| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a technique of content delivery by multi-hop transfer which constitutes such groups as to reduce the influence of interference of radio signals, and delivers content in parallel in each group.SOLUTION: A delivery server includes: a radio transmission/reception section 11 for transmitting and receiving radio signals; a content accumulation section 15 for accumulating content to be delivered; a delivery group management section 13 for dividing a plurality of delivery terminals, which are destinations of the content, on the basis of information on radio interference between the delivery terminals, into a plurality of delivery groups each constituted of delivery terminals capable of receiving a radio signal transmitted from a corresponding one of representative terminals that are delivery terminals which do not receive radio signals transmitted from one another and cover no identical delivery terminals capable of receiving radio signals transmitted from one another; and a delivery control section 14s for transmitting the content to the representative terminals by a multi-hop transfer method via other delivery terminals, and controlling the representative terminals such that the representative terminals deliver the content to the delivery terminals within the delivery groups in parallel in each delivery group.</p> |
