Method for a fast state transition from a sleep mode to an awake mode in a broadband wireless access communication system
First Claim
1. A method for mode transition of a mobile subscriber station between a sleep mode and an awake mode in a broadband wireless access communication system including a base station and at least one mobile subscriber station, the mobile subscriber station having data for transmission in the awake mode and not having data to transmit in the sleep mode, the method comprising the steps of:
- receiving request signal of transition to the sleep mode including a dedicated code from the base station in the awake mode, and transiting into the sleep mode; and
detecting need of transition to the awake mode in the sleep mode, transmitting request signal of transition to the awake mode to the base station using the dedicated code.
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Accused Products
Abstract
A method for mode transition of a subscriber station between a sleep mode and an awake mode in a broadband wireless access communication system including a base station and at least the subscriber station, the subscriber station having data to transmit in the awake mode and not having data to transmit in the sleep mode is disclosed. The method includes receiving a dedicated orthogonal code from the base station and transiting into the sleep mode in the awake mode, the dedicated orthogonal code being allocated exclusively to the subscriber station; and in the sleep mode, transmitting a message to the base station by means of the dedicated orthogonal code in order to transit into the awake mode.
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Citations
36 Claims
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1. A method for mode transition of a mobile subscriber station between a sleep mode and an awake mode in a broadband wireless access communication system including a base station and at least one mobile subscriber station, the mobile subscriber station having data for transmission in the awake mode and not having data to transmit in the sleep mode, the method comprising the steps of:
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receiving request signal of transition to the sleep mode including a dedicated code from the base station in the awake mode, and transiting into the sleep mode; and
detecting need of transition to the awake mode in the sleep mode, transmitting request signal of transition to the awake mode to the base station using the dedicated code. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for allocating a dedicated orthogonal code to a mobile subscriber station by a base station in a broadband wireless access communication system including the base station and at least one mobile subscriber station, between which data to be transmitted exists in an awake mode and data to be transmitted does not exists in a sleep mode, the method comprising the steps of:
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allocating and transmitting the dedicated orthogonal code exclusively to the mobile subscriber station, in order to transit into the sleep mode;
receiving a signal transmitted using the dedicated orthogonal code allocated to the mobile subscriber station after transiting to the sleep mode; and
processing the signal based on a decision that the signal is a signal mapped to the dedicated orthogonal code for the mobile subscriber station. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for mode transition into a sleep mode according to a request of a mobile subscriber station in a broadband wireless access communication system including a base station and at least one mobile subscriber station, between which data to be transmitted exists in an awake mode and no data to be transmitted exists in the sleep mode, the method comprising the steps of:
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constructing a sleep request message when the mobile subscriber station needs to transit into the sleep mode;
simultaneously transmitting the constructed sleep request message to the base station and operating a timer for waiting reception of a sleep response message from the base station; and
confirming dedicated orthogonal code information contained in the sleep response message and transiting from the awake mode to the sleep mode when the sleep response message is received from the base station while the timer operates. - View Dependent Claims (22, 23, 24)
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25. A method for mode transition into a sleep mode according to a request of a base station in a broadband wireless access communication system including a base station and at least one mobile subscriber station, between which data to be transmitted exists in an awake mode and no data to be transmitted exists in the sleep mode, the method comprising the steps of:
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constructing a sleep request message when the base station needs to transit into the sleep mode;
simultaneously transmitting the constructed sleep request message to the mobile subscriber station and operating a timer for waiting reception of a sleep response message in response to the sleep request message of the base station;
transiting from the awake mode to the sleep mode when the sleep response message is received from the mobile subscriber station while the timer operates; and
operating a timer for a dedicated orthogonal code allocated to the mobile subscriber station after transiting into the sleep mode. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A method for mode transition into an awake mode according to a request of a mobile subscriber station in a broadband wireless access communication system including a base station and at least one mobile subscriber station, between which data to be transmitted exists in the awake mode and no data to be transmitted exists in a sleep mode, the method comprising the steps of:
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the mobile subscriber station constructing a mobile subscriber station traffic indication message when the mobile subscriber station needs to transit into the awake mode due to detection of generation of packet data to be transmitted;
simultaneously transmitting the mobile subscriber station traffic indication message and operating a timer when the mobile subscriber station can achieve fast access according to a contention-free scheme after constructing the mobile subscriber station traffic indication message;
transiting from the sleep mode to the awake mode and starting transmission of the packet data when the subscriber station traffic indication message is received while the timer operates. - View Dependent Claims (32)
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33. A method for mode transition into an awake mode according to a request of a base station in a broadband wireless access communication system including a base station and at least one mobile subscriber station, between which data to be transmitted exists in the awake mode and data to be transmitted does not exist in a sleep mode, the method comprising the steps of:
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constructing a base station traffic indication message when the base station needs to transit into the awake mode due to detection of generation of packet data to be transmitted;
simultaneously broadcasting the base station traffic indication message and operating a timer for waiting for reception of a traffic confirmation message, after constructing the base station traffic indication message;
transiting from the sleep mode to the awake mode and starting transmission of the packet data when the traffic confirmation message is received while the timer operates. - View Dependent Claims (34, 35, 36)
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Specification