Bandwidth allocation in IEEE 802.6 using non unity ratio bandwidth balancing

Spratt, M.

doi:10.1109/icc.1991.162457

Cited by 21 publications

(3 citation statements)

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“…N o w, we i n vestigate the case p = p. W e s h o w t h a t a n y Up and Op that are part of a solution to equations (5), (6), and (7), are equivalent t o Up and Op as given in equations (16) and (17).…”

Section: Existence Of Solution Formentioning

confidence: 99%

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An effective scheme for pre-emptive priorities in dual bus Metropolitan Area Networks

Liebeherr¹,

Akyildiz²,

Tantawi³

1992

Conference Proceedings on Communications Architectures &Amp; Protocols - SIGCOMM '92

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The IEEE 802.6 standard for Metropolitan Area Networks does not provide multiple priority tra c for connectionless data services. A priority m e c hanism that was considered in earlier versions of the standard showed to be not e ective. As of now, there exists no protocol for multiple access dual bus networks that is able to implement pre-emptive priorities and, at the same time, can satisfy minimal fairness requirements for transmissions at the highest priority level. In this study, a protocol with strictly pre-emptive priorities, i.e., a protocol that does not admit low priority tra c if the load from high priority tra c exceeds the capacity of the transmission channel, is presented. In addition, the protocol guarantees fairness for transmissions at the highest priority l e v el. By introducing a general characterization of bandwidth allocation schemes for dual bus networks, existing priority m e c hanisms can be categorized according to the provided quality of service. The unique existence of a bandwidth allocation scheme for multiple priority tra c is shown with a full utilization of the channel capacity, with a fair distribution of bandwidth respective to tra c from a particular priority l e v el and with pre-emptive priorities. The performance of the presented protocol is compared to existing proposals for multiple priority mechanisms. It is shown that adopting the new protocol results in shorter access delays for high priority transmissions. The protocol allows the stations of the network to react quickly to load changes. It is shown that the e ectiveness of the priority s c heme, compared to priority schemes using the bandwidth balancing mechanism, is less dependent on increasing the transmission speed of the network.

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Section: Existence Of Solution Formentioning

confidence: 99%

“…(b) p = p: U p = fj j jp 1 ; P j i=1 ip ; P N k=1 P P q=p+1 kq N ; j g (16) O p = N n U p (17) (c) p > p:…”

Section: Existence Of Solution Formentioning

confidence: 99%

An effective scheme for pre-emptive priorities in dual bus Metropolitan Area Networks

Liebeherr¹,

Akyildiz²,

Tantawi³

1992

Conference Proceedings on Communications Architectures &Amp; Protocols - SIGCOMM '92

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show abstract

“…delay, and bandwidth wastage. Although several methods for enhancing the DQDB protocol have heen proposed [1],[2], [3], [7], [8], [9], we believe there are still rooms t>o improve it in considering all these issues. In this paper, two :such protocols are proposed.…”

Section: Introductionmentioning

confidence: 99%

On the design issues of dual-bus high-speed metropolitan area networks

Huang

Proceedings of ICC/SUPERCOMM '96 - International Conference on Communications

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There arc seiierd important issues should be considered in designing a n e,ficient MAC protocol for dualbus high-speed metropolitan area network, m c h as priority, bandwidth balancing time, fairness, message delay, and bandwidth uiastage. In this paper, two eficient schemes are proposed for the dual-bus high-speed networks which consider these design, issues. The first scheme 2.3 for the fairness of bandwidth allocation and the second scheme is f o r the fairness of access delay. Simulation results show that the proposed schemes are m,ore eficient than other well-known schemes in every aspect. Most important, both schemes are quite simple and hence are very suitable to be impkmented in a high-speed environment.

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The Journey of SMDS -- A LAN Interconnect Solution

Joshi

Lai

1993

Local Area Network Interconnection

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Bandwidth allocation in IEEE 802.6 using non unity ratio bandwidth balancing

Cited by 21 publications

References 0 publications

An effective scheme for pre-emptive priorities in dual bus Metropolitan Area Networks

An effective scheme for pre-emptive priorities in dual bus Metropolitan Area Networks

On the design issues of dual-bus high-speed metropolitan area networks

The Journey of SMDS -- A LAN Interconnect Solution

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