Probing method for fast handoff in WLAN
US7400604B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 31, 2005 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Mar 11, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provided is a probing method for handoff including constructing a group of neighbor access points of a current access point with which the station associated, generating subgroups of the neighbor access points by the channel assigned to the access points, probing the access points by subgroup in a subgroup selection order, and selecting the neighbor access point having best link quality as a target access point to handoff. The probing method of the present invention is implemented with a novel non-overlap graph for constructing the neighbor graph such that the probing latency is dramatically reduced, resulting in reduction of handoff delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.