Methods and apparatus for reducing power consumption in CDMA communication device
First Claim
1. A method of reducing power consumption in a code division multiple access (CDMA) communication device, comprising:
- operating the CDMA communication device in a communication session during which information is communicated over an information channel;
identifying that there is no information to transmit by the CDMA communication device; and
during at least a portion of the communication session, causing a transmitter of the CDMA communication device to be maintained in a low power state based at least in part on the act of identifying.
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Accused Products
Abstract
Methods and apparatus for reducing power consumption of a code division multiple access (CDMA) communication device are described. The CDMA communication device operates in a communication session with a base station during which information is communicated over an information channel. At some point during the communication session, the device identifies that is has no information to transmit. In response, the device places its transmitter into a low power state and does not transmit any information that it would normally be accustomed to transmit (e.g. overhead such as idle frames) provided that forward RF link is stable. During that time, a receiver of the communication device may remain operative to receive information (e.g. transmitter power values). Provided that there is no need to transmit other necessary information, the transmitter is maintained in the low power state for a duration of time that is less than a fade time expiration of the base station. Thus, the communication device imitates a short fade during the communication session to conserve battery power.
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Citations
40 Claims
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1. A method of reducing power consumption in a code division multiple access (CDMA) communication device, comprising:
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operating the CDMA communication device in a communication session during which information is communicated over an information channel;
identifying that there is no information to transmit by the CDMA communication device; and
during at least a portion of the communication session, causing a transmitter of the CDMA communication device to be maintained in a low power state based at least in part on the act of identifying. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A code division multiple access (CDMA) communication device, comprising:
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a receiver;
a transmitter which includes a power amplifier (PA);
an antenna coupled to the receiver and the transmitter;
a processor coupled to the receiver and the transmitter;
the processor being operative to;
operate the CDMA communication device in a communication session during which information is communicated over an information channel;
identify that there is no information to transmit; and
during at least a portion of the communication session, cause the transmitter to enter into a low power state based at least in part on no information being available to transmit over the information channel. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A code division multiple access (CDMA) communication system, comprising:
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a base station operative for CDMA communication;
a portable electronic device operative for CDMA communication with the base station;
the portable electronic device being further operative to operate in a communication session during which information is communicated with the base station over an information channel;
the portable electronic device being further operative to identify during the communication session that there is no information to transmit to the base station; and
the portable electronic device being further operative to, during at least a portion of the communication session, cause a transmitter of the portable electronic device to enter into a low power state based at least in part on no information being available to transmit. - View Dependent Claims (25, 26, 27, 28)
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29. A method of reducing power consumption in a battery-operated mobile station which operates in accordance with a code division multiple access (CDMA) technique, the method comprising:
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operating in a communication session during which information is communicated with a serving base station over an information channel;
based on identifying that there is no information to transmit, powering down a transmitter power amplifier (PA) during a portion of the communication session such that no signals are transmitted to the serving base station; and
powering up the transmitter PA before an expiration of a fade timer of the serving base station. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A battery-powered code division multiple access (CDMA) mobile station, comprising:
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a CDMA receiver;
a CDMA transmitter;
a processor coupled to the CDMA receiver and the transmitter;
the processor being operative to;
operate the CDMA receiver and transmitter in a communication session during which information is communicated over an information channel;
shut down a power amplifier (PA) of the CDMA transmitter during a portion of the communication session based on identifying that there is no information to transmit; and
power up the PA before an expiration of a fade timer of a serving base station. - View Dependent Claims (38, 39, 40)
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Specification