DELIVERY NETWORK, SERVER, AND DELIVERY METHOD
First Claim
Patent Images
1. A delivery network system comprising:
- a plurality of servers arranged on a mobile network, each of the servers being configured to function as a cache server or a proxy server, and including;
a storage unit configured to temporarily store a replica of at least a portion of contents held by a delivery server, the delivery server being configured to deliver content on the Internet;
a determination unit configured to receive a list of the content stored in the own server or a list of content stored in a different one of the servers and determine the server holding requested content, using information included in a content request message from a communication terminal;
a securing unit configured to read a file or a stream of the requested content from the determined server; and
a delivery unit configured to estimate a bandwidth of the mobile network, based on information on a transmitted packet and a response signal or a congestion state notification signal from the communication terminal and transmit moving image content by controlling a timing of transmitting the read file or the read stream based on a bit rate of the read file or the read stream and the estimated bandwidth so as not to exceed the estimated bandwidth, when the requested content is the moving image content.
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Accused Products
Abstract
In a delivery network system, deliver a server that holds requested content is determined, using information included in a content request message from a communication terminal. A file or stream of the requested content is read from the determined server. When the content is moving image content, a bandwidth of a mobile network is estimated, based on a response signal or a congestion state notification signal from the communication terminal. The moving content is transmitted by controlling a timing of transmitting the read file or the read stream so as not exceed the estimated bandwidth.
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Citations
12 Claims
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1. A delivery network system comprising:
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a plurality of servers arranged on a mobile network, each of the servers being configured to function as a cache server or a proxy server, and including; a storage unit configured to temporarily store a replica of at least a portion of contents held by a delivery server, the delivery server being configured to deliver content on the Internet; a determination unit configured to receive a list of the content stored in the own server or a list of content stored in a different one of the servers and determine the server holding requested content, using information included in a content request message from a communication terminal; a securing unit configured to read a file or a stream of the requested content from the determined server; and a delivery unit configured to estimate a bandwidth of the mobile network, based on information on a transmitted packet and a response signal or a congestion state notification signal from the communication terminal and transmit moving image content by controlling a timing of transmitting the read file or the read stream based on a bit rate of the read file or the read stream and the estimated bandwidth so as not to exceed the estimated bandwidth, when the requested content is the moving image content. - View Dependent Claims (2, 3, 4)
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5. A server arranged on a mobile network and configured to function as a cache server or a proxy server, the server comprising:
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a storage unit configured to temporarily store a replica of at least a portion of contents held by a delivery server, the delivery server being configured to deliver content on the Internet; a determination unit configured to receive a list of the content stored in the own server or a list of content stored in a different one of the servers and determine the server holding requested content, using information included in a content request message from a communication terminal; a securing unit configured to read a file or a stream of the requested content from the determined server; and a delivery unit configured to estimate a bandwidth of the mobile network, based on information on a transmitted packet and a response signal or a congestion state notification signal from the communication terminal and transmit moving image content by controlling a timing of transmitting the read file or the read stream based on a bit rate of the read file or the read stream and the estimated bandwidth so as not to exceed the estimated bandwidth, when the requested content is the moving image content. - View Dependent Claims (6, 7, 8)
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9. A delivery method by a serve configured to function as a cache server or a proxy server, a plurality of the servers being provided on a mobile network, the method comprising:
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temporarily storing a replica of at least a portion of contents held by a delivery server, the delivery server being configured to deliver content on the Internet; receiving a list of the content stored in the own server or a list of content stored in a different one of the servers and determining the server holding requested content, using information included in a content request message from a communication terminal; reading a file or a stream of the requested content from the determined server; and when the requested content is moving image content, estimating a bandwidth of the mobile network, based on information on a transmitted packet and a response signal or a congestion state notification signal from the communication terminal and transmitting the moving image content by controlling a timing of transmitting the read file or the read stream based on a bit rate of the read file or the read stream and the estimated bandwidth so as not to exceed the estimated bandwidth. - View Dependent Claims (10, 11, 12)
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Specification