Power control protocol for highly variable data rate reverse link of a wireless communication system
US6956840B1 · kind B1 · utility
67Cited by
22References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1998 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Sep 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A technique for implementing closed loop power control in a Code Division Multiple Access (CDMA) type wireless system which dynamically assigns coded channels on a demand basis. The technique maintains a proper power level, even when no traffic channels are allocated, by determining a link quality metric based upon the reverse link power received. This determination is made in response to a heartbeat signal sent at a rate which is only sufficiently fast to maintain code phase lock, for example, depending upon the expected maximum rate at which the subscriber unit will travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.