Apparatus and method for improving reception performance in a smart antenna system
First Claim
1. An apparatus of a Base Station (BS) in a communication system, comprising:
- a channel state checker for checking a channel state of a Mobile Station (MS) serviced by the BS;
an interference cancellation decider for making a determination whether to cancel interference for the MS according to the channel state of the MS; and
a channel allocator for making a determination whether to allocate a fixed channel to the MS according to the determination of the interference cancellation decider.
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Abstract
An apparatus and method for improving the reception performance of a Mobile Station (MS) in a multiple antenna system are provided. In an apparatus of a Base Station (BS) in the multiple antenna system, upon receipt of a request for interference cancellation for a first MS serviced by a neighbor BS, a channel estimator estimates a channel from the first MS and a channel from a second MS serviced by the BS. A beam coefficient generator generates a first beam coefficient based on channel estimates of the first and second MSs and a second beam coefficient based on the channel estimate of the second MS. An interference cancellation decider determines whether to perform interference cancellation for the first MS using the first and second beam coefficients.
79 Citations
29 Claims
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1. An apparatus of a Base Station (BS) in a communication system, comprising:
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a channel state checker for checking a channel state of a Mobile Station (MS) serviced by the BS;
an interference cancellation decider for making a determination whether to cancel interference for the MS according to the channel state of the MS; and
a channel allocator for making a determination whether to allocate a fixed channel to the MS according to the determination of the interference cancellation decider. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus of a Base Station (BS) in a communication system, comprising:
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a channel estimator for, upon receipt of a request for interference cancellation for a first Mobile Station (MS) serviced by a neighbor BS, estimating a channel from the first MS and a channel from a second MS serviced by the BS;
a beam coefficient generator for generating a first beam coefficient based on channel estimates of the first and second MSs and a second beam coefficient based on the channel estimate of the second MS; and
an interference cancellation decider for determining whether to perform interference cancellation for the first MS using the first and second beam coefficients. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An operation method of a Base Station (BS) in a communication system, comprising the steps of:
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checking a channel state of a Mobile Station (MS) serviced by the BS;
determining whether to cancel interference for the MS according to the channel state of the MS;
determining whether to allocate a fixed channel to the MS according to the determination as to whether to cancel interference for the MS; and
sending interference cancellation information and channel allocation information of the MS to a neighbor BS. - View Dependent Claims (19, 20, 21, 22)
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23. An operation method of a Base Station (BS) in a communication system, comprising the steps of:
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estimating a channel from a first Mobile Station (MS) serviced by a neighbor BS and a channel from a second MS serviced by the BS, upon receipt of a request for interference cancellation for the first MS;
generating a first beam coefficient based on channel estimates of the first and second MSs and a second beam coefficient based on the channel estimate of the second MS;
determining whether to perform the interference cancellation for the first MS using the first and second beam coefficients; and
performing beamforming using the first beam coefficient when interference cancellation is performed for the first MS. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification