- 专利标题: Optimized cell acquisition for LTE TDD systems or CSG/eMBMS capable UEs
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申请号: US14685347申请日: 2015-04-13
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公开(公告)号: US09826419B2公开(公告)日: 2017-11-21
- 发明人: Pratik Kotkar , Alexei Yurievitch Gorokhov , Sachin Saraswat , Ning Yin , Srinivasan Rajagopalan , Muralidharan Murugan , Santosh Kumar Rongala
- 申请人: QUALCOMM Incorporated
- 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
- 代理商 Anthony R. Morris
- 主分类号: H04W24/02
- IPC分类号: H04W24/02 ; H04L5/14 ; H04L1/18 ; H04L29/06 ; H04W48/16 ; H04W84/04 ; H04W52/02
摘要:
Techniques for optimized cell acquisition for long term evolution (LTE) time division duplex (TDD) systems or closed subscriber group (CSG)/evolved Multicast Broadcast Multimedia Service (eMBMS) capable user equipments (UEs) are disclosed. A UE obtains configuration information, CSG capability information, and/or eMBMS capability information for a cell. The UE also stores the obtained information for the cell in a cell information database. In some aspects, the UE may employ the CSG and/or eMBMS capability information to select a weaker cell, during initial frequency scan at power up of the UE, based on cell capability. Additionally or alternatively, the UE may employ the configuration information to determine an initial mutual information (Mi) hypothesis value for physical hybrid-automatic repeat request (HART) indicator channel (PHICH) group mapping of the cell. Additionally or alternative, radio link failures and/or out of synch events may be predicted and proactive responses employed based on previously obtained solutions.
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