Method and apparatus for selecting a communication channel in a communication network
US6185423A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | May 28, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for reducing power consumption in a roaming portable communication device is described. Various embodiments include optimizing a channel acquisition scan, or pre-scan, and a background scan in order to delay the reaction to a suspected loss of coverage to prevent unnecessary roaming and the associated power consumption. A list of received signal strengths is generated for a number of possible channels. Only those channels with a received signal strength above a threshold level are retained. The received signal strength of the remaining possible channels is retested. The selected channel is determined from the remaining possible channels by comparing the received signal strength of the last channel used, the last channel attempted (if available), and a best channel having the highest received signal strength. In this manner, a method and apparatus of analyzing and organizing base station channel strengths for subsequent channel acquisitions based on the power consumption costs for acquisition of a new channel is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.