发明授权
- 专利标题: Hearability improvements for reference signals
- 专利标题(中): 参考信号的可靠性改进
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申请号: US12651838申请日: 2010-01-04
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公开(公告)号: US08982851B2公开(公告)日: 2015-03-17
- 发明人: Avneesh Agrawal , Ashwin Sampath , Ravi Palanki , Naga Bhushan , Raja Sekhar Bachu , Aamod D. Khandekar
- 申请人: Avneesh Agrawal , Ashwin Sampath , Ravi Palanki , Naga Bhushan , Raja Sekhar Bachu , Aamod D. Khandekar
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 主分类号: H04B7/216
- IPC分类号: H04B7/216 ; H04L27/28 ; H04J11/00 ; H04L5/00 ; H04W72/12
摘要:
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.
公开/授权文献
- US20100172311A1 HEARABILITY IMPROVEMENTS FOR REFERENCE SIGNALS 公开/授权日:2010-07-08