Radio device for preventing isolated radio devices in network
US8041377B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 27, 2007 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Sep 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W40/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A radio device is located far from other radio devices in a radio network system. The radio device determines a threshold WIth for detecting a strength equal to or more than the minimum strength of radio waves transmitted/received in a stable radio wave environment based on a plurality of reception signal strengths of Hello packets received from radio devices adjacent to the radio device. Then, if the number of radio devices adjacent to the radio device when the threshold WIth is introduced is less than a standard value (such as five), the radio device stores the adjacent radio devices in the neighbor list without introducing the threshold WIth, and then, maintains in the routing table the routing information of routes passing through the adjacent radio devices based on the neighbor list.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.