System and method for enabling an access point in an ad-hoc wireless network with fixed wireless routers and wide area network (WAN) access points to identify the location of subscriber device
US7433691B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Nov 23, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method which enables access points in a wireless ad-hoc communications network to effectively and efficiently determine the approximate location of a mobile node without performing a broadcast flood. The system and method enables a message to be efficiently communicated from an access point of the network, which provides access to a portion of the network or access to another network, to a wireless mobile node in the network. The system and method employ the operations of determining the access point with which the wireless mobile node is affiliated, storing information in a routing table at the affiliated access point pertaining to a routing path from the affiliated access point to the wireless mobile node, and updating the routing path when the wireless mobile node moves by a certain amount. The wireless mobile node can provide this routing path information to the affiliated access point in data packets sent to the affiliated access point. The frequency at which the updating of the routing path information occurs can be based on the degree of mobility of the wireless mobile node. The system and method further perform the operations of providing the message to the aff…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.