Power management in low power wireless link
First Claim
1. A communication system, comprising:
- a first and a second communication device, each comprisingtransmit and receive units for establishing a wireless link between the devices,wherein at least the first communication device is a portable listening device and comprises a control unit for dynamically adjusting the transmit power of its transmit unit based on a measure of the quality of the link,the system is configured to use the dynamic transmit power adjusting to implement a partial power-down mode of the system, when the two communication devices are expected not to be in a normal use,the partial power-down mode at least comprises a power-down of the components related to the wireless link,the system is configured to be in an operational state or Normal mode when the first and second devices are within a Typical range of distances from each other, the Typical zone, andthe system is further configured to detect whether a transmitting device is located in a VeryClose zone, where the two devices are closer to each other than in the Typical zone and in which case the system is in a VeryClose mode and to detect whether a transmitting device is located in a VeryFar zone, where the two devices are farther away from each other than in the Typical zone and in which case the system is in a VeryFar mode.
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Abstract
The invention relates to a communication system comprising a first and a second communication device, each comprising transmit and receive units for establishing a wireless link between the devices, wherein the first device is a portable listening device. The invention further relates to a method, a data processing system and a medium. The object of the present invention is to control power consumption in a short range wireless link. The problem is solved in that at least the first communication device comprises a control unit for dynamically adjusting the transmit power of its transmit unit based on a measure of the quality of the link, wherein the system is adapted to use the dynamic transmit power regulation to implement a partial power-down mode of the system, when the two communication devices are expected NOT to be in a normal use, wherein the partial power-down mode at least comprises a power-down of the components related to the wireless link. This has the advantage of enabling an adaptation of the power consumption to the current needs. The invention may e.g. be used for wireless communication between (portable) low power devices, e.g. between a pair of hearing instruments.
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Citations
23 Claims
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1. A communication system, comprising:
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a first and a second communication device, each comprising transmit and receive units for establishing a wireless link between the devices, wherein at least the first communication device is a portable listening device and comprises a control unit for dynamically adjusting the transmit power of its transmit unit based on a measure of the quality of the link, the system is configured to use the dynamic transmit power adjusting to implement a partial power-down mode of the system, when the two communication devices are expected not to be in a normal use, the partial power-down mode at least comprises a power-down of the components related to the wireless link, the system is configured to be in an operational state or Normal mode when the first and second devices are within a Typical range of distances from each other, the Typical zone, and the system is further configured to detect whether a transmitting device is located in a VeryClose zone, where the two devices are closer to each other than in the Typical zone and in which case the system is in a VeryClose mode and to detect whether a transmitting device is located in a VeryFar zone, where the two devices are farther away from each other than in the Typical zone and in which case the system is in a VeryFar mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A communication system, comprising:
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a first and a second communication device, each comprising transmit and receive units for establishing a wireless link between the devices, wherein at least the first communication device is a portable listening device and comprises a control unit for dynamically adjusting the transmit power of its transmit unit based on a measure of the quality of the link, the system is configured to use the dynamic transmit power regulation to implement a partial mode of the system, when the two communication devices are expected not to be in a normal use, the partial power-down mode at least comprises a power-down of the components related to the wireless link, and the communication system is configured to provide a number of normal transmit power levels, between a minimum normal voltage and a maximum normal voltage to be used in a Normal mode of operation. - View Dependent Claims (13)
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14. A communication system, comprising:
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a first and a second communication device, each comprising transmit and receive units for establishing a wireless link between the devices, wherein at least the first communication device is a portable listening device and comprises a control unit for dynamically adjusting the transmit power of its transmit unit based on a measure of the quality of the link, the communication system is configured to use the dynamic transmit power regulation to implement a partial power-down mode of the system, when the two communication devices are expected not to be in a normal use, the partial power-down mode at least comprises a power-down of the components related to the wireless link, and the communication system is configured to regulate the Tx-power level with a predetermined delay after reception of a current link quality measure, the delay possibly depending on the current power level, and/or the intended future power level, and/or a value of the link quality measure and/or a rate of change of the link quality measure.
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15. A method of controlling power consumption in a wireless two-way link between two communication devices, one of which comprises a portable listening device, the method comprising:
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dynamically adjusting the transmit power of a transmitting device based on a measure of the quality of the link using the dynamic transmit power adjusting to implement a partial power-down mode of the system, when the two communication devices are expected NOT to be in a normal use, wherein the partial power-down mode at least comprises a power-down of the components related to the wireless link; and providing that current and previous modes of operation of the transmitting device are available. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A communication system, comprising:
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a first and a second communication device, each comprising a transmit unit and a receive unit for establishing a wireless link between the communication devices, wherein at least the first communication device is a portable listening device and comprises a control unit configured to dynamically adjust the transmit power of its transmit unit based on a measure of quality of the wireless link between the communication devices, the communication system is configured to use the dynamic transmit power adjusting to implement a partial power-down mode of the system, when the two communication devices are expected not to be in a normal use, the partial power-down mode comprises at least a power-down of components related to the wireless link, the communication system is configured to be in an operational state or Normal mode when the first and second devices are within a Typical range of distances from each other, the Typical zone, and the communication system is further configured to detect whether a transmitting device is located in a VeryClose zone, where the two devices are closer to each other than in the Typical zone and in which case the system is in a VeryClose mode.
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Specification