Adaptive data rate control for mobile data transfer for high throughput and guaranteed error rate
US7142562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2002 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Dec 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0025
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system applicable within a mobile transmission system for adaptively allocating a downlink data rate to an access terminal to compensate for channel fading. In accordance with the method of the present invention a downlink data rate is selected in accordance with a determined signal-to-noise level and an effective throughput, wherein the downlink data rate is associated with a specified signal-to-noise threshold to achieve a specified packet error rate. Next, a packet is transmitted to an access terminal at the selected downlink data rate. In response to successfully decoding the packet at the access terminal, the signal-to-noise threshold specified for the selected downlink data rate is decreased such that subsequent data rate selections are adaptively maximized. Responsive to a packet decoding error, the signal-to-noise threshold is abruptly increased to maintain the specified packet error rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.