# US 11,452,043 B2 · Power enhancement techniques for vehicle-to-pedestrian wireless communication systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,452,043 B2 - Document ID: US11452043B2 - Status: Granted - Kind: B2 - Application number: 16/901,257 - Filed: 2020-06-15 - Published: 2020-12-24 - Granted: 2022-09-20 - Earliest claimed: 2019-06-24 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Anantharaman Balasubramanian; Sudhir Kumar Baghel; Shailesh Patil; James Francis Geekie; Farrukh Rashid; Cheol Hee Park - Web page: https://patentgrep.com/patent/US11452043B2 ## CPC - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 52/0235: {where the received signal is a power saving command} - H04W 4/14: Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD] - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - H04W 52/0258: {controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day} - H04W 68/02: Arrangements for increasing efficiency of notification or paging channel - H04W 68/025: {Indirect paging} - H04W 72/04: Wireless resource allocation - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a wake up time period corresponding to a wake up cycle, transmit a message that includes 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 for a paging signal from a vehicle UE during a paging occasion of the wake up time period based on transmitting the message. A vehicle UE may identify a wake up configuration for a wake up time period, receive, within a first portion of the wake up time period, a message within a resource pool that includes the identifier of the UE. The vehicle UE may transmit a paging signal within a paging occasion of the wake up time period. ## Claims ### Claim 1 A method for wireless communication by a user equipment (UE), comprising: identifying a wake up time period corresponding to a wake up cycle; transmitting a message that comprises an identifier of the UE within a first resource pool during a first portion of the wake up time period based at least in part on the wake up cycle; and monitoring for a paging signal from a vehicle UE during a paging occasion of the wake up time period based at least in part on transmitting the message, wherein a resource of the paging occasion is adjacent in time to a resource of the first resource pool. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving the paging signal during the paging occasion; and monitoring, during a second portion of the wake up time period that occurs relative to the first portion, a second resource pool within the wake up time period for a collision warning message from the vehicle UE based at least in part on receiving the paging signal. ### Claim 3 (depends on 2) The method of claim 2, wherein monitoring the second resource pool comprises: receiving the collision warning message that comprises the identifier of the UE; and presenting an alert based at least in part on receiving the collision warning message. ### Claim 4 (depends on 2) The method of claim 2, further comprising: receiving the collision warning message that comprises an identifier of a second UE that is different than the UE; and discarding the collision warning message. ### Claim 5 (depends on 2) The method of claim 2, further comprising: entering a low power state beginning after an end of the wake up time period that extends until a subsequent wake up time period. ### Claim 6 (depends on 1) The method of claim 1, further comprising: entering a low power state beginning at a second portion of the wake up time period that extends until a subsequent wake up time period based at least in part on determining that the paging signal was not received during the paging occasion within the wake up time period. ### Claim 7 (depends on 1) The method of claim 1, wherein transmitting the message comprises: performing a clear channel assessment procedure to determine a resource block for transmission within the first resource pool; and transmitting the message within the resource block based at least in part on a result of the clear channel assessment procedure. ### Claim 8 (depends on 1) The method of claim 1, wherein transmitting the message comprises: transmitting the message comprising the identifier that is a pseudo identifier of the UE. ### Claim 9 (depends on 1) The method of claim 1, wherein transmitting the message comprises: transmitting the message comprising location data of the UE, sensor data of the UE, trajectory data of the UE, or any combination thereof. ### Claim 10 (depends on 1) The method of claim 1, wherein transmitting the message comprises: transmitting the message via a sidelink channel using a sidelink interface of the UE. ### Claim 11 (depends on 1) The method of claim 1, wherein identifying the wake up time period comprises: receiving a wake up configuration that indicates the wake up time period and the wake up cycle. ### Claim 12 (depends on 1) The method of claim 1, wherein the first portion of the wake up time period occurs before or after a second portion of the wake up time period. ### Claim 13 A method for wireless communication by a vehicle user equipment (UE), comprising: identifying a wake up configuration for a wake up time period; receiving, within a first portion of the wake up time period, a message within a first resource pool that comprises 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; and transmitting a paging signal within a paging occasion of the wake up time period based at least in part on receiving the message and at least one of the location data, the sensor data, or the trajectory data, wherein a resource of the paging occasion is adjacent in time to a resource of the first resource pool. ### Claim 14 (depends on 13) The method of claim 13, further comprising: transmitting or receiving the wake up configuration that indicates a timing reference of the wake up time period, a periodicity of the wake up time period, or both. ### Claim 15 (depends on 13) The method of claim 13, further comprising: generating a prediction that the vehicle UE is on a collision course with the first UE based at least in part on the message, wherein the paging signal is transmitted within the paging occasion of the wake up time period based at least in part on the prediction. ### Claim 16 (depends on 15) The method of claim 15, further comprising: transmitting a collision warning message comprising the identifier of the first UE within a second resource pool during a second portion of the wake up time period that occurs relative to the paging occasion based at least in part on the prediction. ### Claim 17 (depends on 15) The method of claim 15, further comprising: altering a speed of a vehicle that includes the vehicle UE, a trajectory of the vehicle, or both, based at least in part on the prediction. ### Claim 18 (depends on 15) The method of claim 15, further comprising: generating an alert based at least in part on the prediction. ### Claim 19 (depends on 13) The method of claim 13, further comprising: receiving, within a first portion of a second wake up time period, a second message within a first resource pool that comprises 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; and determining not to transmit the paging signal within a second paging occasion of the second wake up time period based at least in part on the prediction. ### Claim 20 (depends on 13) The method of claim 13, further comprising: receiving a plurality of messages that comprises a plurality of identifiers for a plurality of UEs; and generating a prediction that the vehicle UE is on a collision course with at least one UE of the plurality of UEs based at least in part on the plurality of messages, wherein the paging signal is transmitted within the paging occasion of the wake up time period based at least in part on the prediction. ### Claim 21 (depends on 20) The method of claim 20, further comprising: transmitting, during a second portion of the wake up time period that occurs relative to the paging occasion, a collision warning message comprising an identifier of the at least one UE based at least in part on the prediction. ### Claim 22 (depends on 13) The method of claim 13, further comprising: receiving, within a first portion of a second wake up time period, a plurality of messages that comprises a plurality of identifiers for a plurality of UEs; generating a prediction that the vehicle UE is not on a collision course with any of the plurality of UEs based at least in part on the plurality of messages; and determining not to transmit the paging signal within a second paging occasion of the second wake up time period based at least in part on the prediction. ### Claim 23 (depends on 13) The method of claim 13, wherein receiving the message comprises: receiving the message comprising the identifier that is a pseudo identifier of the first UE. ### Claim 24 (depends on 13) The method of claim 13, wherein receiving the message comprises: receiving the message via a sidelink channel using a sidelink interface of the first UE. ### Claim 25 (depends on 13) The method of claim 13, wherein the first portion of the wake up time period occurs before or after a second portion of the wake up time period. ### Claim 26 A method for wireless communications by a user equipment (UE), comprising: identifying a paging occasion for a first radio access technology (RAT) that is different than a paging occasion of a sidelink RAT; transmitting, via the sidelink RAT, a message that comprises an identifier of the UE during a first portion of a wake up time period positioned relative to the paging occasion of the first RAT; and monitoring, during a second portion of the wake up time period that occurs relative to the first portion and based at least in part on transmitting the message that comprises the identifier of the UE, for a collision warning message from a vehicle UE that comprises the identifier of the UE, wherein a resource of the first portion is adjacent in time to a resource of the second portion. ### Claim 27 (depends on 26) The method of claim 26, further comprising: transmitting paging cycle information that indicates a paging cycle of the wake up time period. ### Claim 28 (depends on 26) The method of claim 26, wherein transmitting the message comprises: transmitting the message comprising a location data of the UE, trajectory data of the UE, sensor data of the UE, or any combination thereof. ### Claim 29 A method for wireless communications by a vehicle user equipment (UE), comprising: receiving, from a first UE, paging cycle information that indicates a paging cycle of a wake up time period for a sidelink radio access technology (RAT) relative to a paging occasion configured for the first UE by a first RAT; receiving a message that comprises an identifier of the first UE during a first portion of the wake up time period that occurs relative to the paging occasion of the first RAT; and transmitting, based at least in part on the message, a collision warning message during a second portion of the wake up time period that occurs relative to the first portion, wherein a resource of the first portion is adjacent in time to a resource of the second portion. ### Claim 30 (depends on 29) The method of claim 29, wherein receiving the message comprises: receiving the message comprising a location data of the first UE, trajectory data of the first UE, sensor data of the first UE, or any combination.