METHOD FOR INTERRUPTING REMAINING TCP CONNECTION

摘要

PROBLEM TO BE SOLVED: To relieve a load of an exchange for mobile terminals when an IP address of a mobile terminal is changed attended with its movement by generating a TCP segment to interrupt a TCP connection for a received packet and transmitting the TCP segment to an IP network in the case that a destination address of the received packet is not assigned and contents of its data part point out TCP segment. SOLUTION: In the case that no destination address is assigned to a packet received from an IP network and contents of a data part of the packet point out a TCP segment, a TCP segment to interrupt a TCP connection pointed out by the TCP segment of the contents of the data part is generated and transmitted to the IP network. A packet exchange PDSN 105 is provided with containing channel I/Fs 201a-201c to contain BSC and a network I/F 202 to control a network channel to a PDGN and also with a packet buffer 203 to temporarily store packets received from each channel, a CPU 204 and a memory 205 or the like.