Methods and devices for selecting sets of available sub-channels
US7990931B2 · kind B2 · utility
0Cited by
2References
4Claims
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Key dates
| Filing date | Jan 19, 2010 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Jan 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0044
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Information is transmitted over selected, Orthogonal Frequency Division Multiplexed (OFDM) sub-channels to avoid frequencies with unacceptable congestion, noise or interference levels. Using frequency hopping, selected non-contiguous OFDM sub-channels used for transmission may vary with time. Once a group of OFDM sub-channels is selected, a power level and modulation technique may also be selected based on channel quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.