Method of controlling power in a telecommunication system
US6813479B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2001 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Jan 28, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/146
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A simulation method for the resolution of the power control convergence problem. The power to be transmitted by each mobile station and each base station to assure a proper Qos in the system are computed in an iterative way. At each iterative step, the powers to be received are derived from the level of interference received at the previous iterative step by each network element. Once this is done for each network element, the interference levels are then refreshed. The iterations stop when the biggest gap between estimated and observed interference levels is below a given threshold. One embodiment includes deriving in one step all the power levels to be transmitted by one base station towards many users, assuming a given stable extra cell interference level. In addition, the invention includes a method for taking the dynamic range of power control in both uplink and downlink, and a method for simulation of power control while in the soft handover. Accordingly, the computational complexity of the resolution of the power control convergence problem in CDMA cellular network is drastically reduced. A reduced complexity when cascading successive static simulations is achieved and dynam…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.