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US 9,439,078 B2Granted
Cooperative interference subtraction scheme
AssigneeSpectrum Effect Inc.
InventorsRekha Menon, Eamonn Gormley, Chaz Immendorf
Life of this patent
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Abstract
A cooperative interference subtraction scheme includes receiving a first baseband signal including an interference signal at a first base station, receiving a second baseband signal including the interference signal at a second base station, calculating a channel translation parameter based on the first baseband signal and the second baseband signal, receiving a signal including a user equipment (UE) transmission at the first base station during a first time slot, and subtracting interference from the signal including the UE transmission using the channel translation parameter.
Claims17
A method for subtracting interference in a wireless communications network, the method comprising:
- receiving a first baseband signal including an interference signal at a first base station;
- receiving a second baseband signal including the interference signal at a second base station;
- calculating a channel translation parameter based on the first baseband signal and the second baseband signal;
- receiving a signal including a user equipment (UE) transmission at the first base station during a first time slot;
- and
- subtracting interference from the signal including the UE transmission using the channel translation parameter,
- wherein subtracting interference from the signal including the UE transmission includes:
- receiving a signal including a UE transmission at the second base station during the first time slot;
- decoding the UE transmission received at the second base station;
- and
- subtracting the UE transmission from the signal including the UE transmission received by the second base station to create an interference signal,
- wherein the interference subtracted from the signal received at the first base station is a result of subtracting the UE transmission from the signal including the UE transmission received by the second base station.
9 more elements
An interference subtraction system for wireless communications, the system comprising:
- a first base station that receives a first baseband signal including an interference signal and receives a signal including a user equipment (UE) transmission during a first time slot;
- a second base station that receives a second baseband signal including the interference signal;
- a processor;
- a memory;
- and
- a non-transitory computer readable medium with computer executable instructions stored thereon which, when executed by the processor, perform the following operations:
- calculating a channel translation parameter based on the first baseband signal and the second baseband signal;
- and
- subtracting interference from the signal including the UE transmission using the channel translation parameter,
- wherein subtracting interference from the signal including the UE transmission includes:
- receiving a signal including a UE transmission at the second base station during the first time slot;
- decoding the UE transmission received at the second base station;
- and
- subtracting the UE transmission from the signal including the UE transmission received by the second base station to create an interference signal,
- wherein the interference subtracted from the signal received at the first base station is a result of subtracting the UE transmission from the signal including the UE transmission received by the second base station.
12 more elements
A method for subtracting interference in a wireless communications network, the method comprising:
- receiving a first baseband signal including an interference signal at a first base station;
- receiving a second baseband signal including the interference signal at a second base station;
- calculating a channel translation parameter based on the first baseband signal and the second baseband signal;
- receiving a signal including a user equipment (UE) transmission at the first base station during a first time slot;
- subtracting interference from the signal including the UE transmission using the channel translation parameter;
- decoding the signal including the UE transmission;
- reconstructing the UE transmission from the decoded signal;
- subtracting the reconstructed UE transmission from the signal including the UE transmission to create a second interference signal;
- and
- subtracting the second interference signal from a signal received at a third base station.
7 more elements
An interference subtraction system for wireless communications, the system comprising:
- a first base station that receives a first baseband signal including an interference signal and receives a signal including a user equipment (UE) transmission during a first time slot;
- a second base station that receives a second baseband signal including the interference signal;
- a third base station that receives a third signal;
- a processor;
- a memory;
- and
- a non-transitory computer readable medium with computer executable instructions stored thereon which, when executed by the processor, perform the following operations:
- calculating a channel translation parameter based on the first baseband signal and the second baseband signal;
- subtracting interference from the signal including the UE transmission using the channel translation parameter;
- decoding the signal including the UE transmission;
- reconstructing a UE transmission from the decoded signal;
- subtracting the reconstructed UE transmission from the signal including the UE transmission to create a second interference signal;
- and
- subtracting the second interference signal from the third signal received at the third base station.
11 more elements
Dependencies are inferred from the claim text.