公开(公告)号：US20070099639A1

公开(公告)日：2007-05-03

申请号：US10596800

申请日：2004-12-14

申请人： Philippe Mege ,  Christophe Molko ,  Frederic Rosin

发明人： Philippe Mege ,  Christophe Molko ,  Frederic Rosin

IPC分类号： H04B7/00 ,  H04B15/00

CPC分类号： H04W56/0005 ,  H04W92/10

摘要： A method of synchronization on the uplink channel of a Simulcast network with a plurality of fixed receivers (BS1-BS4) and a selection unit (20), comprises the following steps. All the receivers are placed in a synchronization search mode (702), in which they search for a synchronization pattern sent by the mobile terminal over the uplink channel. When a receiver detects the synchronization pattern, it produces an initial synchronization context (SC3(0)), which indicates the delay of the radio signal relative to a time reference of the network, and transmits it (705) to the selection unit. The latter broadcasts it (707) to all the receivers that use it to start processing the radio signal. Then, each receiver maintains its synchronization context and transmits it (708-712) to the selection unit on each frame. At regular intervals, the value of an updated synchronization context (SC2(i)) is broadcast (714) to the receivers. Advantage: the synchronization of a receiver which begins to receive the radio signal during a call or alternate turn is facilitated.

摘要翻译： 具有多个固定接收机（BS 1 -BS 4）和选择单元（20）的Simulcast网络的上行链路信道上的同步方法包括以下步骤。 所有的接收机被放置在同步搜索模式（702）中，其中它们通过上行链路信道搜索由移动终端发送的同步模式。 当接收机检测到同步模式时，它产生初始同步上下文（SC 3（0）），其指示无线电信号相对于网络的时间参考的延迟，并将其发送（705）到选择单元。 后者向所有使用它的接收机广播（707）开始处理无线电信号。 然后，每个接收机保持其同步上下文，并将其（708- 712）发送到每个帧上的选择单元。 以规则的间隔，将更新的同步上下文（SC 2（i））的值广播（714）给接收机。 优点：便于在呼叫或交替转弯期间开始接收无线电信号的接收机的同步。