公开(公告)号：EP2053761B1

公开(公告)日：2010-08-11

申请号：EP07291285.0

申请日：2007-10-22

Applicant: Alcatel Lucent

Inventor： Fahldieck, Torsten, Dipl.-Ing.

IPC: H04W56/00 ,  H04B7/26 ,  H04J3/06

CPC classification number: H04W56/0045 ,  H04B7/022 ,  H04B7/2693 ,  H04J3/0664 ,  H04J3/067 ,  H04J3/0673 ,  H04L7/0041 ,  H04W48/16 ,  H04W72/005 ,  H04W72/1205 ,  H04W88/08 ,  H04W92/045

公开(公告)号：EP2053761A1

公开(公告)日：2009-04-29

申请号：EP07291285.0

申请日：2007-10-22

Applicant: Alcatel Lucent

Inventor： Fahldieck, Torsten, Dipl.-Ing.

IPC: H04B7/26

CPC classification number: H04W56/0045 ,  H04B7/022 ,  H04B7/2693 ,  H04J3/0664 ,  H04J3/067 ,  H04J3/0673 ,  H04L7/0041 ,  H04W48/16 ,  H04W72/005 ,  H04W72/1205 ,  H04W88/08 ,  H04W92/045

Abstract: The present invention provides a method of synchronizing a multicast and broadcast service packet flow on a wireless wideband system, comprising a core network coupled to a gateway, an MBS server coupled to said gateway and a plurality of base stations belonging to an MBS zone. The method comprises the steps of: receiving at least a first MBS packet belonging to the MBS packet flow for transmission to the MBS zone from the core network by the gateway; receiving at least a first sync packet containing a first time stamp by the gateway from the MBS server, the first time stamp being a summation of the time reference and a time offset, the time offset being a maximum delay between the MBS server and the first base station of the plurality of base stations, the first time stamp determining the first MBS packet transmission time; and sending at least the first MBS packet and at least the first sync packet to the plurality of base stations including the first base station by the gateway. The method further comprises comparing at least the first MBS packet transmission time with a plurality of predetermined transmission times of a plurality of downlink frames including a first predetermined transmission time of a first DL frame for identification of a matching between one of the predetermined transmission times of the plurality of downlink frames and the first MBS packet transmission time, by at least the first base station; allocating at least a portion of the first MBS packet into a first downlink frame having the first predetermined transmission time matching the first MBS packet transmission time, by at least the first base station.

Abstract translation: 本发明提供了一种在无线宽带系统上同步多播和广播服务分组流的方法，包括耦合到网关的核心网络，耦合到所述网关的MBS服务器和属于MBS区域的多个基站。 所述方法包括以下步骤：至少接收属于所述MBS分组流的第一MBS分组，以由所述网关从所述核心网传输到所述MBS区域; 从所述MBS服务器接收由所述网关至少包含第一时间戳的第一同步分组，所述第一时间戳是所述时间基准和时间偏移的和，所述时间偏移量是所述MBS服务器与所述第一时间戳之间的最大延迟 多个基站的基站，第一时间戳确定第一MBS分组传输时间; 以及至少将所述第一MBS分组和所述第一同步分组发送到由所述网关包括所述第一基站的所述多个基站。 该方法还包括将至少第一MBS分组传输时间与多个下行链路帧的多个预定传输时间进行比较，包括第一DL帧的第一预定传输时间，用于识别预定传输时间之一 所述多个下行链路帧和所述第一MBS分组传输时间至少由所述第一基站发送; 至少第一基站将第一MBS分组的至少一部分分配到具有与第一MBS分组传输时间相匹配的第一预定传输时间的第一下行链路帧。