Influence of Self-Similar Traffic Type on Performance of QoS Routing Algorithms

Abstract

Abstract-Providing a Quality of Services (QoS) into current telecommunication networks based on packet technology is a big challenge nowadays. Network operators have to support a number of new services like voice or video which generate new type of traffic. This traffic serviced with QoS in consequence requires access to appropriate network resources. Additionally, new traffic type is mixed with older one, like best-effort. Analysis of these new and mixed traffic types shows that this traffic is self-similar. Network mechanisms used for delivery of quality of services may depend on traffic type especially from the performance point of view. This paper presents a feasibility study done into the effect of traffic type influence on performance of routing algorithm while the routing algorithm is treated as one of the mechanisms to support QoS in the network.

The Methods to Improve Quality of Service by Accounting Secure Parameters

“…The shortest paths (Low Cost Routing) between the incoming edge router and others are calculated by the routing protocol. Lets consider the calculating of routing cost method based on security parameters and fractal structure of traffic [4,23,25,26].…”

“…QoS methods are aimed at compensat-ing the negative effects of temporary overloads ocurring in packet-switched networks. These methods use various queue management, reservation and feedback algorithms to reduce the negative impact of queues to acceptable to user's level [3][4][5][6]. Experimental and numerical studies conducted in recent decades indicate that many multiservice networks traffic has self-similar properties [2,[7][8][9][10].…”

The method of secure routing of multifractal traffic

“…При забезпеченні продуктивності мережі використовуються методи забезпечення якості обслуговування (Quality of Service, QoS), які підтримують стабільну роботу сучасних сервісів: IP-телефонії, відео-і радіомовлення, інтерактивного дистанційного навчання тощо. Методи забезпечення QoS спрямовані на покращення робочих характеристик, надійності мережі, зменшення затримок і втрат пакетів у періоди перевантаження мережі [2,3]. До основних причин зниження рівня якості обслуговування відноситься різнорідність мережних ресурсів та їх обмеженість при передачі трафіку, що призводить до виникнення вузьких місць у мережі.…”

Calculation of routing value in MPLS network according to traffic fractal properties

“…It turned out that initially non-self-similar properties of data streams, after processing on nodal servers and active network elements, begin to show pronounced signs of self-similarity. [1,2] At present, the Multiprotocol Label Switching Protocol (MPLS) is an effective solution to the problem of ensuring quality of network maintenance. Traffic management based on differentiated services in MPLS networks provides scalability of networks with several classes of services, resource reservation, fault tolerance and optimization of resource transfer.…”

“…With the advent of MPLS-networks, they are studied in terms of impact of self-similar traffic properties on the quality of network maintenance. In works [1][2][3], studies of the effect of traffic self-similarity on the convergence of a real network in traffic control with different QoS (Quality of Service) were carried out. In [3], the multipath routing algorithm is proposed to reduce end-to-end delay and amount of losses.…”