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In this paper factors affecting accuracy of time synchronization in EPON are analysed and the scheme of time synchronization in EPON based on IEEE1588v2 protocol is designed and implemented by FPGA. Experimental result shows that the scheme is feasible and good time synchronization accuracy about 20 nanoseconds can be reached.
Addressing topology mismatch and network instability problems existing in Application Layer Multicast (ALM), a novel ALM scheme based on redirection is proposed. Simulation results show that the scheme would decrease the traffic of core network and end-to-end delay of service effectively.
The convergence of EPON and WiMAX is one promising solution for Fiber Wireless access network, QoS is an important technical issue for hybrid access network. We propose a novel QoS scheme of EPON and WiMAX integrated network based on unified QoS management which has been implemented and proved its effectiveness.
Toward the P2P topology mismatch problem, we proposed a novel P2P service re-directing scheme and it is fully described in reference. Furthermore, we have successfully implemented this mechanism in EPON system. Experimental results show that our scheme can effectively reduce core network traffic, and evidently improve clients' downloading rate.
P2P protocol is widely used in many network applications. Recently, p2p traffic reserves a big part of total access bandwidth and may cause serious problems in EPON. In this paper, a new method to identify the p2p traffic based on the flow ID (five-tuple) is presented. We analyze the factors that influence identification accuracy, and then simulate accurate rate of the new method according to the...
This article proposes and implements a survivable Ethernet passive optical network (EPON) system supporting direct communication between optical network units (ONU) without optical line terminal's (OLT) forwarding. An original centralized automatic protection switching (APS) control mechanism is proposed and implemented by FPGA. The actual test results show that our system's protection switching time...
EPON and WiMAX Convergence Network integrates the “master-slave and peer-to-peer combined” EPON network structure that supports protection switching with the WiMAX technology. Directing at the complicated architecture and various types of topology of the convergence network, this article proposes an automatic discovery method and a layout algorithm for network topology to facilitate the network management...
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