Hand-off algorithm for elongated radiotelephone cells
US5170485A · kind A · utility
19Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1990 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Nov 7, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The hand-off process of the present invention minimizes the number of hand-offs in radiotelephone system using smaller, elongated cells that may provide radiotelephone coverage in an urban environment along streets. While in the idle mode, the process of the present invention keeps track of the radiotelephone's direction of travel. When the radiotelephone is making a call, the base station process of the present invention keeps track of any fade condition that occurs, both short term and long term, and hands the radiotelephone off to another cell if one of these conditions occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.