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    • 10. 发明申请
    • SELECTIVE PACKET FORWARDING FOR LTE MOBILITY
    • 用于LTE移动的选择性分组
    • WO2008115125A3
    • 2008-11-13
    • PCT/SE2008050167
    • 2008-02-13
    • ERICSSON TELEFON AB L MPELLETIER GHYSLAINSAAGFORS MATSTORSNER JOHAN
    • PELLETIER GHYSLAINSAAGFORS MATSTORSNER JOHAN
    • H04L29/06H04W48/00H04W80/04
    • H04L69/04H04L69/22H04W48/17H04W80/04
    • Methods and devices are disclosed for forwarding data packets during handover in a packet-switched wireless communications system, such as a 3GPP Long-Term Evolution/System Architecture Evolution system. In an exemplary method, a source base station node (410, 900) determines (520) that handover of at least one radio bearer for a served user terminal (160) to a target base station node (430, 900) is imminent. The source base station node (410, 900) classifies (530) a plurality of data packets into two or more data flow classifications according to a transmission status for each data packet, a service requirement for each data packet, or both and selectively forwards (540) one or more of the data packets to the target base station node (430, 900) based on the data flow classification for each data packet. In some embodiments, the source base station node (410, 900) classifies (530) the data packets by inspecting (610) an Internet Protocol header for each packet to determine a corresponding service requirement. In some embodiments, the source base station node (410, 900) classifies (530) data packets by evaluating (650) a radio link control status to determine a transmission status for each data packet. In either case the source base station node (410, 900) selectively forwards (540) data packets corresponding to one or more of the classifications. For example, data packets associated with a reliable delivery service requirement may be forwarded while data packets associated with a maximum delay service requirement are not.
    • 公开了用于在诸如3GPP长期演进/系统架构演进系统的分组交换无线通信系统中在切换期间转发数据分组的方法和设备。 在一个示例性方法中,源基站节点(410,900)确定(520)即将迫在眉睫,将目的地基站节点(430,900)的至少一个无线电承载用于服务用户终端(160)的切换。 源基站节点(410,900)根据每个数据分组的传输状态,每个数据分组的服务需求或两者选择性地转发(530)多个数据分组到两个或更多个数据流分类中 540)基于每个数据分组的数据流分类到目标基站节点(430,900)的一个或多个数据分组。 在一些实施例中,源基站节点(410,900)通过检查(610)每个分组的因特网协议报头来确定相应的服务需求来对(530)数据分组进行分类(530)。 在一些实施例中,源基站节点(410,900)通过评估(650)无线电链路控制状态来确定每个数据分组的传输状态来对(530)数据分组进行分类。 在任一情况下,源基站节点(410,900)选择性地转发(540)对应于一个或多个分类的数据分组。 例如,与可靠的传送服务需求相关联的数据分组可以被转发,而与最大延迟服务需求相关联的数据分组不是。