Time synchronization for distributed mobile ad hoc networks
US8391271B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2010 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jun 9, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Time synchronization among nodes in a wireless mobile ad hoc network (MANET) is obtained using a cross layer approach. Each node maintains a routing table that contains entries corresponding to other nodes of the network that are one or more hops away from the node, and topology messages are exchanged periodically among the nodes in order to update their routing tables. A network master node is selected, and remaining nodes that are one or more hops away from the master node are defined as slave nodes. The master node includes master timing information in the topology messages it transmits. The timing information is concatenated to include a first time (T1) at which a topology message was received by the master from each of the slave nodes, and a second time (td) at which the master node transmits a topology message after receiving all the topology messages from the slave nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.