Mobile communication system, mobile communication method, wireless base station, mobile station, and program

A mobile communication method in a mobile communication system in a mobile communication system comprising a wireless base station and a mobile station which are adaptable to a network control protocol operating on the Internet, said method comprising:

• an adding step in which said mobile station adds ID information for indicating that broadcasting or multicasting should be carried out to control information of a packet to be transmitted to said wireless base station;
• a transmitting step in which said mobile station wirelessly transmits said packet in which said ID information is added to said control information in said adding step to said wireless station;
• a receiving step in which said wireless base station receives said packet from said mobile station;
• a first determining step in which said wireless base station determines whether or not said packet received in said receiving step is one to be broadcast or multicast according to said ID information added to said control information of said packet;
• a copying step in which said wireless base station copies said packet according to a subnet to be transmitted when said packet is determined in said first determining step to be one to be broadcast or multicast;
• and
• a wide-area transmitting step in which said wireless base station wirelessly broadcasts or multicasts said packet to a mobile station within a cell of a wireless base station corresponding to said subnet.

A wireless base station, adaptable to a network control protocol operating on the Internet, constituting a mobile communication system together with a mobile station, said wireless base station comprising:

• first determining means for determining, according to ID information added to control information of a packet from said mobile station, whether or not said packet is one to be broadcast or multicast;
• copying means for copying said packet according to a subnet to be transmitted when said packet is determined by said first determining means to be one to be broadcast or multicast;
• and
• base station transmitting/receiving means for wirelessly broadcasting or multicasting said packet to a mobile station within a cell of a wireless base station corresponding to said subnet.

A mobile communication method in which a wireless base station, adaptable to a network control protocol operating on the Internet, constituting a mobile communication system together with a mobile station communicates with said mobile station, said method comprising:

• a first determining step in which said wireless base station determines, according to ID information added to control information of a packet from said mobile station, whether or not said packet is one to be broadcast or multicast;
• a copying step in which said wireless base station copies said packet according to a subnet to be transmitted when said packet is determined in said first determining step to be one to be broadcast or multicast;
• and
• a base station transmitting/receiving step in which said wireless base station wirelessly broadcasts or multicasts said packet to a mobile station within a cell of a wireless base station corresponding to said subnet.

A program for causing a computer controlling a wireless base station, adaptable to a network control protocol operating on the Internet, constituting a communication system together with a mobile station to realize:

• a first determining function of determining, according to ID information added to control information of a packet from said mobile station, whether or not said packet is one to be broadcast or multicast;
• a copying function of copying said packet according to a subnet to be transmitted when said packet is determined by said first determining function to be one to be broadcast or multicast;
• and
• a base station transmitting/receiving function of wirelessly broadcasting or multicasting said packet to a mobile station within a cell of a wireless base station corresponding to said subnet.