C omputer networks are evolving to support multimedia applications with diverse performance requirements. To provide quality of service (QoS) guarantees to these applications and ensure that the agreed QoS is sustained, it is not sufficient to just commit resources since QoS degradation is often unavoidable. Any fault or weakening of the performance of a network element may result in the degrad...

In MANET, the multicast routing is considered a non-deterministic polynomial (NP) complexity, it contains assorted objectives and restrictions. issue of quality services (QoS) based upon cost, delay, jitter, bandwidth, are constantly deemed as multi-objective for directing protocols (MR). Conversely, mobile node has finite battery energy lifetime network depends on its energy. Here, MR problem ...

Research in the area of end-to-end Quality of Service (QoS) has produced important results over the last years. However, most solutions are tailored for specific environments, assume layered system architectures, or integrate QoS management within the respective service components, such that the QoS management functionality is not easily reusable. Furthermore, proprietary QoS solutions are not ...

Differentiated Services (Diffserv) which was proposed by Internet Engineering Task Force (IETF), is a scalable and robust model for providing the end-to-end QoS. In the Diffserv networks, metering mechanisms are used to measure traffic stream. The single rate Three Color Meter (srTCM) [1],which was proposed by IETF,‏ meters an IP packet stream and marks its packets either green, yellow, or red....

Designing wireless sensor networks should meet appropriate parameters such as quality of service (QoS) defined by different users. The variable physical conditions of the environment, processing and transmission power limitations and limited communication capabilities are the most important obstacles that influence QoS parameters such as throughput, delay, reliability and network lifetime. The ...