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Transportable nodes in a healthy and demanding network set-up of Mobile Adhoc Network (MANET) are self-governing with self-configurable potential due to high occurrence of topology alteration and changeable rescheduling of the network mechanism during data communication. Due to simplicity of set up, the energetic networking system in MANET is very victorious in conditions where it is complicated to...
This paper presents some end to end measurements of multimedia services carried out in the frame of LTExtreme project. We provide some understanding of the main parameters and the role of the different protocol layers in the achievement of the desired Quality of Experience (QoE). The trade-offs related to the adaptation algorithms that have been tested in a demonstrator are discussed, showing that...
Device-to-device (D2D) communication is known as a promising way to cope with the growing mobile video traffic, which may suffer from the short duration caused by the limited energy supply. In this paper, we propose a practical D2D cooperation framework based on distributed optimization to extend the video transmission duration. In the multi-path multi-hop D2D communication scenario, we effectively...
The Long Term Evolution (LTE) network provides high bandwidth, flexible modulation and coding scheme for emerging mobile applications. The issues of power saving and quality of services are very critical for the success of deployment of mobile applications. This paper presents a buffer aware scheduling approach to reduce power consumption while maintaining the receiving quality of video streaming...
The current 2G and 3G network infrastructures were not originally designed with multimedia transmission in consideration. Unlike data transmission, multimedia has significantly different Quality of Service requirements. It requires significantly higher bandwidth in comparison with data transmission. Multimedia transmission over handheld devices (such as mobile phones) poses further challenges in maintaining...
In the "Youtube Era", mobile consumption of video, such as Video on Demand (VoD) and User Generated Content (UGC), has been steadily increasing. However, mobile networks are showing to be unprepared for such phenomenal traffic volume, whereas the devices' multiple interfaces are being exploited to address this problem. As such, the interest in offloading techniques has significantly increased,...
Increasing demands of mass multimedia services require the reorganization of conventional networking infrastructures. However, the deployment of new infrastructures entails enormous cost and much time. To support high volume multimedia traffic in consumer networking environments, we develop a novel cooperative networking system with in-network storage via wireless access points (APs). By fully utilizing...
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...
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...
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...
For MAC (Media Access Control) protocol not providing QoS(Quality of Service) guarantees. With the increase of multimedia sevices in wireless networks(for example:voice, video, etc), when the networks get crowded, real-time applications will decrease its performance. We proposed a wireless network algorithm for 802.11e, witch supports fixed nodes and mobile nodes, and also swiches and new connections...
This paper proposes a new mechanism, multi-connection from heterogeneous networks in IP multimedia subsystem (IMS). With the appearance of IMS, multimedia service has become an important service, which needs high bandwidth and low delay. But the network, which can match these features simultaneously, doesn't exist. In order to provide robust, high-quality services in IMS, we utilize the character...
With the increasing popularity of accessing multimedia services over different wireless networks, researchers have been trying to develop different adaptive multimedia mechanisms in order to mitigate the impact of fluctuating radio resources. This paper considers the case when multiple users stream video over the same IEEE 802.11b WLAN using a newly proposed Signal Strength-based Adaptive Multimedia...
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...
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...
To provide high speed connections for a large numbers of users in moving vehicles, a new broadband mobile network should be considered to go on the research to complement the lack of high data rate support from the existing 3G. Following this trend, authors introduce a design of a broadband microcellular network MM-MAN (mobile multimedia metropolitan area network) that can offer mobile users in a...
We study traffic routing in wireless mesh networks, where most of the nodes are fixed and few of them are mobile. We assume real-time multimedia stream communications between a fixed server and mobile nodes. In particular, through simulation we investigate the performance of the BATMAN protocol and compare it against that of some of the most representative schemes for routing in ad hoc and mesh networks...
The conventional opportunistic scheduling algorithm in cognitive radio networks among secondary users is based on the reported state values to the central controller. However, with the increasing programmability of network users, a malicious user can strategically declare a false state in order to gain an unfair share of resources. How to ensure all the users revel their true information becomes an...
Mobility has become a mandatory feature of the future Internet as mobile computing gains increasing popularity among Internet users. The rapidly evolving heterogeneous wireless environment provides a variety of communication resources for the mobile host. In order to fully benefit of these wireless access networks an efficient and quality oriented mobility management system has to be employed. This...
In this paper, we investigate the performance of MC-CDMA with bi-orthogonal keying employing Generalized Symbol-rate-increased (GSRI) Pragmatic Adaptive Trellis Coded Modulation (ATCM). It is advantageous that the GSRI TC-MPSK can arbitrarily set the bandwidth expansion ratio (coding rate) and higher coding gain than the conventional pragmatic TCM scheme can be obtained. By changing the modulation...
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