Patent ID: 9179396
Filing Date: 2015-11-03
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A method for detecting an Almost-Blank Subframe (ABS) configuration for an interfering macro cell of a heterogeneous network, the method being implemented in a wireless terminal and comprising: for one or more resource blocks in a received signal that is received from a cell in the heterogeneous network that is not the interfering macro cell, calculating a first power metric as a function of channel response estimates determined for predicted common reference signal (CRS) resource element locations in a plurality of symbols; for the one or more resource blocks in the received signal, calculating a second power metric as a function of channel response estimates determined for the predicted CRS resource element locations in a single one of the plurality of symbols; comparing a difference between the first and second power metrics to a threshold; and determining whether the interfering macro cell is operating in a Multicast and Broadcast Single Frequency Network (MBSFN) mode or a non-MBSFN mode based on the comparison, wherein the MBSFN mode corresponds to the difference being greater than or equal to the threshold, and the non-MBSFN mode corresponds to the difference being less than the threshold.