Control method of wireless communication system, wireless communication system, wireless communication apparatus, and adjustment method of array weight vector
US8933840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2010 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Aug 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
To suppress adverse effects caused by side lobes of an antenna array when an AWV to be used for communication is determined based on a transmission/reception result of a training signal. A first transceiver generates a fixed beam pattern and transmits a training signal. In that state, a second transceiver receives the training signal while scanning for the main beam direction, and thereby determines a plurality of direction of arrivals (DOAs). Next, the second transceiver receives the training signal in a state where the signal receptions from the plurality of DODs are restricted one by one (e.g., a null direction or a direction close to the null direction is fixed in the DOA), and calculates the change of the signal characteristics from that obtained in the first reception. The transceivers obtain and use at least one AWV having the main beam direction or a sub-beam direction close to the main beam pointing to one of the plurality of DOAs except for the DOA for which the change is lower than a predefined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.