Method of idle mode control in OFDM system
US7583624B2 · kind B2 · utility
1Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2004 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Sep 30, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method of idle mode control in an orthogonal frequency-division multiplexing (OFDM) system. By superposing idle mode control channels on a frame synchronization pattern in the frame header of an OFDM frame, mobile terminals at a low migration rate will be switched into idle mode during packet service transmission intermission period. The mobile terminals in idle mode needn't do FFT to check whether there is any packet to be received after receiving every frame, thereby the power energy of the mobile terminals is greatly saved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.