US Patent No. 10,893,517

ALMOST BLANK SUBFRAME IN CARRIER AGGREGATION


Patent No. 10,893,517
Issue Date January 12, 2021
Title Almost Blank Subframe In Carrier Aggregation
Inventorship Esmael Hejazi Dinan, McLean, VA (US)
Assignee Comcast Cable Communications, LLC, Philadelphia, PA (US)

Claim of US Patent No. 10,893,517

1. A base station comprising:one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of second, fourth, seventh, and ninth subframes of each frame in a plurality of frames;
transmit, to a wireless device, a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes, of a primary carrier, that are not the plurality of Almost Blank Subframes;
transmit, to the wireless device, a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes, of the primary carrier, different from the first plurality of measurement subframes; and
transmit a first Almost Blank Subframe at a power level that is lower than during a subframe that is not an Almost Blank Subframe.