Patent ID: 6801508
Filing Date: 2004-10-05
Classification: H04L,H04W

Abstract:
An asynchronous transfer mode (ATM) network, comprising:a plurality of radio network controllers, each of said plurality of radio network controllers for performing a channel assignment function based on a service option of a source mobile station to separate packet data and circuit data service paths from each other upon interfacing with a core network; a mobile packet router coupled in common to each of said radio network controllers for routing packet data or packet sessions from said radio network controllers to established transfer paths, respectively; and a plurality of packet data nodes coupled in common to said mobile packet router, each of said packet data nodes routing a corresponding one of said packet data or packet sessions routed by said mobile packet router according to a destination identifier, wherein a virtual circuit is established between one of 1) a serving one of said radio network controllers and a target one of said radio network controllers and 2) the serving radio network controller and a target one of said packet data nodes, and wherein data blocks of said packet data or packet sessions are multiplexed/demultiplexed over said virtual circuit and transferred respectively to prescribed destinations via said mobile packet router, said serving radio network controller and one of a) said target radio network controller and b) said target packet data node being packet connection modes, wherein each of said data blocks comprises a header which includes: a source identifier field, to identify a multiplexing source of said virtual circuit; a destination identifier field, to identify a demultiplexing destination of said virtual circuit; a service option field, to indicate a service type of a packet call from said source mobile station, said serving option field being used when said cellular asynchronous transfer mode packet network sets up a radio terminal connection; a packet session identifier field, to identify a packet session with the same service option and a unique packet session identifier; and a payload packet identifier field, to identify a received upper layer protocol identifier.