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

摘要

When transmitting data from a data relay apparatus to a mobile station through a plurality of base stations, the plurality of base stations add sequence numbers to the data and transmits the data with the sequence number. The data relay apparatus transfers a first data and second data to the mobile station through different base stations among the plurality of base stations, in which the data relay apparatus transfers the first data received before the second data to one base station and transfers the second data while adding thereto information indicating the reception order of the first and second data. Each of the plurality of base stations, when the data transferred from the data relay apparatus contains the information added thereto, adds the sequence number to the data based on the information and transmits the data with the sequence numbers to the mobile station.

主权项

1. A 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, wherein:
the data relay apparatus comprising a first 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, respectively, to transfer the first data received before the second data to one of the plurality of base stations and by adding 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 which are held in a connection state with the mobile terminal simultaneously; each of the plurality of base stations comprising a second processor which performs processing, when the information is added to the data transferred from the data relay apparatus, to add the sequence number based on the information to the data transferred and transmit the data with the sequence number to the mobile terminal; and the mobile terminal comprising a receiving unit which receives the data transmitted from each 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 an amount of the first data; and said first processor adds the offset value to said second data and transfers the second data and added offset value to said another base station.