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Real-time applications over wireless networks often suffers from jitter, delay and packet loss. The traditional techniques for error control are FEC (Forward Error Correction) and ARQ (Automatic Repeat Request). In this paper a hybrid FEC/ARQ mechanisms with limiting the slots number between the loss of the last retransmission of the original block n and the reception of block n + φ is analyzed in...
Mobile operators are today facing the daunting challenge of providing cheap and valuable services to ever more demanding customers. As a matter of fact, mobile standards have not yet really addressed this expectation of open, cheap and flexible web oriented internet access. As an alternative, we introduced an IP-centric QoS model mainly inspired by IP policies commonly found in fixed networks. In...
For the purposes of efficient network resource management and QoS (Quality of Service) support of different video services, this paper proposes a fine grained classification scheme for Internet video traffics based on hierarchical clustering. We study a number of QoS and network resource requirements related statistical features of some typical video applications and validate their effectiveness in...
Voice over Internet protocol (VoIP) transmits voice communication in the packet-based switching network that requires packets to be delivered in a steady timing and with low latency, jitter, packet loss and sufficient bandwidth. Ethernet passive optical network (EPON) is one of the best future-oriented next-generation access network technologies, which can use the strict dynamic bandwidth allocation...
The IP Multimedia Subsystem (IMS) is a kind of Multimedia business form and it is an architectural framework for delivering IP multimedia services. In order to increase flexibility and reliability, in this paper we propose a different perspective which maintains the existing IP Multimedia Subsystem (IMS) based signaling platform while processing flow via distributed SDN controllers. Software Define...
A real-time multimedia transmission requires the QoS guarantees to preserve the real-time character of the stream. Nowadays, we have several methods for QoS provisioning in IP networks. In this paper we propose a novel method for dynamic network resource allocation using the IP Traffic Flow Description option. Our solution deals with the problem of the trade-off between link utilization and the quality...
This paper presents an innovative control based Traffic Controller which provides at sharing a single resource, namely the available bit rate, among a set of IP flows characterized by different Quality of Service (QoS) requirements. The main novelty behind the proposed Traffic Controller is that it relies on an original control based approach which exploits a closed-loop architecture and a fuzzy tuner...
The research trends in computer and wireless communication networks are growingly facilitated with the emergence of various Network Simulation tools. Network simulation software enables users to model network behavior demonstrating the packet transmission behavior and interaction amongst the nodes. These models are further used to analyze and predict the behavior of a computer network on various devices...
The Voice over IP (VoIP) service demands high priority over other services and applications. Some constrains are associated with this real-time service, such as delay and throughput which need to be addressed before delivering to the customer. The mobility in IP networks is a demand that facilitates IP applications and services, especially in wireless networks. This paper demonstrates the performance...
QoS provisioning is one of the key challenges facing current as well as future Internet architectures. Its dependency on content recognition does not allow a straightforward support of QoS in the IP, host-centric, model. In contrast, Information-Centric Networking (ICN) offers native content identification in the network, which can be exploited to develop a common, elegant, framework for supporting...
The growth of new advanced services over Internet, including HD and 4K unicast video, made possible by the development of fixed and mobile broadband and ultra-broadband access, in turn poses important requirements on the evolution of IP transport networks. Sustainability of the Internet ecosystem in the presence of increasing traffic volumes, changing traffic patterns and more demanding application...
Basic requirements to the quality of service in LTE network, various real life use cases are considered. LTE provides basic IP connectivity on the platform of IMS. Mobile devices capable of using LTE network will need to support voice calling over the Internet protocol. Thus, VoIP is the first application considered. With the availability of a larger data pipe, another common application is viewing...
Quality of Service (QoS) is an important network performance parameter having significant impact on real time applications like VoIP, Interactive gaming and Video Streaming. Although IPv6 was designed to improve addressing, security and QoS in IPv4, services like Video Conferencing and VoIP with strong reliance and sensitivity towards delay and jitter pose a daunting challenge in today's packet based...
Service differentiation is known as on the classic and major tasks in IP networks. We propose a novel queuing method which benefits both “Less Impact Better Service” (LIBS) and fuzzy logic paradigms. LIBS leads us to a queuing method called non-congestive queuing, which prioritizes small packets when conditions permit to limit the delay impact of prioritization on congestive applications. In our proposed...
As one of the most popular topics in the Next Generation Network (NGN), Named Data Networking (NDN), a newly proposed network architecture centered on content data, targets on altering the existing communication protocol between Internet hosts. NDN uses data names rather than IP addresses for data transmission and re-designs the packet formats and the protocols between layers in order to substitute...
High quality wireless audio transfer is essential for external digital audio products. There are two kinds of methods for transferring audio data. One is using proprietary RF channel and protocol for reliable audio transfer, the other is using preexisting 802.11 WiFi Network. Audio transfer via WiFi network is more general and preferred method compared to proprietary wireless transfer. But when WiFi...
Now a days as compare to power resources power demand grows and energy cost is also increasing at constant rate. To reduce power consumption in entire network infrastructure lots of research developed. In this approach the solution to save energy is explain. In this approach Energy Saving IP Routing strategy is define. ESIR strategy work with Open Shortest Path First protocol. This strategy is useful...
The main challenge in the engineering of IP networks is the integration and support of a wide variety of applications and services combining voice, data, streaming, and VoD that have different traffic characteristics and require different levels of quality of service (QoS). The most important measures of QoS are the end-to-end delay, packet loss rate and delay variation or jitter. Any network design...
The mobile ecosystem is currently facing tremendous changes; in particular, the actual deployment of 4G will probably not be sufficient to totally fit the upcoming mobile data traffic explosion. This mismatch may be explained by the low marginal revenues expectable from mobile data compared to huge investments it requires. Consequently, congestion may appear soon in radio access networks, thus degrading...
With continuous shrinking in the size of deep sub-micron in this million transistor era, the interconnection of these hundreds and thousands of cores on a single chip is still constraint. Providing an efficient communication among these cores is a major challenge in the on-chip domain. Although hierarchical architecture has addressed most of the issues of the traditional approaches like point-to-point...
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