A Lightweight Traffic Management Approach for Service Differentiation

2007 ◽  
Author(s):  
Jorge Rodriguez Sanchez ◽  
Maria L. Garcia Osma ◽  
Antonio J. Elizondo Armengol
Keyword(s):  
Traffic Management ◽  
Service Differentiation ◽  
Management Approach

A multi-service differentiation traffic management strategy in SDN cloud data center

2020 ◽  
Vol 171 ◽  
pp. 107143 ◽  
Author(s):  
Yaomin Wang ◽  
Xia Wang ◽  
Haiyan Li ◽  
Yi Dong ◽  
Qing Liu ◽  
...  
Keyword(s):  
Data Center ◽  
Traffic Management ◽  
Management Strategy ◽  
Service Differentiation ◽  
Cloud Data Center ◽  
Cloud Data

scholarly journals A IEEE 802.11e HCCA Scheduler with a Reclaiming Mechanism for Multimedia Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-22 ◽  
Author(s):  
Anna Lina Ruscelli ◽  
Gabriele Cecchetti
Keyword(s):  
Traffic Management ◽  
Scheduling Algorithm ◽  
Multimedia Applications ◽  
Service Differentiation ◽  
Transmission Time ◽  
Ieee 802.11E ◽  
Variable Bit Rate ◽  
Bit Rate ◽  
Positive Effects ◽  
Dynamic Update

The QoS offered by the IEEE 802.11e reference scheduler is satisfactory in the case of Constant Bit Rate traffic streams, but not yet in the case of Variable Bit Rate traffic streams, whose variations stress its scheduling behavior. Despite the numerous proposed alternative schedulers with QoS, multimedia applications are looking for refined methods suitable to ensure service differentiation and dynamic update of protocol parameters. In this paper a scheduling algorithm,Unused Time Shifting Scheduler(UTSS), is deeply analyzed. It is designed to cooperate with a HCCA centralized real-time scheduler through the integration of a bandwidth reclaiming scheme, suitable to recover nonexhausted transmission time and assign that to the next polled stations. UTSS dynamically computes with anO(1)complexity transmission time providing an instantaneous resource overprovisioning. The theoretical analysis and the simulation results highlight that this injection of resources does not affect the admission control nor the centralized scheduler but is suitable to improve the performance of the centralized scheduler in terms of mean access delay, transmission queues length, bursts of traffic management, and packets drop rate. These positive effects are more relevant for highly variable bit rate traffic.

scholarly journals A Traffic Management Scheme for Service Differentiation over MANETs

2006 ◽  
Vol 13C (4) ◽  
pp. 455-460
Author(s):  
Kwan-Woong Kim ◽  
Sung-Hwan Bae ◽  
Dae-Ik Kim
Keyword(s):  
Traffic Management ◽  
Service Differentiation ◽  
Management Scheme

scholarly journals Traffic management with elephant flow detection in software defined networks (SDN)

2019 ◽  
Vol 9 (4) ◽  
pp. 3203
Author(s):  
Hnin Thiri Zaw ◽  
AungHtein Maw
Keyword(s):  
Traffic Management ◽  
Shortest Paths ◽  
Traffic Load ◽  
Management Approach ◽  
Centralized Control ◽  
Least Cost Path ◽  
Bandwidth Utilization ◽  
Traffic Splitting ◽  
Management Method ◽  
Flow Detection

Multipath routing is to distribute the incoming traffic load among available paths between source and destination hosts. Instead of using the single best path, multipath scheme can avoid the congested path. Equal Cost Multi-Path (ECMP) performs the static traffic splitting based on some tuples of the packet headers. The limitation of ECMP does not consider the network parameters such as bandwidth and delay. Unlike the traditional networks, Software-Defined Network (SDN) has many advantages to support dynamic multipath forwarding due to its special characteristics, such as separation of control and data planes, global centralized control, and programmability of network behavior. In this paper, we propose a new architecture design for dynamic multipath-based traffic management approach in the SDN, which comprises of five components: detecting long (elephant) flow, computing shortest paths, estimating end-to-end delay and bandwidth utilization, calculating least cost path and rerouting traffic flow from the ongoing path to the best path. The simulation environment is created through the usage of Mininet emulator and ONOS controller. The evaluation outcomes show that the proposed traffic management method outperforms the ECMP and reactive forwarding method for both TCP and UDP traffic.

A Functional Collaborative Work Unit for Analysing Hazardous Flight Approaches

2007 ◽  
Vol 51 (2) ◽  
pp. 102-106
Author(s):  
Ronish Joyekurun ◽  
Paola Amaldi ◽  
William Wong
Keyword(s):  
Boundary Condition ◽  
Traffic Management ◽  
Functional Unit ◽  
Collaborative Work ◽  
Air Traffic Management ◽  
Management Approach ◽  
Work Unit ◽  
Dynamic Interactions ◽  
Safety Boundary ◽  
Verbal Exchanges

We report in this ongoing study on the resilience of Air Traffic Management approach operations by considering a collaborative work unit consisting of the Executive Controller, the Pilot Flying and the Pilot Non-Flying — the behaviour of the team is hypothetically structured by, a) the divided labour strategies of approach control and, b) an adaptiveness to organisational objectives of efficiency. Normal Accident Theory is used as a framework for analysing 348 verbal exchanges from five aviation occurrences. We make use of navigation in hazardous atmospheric situations, as a safety-boundary condition to inform on the behaviour of operator teams. Five broad activity-related themes leading to four detailed collaborative themes were obtained: 1) Monitoring of activities, 2) Redirecting attention to perceived priorities, 3) Implicit redistribution of responsibilities, and 4) Explicit assignation of decisional activities. We conclude that the dynamic interactions within the team during hazardous approaches indicate a functional unit of collaborative work.

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