US 6,958,988 B1 · Mobile communication network and data delivery method in mobile communications network

Abstract

A mobile communications network and data delivery method in a mobile communications network is provided that can implement connectionless transfer in the mobile communications network, and obviate the need for sending a call control signal for data delivery. An IP address is assigned to each of the nodes of the mobile communications network including routing nodes (a gate node and repeater node, for example) and edge nodes and to each mobile station. A routing node, receiving data including the IP address of a mobile station, carries out routing of the data in accordance with routing information. The edge node that receives the data routed by the routing node, transmits the data to the mobile station corresponding to the IP address of the mobile station added to the data. The IP addresses are also applicable to delivering data to users of the same group, or carrying out control like handover.

Claims22

Dependent claims

A mobile communications network comprising:

one or more routing nodes for receiving data to which the IP address of a mobile station is added, and for carrying out routing of the data in accordance with routing information;
and
one or more edge nodes for receiving the data routed by said routing nodes, and for transmitting the data to the mobile station corresponding to the IP address of the mobile station added to the data, wherein said mobile communications network further comprises:
a location information server for managing information about correspondence between the IP address of the mobile station and the IP address of the edge node that supervises an area visited by the mobile station, wherein
said routing nodes include a gate node;
said gate node retrieves, by accessing said location information server, the IP address of the edge node supervising the area visited by the mobile station corresponding to the IP address of the mobile station added to the received data, and adds the IP address of the edge node to the received data;
said routing information includes information about correspondence between the IP address of the edge node and a transmission route;
and
said routing nodes carry out the routing of the received data in accordance with the IP address of the edge node added to the received data and the routing information,
wherein the IP address of a group of mobile stations can be added as the IP address of the mobile station to be added to the data, wherein
said location information server manages information about correspondence between the IP addresses of the mobile stations belonging to the group and the IP address of the group of the mobile stations;
said gate node retrieves, when the IP address of the group of the mobile stations is added to the received data, the IP addresses of the edge nodes supervising the areas visited by the mobile stations corresponding to the IP address of the group of the mobile stations by accessing said location information server, replicates the received data by the number of the edge nodes, adds to each of the data the IP address of each of the edge nodes and the IP addresses of the mobile stations visiting the supervisory area of the edge node, and carries out the routing of the data.

9 more elements

A mobile communications network comprising:

one or more routing nodes for receiving data to which the IP address of a mobile station is added, and for carrying out routing of the data in accordance with routing information;
and
one or more edge nodes for receiving the data routed by said routing nodes, and for transmitting the data to the mobile station corresponding to the IP address of the mobile station added to the data,
wherein said mobile communications network further comprises:
a location information server for managing information about correspondence between the IP address of the mobile station and the IP address of the edge node that supervises an area visited by the mobile station, wherein
each of said edge nodes receives data which is transmitted by a mobile station visiting its own supervisory area and to which the IP address of the mobile station is added, retrieves by accessing said location information server the IP address of the edge node supervising the area visited by the mobile station corresponding to the IP address of the mobile station added to the received data, adds the IP address of the edge node to the received data, and transmits the data to said routing node;
said routing information includes information about correspondence between the IP address of the edge node and a transmission route;
and
said routing nodes carry out the routing of the received data in accordance with the IP address of the edge node added to the received data and the routing information.

6 more elements

A data delivery method in a mobile communications network including one or more routing nodes and one or more edge nodes, said data delivery method comprising the steps of:

receiving, at said routing nodes, data to which the IP address of a mobile station is added, and carrying out routing of the data in accordance with routing information;
and
receiving, at said edge nodes, the data routed by said routing nodes, and transmitting the data to the mobile station corresponding to the IP address of the mobile station added to the data,
wherein said mobile communications network further includes:
a location information server for managing information about correspondence between the IP address of the mobile station and the IP address of the edge node that supervises an area visited by the mobile station, wherein
said routing nodes include a gate node;
said gate node retrieves, by accessing said location information server, the IP address of the edge node supervising the area visited by the mobile station corresponding to the IP address of the mobile station added to the received data, and adds the IP address of the edge node to the received data;
said routing information includes information about correspondence between the IP address of the edge node and a transmission route;
and
said routing nodes carry out the routing of the received data in accordance with the IP address of the edge node added to the received data and the routing information,
wherein the IP address of a group of mobile stations can be added as the IP address of the mobile station to be added to the data, wherein
said location information server manages information about correspondence between the IP addresses of the mobile stations belonging to the group and the IP address of the group of the mobile stations;
said gate node retrieves, when the IP address of the group of the mobile stations is added to the received data, the IP addresses of the edge nodes supervising the areas visited by the mobile stations corresponding to the IP address of the group of the mobile stations by accessing said location information server, replicates the received data by the number of the edge nodes, adds to each of the data the IP address of each of the edge nodes and the IP addresses of the mobile stations visiting the supervisory area of the edge node, and carries out the routing of the data.

10 more elements

Dependencies are inferred from the claim text.

Mobile communication network and data delivery method in mobile communications network

Life of this patent

Mobile communication network and data delivery method in mobile communications network

Life of this patent

Abstract

Claims22