The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents the evaluation of an IP-multicast push download service for personal multimedia devices. The service under study uses residual bandwidth in communication networks (in this case, terrestrial broadcast) to push multimedia content to storage capacity in personal multimedia devices. The service has been evaluated through an application prototype for mobile TV systems. Results show...
3GPP has defined a Multimedia Broadcast and Multicast Service (MBMS), which is a major enhancement in the downlink of the 3G standard. The focus of MBMS is on the efficient management of radio and core network resources while reusing as much existing functionality as possible. On the other hand, Network Coding has been proved that can achieve the throughput capacity of an arbitrary multicast session...
Mobile WiMAX access network is being developed to support various multimedia services such as mobile Internet Protocol Television (IPTV), mobile Video-on-Demand (VoD), and mobile internet services. This mobile network is a shared radio medium which utilizes a point-to-multipoint method, where one base station (BS) can be connected to many mobile stations (MS). That is to say that a mobile IPTV viewer...
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...
As the fast growth in the development of the related technologies, IEEE 802.11-based wireless mesh networks (WMNs) will be widely deployed as the access networks in community or campus environments. In this kind of WMNs, the playback of multicast streaming video (such as IPTV) could be discontinued due to the handoff process of the mobile stations. In this paper, practical system architecture for...
In this paper, we investigate the performance of multicast and broadcast services (MBS) in mobile WiMAX systems. We develop an analytical model for the session blocking probability and the session disruption probability. Numerical results are given to demonstrate the effects of session arrival rate and session duration.
In this paper, mobile multicast mechanism based on IEEE 802.21 MIH (Media Independent Handover) for efficient network resource usage is proposed. Proposed mechanism supports the efficiency of network resource usage and fast multicast handover. The proposed architecture adopts multicast manager concept to MIH framework in order to efficiently perform mobile multicast handover, and adds the new MIH...
In this paper fast mobile multicast mechanism based on IEEE 802.21 MIH (Media Independent Handover) is proposed. We solve long multicast handover delay time caused by L3 movement detection mechanism of the existing mobile multicast methods. The proposed architecture adopts multicast manager concept to MIH framework in order to efficiently perform mobile multicast handover, and adds the new MIH messages...
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...
Mobile communications are spreading at a fast pace, from telephony to vertical applications such as healthcare, transportation or energy. In the case of transportation, their target is usually a limited geographical area. Geographical networking is currently under study, with proposals for identifying the target area by adding a geographical enhancement to the IP protocol. In this paper, we propose...
Broadcast and multicast services (BCMCS) in CDMA2000 wireless telecommunications networks restrict high- quality multimedia services to their intended recipients by encrypting content. The air specification of BCMCS includes the advance encryption standard (AES) block cipher in the security layer of the broadcast protocol suite. We surveyed the AES block cipher algorithm and characterized the time...
The 3GPP Multimedia Broadcast and Multicast Service (MBMS) for mobile networks enables the efficient distribution of files to a large audience using point-to-multipoint transmission. MBMS provides the so called file delivery service for this purpose. Residual errors are not tolerable in the received data of the file. Application Layer Forward Error Correction (AL-FEC) and transmit power need to be...
Scalable video codec (SVC) is an extension to the H.264/AVC that provides support for different types of scalability. 3GPP video services (e.g. multimedia broadcast/multicast services, packet-switched streaming service and conversational service etc.) may greatly benefit from the adoption of SVC. The latest 3GPP/3GPP2 standards have already begun to support for H.264/SVC. Due to high packet loss rate...
The following topics are dealt with: Ethernet simulation; signal processing theory; wireless communication; communication switching; routing; distributed communication; quality of service; peer-to-peer network; telecommunication security; VoIP; mobile networking; protocols; multimedia communication; multicast communication; network management; and reliability.
With the emergence of the wireless communication technology, it is important to consider the service supporting mobile node. Especially, new multimedia services such as mobile IPTV need multicast technology for efficient delivery of service. Various multicast technologies with use of mobile IP have been suggested, but most of those technologies cannot solve the deployment problem. As an alternative...
Seamless mobility support and efficient network resource utilization is the key to the performance of mobile multimedia services. Currently, the PMIP (Proxy Mobile-IP) and the IMS (IP Multimedia Subsystem) are considered as the primary means to this end, mostly focusing on unicast applications (e.g., voice over IP). In this paper, we extend the application scope to multicast services and propose a...
The spread of multimedia data has drastically differentiated the current landscape of Universal Mobile Telecommunication System (UMTS) networks, posing the need for further enhancements in its Radio Resource Management (RRM) strategies. Introduced in 3rd Generation Partnership Project (3 GPP) Release 6, the Multimedia Broadcast/Multicast Services (MBMS) framework aims at the efficient usage of network...
In Universal Mobile Telecommunication System (UMTS), the downlink capacity is limited by the base station transmission power. Therefore, power control plays an important role to minimize the transmitted power shared among unicast and multicast users within a cell. In Multimedia Broadcast/Multicast Service (MBMS), power control targets to the efficient utilization of radio and network resources. However,...
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...
BCMCS (broadcast and multicast services) greatly increase the capacity of CDMA2000 mobile networks for multimedia broadcasting, but only require minor changes to existing radio and core network protocols. To provide high-quality multimedia services over error-prone wireless networks, we need to control delay, because it is one of the most important QoS parameters for multimedia applications. We identified...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.