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Data transfer scheme using caching technique for reducing network load

  • US 20030005047A1
  • Filed: 06/13/2002
  • Published: 01/02/2003
  • Est. Priority Date: 06/13/2001
  • Status: Active Grant
First Claim
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1. A data transfer device for receiving first data transmitted from a first communication device, transmitting the first data to one of other data transfer devices connected to one of second communication devices that is a destination of the first data, receiving second data transmitted from one of the second communication devices through one of the other data transfer devices, and transmitting the second data to the first communication device that is a destination of the second data, the data transfer device comprising:

  • a reception unit configured to receive the first data from the first communication device;

    a cache unit configured to register cache data that were transmitted to one other data transfer device in past, in correspondence to cache data names each of which is generated according to a content of each cache data and assigned to each cache data, for each one of the other data transfer devices;

    a processing unit configured to carry out a processing for transmitting a first data name that is generated according to a content of the first data and assigned to the first data, instead of transmitting the first data, when the first data name is registered in the cache unit as corresponding to the one other data transfer device to which the first data should be transferred, or a processing for registering the first data in correspondence to the first data name into the cache unit as corresponding to the one other data transfer device, and transmitting the first data, when the first data name is not registered in the cache unit as corresponding to the one other data transfer device, upon receiving the first data transmitted from the first communication device; and

    a transmission unit configured to transmit the first data name or the first data to the one other data transfer device according to a processing carried out by the processing unit.

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