Apparatus and method for connection admission control in broadband wireless access system
First Claim
1. A method for Connection Admission Control (CAC) in a Broadband Wireless Access (BWA) system, the method comprising:
- detecting a Quality of Service (QoS) class of a call requesting connection admission;
determining an application layer required bandwidth by using the QoS parameters of a Service Flow (SF) of the detected QoS class;
determining a required bandwidth weight of the QoS class in consideration of a packet header overhead;
determining per-slot available bandwidths of a reference QoS class and the QoS class by using the determined application layer required bandwidth;
determining a required bandwidth conversion ratio of a corresponding QoS class by using the determined per-slot available bandwidths; and
determining an equivalent Media Access Control (MAC) layer required bandwidth by using the determined application layer required bandwidth, the required bandwidth weight, and the required bandwidth conversion ratio.
1 Assignment
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Accused Products
Abstract
An apparatus and method for Connection Admission Control (CAC) in a Broadband Wireless Access (BWA) system are provided. In the method, a QoS class of a call requesting connection admission is detected and an application layer required bandwidth is determined using the QoS parameters of a service flow of the detected QoS class. A required bandwidth weight of the QoS class is determined in consideration of a packet header overhead. Per-slot available bandwidths of a reference QoS class and the QoS class are determined using the determined application layer required bandwidth, and a required bandwidth conversion ratio of a corresponding QoS class is determined using the determined per-slot available bandwidths. An equivalent MAC layer required bandwidth is determined using the determined application layer required bandwidth, the required bandwidth weight, and the required bandwidth conversion ratio.
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Citations
24 Claims
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1. A method for Connection Admission Control (CAC) in a Broadband Wireless Access (BWA) system, the method comprising:
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detecting a Quality of Service (QoS) class of a call requesting connection admission; determining an application layer required bandwidth by using the QoS parameters of a Service Flow (SF) of the detected QoS class; determining a required bandwidth weight of the QoS class in consideration of a packet header overhead; determining per-slot available bandwidths of a reference QoS class and the QoS class by using the determined application layer required bandwidth; determining a required bandwidth conversion ratio of a corresponding QoS class by using the determined per-slot available bandwidths; and determining an equivalent Media Access Control (MAC) layer required bandwidth by using the determined application layer required bandwidth, the required bandwidth weight, and the required bandwidth conversion ratio. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for Connection Admission Control (CAC) in a Broadband Wireless Access (BWA) system, the apparatus comprising:
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a controller for determining whether there is a call requesting connection admission; and a CAC processor for detecting a Quality of Service (QoS) class of the call requesting connection admission, for determining an application layer required bandwidth by using the QoS parameters of a Service Flow (SF) of the detected QoS class, for determining a required bandwidth weight of the QoS class in consideration of a packet header overhead, for determining per-slot available bandwidths of a reference QoS class and the QoS class by using the determined application layer required bandwidth, for determining a required bandwidth conversion ratio of a corresponding QoS class by using the determined per-slot available bandwidths, and for determining an equivalent Media Access Control (MAC) layer required bandwidth by using the determined application layer required bandwidth, the required bandwidth weight, and the required bandwidth conversion ratio. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification