Method and apparatus for initiating a reverse link intergenerational handoff in a CDMA communication system
US7072311B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2000 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Oct 26, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for initiating a reverse link intergenerational handoff in a CDMA communication system that measures and compares parameters between a serving base station of one generation and a target base station of another generation to determine the best possible handoff initiation time instant for performing a reverse link intergenerational hard handoff. Different embodiments can utilize one of several procedures to determine the best possible handoff initiation time instant. A pilot signal strength embodiment determines a handoff initiation time instant based upon the total pilot signal strength of both a serving and target base station. An Eb/Nt embodiment determines a handoff initiation time instant based upon Eb/Nt (ratio of average power per bit to total received power spectral density) values of both a serving and a target base station. The method and apparatus decreases the probability of degraded or dropped calls during intergenerational handoffs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.