COMMUNICATION SYSTEM, DETERMINING METHOD FOR ALTERNATIVE ROUTE OF THE SYSTEM, AND RECORDING MEDIUM FOR RECORDING DETERMINING PROGRAM OF THE ALTERNATIVE ROUTE

Japanese Patent JP3656245

B2

PROBLEM TO BE SOLVED: To provide a communication system for setting and updating proper alternative routes in the standard network system of a 3rd GPP and for eliminating effectively generations of the congestions, to provide a determining method for the alternative routes, and to provide a recording medium for recording therein the determining program of the alternative routes.
SOLUTION: In the communication system, a connection managing node for monitoring traffics on a communication network and for controlling its communication routes has a traffic-information monitoring means and has a means for communicating traffic-informations to the external. Also, each SGSN for relaying informations between each GGSN of an external gateway and each user terminal has a means for monitoring cost-metric informations in a public land mobile network and has a cost-metric-information communicating means for notifying cost-metric-information tables to external nodes. Further, each user terminal has an information-table receiving means for acquiring therefrom the informations of the notified states of the communication network from external nodes and has a communication-route controlling means for deciding optimum communication routes based on the acquired informations and for connecting each user terminal with the optimum communication routes.

Fujino Shozo

JP2000375415A

June 08, 2005

December 11, 2000

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NEC

H04L12/66; H04L45/24; H04L45/42; H04W28/08; H04W36/12; H04W36/36; H04W40/02; H04W40/36; H04W80/04; (IPC1-7): H04L12/56; H04L12/66; H04Q7/22; H04Q7/24; H04Q7/26; H04Q7/30

JP2000201172A
JP1049456A
JP2000049858A

Masao Matsumoto

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