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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 cellular systems are expected to support multiple services with guaranteed Quality of Service(QoS). But, the ability of wireless systems to accommodate expected growth of traffic load and broadband services is limited by available radio frequency spectrum. Call Admission Control (CAC) is one of the resource management functions, which regulates network access to ensure QoS provisioning...
The mobile cellular systems are expected to support multiple services with guaranteed Quality of Service(QoS). But, the ability of wireless systems to accommodate expected growth of traffic load and broadband services is limited by available radio frequency spectrum. Call Admission Control (CAC) is one of the resource management functions, which regulates network access to ensure QoS provisioning...
Wireless Mesh Network (WMN) is considered to be an effective solution to support multimedia services in last miles due to their automatic configuration and low cost deployment. The main feature of WMNs is multi-hope communications which may result in increased region coverage, better robustness and more capacity. Implemented on limited radio range wireless media, WMNs bring about many challenges such...
The following topics are dealt with : computer networks; IP networks; optical transmission; ATM networks; WDM system; wireless LAN; high speed Internet; ad hoc networks; wireless sensor networks; heterogeneous networks; bluetooth technology; personal communication system; broadband communication; 3G and 4G networks; multimedia communication; CDMA system; OFDM technology; communication protocol; spread...
Emerging multimedia applications over mobile devices are becoming very popular, especially over infrastructure wireless networks such as cellular and WLANs. However, providing this kind of services over infrastructure-less networks like ad hoc networks presents many additional problems. One of these problems is how to share resources fairly among the users involved. In this article we propose a QoS...
Microcellular network will have to become a proper choice for broadband mobile network in future mobile multimedia due to its high re-use radio resource. This paper discusses packet multiplexing control of connected micro-cells as a virtual single cell to support fast handover in such a micro-cell network. Adjacent cells are grouped into a multicast group to create an LMC (Logical Macro Cell) and...
Tremendous efforts have been conferred towards the congestion control concern in mobile wireless networks while dealing with maximizing both throughput and fair bandwidth allocation. Unfortunately, this is made limited by the variable and unpredictable behaviour of such networks. In this paper we propose a new congestion control mechanism for multimedia traffic in mobile wireless networks. Our proposed...
Next Generation Networks (NGN) are envisaged to see a vast and inevitable convergence of diverse multimedia and mobile services with versatile bandwidth utilities. As such, a design challenge for NGN is to allow efficient rate allocation without compromising Quality of Service (QoS) provisioning to any service and thereby enable a global welfare gain. However, the traditional rate allocation schemes...
The mobile cellular systems are expected to support multiple services with guaranteed quality of service (QoS).But, the ability of wireless systems to accommodate expected growth of traffic load and broadband services is limited by available radio frequency spectrum. Call admission control (CAC) is one of the resource management functions, which regulates network access to ensure QoS provisioning...
We propose a new framework called dynamic adaptive quality of service (DAQoS) to guarantee the quality of service (QoS) of multimedia traffic generally classified as Constant Bandwidth Service (CBS) and variable Bandwidth Service (VBS). DAQos implements a traffic-based admission control, bandwidth reallocation and reservation schemes to support multimedia traffics. The objectives that DAQoS framework...
The IP multimedia subsystem (IMS), originally designed by 3GPP and later updated by 3GPP, 3GPP2 and TISPAN, presents itself as an architectural framework that allows the convergence of the Internet, wireless and wireline networks and a global platform for the delivery of IP multimedia applications in next generation networks (NGN). One of the most used services to test IMS capabilities is push-to-talk...
In mobile networks each type of services has distinct characteristics and QoS requirement. The important issues in 3-G N/W are to prepare a framework for multi-class services to perform call admission and handoff efficiently. The available call admission control (CAC) and handoff techniques in mobile network have considered only single class of service or have touched value of few classes but not...
In this paper, we investigate the call admission control (CAC) policy of a single cell in multimedia wireless networks with reservation channel scheme (RCS) for different classes of calls. Arrival process of each class of calls is assumed to be a Poisson process, the service time of each call is exponentially distributed. Admitting a call would bring a reward. However, if the reserved channels for...
Ubiquitous and efficient multicast data delivery service is essential to the success of large-scale group communication applications. In this framework, congestion control through ubiquitous networks is a hot topic for multicast real time protocols. In this paper, authors present specification and implementation of simulate TCP's AIMD with rate-based (STAIR), a multicast congestion control mechanism...
In this manuscript, we propose a mobile communication system having devices processing control and traffic calls in a radio access network and a method for controlling call processing load of the devices to evenly distribute call process load to respective devices and to process a call having the highest priority among priority-based quality of service(QoS) calls. With our proposed method, we present...
In this paper, we propose a network architecture and call control procedure (3G-CS integrated network call control procedure based on IMS ) that enable control based on an IP multimedia subsystem (IMS) capable of providing diverse services and building an economic network upon securing service inheritance based on existing user equipment (UE) for third generation circuit switch (3G-CS) users.
In order to ensure that the interference-limited multimedia code division multiple access mobile communication systems operate stably and reliably, a novel fast adaptive call admission control (FACAC) algorithm for wide-band code division multiple access air interface is introduced. The proposed algorithm operates a threshold comparison, which integrates many factors that affect the decision accuracy...
Providing multimedia services with QoS guarantees in next generation wireless cellular networks poses great challenges due to the scarce radio bandwidth. Therefore, the demand for effective and careful resource allocation is immensely needed. In this paper, we combine call admission control (CAC) and adaptation bandwidth allocation (ABA) algorithm into a novel framework, which we call adaptive QoS...
This paper studies and analyze two call admission control (CAC) schemes in multimedia cellular wireless networks. These call admission control algorithms are studied for different network configurations. These configurations include, employing the queuing techniques for voice handoff with finite lifetime, differentiating between voice and data calls in terms of the average channel holding time, data...
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