Method for performing V2X communication in wireless communication system and apparatus for same

    公开(公告)号:US11026070B2

    公开(公告)日:2021-06-01

    申请号:US16736697

    申请日:2020-01-07

    Abstract: Disclosed are a method for performing V2X communication in a wireless communication system and an apparatus for the same. Specifically, a method for performing vehicle-to-everything (V2X) communication by a user equipment (UE) in a wireless communication system includes: receiving a transmission request of a V2X message of a V2X service identified by a V2X service identifier from an upper layer by using V2X communication through a PC5 interface, the transmission request including the V2X message and the V2X service identifier; requesting or selecting a resource for the V2X communication through the PC5 interface to a base station based on whether the UE is serviced by an evolved universal terrestrial radio access network (E-UTRAN) for the V2X communication; and transmitting the V2X message through the PC5 interface by transferring the V2X message to a lower layer, and when mapping between the V2X service identifier and a transmission parameter is configured, the transmission parameter associated with the V2X service identifier may be transferred to the lower layer together with the V2X message.

    Method for transmitting RRC message and wireless device

    公开(公告)号:US10999781B2

    公开(公告)日:2021-05-04

    申请号:US16348815

    申请日:2017-01-09

    Abstract: One disclosure of the present specification provides a method by which a wireless device transmits an RRC message. The method can comprise the steps of: allowing, an AS layer of the wireless device, to acquire an NAS signaling request message, an RRC establishment cause field, and a call type field from an NAS layer; checking the acquired RRC establishment cause field and the call type field; determining, when the NAS signaling request message includes user data according to an optimization plan through a control plane, whether to perform or skip an examination for access blocking (AB) based on the RRC establishment cause field and/or the call type field; and transmitting, when blocking is not achieved or when the examination is skipped according to the examination result, an RRC connection request message to a base station so as to transmit the NAS signaling request message including the user data.

    Method for performing PLMN selection and device supporting the same

    公开(公告)号:US10798648B2

    公开(公告)日:2020-10-06

    申请号:US16629023

    申请日:2018-08-13

    Abstract: Provided are a method of performing public land mobile network (PLMN) selection and a device supporting the method. According to one embodiment of the present invention, a method for performing PLMN selection in a wireless communication system includes: entering an RRC_INACTIVE state; transmitting, to a non-access stratum (NAS) layer of the UE, information on whether or not there is on-going data; receiving, from the NAS layer of the UE, a request of a PLMN searching when there is no on-going data; and performing the PLMN searching based on the request of the PLMN searching.

    Method and apparatus for monitoring user equipment reachability in wireless communication system

    公开(公告)号:US10721713B2

    公开(公告)日:2020-07-21

    申请号:US16544584

    申请日:2019-08-19

    Abstract: Disclosed herein are a method and apparatus for monitoring UE reachability in a wireless communication system. A method for monitoring UE reachability may include receiving, by a Mobility Management Entity, a monitoring request message for UE reachability including a maximum response time from a Home Subscriber Server, detecting, by the MME, the UE reachability if it is expected that paging is able to be transmitted to UE when extended Discontinuous Reception is applied to the UE, and sending, by the MME, a UE reachability notification to a Service Capability Exposure Function before a next paging occasion of the UE, wherein the maximum response time may indicate a time during which the UE maintains a reachable state so that downlink data is reliably delivered to the UE, and wherein an occasion when the UE reachability notification is transmitted may be determined by taking into consideration the maximum response time.

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