Advances in network management and switching technologies make dynamic bandwidth allocation of logical networks built on top of a physical network possible. Previous proposed dynamic bandwidth allocation algorithms are based on simplified network model. The analytical model is valid only under restrictive assumptions. Infinitesimal Perturbation Analysis, a technique which estimates the gradient...

Emerging multimedia applications require more bandwidth and strict QoS requirements. To meet these in wireless personal area networks, WiMedia multiband-orthogonal frequency division multiplexing (MB-OFDM) has been designed while consuming low-transmission power. In this article, we increase the wireless bandwidth of the standard MB-OFDM scheme three times using device synchronization, and cons...

In this paper, a meaningful star-ring based EPON architecture is proposed to reduce the local traffic transmitted from ONUs (Optical Network Units) to OLT (Optical Line Terminal) which can provide the bandwidth efficiency. One of ONUs is assigned as a Sub-OLT to control the partial traffic in the ring. In addition, the ONU structure is modified in all optical process to reduce the optical-elect...

Dynamic bandwidth allocation for upstream transmission in EPONs has gathered significant attention. Maximizing utilization is inversely related to dynamic bandwidth allocation. We propose an auctioning mechanism for bandwidth allocation with a view to dissolution of the paradox between efficiency (utilization) and dynamism. While conventional bandwidth auctioning schemes pose efficiency as well...

Future satellite communication systems proposed use geosynchronous (GEO) satellites, medium earth orbit (MEO), and low earth orbit (LEO) constellations with fast packet switching and quality of service (QoS) provisioning. In this paper, we present broadband GEO, MEO and LEO satellite network QoS models and simulated performance results. This paper proposes a new method of bandwidth allocation d...

In order to reasonable and effective distribute bandwidth to giving full play to the advantages of network resources and improve the efficiency of network data flow in heterogeneous network, this paper puts forward a heterogeneous network bandwidth allocation algorithm. The algorithm is adopted connection bandwidth constraint mechanism in the flow model, starting from the data transmission in t...

In this papel; we study the problem of dynamic bandwidth allocation for an ATM multiplexer loaded with real-time VBR video trafJic. The proposed mechanism adjusts the allocated bandwidth at regular intervals based on measured QoS. Instead of actual measurement of small cell loss ratios, we combine virtual output buffer method with a regression method to shorten the time interval required for es...

With the rapid development of Internet technology, there have been many new services which require high bandwidth. EPON (Ethernet Passive Optical Network) has become one of the best technologies in the next generation broadband access network because of their high-bandwidth and low-cost. Dynamic bandwidth allocation (DBA) is one of the most critical issues in EPON network. In this paper, a new ...

In this paper, we present a stochastic model with optimization and risk analyses in Communication Networks (CNs). The model is proposed for offline traffic engineering optimization with bandwidth allocation and performance analysis. First, we present an analysis of the bandwidth allocation problem to derive the optimal bandwidth capacity with a loss rate constraint. And, we also use a mean–vari...

This paper focuses on the bonding group online bandwidth allocation problem in DOCSIS3.0 network. Taking network maximization utility as the goal, an optimal model, which is the Bonding Group based rival service flow Set Utility Maximization (BG-SUM), is built firstly, and then a Bonding Group Online Bandwidth Allocation algorithm (BG-OBA) is proposed to perform fast nearoptimal solution. By di...