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Elastic Service Availability: Utility Framework and Optimal Provisioning

Publication ,  Journal Article
Xu, D; Li, Y; Chiang, M; Calderbank, AR
Published in: IEEE Journal on Selected Areas in Communications
January 1, 2008

Service availability is one of the most closely scrutinized metrics in offering network services. It is important to cost effectively provision a managed and differentiated network with various service availability guarantees under a unified platform. In particular, demands for availability may be elastic and such elasticity can be leveraged to improve cost-effectiveness. In this paper, we establish the framework of provisioning elastic service availability through network utility maximization, and propose an optimal and distributed solution using differentiated failure recovery schemes. First, we develop a utility function with configurable parameters to represent the satisfaction perceived by a user upon service availability as well as its allowed source rate. Second, adopting Quality of Protection [1] and shared path protection, we transform optimal provisioning of elastic service availability into a convex optimization problem. The desirable service availability and source rate for each user can be achieved using a price-based distributed algorithm. Finally, we numerically show the tradeoff between the throughput and the service availability obtained by users in various network topologies. This investigation quantifies several engineering implications. For example, indiscriminately provisioning service availabilities for different kinds of users within one network leads to noteworthy sub-optimality in total network utility. The profile of bandwidth usage also illustrates that provisioning high service availability exclusively for critical applications leads to significant waste in bandwidth resource. © 2008, IEEE. All rights reserved.

Duke Scholars

Published In

IEEE Journal on Selected Areas in Communications

DOI

ISSN

0733-8716

Publication Date

January 1, 2008

Volume

26

Issue

6

Start / End Page

55 / 65

Related Subject Headings

  • Networking & Telecommunications
  • 4606 Distributed computing and systems software
  • 4006 Communications engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
  • 0805 Distributed Computing
 

Citation

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Xu, D., Li, Y., Chiang, M., & Calderbank, A. R. (2008). Elastic Service Availability: Utility Framework and Optimal Provisioning. IEEE Journal on Selected Areas in Communications, 26(6), 55–65. https://doi.org/10.1109/JSACOCN.2008.030607
Xu, D., Y. Li, M. Chiang, and A. R. Calderbank. “Elastic Service Availability: Utility Framework and Optimal Provisioning.” IEEE Journal on Selected Areas in Communications 26, no. 6 (January 1, 2008): 55–65. https://doi.org/10.1109/JSACOCN.2008.030607.
Xu D, Li Y, Chiang M, Calderbank AR. Elastic Service Availability: Utility Framework and Optimal Provisioning. IEEE Journal on Selected Areas in Communications. 2008 Jan 1;26(6):55–65.
Xu, D., et al. “Elastic Service Availability: Utility Framework and Optimal Provisioning.” IEEE Journal on Selected Areas in Communications, vol. 26, no. 6, Jan. 2008, pp. 55–65. Scopus, doi:10.1109/JSACOCN.2008.030607.
Xu D, Li Y, Chiang M, Calderbank AR. Elastic Service Availability: Utility Framework and Optimal Provisioning. IEEE Journal on Selected Areas in Communications. 2008 Jan 1;26(6):55–65.

Published In

IEEE Journal on Selected Areas in Communications

DOI

ISSN

0733-8716

Publication Date

January 1, 2008

Volume

26

Issue

6

Start / End Page

55 / 65

Related Subject Headings

  • Networking & Telecommunications
  • 4606 Distributed computing and systems software
  • 4006 Communications engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
  • 0805 Distributed Computing