Data distribution device and data distribution system

Abstract

PROBLEM TO BE SOLVED: To achieve accelerated data download by multiplexing while keeping balance between communication usage amount and network usage situation.SOLUTION: The data delivery system comprises a data delivery server, multiple networks, a terminal that can request to deliver data and a communication data control server that controls usage situation of the networks. The terminal collects communication amount data in each network from the communication data control server, divides the data to be delivered into data blocks so that their communication usage amounts are equal to each other and requests the data delivery server to separately deliver them. The data delivery server determines whether the data blocks requested by the terminal can be delivered within a communication time limit defined by the system. If a time required for transmitting the data blocks exceeds the communication time limit, it is attempted to shorten the data transmission time by compression. If the data block transmission time still exceeds the communication time limit after the data compression, the data blocks are subdivided.

Description

technical field [0001] This invention relates to improvements to systems for distributing data to users via a network. Background technique [0002] With the development of access network technologies represented by Fiber To The Home (FTTH) and various wireless communication technologies, the network bandwidth that users can use is gradually increasing, and the communication methods are also tending to be diversified. Diversification of communication means enables users to simultaneously use multiple communication paths to speed up communication. For example, technologies have been proposed that simultaneously transmit data through multiple communication layers to shorten the time required for data download. For example, Japanese Patent Application Laid-Open No. 07-212487 discloses a technique for realizing high-speed communication by dividing data into a plurality of equal-sized blocks and simultaneously transmitting data through a plurality of communication layers. In add...

AI Technical Summary

Problems solved by technology

For example, according to the technique disclosed in Patent Document 1, when dividing data into equal sizes and transmitting the divided data through different networks, the time required for communication may decrease depending on the utilization status of the network. an unacceptable difference

In addition, the requirements of users and network providers are in most cases opposite. Users tend to require the shortest communication time, while network providers focus on smoothing resource utilization and avoiding congestion. In the prior art described above, no means are provided to accommodate such conflicting requirements

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