Device for providing hand-off quality of service of inter-access systems and method thereof
First Claim
1. An apparatus for managing a quality of service (QoS) of a vertical hand-off operation of heterogeneous access systems, the apparatus comprising:
- a QoS negotiation managing unit for negotiating the QoS according to a vertical hand-off request between a serving access system and a target access system of a terminal, wherein the serving access system and the target access system are heterogeneous access systems and the hand-off request is a request for a vertical hand-off for transferring the connection between the terminal and the serving access system to between the terminal and the target access system in order to provide a service provided from the serving access system through the target access system; and
an access system interface unit for requesting a QoS context for negotiating the QoS from the serving access system of the terminal in order to receive the requested QoS context, the QoS context being associated with QoS for the connection between the terminal and the serving access system established prior to the vertical hand-off, and for transmitting QoS information negotiated by the QoS negotiation managing unit to the target access system of the terminal for the connection transferred to between the terminal and the target access system.
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Accused Products
Abstract
The present invention relates to a device for providing a quality of service (QoS) of a hand-off between heterogeneous networks, and a method thereof. According to the present invention, the device includes a device for performing a QoS management function for each access system and a device for performing a QoS management function between heterogeneous access systems in a network including a plurality of interlocked access systems. The device for performing the QoS management function for each access system manages a user service session, a local QoS of the access system, and a QoS context of the service session. The device for performing the QoS management function between the heterogeneous access systems negotiates the QoS of the service session and manages the QoS context when the hand-off is performed between the heterogeneous access systems, and performs a QoS mapping operation.
11 Citations
27 Claims
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1. An apparatus for managing a quality of service (QoS) of a vertical hand-off operation of heterogeneous access systems, the apparatus comprising:
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a QoS negotiation managing unit for negotiating the QoS according to a vertical hand-off request between a serving access system and a target access system of a terminal, wherein the serving access system and the target access system are heterogeneous access systems and the hand-off request is a request for a vertical hand-off for transferring the connection between the terminal and the serving access system to between the terminal and the target access system in order to provide a service provided from the serving access system through the target access system; and an access system interface unit for requesting a QoS context for negotiating the QoS from the serving access system of the terminal in order to receive the requested QoS context, the QoS context being associated with QoS for the connection between the terminal and the serving access system established prior to the vertical hand-off, and for transmitting QoS information negotiated by the QoS negotiation managing unit to the target access system of the terminal for the connection transferred to between the terminal and the target access system. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for managing a quality of service (QoS) for an individual access system of a plurality of heterogeneous access systems including a serving access system and a target access system in cooperation with a device for managing the QoS of a vertical hand-off for transferring the connection between a terminal and the serving access system to between the terminal and the target access system in order to provide the service provided from the serving access system through the target access system, the apparatus comprising:
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an interface unit for performing an interface operation with the device for managing the QoS of a vertical hand-off operation between the heterogeneous access systems including the serving access system and the target access system, receiving a request for information for negotiating a vertical hand-off QoS, and transmitting a response to the request; and a QoS controller for managing a service session and QoS information, interworking with the interface unit, and providing information requested by the device for managing the QoS of a vertical hand-off between the heterogeneous access systems including the serving access system and the target access system, the QoS information managed by the QoS controller being associated with QoS for the connection between the terminal and the serving access system established prior to the vertical hand-off. - View Dependent Claims (8, 9, 10, 11)
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12. An apparatus for providing a vertical hand-off quality of service (QoS) between heterogeneous access systems including a serving access system and a target access system in a network having a plurality of interworked access systems, the apparatus comprising:
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a first QoS management unit for performing a local QoS management function for each access system; and a second QoS management unit for performing a QoS management function according to a vertical hand-off between the serving access system and the target access system for transferring the connection from the serving access system to the target access system in order to provide the service provided from the serving access system through the target access system, the second QoS management unit performing the QoS management function according to the vertical hand-off using information requested and obtained from the first QoS management unit performing the local QoS management function. - View Dependent Claims (13, 14)
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15. A method for managing a quality of service (QoS) of a vertical hand-off operation of heterogeneous access systems, comprising:
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a) receiving a QoS negotiation request for a vertical hand-off between heterogeneous access systems for transferring the connection between a terminal and a serving access system to between the terminal and a target access system in order to provide a service provided from the serving access system through the target access system; b) requesting for user information and access system information for negotiating a hand-off QoS from the serving access system and the target access system, and receiving the information, the information including information associated with QoS for the connection between the terminal and the serving access system established prior to the vertical hand-off; c) negotiating the QoS of the vertical hand-off operation by using the information received in b); and d) providing a QoS negotiation result to the target access system for the connection transferred to between the terminal and the target access system. - View Dependent Claims (16, 17, 18, 19)
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20. A method for providing a quality of service (QoS) for each access system in order to perform a vertical hand-off between heterogeneous access systems for transferring the connection between a terminal and the serving access system to between the terminal and a target access system in order to provide the service provided from the serving access system through the target access system, the method comprising:
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a) transmitting a QoS negotiation request for a vertical hand-off operation according to a vertical hand-off request from the terminal, by a serving access system; b) transmitting user information according to a user information request for negotiating the QoS, the user information including information associated with QoS for the connection between the terminal and the serving access system established prior to the vertical hand-off; c) receiving a vertical hand-off response according to a QoS negotiation based on the information transmitted in b); and d) performing a service session release according to the vertical hand-off response. - View Dependent Claims (21, 22, 23)
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24. A method for managing a quality of service (QoS) for each access system in order to perform a vertical hand-off between heterogeneous access systems for transferring the connection between the terminal and a serving access system to between the terminal and a target access system in order to provide a service provided from the serving access system through the target access system, the method comprising:
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a) receiving an access system information request for negotiating a vertical hand-off QoS, and providing access system information, by the target access system; b) receiving a hand-off QoS negotiation result obtained using QoS context associated with QoS for the connection between the terminal and the serving access system established prior to the vertical hand-off, and performing a preliminary operation for the vertical hand-off; and c) connecting a service session between the terminal and the target access system by using the vertical hand-off QoS negotiation result, and providing the service provided from the serving access system through the target access system. - View Dependent Claims (25, 26, 27)
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Specification