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    • 65. 发明授权
    • Mobile telecommunication
    • 移动电信
    • US07881204B2
    • 2011-02-01
    • US11579790
    • 2004-05-07
    • Johan Torsner
    • Johan Torsner
    • H04L1/00H04L12/28H04L12/56
    • H04L1/1832H04L1/187H04W76/10
    • A node implementing an RLC (Radio Link Control) entity and being for use in a mobile communications system transmits a sequence of RLC SDUs (SDU=Service Data Unit) towards a peer node. As a result of re-establishment of an RLC entity not all SDUs may have been received. The peer notifies the node which is the next SDU that the peer expects to receive (by transmitting the next SDU number to the node). The node resumes transmission from that SDU onwards. This may or may not lead to re-transmission of SDUs transmitted before the RLC re-establishment. As an alternative, the peer does not notify the node of the next SDU that it expects to receive, but instead the node re-transmits any unacknowledged SDUs, together with the SDU number of the first re-transmitted SDU. The peer then discards any duplicate SDUs. Both variants enable lossless data transfer whilst avoiding duplication.
    • 实现RLC(无线电链路控制)实体并且用于移动通信系统的节点向对等节点发送RLC SDU序列(SDU =服务数据单元)。 作为重新建立RLC实体的结果,不是所有的SDU可能已被接收。 对等体通知节点,它是对等体期望接收的下一个SDU(通过向节点发送下一个SDU号码)。 该节点从该SDU向后恢复传输。 这可能导致或可能不导致RLC重新建立之前传输的SDU的重传。 作为替代,对等体不通知其期望接收的下一个SDU的节点,而是节点重新发送任何未确认的SDU以及第一重新发送的SDU的SDU号码。 对等体然后丢弃任何重复的SDU。 这两种变体均可实现无损数据传输,同时避免重复。