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In this paper, we propose to tackle the design problem of two-level metropolitan Internet protocol (IP) networks with modular routers including the design of the points of presence. We first propose a model that deals with selecting the number of routers and their types to install in each point of presence, selecting the interface card types to install in each router, finding the access and the backbone...
In realistic mobile heterogeneous environment, the quality perceived by user is variable and dependant on following major factors: available bit rate variation, packet loss and latency. Even though QoS management is enabled in most modern telecommunication systems, it does not ensure the actual end-user perceived quality of service level. Therefore, to make sure that operator follows SLA provisions,...
In the paper we investigate the methods of constructing the routing tree in WiMAX networks with mesh topology. The concept of network efficiency optimization by building the routing tree characterized by selected topological properties that are independent on network load is presented. As an important partial result, correlations between topological parameters of the tree and network efficiency have...
In this article, a FPGA implementation of the Maximal Matching with Round-Robin Selection (MMRRS) scheduling algorithm for Virtual Output Queuing (VOQ) switches is presented. Implementation is done in the VERILOG hardware description language. The results results obtained from the software model simulation and hardware implementation in XILINX Virtex 5 proved that the implementation is correct. The...
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