Spatial mode adaptation at the cell edge using interferer spatial correlation
US8233926B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | May 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0697
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method is proposed for adapting the spatial transmission strategy in a cellular MIMO (multiple input multiple output) communication system for the downlink. Spatial mode adaptation, the choice of multiplexing, transmit diversity, number of streams, space-time code family, and the like are performed slowly based on side information from other base stations. Base stations exchange their transmission plans with neighboring base stations and broadcast this information to active users. Each user measures its susceptibility to spatial interference and returns this information to the base station. The base station then schedules active users according to the decisions made in interfering base stations and the preferred transmission strategies of its own users.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.