Providing handoff in a spread spectrum wireless communications system for high rate packet data
US7542448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jan 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and an apparatus for wireless communication between a wireless unit and a set of base stations. The method includes signaling the wireless unit about a plurality of transmissions of same packet data from the set of base stations to enable a soft handoff on a forward link. The plurality of transmissions of same packet data having an unsynchronized relationship. The wireless unit may use a detection/demodulation function, which is capable of simultaneously receiving and decoding signals from two or more sectors (base stations). Instead of soft-combining signals received from multiple cell sectors, the wireless unit independently decodes the received signals. Since soft combining of transmissions is avoided, there is no need to synchronize their transmissions of the same data to a particular wireless unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.