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    • 1. 发明申请
    • Method and arrangement for synchronization
    • 同步方法和布置
    • US20080101514A1
    • 2008-05-01
    • US11907810
    • 2007-10-17
    • Mikko LaulainenKenneth HannJorma Kausiala
    • Mikko LaulainenKenneth HannJorma Kausiala
    • H04L7/00
    • H04J3/0661H04J3/065H04J3/0667
    • The invention relates to a method and an arrangement for transferring timing messages in a digital data transfer system. In a solution according to the invention a timing message is transferred (101, 102, 103) within control data carried in a protocol data unit. The timing message is dependent on a transmission moment of the protocol data unit from a network element of the digital data transfer system. The control data is either a synchronization status message (Ethernet-SSM) carried in an Ethernet-frame, an overhead (OH) of a Synchronous Optical Network-frame (SONET), or an overhead (OH) of a Synchronous Digital Hierarchy-frame (SDH). Therefore, the number of such protocol data units that are dedicated only for timing purposes can be reduced.
    • 本发明涉及用于在数字数据传输系统中传送定时消息的方法和装置。 在根据本发明的解决方案中,在协议数据单元中携带的控制数据内传送定时消息(101,102,103)。 定时消息取决于来自数字数据传输系统的网络元件的协议数据单元的传输时刻。 控制数据是以太网帧中承载的同步状态消息(Ethernet-SSM),同步光网络帧(SONET)的开销(OH)或同步数字体系框架的开销(OH) (SDH)。 因此,可以减少专用于定时目的的协议数据单元的数量。
    • 3. 发明申请
    • Method and arrangement for transmitting time stamp information
    • 发送时间戳信息的方法和装置
    • US20080259967A1
    • 2008-10-23
    • US11905534
    • 2007-10-02
    • Mikko LaulainenKenneth HannJorma Kausiala
    • Mikko LaulainenKenneth HannJorma Kausiala
    • H04J3/06
    • H04J3/0664H04J3/0697H04J3/247H04L69/28
    • The invention relates to transmitting time information between elements of a data network. In the present invention, it has surprisingly been discovered that in a network transmitting packet, frame or cell switched data traffic, time stamp information can be transmitted from a network element (101) to another network element (102) by using that part (113a, 113c) of the bit stream (111b) to be transmitted which is connected, in the transmitting network element (101), to the transmitted bit stream in a location that is placed, in the flowing direction of the transmitted bit stream, after a transmission buffer (103) buffering data packets, frames or cells. In an arrangement according to the invention, the random-type share of the transmission delay experienced by the time stamp information is slight, because the time stamp information does not have to queue in the transmission buffer (103) buffering data packets, frames or cells.
    • 本发明涉及在数据网络的元件之间传送时间信息。 在本发明中,惊奇地发现,在网络发送分组,帧或小区交换数据业务中,时间戳信息可以通过使用该部分(113)从网元(101)发送到另一网元 在发送网络元件(101)中连接的要发送的比特流(111b)的一个113C(c))被发送到在发送的比特流的流动方向上被放置的位置中的所发送的比特流 在传输缓冲器(103)缓冲数据分组,帧或小区之后。 在根据本发明的布置中,时间戳信息所经历的传输延迟的随机类型共享是轻微的,因为时间戳信息不必在缓冲数据分组,帧或小区的传输缓冲器(103)中排队 。