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Next generation network(NGN) is an All-IP based heterogeneous network which includes wired network, satellite network, wireless mobile network and so on. Comparing with the traditional wired network, in NGN, the classical TCP/IP is beginning to show signs of age. In order to cope with problems such as the poor performance of wireless links and mobile terminals, including the high error rate of wireless...
Next Generation Network (NGN), featured by the merging of Wired network, Wireless network, Internet and Satellites network, is the development trend in future. Challenges brought by the existing protocol communication architecture which has the representative of TCP/IP stack are emerging in NGN. Among kinds of reply technologies, Cross-Layer Design is a new and effective one. However, the present...
This paper describes the protocol analysis technology and its working principle combined with the encapsulation characteristic of Ipv6 packet, gives the state protocol analysis model SPAFA based on automata theory, discusses the detection algorithm of the model, and proposes a intrusion framework combined with the protocol analysis technology and sate protocol analysis model. The research indicates...
Current information systems are independent, heterogeneous and enclosed. And the route line of the traditional integration model is fixed and cannot be changed dynamically. So the information systems are difficult to share information strategically with each other. In this paper, a heterogeneous system integration frame is proposed. It combines the advantages of SOA and ESB technologies and introduces...
Communication information of interactive computer is sealed in data package. With the capture and analysis of network packets, it takes on a major role to network test, intrusion detection, fault diagnosis and teaching of computer network experiment. Jpcap is a Java library for capturing and sending network packets. Using Jpcap, we developed an application to capture packets from a network interface...
In order to improve TCP performance in networks with large round trip time, a method using a PEP (performance enhancing proxy) is proposed. In the method, the PEP is located on a intermediate router along a TCP connection, and returns acknowledgment packets (premature ACKs) to the source host instead of the destination host. In previous researches, although a congestion control in the PEP which keeps...
To improve TCP throughput performance, a method using a PEP (Performance Enhancing Proxy) has been proposed. The PEP operates on a router along a TCP connection. When a data packet arrives at the PEP, it forwards the packet to the destination host, transmits the corresponding ACK (premature ACK) to the source host in behalf of the destination host, and stores a copy of the packet into its own buffer...
In order to improve TCP performance, a method using a PEP (performance enhancing proxy) is proposed. The PEP operates on a router along a TCP connection. When a data packet arrives at the PEP, it forwards the packet to the destination host, transmits the corresponding ACK (premature ACK) to the source host in behalf of the destination host and stores the copy of the packet into its own buffer (PEP...
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