Abstract
Optical Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) is a Media Access Control (MAC) protocol proposed for future metro Wavelength Division Multiplexing (WDM) ring networks with a fixed receiver and a tunable transmitter at access nodes. In this paper, we focus on the unslotted version of the optical CSMA/CA MAC which is a fully-distributed and asynchronous protocol We present the results of design and performance evaluation of fairness control schemes based on Longest Queue First (LQF) scheduling and two random routing algorithms - Full Random Routing (FRR) and Partial Random Routing (PRR). Through extensive network-level simulation of a WDM ring network with 10 nodes and 10 wavelengths on a 100 km ring at 10 Gbps line rate, we demonstrate a combination of the LQF scheduling and the PRR with a retransmission counter provides good fairness (fairness index of 0.9995) with high bandwidth efficiency and small delay spread, under highly unbalanced traffic conditions.
| Original language | English |
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| Pages | 2370-2374 |
| Number of pages | 5 |
| Publication status | Published - 2002 |
| Externally published | Yes |
| Event | GLOBECOM'02 - IEEE Global Telecommunications Conference - Taipei, Taiwan, Province of China Duration: 17 Nov 2002 → 21 Nov 2002 |
Conference
| Conference | GLOBECOM'02 - IEEE Global Telecommunications Conference |
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| Country/Territory | Taiwan, Province of China |
| City | Taipei |
| Period | 17/11/02 → 21/11/02 |