System and method for handover capable of minimizing service delay in broadband wireless access communication system
First Claim
1. A method for performing a handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a target BS to which the MS hands over, the method comprising the steps of:
- detecting that the handover from the serving BS to the target BS is necessary; and
transmitting a request to the serving BS in order to perform portions of a handover process prior to the handover to the target BS.
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Accused Products
Abstract
Disclosed is a method and a system for performing a handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a target BS to which the MS hands over. The method comprises the steps of detecting that the handover from the serving BS to the target BS is necessary; and transmitting a request to the serving BS in order to perform portions of a handover process prior to the handover to the target BS.
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Citations
49 Claims
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1. A method for performing a handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a target BS to which the MS hands over, the method comprising the steps of:
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detecting that the handover from the serving BS to the target BS is necessary; and
transmitting a request to the serving BS in order to perform portions of a handover process prior to the handover to the target BS. - View Dependent Claims (2, 3)
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4. A method for handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a target BS to which the MS hands over, the method comprising the steps of:
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receiving a request from the MS, in which the request notifies that a part of handover process will be performed prior to the handover as the handover from the serving BS to the target BS is required; and
transmitting a response message in response to the request, said response message includes information related to a time interval during which the part of the handover processes is performed. - View Dependent Claims (5, 6, 7)
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8. A method for handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a target BS to which the MS hands over, the method comprising the steps of:
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receiving from the serving BS a message, which notifies that a part of handover process will be performed prior to the handover, when the MS needs to be handed over from the serving BS to the target BS; and
transmitting a notification response message including information related to services available for the MS. - View Dependent Claims (9, 10, 11)
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12. A method for handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a target BS to which the MS hands over, the method comprising the steps of:
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transmitting a request from the MS to the serving BS in order to be allowed the MS to perform a part of handover process prior to the handover to the target BS;
transmitting a notification message from the serving BS to the target BS as the serving BS receives the request from the MS, in which the notification message notifies that the MS will perform the part of the handover processes prior to the handover and includes information related to a time interval during which the part of the handover processes is performed;
transmitting a notification response message from the target BS to the serving BS, in which the notification response message includes information related to services available for the MS; and
transmitting from the serving BS a response message in response to the request of the MS, said response message includes information related to the services available for the MS included in the notification response message and the time interval. - View Dependent Claims (13, 14)
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15. A method for handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a plurality of neighbor BSs different from the serving BS, the method comprising the steps of:
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detecting that the handover from the serving BS to a target BS, which is selected from the neighbor BSs, is necessary; and
transmitting a request to the serving BS by adding information related to a number of the neighbor BSs selectable for the target to perform a part of handover process prior to the handover to the target BS. - View Dependent Claims (16, 17)
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18. A method for handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a plurality of neighbor BSs different from the serving BS, the method comprising the steps of:
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receiving a request from the MS, in which the request notifies that a part of handover process will be performed prior to the handover as the handover from the serving BS to a target BS selected from the neighbor BSs is required, said request includes information related to a number of the neighbor BSs selectable for the target BS; and
selecting a neighbor BS from the number of neighbor BSs for allowing the MS to perform the part of the handover process, and transmitting a response message in response to the request, said response message includes information related to a time interval during which the part of the handover processes is performed and the selected neighbor BS. - View Dependent Claims (19, 20, 21, 22)
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23. A method for handover capable of minimizing a service delay in a broadband wireless access communication system including a mobile station (MS), a serving base station (BS) providing services to the MS, and a plurality of neighbor BSs different from the serving BS, the method comprising the steps of:
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transmitting a request from the MS to the serving BS by adding information related to a number of the neighbor BSs selectable for a target BS to the request in order to be allowed the MS to perform a part of handover process prior to the handover to the target BS, if the MS determines that the handover from the serving BS to the target BS, which is selected from the neighbor BSs, is necessary;
transmitting a notification message from the serving BS to the number of neighbor BSs as the serving BS receives the request, in which the message notifies that the MS will perform the part of the handover process prior to the handover and includes information related to a time interval during which the part of the handover process is performed;
transmitting a notification response message from the number of neighbor BSs to the serving BS, in which the notification response message includes information related to services available for the MS; and
selecting a neighbor BS from the number of neighbor BSs by the serving BS in order to allow the MS to perform the part of the handover process in relation to the selected neighbor BS and transmitting from the serving BS a response message in response to the request of the MS, said response message includes information related to the time interval and the selected neighbor BS. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A handover system capable of minimizing a service delay in a broadband wireless access communication system, the handover system comprising:
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a mobile station (MS) for transmitting a request to a serving BS providing services to the MS in order to perform a part of handover process prior to the handover to a target BS if the MS determines that the handover from the serving BS to the target BS is necessary;
a serving BS for transmitting a notification message to the target BS as the serving BS receives the request from the MS, in which the notification message notifies that the MS will perform the part of the handover process prior to the handover and includes information related to a time interval during which the part of the handover process is performed, and transmitting a response message in response to the request of the MS if the serving BS receives a notification response message from the target BS, in which the notification response message includes information related to services available for the MS and the response message includes information related to the services available for the MS included in the notification response message and the time interval; and
a target BS for transmitting the notification response message to the serving BS. - View Dependent Claims (30, 31)
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32. A handover system capable of minimizing a service delay in a broadband wireless access communication system, the handover system comprising:
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a mobile station (MS) for transmitting a request to a serving BS by adding information related to a number of neighbor BSs selectable for a target BS to the request in order to perform a part of handover process prior to the handover to a target BS, if the MS determines that the handover from the serving BS to the target BS, which is selected from the neighbor BSs, is necessary;
a serving BS for transmitting a notification message to the number of neighbor BSs as the serving BS receives the request, in which the notification message notifies that the MS will perform the part of the handover process prior to the handover and includes information related to a time interval during which the part of the handover processes is performed, selecting a neighbor BS from the number of neighbor BSs in order to allow the MS to perform the part of the handover process in relation to the selected neighbor BS if the serving BS receives a notification response message from the number of neighbor BSs, and transmitting a response message in response to the request of the MS, said response message includes information related to the time interval and the selected neighbor BS; and
a number of neighbor BSs transmitting the notification response message to the serving BS, said notification response message includes information related to services available for the MS. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A method of minimizing service delay for a handover process with a mobile station (MS) and a target base station (BS) in a broadband wireless access communication system including the MS, a serving BS providing services to the MS, and the target BS, the MS hands over from the serving BS to the target BS, the method comprising the steps of:
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transmitting from the MS to the serving BS a message including a field representing information related to an association operation required for the handover process; and
transmitting from the serving BS to the MS a message including a response field for the association operation information and a field representing an association duration. - View Dependent Claims (39, 40, 41, 42)
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43. A method of minimizing service delay for a handover process with a mobile station (MS) and a target base station (BS) in a broadband wireless access communication system including the MS, a serving BS providing services to the MS, and the target BS, the MS hands over from the serving BS to the target BS, the method comprising the steps of:
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transmitting to the serving BS a message including a field representing information related to an association operation required for the handover process; and
receiving from the serving BS a message including a response field for the association operation information and a field representing an association duration. - View Dependent Claims (44, 45)
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46. A method of minimizing service delay for a handover process with a mobile station (MS) and a target base station (BS) in a broadband wireless access communication system including the MS, a serving BS providing services to the MS, and the target BS, the MS hands over from the serving BS to the target BS, the method comprising the steps of:
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receiving from the a message including a field representing information related to an association operation required for the handover process; and
transmitting to the MS a message including a response field for the association operation information and a field representing an association duration. - View Dependent Claims (47, 48, 49)
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Specification