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    • 83. 发明授权
    • Subnetwork layer for a multimedia mobile network
    • 多媒体移动网络的子网层
    • US07502361B2
    • 2009-03-10
    • US10345034
    • 2003-01-15
    • Walid AhmedBharat Tarachand DoshiSubrahmanyam DravidaHong JiangKiran M. Rege
    • Walid AhmedBharat Tarachand DoshiSubrahmanyam DravidaHong JiangKiran M. Rege
    • H04J3/24
    • H04L29/12311H04L1/1664H04L1/1812H04L61/2084H04L67/322H04L69/324H04L69/325H04L69/329H04L69/40H04W74/00H04W80/00
    • A new protocol layer is provided as part of a protocol stack associated with a packet-based multiaccess mobile communications system. The protocol layer is preferably located above a medium access control (MAC) protocol layer and a physical protocol layer of the system and below a transport/network protocol layer. Such a subnetwork protocol layer provides, inter alia, the communications system with various mobility management functions, for example, tracking mobile user stations throughout the system, mobile station access to the system, and connection/call continuity within the system. The subnetwork protocol layer of the invention also performs packet routing functions associated with the system. Routing can be accomplished in many ways, for example, via source routing, connectionless routing, or tunneling. Further, the new protocol layer of the invention is preferably located above a data link layer with respect to the protocol stack associated with communications between network nodes.
    • 作为与基于分组的多访问移动通信系统相关联的协议栈的一部分提供了新的协议层。 协议层优选地位于媒体访问控制(MAC)协议层和系统的物理协议层之上,并位于传输/网络协议层之下。 这样的子网协议层尤其提供具有各种移动性管理功能的通信系统,例如,跟踪整个系统中的移动用户站,移动台对系统的访问以及系统内的连接/呼叫连续性。 本发明的子网协议层还执行与系统相关联的分组路由功能。 可以通过许多方式实现路由,例如,通过源路由,无连接路由或隧道。 此外,本发明的新协议层优选地相对于与网络节点之间的通信相关联的协议栈位于数据链路层之上。