Method for coverage optimization of multi-frequency assignment system
US6188906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/541
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for coverage optimization of a multi-frequency assignment communication system employing a dummy pilot channel, particularly a CDMA communication system. A first base station is configured to transmit communication signals to subscriber terminals using at least a first frequency allocation (FA#1) and a second frequency allocation (FA#2). A second base station transmits communication signals to subscriber terminals using FA#1 substantially more frequently than FA#2. The second base station has a dummy pilot at FA#2 which is used for handoff at FA#2. The method equalizes coverage in the first base station at FA#1 and FA#2 by transmitting the dummy pilot with less RF power than that for a pilot channel at FA#1 of the second base station, and sufficient to substantially equalize a handoff boundary between first and second cells at both FA#1 and FA#2 in an environment of more communication traffic and associated interference at FA#1 than at FA#2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.