Method of WCDMA coverage based handover triggering
US6615044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jun 6, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/302
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of triggering an IF or IS handover between two WCDMA carrier or a WCDMA carrier and a GSM carrier. Six triggering conditions are used to initiate the search for an alternative network connection by starting the handover measurements. These triggering conditions are: a) the mobile terminal TxPwr has exceeded its threshold value longer than a specified time; b) the connection based power in the downlink has exceeded its threshold value longer than a specified time; c) the mobile terminal TxPwr has reached the maximum value a specified number of times; d) the SIR target at the base station has risen above a specified threshold value over a period of time; e) the mobile terminal TxPwr has exceeded its threshold value and the gradient of the power control signature indicates sudden rise to maximum power level; and f) the pilot power measured at the mobile terminal has fallen below a threshold value for long than a specified time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.