System for determining when a communication device should rate shift or roam in a wireless environment
US8218507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2008 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Jan 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods for improving communication performance in a wireless communication system where the wireless communication system has at least one mobile wireless communication device and a plurality of transmitter/receiver sites. The transmitter/receiver sites have a geographic area, defined as a cell, within which the mobile wireless communication devices can communicate with at least one of the transmitter/receiver sites. The methods determine when the mobile wireless communication device should rate shift or roam based on connection quality measurement data or position information such as GPS. In one method, the measurement data is subjected to configurable parameters to create a functional relationship value that is recorded. The recorded functional relationship values are trended and extrapolated to determine whether a rate shift or roam should be performed. In a second method, the measurement data taken prior to a communication connection failure is stored in at least one data vector with there being at least one data vector for each rate shift and one for roam. A functional relationship utilizing current measurements, last data rate, and the respective data vectors determines whet…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.