Method and apparatus for soft handoff between base stations using different frame formats
US7336954B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2002 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Aug 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of enabling soft handoff between base stations using different signaling frame formats allows soft handoff from an origination base station supporting a lower Protocol Data Unit revision format to an alternative base station supporting a higher Protocol Data Unit revision format, as well as soft handoff between an origination base station supporting a higher Protocol Data Unit revision format to an alternative base station supporting a lower Protocol Data Unit revision format. The base station using the higher Protocol Data Unit revision format downgrades to the lower Protocol Data Unit revision format for the duration of soft handoff. As all base stations use the same Protocol Data Unit revision format during soft handoff, the signals from all of the receive paths can be combined by a mobile station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.