An embedded gateway based on real-time database

Authors:
Zhiping Jia;Xinxiao Qiao
Affiliations:
School of Computer Science and Technology, Shandong University, Jinan, P.R. China;Department Of Computer Science and Technology, Shandong Institute Light Industry, Jinan, P.R. China
Venue:
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
Year:
2005

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Abstract

Because of the limitation of the traditional gateway in the distributed monitoring system, the access of the protocol translation gateway will increase drastically with the massive usage of Ethernet. By using M/M/1 queuing theories, we present a framework of gateway based on the real-time database. The whole gateway is divided into two parts. One is linked to the monitoring subnet to collect the data with a polling method and deposit them in real-time database of the gateway. The other part is used for accepting the TCP connecting request, accessing the real-time database of the gateway. By analysis of the M/G/1 theory, it can be concluded that this framework can not only update the data more quickly in the distributed observing and controlling subnet, but also reduce the rejection of connections and loss of packet caused by the full queue buffer effectively when the number of TCP links become larger.