Configurable filter for multi-radio interference mitigation
First Claim
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1. A method of wireless communication, comprising:
- actively receiving on a first radio access technology (RAT); and
actively transmitting on a second radio access technology (RAT) while selectively filtering the transmissions from the second RAT to attenuate in-band power on a selected frequency range to reduce interference to receptions of the first RAT,wherein;
the receiving, the filtering and the transmitting are performed in a same wireless communication device, the filtering reducing interference to the receptions of the first RAT at the device,the filtering occurs at baseband,the selected frequency range of the second RAT is proximate to a frequency range of the first RAT and is attenuated by varying amounts, andthe amount of attenuation applied to the selected frequency range of the second RAT is greater at frequencies closer to the frequency range of the first RAT.
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Abstract
In a multi-radio device, a configurable filter may be placed on the transmit side of an aggressor radio to reduce interference to receive side performance of a victim radio. The filter may be adaptively configured based on performance of the victim radio. The configurable filter may be in the form of a notch filter. The depth and width of the notch filter may be configured. The filter may be used to create a virtual guard band between an Industrial Scientific and Medical (ISM) band and a cellular band by puncturing a physical uplink control channel (PUCCH) transmission nearest to the ISM band or reducing power on the nearest PUCCH transmission.
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Citations
32 Claims
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1. A method of wireless communication, comprising:
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actively receiving on a first radio access technology (RAT); and actively transmitting on a second radio access technology (RAT) while selectively filtering the transmissions from the second RAT to attenuate in-band power on a selected frequency range to reduce interference to receptions of the first RAT, wherein; the receiving, the filtering and the transmitting are performed in a same wireless communication device, the filtering reducing interference to the receptions of the first RAT at the device, the filtering occurs at baseband, the selected frequency range of the second RAT is proximate to a frequency range of the first RAT and is attenuated by varying amounts, and the amount of attenuation applied to the selected frequency range of the second RAT is greater at frequencies closer to the frequency range of the first RAT. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for wireless communication, comprising:
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means for actively receiving on a first radio access technology (RAT); and means for selectively filtering transmissions of the apparatus from a second radio access technology (RAT) to attenuate in-band power on a selected frequency range by varying amounts to reduce interference to receptions of the first RAT at the apparatus, the amount of attenuation being greater at frequencies closer to the frequency range of the first RAT, the filtering occurring at baseband, and the selected frequency range of the second RAT being proximate to a frequency range of the first RAT.
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17. A computer program product for wireless communication comprising:
a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising; program code to actively receive on a first radio access technology (RAT); and program code to actively transmit on a second radio access technology (RAT), from a same wireless communication device that actively receives on the first RAT, while selectively filtering the transmissions from the second RAT to attenuate in-band power on a selected frequency range to reduce interference to receptions of the first RAT at the device, the filtering occurring at baseband, the selected frequency range of the second RAT being proximate to a frequency range of the first RAT and being attenuated by varying amounts, the amount of attenuation being greater at frequencies closer to the frequency range of the first RAT.
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18. An apparatus for wireless communication comprising:
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a memory; and at least one processor coupled to the memory, the at least one processor being configured; to actively receive on a first radio access technology (RAT); and to actively transmit on a second radio access technology (RAT) while selectively filtering the transmissions from the second RAT to attenuate in-band power on a selected frequency range to reduce interference to receptions of the first RAT at the apparatus, the filtering occurring at baseband, the selected frequency range of the second RAT being proximate to a frequency range of the first RAT and being attenuated by varying amounts, the amount of attenuation being greater at frequencies closer to the frequency range of the first RAT. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification