Radio communication apparatus, method and program
US7545308B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 2004 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Aug 24, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K2203/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for operating with a first radio system and a second radio system. First and second information is stored in the apparatus. The first information indicates at least one first channel which is used by the first system if a signal of the first system is detectable, and the second information indicating at least one second which fails to be used by the first system. A controller controls the second system to switch from the second channel to a third channel if the detector detects that a signal received through the third communication channel fails to be used in the first system. The second system includes a plurality of radios. The apparatus includes a modulation/demodulation unit that modulates and demodulates signals from the plurality of the radio systems. The signal are compatible are orthogonal frequency division multiplexed and are spread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.