Method for time frequency spreading in a femtocell network for interference reduction
US8340038B2 · kind B2 · utility
4Cited by
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35Claims
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Key dates
| Filing date | Jan 6, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Mar 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A femtocell network uses idle resource blocks of a data frame to reduce interference by spreading the resource blocks of the users over the available spectrum. Spreading may be achieved by repeating the transmission using a number of the resource block groups. As a result, (a) more robustness is obtained against interference; (b) transmission power levels may be decreased because of the spreading, resulting in reducing interference between nearby femtocells and between a macrocell and a femtocell. Other methods of spreading such a frequency or time slot hopping may also be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.