Transmit power management for specific absorption rates
US8825102B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2011 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Sep 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/38
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for regulating transmit power in a mobile station to comply with SAR limits are disclosed. A mobile station may include a processor, transmitter, and proximity sensor. The transmitter is configured to operate at a transmit power controlled by a first transmit power limit. The proximity sensor identifies how close the mobile station is to a human head. A transmit power regulator, implemented on the processor, determines the cumulative energy radiated by the transmitter over a specified number of frames. If the cumulative energy exceeds an energy limit based on a SAR limit, and the proximity sensor indicates that the mobile station is close to a human head, the transmit power regulator may decrease the transmit power limit of the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.