System and method for periodic ranging in sleep mode in broadband wireless access communication system
First Claim
1. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the steps of:
- reporting, by the base station. to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging in the sleep interval, when the base station detects that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval; and
receiving, by the mobile subscriber station, the report from the base station in the listening interval, transiting from the sleep mode into the awake mode, and performing the periodic ranging at the particular time point.
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Accused Products
Abstract
A method and a system for periodic ranging in a sleep mode of a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station (MSS) and a base station (BS) exists and the sleep mode in which data to be transmitted between the MS and the BS does not exist, the sleep mode having a sleep interval and a listening interval, the MSS being capable and incapable of receiving data in the listening interval and in the sleep interval, respectively. The BS reports to the MSS in a listening interval before the sleep interval that the MSS must perform the periodic ranging in the sleep interval when the BS detects that it is necessary for the MSS in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval.
63 Citations
24 Claims
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1. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the steps of:
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reporting, by the base station. to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging in the sleep interval, when the base station detects that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval; and
receiving, by the mobile subscriber station, the report from the base station in the listening interval, transiting from the sleep mode into the awake mode, and performing the periodic ranging at the particular time point.
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2. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the steps of:
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reporting, by the base station, to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging after staying in the sleep interval during a predetermined interval from a start point of the sleep interval, when the base station detects that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval; and
receiving, by the mobile subscriber station, the report from the base station in the listening interval, staying in the sleep interval during the predetermined interval, transiting from the sleep mode into the awake mode, and performing the periodic ranging. - View Dependent Claims (3)
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4. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the steps of:
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reporting, by the base station, to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging and receive control information after staying in the sleep interval during a predetermined interval from a start point of the sleep interval, when the base station detects that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval and then receive the control information; and
receiving, by the mobile subscriber station, the report from the base station in the listening interval, staying in the sleep interval during the predetermined interval, transiting from the sleep mode into the awake mode, performing the periodic ranging, and receiving the control information.
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5. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the steps of:
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detecting that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval; and
reporting to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging in the sleep interval. - View Dependent Claims (6, 7, 8)
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9. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the steps of:
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detecting that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval; and
reporting to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging after staying in the sleep interval during a predetermined interval from a start point of the sleep interval. - View Dependent Claims (10, 11)
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12. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the steps of:
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detecting that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval and then receive control information from the base station; and
reporting to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging and then receive the control information after staying in the sleep interval during a predetermined interval from a start point of the sleep interval. - View Dependent Claims (13)
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14. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the step of:
receiving a report in a listening interval before the sleep interval that it is necessary to perform together with the base station the periodic ranging at a particular time point in the sleep interval. - View Dependent Claims (15)
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16. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the step of:
receiving a report in a listening interval before the sleep interval that it is necessary to perform together with the base station the periodic ranging after staying in the sleep interval during a predetermined interval from a start point of the sleep interval. - View Dependent Claims (17, 18)
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19. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the step of:
receiving a report in a listening interval before the sleep interval that it is necessary to perform together with the base station the periodic ranging and then receive the control information after staying in the sleep interval during a predetermined interval from a start point of the sleep interval. - View Dependent Claims (20)
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21. A system for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the system comprising:
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the base station which reports to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging in the sleep interval when the base station detects that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval; and
the mobile subscriber station which receives the report from the base station in the listening interval, transits from the sleep mode into the awake mode, and then performs the periodic ranging at the particular time point together with the base station.
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22. A system for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the system comprising:
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the base station which reports to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging after staying in the sleep interval during a predetermined interval from a start point of the sleep interval when the base station detects that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval; and
the mobile subscriber station which receives the report from the base station in the listening interval, stays in the sleep interval during the predetermined interval, transits from the sleep mode into the awake mode, and performs the periodic ranging together with the base station. - View Dependent Claims (23)
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24. A system for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the system comprising:
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the base station which reports to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging and then receive control information after staying in the sleep interval during a predetermined interval from a start point of the sleep interval when the base station detects that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval and then receive the control information; and
the mobile subscriber station which receives the report from the base station in the listening interval, stays in the sleep interval during the predetermined interval, transits from the sleep mode into the awake mode, performs the periodic ranging together with the base station, and then receives the control information.
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Specification