A simple bandwidth management strategy based on measurements of instantaneous virtual path utilization in ATM networks

Shiomoto, Kohei; Chaki, Shinichiro; Yamanaka, Naoaki

doi:10.1109/90.731198

Cited by 30 publications

(19 citation statements)

References 16 publications

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“…However, increasing utilization is not the only consideration. For example, even if a particular implementation could consistently maintain utilization near 100%, it would be unacceptable if the bandwidth reallocation time were significantly higher than without dynamic allocation, resulting in a significant increase in queuing delay [SCY98]. The central hypothesis of the study, then, is that DBA on a TDM platform can achieve higher utilization on its aggregate link than static allocation without adversely affecting queuing delay.…”

Section: Hypothesis and Goalsmentioning

confidence: 99%

“…For example, simulation results from Shiomoto, et al indicate that an α of 4.156E-3 will produce a very accurate representation of the system's instantaneous utilization for a virtual circuit with a peak rate of 10 Mbps [SCY98]. In general, α can be determined by 2-10…”

Section: Weighting Factor αmentioning

confidence: 99%

“…In fact, "with bursty traffic, the average rate of the cell stream over a virtual circuit is low compared to the peak rate" [SCY98].…”

Section: Dynamic Bandwidth Allocation In Atmmentioning

confidence: 99%

“…Recent advances in ATM technology have taken QoS guarantees one step further, supporting dynamic bandwidth allocation (DBA) [Sai97,Shi98,SCY98,WaM99]. DBA allows circuits access to unused bandwidth, thereby using bandwidth more efficiently.…”

Section: -1mentioning

confidence: 99%

“…The amount of bandwidth requested is usually based on the required peak cell rate of the circuit [WaM99,SCY98]. Thus, bandwidth has traditionally been allocated statically at the peak cell rate to guarantee the desired quality of service.…”

Section: Quality Of Service Guaranteesmentioning

confidence: 99%

See 4 more Smart Citations

Performance analysis of a dynamic bandwidth allocation algorithm in a circuit-switched communications network

Schwamb¹,

Baldwin²,

Raines³

et al.

MILCOM 2002. Proceedings

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Military communications networks typically employ a gateway multiplexer to aggregate all communications traffic onto a single link. These multiplexers typically use a static bandwidth allocation method via time-division multiplexing (TDM). Inefficiencies occur when a high-bandwidth circuit, e.g., a video teleconferencing circuit, is relatively inactive rendering a considerable portion of the aggregate bandwidth wasted while inactive. Dynamic bandwidth allocation (DBA) reclaims unused bandwidth from circuits with low utilization and reallocates it to circuits with higher utilization without adversely affecting queuing delay. The proposed DBA algorithm developed here measures instantaneous utilization by counting frames arriving during the transmission time of a single frame on the aggregate link. The maximum calculated utilization observed over a monitoring period is then used to calculate the bandwidth available for reallocation. A key advantage of the proposed approach is that it can be applied now and to existing systems supporting heterogeneous permanent virtual circuits. With the inclusion of DBA, military communications networks can bring information to the warfighter more efficiently and in a shorter time even for small bandwidths allocated to deployed sites. The algorithm is general enough to be applied to multiple TDM platforms and robust enough to function at any line speed, making it a viable option for high-speed multiplexers. The proposed DBA algorithm provides a powerful performance boost by optimizing available resources of the communications network. Utilization results indicate the proposed DBA algorithm significantly out-performs the static allocation model in all cases. The best configuration uses a 65536 bps allocation granularity and a 10 second monitoring period. Utilization gains observed with this configuration were almost 17\% over the static allocation method. Queuing delays increased by 50% but remained acceptable, even for real-time traffic. Subject Terms Report Classification unclassified Classification of this page unclassified Classification of Abstract unclassified Limitation of Abstract UU Number of Pages216

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Section: Hypothesis and Goalsmentioning

confidence: 99%

Section: Weighting Factor αmentioning

confidence: 99%

“…In fact, "with bursty traffic, the average rate of the cell stream over a virtual circuit is low compared to the peak rate" [SCY98].…”

Section: Dynamic Bandwidth Allocation In Atmmentioning

confidence: 99%