Assisting measurements in small cells with an on/off scheme
First Claim
Patent Images
1. A method, in a base station of a cellular network, the method comprising:
- obtaining a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which each of a plurality of cells of a cellular network is to transmit a corresponding discovery signal, each of the discovery signal windows comprising a plurality of subframes in which separate discovery signals can be transmitted; and
sending an indication of the discovery signal window pattern from the base station to a terminal device.
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Abstract
Techniques are provided to ensure that a terminal device is able to perform measurements efficiently when an on/off scheme is used by network nodes, particularly in a heterogeneous network environment. An example method, implemented in a network node, comprises obtaining (720) a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which each of a plurality of cells is to transmit a corresponding discovery signal, and sending (730) an indication of the discovery signal window pattern to a terminal device.
11 Citations
35 Claims
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1. A method, in a base station of a cellular network, the method comprising:
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obtaining a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which each of a plurality of cells of a cellular network is to transmit a corresponding discovery signal, each of the discovery signal windows comprising a plurality of subframes in which separate discovery signals can be transmitted; and sending an indication of the discovery signal window pattern from the base station to a terminal device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, in a terminal device, comprising:
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obtaining a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which a base station for each of a plurality of cells of a cellular network is to transmit a corresponding discovery signal, each of the discovery signal windows comprising a plurality of subframes in which separate discovery signals can be transmitted; and performing one or more measurements for one or more of the plurality of cells during the one or more discovery signal windows. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A base station comprising a communications interface circuit and a processing circuit, wherein the processing circuit is configured to:
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obtain a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which each of a plurality of cells of a cellular network is to transmit a corresponding discovery signal, each of the discovery signal windows comprising a plurality of subframes in which separate discovery signals can be transmitted; and send an indication of the discovery signal window pattern from the base station to a terminal device. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A terminal device comprising a transceiver circuit and a processing circuit, wherein the processing circuit is configured to:
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obtain a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which a base station for each of a plurality of cells of a cellular network is to transmit a corresponding discovery signal, each of the discovery signal windows comprising a plurality of subframes in which separate discovery signals can be transmitted; and perform one or more measurements for one or more of the plurality of cells during the one or more discovery signal windows. - View Dependent Claims (29, 30, 31, 32, 33)
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34. A non-transitory computer-readable medium comprising, stored thereupon, a computer program product comprising program instructions that, when executed by a processing circuit of a base station in a communications network, cause the base station to:
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obtain a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which each of a plurality of cells of a cellular network is to transmit a corresponding discovery signal, each of the discovery signal windows comprising a plurality of subframes in which separate discovery signals can be transmitted; and send an indication of the discovery signal window pattern from the base station to a terminal device, using the communications interface circuit.
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35. A non-transitory computer-readable medium comprising, stored thereupon, a computer program product comprising program instructions that, when executed by a processing circuit of a terminal device operating in a communications network, cause the terminal device to:
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obtain a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which a base station for each of a plurality of cells of a cellular network is to transmit a corresponding discovery signal, each of the discovery signal windows comprising a plurality of subframes in which separate discovery signals can be transmitted; and perform one or more measurements for one or more of the plurality of cells during the one or more discovery signal windows, using the transceiver circuit.
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Specification