Cisco Technology, Inc.

Cheng-Lee Nee

Qingming Ma

Gopal K Dommety

Hancang Wang

Sudhakar R Padala

Perng-Hwa A Wu

Amar Chand Amar

Chongzhen Wang

Minglei Yang

Anthony Wu

Quingming Ma

Winston Yuan

A data communication system is provided that allows for the efficient management of data communication sessions requested from a plurality of packet data servicing nodes organized in a cluster, each member of the cluster managing a cluster session table which contains data identifying mobile units and packet data servicing nodes which are servicing data sessions with the mobile unit. As a mobile unit moves from one portion of the system to another, a network element will request a data session from a packet data servicing node, the packet data servicing node is then able to access the cluster session table to determine if the data session is already being served by another member of the cluster. If the data session is already in existence, the base station controller will be directed to request a data session from the packet data servicing node which is already servicing that session.

System and method for efficient selection of a packet data servicing node

A resource managerreceives and compiles data from a plurality of base transceiver stationto enable an admission control decision before beginning a communication session with a mobile unit. The historic usage patterns of the mobile unitand the historic and present bandwidth availability for cells likely to be impacted are taken into account to make the admission control decision.

System and method for performing admission control functions in a data network

A data communication systemis provided that allow for the efficient management of data communication sessions requested from a plurality of packet data servicing nodes () which are organized in a cluster, each member of the clustermanages a cluster session table which contains data identifying mobile unitsand packet data servicing nodes () which are servicing data sessions with the mobile unit. As a mobile unitmoves from one portion of the systemto another, a network element such as a base station controllerwill request a data session from a packet data servicing node, the packet data servicing nodeis then able to access the cluster session table to determine if the data session is already being served by another member of the cluster. If the data session is already in existence, the base station controllerwill be directed to request a data session from the packet data servicing nodewhich is already servicing that session. In this manner, the hand off of data communication sessions between packet data servicing nodes is reduced or eliminated.

A router in a network comprises an interface system for receiving packets and has a plurality of channels and a plurality of framing service engines. The router is configured to assign the channels to individual framing service engines for framing services. The router has a channel manager for performing the assignments, and the channel manager is configured to receive and use data about the framing service engines. The router further comprises a framing memory for buffering communication between the interface system and the plurality of framing service engines. At least one framing service engine is configured to frame packets and at least one framing service engine is configured to deframe packets, and the framing service engines may be configured to operate on AHDLC packets. The router can be used with an interface system that comprises a plurality of network interfaces terminating a plurality of point to point links.

Generalized asynchronous HDLC services

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San Jose, CA, United States of America

Cheng-Lee Nee