M. Naghshineh and M. Willebeek-LeMair. End-to-end QoS provisioning multimedia wireless/mobile networks using an adaptive framework. IEEE Communications, 35(11):72--81, November 1997. 22  Home/Search   Document Not in Database   Summary   Related Articles   Check

....meet these objectives in a coarse grained manner. Finally, we note that during the overload periods, some established sessions will obtain a reduced service, and be forced to temporarily adapt to a lower bandwidth. Mechanisms and policies for adapting to such overload situations are developed in [9, 14, 18] for example, and are beyond the scope of this paper. 3 Backbone Network Router Router Router Mobile Unit Base Station Figure 2: System Model Throughout, we focus on a single QoS controlled class, and denote the available capacity or bandwidth of cell j to the users in the QoS class by C j ....

M. Naghshineh and M. Willebeek-LeMair. End-to-end QoS provisioning multimedia wireless/mobile networks using an adaptive framework. IEEE Communications, 35(11):72--81, November 1997. 22

.... However, providing system wide (i.e. end system and network) adaptive quality of service support for mobile multimedia communications is complex to realize in practice and not well understood by the community [20] Recently, a number of adaptive mobile systems [12] 9] 26] 29] 15] [22] have been proposed in the literature. However, few experimental systems exist today to assess the viability of the adaptive approach. We believe that there is a need to build adaptive mobile networking testbeds, study their behavior, and learn from these experiments in building more scalable ....

Naghshineh M., and M. Willebeek-LeMair, "End-to-End QOS Provisioning in Multimedia Wireless/Mobile Networks" IEEE Network, March 1997.

....found in wireless and mobile networking environments. However, providing systemwide (i.e. end system and network) adaptive QoS support for mobile multimedia communications is complex to realize in practice and not well understood by the community [2] Recently, a number of adaptive mobile systems [3 8] have been proposed in the literature; however, few experimental systems exist today to assess the viability of the adaptive approach. We believe that there is a need to build adaptive mobile networking testbeds, study their behavior, and learn from these experiments in building more scalable ....

M. Naghshineh and M. Willebeek-LeMair, "End-to-End QoS Provisioning in Multimedia Wireless/Mobile Networks," IEEE Network, Mar. 1997.

....network. The shadow cluster concept [34] uses a predictive resource estimation scheme to cope with QoS reservations on the network layer. A similar approach is taken by Oliveira et al. 43] They both do not consider any application adaptation possibilities. Naghshineh and Willebeek LeMair [41] propose a framework that bridges multimedia application and network needs. The multimedia stream is divided in several substreams with different QoS requirements. All components of the framework, i.e. network switches, access points, services and signaling, routing and control protocols, try to ....

M. Naghshineh, M. Willebeek-LeMair, End-to-End QoS Provisioning in Multimedia Wireless/Mobile Networks Using an Adaptive Framework, IEEE Communications, Vol. 35, No. 11, pp. 72-81, November 1997

....in a coarse grained manner. Finally, we note that during the overload periods, some established sessions will obtain a reduced service, and be forced to temporarily adapt to a lower bandwidth. Mechanisms and policies for adapting to such overload situations are developed in [GCM98, LB96, NWL97] for example, and are beyond the scope of this thesis. Throughout, we focus on a single QoS controlled class, and denote the available capacity or bandwidth of cell j to the users in the QoS class by C j . We assume that 7 while individual users transmit traffic at variable rate, their required ....

M. Naghshineh and M. Willebeek-LeMair. End-to-end QoS provisioning multimedia wireless/mobile networks using an adaptive framework. IEEE Communications, 35(11):72--81, November 1997.

....matured and gave birth to diverse multimedia services. In spite of these developments, the link bandwidth of wireless mobile networks is still a bottleneck. This scarcity in wireless resources motivates the adaptive multimedia services which can operate over a wide range of available bandwidth [1], 2] 3] 4] Originally, the concept of adaptive multimedia service was introduced in wired networks. In wired broadband networks like ATM, once a call is admitted to the network, a contract between the network and application is established. Then, they both try to maintain the contract ....

.... Bharghavan et al. 2] take into consideration service classes in the Internet and seek to exploit the CAC algorithm and the resource reservation scheme with the assumption of the continuous value of bandwidth; however, the real bandwidth values of adaptive multimedia is more likely to be discrete [1], 10] Das and Sen [3] assume the discrete values of adaptive multimedia and propose an optimal (from a cell s perspective) CAC and bandwidth adaptation algorithm by considering trade o between carried trac and degradation. Stamatelos and V. Koukoulidis [5] propose a CAC in a wireless ATM ....

M. Naghshineh and M. Willebeek-LeMair, \End-to-End QoS Provisioning in Multimedia Wireless/Mobile Networks Using an Adaptive Framework," IEEE Communications Magazine, Vol. 35, No. 11, pp. 72-81, Nov. 1997.

....be compared with the dropping of the connection altogether due to inability to maintain the required QoS level, a solution which in many cases may be less desirable. An even more elaborate solution can be found in cooperative QoS management strategies involving both the application and the network [Nag97]. The network in general is requested to be application aware, in the sense that it knows the application s needs (as specified in the QoS profile) and tries to meet them. The idea here is to also make the application aware of what happens in the network, giving it a chance to react and adapt to ....

M. Naghshineh, M. Willebeek-LeMair, "End to end QoS provisioning multimedia wireless/mobile networks using an adaptive framework," IEEE Communications Magazine, special issue on "Introduction to mobile and wireless ATM," Nov. 1997.

.... However, providing system wide (i.e. end system and network) adaptive quality of service support for mobile multimedia communications is complex to realize in practice and not well understood by the community [21] Recently, a number of adaptive mobile systems [16] 12] 28] 32] 18] [23] have been proposed in the literature; however, few experimental systems exist today to assess the viability of the adaptive approach. We believe that there is a need to build adaptive mobile networking testbeds that support the introduction of new adaptive services, study their behavior, and ....

M. Naghshineh, and M. Willebeek-LeMair, End-to-End QOS Provisioning in Multimedia Wireless/Mobile Networks IEEE Network, March 1997.

....periods, some established sessions will obtain a reduced service, and be forced to temporarily adapt to a lower bandwidth. Mechanisms and policies for Backbone Network Router Router Router Mobile Unit Base Station Figure 2: System Model adapting to such overload situations are developed in [11 13] for example, and are beyond the scope of this paper. Throughout, we focus on a single QoS controlled class, and denote the available capacity or bandwidth of cell j to the users in the QoS class by C j . We assume that while individual users transmit traffic at variable rate, their required ....

M. Naghshineh and M. Willebeek-LeMair. End-to-end QoS provisioning multimedia wireless/mobile networks using an adaptive framework. IEEE Communications, 35(11):72--81, November 1997.

....the delivery of hard quality of service guarantees unlikely. Next, user mobility can trigger the rapid degradation in the delivered service quality, e.g. during handoff. Third, wireless networks are typically bandwidth constrained in comparison to wireline networks. There is a growing consensus [1, 2, 3] that adaptive quality of service models present the only viable approach to addressing these challenges. Intrinsic scalable properties of multimedia content can be exploited when the desired resources are only partially available. By trading off quality with available bandwidth, new mobile ....

....services can be designed to intelligently adapt to fluctuating quality of service with minimal perceptual distortion. A number of proposals have recently emerged in the literature that address adaptive quality of service techniques at the transport and network layers of wireless networks [1, 2, 3, 4, 6]. In our previous work developing mobiware [6] explicit support is built into the transport and network systems for the delivery of multi resolution flows over the air interface. In this case the wireless access points support the transport of base and enhancement layers, and media scaling and ....

M. Naghshineh, M. Willebeek-LeMair, "End-to-End QoS Provisioning in Multimedia Wireless/Mobile Networks Using an Adaptive Framework", IEEE Commun. Mag., Vol. 35, No. 11, pp 72-81, Nov. 1997.

....the user s perceptible quality meaningful, is very much application specific. In this paper, we argue that future mobile systems should be capable of capturing and supporting application specific adaptation characteristics in a flexible and programmable fashion. Recently, a number of proposals [16, 19, 21, 27, 22, 24, 1] on adaptive mobile networking have begun to address some of these issues. However, many existing mobile network systems (e.g. mobile IP, mobile ATM, third generation cellular systems) lack the architectural flexibility to accommodate application specific adaptation needs in time varying mobile ....

M. Naghshineh, M. Willebeek-LeMair, "End-to-End QoS Provisioning in Multimedia Wireless/Mobile Networks Using an Adaptive Framework", IEEE Commun. Mag., Vol. 35, No. 11, pp 72-81, Nov. 1997.

....techniques proposed in this paper. Stream multiplexing can improve the bandwidth efficiency for the delivery of a set of concurrent media streams that can not be further trimmed down using stream sharing. Stream multiplexing can also work with other streaming techniques, such as adaptive streaming [12, 13] in environments with fluctuating resource conditions, to improve their bandwidth efficiencies. We present a family of optimal multiplexing schedules that achieve the bandwidth lower bound. The multiplexing schedule is then mapped into individual per stream schedules that can be executed by the ....

M. Naghshineh and M. Willebeek-LeMair. End-to-End QoS Provisioning in Multimedia Wireless/Mobile Networks Using an Adaptive Framework. IEEE Communications Magazine, pages 72--81, Nov. 1997.

....dictates when and at what quality each multimedia object is transmitted. There has been considerable research on this topic. One common strategy has been a feedback based mechanism. Information about the current network condition is sent back to the sender, which in turn adjusts its sending rate [4,6,11,12]. Rate adjustment can also be carried out by the receiver, such as in [5] where a receiver adjusts its receiving rate by dynamically changing its subscription among a set of concurrent multicast groups. Typically, feedback based mechanisms are associated with rate adjustable or multi layered ....

M. Naghshineh and M. Willebeek-LeMair, "End-to-End QoS Provisioning in Multimedia Wireless/Mobile Networks Using an Adaptive Framework", IEEE Communications Magazine, November 1997.

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M. Naghshineh and M. Willebeek-LeMair, "End-to-end QoS provisioning in multimedia wireless/mobile networks using an adaptive framework," IEEE Commun. Mag., vol. 35, no. 11, pp. 72--81, Nov. 1997.

No context found.

Naghshineh M., and M. Willebeek-LeMair, "End-to-End QOS Provisioning in Multimedia Wireless/Mobile Networks" IEEE Network, March 1997.

No context found.

Naghshineh M., and M. Willebeek-LeMair, "End-to-End QOS Provisioning in Multimedia Wireless/Mobile Networks" IEEE Network, March 1997.

No context found.

Naghshineh M., and M. Willebeek-LeMair, "End-to-End QOS Provisioning in Multimedia Wireless/Mobile Networks" IEEE Network, March 1997.

No context found.

Naghshineh M., and M. Willebeek-LeMair, "End-to-End QOS Provisioning in Multimedia Wireless/Mobile Networks" IEEE Network, March 1997.

No context found.

Naghshineh M., and M. Willebeek-LeMair, "End-to-End QOS Provisioning in Multimedia Wireless/Mobile Networks" IEEE Network, March 1997.

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