Method and apparatus for scheduling to guarantee QoS of VoIP service in portable Internet system
First Claim
1. A scheduling device of a portable Internet system, the scheduling device comprising a packet access router accessed to a voice over Internet protocol (VoIP) system providing a VoIP service through an Internet network, the scheduling device accessed to a portable Internet terminal, the scheduling device comprising:
- a management processing unit for transmitting/receiving a packet to/from the portable Internet terminal through a management connection;
an unsolicited grant service (UGS) processing unit for transmitting/receiving the packet to/from the portable Internet terminal through a UGS connection;
a classifier for classifying the packet transmitted/received to/from the portable Internet terminal, transmitting the packet to the management processing unit when the packet is a control message for the VoIP service, and transmitting the packet to the UGS processing unit when the packet is a data message for the VoIP service; and
a scheduler for performing radio resource allocation to transmit/receive the packet.
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Accused Products
Abstract
The present invention relates to a scheduling method and device for guaranteeing a voice over Internet protocol (VoIP) quality of service (QoS) in a portable Internet system. In the portable Internet system, when a packet for connecting a session between a base station and a portable Internet terminal is input for a VoIP service between a VoIP terminal and a portable Internet terminal, the session is connected by transmitting/receiving the packet through a management connection of a media access control (MAC) layer. In addition, an unsolicited grant service (UGS) connection is established between the base station and the portable Internet terminal after connecting the session between the base station and the portable Internet terminal. Then, the packet including data for the VoIP service is transmitted/received through the UGS connection to perform a voice call. Accordingly, a high quality VoIP service may be provided in a bad propagation environment.
30 Citations
23 Claims
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1. A scheduling device of a portable Internet system, the scheduling device comprising a packet access router accessed to a voice over Internet protocol (VoIP) system providing a VoIP service through an Internet network, the scheduling device accessed to a portable Internet terminal, the scheduling device comprising:
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a management processing unit for transmitting/receiving a packet to/from the portable Internet terminal through a management connection;
an unsolicited grant service (UGS) processing unit for transmitting/receiving the packet to/from the portable Internet terminal through a UGS connection;
a classifier for classifying the packet transmitted/received to/from the portable Internet terminal, transmitting the packet to the management processing unit when the packet is a control message for the VoIP service, and transmitting the packet to the UGS processing unit when the packet is a data message for the VoIP service; and
a scheduler for performing radio resource allocation to transmit/receive the packet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A portable Internet terminal accessed to a voice over Internet protocol (VoIP) user terminal accessed to a VoIP system providing a VoIP service through a base station of a portable Internet system, the portable Internet terminal comprising:
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a management processing unit for transmitting/receiving a packet to/from the base station through a management connection;
an unsolicited grant service (UGS) processing unit for transmitting/receiving the packet to/from the base station through a UGS connection; and
a classifier for classifying the packet transmitted/received to/from the base station, transmitting the packet to the management processing unit when the packet is a control message for the VoIP service, and transmitting the packet to the UGS processing unit when the packet is a data message for the VoIP service. - View Dependent Claims (10, 11)
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12. A scheduling method of a portable Internet system accessed to a voice over Internet protocol (VoIP) system providing a VoIP service through a base station, the scheduling method for transmitting/receiving a packet between a VoIP terminal accessed to the VoIP system and a portable Internet terminal, the scheduling method comprising:
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when a packet for connecting the session between a base station and the portable Internet terminal is input, connecting a session for the VoIP service between the VoIP terminal and the portable Internet terminal by transmitting/receiving the packet through a management connection of a media access control (MAC) layer;
establishing a unsolicited grant service (UGS) connection between the base station and the portable Internet terminal after connecting the session between the base station and the portable Internet; and
when the packet including data for the VoIP service is input, transmitting/receiving the packet through the UGS connection, and performing a voice call. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A scheduling method of a portable Internet system accessed to a voice over Internet protocol (VoIP) system providing a VoIP service through a base station, the scheduling method for transmitting/receiving a packet between a VoIP terminal accessed to the VoIP system and a portable Internet terminal, wherein the packet for connecting a session between the VoIP terminal and the portable Internet terminal is transmitted/received through a management connection of a media access control (MAC) layer and the packet including data for the VoIP service is transmitted/received through an unsolicited grant service (UGS) connection, the scheduling method comprising:
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receiving a carrier-to-interference-and-noise ratio (CINR) measurement value from the portable Internet terminal;
calculating a CINR average value among the CINR measurement values;
estimating a CINR variance value based on the CINR measurement value and the CINR average value;
estimating a propagation environment variance direction of the portable Internet terminal based on the CINR average value and the CINR variance value; and
establishing a radio resource allocation method according to the estimated propagation environment variance direction. - View Dependent Claims (22, 23)
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Specification