A carrier fragmentation aware CSMA/ID MAC protocol for IP over WDM ring networks

  • Authors:
  • Jih-Hsin Ho

  • Affiliations:
  • Department of Information Management, Diwan University, Tainan, Taiwan

  • Venue:
  • WSEAS TRANSACTIONS on COMMUNICATIONS
  • Year:
  • 2010

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Abstract

In this paper, a packet pre-classification MAC protocol based on Carrier Sense Multiple Access with Idle Detection (CSMA/ID) with carrier fragmentation aware scheme has been investigated for completely transporting IP packets over the all-optical WDM ring networks. In order to improve the utilization of the network, the packets are first pre-classified into various class queues of access point (AP) according their length. The downstream access point recognizes the incomplete IP packet by the presence of the sub-carrier signal and pulls it off the ring. The carrier-sense can check the available channel length (ACL) to notify the transmission queues transmit the packet. This protocol avoids packet collision and uses carrier fragmentation when finding no appropriate ACL. An analytical model has had been developed to evaluate the performance of the protocol, and the simulation results show good network efficiency.