Erasure detection and power control for a transport channel with unknown format in a wireless communication system
US7730381B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2004 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Jan 13, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/362
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Erasure detection and power control are performed for an intermittently active transport channel with unknown format. A receiver processes each received block and determines whether it passes or fails CRC. For each received block with CRC failure, the receiver performs erasure detection by computing a symbol error rate (SER) and energy of the received block, comparing the computed SER against an SER threshold, comparing the computed energy against an energy threshold, and declaring an erasure if the computed SER is less than the SER threshold and the computed energy exceeds the energy threshold. The SER and energy thresholds may be adjusted based on the average SER and the average energy for prior received blocks with CRC failures. For power control, an SIR target is increased by an UP step whenever an erased block is detected for the transport channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.