Hierarchical control signaling for mobile clients in distributed wireless controller system
US8428006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2010 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jun 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/26
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for a hierarchical distributed control architecture to support roaming wireless client devices. Access switches serve one or more Internet Protocol (IP) subnets that include plural IP addresses. The access switches are arranged in switch peer groups and store information about other access switches in that switch peer group and about locations of wireless client devices that are associated with any access switch in the switch peer group. The access switches are further grouped into a corresponding mobility sub-domain each including plural switch peer groups. Plural controller devices control access switches in a corresponding mobility sub-domain. Each controller device stores information about the access switches and about locations of wireless client devices within its mobility sub-domain. A central controller device communicates with the controller devices for the respective mobility sub-domains. The central controller device stores information about locations of wireless client devices in the mobility sub-domains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.