Wireless communication system
US8320493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2005 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Nov 13, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2602
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Improvement of transmission efficiency is sought by stopping transmission of unnecessary MLI data.A transmitting circuit 111 in a base station apparatus 110 has an MLI modulation part 248 composed of an MLI generating circuit 238, a symbol modulation circuit 239, and an IFFT circuit 240, a user data modulation part 249 composed of an encoder circuit 234, a symbol modulation circuit 235, a transmission power control circuit 236, and an IFFT circuit 237, and a transmission operation control circuit 113. The transmission operation control circuit 113 controls operation timing of the MLI modulation part 248, the user datamodulationpart 249, and a multiplexer 243 based on a signal to notify that ACK input from a receiving circuit 112 has been received so that slots containing no MLI data are generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.