Method and apparatus for waking device from power save mode
First Claim
1. A method for switching a second device from a power save mode to an active mode by a first device, the method comprising:
- transmitting, by the first device, a magic packet through a predetermined channel to the second device, which operates in the power save mode by repeating a doze state and an awake state periodically according to a predetermined period of time, for notifying the second device to switch to the active mode, wherein the magic packet includes contents of a command for switching a value of a power management field which is a subfield of a frame control field of the second device receiving the magic packet; and
retransmitting the magic packet to the second device through the predetermined channel if a response to the magic packet has not been received from the second device and a predetermined time has not elapsed after transmitting the magic packet through the predetermined channel.
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Accused Products
Abstract
A method for waking a device from a power save mode to an active mode includes: transmitting, by a first device, a magic packet through a predetermined channel to a second device, which operates in the power save mode by repeating a doze state and an awake state according to a predetermined period of time, for notifying the second device to switch to the active mode; and retransmitting the magic packet to the second device through the predetermined channel if a response to the magic packet has not been received from the second device and a predetermined time has not elapsed after transmitting the magic packet through the predetermined channel.
17 Citations
25 Claims
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1. A method for switching a second device from a power save mode to an active mode by a first device, the method comprising:
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transmitting, by the first device, a magic packet through a predetermined channel to the second device, which operates in the power save mode by repeating a doze state and an awake state periodically according to a predetermined period of time, for notifying the second device to switch to the active mode, wherein the magic packet includes contents of a command for switching a value of a power management field which is a subfield of a frame control field of the second device receiving the magic packet; and retransmitting the magic packet to the second device through the predetermined channel if a response to the magic packet has not been received from the second device and a predetermined time has not elapsed after transmitting the magic packet through the predetermined channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for switching from a power save mode to an active mode by a second device communicating with a first device, the method comprising:
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receiving, from the first device, a magic packet for notifying the second device to switch to the active mode when the second device operating in the power save mode by repeating a doze state and an awake state is in the awake state, wherein the magic packet includes contents of a command for switching a value of a power management field which is a subfield of a frame control field of the second device receiving the magic packet; and switching to the active mode upon receiving the magic packet. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. An apparatus for switching a peer device from a power save mode to an active mode, the apparatus comprising:
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a transmitter for transmitting through a predetermined channel a magic packet for notifying the peer device, which operates in the power save mode by repeating a doze state and an awake state periodically according to a predetermined period of time to switch to the active mode, wherein the magic packet includes contents of a command for switching a value of a power management field which is a subfield of a frame control field of the peer device receiving the magic packet; and a receiver for receiving a response to the magic packet from the peer device, wherein the transmitter retransmits the magic packet to the peer device through the predetermined channel if a response to the magic packet has not been received from the peer device and a predetermined time has not elapsed after transmitting the magic packet through the predetermined channel.
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25. An apparatus for switching a peer device from a power save mode to an active mode, the apparatus comprising:
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a receiver for receiving a magic packet for notifying the peer device to switch to the active mode when the peer device operating in the power save mode by repeating a doze state and an awake state is in the awake state, wherein the magic packet includes contents of a command for switching a value of a power management field which is a subfield of a frame control field of the peer device receiving the magic packet; and a switching unit for switching to the active mode upon receiving the magic packet.
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Specification