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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...
Next generation of wireless broadband network such as WiMAX MMR networks and LTE Advanced support high quality multimedia services with high data transmission rate. Most of the current broadband operates at high frequency and thus has limited transmission range. Multi-hop relaying technology is seen as an efficient solution that could enhance coverage and improves system capacity. However, overall...
There is an increasing trend of accessing multimedia and web services embedded with Presence service over the mobile, which have driven the telecom operators to look for the new and better ways to provide such services. Presence service puts a lot of load on the IMS network and it can contribute 50% or more to the total signaling load which can increase end-to-end delay. In this paper we have analyzed...
In the last few years, we have witnessed an explosion of IP connectivity demand, translated into a rapid development of the corresponding technologies in the wireless access network domain. IP services provision anytime and anywhere becomes very challenging and is seen by the mobile operators as a major opportunity for boosting the average revenue per unit. The further success of IP services deployment...
The IP Multimedia Subsystem (IMS) delivers multimedia services using IP integrated voice and packet services. IMS also provide users seamless connectivity. In this paper a location tracking system for IMS is developed track the location of a device. The existing testbed that supports Session Initiated Protocol (SIP) had been developed in the UTM MIMOS Coe, Universiti Teknologi Malaysia. However it...
In the next generation of wireless mobile communications, it can be visualized that heterogeneous networks including 3G cellular networks and WLAN are demanded to co-operate user-friendly in a seamless manner. Based on mobility of users, optimal session admission control for multimedia services is very important for improving performance in integrated 3G/WLAN networks. In this paper, a new dynamic...
In realistic mobile heterogeneous environment, the quality perceived by user is variable and dependant on following major factors: available bit rate variation, packet loss and latency. Even though QoS management is enabled in most modern telecommunication systems, it does not ensure the actual end-user perceived quality of service level. Therefore, to make sure that operator follows SLA provisions,...
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 IP Multimedia Subsystem (IMS) is considered the current Service Delivery Platform standard for providing multimedia services in Next Generation Networks (NGN). Although fleet management services are traditionally focused on voice communications, they are evolving towards broadband multimedia ones. For this reason, this paper presents an open IMS-based platform that provides advanced multimedia...
This paper proposes a dynamic Probabilistic Priority Adaptive Time-Threshold-based bandwidth allocation Scheme for Multimedia services (PPATTSM) in cellular networks. Because future data service will occupy a large portion of all services in next generation mobile networks and forced termination of an ongoing call is clearly less desirable than blocking of a new call attempt, there is much significance...
This paper discusses the necessary media processing functional requirements for new multimedia services in core networks, and proposes an open system architecture to addresses them. The system architecture provides efficient transcoding, rate adaptation, filtering, scaling and other functions needed for video communications, IPTV and 3DTV applications over networks.
With the important advent of multimedia services and the ubiquity of computing environments, the concept of context-awareness in services access and provisioning is getting crucial. Services, especially the multimedia ones, must perform automatically actions/operations to adapt the delivered content to the user expectations and his environment capabilities, thus ensuring the best quality of experience...
In this paper, the issue of mobility and roaming in Pay-TV systems are studied to propose the novel multidomain universal service delivery architecture to provide legitimate subscribers with a ubiquitous access to multimedia services. The paper also considers other cooperating IP/Mobile and Broadcast architectures to add flexibility and mobility in service provisioning to a certain geographical area...
The IP Multimedia Subsystem (IMS) defined by the 3rd Generation Partnership Project (3GPP) and 3GPP2 provides a platform for the provision of multimedia services with quality of service (QoS). In addition, this service architecture allows third-party vendors to create advanced multimedia and multisession services across wireless and wireline network access. The Session Initiation Protocol (SIP) supports...
This paper is to develop a multimedia tour guide system based on resource-limited mobile phones with location-based services without any other equipment. General mobile phones are popular nowadays and possible to be facilitated with advanced mobile services. By integrating multimedia clips and geographic information data together on the palm-sized devices, the tour guide system can acquire the location...
The demand for multimedia services is increasing and users expect rich services at high quality levels, even while on the move and connected via different wireless networks. This paper proposes a novel signal strength-based adaptive multimedia delivery mechanism (SAMMy) that makes use of the IEEE 802.11k standard when dynamically adjusting multimedia delivery based on estimated signal strength and...
With rapid development of wireless technologies, current user mobile devices can support to access various wireless networks such as Wi-Fi 802.11 Wireless LANs, 3G cellular networks, etc. Due to requirements of multicast mobility for multimedia services, the convergence of wired and wireless network has been a necessary trend in Next Generation Networks (NGN). The issues of multicast and mobility...
The Eureka-ITEA2 WellCom project addresses issues related to the creation, delivery and management of advanced multimedia applications and services in the context of distributed home environment. To enable the delivery of such services with the required quality and security, WellCom proposes to push a part of the service logic as close as possible to the end-user. The paper presents some results of...
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...
High quality and high speed multimedia services will be required in the next generation mobile communications. To satisfy these services, powerful error correction techniques are used. ARQ (auto repeat request) techniques, aspects of the throughput, and FEC (forward error correct) techniques have disadvantages in terms of reliability. H-ARQ (hybrid auto repeat request) systems have been studied extensively...
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