Invention Grant
- Patent Title: Coverage enhancements of low cost MTC devices in uplink/downlink decoupled scenario
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Application No.: US14910434Application Date: 2014-08-07
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Publication No.: US11470619B2Publication Date: 2022-10-11
- Inventor: Moon-il Lee , Janet A. Stern-Berkowitz , J. Patrick Tooher , Nobuyuki Tamaki , Pouriya Sadeghi , Virgil Comsa , Samian Kaur , Stephen E. Terry
- Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
- Applicant Address: US DE Wilmington
- Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
- Current Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
- Current Assignee Address: US DE Wilmington
- Agency: Condo Roccia Koptiw LLP
- International Application: PCT/US2014/050211 WO 20140807
- International Announcement: WO2015/021318 WO 20150212
- Main IPC: H04W24/08
- IPC: H04W24/08 ; H04W72/08 ; H04W48/20 ; H04W72/04

Abstract:
Systems, methods, and instrumentalities are disclosed to describe cell selection in low cost machine type communication (LC-MTC) devices. An LTC-MC device may measure a plurality of downlink signals from a plurality of cells. The LTC-MC may detect a channel condition, e.g., by determining a cell with better uplink coverage than a downlink cell. The detection of the channel condition may include measuring an uplink pathloss. The LTC-MC may report the channel condition as a decoupled channel condition, e.g., when an uplink cell is identified with uplink coverage better than the downlink cell. The channel condition may be reported, e.g., via a set of Physical Random Access Channel (PRACH) preambles. The set of PRACH preambles may be predefined. The channel condition may be reported via a higher layer signaling.
Public/Granted literature
- US20160192376A1 COVERAGE ENHANCEMENTS OF LOW COST MTC DEVICES IN UPLINK/DOWNLINK DECOUPLED SCENARIO Public/Granted day:2016-06-30
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