US Patent No. 9,282,469

INCREASING CINR GAIN IN A NETWORK DEPLOYING BEAM FORMING


Patent No. 9,282,469
Issue Date March 08, 2016
Title Increasing Cinr Gain In A Network Deploying Beam Forming
Inventorship Sungki Park, Ashburn, VA (US)
Brent Scott, Gardner, KS (US)
Saied Kazeminejad, Ashburn, VA (US)
Brett Christian, Independence, MO (US)
Assignee Sprint Communications Company L.P., Overland Park, KS (US)

Claim of US Patent No. 9,282,469

1. One or more computer-readable media having computer-executable instructions embodied thereon that, when executed, perform
a method of increasing carrier-to-interference-and-noise ratio (CINR) gain in a long-term-evolution (LTE) network deploying
beam forming (BF), the LTE network having at least a first eNodeB serving a first user equipment (UE) and a neighboring eNodeB
serving a second UE, wherein both the first eNodeB and the neighboring eNodeB utilize BF, the method comprising:
at the first eNodeB
determining a first downlink (DL) transmission beam to establish a communications link with the first UE, the first DL transmission
beam characterized by a first set of BF parameters comprising a UE reference signal (UERS), a pre-coding metric indicator
(PMI), a sounding reference signal (SRS), weights associated with the first DL transmission beam, a phase associated with
the first DL transmission beam, and an amplitude associated with the first DL transmission beam;

communicating the first set of BF parameters to the neighboring eNodeB;
receiving from the neighboring eNodeB a second set of BF parameters that characterize a second DL transmission beam used by
the neighboring eNodeB to establish a communications link with the second UE, the second set of BF parameters comprising a
UE reference signal (UERS), a pre-coding metric indicator (PMI), a sounding reference signal (SRS), weights associated with
the second DL transmission beam, a phase associated with the second DL transmission beam, and an amplitude associated with
the second DL transmission beam; and

adjusting the first DL transmission beam to increase the CINR gain at the first UE based on the second set of BF parameters
received from the neighboring eNodeB.