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    • 36. 发明申请
    • Frame synchronisation in a radio access network
    • 无线接入网络中的帧同步
    • US20070053339A1
    • 2007-03-08
    • US10578893
    • 2003-11-24
    • Janne PeisaMats Sagfors
    • Janne PeisaMats Sagfors
    • H04J3/06
    • H04B7/2693
    • A method of optimizing the timing offsets with which data frames are transmitted over the Iur/Iub interfaces of a UMTS Terrestrial Radio Access Network, UTRAN. The method comprises, for a given Iur/Iub interface or set of Iur/Iub interfaces over which identical user plane data is to be sent, defining a duration of a data frame receiving window for use by the receiving node(s), transmitting data frames from a sending node with an initial timing offset sufficient to ensure a likelihood that the frames will be received at the or each receiving node within the defined receiving window, reducing the timing offset at the sending node in a stepwise manner, and adjusting the timing offset at the sending node in response to the receipt of late Time of Arrival error reports at the sending node. In a second embodiment, the frame synchronisation of frames corresponding to speech services and data services is carried out by delaying the frames corresponding to speech services a fixed delay and the frames corresponding to data services a variable delay based on a received time of arrival feedback.
    • 一种优化通过UMTS陆地无线电接入网络UTRAN的Iur / Iub接口传送数据帧的定时偏移的方法。 该方法包括对于给定的Iur / Iub接口或Iur / Iub接口的集合,在其上将要发送相同的用户平面数据,定义由接收节点使用的数据帧接收窗口的持续时间,传送数据 来自具有初始定时偏移的发送节点的帧足以确保帧将在所定义的接收窗口内的每个接收节点处被接收的可能性,以逐步的方式减少发送节点处的定时偏移,并且调整定时 响应于在发送节点接收到延迟的到达时间错误报告,在发送节点处偏移。 在第二实施例中,通过将对应于语音服务的帧延迟固定的延迟和对应于数据业务的帧,基于接收的到达时间反馈的可变延迟来执行对应于语音业务和数据业务的帧的帧同步。
    • 38. 发明授权
    • Avoiding stall conditions and sequence number ambiguity in an automatic repeat request protocol
    • 在自动重复请求协议中避免停顿条件和序列号模糊
    • US07187677B2
    • 2007-03-06
    • US10152986
    • 2002-05-23
    • Per Johan TorsnerJanne Peisa
    • Per Johan TorsnerJanne Peisa
    • H04L12/56
    • H04L1/1848H04L1/1819H04L1/1832H04L1/187
    • The present invention provides a stall avoidance mechanism that may be used alone or in conjunction with an ambiguity avoidance mechanism in an ARQ protocol. Both mechanisms decrease data delays and increase data throughput rates. Stall avoidance is accomplished by determining whether a stall condition exists with respect to receiving a missing data unit. In one example, only a single timer is needed to avoid stalls. Retransmission ambiguities may be avoided using a retransmission window in the transmitter and/or a receive window in the receiver. Although each mechanism may be used independently of the other, a preferred example embodiment uses a stall avoidance timer, a retransmission window in the transmitter, and a receive window in the receiver.
    • 本发明提供了可以单独使用或与ARQ协议中的模糊度回避机制结合使用的失速回避机制。 这两种机制都可以减少数据延迟并提高数据吞吐率。 通过确定关于接收丢失的数据单元是否存在失速条件来实现失速回避。 在一个示例中,仅需要一个定时器来避免停顿。 可以使用发射机中的重传窗口和/或接收机中的接收窗口来避免重传模糊。 虽然每个机制可以独立于另一个使用,但是优选示例性实施例使用失速避免定时器,发送器中的重传窗口和接收器中的接收窗口。