GFR 서비스를 위한 성능 향상된 버퍼관리 알고리즘 = Performance Improved Buffer Management Algorithm for GFR Service

다국어 초록 (Multilingual Abstract)

The existing buffer management scheme is caused by with burstness characteristic of the TCP traffic and with only the transmission which is not loss it provides the smallest transmission rate guarantee where the GFR demands and a fair characteristic.In order to provide a high fair characteristic from the dissertation which it sees with the smallest transmission rate guarantee where the GFR demands it proposed the existing buffer algorithm which applies a Fuzzy mechanism in the existing buffer management technique. The proposed algorithm decides a packet disuse used by three parameters which are composed of tagging information, the buffer usage, and the load of VC. Simulation results shows that the fairness and goodput of the proposed algorithm were excellent where the size of MCR will become larger, from the switch the Double-EPD or the DFBA was visible a similar efficiency even from size change of the buffer. The algorithm which is proposed provides a good throughput and a fair characteristic.

국문 초록 (Abstract)

기존의 버퍼 관리 방법은 TCP 트래픽의 "burstness" 특성으로 인해 손실 없는 전송만으로는 GFR이 요구하는 최소 전송률 보장과 공평성을 제공하기 어렵다.본 논문에서는 GFR이 요구하는 최소 전송률 보장과 높은 공평성을 제공하기 위하여 기존의 버퍼관리 기법에 퍼지 이론을 적용한 버퍼관리 알고리즘을 제안하였다. 제안된 알고리즘은 태깅정보, 버퍼 점유량, VC의 부하정도로 구성된 세 개의 파라미터를 이용하여 패킷 폐기를 결정한다. 시뮬레이션 결과 MCR의 크기가 커질수록 제안된 알고리즘의 수율과 공평성이 우수하였으며, 스위치에서 버퍼의 크기 변화에서도 Double-EPD나 DFBA는 비슷한 성능을 보였고, 제안된 알고리즘은 좋은 수율과 공평성을 제공한다.

참고문헌 (Reference)

1 "UBR+ Service Category Definition" -1598, dec.1996.

2 "Providing Bandwidth Guara- -ntees to Internetwork Traffic in ATM Networks" 1998.

3 "Guaranteed Frame Rate: A Better Service for TCP/IP in ATM Networks" 15 : 46-54,

4 "Design Issues for providing Minimum Rate Guarantees to the ATM Unspecified Bit Rate Service" 169-175, 1998.

5 "Buffer Management for the GFR Service"

6 "An Efficient Traffic Control Approach for GFR Services in IP/ ATM Internetworks" 2 : 1112-1117, 1998.

7 "ATM Forum Traffic Management Specification, Version 4.0" ATM Forum Technical Committee -40, Mar.1996.

8 "A fair buffer allocation scheme" 21 : 220-226, 1998.

9 "A Simulation Study of Differential Fair Buffer Allocation" 365-372, 2000.