Intermittent shutoff of RF circuitry in wireless communication terminals
First Claim
1. A method for communication, comprising:
- in a receiver, receiving over a wireless communication channel a signal that carries at least a sequence of reference signals and a control channel;
computing a first estimate of a response of the wireless communication channel using a first estimation process that estimates the response based on reference signals received over a first time interval of the sequence of the reference signals, and decoding the control channel based on the first estimate;
upon identifying, based on the decoded control channel, a time period during which no data channel is to be addressed to the receiver, shutting down circuitry of the receiver for at least part of the identified time period; and
computing a second estimate of the response using a second estimation process that estimates the response based on reference signals received over a second time interval of the same sequence of the reference signals, longer than the first time interval, and decoding a data channel that is addressed to the receiver based on the second estimate.
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Accused Products
Abstract
A method for communication in a receiver (20) includes receiving over a wireless communication channel a signal that carries at least a control channel. A first estimate of a response of the wireless communication channel is computed using a first estimation process having a first latency, and the control channel is decoded based on the first estimate. Upon identifying, based on the decoded control channel, a time period during which no data channel is to be addressed to the receiver, circuitry (24) of the receiver is shut down for at least part of the identified time period. A second estimate of the response is computed using a second estimation process having a second latency, higher than the first latency, and a data channel that is addressed to the receiver is decoded based on the second estimate.
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Citations
14 Claims
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1. A method for communication, comprising:
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in a receiver, receiving over a wireless communication channel a signal that carries at least a sequence of reference signals and a control channel; computing a first estimate of a response of the wireless communication channel using a first estimation process that estimates the response based on reference signals received over a first time interval of the sequence of the reference signals, and decoding the control channel based on the first estimate; upon identifying, based on the decoded control channel, a time period during which no data channel is to be addressed to the receiver, shutting down circuitry of the receiver for at least part of the identified time period; and computing a second estimate of the response using a second estimation process that estimates the response based on reference signals received over a second time interval of the same sequence of the reference signals, longer than the first time interval, and decoding a data channel that is addressed to the receiver based on the second estimate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication apparatus, comprising:
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a receiver, which is configured to receive over a wireless communication channel a signal that carries at least a sequence of reference signals and a control channel; and processing circuitry, which is configured to compute a first estimate of a response of the wireless communication channel using a first estimation process that estimates the response based on reference signals received over a first time interval of the sequence of the reference signals, to decode the control channel based on the first estimate, to shut-down, upon identifying based on the decoded control channel a time period during which no data channel is to be addressed to the receiver, circuitry of the receiver for at least part of the identified time period, to compute a second estimate of the response using a second estimation process that estimates the response based on reference signals received over a second time interval of the same sequence of the reference signals, longer than the first time interval, and to decode a data channel that is addressed to the receiver based on the second estimate.
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8. A method for communication, comprising:
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in a receiver, receiving a signal that carries a sequence of frames, each frame comprising at least a control channel followed by a data zone; decoding the received signal out-of-order, such that decoding of the control channel of a second frame in the same single sequence of the frames begins before a data channel in the data zone of a first frame in the same single sequence, which precedes the second frame in the same single sequence, is fully decoded, even though the data channel in the first frame precedes the control channel in the second frame; identifying, based on the decoded control channel of the second frame, a time period during which no data is to be addressed to the receiver in the data zone of the second frame; and shutting down Radio-Frequency (RF) circuitry of the receiver for at least part of the identified time period. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A communication apparatus, comprising:
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a receiver, which is configured to receive a signal that carries a sequence of frames, each frame comprising at least a control channel followed by a data zone; and processing circuitry, which is configured to decode the received signal out-of-order, such that decoding of the control channel of a second frame in the same single sequence of the frames begins before a data channel in the data zone of a first frame in the same single sequence, which precedes the second frame in the same single sequence, is fully decoded, even though the data channel in the first frame precedes the control channel in the second frame, to identify, based on the decoded control channel of the second frame, a time period during which no data is to be addressed to the apparatus in the data zone of the second frame, and to shut down Radio-Frequency (RF) circuitry of the receiver for at least part of the identified time period.
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Specification