Hearability improvements for reference signals
US8982851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2010 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Apr 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/566
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methodologies are described that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell-specific reference signals (CRS), to improve hearability thereof for applications such as trilateration and/or the like. In particular, PRSs can be transmitted in designated or selected positioning subframes. Resource elements within the positioning subframe can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, portions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.