Unidirectional Lightweight Encapsulation With Header Compression For IP Based Satellite Communication Over DVB-S.

The Multi-Protocol Encapsulation (MPE) is a standard method for encapsulating IP packets into MpEG-2 TS frames. However MPE has some disadvantages in simplicity and efficiency to support next generation network

Cognitive Radio-Based Power Adjustment For Wi-Fi.

In this paper the idea of using Cognitive Radio (CR) techniques to optimize the access point (AP) configuration for IEEE 802.11 WLAN was exploited. In particular, we address the issue of optimizing AP transmission power and channel allocation within the network

Bandwidth Management for Intranets Using Multicast Firewalls

Multimedia applications utilizing multicast transmission techniques are becoming prevalent as the number of users and types of applications proliferate. Nonetheless, the deployment of such applications throughout an Intranet is constrained by the lack of multicast capable routers and the inability to protect the network from being swamped by multicast traffi

PERFORMANCE EVALUATION OF SINGLE-PATH AND MULTIPATH MANETS ROUTING PROTOCOLS FOR DENSE AND SPARSE TOPOLOGY

Mobile Ad Hoc Network (MANET) is a multi-hop wireless network in which fixed infrastructure is not used. A single-path routing protocol is mainly proposed as a single route from source node to destination node, while a multipath routing protocol uses multiple routes from the source to the destination node. This paper evaluates the performance of single-path routing protocols which are Cluster Based Routing Protocol (CBRP) and Ad hoc On-demand Distance Vector (AODV) along with a multipath routing protocol which is Ad hoc On-demand Multipath Distance Vector routing (AOMDV) in MANET environments with varying node densities (Dense and Sparse). Network Simulator (NS2) was used to evaluate the performance of these routing protocols. Our experimental simulation results show that: AOMDV protocol is better than AODV and CBRP in terms of Delay for both Dense and Sparse topologies with variant traffic sources, whereas AODV is better than CBRP and AOMDV in terms of Packet Delivery Ratio (PDR) with all traffic sources in Sparse topology

A Scalable QoS Scheduling Architecture For WiMAX Multi-Hop Relay Networks.

WiMAX Mobile Multi-hop Relay (MMR) network has been introduced to increase the capacity and extend the coverage area of a single WiMAX Base Station (BS) by the use of a Relay Station (RS)

The Effect Of Using XCAST Based Routing Protocol in Wireless Ad Hoc Networks.

Wireless ad hoc networks are a type of wireless network that can be easily created without the need of network infrastructure or central administration

Performance Evaluation Of Unidirectional Lightweight Encapsulation Using ns-2 And DVB-S Testbed.

Unidirectional Lightweight Encapsulation (ULE) is a recently published standard to overcome the efficiency problems of Multi-Protocol Encapsulation for satellite data transmission. This paper presents a comparative study of Unidirectional Lightweight Encapsulation performance using ns-2 [ll simulation and a DVB-S testbed. Performance metrics such link utilization packet loss and latency were taken. It was found that the results of both approaches were comparabl

Optimizing The MPLS Support For Real Time IPv6-Flows Using MPLS-PHS Approach.

The huge coverage space of IPv6 addresses and providing guaranteed support for the ever increasing customer demand, results in the dealing with bigger packet header-size compared to the payload-size especially in some real time video and audio applications, consequently more bandwidth is wasting

Statistical Analysis of Video Frame Size Distribution Originating from Scalable Video Codec (SVC)

Designing an effective and high performance network requires an accurate characterization and modeling of network traffic.The modeling of video frame sizes is normally applied in simulation studies and mathematical analysis and generating streams for testing and compliance purposes. Besides, video traffic assumed as a major source of multimedia traffic in future heterogeneous network. Therefore, the statistical distribution of video data can be used as the inputs for performance modeling of networks. The finding of this paper comprises the theoretical definition of distribution which seems to be relevant to the video trace in terms of its statistical properties and finds the best distribution using both the graphical method and the hypothesis test.The data set used in this article consists of layered video traces generating from Scalable Video Codec (SVC) video compression technique of three different movies

Survey And New Approach In Service Discovery And Advertisement For Mobile Ad Hoc Networks.

Service advertisement and discovery is an important component for mobile adhoc communications and collaboration in ubiquitous computing environments. The ability to discover services offered in a mobile adhoc network is the major prerequisite for effective usability of these networks. This paper aims to classify and compare existing Service Discovery (SD) protocols for MANETs by grouping them based on their SD strategies and service information accumulation strategies, and to propose an efficient approach for addressing the inherent issues