System and method for time synchronization in a wireless network
US7688802B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2009 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | May 11, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system includes multiple wireless nodes forming a cluster in a wireless network, where each wireless node is configured to communicate and exchange data wirelessly based on a clock. One of the wireless nodes is configured to operate as a cluster master. Each of the other wireless nodes is configured to (i) receive time synchronization information from a parent node, (ii) adjust its clock based on the received time synchronization information, and (iii) broadcast time synchronization information based on the time synchronization information received by that wireless node. The time synchronization information received by each of the other wireless nodes is based on time synchronization information provided by the cluster master so that the other wireless nodes substantially synchronize their clocks with the clock of the cluster master.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.