A framework for QoS provisioning in unified communications networks

Elnaka, Abdelwahab M.; Mahmoud, Qusay H.

doi:10.1109/ccnc.2014.7056302

Cited by 1 publication

(2 citation statements)

References 8 publications

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“…Industry analysts expected that business WAN bandwidth will increase on average 20% per year and pointed out the requirements for more bandwidth at the branch, with a focus on branch to Internet bandwidth . Elnaka and Mahmoud studied how to allocate the limited available bandwidth between heterogeneous sessions, in order to meet their diverse QoS requirements while maximizing the bandwidth utilization and minimizing the sessions dropping and blocking probabilities . They presented a two‐stage QoS queuing and scheduling scheme in the UC backbone network to allocate transmission bandwidth based on priorities.…”

Section: Related Workmentioning

confidence: 99%

“…28 Elnaka and Mahmoud studied how to allocate the limited available bandwidth between heterogeneous sessions, in order to meet their diverse QoS requirements while maximizing the bandwidth utilization and minimizing the sessions dropping and blocking probabilities. 29 They presented a two-stage QoS queuing and scheduling scheme in the UC backbone network to allocate transmission bandwidth based on priorities. 31 Meddeb tackled the optimal VPN design problem from an Incumbent Local Exchange Carrier (ILEC) or a Competitive Local Exchange Carrier (CLEC) standpoint.…”

Section: Networking Of Multi-site/domain Uc Systems Via P2p or Sdn Etcmentioning

confidence: 99%

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Networking of multi‐domain unified communications systems: Structure design and performance evaluation

Shen

Chen

Gong

et al. 2018

Concurrency and Computation

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Summary UC (Unified Communications) can integrate different terminals and media and has played an important role in some enterprises. However, for large UC system with multiple domains, there still exist unsolved issues such as large call delay, overlay management overhead, and bandwidth costliness. In this paper, the hierarchal structure, call routing, and bandwidth usage of the multi‐domain UC system are studied. After describing the architecture of the multi‐domain UC system, a no‐worse‐than‐two‐hop query algorithm based on P2P is proposed for inter domain call, and it is showed that 80% users can finish call query in one hop based on the derived performance formulas. Then, the typical transmission networking structure is designed with an overlay between provincial domains, and the bandwidth requirements of signaling and media traffics are estimated. By comparing the performances of overlays with mesh, star, and hybrid topologies, the hybrid overlay topology is showed to be the best choice in terms of cost and manageability for the typical traffic distribution. In the overlay with hybrid topology, the media traffic routes can be controlled dynamically with SDN (Software Defined Network), and the overlay bandwidth reserved can be used efficiently with utilization up to 84%, thus demonstrating the technical and economic feasibilities of the proposed transmission overlay.

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Section: Related Workmentioning

confidence: 99%

Section: Networking Of Multi-site/domain Uc Systems Via P2p or Sdn Etcmentioning

confidence: 99%