A. HAfiD and G. Bochmann. An Approach to Quality of Service Management in Distributed Multimedia Application: Design and Implementation. Multimedia Tools and Applications, 9(2):167--191, 1999.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....vary from user to user and from application to application, these requirements need to be translated (mapped) to a finite set of network and system resource requirements. QoS Management is thus concerned with the specification, mapping, monitoring and control of QoS in a distributed application [1]. This raises the the following questions: ffl What represent user perceptions of QoS and how do they relate to technical configurations ffl How to guarantee contracted QoS in a heterogeneous networked application environment Answers to these questions are difficult because a typical ....

Abdelhakim Hafid et al. "An Approach to Quality of Service Management for Distributed Multimedia Applications". In Proceedings of International Conference on Open DistributedProcessing (ICODP'95), February 1995.

....of resources and the selection of a configuration for the system. This process, due to the conflicting nature of the requirements involved, is a non trivial task. In order to better understand the process of negotiation of QoS, first we present the life cycle of a multimedia system as proposed by [9]. This life cycle is divided into three phases: ffl Establishment phase: where the resources are allocated for the session; ffl Management phase: where the resources are used and managed; ffl Clearing phase: where the resources are released back to their managing entities. The establishment ....

A. Hafid and G. v. Bochmann, An Approach to Quality of Service Management for Distributed Multimedia Systems, International Conference on Open Distributed Processing (ICODP-95), Australia, Feb. 1995, pp. 319-340.

....derived for establishing communication between a source and a destination in a network. In this paper we propose a QoS Policy based routing management architecture appropriate for heterogeneous, multi domain, multi technology networks. Several architectures have been proposed in the literature [3 10] for QoS guarantees of multimedia applications over ATM networks. ATM technology that plays a central role in the integration challenge, highly relies on the statistical multiplexing discipline. The conditions under which statistical multiplexing can work efficiently in an ATM network are an ....

.... the collective effect of service performances which determine the degree of satisfaction of a user of the service . In other words QoS deals with the perceived characteristics of a service from the user s point of view. Representative proposals of QoS frameworks and architectures can be found in [3 10] . We define a QoS framework that supports the requirements of our environment in which QoS is specified as a set of constraints. Two general classes of constraints are specified. The first class is a description of the type of service requested by domain A domain C D1 ATM D2 SDH D3 ATM ....

A.Hafid and G.v.Bochmann. "An Approach to Quality of Service Management for Distributed Multimedia Applications", In Proceedings of the Third IFIP International Conference on Open Distributed Computing, Brisbane, Australia, February 1995

....is derived for establishing communication between a source and a destination in a network. In this paper we propose a QoS Policy based routing management architecture appropriate for heterogeneous, multidomain, multi technology networks. Several architectures have been proposed in the literature [3 10] for QoS guarantees of multimedia applications over ATM networks. ATM technology that plays a central role in the integration challenge, highly relies on the statistical multiplexing discipline. The conditions under which statistical multiplexing can work efficiently in an ATM network are an ....

.... the collective effect of service performances which determine the degree of satisfaction of a user of the service . In other words QoS deals with the perceived characteristics of a service from the user s point of view. Representative proposals of QoS frameworks and architectures can be found in [3 10]. We define a QoS framework that supports the requirements of our environment in which QoS is specified as a set of constraints. Two general classes of constraints are specified. The first class domain A domain C D1 ATM D2 SDH D3 ATM bd11 bd12 bd21 bd22 bd31 bd32 ad31 34Mb s 34Mb s 2 Mb s domain ....

A.Hafid and G.v.Bochmann. "An Approach to Quality of Service Management for Distributed Multimedia Applications", In Proceedings of the Third IFIP International Conference on Open Distributed Computing, Brisbane, Australia, February 1995.

....and Management QoS negotiation is the process of allocating resources in order to attend the application s demands. QoS management is the process where the allocated resources are monitored, renegotiated, accounted and released. A typical multimedia session is divided into three phases [7]: Establishment: where the resources are allocated for the session; Management: where the resources are used and managed; Clearing: where the resources are released back to their managing entities. The establishment phase is characterized by the following steps: QoS specification: ....

A. Hafid and G. Bochann, "An Approach to Quality of Service Management for Distributed Multimedia Applications", International Conference on Open Distributed Processing (ICODP'95), Australia, Feb. 1995, pp. 319-340.

....of resources and the selection of a configuration for the system. This process, due to the conflicting nature of the requirements involved, is a non trivial task. In order to better understand the process of negotiation of QoS, first we present the life cycle of a multimedia system as proposed by [9]. This life cycle is divided into three phases: ffl Establishment phase: where the resources are allocated for the session; ffl Management phase: where the resources are used and managed; ffl Clearing phase: where the resources are released back to their managing entities. The establishment ....

A. Hafid and G. v. Bochmann, An Approach to Quality of Service Management for Distributed Multimedia Systems, International Conference on Open Distributed Processing (ICODP-95), Australia, Feb. 1995, pp. 319-340.

....the HCI that presents the video data to the user. The cooperation of all elements establishes a QoS that is recognized from a human user at the HCI. Therefore, QoS considerations have to include all elements of multimedia systems. First indications of relations between QoS and DMSs can be found in [12], 16] 26] and [31] However, the relevance of DMS aspects for QoS in multimedia systems has not been broadly recognized. This is reflected in emerging architectures, like the QoS Architecture from Lancaster University [3] the End System QoS Framework from Washington University [9] or the QoS ....

Hafid, A. Bochman, G. v.: "An Approach to Quality of Service Management for Distributed Multimedia Applications ", in: "Open Distributed Processing Experiments with Distributed Environments", Raymond, K., Armstrong, L. (Editors), IFIP, Chapman & Hall, 1995, pp. 334-345

....in the underlying infrastructure. QoS will in particular be supported through an introduction of mechanisms in the DBS context as described in section 5. 5 Quality of Service in Distributed Multimedia Database Systems First indications of relationships between QoS and DBSs can be found in [12], 15] 32] and [34] However, the relevance of DBS aspects for QoS in multimedia systems has not been broadly recognized. This is reflected in the emerging architectures, like the QoS Architecture from University of Lancaster [8] the End System QoS Framework from Washington University of ....

Hafid, A. Bochman, G. v.: An Approach to Quality of Service Management for Distributed Multimedia Applications, Proc. of Open Distributed Processing Experiments with Distributed Environments, Raymond, K., Armstrong, L. (Editors), IFIP, Chapman & Hall, 1995, pp. 334-345

....It provides specific support for connection management, flow control, congestion avoidance, segmentation, reassembling and routing making similar functionality in transport protocols redundant. Several approaches have been developed addressing the enhancement of architectural frameworks with QoS [1, 5, 11, 12, 10, 6, 4]. But current architectural frameworks lack a QoS based application programming interface (API) and transport mechanisms that support end to end QoS [12] Hence applications use application level protocols to take care of their data and mostly negotiate their demands directly with the network ....

A. Hafid and G. v.Bochmann. An approach to quality of service management for distributed multimedia applications. In Third IFIP International Conference on Open Distributed Computing, Brisbane, Australia, 1995.

....and resources as well as to optimize resource utility. 3. 2 Platform Related Part QoS issues in networks, end to end protocols, and operating systems have been discussed in several publications (see chapter 2) First indications of relations between QoS and data management systems can be found in [24], 35] 52] and [56] However, the relevance of data management system aspects for QoS in multimedia systems has not been broadly recognized. Therefore, we focus our discussion in this section on the influence of data management systems on QoS. The term data management system describes a ....

Hafid, A. Bochman, G. v.: "An Approach to Quality of Service Management for Distributed Multimedia Applications", in: "Open Distributed Processing Experiments with Distributed Environments", Raymond, K., Armstrong, L. (Editors), IFIP, Chapman & Hall, 1995, pp. 334-345

....QoS, to control the session QoS during the active phase and to clear the session when requested by the user or because of service provider problems, e.g. network congestion. In other words, to support multimedia applications requirements, QoS management functions are needed during the three phase [HAF95] Figure 5 shows (1) the set of entities required to establish new configurations and to adapt the established configurations when QoS violation occurs, and (2) the interactions flows among those entities. The negotiation model corresponds to the model proposed in Section 3. In the following we ....

A.Hafid and G.V.Bochmann, An Approach to Quality of Service Management for Distributed Multimedia Applications, To Appear in the Third International Conference on Open Distributed Processing, Brisbane Australia, February 1995

....for the Components formance behaviour of the different services currently supported and the different components. Thus the QoS manager can take suitable decisions to support new service requests with desired QoS, to deal with QoS violations, and more generally to perform management functions [HAF95a]. Based on the information received from domain QoS managers and QoS agents (it is directly managing) the QoS manager takes the decisions and delegates the corresponding tasks to specific management entities. The latter send the required primitives to the concerned QoS agents directly or by means ....

A.Hafid and G.V.Bochmann, An Approach to Quality of Service Management for Distributed Multimedia Applications, in Proceedings of the Third IFIP International Conference in Open Distributed Processing, Brisbane, Australia, February 1995

No context found.

A. HAfiD and G. Bochmann. An Approach to Quality of Service Management in Distributed Multimedia Application: Design and Implementation. Multimedia Tools and Applications, 9(2):167--191, 1999.

No context found.

A. HAfiD and G. Bochmann. An Approach to Quality of Service Management in Distributed Multimedia Application: Design and Implementation. Multimedia Tools and Applications, 9(2):167--191, 1999.

No context found.

A. HAfiD and G. Bochmann. An Approach to Quality of Service Management in Distributed Multimedia Application: Design and Implementation. Multimedia Tools and Applications, 9(2):167--191, 1999.

No context found.

A.Hafid and G.V.Bochmann, An Approach to Quality of Service Management for Distributed Multimedia Systems, International Conference on Open Distributed Processing (ICODP-95), Australia, Feb 1995, pp 319-340.

Online articles have much greater impact   More about CiteSeer.IST   Add search form to your site   Submit documents   Feedback  

CiteSeer.IST - Copyright Penn State and NEC