Patent ID: 8676215
Filing Date: 2014-03-18
Classification: H04W

Abstract:
1. A method in a wireless communication system wherein at least one cell in the wireless communication system is characterized as a heterogeneous cell having a serving base station and including at least one small cell subtended within a coverage area of the serving base station, the method comprising: determining a geographical area circumscribing a boundary of the at least one small cell as constituting an interference suppression zone; causing a mobile station entering the interference suppression zone to adjust reverse-link transmission power; and wherein the wireless system determines a scope of the interference suppression zone and provides a threshold to a served mobile station from which the mobile station is enabled to determine proximity to the interference suppression zone based on comparison of calculated distance or downlink power measurements with the provided threshold, and wherein the provided threshold is a nominal suppression distance, D nom, and the mobile determines an entry point into the interference suppression zone as a distance from the boundary of the at least one small cell, D sup, as a function of D nom, speed of the mobile terminal, and Reference Signal Receive Power (RSRP) on the downlink from a macro cell.