Gap design using discovery signal measurements
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United States of America Patent
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Aug 20, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jul 18, 2016
filing date -
Jul 18, 2016
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Abstract
A system and method of creating a “gap” in a network node's angular power profile to reduce the amount of inter-cell interference generated at certain critical directions. A plurality of network nodes may jointly derive the “gap” in the angular power profile of each of them. A transmitting node may rely on Discovery Reference Signal, DRS, based Reference Signal Received Power, RSRP, measurements of its beams from a neighboring node, which signals an interference metric for each beam indicating a relative beam interference level. The transmitting node utilizes the signaled metrics to determine which beams are causing undesirable interference and are to be removed from its set of candidate beams to create a “gap” in its angular power profile. The remaining candidate beams are used by the transmitting network node for subsequent directional data transmissions. Instead of this distributed approach, a central node-based beam removal approach may be implemented.
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