Performance Evaluation of Precision Time Protocol in an Software Defined Network Environment with Quality of Service
| Autor: | Yu, Caleb Mu Ling, 于牧靈 |
|---|---|
| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 Modern smart devices like smart phones, sensors, mobile devices requires better synchronization accuracy in order to accurately and timely transfer and receive data. Newer timing protocols like the Precision Time Protocol (PTP) were used to achieve better accuracy. PTP achieves synchronization accuracy at sub-microsecond level, but relies on frequent communication between devices to achieve fast synchronization. In tradition networks where many data flows are competing for limited bandwidth resource, heavy or bursty flows can prolong and vary network transmission time of PTP synchronization messages. A good way to deal with this problem is to implement Quality of Service (QoS) to allow PTP messages to have their own slice of the bandwidth and a higher priority over other traffic flows. QoS in traditional networks is difficult and tedious to configure. Software Defined Network (SDN) provides a simple and centralize configuration platform to implement QoS to allow PTP synchronization traffic a smooth and consistent network transmission environment. In this thesis, we study the effectiveness of SDN QoS on PTP time synchronization protocol. The SDN QoS implementation will include two parts: bandwidth allocation and prioritized queues. We will use a virtual platform to set up a SDN environment to study the effects of various background traffics on the synchronization accuracy of PTP with and without using SDN QoS. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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