Mobile-unit-dedicated data delivery assistance method
US7436796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2005 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Apr 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/568
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.