associated with time and frequency resources of resource pool 425 associated with P2V communication and resource pool 430 associated with V2P communication. In some examples, there may not be any order in the resource pools (e.g., resource pool 425 or 430 may be flipped). The time and frequency resources associated with resource pools 425 and 430 may be continuous or discontinuous in one or more of the time domain and the frequency domain. In some examples, the time and frequency resources associated with resource pools 425 and 430 may be preconfigured. For example, the time and frequency resources associated with resource pools 425 and 430 may be a set of one or more PRBs configured by base station 105 or by a P-UE or V-UE.

[0136] In some examples, the P-UE specific wake-up cycle 400-b may follow Figure 4A 400 -a described in . For example, the P-UE-specific wake-up cycles 400-a, 400-b can be continuous in the time domain (e.g., occur back-to-back in the time domain to avoid switching on and off RF circuits (e.g., modems)). For example, the last symbol period of the paging occasion 415 can be adjacent in time to the start symbol period of the resource pool 425. In some cases, there may be an interval time period (delay) between the P-UE-specific wake-up cycles 400-a, 400-b. For example, the interval time period can be a plurality of symbols in the time domain (e.g., between Uu power-off and PC5 power-on). In some examples, the interval time period may correspond to the P-UE 115 deactivating certain RF components corresponding to the wireless access technology (e.g., LTE, NR) (e.g., disconnecting LTE, NR RF components) and activating the PC5 interface (e.g., turning on the PC5 interface). In some examples, the interval time period can be the duration between the last symbol period of the paging occasion 415 and the start symbol period of the resource pool 425 (e.g., one or more symbol periods). The PC5 wake-up cycle 400-b may be partially consistent with the Uu wake-up cycle 400-a. For example, the RF cooling of the Uu may be consistent with the RF preheating of the PC5. The PC5 wake-up cycle 400-b may be completely consistent with the Uu wake-up cycle 400-a because the RF preheating and cooling of the Uu and PC5 may be performed simultaneously. In order to accommodate the resource pool 425 (e.g., P2V pool) and resource pool 430 (e.g., V2P pool) of the PC5 aligned with the Uu wake-up, there may be a delay in the RF cooling of the Uu / PC5 interface.

[0137] PC5 interfaces (e.g. RF components) can be P2V 445 and T V2P450, during which the P-UE 115 may send information (e.g., pseudo-ID, location, intent, trajectory) and PC5 paging cycle information related to the next opportunity of the resource pool 425 to the V-UE 115 (e.g., wake-up SFN, time slot cycle, wake-up opportunity, etc.). One or more V-UEs 115 may use time and frequency resources in the resource pool 430 to send information (e.g., via V2P communication) during one or more wake-up opportunities of the P-UE 115 (e.g., based on the PC5 wake-up opportunity or PC5 wake-up schedule indicated by the P-UE 115 in the P2V message). The information sent may include a warning message including the pseudo-ID of one or more P-UEs 115, and one or more V-UEs 115 may be on a collision path with the one or more P-UEs 115 (e.g., a predicted collision). The P-UE 115 may receive the information and determine whether there are any warning messages addressed to the respective P-UE 115 , thereby performing one or more corrective actions (eg, notifying the respective pedestrian of the predicted collision path, eg, via a notification message, etc.).

[0138] Therefore, by associating the P-UE specific wake-up cycles 400-a, 400-b, the UE 115 can experience the benefits described herein. In addition, by linking the P-UE specific wake-up cycles 400-a, 400-b, the PC5 wake-up cycle can be different between different P-UEs 115. That is, by associating the P-UE 115 PC5 wake-up cycle with the LTE, NR wake-up cycle, the P-UE 115 can benefit from avoiding possible interference from other UEs 115 related to P2V, V2P communication.

[0139] Figure 4C An example of a P-UE specific wake-up cycle 400-c according to aspects of the present disclosure is shown. The P-UE specific wake-up cycle 400-c may be implemented as shown in FIG. Figure 1 and 2 Aspects of the wireless communication system 100 and the V2P wireless communication system 200. For example, the P-UE specific wake-up cycle 400-c can be based on the configuration of the base station 105 and implemented by the UE 115 to activate and deactivate the PC5 interface to support robustness of the PC5 interface operation and improvement of power management related to the PC5 interface operation, as well as other advantages.

[0140] and Figure 4A Compared to the P-UE specific wake-up cycle 400-a and P-UE 115 described in the above, the P-UE specific wake-up cycle 400-c may correspond to a different LTE P-UE 115 wake-up cycle and a different P-UE 115. Figure 4CAs shown, the on-duration 405 and the off-duration 410 are different from Figure 4A 4. The P-UE specific wake-up cycle 400-a and the on-duration 405 and off-duration 410 of the P-UE 115 described in . Therefore, the PC5 wake-up cycle associated with the P-UE specific wake-up cycle 400-c may be different.

[0141] Figure 4D An example of a P-UE specific wake-up cycle 400-d according to aspects of the present disclosure is shown. The P-UE specific wake-up cycle 400-d may be implemented as shown in FIG. Figure 1 and 2 Aspects of the wireless communication system 100 and the V2P wireless communication system 200 described herein. For example, the P-UE specific wake-up period 400-d may be based on the configuration of the base station 105 and implemented by the UE 115 to activate and deactivate the PC5 interface to support robustness of the PC5 interface operation and improvement of power management associated with the PC5 interface operation, among other advantages. Figure 4B The P-UE specific wake-up cycle 400 - d may correspond to a different PC5 P-UE 115 wake-up cycle and a different P-UE 115 compared to the P-UE specific wake-up cycle 400 - b and P-UE 115 described in FIG.

[0142] Figure 5 An example of a process flow 500 according to aspects of the present disclosure is shown. The process flow 500 may be implemented as described in reference Figure 1 and 2 Aspects of the wireless communication system 100 and the V2P wireless communication system 200 are described. For example, the process flow 500 can be based on the configuration of the base station 105 or the UE 115 and implemented by the UE 115 to reduce power consumption, improve the reliability of D2D communications such as V2P communications, and in some examples, improve low-latency D2D communications, among other benefits.

[0143] Process flow 500 may include UE 115-e, 115-f, which may be as described in reference Figure 1 and 2 115-f. For example, UE 115-e may be a V-UE (referred to herein as V-UE 115-e), and UE 115-f may be a P-UE (referred to herein as P-UE 115-f). In the following description of process flow 500, operations between V-UE 115-e and P-UE 115-f may be sent in an order different from the example order shown, or operations performed by V-UE 115-e and P-UE 115-f may be performed in a different order or at a different time, or both. Some operations may also be omitted from process flow 500, and other operations may be added to process flow 500.

[0144] At 505, the P-UE 115-f may identify a wake-up time period corresponding to a wake-up cycle. In some examples, the P-UE 115-f may identify a wake-up time period corresponding to a wake-up cycle based on, for example, receiving a wake-up configuration from the base station 105 or the V-UE 115-e. Alternatively, the P-UE 115 may autonomously decide on the next wake-up cycle. The wake-up configuration may indicate a wake-up time period and a wake-up cycle, Figure 3 Examples of this are discussed in .

[0145] At 510, the V-UE 115-e may identify a wake-up configuration for the wake-up time period. For example, the V-UE 115-e may identify the wake-up configuration based on receiving the configuration from the base station 105.

[0146] At 515, the P-UE 115-f may send a message to the V-UE 115-e. In some examples, the message may include an identifier of the P-UE 115-f. In some examples, the identifier may be a pseudo-identifier of the P-UE 115-f. Additionally or alternatively, the message may include location data of the P-UE 115-f, sensor data of the P-UE 115-f, trajectory data of the P-UE 115-f, or any combination thereof. The trajectory data may indicate a predicted geographic location of the P-UE 115-f over time based on a current speed and direction measured by the P-UE 115-f. Transmission of the message from the P-UE 115-f to the V-UE 115-e may be via a side link channel using a side link interface of the P-UE 115-f. In some examples, the P-UE 115-f may send a message within a first resource pool during a first portion of a wake-up period based on a wake-up cycle. In some examples, the P-UE 115 - f may perform a clear channel assessment procedure prior to sending a message within a resource block to determine a resource block for transmission within the first resource pool.

[0147] At 520, the V-UE 115-e may receive a message within the resource pool. For example, the V-UE 115-e may receive a message within the first portion of the wake-up period and the first resource pool. At 525, the P-UE 115-f may monitor for a paging signal during a paging occasion of the wake-up period.

[0148] At 530, the V-UE 115-e may send a paging signal to the P-UE 115-f. The V-UE 115-e may generate a prediction based on the message that the V-UE 115-e is on a collision course with the P-UE 115-f, and send a paging signal based on the prediction that a collision may occur. For example, the V-UE 115-e may predict a collision with the P-UE 115-f based on received position data of the P-UE 115-f, sensor data of the P-UE 115-f, trajectory data of the P-UE 115-f, or any combination thereof. The prediction may also be based on the position data of the V-UE 115-e, sensor data of the V-UE 115-e, trajectory data of the V-UE 115-e, or any combination thereof. The V-UE 115-e may use its data and the data received by the P-UE 115-f to predict whether a collision with the P-UE 115-f is possible, likely, or imminent. If a conflict is predicted, the V-UE 115-e may send a paging signal during the paging occasion.The V-UE 115-e may change the speed of the V-UE 115-e, the trajectory of the V-UE 115-e, or both based on the prediction.

[0149] At 535, the P-UE 115-f may monitor the second resource pool during the wake-up period for the collision warning message. At 540, the V-UE 115-e may send a collision warning message to the P-UE 115-f. The collision warning message may include an identifier of the P-UE 115-f transmitted at 515 and may be sent based on the V-UE 115-e predicting a collision with the P-UE 115-f. In some examples, the V-UE 115-e may communicate with a collection of P-UEs 115 and may send a collection of collision warning messages. Each collision warning message may include an identifier of each P-UE 115 with which the V-UE 115-e predicts a collision. In some cases, a single collision warning message may be sent that includes each P-UE 115 with which the V-UE 115-e predicts a collision. The P-UE 115 - f may receive the collision warning message, determine that the message includes an identifier of the P-UE 115 - f, and present an alert based on the collision warning message.

[0150] Figure 6 An example of a process flow 600 according to aspects of the present disclosure is shown. The process flow 600 may be implemented as described in reference Figure 1 and 2Aspects of the wireless communication system 100 and the V2P wireless communication system 200 are described. For example, the process flow 600 can be based on the configuration of the base station 105 or the UE 115 and implemented by the UE 115 to reduce power consumption, improve the reliability of D2D communications such as V2P communications, and in some examples, improve low-latency D2D communications, among other benefits.

[0151] Process flow 600 may include UE 115-g, 115-h, which may be as described in reference Figure 1 and 2 115-h). In the following description of process flow 600, operations between V-UE 115-g and P-UE 115-h may be sent in an order different from the example order shown, or operations performed by V-UE 115-g and P-UE 115-h may be performed in a different order or at different times. Some operations may also be omitted from process flow 600, and other operations may be added to process flow 600.

[0152] At 605, the P-UE 115-h may identify Figures 4A-4D For example, the P-UE 115-h may identify a paging opportunity of a first RAT, which may be different from a paging opportunity of a sidelink RAT. In some examples, the first RAT may be an LTE RAT or an NR RAT. The paging opportunity of the first RAT may be used to determine the location of a P-UE-specific wake-up cycle and the wake-up time period associated therewith. In some cases, the wake-up time period may be adjacent to the paging opportunity, may partially overlap with the paging opportunity, or may be offset in time from the paging opportunity.

[0153] At 610, the P-UE 115-h may send paging cycle information indicating a paging cycle of the wake-up time period. For example, the paging cycle information may indicate when the paging occasion 415 occurs, when the on-duration 435 occurs relative to the paging occasion 415, the duration of the paging occasion 415, the periodicity of the paging occasion 415, or any combination thereof. In some cases, the wake-up time period (e.g., the on-duration 435) may be adjacent to the paging occasion (e.g., the paging occasion 415), may partially overlap with the paging occasion, or may be offset in time from the paging occasion.

[0154] At 615, the P-UE 115-h may send a message via the sidelink RAT that may include a wake-up period (eg, T ) positioned relative to a paging occasion (eg, paging occasion 415) of the first RAT. P2V445). In some examples, the message may include location data of the P-UE 115-h, trajectory data of the P-UE 115-h, sensor data of the P-UE 115-h, or any combination thereof.

[0155] At 620, the V-UE 115-g may receive the message during a portion of the wake-up period. For example, the V-UE 115-g may receive the message during a first portion of the wake-up period that occurs relative to a paging occasion of the first RAT (e.g., T P2V In some cases, the V-UE 115-g may communicate with a set of P-UEs and may receive paging cycle information from each P-UE 115, similar to the message transmitted at 610, and messages from each P-UE 115, similar to the message transmitted at 615.

[0156] At 625, the P-UE 115-h may be in the second portion of the wake-up period (eg, T V2P 450). For example, the P-UE 115-h may monitor for collision warning messages during a second portion of the wake-up time period that occurs relative to the first portion.

[0157] At 630, if the V-UE 115-g predicts a collision with the P-UE 115-h as described herein, the V-UE 115-g may send a collision warning message to the P-UE 115-h. In some examples, the V-UE 115-g may communicate with a set of P-UEs 115 as described herein and may send a set of one or more collision warning messages. The V-UE 115-g may also attempt to prevent the collision as described herein. The collision warning message may include an identifier of the P-UE 115-h transmitted at 615 and may be sent based on the V-UE 115-g predicting a collision with the P-UE 115-h. The P-UE 115-h may receive the collision warning message, determine that the message includes an identifier of the P-UE 115-h, and present an alert based on the collision warning message.

[0158] Figure 7 A block diagram 700 of a device 705 according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of a UE 115 as described herein. For example, the device 705 may be a P-UE 115 or a V-UE 115. The device 705 may include a receiver 710, a communication manager 715, and a transmitter 720. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0159] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to power enhancement techniques for V2P wireless communication systems, etc.). The information may be passed to other components of the device 705. The receiver 710 may be a reference Fig.10 Examples of aspects of the transceiver 1020 are described. The receiver 710 may utilize a single antenna or a collection of antennas.

[0160] The communication manager 715 can identify a wake-up time period corresponding to a wake-up cycle, send a message including an identifier of the UE in a first resource pool during a first part of the wake-up time period based on the wake-up cycle, and monitor a paging signal from the vehicle UE during a paging opportunity in the wake-up time period based on sending the message. The communication manager 715 can also identify a wake-up configuration for the wake-up time period, receive a message in the first resource pool during the first part of the wake-up time period, the message including an identifier of the first UE and at least one of the location data of the first UE, the sensor data of the first UE, or the trajectory data of the first UE based on the wake-up configuration, and send a paging signal in a paging opportunity in the wake-up time period based on at least one of the location data, the sensor data, or the trajectory data.

[0161] The communication manager 715 may also identify a paging opportunity of the first RAT that is different from the paging opportunity of the sidelink RAT, send a message including an identifier of the UE via the sidelink RAT during a first portion of a wake-up time period located relative to the paging opportunity of the first RAT, and monitor a collision warning message including the identifier of the UE from the vehicle UE during a second portion of the wake-up time period occurring relative to the first portion. The communication manager 715 may also receive paging cycle information from the first UE, the paging cycle information indicating a paging cycle of the wake-up time period of the sidelink RAT relative to the paging opportunity configured by the first RAT for the first UE, receive a message including the identifier of the first UE during a first portion of the wake-up time period occurring relative to the paging opportunity of the first RAT, and send a collision warning message during a second portion of the wake-up time period occurring relative to the first portion based on the message. The communication manager 715 may be an example of aspects of the communication manager 1010 described herein.

[0162] The communication manager 715 or its subcomponents may be implemented by hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 715 or its subcomponents may be performed by a general purpose processor, a DSP, an application specific integrated circuit (ASIC), an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0163] The communication manager 715 or its subcomponents can be physically located in a variety of locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, the communication manager 715 or its subcomponents can be independent and distinct components according to various aspects of the present disclosure. In some examples, the communication manager 715 or its subcomponents can be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof according to various aspects of the present disclosure.

[0164] Transmitter 720 can transmit signals generated by other components of device 705. In some examples, transmitter 720 can be collocated with receiver 710 in a transceiver module. For example, transmitter 720 can be a reference Fig.10 Examples of aspects of the transceiver 1020 are described. The transmitter 720 may utilize a single antenna or a collection of antennas.

[0165] Figure 8 A block diagram 800 of a device 805 according to aspects of the present disclosure is shown. The device 805 may be an example of aspects of the device 705 or UE 115 as described herein. For example, the device 805 may be a P-UE 115 or a V-UE 115. The device 805 may include a receiver 810, a communication manager 815, and a transmitter 840. The device 805 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0166] The receiver 810 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to power enhancement techniques for V2P wireless communication systems, etc.). The information may be passed to other components of the device 805. The receiver 810 may be a reference Fig.10 Examples of aspects of the transceiver 1020 are described. The receiver 810 may utilize a single antenna or a collection of antennas.

[0167] Communications manager 815 may be an example of aspects of communications manager 715 as described herein. Communications manager 815 may include wakeup component 820, messaging component 825, monitoring component 830, and paging component 835. Communications manager 815 may be an example of aspects of communications manager 1010 as described herein.

[0168] The wake-up component 820 can identify a wake-up time period corresponding to the wake-up cycle. The message component 825 can send a message including an identifier of the device 805 in the first resource pool during a first portion of the wake-up time period based on the wake-up cycle. The monitoring component 830 can monitor a paging signal from the vehicle UE during a paging opportunity of the wake-up time period based on sending the message.

[0169] The wake-up component 820 can identify a wake-up configuration for the wake-up time period. The message component 825 can receive a message in the first resource pool within a first portion of the wake-up time period, the message including an identifier of the first UE and at least one of location data of the first UE based on the wake-up configuration, sensor data of the first UE, or trajectory data of the first UE. The paging component 835 can send a paging signal within a paging opportunity of the wake-up time period based on at least one of the location data, sensor data, or trajectory data.

[0170] The paging component 835 can identify a paging occasion of the first RAT that is different from the paging occasion of the sidelink RAT. The messaging component 825 can send a message via the sidelink RAT that includes an identifier of the UE during a first portion of the wake-up time period located relative to the paging occasion of the first RAT. The monitoring component 830 can monitor for a collision warning message from the vehicle UE that includes the identifier of the UE during a second portion of the wake-up time period that occurs relative to the first portion.

[0171] The paging component 835 may receive paging cycle information from the first UE, the paging cycle information indicating a paging cycle of a wake-up period of the sidelink RAT relative to a paging occasion configured by the first RAT for the first UE. The message component 825 may receive a message including an identifier of the first UE during a first portion of the wake-up period occurring relative to the paging occasion of the first RAT, and send a collision warning message based on the message during a second portion of the wake-up period occurring relative to the first portion.

[0172] The transmitter 840 can transmit signals generated by other components of the device 805. In some examples, the transmitter 840 can be collocated with the receiver 810 in the transceiver module. For example, the transmitter 840 can be a reference Fig.10 Examples of aspects of the transceiver 1020 are described. The transmitter 840 may utilize a single antenna or a collection of antennas.

[0173] Fig. 9Block diagram 900 of a communication manager 905 according to aspects of the present disclosure is shown. The communication manager 905 can be an example of aspects of the communication manager 715, the communication manager 815, or the communication manager 1010 described herein. The communication manager 905 can include a wakeup component 910, a message component 915, a monitoring component 920, a power component 925, a contention component 930, a paging component 935, an estimation component 940, and a delay component 945. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0174] The wake-up component 910 may identify a wake-up time period corresponding to a wake-up cycle. In some examples, the wake-up component 910 may identify a wake-up configuration for the wake-up time period. In some examples, the wake-up component 910 may receive a wake-up configuration indicating the wake-up time period and the wake-up cycle. In some examples, the wake-up component 910 may send or receive a wake-up configuration indicating a timing reference for the wake-up time period, the periodicity of the wake-up time period, or both. In some cases, the first portion of the wake-up time period occurs before or after the second portion of the wake-up time period.

[0175] The message component 915 may send a message including an identifier of the UE within the first resource pool during a first portion of a wake-up time period based on a wake-up cycle. In some examples, the message component 915 may receive a message within the first resource pool within the first portion of the wake-up time period, the message including an identifier of the first UE and at least one of location data of the first UE based on the wake-up configuration, sensor data of the first UE, or trajectory data of the first UE. In some examples, the message component 915 may send a message via a sidelink RAT, the message including an identifier of the UE during a first portion of the wake-up time period located relative to a paging occasion of the first RAT. In some examples, the message component 915 may receive a message including an identifier of the first UE during a first portion of the wake-up time period occurring relative to a paging occasion of the first RAT.

[0176] In some examples, the message component 915 may send a collision warning message based on the message during a second portion of the wake-up time period that occurs relative to the first portion. In some examples, the collision warning message includes an identifier of the UE and is sent based at least in part on the prediction. In some examples, the message component 915 may present an alert based on receiving the collision warning message. In some examples, the collision warning message includes an identifier of a second UE different from the UE. In some examples, the message component 915 may discard the collision warning message.

[0177] In some examples, the message component 915 can send a message including an identifier that is a pseudo-identifier of the UE. In some examples, the message component 915 can send a message including location data of the UE, sensor data of the UE, trajectory data of the UE, or any combination thereof. In some examples, the message component 915 can send a message via a side link channel using a side link interface of the UE.

[0178] In some examples, the message component 915 can receive a second message within the first resource pool within a first portion of the second wake-up time period, the second message including an identifier of the second UE and location data of the second UE. In some examples, the message component 915 can receive a message set including a set of identifiers for a set of UEs. In some examples, the message component 915 can send a collision warning message including an identifier of at least one UE based on the prediction during the second portion of the wake-up time period occurring relative to the paging occasion.

[0179] In some examples, the message component 915 may receive a message set including a set of identifiers for a set of UEs within a first portion of a second wake-up time period. In some examples, the message component 915 may receive a message including an identifier that is a pseudo-identifier of a first UE. In some examples, the message component 915 may receive a message via a side link channel using a side link interface of the UE. In some examples, the message component 915 may send a message including location data of the UE, trajectory data of the UE, sensor data of the UE, or any combination thereof. In some examples, the collision warning message includes an identifier of the UE. In some examples, the message component 915 may present an alert based on the collision warning message. In some examples, the collision warning message includes an identifier of a second UE different from the UE. In some examples, the message component 915 may discard the collision warning message. In some examples, the message component 915 may send a message via a side link channel using the side link RAT of the UE.

[0180] In some examples, the message component 915 may send a message including an identifier that is a pseudo-identifier of the UE. In some examples, the message component 915 may receive a message including location data of the first UE, trajectory data of the first UE, sensor data of the first UE, or any combination thereof. In some examples, the message component 915 may receive a second message including an identifier of the second UE during a first portion of a second wake-up time period occurring relative to a second paging occasion of the first RAT. In some examples, the message component 915 may send a second collision warning message during a second portion of the second wake-up time period occurring relative to the first portion based on the second message. In some examples, the message component 915 may receive a message via a side link channel using a side link RAT. In some examples, the message component 915 may receive a message including an identifier that is a pseudo-identifier of the first UE.

[0181] In some cases, the first portion of the wake-up period occurs before or after the second portion of the wake-up period. In some cases, the first portion of the wake-up period is aligned with, partially aligned with, occurs before or after a paging opportunity of the first RAT. In some cases, the first portion of the wake-up period occurs before or after the second portion of the wake-up period. In some cases, the first RAT is an LTE RAT or an NR RAT. In some cases, the first portion of the wake-up period is aligned with, partially aligned with, occurs before or after a paging opportunity of the first RAT. In some cases, the first portion of the wake-up period occurs before or after the second portion of the wake-up period.

[0182] The monitoring component 920 may monitor a paging signal from the vehicle UE during a paging opportunity of the wake-up time period based on sending the message. In some examples, during a second portion of the wake-up time period occurring relative to the first portion, a collision warning message including an identifier of the UE from the vehicle UE is monitored. In some examples, the monitoring component 920 may receive a paging signal during the paging opportunity. In some examples, the monitoring component 920 may monitor a second resource pool within the wake-up time period for collision warning messages from the vehicle UE based on receiving a paging signal during the second portion of the wake-up time period occurring relative to the first portion.

[0183] The paging component 935 may send a paging signal within a paging opportunity of the wake-up time period based on at least one of the location data, the sensor data, or the trajectory data. In some examples, the paging component 935 may identify a paging opportunity of a first RAT that is different from a paging opportunity of a side link RAT. In some examples, the paging component 935 may receive paging cycle information from a first UE, the paging cycle information indicating a paging cycle of a wake-up time period of the side link RAT relative to a paging opportunity configured by the first RAT for the first UE. In some examples, the paging component 935 may determine based on a prediction that a paging signal is not sent within a second paging opportunity of a second wake-up time period. In some examples, the paging component 935 may send paging cycle information indicating a paging cycle of a wake-up time period. In some examples, the paging component 935 may receive a second paging cycle information indicating a second paging cycle of a second wake-up time period of a second paging opportunity of the first RAT configured for a second UE, and the second wake-up time period is offset in time relative to the wake-up time period.

[0184] The power component 925 may begin entering the low power state after the wake-up time period that extends until the subsequent wake-up time period ends. In some examples, the power component 925 may begin entering the low power state at a second portion of the wake-up time period that extends until the subsequent wake-up time period based on determining that a paging signal is not received during a paging occasion within the wake-up time period. In some examples, the power component 925 may begin entering the low power state after the wake-up time period that extends until the subsequent wake-up time period ends.

[0185] Contention component 930 can perform a clear channel assessment procedure to determine a resource block for transmission within the first resource pool. In some examples, contention component 930 can send a message within the resource block based on the results of the clear channel assessment procedure.

[0186] The estimation component 940 may generate a prediction based on the message that the vehicle UE is on a collision course with the first UE, wherein a paging signal is sent within a paging opportunity of the wake-up time period based on the prediction. In some examples, the estimation component 940 may send a collision warning message including an identifier of the first UE within a second resource pool during a second portion of the wake-up time period occurring relative to the paging opportunity based on the prediction. In some examples, the estimation component 940 may change the speed of the vehicle including the vehicle UE, the trajectory of the vehicle, or both based on the prediction. In some examples, the estimation component 940 may generate an alert based on the prediction.

[0187] In some examples, the estimation component 940 may generate a prediction that the vehicle UE is not on a collision course with the second UE based on the second message. In some examples, the estimation component 940 may generate a prediction that the vehicle UE is on a collision course with at least one UE in the UE set based on the message set, wherein a paging signal is sent within a paging opportunity of a wake-up time period based on the prediction. In some examples, the estimation component 940 may generate a prediction that the vehicle UE is not on a collision course with any one of the UE set based on the message set. In some examples, the estimation component 940 may generate a prediction that the vehicle UE is on a collision course with a first UE based on the message, wherein the collision warning message includes an identifier of the first UE and is sent based on the prediction. In some examples, the estimation component 940 may change the speed of the vehicle including the vehicle UE, the trajectory of the vehicle, or both based on the prediction.

[0188] The delay component 945 may identify a configured delay between an end of a paging occasion of the first RAT and a start of a wake-up period of the sidelink RAT. In some examples, the delay component 945 may identify a configured delay between an end of a paging occasion of the first RAT and a start of a wake-up period of the sidelink RAT. In some cases, the first RAT is an LTE RAT or an NR RAT.

[0189] Fig.10 A diagram of a system 1000 including a device 1005 according to aspects of the present disclosure is shown. The device 1005 may be an example of or include components of a device 705, a device 805, or a UE 115 as described herein. For example, the device 1005 may be a P-UE 115 or a V-UE 115. The device 1005 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communications manager 1010, an I / O controller 1015, a transceiver 1020, an antenna 1025, a memory 1030, and a processor 1040. These components may be in electronic communication via one or more buses (e.g., a bus 1045).

[0190] The communication manager 1010 can identify a wake-up time period corresponding to a wake-up cycle, send a message including an identifier of the UE in a first resource pool during a first part of the wake-up time period based on the wake-up cycle, and monitor a paging signal from the vehicle UE during a paging opportunity in the wake-up time period based on sending the message. The communication manager 1010 can also identify a wake-up configuration for the wake-up time period, receive a message in the first resource pool during the first part of the wake-up time period, the message including an identifier of the first UE and at least one of location data of the first UE, sensor data of the first UE, or trajectory data of the first UE based on the wake-up configuration, and send a paging signal in a paging opportunity in the wake-up time period based on at least one of the location data, sensor data, or trajectory data.

[0191] The communication manager 1010 may also identify a paging opportunity of the first RAT that is different from the paging opportunity of the sidelink RAT, send a message including an identifier of the UE via the sidelink RAT during a first portion of a wake-up time period located relative to the paging opportunity of the first RAT, and monitor a collision warning message including the identifier of the UE from the vehicle UE during a second portion of the wake-up time period occurring relative to the first portion. The communication manager 1010 may also receive paging cycle information from the first UE that indicates a paging cycle of the wake-up time period of the sidelink RAT relative to the paging opportunity configured by the first RAT for the first UE, receive a message including the identifier of the first UE during the first portion of the wake-up time period occurring relative to the paging opportunity of the first RAT, and send a collision warning message during the second portion of the wake-up time period occurring relative to the first portion based on the message.

[0192] I / O controller 1015 can manage input and output signals for device 1005. I / O controller 1015 can also manage peripheral devices that are not integrated into device 1005. In some cases, I / O controller 1015 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1015 can utilize a computer such as a Or another known operating system. In other cases, I / O controller 1015 can be represented or interacted with by a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1015 can be implemented as part of a processor. In some cases, a user can interact with device 1005 via I / O controller 1015 or via hardware components controlled by I / O controller 1015.

[0193] The transceiver 1020 can communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 1020 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1020 can also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from the antenna. In some cases, the device 1005 can include a single antenna 1025. However, in some cases, the device 1005 can have more than one antenna 1025, which can be capable of sending or receiving multiple wireless transmissions simultaneously.

[0194] The memory 1030 may include RAM and ROM. The memory 1030 may store computer-readable computer executable code 1035, which includes instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory 1030 may contain BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0195] The code 1035 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications. The code 1035 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some cases, the code 1035 may not be directly executed by the processor 1040, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0196] Processor 1040 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1040 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into processor 1040. Processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to cause device 1005 to perform various functions (e.g., functions or tasks of supporting power enhancement technology for a V2P wireless communication system).

[0197] Fig.11 100 according to aspects of the present disclosure. The operations of the method 1100 may be implemented by the UE 115 or its components, as described herein. For example, the UE 115 may be a P-UE 115 or a V-UE 115. In some examples, the operations of the method 1100 may be implemented by the UE 115 or its components, as described herein. Figures 7 to 10The communication manager described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described herein.

[0198] At 1105, the UE may identify a wake-up time period corresponding to a wake-up cycle. The operations of 1105 may be performed according to the methods described herein. In some examples, aspects of the operations of 1105 may be as described in reference to Figures 7 to 10 The wake-up component is used to execute.

[0199] At 1110, the UE may send a message including an identifier of the UE within a first resource pool during a first portion of an awake time period based on an awake cycle. The operations of 1110 may be performed according to the methods described herein. In some examples, aspects of the operations of 1110 may be as described in reference to Figures 7 to 10 The message component is used to execute.

[0200] At 1115, the UE may monitor for paging signals from the vehicle UE during the paging occasion of the wake-up period based on sending the message. The operations of 1115 may be performed according to the methods described herein. In some examples, aspects of the operations of 1115 may be described with reference to Figures 7 to 10 The monitoring component is used to perform the above operation.

[0201] Fig.12 1 is a flow chart illustrating a method 1200 according to aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE 115 or a component thereof, as described herein. For example, the UE 115 may be a P-UE 115 or a V-UE 115. In some examples, the operations of the method 1200 may be implemented by a UE 115 or a component thereof, as described herein. Figures 7 to 10 The communication manager described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described herein.

[0202] At 1205, the UE may identify a wake-up configuration for the wake-up period. The operations of 1205 may be performed according to the methods described herein. In some examples, aspects of the operations of 1205 may be as described in reference to Figures 7 to 10 The wake-up component is used to execute.

[0203] At 1210, the UE may receive a message within the first resource pool within the first portion of the wake-up period, the message including an identifier of the first UE and at least one of location data of the first UE based on the wake-up configuration, sensor data of the first UE, or trajectory data of the first UE. The operations of 1210 may be performed according to the methods described herein. In some examples, aspects of the operations of 1210 may be performed as described in reference to Figures 7 to 10 The message component is used to execute.

[0204] At 1215, the UE may send a paging signal within a paging opportunity of the wake-up period based on at least one of the location data, the sensor data, or the trajectory data. The operation of 1215 may be performed according to the methods described herein. In some examples, aspects of the operation of 1215 may be as described in reference to Figures 7 to 10 The paging component is used to perform the above operation.

[0205] Fig.13 1300 according to aspects of the present disclosure. The operations of the method 1300 may be implemented by the UE 115 or its components, as described herein. For example, the UE 115 may be a P-UE 115 or a V-UE 115. In some examples, the operations of the method 1300 may be implemented by the UE 115 or its components, as described herein. Figures 7 to 10 The communication manager described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described herein.

[0206] At 1305, the UE may identify a paging occasion of a first RAT that is different from a paging occasion of a sidelink RAT. The operations of 1305 may be performed according to the methods described herein. In some examples, aspects of the operations of 1305 may be as described in reference to Figures 7 to 10 The paging component is used to perform the above operation.

[0207] At 1310, the UE may send a message via the sidelink RAT that includes an identifier of the UE during a first portion of a wake-up period located relative to a paging opportunity of the first RAT. The operations of 1310 may be performed according to the methods described herein. In some examples, aspects of the operations of 1310 may be as described with reference to Figures 7 to 10 The message component is used to execute.

[0208] At 1315, the UE may monitor for collision warning messages including an identifier of the UE from the vehicle UE during a second portion of the wake-up time period occurring relative to the first portion. The operations of 1315 may be performed according to the methods described herein. In some examples, aspects of the operations of 1315 may be described with reference to Figures 7 to 10 The monitoring component is used to perform the above operation.

[0209] Fig.14 1400 according to aspects of the present disclosure. The operations of the method 1400 may be implemented by the UE 115 or its components, as described herein. For example, the UE 115 may be a P-UE 115 or a V-UE 115. In some examples, the operations of the method 1400 may be implemented by the UE 115 or its components, as described herein. Figures 7 to 10 The communication manager described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described herein.

[0210] At 1405, the UE may receive paging cycle information from the first UE, the paging cycle information indicating a paging cycle of a wake-up period of the sidelink RAT relative to a paging occasion configured by the first RAT for the first UE. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be as described in reference to Figures 7 to 10 The paging component is used to perform the above operation.

[0211] At 1410, the UE may receive a message including an identifier of the first UE during a first portion of a wake-up period occurring relative to a paging occasion of the first RAT. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be as described in reference to Figures 7 to 10 The message component is used to execute.

[0212] At 1415, the UE may send a collision warning message during a second portion of the wake-up time period occurring relative to the first portion based on the message. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be as described with reference to Figures 7 to 10 The message component is used to execute.

[0213] It should be noted that the methods described herein describe possible implementations, and that operations and steps may be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0214] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable to applications beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0215] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0216] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration.

[0217] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored or transmitted on a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or any combination of these. Features that implement the functions may also be physically located in various locations, including being distributed so that portions of the functions are implemented in different physical locations.

[0218] Computer readable medium includes both non-transitory computer storage medium and communication medium, and computer storage medium and communication medium include any medium that helps to transfer computer program from one place to another place.Non-transitory storage medium can be any available medium that can be accessed by general or special-purpose computer.As an example and not limitation, non-transitory computer readable medium may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, disk storage or other magnetic storage device, or can be used to carry or store required program code mode in the form of instruction or data structure and can be accessed by general or special-purpose computer, or any other non-transitory medium of general or special-purpose processor.In addition, any connection is appropriately referred to as computer readable medium.For example, if coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave) are used to send software from website, server or other remote source, coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology (such as infrared, radio and microwave) are included in the definition of computer readable medium. Disk and disc, as used herein, includes CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0219] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items terminated by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0220] In the drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference that distinguishes between similar components. If only the first reference number is used in the specification, the specification applies to any of the similar components having the same first reference number, regardless of the second or other subsequent reference numbers.

[0221] The description presented herein in conjunction with the accompanying drawings describes exemplary configurations and does not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "superior to other examples." In order to provide an understanding of the described technology, the detailed description includes specific details. However, these technologies may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0222] The description herein is provided to enable those skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but will be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication by a user equipment UE, comprising: identifying a wake-up time period corresponding to a wake-up cycle; sending, within a first resource pool, a message including an identifier of the UE during a first portion of the wake-up time period based at least in part on the wake-up cycle; as well as Based at least in part on sending the message, monitoring for a paging signal from a vehicle UE during a paging occasion of the wake-up time period, wherein resources of the paging occasion are temporally adjacent to resources of the first resource pool.

2. The method according to claim 1, further comprising: receiving the paging signal during the paging occasion; as well as During a second portion of the wake-up time period occurring relative to the first portion, a second resource pool within the wake-up time period is monitored for collision warning messages from the vehicle UE based at least in part on receiving the paging signal.

3. The method of claim 2, wherein monitoring the second resource pool comprises: receiving the collision warning message including the identifier of the UE; as well as An alert is presented based at least in part on receiving the collision warning message.

4. The method according to claim 2, further comprising: receiving a collision warning message including an identifier of a second UE different from the UE; as well as The collision warning message is discarded.

5. The method according to claim 2, further comprising: Entering the low power state is initiated after the end of the wake-up period extending until a subsequent wake-up period.

6. The method according to claim 1, further comprising: Based at least in part on determining that the paging signal is not received during the paging occasion within the wake-up time period, entering a low power state is initiated during a second portion of the wake-up time period extending into a subsequent wake-up time period.

7. The method of claim 1 , wherein sending the message comprises: performing a clear channel assessment procedure to determine a resource block for transmission within the first resource pool; The message is sent within the resource block based at least in part on a result of the clear channel assessment procedure.

8. The method of claim 1, wherein sending the message comprises: The message is sent including the identifier being a pseudo identifier of the UE.

9. The method of claim 1 , wherein sending the message comprises: The message is sent including the location data of the UE, the sensor data of the UE, the trajectory data of the UE, or any combination thereof.

10. The method of claim 1, wherein sending the message comprises: The message is sent via a sidelink channel using a sidelink interface of the UE.

11. The method of claim 1 , wherein identifying the wake-up time period comprises: A wake-up configuration indicating the wake-up time period and the wake-up cycle is received. 12 . The method of claim 1 , wherein the first portion of the wake-up time period occurs before or after the second portion of the wake-up time period.

13. A method for wireless communication by a vehicle user equipment UE, comprising: identifying a wake-up configuration for the wake-up time period; receiving a message in a first resource pool within a first portion of the wake-up period, the message comprising an identifier of a first UE and at least one of location data of the first UE, sensor data of the first UE, or trajectory data of the first UE based at least in part on the wake-up configuration; as well as Based at least in part on at least one of the location data, the sensor data, or the trajectory data, a paging signal is sent within a paging occasion of the wake-up period, wherein resources of the paging occasion are temporally adjacent to resources of the first resource pool.

14. The method according to claim 13, further comprising: The wake-up configuration is sent or received indicating a timing reference of the wake-up period, a periodicity of the wake-up period, or both.

15. The method according to claim 13, further comprising: A prediction is generated based at least in part on the message that the vehicle UE is on a collision course with the first UE, wherein the paging signal is sent within the paging occasion of the wake-up time period based at least in part on the prediction.

16. The method according to claim 15, further comprising: A collision warning message including the identifier of the first UE is sent within a second resource pool during a second portion of the wake-up time period occurring relative to the paging occasion based at least in part on the prediction.

17. The method according to claim 15, further comprising: The prediction may be based at least in part on changing a speed of a vehicle including the vehicle UE, a trajectory of the vehicle, or both.

18. The method according to claim 15, further comprising: An alert is generated based at least in part on the prediction.

19. The method according to claim 13, further comprising: receiving a second message in the first resource pool within a first portion of the second wake-up time period, the second message including an identifier of a second UE and location data of the second UE; generating a prediction that the vehicle UE is not on a collision course with the second UE based at least in part on the second message; as well as A determination is made based at least in part on the prediction not to send the paging signal during a second paging occasion of the second wake-up time period.

20. The method of claim 13, further comprising: receiving a plurality of messages including a plurality of identifiers of a plurality of UEs; as well as A prediction is generated based at least in part on the plurality of messages that the vehicle UE is on a collision course with at least one UE of the plurality of UEs, wherein the paging signal is sent within the paging occasion of the wake-up time period based at least in part on the prediction.

21. The method according to claim 20, further comprising: During a second portion of the wake-up time period occurring relative to the paging occasion, a collision warning message including an identifier of the at least one UE is sent based at least in part on the prediction.

22. The method of claim 13, further comprising: receiving, within a first portion of a second wake-up time period, a plurality of messages including a plurality of identifiers of a plurality of UEs; generating a prediction that the vehicle UE is not on a collision path with any of the plurality of UEs based at least in part on the plurality of messages; as well as A determination is made based at least in part on the prediction not to send the paging signal during a second paging occasion of the second wake-up time period.

23. The method of claim 13, wherein receiving the message comprises: The message including the identifier being a pseudo identifier of the first UE is received.

24. The method of claim 13, wherein receiving the message comprises: The message is received via a sidelink channel using a sidelink interface of the UE.

25. The method of claim 13, wherein the first portion of the wake-up time period occurs before or after the second portion of the wake-up time period.

26. A method for wireless communication by a user equipment UE, comprising: identifying a paging occasion of a first RAT different from a paging occasion of a sidelink radio access technology, RAT′; sending, via the sidelink RAT, a message comprising an identifier of the UE during a first portion of a wake-up time period located relative to the paging occasion of the first RAT; During a second portion of the wake-up time period occurring relative to the first portion, monitoring for a collision warning message from a vehicle UE including the identifier of the UE, wherein resources of the first portion are temporally adjacent to resources of the second portion.

27. The method according to claim 26, further comprising: Paging cycle information indicating a paging cycle of the wake-up time period is sent.

28. The method of claim 26, wherein sending the message comprises: The message is sent including the location data of the UE, the trajectory data of the UE, the sensor data of the UE, or any combination thereof.

29. A method for wireless communication by a vehicle user equipment UE, comprising: receiving paging cycle information from a first UE, the paging cycle information indicating a paging cycle of a wake-up period of a sidelink RAT relative to a paging occasion configured by a first radio access technology RAT for the first UE; receiving, during a first portion of the wake-up time period occurring relative to the paging occasion of the first RAT, a message including an identifier of the first UE; A collision warning message is sent during a second portion of the wake-up time period occurring relative to the first portion based at least in part on the message, wherein resources of the first portion are temporally adjacent to resources of the second portion.

30. The method of claim 29, wherein receiving the message comprises: The message is received including location data of the first UE, trajectory data of the first UE, sensor data of the first UE, or any combination.

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