Method and system for controlling sleep mode in broadband wireless access communication system
First Claim
1. A method for controlling a sleep mode including sleep intervals and awake intervals in a broadband wireless access communication system having a base station and subscriber terminals, the method comprising the steps of:
- grouping first subscriber terminals, which request a sleep operation to the base station, into several groups for controlling the sleep mode;
establishing each point of time for transmitting a paging message to each group different from each other within a unit time slot for controlling the sleep mode; and
managing a sleep interval scheduling table, which manages sleep interval scheduling information of each first subscriber terminal, according to each group in response to a request for a state transition into the sleep mode of the first subscriber terminals, wherein the grouping step is performed with respect to the subscriber terminals in an order of requests of the subscriber terminals for the sleep operation to the base station such that each group includes a predetermined number of the first subscriber terminals and the number of the groups increases whenever the number of the first subscriber terminals exceeds the predetermined number.
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Accused Products
Abstract
A method and a system is disclosed for controlling a sleep mode in broadband wireless access communication system. The subscriber terminals are managed by grouping the subscriber terminals in a broadband wireless access communication system, so an efficiency for controlling the sleep mode of the broadband wireless access communication system may increase. A further advantage is provided that each point of time for transmitting a paging message of each group is established differently from each other within a unit time slot for controlling the sleep mode, such that subscriber terminals are managed according to groups. Another advantage is provided that the base station can previously find subscriber terminals awaking at each point of time for transmission the paging message of each other from among subscriber terminals having the sleep mode, so an efficiency for controlling the sleep mode of the broadband wireless access communication system may increase.
150 Citations
26 Claims
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1. A method for controlling a sleep mode including sleep intervals and awake intervals in a broadband wireless access communication system having a base station and subscriber terminals, the method comprising the steps of:
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grouping first subscriber terminals, which request a sleep operation to the base station, into several groups for controlling the sleep mode; establishing each point of time for transmitting a paging message to each group different from each other within a unit time slot for controlling the sleep mode; and managing a sleep interval scheduling table, which manages sleep interval scheduling information of each first subscriber terminal, according to each group in response to a request for a state transition into the sleep mode of the first subscriber terminals, wherein the grouping step is performed with respect to the subscriber terminals in an order of requests of the subscriber terminals for the sleep operation to the base station such that each group includes a predetermined number of the first subscriber terminals and the number of the groups increases whenever the number of the first subscriber terminals exceeds the predetermined number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling a sleep mode including sleep intervals and awake intervals in a broadband wireless access communication system having a base station and subscriber terminals, the system comprising:
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a grouping part for grouping first subscriber terminals subject to a sleep mode control into predetermined groups; a management part of a paging message transmission slot of each group for establishing and for managing each different point of time for transmitting a paging message to each group within a unit time slot for controlling a sleep mode; a transmission/reception part for receiving a sleep request message which represents a request for a state transition into the sleep mode from the subscriber terminals and for transmitting a response message to the first subscriber terminals in response to the request for the state transition into the sleep mode; and a management part of a sleep interval scheduling table of each group for managing the sleep interval scheduling table of each of the first subscriber terminals in response to the request for the state transition, wherein the grouping part performs grouping with respect to the first subscriber terminals in an order of requests of the first subscriber terminals for the sleep operation to the base station such that each group includes a predetermined number of the subscriber terminals and increases the number of the groups whenever the subscriber terminals performing the sleep operation increase by the predetermined number of the subscriber terminals. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for controlling a sleep mode including sleep intervals and awake intervals in a broadband wireless access communication system having a base station and subscriber terminals, the method comprising the steps of:
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grouping first subscriber terminals, which request a sleep operation to the base station, into several groups for controlling the sleep mode; establishing each point of time for transmitting a paging message to each group different from each other within a unit time slot for controlling the sleep mode; managing a sleep interval scheduling table, which manages sleep interval scheduling information of each first subscriber terminal, according to each group in response to a request for a state transition into the sleep mode of the first subscriber terminals; discriminating second subscriber terminals awaking at a corresponding point of time for transmitting the paging message to a corresponding group from among the first subscriber terminals on a basis of the sleep interval scheduling table; adding subscriber terminal identification numbers (BCIDs) of third subscriber terminals to which packet data is to be transmitted and which are selected from the second subscriber terminals to which the paging message are transmitted, to the paging message and transmitting the paging message; and releasing the sleep mode of the third subscriber terminals which receive the paging message. - View Dependent Claims (22)
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23. A system for controlling a sleep mode including sleep intervals and awake intervals in a broadband wireless access communication system having a base station and subscriber terminals, the system comprising:
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a grouping part for grouping first subscriber terminals subject to a sleep mode control into predetermined groups; a management part of a paging message transmission slot of each group for establishing and for managing each different point of time for transmitting a paging message to each group within a unit time slot for controlling a sleep mode; a transmission/reception part for receiving a sleep request message which represents a request for a state transition into the sleep mode from the subscriber terminals and for transmitting a response message to the first subscriber terminals in response to the request for the state transition into the sleep mode; a management part of a sleep interval scheduling table of each group for managing the sleep interval scheduling table of each of the first subscriber terminals in response to the request for the state transition; a paging message formation part for discriminating second subscriber terminals awaking at a corresponding point of time for transmitting the paging message of a corresponding group from the first subscriber terminals based on the sleep interval scheduling table, and for adding identification numbers (BCIDs) of third subscriber terminals, to which packet data are transmitted and which are selected from among the second subscriber terminals, to the paging message and transmitting the paging message to the corresponding group, wherein the point of time for transmitting the paging message of the group is managed by the management part of the paging message transmission slot of each group; and a paging message transmission part for receiving information about each point of time for transmitting the paging message of each group from the management part of the paging message transmission slot of each group, thereby transmitting the paging message formed by the paging message formation part based on such information. - View Dependent Claims (24)
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25. A system for controlling a sleep mode including sleep intervals and awake intervals in a broadband wireless access communication system having a base station and subscriber terminals, the system comprising:
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a grouping part for grouping first subscriber terminals subject to a sleep mode control into predetermined groups; a management part of a paging message transmission slot of each group for establishing and for managing each different point of time for transmitting a paging message to each group within a unit time slot for controlling a sleep mode; a transmission/reception part for receiving a sleep request message which represents a request for a state transition into the sleep mode from the subscriber terminals and for transmitting a response message to the first subscriber terminals in response to the request for the state transition into the sleep mode; and a management part of a sleep interval scheduling table of each group for managing the sleep interval scheduling table of each of the first subscriber terminals in response to the request for the state transition, wherein the management part of the sleep interval scheduling table of each group determines a minimum time slot, a maximum time slot, and a listening interval of the first subscriber terminal in response to a request for the state transition into the sleep mode, determines state information of each unit time slot of each first subscriber terminal on a basis of the determined minimum time slot, the determined maximum time slot, and the determined listening interval, and registers the sleep interval scheduling information which includes the minimum time slot, the maximum time slot, the listening interval, and state information of each unit time slot of the first subscriber terminal together with identification information of the first subscriber terminal in the sleep interval scheduling table. - View Dependent Claims (26)
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Specification