Patent ID: 8855123
Filing Date: 2014-10-07
Classification: H04L,H04M,H04W

Abstract:
1. A gateway apparatus that is configured to be arranged between a mobile circuit switching network and a packet communication network, said apparatus comprising: a conversion unit configured to perform mutual conversion between a circuit switching protocol and a packet communication protocol to execute voice communication, wherein said conversion unit is configured to exercise control such that at least one of a sequence number and a timestamp in a packet destined to a first terminal and for output to said packet communication network, is configured to be made to vary continuously before and after movement of said first terminal, in case said first terminal connected to said packet communication network or another network beyond said packet communication network, moves the first terminal's location, and a call control unit configured to receive information regarding a location of said first terminal and deciding whether or not an IP address of a packet of a corresponding channel transmitted from said gateway apparatus to said packet communication network changes due to movement of said first terminal, wherein said call control unit is further configured to output an instruction to change a destination IP address to said packetizing unit and to output a movement completion notification to said sequence number/timestamp changing unit, when an IP address of said packet of said corresponding channel changes, and said call control unit is further configured to output information on a call control signal received from said mobile circuit switching network and said packet communication network to a control and analysis unit of said conversion unit.