Repeater operation method and apparatus in wireless communication system

    公开(公告)号:US10298314B2

    公开(公告)日:2019-05-21

    申请号:US15819091

    申请日:2017-11-21

    Abstract: A method of supporting a user equipment (UE) to UE (UE-to-UE) communication by a network in a wireless communication system, the method includes transmitting a system information block associated with the UE-to-UE communication, wherein the system information block contains a period parameter indicating a periodicity at which a relay UE transmits discovery announcement, wherein the system information block contains a high threshold value and a low threshold value, wherein the relay UE is not allowed to transmit the discovery announcement if a reference signal received power (RSRP) measured by the relay UE is above the high threshold value, and wherein the relay UE is not allowed to transmit the discovery announcement if the RSRP measured by the relay UE is below the low threshold value.

    Method and device for selecting relay in wireless communication system

    公开(公告)号:US10154475B2

    公开(公告)日:2018-12-11

    申请号:US15327164

    申请日:2015-08-10

    Abstract: An embodiment of the present invention relates to a method of selecting, by a first UE, a relay in a proximity service (ProSe) in a wireless communication system, the method including the steps of transmitting a UE-to-Network Relay discovery message; selecting a second UE as the UE-to-Network Relay; setting a connection for direct communication with the second UE; and transmitting a registration request message to a group communication service application server (GCS AS) through the second UE, wherein when the UE-to-Network Relay discovery message includes UE-to-UE Relay related request information, the UE-to-UE Relay related information is received from the second UE and the second UE is selected as the UE-to-UE Relay based on the UE-to-UE relay related information.

    Method and device for selecting access network in wireless communication system

    公开(公告)号:US10111146B2

    公开(公告)日:2018-10-23

    申请号:US14912576

    申请日:2014-09-29

    Abstract: The present invention relates to a wireless communication system, and more specifically, a method and a device for selecting an access network are disclosed. A method by which a terminal selects an access network in a wireless communication system, according to one embodiment of the present invention, can comprise the steps of: determining whether a packet service can be performed through a wireless LAN (WLAN) in use when the packet service is set to select a WLAN access network as an access network of the terminal for the packet service according to a predetermined rule while the terminal is using the WLAN; and performing an access network selection operation including a WLAN selection or a WLAN reselection as a candidate on the basis of the result of the determination step.

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

    公开(公告)号:US10051602B2

    公开(公告)日:2018-08-14

    申请号:US15489685

    申请日:2017-04-17

    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.

    Method for selecting an enhanced packet data gateway (EPDG) by a user equipment

    公开(公告)号:US10028209B2

    公开(公告)日:2018-07-17

    申请号:US15381503

    申请日:2016-12-16

    Abstract: One disclosure of the present invention provides a method for selecting an enhanced packet data gateway (ePDG). The method may be performed by a user equipment (UE) and comprise: determining, by the UE which has roamed from a home public land mobile network (H-PLMN) to a visited public land mobile network (V-PLMN), whether there exists an indication for selecting ePDG in the V-PLMN; determining, by the UE, whether the UE has attached to any PLMN in the V-PLMN, when it is determined that there exists the indication; determining, by the UE, whether there exists an ePDG PLMN list for the any PLMN in the V-PLMN, when it is determined that the UE has attached to the any PLMN; and selecting, by the UE, at least one ePDG in the ePDG PLMN list.

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