Apparatus and method for redundant connectivity and multi-channel operation of wireless devices
US7933240B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2007 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Nov 10, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless network includes leaf nodes (such as wireless sensors or other wireless devices) and infrastructure nodes (such as access points). The leaf nodes communicate data messages to the infrastructure nodes. The infrastructure nodes communicate the data messages to gateway infrastructure nodes, which transmit the data messages over a wired network. The leaf nodes may communicate data messages to multiple infrastructure nodes in various ways. For example, the leaf nodes may transmit multiple messages, one at a time, to multiple infrastructure nodes. The leaf nodes may also broadcast a single message to multiple infrastructure nodes. In addition, the leaf nodes may communicate a single message containing a group identifier (such as a multi-cast group address) associated with multiple infrastructure nodes. In this way, communications from the leaf nodes may be more reliable. This may be particularly useful, for example, in networks such as 802.11-based networks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.