Communication system including a base station and terminal devices each using an up-link line allocated by the base station
US8169997B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2006 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | May 13, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication system allocates a discrete line between a base station and each terminal device that allows discrete communication in a time span equivalent to several frames. The communication system includes a base station that has a processing function unit processing a physical layer using a given data format, and terminal devices each using an up-link line allocated by the base station. In the system, the base station and each terminal device communicates with each other by the orthogonal frequency division multiplexing method. The base station sends out a preamble signal cyclically, and has a means that sends out a vacant discrete connection identifier for identifying a vacant up-link line for a terminal device to send data to the base station when the base station receives an up-link line request from the terminal device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.