Detection and correction of channel swap in spatial division multiple access systems
US6894993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2002 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Apr 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments of the invention provide various methods for detecting a spatial division multiple access (SDMA) channel swap. A first SDMA communication channel is assigned to a first user terminal that initially transmits its signal over the first SDMA communication channel. A second SDMA communication channel is assigned to a second user terminal that initially transmits its signal over the second SDMA communication channel. The first user terminal's signal and the second user terminal's signal are analyzed to determine that the first user terminal is transmitting its signal over the second SDMA communication channel and the second user terminal is transmitting its signal over the first SDMA communication channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.