CONTENT DISTRIBUTION SYSTEM, CONTROL APPARATUS, AND CONTENT DISTRIBUTION METHOD
First Claim
1. A content distribution system, comprising, in a mobile network:
- a plurality of packet forwarding apparatuses that forward a packet;
a plurality of cache servers that temporarily hold a content item and transmit the content item through any one of the plurality of packet forwarding apparatuses; and
a control apparatus that controls the plurality of cache servers, whereinthe control apparatus comprises;
an access measurement unit that computes an access frequency for a content item stored in the plurality of cache servers based on a number of accesses to the content item;
a content disposition determination unit that determines disposition of content items in the plurality of cache servers, using at least one of a load status of the plurality of cache servers, topology information of the mobile network, in-zone information of a terminal requesting a content item, and the access frequency to instruct the plurality of cache servers to obtain a content item according to the determined disposition; and
a cache server selection unit that, upon receipt of a request for a content item from the terminal, instructs a cache server that holds the content item among the plurality of cache servers to transmit the content item.
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Accused Products
Abstract
A control apparatus computes an access frequency for a content item stored in a plurality of cache servers that temporarily hold a content item based on a number of accesses to the content item, determines disposition of content items in the plurality of cache servers, using at least one of a load status of the plurality of cache servers, topology information of a mobile network, in-zone information of a terminal requesting a content item, and the access frequency to instruct the plurality of cache servers to obtain a content item according to the determined disposition, and, upon receipt of a request for a content item from the terminal, instructs a cache server that holds the content item among the plurality of cache servers to transmit the content item through a packet forwarding apparatus.
27 Citations
25 Claims
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1. A content distribution system, comprising, in a mobile network:
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a plurality of packet forwarding apparatuses that forward a packet; a plurality of cache servers that temporarily hold a content item and transmit the content item through any one of the plurality of packet forwarding apparatuses; and a control apparatus that controls the plurality of cache servers, wherein the control apparatus comprises; an access measurement unit that computes an access frequency for a content item stored in the plurality of cache servers based on a number of accesses to the content item; a content disposition determination unit that determines disposition of content items in the plurality of cache servers, using at least one of a load status of the plurality of cache servers, topology information of the mobile network, in-zone information of a terminal requesting a content item, and the access frequency to instruct the plurality of cache servers to obtain a content item according to the determined disposition; and a cache server selection unit that, upon receipt of a request for a content item from the terminal, instructs a cache server that holds the content item among the plurality of cache servers to transmit the content item. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A control apparatus that controls in a mobile network a plurality of cache servers that temporarily hold a content item, the control apparatus comprising:
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an access measurement unit that computes an access frequency for a content item stored in the plurality of cache servers based on a number of accesses to the content item; a content disposition determination unit that determines disposition of content items in the plurality of cache servers, using at least one of a load status of the plurality of cache servers, topology information of the mobile network, in-zone information of a terminal requesting a content item, and the access frequency to instruct the plurality of cache servers to obtain a content item according to the determined disposition; and a cache server selection unit that, upon receipt of a request for a content item from the terminal, instructs a cache server that holds the content item among the plurality of cache servers to transmit the content item through a packet forwarding apparatus. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A content distribution method, comprising:
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by a control apparatus that controls in a mobile network a plurality of cache servers that temporarily hold a content item, computing an access frequency for a content item stored in the plurality of cache servers based on a number of accesses to the content item; determining disposition of content items in the plurality of cache servers, using at least one of a load status of the plurality of cache servers, topology information of the mobile network, in-zone information of a terminal requesting a content item, and the access frequency; instructing the plurality of cache servers to obtain a content item according to the determined disposition; and upon receipt of a request for a content item from the terminal, instructing a cache server that holds the content item among the plurality of cache servers to transmit the content item through a packet forwarding apparatus. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification