Open loop MU-MIMO
US7907677B2 · kind B2 · utility
12Cited by
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15Claims
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Key dates
| Filing date | Sep 29, 2007 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Oct 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/54
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A unified open loop single-user/multiple-user multiple-input-multiple-output (MIMO) system and method are disclosed. The system and method operate without use of channel state information feedback. Instead, the method utilizes channel quality indicator feedback to schedule users to spatial resource blocks. Both symmetric multi-user MIMO schemes (like 2×2 and 4×4) and asymmetric multi-user MIMO schemes are considered. CQI feedback and reduction proposals are also introduced. The method may be used in a proposed network topology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.