Methods and apparatuses for discovering central nodes in wireless communication system
First Claim
1. A method for operating a terminal in a wireless communication system, the method comprising:
- transmitting a probe request signal to at least one central node;
in response to transmitting the probe request signal, switching mode of the terminal to a low power mode;
receiving, from a central node among the at least one central node, a mode switch instruction signal by using a part of elements of a transceiver, in the low power mode;
in response to the mode switch instruction signal, switching the mode of the terminal from the low power mode to a normal mode; and
receiving, from the central node, a probe response signal corresponding to the probe request signal by using the elements of the transceiver, in the normal mode,wherein the probe request signal is transmitted for discovering the at least one central node.
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Accused Products
Abstract
A method and apparatus for reducing power consumption in a mobile device of a wireless communication system when discovering a central node is provided. The method for operating of a terminal for discovering at least one central node in a wireless communication system includes: generating a probe request signal and transmitting the probe request signal to at least one central node; after transmitting the probe request signal, switching from a normal mode to a low power mode and driving the terminal in the low power mode; in response to a mode switch instruction signal being received from the central node, switching the terminal from the low power mode to the normal mode; and receiving a probe response signal to the probe request signal from the central node in the normal mode.
11 Citations
32 Claims
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1. A method for operating a terminal in a wireless communication system, the method comprising:
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transmitting a probe request signal to at least one central node; in response to transmitting the probe request signal, switching mode of the terminal to a low power mode; receiving, from a central node among the at least one central node, a mode switch instruction signal by using a part of elements of a transceiver, in the low power mode; in response to the mode switch instruction signal, switching the mode of the terminal from the low power mode to a normal mode; and receiving, from the central node, a probe response signal corresponding to the probe request signal by using the elements of the transceiver, in the normal mode, wherein the probe request signal is transmitted for discovering the at least one central node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a central node of a wireless communication system, the method comprising:
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receiving, from a terminal, a probe request signal; in response to receiving the probe request signal, transmitting, to the terminal, a mode switch instruction signal, wherein the mode switch instruction signal comprises instructions to switch a mode of the terminal from a low power mode to a normal power mode and is received by the terminal using a part of elements of a transceiver in the low power mode; and transmitting, to the terminal, a probe response signal in response to the probe request signal after transmitting the mode switch instruction signal, wherein the probe request signal is received by the terminal using the elements of the transceiver in the normal power mode, and wherein the probe request signal is transmitted by the terminal, for discovering the central node. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A terminal of a wireless communication system, the terminal comprising:
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a transceiver configured to transmit a probe request signal to at least one central node; and a controller configured to switch a mode of the terminal to a low power mode in response to transmitting the probe request signal, wherein the transceiver is further configured to receive, from a central node among the at least one central node, a mode switch instruction signal by using a part of elements of the transceiver, in the low power mode, wherein the controller is further configured to switch the mode of the terminal from the low power mode to a normal mode in response to the mode switch instruction signal, wherein the transceiver is further configured to receive, from the central node, a probe response signal corresponding to the probe request signal by using the elements of the transceiver, in the normal mode, and wherein the probe request signal is transmitted for discovering the at least one central node. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A central node of a wireless communication system, the central node comprising:
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a transceiver configured to; receive, from a terminal, a probe request signal; in response to receiving the probe request signal, transmit, to the terminal, a mode switch instruction signal while the terminal is in a low power mode, wherein the mode switch instruction signal comprises instructions to switch a mode of the terminal from the low power mode to a normal power mode and is received by the terminal using a part of elements of a transceiver in the low power mode; and transmit, to the terminal, a probe response signal in response to the probe request signal after transmission of the mode switch instruction signal, wherein the probe request signal is received by the terminal using the elements of the transceiver in the normal mode, and wherein the probe request signal is transmitted by the terminal, for discovering the central node. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification