Devices and method using transmit power control and scheduling for LTE unlicensed band operation
First Claim
1. An apparatus of an enhanced NodeB (eNB) comprising:
- a transceiver arranged to communicate with a user equipment (UE) over an unlicensed channel in an unlicensed band; and
processing circuitry arranged to;
measure an interference power level within the unlicensed channel;
determine proximity of the UE to the eNB;
determine a transmit power level for a downlink transmission using the unlicensed channel from the eNB to the UE based on the interference power level;
schedule the downlink transmission to the UE dependent on the proximity; and
configure the transceiver to transmit the downlink transmission to the UE using the transmit power level according to the schedule.
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Accused Products
Abstract
An enhanced NodeB (eNB), user equipment (UE) and communication methods therebetween using an unlicensed channel of an unlicensed band are generally described. The eNB measures an interference power level (IPL) of the unlicensed channel at the eNB and determine a transmit power level (TPL) for a downlink transmission based on the IPL, the TPL decreasing with increasing IPL. Feedback including unlicensed channel conditions measured by the UE is used by the eNB to determine the UE-eNB proximity. The eNB determines whether to transmit the downlink transmission to the UE based on the IPL and the proximity; as the IPL increases, the eNB services increasingly proximate UEs until, when the IPL exceeds a predetermined threshold, the eNB does not service any UE using the unlicensed channel. The eNB schedules and transmits the downlink transmission to the UE using the transmit power level.
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Citations
26 Claims
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1. An apparatus of an enhanced NodeB (eNB) comprising:
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a transceiver arranged to communicate with a user equipment (UE) over an unlicensed channel in an unlicensed band; and processing circuitry arranged to; measure an interference power level within the unlicensed channel; determine proximity of the UE to the eNB; determine a transmit power level for a downlink transmission using the unlicensed channel from the eNB to the UE based on the interference power level; schedule the downlink transmission to the UE dependent on the proximity; and configure the transceiver to transmit the downlink transmission to the UE using the transmit power level according to the schedule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus of a user equipment (UE) comprising:
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a transceiver configured to communicate with an enhanced NodeB (eNB) using an unlicensed channel of an unlicensed band; and processing circuitry configured to; configure the transceiver to receive a request for feedback from the eNB; in response to the request, measure channel quality of the unlicensed channel and configure the transceiver to transmit the feedback indicating the channel quality to the UE, the feedback further comprising information to permit the eNB to determine a proximity of the UE to the eNB; and configure the transceiver to receive, dependent on the feedback, a downlink transmission from the eNB, the downlink transmission having a transmit power level dependent on an interference power level within the unlicensed channel at the eNB, reception of the downlink transmission by the UE dependent on the interference power level and proximity to the eNB as indicated by the feedback. - View Dependent Claims (18, 19, 20, 21)
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22. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of an enhanced NodeB (eNB) to configure the eNB to communicate via a transceiver with a user equipment (UE) using an unlicensed channel of an unlicensed band, the one or more processors to configure the eNB to:
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determine a transmit power level for a downlink transmission from the eNB to the UE based on an interference power level at the eNB within the unlicensed channel; determine proximity of the UE from the eNB using channel quality feedback received from the UE; determine whether or not to transmit the downlink transmission to the UE based on the interference power level and the proximity; and in response to determining to transmit the downlink transmission, transmit the downlink transmission to the UE using the transmit power level. - View Dependent Claims (23, 24)
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25. An apparatus of a user equipment (UE) comprising:
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a transceiver configured to communicate with an enhanced NodeB (eNB) using an unlicensed channel of an unlicensed band; and processing circuitry configured to; receive a request for feedback from the eNB; in response to the request, measure channel quality of the unlicensed channel and configure the transceiver to transmit the feedback indicating the channel quality to the UE; and configure the transceiver to receive, dependent on the feedback, a downlink transmission from the eNB, the downlink transmission having a transmit power level dependent on an interference power level within the unlicensed channel at the eNB, wherein the transmit power level is inversely proportional to the interference power level such that the transmit power level decreases with increasing interference power level and increases with decreasing interference power level. - View Dependent Claims (26)
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Specification