System and method for efficiently performing two-way ranging to determine the location of a wireless node in a communications network
US6768730B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | May 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/26
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for reducing the number of transmissions required for a node in a communications network to range other nodes in the network, while also enabling the node to continuously monitor the reservation channel during the ranging process without the use of a second receiver, and to indicate to the ranged node and other nodes in the network that the ranging node and the ranged node are not tuning to a data channel to perform the ranging, to thus enable the node to more efficiently determine its geographic location. The system and method further enables a node in a wireless communications network to minimize the amount of time it is not monitoring the reservation channel while receiving information messages from other nodes in the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.