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US 9,426,675 B2Granted
System and method for adaptation in a wireless communications system
AssigneeFuturewei Technologies, Inc.
InventorsJialing Liu, Binnan Zhuang, Weimin Xiao, Ning Guo
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Abstract
A method for adapting communications system topology includes receiving, by an adaptation device, first signal plus interference to noise ratio (SINR) values from user equipments in a communications system, the first SINR values associated with a transmission configuration as configured by the communications system, and adapting, by the adaptation device, a topology of the communications system in accordance with the first SINR values received from the user equipments already attached to the communications system.
Claims22
A method for adapting communications system topology, the method comprising:
- receiving, by an adaptation device, first signal to interference plus noise ratio (SINR) values from user equipments in a communications system, the first SINR values associated with a transmission configuration as configured by the communications system, the first SINR values comprising a ratio of signal power to a sum of interference power and background noise power of a demodulated communications signal;
- exchanging utilization ratio (UR) values with cells in the communications system;
- and
- modifying, by the adaptation device, a topology of the communications system in accordance with the first SINR values received from the user equipments already attached to the communications system, wherein modifying the topology of the communications system comprises:
- determining a utility value for a user equipment with respect to each subset of cells in the communications system,
- selecting a second cell in the communications system with a highest of the utility values with respect to the user equipment, and
- informing the user equipment of the second cell.
4 more elements
A method for adapting communications system topology, the method comprising:
- measuring, by an adaptation device, channels between the adaptation device and cells in the communications system;
- deriving, by the adaptation device, first signal to interference plus noise ratio (SINR) values from the measured channels, the first SINR values comprising a ratio of signal power to a sum of interference power and background noise power of a demodulated communications signal;
- receiving utilization ratio (UR) values for cells in the communications system;
- and
- modifying, by the adaptation device, a topology of the communications system in accordance with the first SINR values, wherein modifying the topology of the communications system comprises:
- determining utility values for the cells in the communications system, each utility value comprising a second SINR value for a cell and a function of a UR value for the cell;
- selecting a target cell in the communications system with a highest of the utility values;
- and
- handing over to the target cell.
6 more elements
An adaptation device comprising:
- a receiver configured to receive first signal to interference plus noise ratio (SINR) values from user equipments in a communications system, the first SINR values associated with a transmission configuration as configured by the communications system, the first SINR values comprising a ratio of signal power to a sum of interference power and background noise power of a demodulated communications signal;
- and
- a processor operatively coupled to the receiver, the processor configured to modify a topology of the communications system in accordance with the first SINR values received from the user equipments already attached to the communications system, the processor further configured to exchange utilization ratio (UR) values with cells in the communications system, and wherein the processor is configured, for each subset of the user equipments in the communications system, to determine a utility value for the user equipment with respect to each subset of cells in the communications system, to select a second cell in the communications system with a highest of the utility values with respect to the user equipment, and to inform the user equipment of the second cell.
An adaptation device comprising:
- a receiver configured to receive information from cells in a communications system;
- and
- a processor operatively coupled to the receiver, the processor configured to measure channels between the adaptation device and the cells in the communications system, to derive first signal to interference plus noise ratio (SINR) values from the measured channels, the first SINR values comprising a ratio of signal power to a sum of interference power and background noise power of a demodulated communications signal, and to modify a topology of the communications system in accordance with the first SINR values, wherein the receiver is further configured to receive utilization ratio (UR) values for cells in the communications system, and wherein the processor is configured to determine utility values for the cells in the communications system, each utility value comprising a second SINR value for a cell and a function of a UR value for the cell, to select a target cell in the communications system with a highest of the utility values, and to hand over to the target cell.
Dependencies are inferred from the claim text.