Patent ID: 9014109
Filing Date: 2015-04-21
Classification: H04L,H04W

Abstract:
1. A base station to transfer data to a user equipment, the base station comprising: an interface to receive radio resource management (RRM) measurement from the user equipment on received reference signal (RS) strength for each base station of one or more other base stations in a surrounding area of the user equipment; an X2 interface to receive transmission information of almost blank subframes and corresponding cell-specific reference signal (CRS) resource element (RE) locations from the one or more other base stations; and a controller to manage bit-level PDSCH (Physical Downlink Shared Channel) muting information, which includes identifying PDSCH resource elements (REs) that each include one or more first bits suffering from CRS interference arising from one or more other base stations and that are to be subjected to bit-level muting, and allocating one or more second bits of each of the identified REs, which do not suffer from the CRS interference, to the identified REs, and not allocating the one or more first bits to the identified REs, based on the received almost blank subframes and the corresponding CRS RE locations and interference information received via RRM measurement reports, and to transfer data with two levels of bit allocations to various PDSCH REs to the user equipment.