Paging method, mobile communication system, server, base station, mobile station, and paging program

A paging method in a mobile communication system including a plurality of base stations connected to IP network, a plurality of mobile stations locating in a cell formed by base station, and a server, connected to IP network, comprising a location information management table storing location information of mobile stations including a connection state, wherein a set of cells formed by base stations constitutes a paging area, and wherein said server manages information of a standby mobile station as location information of mobile stations about paging area in which mobile station locates;

• said method comprising:
• a transfer step in which a packet transmitted from a base station to mobile station is transferred to said server;
• a determination step in which said server receiving packet determines, according to location information management table, whether mobile station is in standby state or not;
• a generation step in which, if mobile station is in standby state, said server buffers said packet and generates paging control packets by the number of base stations corresponding to paging area related to mobile station;
• and
• a multicast step in which said server multicasts a plurality of generated paging control packets to base stations corresponding to paging area.

A mobile communication system including a plurality of base stations connected to IP network, a plurality of mobile stations locating in a cell formed by base station, and a server, connected to IP network, for managing location information of mobile stations including a connection state, wherein a set of cells formed by base stations constitutes a paging area;

• said base station comprising:
• transfer means for transferring to said server a packet transmitted to mobile station when base station becomes a sender;
• said server comprising:
• a location information management table storing information of a standby mobile station as location information of mobile stations about paging area in which said mobile station locates;
• determination means for determining whether mobile station is in standby state or not according to location information management table when packet is received;
• copy means for copying said packet by the number of base stations corresponding to paging area related to mobile station if mobile station is in standby state;
• and
• multicast means for multicasting said packets obtained by copying to said base stations corresponding to said paging area.

A mobile communication system including a plurality of base stations connected to IP network, a plurality of mobile stations locating in a cell formed by base station, and a server, connected to TP network, for managing location information of mobile stations including a connection state, wherein a set of cells formed by said base stations constitutes a paging area;

• said base station comprising:
• transfer means for transferring to said server a packet transmitted to mobile station when base station becomes a sender;
• said server comprising:
• a location information management table storing information of a standby mobile station as location information of mobile stations about paging area in which said mobile station locates;
• determination means for determining whether mobile station is in standby state or not according to location information management table when packet is received;
• generation means for buffering said packet and generating paging control packets by the number of base stations corresponding to paging area related to mobile station if said mobile station is in standby state;
• and
• multicast means for multicasting a plurality of generated paging control packets to base stations corresponding to paging area.

A server constituting a mobile communication system together with a plurality of base stations connected to IP network, and a plurality of mobile stations locating in a cell formed by base station;

• wherein, in mobile communication system, a set of cells formed by base stations constitutes a paging area;
• said server being connected to IP network and managing location information of mobile stations including a connection state;
• said server comprising:
• a location information management table storing information of a standby mobile station as location information of mobile stations about paging area in which said mobile station locates;
• determination means for determining whether mobile station is in standby state or not according to location information management table when a packet transmitted to said mobile station is received;
• copy means for copying said packet by the number of base stations corresponding to paging area related to said mobile station if mobile station is in standby state;
• and
• multicast means for multicasting said packets obtained by copying to said base stations corresponding to paging area.

A server constituting a mobile communication system together with a plurality of base stations connected to IP network, and a plurality of mobile stations locating in a cell formed by base station;

• wherein, in mobile communication system, a set of cells formed by base stations constitutes a paging area;
• said server being connected to IP network and managing location information of said mobile stations including a connection state;
• said server comprising:
• a location information management table storing information of a standby mobile station as location information of mobile stations about paging area in which said mobile station locates;
• determination means for determining whether mobile station is in standby state or not according to location information management table when a packet transmitted to mobile station is received;
• generation means for buffering said packet and generating paging control packets by the number of base stations corresponding to paging area related to mobile station if said mobile station is in standby state;
• and
• multicast means for multicasting a plurality of generated paging control packets to said base stations corresponding to paging area.

A base station constituting a mobile communication system together with a plurality of mobile stations locating in a cell formed by said base station, and a server, connected to IP network, for managing location information of mobile stations including a connection state;

• said base station being connected to IP network;
• a set of a cell formed by base station and cells formed by other base stations adjacent thereto constituting a paging area;
• said base station comprising:
• transfer means for transferring to said server a packet transmitted to mobile station when base station becomes a sender;
• a mobile station management table registering IP addresses of communicating mobile stations;
• registration determining means for determining whether mobile station is registered in mobile station management table or not if a packet or a paging control packet is received from said server;
• transmission means for transmitting a packet to mobile station by using a communication channel if said mobile station is registered in mobile station management table;
• paging means for paging standby mobile stations via a broadcasting control channel if mobile station is not registered in mobile station management table;
• and
• response time processing means for adding IP address of said mobile station to said mobile station management table and transmitting to said server a control signal indicating that mobile station locates in a cell of base station if mobile station responds to paging.

A mobile station constituting a mobile communication system together with a plurality of base stations connected to IP network, and a server, connected to IP network, form an aging location information of mobile station including a connection state;

• wherein, in mobile communication system, a set of cells formed by base stations constitutes a paging area;
• said mobile station locating in said cell formed by base station;
• said mobile station transiting between at least two states including a standby state for periodically receiving a packet transmitted from a base station and a communicating state of transmitting and receiving a packet
• said mobile station comprising:
• transit control means for controlling mobile station such that said mobile station transits to standby state when requested by a user or when no packet is transmitted and received for a predetermined period and that mobile station transits to communicating state when mobile station is paged by network or when mobile station transmits origination packet.

A paging program executed by a computer provided with a server constituting a mobile communication system together with a plurality of base stations connected to IP network, and a plurality of mobile stations locating in a cell formed by base station;

• wherein, in mobile communication system, a set of cells formed by base stations constitutes a paging area;
• said server being connected to IP network and comprising a location information management table storing information of a standby mobile station as location information of said mobile stations about paging area in which said mobile station locates;
• said program causing said computer to execute:
• a determination step of determining whether mobile station is in standby state or not according to location information management table when a packet transmitted to said mobile station is received;
• a copy step of copying said packet by the number of base stations corresponding to paging area related to mobile station if said mobile station is in standby state;
• and
• a multicast step of multicasting said packets obtained by copying to said base stations corresponding to paging area.

A paging program executed by a computer provided with a server constituting a mobile communication system together with a plurality of base stations connected to IP network, and a plurality of mobile stations locating in a cell formed by base station;

• wherein, in mobile communication system, a set of cells formed by base stations constitutes a paging area;
• said server being connected to IP network and comprising a location information management table storing information of a standby mobile station as location information of said mobile stations about paging area in which said mobile station locates;
• said program causing said computer to execute:
• a determination step of determining whether mobile station is in standby state or not according to location information management table when a packet transmitted to mobile station is received;
• a generation step of buffering said packet and generating paging control packets by the number of base stations corresponding to paging area related to said mobile station;
• and
• a multicast step of multicasting a plurality of generated paging control packets to base stations corresponding to paging area.