Fast and long range node discovery in spread spectrum networks
US7760697B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2005 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Nov 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/74
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A first node seeking entry into a secure spread spectrum communications network sends a discovery burst at a low rate, and sends traffic bursts at a higher rate to exchange data rate for range. A receiving node receives discovery bursts via an omni-directional link and transmits and receives traffic bursts via directional links. As a node within the network detects a fading signal, it transmits a discovery burst at low rate on both its uplink and downlink channels. Other nodes may reply via the original uplink channel, and the fading node updates a list of candidate nodes through which it can relay through the network to its intended recipient by reversing the link direction of its original uplink and original downlink channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.