Data relay apparatus for transferring data to a mobile terminal via a plurality of base stations

A data relay apparatus in a communication system for transferring data from the data relay apparatus to a mobile terminal through a plurality of base stations, while adding a sequence number to the data to be transferred to the mobile terminal, the data relay apparatus comprising:

• a processor which performs processing, when transferring a first data and second data received from a network and addressed to the mobile terminal through different base stations among the plurality of base stations, to transfer the first data received before the second data to one base station in the plurality of base stations which are held in a connection state with the mobile terminal simultaneously, and add information relating to reception order of the first and second data to the second data and transfer the second data with the information to another base station in the plurality of base stations;
• said information relating to the reception order of said first and second data is an offset value which corresponds to an amount of the first data;
• and
• said processor adds the offset value to said second data and transfers the second data and the added offset value to said another base station.

A base station in a communication system for transferring data from a data relay apparatus to a mobile terminal while adding, at a plurality of base stations, a sequence number to the data to be transferred to the mobile terminal, the base stations comprising:

• a processor which adds, in accordance with information relating to a reception order of a first data and second data, addressed to the mobile terminal, which are sent from a network and received at the data relay apparatus, a sequence number to the second data sent from the data relay apparatus and received at a second base station of said plurality of base stations after the reception of the first data at a first base station of said plurality of base stations and transmits the second data with the sequence number to the mobile terminal, the processor is included in each of the plurality of base stations which are held in a connection state with the mobile terminal simultaneously;
• said information relating to the reception order of said first and second data is an offset value which corresponds to an amount of the first data;
• and
• a processor of said data relay apparatus adds the offset value to said second data and transfers the second data and the added offset value to another base station among the plurality of base stations.

A mobile communication system for transferring data from a data relay apparatus to a mobile terminal while adding, at a plurality of base stations, sequence number to the data to be transferred to the mobile terminal, the mobile terminal comprising:

• a receiving unit which receives, one of a first data and a second data sent from a network and received at the data relay apparatus, the first data to which a sequence number is added by one base station of the plurality of base stations and receives the second data to which a sequence number is added by another base station of the plurality of base stations, where the one base station and the other base station are held in a connection state with the mobile terminal simultaneously;
• and
• a processor which corrects, in accordance with the sequence numbers added to the first and second data respectively, an order of the first and second data received, wherein
• the first data is a data, addressed to the mobile terminal, which is received at the data relay apparatus from the network before the reception of the second data at the data relay apparatus;
• and
• the sequence number added to the second data is a sequence number which is determined in accordance with information relating to reception order of the first data and second data received at the data relay apparatus;
• said information relating to the reception order of said first and second data is an offset value which corresponds to an amount of the first data;
• and
• a processor of said data relay apparatus adds the offset value to said second data and transfers the second data and the added offset value to said another base station.

A method of transmitting data to a mobile terminal with a sequence number added to the data at a plurality of base stations when the data is transferred from a data relay apparatus to the mobile terminal through the plurality of base stations, the method comprising:

• in the data relay apparatus,
• transferring, when transferring a first data and second data, addressed to the mobile station, through different base stations, among the plurality of base stations, respectively, the first data, received before the second data, at one base station and transferring the second data, to which information relating to the reception order of the first data and second data is added and transferred, to another base station;
• in each of the plurality of base stations, which are held in a connection state with the mobile terminal simultaneously;
• adding, when the information is added to the data transferred from the data relay apparatus, and transmitting the data with the sequence number to the mobile terminal;
• and
• in the mobile terminal
• receiving the data transmitted from the plurality of base stations respectively;
• said information relating to the reception order of said first and second data is an offset value which corresponds to an amount of the first data;
• and
• a processor of said data relay apparatus adds the offset value to said second data and transfers the second data and the added offset value to said another base station.

A method of communication of data in a communication system for transferring data from a data relay apparatus to a mobile terminal while adding, at a plurality of base stations, a sequence number to the data to be transferred to the mobile terminal, the method comprising:

• transferring from the data relay apparatus, when transferring a first data and second data, received from a network and addressed to the mobile station, through different base stations, among the plurality of base stations which are held in a connection state with the mobile terminal simultaneously, respectively, the first data, received before the second data, at one base station of the plurality of base stations and transferring the second data, to which information relating to reception order of the first data and second data is added and transferred, to another base station of the plurality of base stations;
• said information relating to the reception order of said first and second data is an offset value which corresponds to the amount of the first data;
• and
• a processor of said data relay apparatus adds the offset value to said second data and transfers the second data and the added offset value to said another base station.

A method of communication of data in a communication system for transferring data from a data relay apparatus to a mobile terminal while adding, at a plurality of base stations, a sequence number to the data to be transferred to the mobile terminal, the method comprising:

• adding, in accordance with information relating to a reception order of a first data and second data, addressed to the mobile terminal, which are sent from a network and received at the data relay apparatus, the sequence number to the second data sent from the data relay apparatus and received at a base station of the plurality of base stations, which are held in a connection state with the mobile terminal simultaneously, after the reception of the first data;
• and
• transmitting the second data with the sequence number to the mobile terminal;
• said information relating to the reception order of said first and second data is an offset value which corresponds to an amount of the first data;
• and
• a processor of said data relay apparatus adds the offset value to said second data and transfers the second data and the added offset value to another base station among the plurality of base stations.

A method of communication of data by a mobile terminal in a communication system for transferring the data from a data relay apparatus to the mobile terminal while adding, at a plurality of base stations, a sequence number to the data to be transferred to the mobile terminal, the method comprising:

• receiving at mobile terminal, among a first data and second data sent from a network and received at the data relay apparatus, the first data to which a sequence number is added by one of the plurality of base stations which are held in a connection state with the mobile terminal simultaneously and receiving the second data to which a sequence number is added by other base station in the plurality of base stations, and correcting, in accordance with the sequence numbers added to the first and second data respectively, an order of the first and the second data received;
• the first data is a data, addressed to the mobile terminal, which is received at the data relay apparatus from the network before the reception of the second data at the data relay apparatus;
• the sequence number added to the second data is a sequence number which is determined in accordance with information relating to the reception order of the first data and second data received at the data relay apparatus;
• said information relating to the reception order of said first and second data is an offset value which corresponds to an amount of the first data;
• and
• the offset value is added, by said data relay apparatus, to said second data and the second data added with offset value is transferred from the data relay apparatus to another base station among the plurality of base stations.

A communication system for transferring data from a data relay apparatus to a mobile terminal connected to a plurality of base stations, wherein,

• the data relay apparatus comprising
• a processor which performs processing, when transferring a first data and second data, different from the first data, received from a network and addressed to the mobile terminal through different base stations among the plurality of base stations, respectively, to reflect reception order of the first data and second data to by using information relating to the reception order of the first data and second data received at the data relay apparatus, transfer the first data to one base station and transfer the second data to another base station, the base stations are held in a connection state with the mobile terminal simultaneously;
• and
• the mobile terminal comprising
• a receiving unit which receives the first data through the one base station and also receives the second data through the other base station;
• said information relating to the reception order of said first and second data is an offset value which corresponds to an amount of the first data;
• and
• said processor adds the offset value to said second data and transfers the second data and the added offset value to said another base station.