Method and arrangement for reducing power consumption in a mobile communication network
First Claim
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1. A method of operating a wireless communication device in a wireless communication system, the method comprising:
- transitioning from a first mode to a second mode, wherein the wireless communication device does not listen for downlink data transmissions while operating in the first mode, and wherein the wireless communication device listens for downlink data transmissions while operating in the second mode;
while the wireless communication device is operating in the second mode, receiving one or more packets from a transmitter;
in response to determining that a packet has been received in error;
transmitting a negative acknowledgement to the transmitter; and
adjusting a length of time for the second mode based, at least in part, on a time period associated with retransmitting the packet received in error; and
transitioning from the second mode to the first mode based, at least in part, on the adjusted length of time for the second mode.
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Abstract
The invention relates to a method and an arrangement for reducing power consumption of a receiver in a mobile communication network comprising a sender transmitting packet data on a downlink channel to one or more receivers over a radio interface. Inactive time instants and listening time instants are defined according to provided rules. The receiver is arranged to listen for information from the sender during the listening time instants and to sleep during the inactive time instants. Thus, less power will be consumed during the inactive time instants.
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Citations
22 Claims
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1. A method of operating a wireless communication device in a wireless communication system, the method comprising:
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transitioning from a first mode to a second mode, wherein the wireless communication device does not listen for downlink data transmissions while operating in the first mode, and wherein the wireless communication device listens for downlink data transmissions while operating in the second mode; while the wireless communication device is operating in the second mode, receiving one or more packets from a transmitter; in response to determining that a packet has been received in error; transmitting a negative acknowledgement to the transmitter; and adjusting a length of time for the second mode based, at least in part, on a time period associated with retransmitting the packet received in error; and transitioning from the second mode to the first mode based, at least in part, on the adjusted length of time for the second mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wireless communication device operating in a wireless communication system, the wireless communication device comprising:
processing circuitry configured to; transition from a first mode to a second mode, wherein the wireless communication device does not listen for downlink data transmissions while operating in the first mode, and wherein the wireless communication device listens for downlink data transmissions while operating in the second mode; while operating in the second mode, receive one or more packets from a transmitter; in response to determining that a packet has been received in error; transmit a negative acknowledgement to the transmitter; and adjust a length of time for the second mode based, at least in part, on a time period associated with retransmitting the packet received in error; and transition from the second mode to the first mode based, at least in part, on the adjusted length of time for the second mode. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
Specification