Cross link interference measurement for wireless communications in 5G or other next generation network
AssigneeAT&T Intellectual Property I, L.P.
InventorsArunabha Ghosh, Thomas Novlan, Xiaoyi Wang
Life of this patent
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Abstract
A cross link interference (CLI) measurement system is disclosed. The cross link interference measurement system can measure both unconstrained CLI that do not require any special constraints on the frame structure, and constrained CLI that does require special constraints on the frame structure (e.g., measurement gaps). The system does this in part by not only measuring reference signal received powers, but also determining load based on a power scaling of a reference signal and based on angle of arrival determinations.
Claims20
A receiver device, comprising:
- a processor;
- and
- a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
- measuring a signal strength of a first transmission received from a first transmitter device;
- measuring an angle of arrival of a second transmission received from a second transmitter device during a period of time, wherein the second transmission is received during a measurement gap in a frame;
- determining a cross-link interference of the second transmission based on the angle of arrival of the second transmission;
- and
- determining a degradation level of a signal link associated with the first transmission based on a function of a difference between the signal strength of the first transmission and the cross-link interference associated with the angle of arrival of the second transmission.
A receiver device, comprising:
- a processor;
- and
- a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
- receiving, via an over the air connection, a reference signal from a first transmitter device via antennas of the receiver device, wherein the receiving the reference signal comprises receiving the reference signal during a measurement gap in a frame;
- determining respective powers of the reference signal corresponding to the antennas based on a function associated with the antennas;
- determining a load at the first transmitter device based on the respective powers of the reference signal;
- measuring an angle of arrival of the reference signal during an interval of time;
- estimating a cross-link interference based on the angle of arrival and the load of the first transmitter device;
- measuring signal strength of a signal transmitted by a second transmitter device;
- and
- estimating degradation of the signal based on the signal strength and the cross-link interference associated with the angle of arrival and the load of the first transmitter device.
A method, comprising:
- measuring, by a receiver device comprising a processor, a signal strength of a first transmission received from a first transmitter device;
- measuring, by the receiver device, angle of arrival data indicative of an angle of arrival of a second transmission received from a second transmitter device during a period of time, wherein the second transmission is received during a measurement gap in a frame;
- estimating, by the receiver device, a cross-link interference of the second transmission based on the angle of arrival data associated with the second transmission;
- and
- determining, by the receiver device, a degree of degradation of a signal link associated with the first transmission based on a function of a difference between the signal strength of the first transmission and the cross-link interference estimated based on the angle of arrival data associated with the second transmission.
Dependencies are inferred from the claim text.