Simplified the QoS Factor for the Ad-Hoc Network Using Fuzzy Technique

Abstract

Quality of Service (QoS) is a tool to measure the efficiency of the Ad-hoc network. QoS is a complex function because it depends mainly on four factors (throughput, packet delivery ratio, end-to-end delay and jitter). These four factors are functions of internal factors and are variables with the time. In the result the QoS is an ambiguous tool. This paper proposes a brand-new method to solve this ambiguity, it will use the fuzzy technique to simplify the QoS factor and summarize it in a simple form or in a single value for each application. So it will summarize all factors of the QoS in a single value for the network if the applications share is defined. This paper will apply the propose method on Mobile Ad-hoc NETwork (MANET) with different protocols. The new algorithm will summarize the efficiency of each protocol in a single (crisp) value for all applications. Finally, an important conclusion is proved, by experimental result, implying that higher throughput does not usually mean high QoS supported by the protocols.

FMADM System for MANET Environment

“…For this special case study, a network is designed for a camp, according to its user's requirements the E-Mail application is more frequent use than voice application. The simulation results shown in Table 5, the protocol evaluation value obtained by QoSHFS system from the work in [5], were based on the worst case, all the 33 nodes use E-Mail and 6 nodes use voice (3 links) simultaneously. The result shows that DSR performance could be enhanced, if the numbers of nodes that use E-Mail are reduced in a time.…”

“…When mobility model has different speeds, the average value will be taken as membership degree. For instance, nodes move in ranged [5][6][7][8][9][10] m/sec will have average mobility speed 7.5 m/sec. If there is a pause time, assume 5 sec in this model then average speed will be (7.5/5) m/sec.…”

“…The Adhoc protocol evaluation system that we proposed in [5] is extended to include the environment evaluation by appended the FMADM system. MATLAB is used in the implementation process.…”

“…[3] concentrated their study on investigating and quantifying the effects of various factors on the overall performance of Ad-hoc networks, while nodes cooperation is sufficient to achieve performance improvement is discussed in [4]. In addition to the QoSHFS for MANET application evaluation that detailed [5], MANET environment evaluation system will be design in this paper, as a result of its effective role on the overall protocols performance. Environment evaluation will be done by FMADM, due to MANET characteristic as previously explain.…”

Qos Enhanced Routing Protocols for Vehicular Network Using Soft Computing Technique

“…The vehicular-Adhoc networks [1] are infrastructure less wireless communication network framed for a specific reason. It utilizes the volunteering vehicles as the nodes to extend communication between the vehicles.…”