METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION BY A USER EQUIPMENT USING BLIND DETECTION
First Claim
1. A method of wireless communication at a user equipment (UE), comprising:
- receiving a signal, the received signal comprising a first cell signal and a second cell signal;
blindly estimating parameters associated with decoding the second cell signal, the blind estimation including detecting parameters associated with at least one of a modulation format and a spatial scheme of the second cell signal; and
cancelling interference from the received signal due to the second cell signal, the interference cancellation being based on the blindly estimated parameters.
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Accused Products
Abstract
In order to cancel any interference due to the second cell signal (e.g., from a non-serving cell) from a signal received at a UE, without receiving additional control information, the UE blindly estimates parameters associated with decoding the second cell signal. This may include determining a metric based on sets of symbols associated with the cell signals in order to determine parameters for the second cell signal, e.g., the transmission mode, modulation format, and/or spatial scheme of the second cell signal. The parameters for the signal may be determined based on a comparison of the metric with a threshold. When a spatial scheme and a modulation format is unknown, the blind estimation may include determining a plurality of constellations of possible transmitted modulated symbols associated with a potential spatial scheme and modulation format combination. Interference cancellation can be performed using the constellations and a corresponding probability weight.
129 Citations
85 Claims
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1. A method of wireless communication at a user equipment (UE), comprising:
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receiving a signal, the received signal comprising a first cell signal and a second cell signal; blindly estimating parameters associated with decoding the second cell signal, the blind estimation including detecting parameters associated with at least one of a modulation format and a spatial scheme of the second cell signal; and cancelling interference from the received signal due to the second cell signal, the interference cancellation being based on the blindly estimated parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for wireless communication, comprising:
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means for receiving a signal, the received signal comprising a first cell signal and a second cell signal; means for blindly estimating parameters associated with decoding the second cell signal; and means for cancelling interference from the received signal due to the second cell signal, the interference cancellation being based on the blindly estimated parameters. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A computer program product, comprising:
a computer-readable medium comprising code for; receiving a signal, the received signal comprising a first cell signal and a second cell signal; blindly estimating parameters associated with decoding the second cell signal; and cancelling interference from the received signal due to the second cell signal, the interference cancellation being based on the blindly estimated parameters.
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39. An apparatus for wireless communication, comprising:
a processing system configured to; receive a signal, the received signal comprising a first cell signal and a second cell signal; blindly estimate parameters associated with decoding the second cell signal; and cancel interference from the received signal due to the second cell signal, the interference cancellation being based on the blindly estimated parameters.
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40. A method of wireless communication, comprising:
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receiving at least one signal comprising a first set of symbols and a second set of symbols; determining a metric based on the first set of symbols and the second set of symbols; comparing the metric with a threshold; and determining a spatial scheme associated with the at least one signal based on the comparison. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. An apparatus for wireless communication, comprising:
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means for receiving at least one signal comprising a first set of symbols and a second set of symbols; means for determining a metric based on the first set of symbols and the second set of symbols; means for comparing the metric with a threshold; and means for determining a spatial scheme associated with the at least one signal based on the comparison. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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64. A computer program product, comprising:
a computer-readable medium comprising code for; receiving at least one signal comprising a first set of symbols and a second set of symbols; determining a metric based on the first set of symbols and the second set of symbols; comparing the metric with a threshold; and determining a spatial scheme associated with the at least one signal based on the comparison.
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65. An apparatus of wireless communication, comprising:
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a processing system configured to; receive at least one signal comprising a first set of symbols and a second set of symbols; determine a metric based on the first set of symbols and the second set of symbols; compare the metric with a threshold; and determine a spatial scheme associated with the at least one signal based on the comparison.
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66. A method of wireless communication, comprising:
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receiving a signal; determining that at least one of a spatial scheme and a modulation format is unknown for the signal; determining a plurality of constellations, each constellation comprising a plurality of possible transmitted modulated symbols associated with a potential spatial scheme and modulation format combination; determining a probability weight for each constellation. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73)
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74. An apparatus for wireless communication, comprising:
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means for receiving a signal; means for determining that at least one of a spatial scheme and a modulation format is unknown for the signal; means for determining a plurality of constellations, each constellation comprising a plurality of possible transmitted modulated symbols associated with a potential spatial scheme and modulation format combination; means for determining a probability weight for each constellation. - View Dependent Claims (75, 76, 77, 78, 79, 80, 81)
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82. A computer program product, comprising:
a computer-readable medium comprising code for; receiving a signal; determining that at least one of a spatial scheme and a modulation format is unknown for the signal; determining a plurality of constellations, each constellation comprising a plurality of possible transmitted modulated symbols associated with a potential spatial scheme and modulation format combination; determining a probability weight for each constellation. - View Dependent Claims (83)
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84. An apparatus of wireless communication, comprising:
a processing system configured to; receive a signal; determine that at least one of a spatial scheme and a modulation format is unknown for the signal; determine a plurality of constellations, each constellation comprising a plurality of possible transmitted modulated symbols associated with a potential spatial scheme and modulation format combination; determine a probability weight for each constellation. - View Dependent Claims (85)
Specification