Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2005-01-21
2008-10-14
Harper, Vincent P. (Department: 2617)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S331000, C455S436000, C455S437000
Reexamination Certificate
active
07436796
ABSTRACT:
Contents delivery to a mobile node which changes its existence position is executed from a delivery node with a high quality. Each cache server is located between each wireless LAN in which the mobile node can exists and a wired network. Each cache server delivers contents from the delivery node to the mobile node while storing the contents into a buffer. When the mobile node has moved, the mobile node transmits a moving notice to a cache server which is connected to a wireless LAN of the moving destination. Having received the moving notice, the cache server acquires the content in the buffer from a cache server which the mobile node had utilized before the moving. This configuration allows retransmission of the contents to the mobile node, thereby resulting in an enhancement in the delivery quality.
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Takahashi Yasuhiro
Takeuchi Tadashi
Goetze Simon A
Harper Vincent P.
Hitachi , Ltd.
McDermott Will & Emery LLP
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