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With the growth of bandwidth adaptive applications in wireless and mobile networks with different QoS requirements, there is an urgent need for an adaptive bandwidth management scheme which makes use of the flexible bandwidth requirements of these new traffic classes. In this paper, a Call Admission Control (CAC) strategy is proposed based on full consideration of the adaptivity of multimedia services...
The mobile networks must have an ability to maintain an acceptable level of service during network failures to provide high resilience against service failures. This paper presents an eccentric fault tolerant path grouping scheme that can achieve mobility independent Quality of Service (QoS) guaranteed services in Generalized Multiprotocol Label Switching (GMPLS) based wavelength-switched optical...
This paper proposes a learning approach to solve adaptive Connection Admission Control (CAC) schemes in future wireless networks. Real time connections (that require lower delay bounds than non-real-time) are subdivided into hard realtime (requiring constant bandwidth capacity) or adaptive (that have flexible bandwidth requirements). The CAC for such a mix of traffic types is a complex constraint...
For mobile multi-hop wireless network, IEEE 802.16j/MR network can not only supply large area wireless deployment, but also provide high quality network service to mobile users. In this paper, we will be focusing on QoS supporting for mobile users in the IEEE 802.16-MR network. The probability of a mobile user who visits a RS is known beforehand. With the same visiting probability of each RS and the...
Quality of Service (QoS) of video streaming service over wireless and mobile network is determined by many intermingled factors. Some of the factors can be adjusted. Video resolution, audio rate, and bandwidth are among of them. Other factors are not fully controllable such as network throughput, delay, and packet lost probability. In order to increase user satisfaction, efforts to make better quality...
The IEEE 802.16e standard, also known as mobile WiMAX, has emerged as an exciting mobile wireless communication technology that promises to offer both high throughput and guaranteed quality of service (QoS). Call admission control (CAC) scheme serves as a useful tool for WiMAX, which ensures that resources are not overcommitted and thereby, all existing connections enjoy guaranteed QoS. Existing CAC...
We discuss the design and implementation of an IP Multimedia Subsystem (IMS) service plane enabled heterogeneous network. In the network the user profile management and multimedia application activities, such as users' service subscription, authentication, authorization and provisioning are handled by a general IMS service plane. This service plane further interworks with lower layer network control...
Wireless mobile multimedia communications are being greatly increased in the number of users, diversity of applications and interface technologies. Future mobile based Internet will accommodate various wireless technologies and also will need to provide sufficient end-to-end QoS (Quality of Service) mechanism to provide enhanced user's satisfaction. In this paper, we propose a new adaptive end-to-end...
It is heterogeneous wireless Networks (HWN) aggregation foundation for vertical handoff (VHO), and that is key characters of core technology for multi-network aggregation. The currently mechanism handoff trigger is analyzed, a best network selected (BNS) framework is designed, the parameters of network terminal and user terminal of effecting VHO algorithm, and which also include norm of capable parameters,...
Recently, due to the prevalence of various mobile devices and broadband wireless networks, there has been a significant increase in interest and demand for multimedia streaming services such as the mobile IPTV. In order to deploy a mobile IPTV service in wireless broadband networks, offering users efficient wireless resource utilization and seamlessly offering Quality of Experience (QoE) are important...
The last ten years have witnessed explosive growth in the number of subscribers for mobile telephony and data services. However, the recent development of mobile broadband technology comes at a significant energy cost. As subscriber levels saturate, the operating costs of such a network need to be reduced significantly to maintain competitiveness. The carbon footprint will become an increasingly important...
In this paper, we extends bandwidth balancing technique in wired networks to operate in mobile ad hoc networks (MANETs). In bandwidth balancing in Distributed-Queue-Dual-Bus (DQDB), different nodes occupy the same channel, and information about the bandwidth is transferred between nodes in the unused bandwidth. Similarly, in wireless networks, the capacity on a channel is shared by several sources...
An ad hoc network is a collection of computers (nodes)that cooperate to forward packets for each other over a multihop wireless network. Users of such networks may wish to use demanding applications such as Voice over IP, videoconferencing, and streaming media when they are connected through an ad hoc network. Because over provisioning, a common technique in wired networks, is often impractical in...
This paper proposes efficient analytical models to dimension the required transport bandwidths for the Long Term Evolution (LTE) access network for the elastic Internet traffic (which is carried by the TCP protocol). The dimensioning models are based on the use of Processor Sharing queuing theory to guarantee a desired end-to-end application QoS target. For validating the analytical dimensioning models,...
Despite recent interests in developing vertical handoff decision algorithms, an essential component of the architecture of the next generation heterogeneous wireless networks, very few studies have so far reported any meaningful comparative performance analysis. This paper attempts to fill this gap in the literature by presenting a comprehensive study on the performance of three vertical handoff decision...
Future wireless access will involve a variety of integrated and interworking technologies. Depending on the conditions (e.g., the specific application, the quality of service requirements, the user mobility) each session will be served through the most suited access network; following some event, there will be a variation of the access technology, which is called vertical handover. Although the use...
This paper intends to propose a novel handover algorithm to balance the load of the layers in a multi-reuse scenario. Each layer works independently from each other and it has its own scheduling process, coverage and mobile stations attached. The algorithm proposed balances the resources among layers by moving mobile stations from one to another layer according their QoS requirements and channel condition...
An admission control Algorithm must organize among flows and should afford assurance of how the medium is shared between nodes. In a wired network, nodes can keep an eye on the medium to see how much bandwidth is being used by the network. On the other hand, in an Ad-Hoc network, during communication nodes possibly will use the bandwidth of neighbouring nodes. Consequently, the bandwidth consumption...
The emerging IEEE 802.16e Broadband Wireless Access (BWA) network is one of the most promising solutions to provide ubiquitous wireless access with high data rates, high mobility, and wide coverage. In the paper we develop a novel Connection Admission Control (CAC) algorithm for IEEE 802.16e mobile BWA networks to simultaneously improve the utilization efficiency of network resources and guarantee...
The emergence of multimedia applications demands multicasting in MANETs. For such applications QoS provisioning is a complex and challenging issue. This paper proposes a QoS aware multicast routing scheme uses a set of static and mobile agents and ensures QoS guarantees in terms of bandwidth reservation, delay constraint, delay-jitter constraint and packet loss to multicast session. Here the mobile...
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