Invention Grant
- Patent Title: Enhancement of inter-cell interference coordination with adaptive reduced-power almost blank subframes based on neighbor cell profile data
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Application No.: US15476922Application Date: 2017-03-31
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Publication No.: US10243622B2Publication Date: 2019-03-26
- Inventor: Zhi Cui , Cheng P. Liu , Hongyan Lei
- Applicant: AT&T Intellectual Property I, L.P. , AT&T Mobility II LLC
- Applicant Address: US GA Atlanta US GA Atlanta
- Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.,AT&T MOBILITY II LLC
- Current Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.,AT&T MOBILITY II LLC
- Current Assignee Address: US GA Atlanta US GA Atlanta
- Agency: Amin, Turocy & Watson, LLP
- Main IPC: H04B7/022
- IPC: H04B7/022 ; H04B7/024 ; H04J11/00 ; H04W72/04 ; H04W72/12

Abstract:
An inter-cell interference coordination procedure in heterogeneous networks (HetNets) is enhanced based on utilization of cell profile data associated with neighbor access points to improve HetNet spectrum efficiency, mobility performance, and/or overall network capacity. In one aspect, a macro access point can receive cell profile data associated with neighbor access points and modify a power level of reduced-power almost blank subframes (ABS) transmitted by the macro access point to manage macro cell capacity. Further, the macro access point can configure the ABS pattern and transmit the ABS pattern to the neighbor access points. Based on the ABS pattern, the neighbor access points can schedule transmissions to user equipment that are located at (or close to) their cell-edge to reduce inter-cell interference.
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