Method for setting power control initial value using indication light in visible light communications and transmission/receive apparatus using the same
US8554086B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 2008 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Aug 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/1143
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method for setting a power control initial value by using an indication light in visible light communications and a transmission/reception (Tx/Rx) apparatus using the method. The method includes the steps of: radiating multiple indication lights having power levels different from one another by a visible light communication transmitter; aligning a communication position simultaneously with measuring Received Signal Strength Indication (RSSI) of the indication light on detecting the indication light, selecting a power level whose RSSI is in a preset threshold range and which is adequate for transmission/receive among the multiple power levels different from one another, and informing the visible light communication transmitter of the adequate power level by a visible light communication receiver; and transmitting data from the visible light communication transmitter to the visible light communication receiver by using a transmitted power initial value according to a selected power level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.