Apparatus and method for saving power of femto base station in wireless communication system
First Claim
Patent Images
1. A method for transitioning to an operation mode of a femto base station in a wireless communication system, the method comprising:
- in a sleep mode, in which the femto base station aborts transmissions, confirming whether operation transition request information is received from at least one terminal; and
transitioning to an active mode, when receiving the operation transition request information from the terminal.
1 Assignment
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Accused Products
Abstract
An apparatus and a method for transiting an operation mode of a femto base station in a wireless communication system are provided. The method includes, in a sleep mode, confirming whether operation transition request information is received from at least one terminal; and when receiving the operation transition request information from the terminal, entering an active mode. Thus, the power consumption of the femto base station can be reduced and the interference caused by the operation of the femto base station can be mitigated.
71 Citations
29 Claims
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1. A method for transitioning to an operation mode of a femto base station in a wireless communication system, the method comprising:
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in a sleep mode, in which the femto base station aborts transmissions, confirming whether operation transition request information is received from at least one terminal; and transitioning to an active mode, when receiving the operation transition request information from the terminal. - View Dependent Claims (2, 3, 4)
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5. A method for transitioning to an mode of a femto base station in a wireless communication system, the method comprising
in a sleep mode, confirming whether operation transition request information is received from at least one terminal; -
transitioning an active mode, when receiving the operation transition request information from the terminal transitioning to the sleep mode, when there exist no accessed terminal and no accessible terminal within a reference time, wherein the transiting to the sleep mode comprises; requesting a sleep mode transition to the macro base station, when there exist no accessed terminal and no accessible terminal within the reference time; and transitioning to the sleep mode, when receiving a response signal of the sleep mode transition request from the macro base station. - View Dependent Claims (6)
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7. A method for controlling an operation mode transition of a femto base station at a macro base station in a wireless communication system, the method comprising:
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acquiring location information of at least one femto base station in a macro cell and at least one terminal in the macro cell; confirming an operation mode of the femto base station, when there exists a terminal traveling in a cell of the femto base station or adjacent to the cell of the femto base station among the at least one terminal; and when the femto base station is in a sleep mode, instructing the terminal traveling in the cell of the femto base station or adjacent to the cell of the femto base station, to transit the operation mode of the femto base station. - View Dependent Claims (8, 9, 10, 11)
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12. A method for controlling an operation mode transition of a femto base station at a terminal in a wireless communication system, the method comprising:
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determining whether to transit the femto base station of a sleep mode, in which the femto base station aborts transmissions, to an active mode; and transmitting an operation transition request information to a corresponding femto base station, when determining to transition to the femto base station to the active mode. - View Dependent Claims (13)
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14. A method for controlling an operation mode transition of a femto base station at a terminal in a wireless communication system, the method comprising:
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determining whether to transit the femto base station of a sleep mode to an active mode according to whether a signal instructing the active mode transition of the femto base station is received from a macro base station; and transmitting an operation transition request information to a corresponding femto base station, when determining to transition the femto base station to the active mode.
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15. A method for controlling an operation mode transition of a femto base station at a terminal in a wireless communication system, the method comprising:
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determining whether to transit the femto base station of a sleep mode to an active mode by considering input of an active mode transition key or a type of a program executed; and transmitting an operation transition request information to a corresponding femto base station, when determining to transition the femto base station to the active mode.
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16. An apparatus of a femto base station for transiting an operation mode in a wireless communication system, the apparatus comprising:
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a receiver configured to receive a signal using a radio resource; a transmitter configured to send a signal using a radio resource; and a controller configured to transition the apparatus to an active mode when an operation transition request information is received from at least one terminal through the receiver in a sleep mode in which the transmitter aborts transmissions. - View Dependent Claims (17, 18, 19, 20)
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21. An apparatus of a femto base station for transiting an operation mode in a wireless communication system, the apparatus comprising:
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a receiver configured to receive a signal using a radio resource; a transmitter configured to send a signal using a radio resource; and a controller configured to transit to an active mode when operation transition request information is received from at least one terminal through the receiver in a sleep mode, wherein the controller, after transitioning to the active mode, when there exist no accessed terminal and no accessible terminal over a reference time, controls transition to the sleep mode and wherein the transmitter, after the controller determines to transition to the sleep mode, sends a sleep mode transition request message, which comprises at least one of uplink resource information, transmission timing information, transmit power information, and dedication access preamble information to be used for the terminal to transmit the operation transition request information to the femto base station of the sleep mode, to the macro base station under the control of the controller.
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22. An apparatus of a macro base station for controlling an operation mode transition of a femto base station in a wireless communication system, the apparatus comprising:
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a location information confirmer configured to acquire location information of at least one femto base station in a macro cell and at least one terminal in the macro cell; a location comparator configured to compare the location information of the femto base station with the location information of the terminal; a controller configured to, when there exists a terminal traveling in a cell of the femto base station or adjacent to the cell of the femto base station among the at least one terminal, instruct an operation mode transition of the femto base station to the terminal; and a transmitter configured to send operation mode transition indication message of the femto base station to the terminal under the control of the controller. - View Dependent Claims (23, 24, 25)
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26. An apparatus of a terminal for controlling an operation mode transition of a femto base station in a wireless communication system, the apparatus comprising:
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a receiver configured to receive a signal; a controller configured to determine whether to transit the femto base station of a sleep mode, in which the femto base station aborts transmissions, to an active mode; and a transmitter configured to, when the controller determines to transition the femto base station to the active mode, transmit an operation transition request information to a corresponding femto base station. - View Dependent Claims (27)
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28. An apparatus of a terminal for controlling an operation mode transition of a femto base station in a wireless communication system, the apparatus comprising
a receiver configured to receive a signal; -
a controller configured to determine whether to transit the femto base station of a sleep mode to an active mode, wherein the controller determines whether to transition the femto base station to the active mode or not according to whether a signal instructing the active mode transition of the femto base station is received from a macro base station through the receiver; and a transmitter configured to, when the controller determines to transition the femto base station to the active mode, transmit an operation transition request information to a corresponding femto base station.
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29. An apparatus of a terminal for controlling an operation mode transition of a femto base station in a wireless communication system, the apparatus comprising:
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a receiver configured to receive a signal; a controller configured to determine whether to transition the femto base station of a sleep mode to an active mode, wherein the controller determines whether to transit the femto base station to the active mode or not by considering input of an active mode transition key or a type of a program executed; and a transmitter configured to when the controller determines to transition the femto base station to the active mode, transmit an operation transition request information to a corresponding femto base station.
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Specification