A generic QoS mapping mechanism for distributed multimedia applications is presented. A generic multilevel QoS model is also proposed. A user can specify the user QoS abstractly in the highest level of the proposed QoS model, and QoS in lower level than user level QoS is expressed in level-specific QoS parameters. Hence two QoS mapping methods are developed. The first method maps the abstract u...

There are various approaches for QoS-based web service composition using GA (Genetic Algorithm). Most of them use the sum of the values of QoS properties times their weights as the fitness function of GA, to evaluate the QoS of service compositions. However, by using this function, the service composition calculated by GA has shortcomings. For example, response time of the produced service comp...

The emerging video services are associated with stringent quality-of-service (QoS) requirements and place high bandwidth demands on the core networks. Edge caching can facilitate QoS while easing requirement from However, such schemes require on-field equipment, in which energy consumption is a function of cache utilization. Designing opportunistic strategies for efficiency therefore essential ...

We describe Quality of service pICKER (QUICKER), a modeldriven QoS mapping toolchain for supporting the design and evolution of application QoS. QUICKER automates the mapping of QoS requirements onto platform-specific QoS configuration options by (1) choosing appropriate subset of QoS options for given QoS policies and (2) assigning values to each of these selected QoS options. QUICKER also pro...

multi-path is favorite alternative for sensor networks, as it provides an easy mechanism to distributetraffic, as well as considerate fault tolerance. in this paper, a new clustering based multi path routingprotocol namely ecrr (energy efficient cluster based routing algorithm for improving reliability) isproposed, which is a new routing algorithm and guarantees the achievement to required qos ...

The widespread usage of SMS services in cellular systems and increasing number of service providers necessitates concerning of SMS QoS in these systems. This paper proposed six groups of telecommunication QoS and SMS QoS studies, groups are classified according to the objective, the objective of each group is as followes :group AQoS definitions, parameters and parameters computations, group BTe...

The requirements for the QoS of distributed applications are traditionally expressed in terms of network oriented or systems oriented parameters. In general, the users of these services are not interested or capable of specifying the QoS of their services in such technical terms. In this paper, we propose modeling and engineering concepts for the mapping of end user QoS onto system and network ...

Distributed multimedia applications are sensitive to the Quality of Service (QoS) delivered by underlying communication networks. The main question this work addresses is how to adapt multimedia applications to the QoS delivered by the network and vice versa. We introduce QoSockets, an extension to the sockets mechanism to enable QoS reservation and management. QoSockets automatically generates...

It is important to evaluate the quality of service (QoS) bus rapid transit (BRT) station platform operation. Passenger-specific area (PSA) used as a QoS measure which determined by considering passenger activities separately. As passengers perform various on same space, there need BRT collectively. When evaluating platforms, many researchers calculated PSA for whole area, while very few highlig...