Patent ID: 7774004

Claim:
A network system for implementing paging control, comprising: a control apparatus configured to receive, from a mobile terminal, a paging area formation request packet instructing the control apparatus to form a paging area, to form the paging area based on the paging area formation request packet, and to instruct a plurality of router devices, identified by the paging area formation request packet as being in the paging area, to transmit a paging notification packet within the paging area of the mobile terminal upon receiving a packet destined for the mobile terminal, wherein the control apparatus is configured to transmit the paging notification packet to the plurality of router devices forming the paging area, upon receipt of the paging notification packet, each of the plurality of router devices is configured to transmit the paging notification packet to a plurality of devices, including a plurality of access points, by multicasting, upon receipt of the paging notification packet, each of the plurality of access points is configured to transmit the paging notification packet to the mobile terminal through a link connection by multicasting, when it is judged that an IP address in the paging notification packet is a predetermined IP address, the mobile terminal, upon receiving the paging notification packet, transmits a paging notification acknowledgment packet to the control apparatus, and the control apparatus transfers the packet to the mobile terminal based on location information included in the paging notification acknowledgment packet.