METHOD AND APPARATUS FOR MANAGING A BUFFER IN A COMMUNICATION SYSTEM
First Claim
1. A method for managing a buffer of a Radio Access Station (RAS) in a communication system, the method comprising:
- setting a threshold for each of a plurality of service classes;
upon receipt of a packet at the buffer, estimating a size of an available space of the buffer after the receipt of the packet;
comparing the estimated size with a first threshold corresponding to a first service class indicative of the service of the packet; and
scheduling at least one of a packet input and a packet output of the buffer according to a result of the comparison.
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Abstract
A method and apparatus for managing a buffer of a Radio Access Station (RAS) in a communication system are provided. An available buffer space determiner sets a threshold for each service class for scheduling packet input/output of the buffer according to priority of a service class, estimates and stores, upon receipt of a packet at the buffer, an available space size of the buffer after the packet reception, compares the estimated available space size of the buffer with a first threshold corresponding to a first service class indicative of a service class of the packet, and schedules packet input/output of the buffer according to the comparison result. A processor module schedules packet input/output of the buffer according to an output of the available buffer space determiner. The present invention can improve quality of services through service differentiation based on priorities of service classes and buffer management based on characteristics of the corresponding service traffics.
135 Citations
21 Claims
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1. A method for managing a buffer of a Radio Access Station (RAS) in a communication system, the method comprising:
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setting a threshold for each of a plurality of service classes; upon receipt of a packet at the buffer, estimating a size of an available space of the buffer after the receipt of the packet; comparing the estimated size with a first threshold corresponding to a first service class indicative of the service of the packet; and scheduling at least one of a packet input and a packet output of the buffer according to a result of the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for managing a buffer of a Radio Access Station (RAS) in a communication system, the apparatus comprising:
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an available buffer space determiner for setting a threshold for each of a plurality of service classes, for estimating, upon receipt of a packet at the buffer, a size of an available space of the buffer after receipt of the packet, for comparing the estimated size with a first threshold corresponding to a first service class indicative of the service of the packet, and for scheduling packet input/output of the buffer according to the comparison result; and a processor module for scheduling at least one of packet input and packet output of the buffer according to an output of the available buffer space determiner. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification