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This paper presents the cross layer network design of traffic management in terms of throughput, spectrum efficiency, congestion control, latency and prioritized Quality of Service (QoS) for broadband satellite network. Design aspects include queueing structure and algorithms for link layer multiplexing and queue servicing, flow control between Layer 2 and Layer 3, scheduling and QoS provisioning...
Long Reach Passive Optical Networks (LR-PON) concept is offered as a cost-efficient solution to bring the fiber to the Home, Office, Curb, Building etc. (FTTX). It extends the reach and capacity of traditional PON from ∼20 km to ∼100 km using the optical amplifiers. It merges the metro and access domains by reducing the number of central offices (CO). This approach reduces capital and operational...
Active Queue Management (AQM) algorithm is important to manage buffers and transfer packets for wired/wireless networks. However, the unresponsive flows to the network congestion control is dangerous to the network equilibrium and Quality of Service (QoS), especially from the point of network resource allocation. In some certain scenarios, the limited network resource (buffers) can be occupied by...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
Random Early Detection (RED) can effectively avoid transmitting congestion at routers, but RED can not provide bandwidth fairness. Different packet sizes are one of the reasons that damage fairness. RED routers provide little protection from some bulky data flows that use considerably more bandwidth than other flows in time of congestion. Modifying the formulas of calculating final packet-discard...
Ethernet Passive Optical Networks (EPON) is a prominent solution for broadband access networks. However, little work has been done on emergency handling in EPON. In this paper, to manage emergency cases causing severe network traffic, the network state is divided into two states, i.e., the normal and the emergency states. The authors apply new priority- based Dynamic Bandwidth Allocation (DBA) algorithms...
In this paper, we introduce a pricing model that ensures efficient resource allocation that provides guaranteed quality of service while maximizing profit in multiservice networks. Specifically, a dynamic allocation policy is examined that relies on online measurements while each service class operates under a probabilistic bound delay constraint. We present a rigorous analysis of the properties of...
As Grid networks grows, the complexity of resource management in Grid networks dramatically increases. To manage the Grid resources efficiently, policy based resource management system is suitable. However, the policy which made at a moment could not be appropriate to other time because the condition of the grid resources with time space changes. Thus, in this paper, we propose asynchronous policy-based...
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