METHOD FOR PERFORMING, BY TERMINAL, RANDOM ACCESS PROCEDURE OVER NETWORK IN WHICH MULTIPLE COMMUNICATION SYSTEMS INTERWORK, AND APPARATUS THEREFOR

The method for performing, by a terminal, a random access procedure over a network in which a plurality of communication systems interwork, according to the present invention, may comprise the steps of: forming an association with an access point (AP) of an adjacent wireless local area network (WLAN...

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Main Authors CHO, HEEJEONG, CHOI, HYEYOUNG, LEE, EUNJONG, HAHN, GENEBECK, CHUNG, JAEHOON
Format Patent
LanguageEnglish
French
Korean
Published 18.06.2015
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Summary:The method for performing, by a terminal, a random access procedure over a network in which a plurality of communication systems interwork, according to the present invention, may comprise the steps of: forming an association with an access point (AP) of an adjacent wireless local area network (WLAN) communication system if it is recognized that a direct uplink transmission to a cellular communication system of the plurality of communication systems is not possible, or that the terminal is located in an area where direct uplink transmission is not possible; transmitting, to the AP, a first message including a random access preamble sequence; receiving a second message from a base station of the cellular communication system as a response to the first message; transmitting, to the AP, a third message including the received second message and a radio resource control (RRC) connection request; and receiving, from the base station, a fourth message related to an RRC connection setup as a response to the third message. L'invention concerne un procédé permettant à un terminal d'exécuter une procédure d'accès aléatoire sur un réseau dans lequel plusieurs systèmes de communication interagissent, le procédé pouvant comprendre les étapes suivantes : formation d'une association avec un point d'accès (AP) d'un système de communication de réseau local sans fil (WLAN) adjacent s'il est constaté qu'une transmission de liaison montante directe vers un système de communication cellulaire de la pluralité de systèmes de communication n'est pas possible, ou que le terminal se trouve dans une zone dans laquelle une transmission de liaison montante directe n'est pas possible ; transmission à l'AP d'un premier message contenant une séquence de préambule d'accès aléatoire ; réception d'un deuxième message provenant d'une station de base du système de communication cellulaire en réponse au premier message ; transmission à l'AP d'un troisième message contenant le deuxième message reçu et une demande de connexion de contrôle des ressources radio (RRC) ; et réception d'un quatrième message provenant de la station de base concernant la configuration d'une connexion RRC, en réponse au troisième message. 본 발명에 따른 복수의 통신시스템이 연동하는(interworking) 네트워크에서 단말이 랜덤 액세스 프로시저를 수행하는 방법은, 상기 복수의 통신시스템 중 셀룰러 통신 시스템으로의 다이렉트 상향링크 전송이 불가하거나 상기 다이렉트 상향링크 전송이 불가한 지역에 위치하고 있음을 인지한 경우에, 인접한 무선랜 통신 시스템의 AP(Access Point)와 연관(association)을 형성하는 단계; 상기 AP로 랜덤 액세스 프리앰블 시퀀스를 포함하는 제 1 메시지를 전송하는 단계; 상기 제 1 메시지에 대한 응답으로서 상기 셀룰러 통신 시스템의 기지국으로부터 제 2 메시지를 수신하는 단계; 상기 수신한 제 2 메시지 및 RRC (Radio Resource Control) 연결 요청을 포함하는 제 3 메시지를 상기 AP로 전송하는 단계; 및 상기 3 메시지에 대한 응답으로서 상기 기지국으로부터 RRC 연결 셋업과 관련된 제 4 메시지를 수신하는 단계를 포함할 수 있다.
Bibliography:Application Number: WO2014KR12198