Mobility in modern distributed systems is a vital feature though it brings up such problems as unforeseeable disconnections while crossing the boundaries of wireless cells or networks. Due to the limited coverage and the lack of co-operation between different networks, seamless switching between different networks becomes extremely difficult. This paper addresses the problem of accidental or in...

Traditional networked file systems like NFS do not extend to wide-area due to network latency and dynamics introduced in the WAN environment. In this paper we proposed the design of a wide-area networked system called WireFS. WireFS is based on NFS and extends to the WAN environment by introducing a file redirector infrastructure residing between the central file server and clients. The file re...

Due to advances in network technologies, providing streaming services over the Internet has gained in popularity. Because P video stream is in compressed format, it is naturally with the variable bit rate (VBR) property and its traffic is highly burst. With the installation of a video proxy between access networks (e.g. local area networks, LAN) and backbone networks (e.g. wide area networks, W...

Functional standardization activities in ISO and in regional workshops are currently addressing network layer relays for the interconnection of several types of subnetworks. Relay systems are critical systems in the overall performance of the network because they are the points where network congestion can be build up or avoided. Particularly, when the interconnected subnetworks have very dissi...

The performance of network protocols on different usage scenarios differs significantly, making the protocol choice a difficult question. This had motivated a work that aims to evaluate the TCP, UDP and Sendfile (a POSIXdefined zero-copy TCP access technique) protocols on LAN, MAN and WAN environments, in order to find the most adequate configuration for each protocol. The protocols were evalua...

This paper addresses the problem of congestion control and fairness in relay systems for Connection Mode LAN/WAN interworking. To ensure congestion collapse avoidance and fairness against QoS parameters, a channel service algorithm and an acknowledgment algorithm are proposed and evaluated by simulations. Results show that, in a situation of overload and for different traffic patterns with diff...

A predominant (‘base’) scheme currently used in many circuit-switched LAN–WAN gateway applications is based on device-driver LAN redirections. Various functional and performance deficiencies associated with the LAN redirection (base) scheme and an RPC programming interface are described. This RPC definition supports the base scheme, as well as another (‘enhanced’) scheme. The enhanced scheme ov...

Lan-Qing Yao, Chao Li, Yong-Kang Diao, Lei Liang, Hang-Dong Jia, Shi-Chuan Tang, Yong-Yi Zeng, Han Wu, Ming-Da Wang, Li-Hui Gu, Timothy M. Pawlik, Wan Yee Lau, Cheng-Wu Zhang, Feng Shen, Kui Tian Yang

Lan-Qing YAO, Hai-Bo QIU, Jia-Le PU, Yong-Kang DIAO, Chao LI, Timothy M. PAWLIK, Wan Yee LAU, Dong-Sheng HUANG, Feng SHEN, Tian YANG*. Ann Hepatobiliary Pancreat Surg 2022;26:S302. https://doi.org/10.14701/ahbps.2022S1.EP-20