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公开(公告)号:US09497683B2
公开(公告)日:2016-11-15
申请号:US14417012
申请日:2013-07-24
Inventor: Hyun Seo Park , Sung-Min Oh , Ae-Soon Park , Eunah Kim , Sook Yang Kang , JaeSheung Shin , Pyeong Jung Song
Abstract: A UE does not immediately perform handover after receiving a handover command from a serving base station, but instead backups that message and continuously compares the signal strength of a serving base station and the signal strength of a target base station and performs a handover to the target base station at the best timing when handover is required. Once the timing of handover is determined, the UE transmits a handover indication message to the serving base station, and thereafter the UE performs a handover to the target base station.
Abstract translation: 在从服务基站接收到切换命令之后,UE不立即执行切换,而是备份该消息,并且连续地比较服务基站的信号强度和目标基站的信号强度并执行到目标的切换 基站需要切换时的最佳时间。 一旦确定了切换的定时,则UE向服务基站发送切换指示消息,此后,UE对目标基站进行切换。
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公开(公告)号:US09521605B2
公开(公告)日:2016-12-13
申请号:US14737245
申请日:2015-06-11
Inventor: Sung-Min Oh , Sook-Yang Kang , Hyun-Seo Park , Ae-Soon Park
CPC classification number: H04W36/30 , H04B7/022 , H04B7/0408 , H04B7/0617 , H04B7/0695 , H04B7/088 , H04W36/06 , H04W72/1231
Abstract: A method and apparatus for handover is provided. In a network environment in which a plurality of beams are provided within a base station, a terminal measures signal strength of a serving beam and signal strength of a target beam and transmits a measurement report message when a first condition or a second condition is satisfied. The base station determines inter-beam coordinated scheduling when the signal strength of the serving beam and target beam satisfy the first condition, and determines handover between beams when the signal strength of the serving beam and target beam satisfy the second condition. The base station transmits a message for commanding handover to the terminal when the handover between beams is determined. The terminal then stops communicating with the serving beam and performs handover to the target beam.
Abstract translation: 提供了一种用于切换的方法和装置。 在其中在基站内设置多个波束的网络环境中,终端测量服务波束的信号强度和目标波束的信号强度,并且当满足第一条件或第二条件时发送测量报告消息。 当服务光束和目标光束的信号强度满足第一条件时,基站确定光束间协调调度,并且当服务光束和目标光束的信号强度满足第二条件时,确定光束之间的切换。 当确定光束之间的切换时,基站向终端发送用于命令切换的消息。 终端然后停止与服务波段的通信并执行到目标波束的切换。
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公开(公告)号:US10004089B2
公开(公告)日:2018-06-19
申请号:US15192328
申请日:2016-06-24
Inventor: Changhee Lee , Taesoo Kwon , Jae Heung Kim , Jung-Im Kim , Ok-Sun Park , JaeSheung Shin , Sung-Min Oh , Hyun-yong Hwang
CPC classification number: H04W74/0841 , H04W74/006
Abstract: A base station infers a random access failure rate depending on a random access collision of terminals performing random access and controls a random access opportunity of a terminal that fails the random access by using the random access failure rate of each terminal. Also, information for the controlled random access opportunity is transmitted to the terminal that fails the random access.
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公开(公告)号:US09867156B2
公开(公告)日:2018-01-09
申请号:US14820551
申请日:2015-08-06
Inventor: Changhee Lee , Wooram Shin , Sung-Min Oh , Ae-Soon Park , Jeong Hwan Lee
CPC classification number: H04W56/004 , H04L27/2678 , H04W56/0095 , H04W76/14 , H04W88/04
Abstract: A method for synchronization by a D2D terminal in a D2D communication network through receiving a first D2D synchronization signal from at least one D2D synchronization source and performing synchronization according to a synchronization timing reference provided through the first D2D synchronization signal, and a method for negotiating whether to perform a role as a synchronization source with another D2D synchronization source through determining, when a D2D synchronization signal and a D2D synchronization channel are received from at least one D2D synchronization source, whether to maintain a role as the independent synchronization source based on negotiation information for negotiation between synchronization sources included in the D2D synchronization channel, and operating as a relaying synchronization source when the role as the independent synchronization source is not maintained, are provided.
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