標題: Quality of service guarantee in a combined input output queued switch
作者: Lee, TH
Kuo, YW
Huang, JC
傳播研究所
Institute of Communication Studies
關鍵字: quality of service;combined input output queued switch;matching;exact emulation
公開日期: 1-二月-2000
摘要: Combined input output queued (CIOQ) architecture such as crossbar with speedup has recently been proposed to build a large capacity switch for broadband integrated services networks. It was shown that, for a speedup factor of 2, a CIOQ switch can achieve 100% throughput with a simple maximal matching algorithm [1]. Achieving 100% throughput, however, is not sufficient for per-connection quality of service QoS) guarantee. In [2],[3], it is proved that a CIOQ switch with a speedup factor of 2 can exactly emulate an output queued (OQ) switch if stable matching is adopted. Unfortunately, the complexity of currently known algorithms makes stable matching impractical for high-speed switches. In this paper, we propose a nerv matching algorithm called the least cushion first/most urgent first (LCF/MUF) algorithm and formally prove that a CIOQ switch with a speedup factor of 2 can exactly emulate an OQ switch which adopts any service discipline for cell transmission. A potential implementation of our proposed matching algorithm for strict priority service discipline is also presented.
URI: http://hdl.handle.net/11536/30737
ISSN: 0916-8516
期刊: IEICE TRANSACTIONS ON COMMUNICATIONS
Volume: E83B
Issue: 2
起始頁: 190
結束頁: 195
顯示於類別:期刊論文