OPERATION OF A MULTI-STANDARD BASE STATION SITE SUPPORTING AT LEAST TWO DIFFERENT RADIO ACCESS TECHNOLOGIES
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Abstract
In a multi-standard base station site, a first base station module is configured to operate in multi-antenna transmission mode according to a first radio access technology by means of multiple transmitter branches. The first base station module is also configured to determine phase/time compensation information based on UE feedback information representative of precoding matrix index, PMI. The multi-standard base station site is configured to perform, for operation according to the first radio access technology, a first compensation for a relative phase/time error between at least two of the transmitter branches based on the phase/time compensation information. A second base station module is configured to operate for transmission according to a second radio access technology by means of at least two of the multiple transmitter branches. The multi-standard base station site is configured to perform, for operation according to the second radio access technology, a second compensation for a relative phase/time error between at least two of the transmitter branches based on the phase/time compensation information from the first base station module.
24 Citations
51 Claims
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1-35. -35. (canceled)
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36. A method of operating a multi-standard base station site supporting at least two different radio access technologies, wherein said multi-standard base station site comprises a first base station module adapted for a first radio access technology and a second base station module adapted for a second radio access technology, and a common radio and multi-antenna infrastructure for said first and second base station modules comprising multiple transmitter branches, wherein at least said first base station module comprises a precoder for precoding information symbols by means of a precoding matrix for multi-antenna transmission to a number of user equipment terminals, wherein said method comprises the steps of:
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said first base station module operating in multi-antenna transmission mode according to the first radio access technology by means of said multiple transmitter branches; said first base station module determining phase/time compensation information based on feedback information representative of precoding matrix index (PMI) from at least one of said user equipment terminals; said multi-standard base station site performing, for operation according to the first radio access technology, a first compensation for a relative phase/time error between at least two of said transmitter branches based on said phase/time compensation information; said second base station module operating for transmission according to the second radio access technology by means of at least two of said multiple transmitter branches; and said multi-standard base station site performing, for operation according to the second radio access technology, a second compensation for a relative phase/time error between at least two of said transmitter branches based on said phase/time compensation information from said first base station module. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A multi-standard base station site supporting at least two different radio access technologies, wherein said multi-standard base station site (10) comprises:
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a first base station module adapted for a first radio access technology, a second base station module adapted for a second radio access technology, and a common radio and multi-antenna infrastructure for said first and second base station modules comprising multiple transmitter branches, wherein at least said first base station module comprises a precoder configured to precode information symbols by means of a precoding matrix for multi-antenna transmission to a number of user equipment terminals, wherein said first base station module is configured to operate in multi-antenna transmission mode according to the first radio access technology by means of said multiple transmitter branches, wherein said first base station module is configured to determine phase/time compensation information based on feedback information representative of precoding matrix index (PMI) from at least one of said user equipment terminals, wherein said multi-standard base station site is configured to perform, for operation according to the first radio access technology, a first compensation for a relative phase/time error between at least two of said transmitter branches based on said phase/time compensation information, wherein said second base station module is configured to operate for transmission according to the second radio access technology by means of at least two of said multiple transmitter branches, and wherein said multi-standard base station site is configured to perform, for operation according to the second radio access technology, a second compensation for a relative phase/time error between at least two of said transmitter branches based on said phase/time compensation information from said first base station module. - View Dependent Claims (47, 48, 49, 50, 51)
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Specification