Adaptive control of RF low power modes in a multi-rate wireless system using MCS value
First Claim
1. A method of adaptive power control for a wireless communication device, comprising:
- receiving control information for incoming data in a transmission frame while in a first power mode of the device, the control information including a modulation and coding scheme (MCS) value;
adjusting for phase error before switching to a second power mode to mitigate phase error caused by switching, wherein the adjusting comprises implementing an MCS rate for a transition point between the first power mode and the second power mode, the implemented MCS rate being lower than an MCS rate associated with the second power mode and having error vector magnitude (EVM) constraints that mitigate phase error caused by switching; and
adaptively switching to the second power mode of the device during the transmission frame, wherein the switching is based at least in part on the received MCS value and a bandwidth mode for reception.
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Accused Products
Abstract
Methods, systems, and devices are described for power conservation in a wireless communications system. In embodiments, power conservation may be achieved by adaptively controlling power modes of a wireless communication device, using a modulation and coding scheme (MCS) value as a factor for guidance. According to one aspect, the device may be in a reception mode. While in a first power mode, the device may receive control information for incoming data that is being transmitted via a transmission frame. The control information may be located in a first portion of the frame with the data following in a second portion of the frame. The control information may include or otherwise indicate an MCS value corresponding to the MCS applied to the incoming data. Based on the MCS value, the device may be adaptively switched to a second power mode for receiving the incoming data.
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Citations
27 Claims
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1. A method of adaptive power control for a wireless communication device, comprising:
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receiving control information for incoming data in a transmission frame while in a first power mode of the device, the control information including a modulation and coding scheme (MCS) value; adjusting for phase error before switching to a second power mode to mitigate phase error caused by switching, wherein the adjusting comprises implementing an MCS rate for a transition point between the first power mode and the second power mode, the implemented MCS rate being lower than an MCS rate associated with the second power mode and having error vector magnitude (EVM) constraints that mitigate phase error caused by switching; and adaptively switching to the second power mode of the device during the transmission frame, wherein the switching is based at least in part on the received MCS value and a bandwidth mode for reception. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20)
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17. A wireless communication device, comprising:
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a receiver configured to receive control information for incoming data in a transmission frame while in a first power mode of the device, the control information including a modulation and coding scheme (MCS) value; and a power controller configured to; adjust for phase error before switching to a second power mode to mitigate phase error caused by switching, wherein the adjusting comprises implementing an MCS rate for a transition point between the first power mode and the second power mode, the implemented MCS rate being lower than an MCS rate associated with the second power mode and having error vector magnitude (EVM) constraints that mitigate phase error caused by switching; and adaptively switch to the second power mode of the device during the transmission frame, wherein the switching is based at least in part on the received MCS value and a bandwidth mode for reception. - View Dependent Claims (18, 21)
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22. An apparatus for adaptive power control for a wireless communication device, comprising:
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means for receiving control information for incoming data in a transmission frame while in a first power mode of the device, the control information including a modulation and coding scheme (MCS) value; means for adjusting for phase error before switching to a second power mode to mitigate phase error caused by switching, wherein the adjusting comprises implementing an MCS rate for a transition point between the first power mode and the second power mode, the implemented MCS rate being lower than an MCS rate associated with the second power mode and having error vector magnitude (EVM) constraints that mitigate phase error caused by switching; and means for adaptively switching to the second power mode of the device during the transmission frame, wherein the switching is based at least in part on the received MCS value and a bandwidth mode for reception. - View Dependent Claims (23, 24, 25, 26)
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27. A computer program product, comprising:
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a non-transitory computer-readable medium including instructions stored thereon, the instructions being executable by a computer to; receive control information for incoming data in a transmission frame while in a first power mode of the device, the control information including a modulation and coding scheme (MCS) value; adjust for phase error before switching to a second power mode to mitigate phase error caused by switching, wherein the adjusting comprises implementing an MCS rate for a transition point between the first power mode and the second power mode, the implemented MCS rate being lower than an MCS rate associated with the second power mode and having error vector magnitude (EVM) constraints that mitigate phase error caused by switching; and adaptively switch to the second power mode of the device during the transmission frame, wherein the switching is based at least in part on the received MCS value and a bandwidth mode for reception.
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Specification