@misc{oai:ir.soken.ac.jp:00001504,
 author = {ORAWIWATTANAKUL, Tananun and オラウィワタナクン, タナナン and ORAWIWATTANAKUL, Tananun},
 month = {2016-02-17},
 note = {Optical burst switching (OBS) is a promising switching technology for<br />next-generation Internet backbone networks. The main objectives of the dissertation<br />was to provide fairness from various aspects, including rate and distance fairness, to<br />OBS networks without degrading the loss probability or throughput.<br />　　This dissertation proposes a rate fairness preemption (RFP) scheme to achieve<br />max-min fair bandwidth allocation (FBA) or rate fairness in OBS networks. Core<br />switches in RFP do not need to have a function for monitoring both the arrival and<br />loss rates of flows. Methods of adaptive and fixed max-min rate allocation are<br />introduced. RFP based on fixed max-min rate allocation is the simplest way of<br />achieving max-min FBA in OBS networks because it does not require any additional<br />control message to update the arrival or fairly allocated rates as required by existing<br />FBA schemes. A discrete-time Markov chain-based model for analysis of the burst<br />loss probability for flows in RFP-based OBS networks is proposed. The performance<br />of RFP was demonstrated through both analyses and simulations.<br />　　In addition, this dissertation proposes a technique of deflection routing (DR),<br />called max-min DR (MMDR), to reduce losses when max-min FBA is achieved in<br />OBS networks. The proposed DR strategy can be adapted to preemption-based and<br />rate-control-based FBA schemes. In this research, we integrated MMDR with RFP<br />and derived a new scheme called rate fairness preemption with deflection routing<br />(RFP-DR). The simulation results indicate that RFP-DR can isolate and protect<br />services as RFP does, but RFP-DR yields the lower total burst loss probability.<br />　　Although FBA can be achieved in OBS networks, the actual transmission rate of<br />flows not only depends on the fairly allocated rate but also its burst loss probability<br />due to the high-loss characteristic of OBS. The burst loss probability of flows in OBS<br />networks tends to increase with larger hop counts. Therefore, rate fairness or FBA<br />should be provided with distance fairness (fairness among flows with different hop<br />counts) so that we can achieve real fairness in the sense of fair transmission rates.<br />Consequently, this dissertation introduces a rate and distance fairness preemption<br />(RDFP) scheme to achieve max-min FBA while ensuring distance fairness for traffic<br />transmitted under the max-min rate.<br />　　The analytical and simulation results indicate that the proposed schemes<br />effectively solve fairness problems in OBS networks without degrading the total<br />burst loss probability. In addition, the proposed schemes are simple enough to<br />implement in practical networks because of their low computational complexity., 総研大甲第1289号},
 title = {Fairness Provisioning in Optical Burst Switching Networks},
 year = {}
}