Instant Messaging Power Saving Mechanism in WiFi and 3G Environment
Date Issued
2011
Date
2011
Author(s)
Chen, Yi-Hung
Abstract
Nowadays, mobile devices have been accepted and used widely. Thus, the power consumption of mobile devices is becoming a popular research issue. Instant messaging service is one of the popular mobile Internet applications. The period of instant messaging users stay in the instant messaging service is relatively long and there are often frequent packet transmissions in the instant messaging service. Therefore, the power consumption of mobile devices can be increased when logging into the instant messaging service. This thesis thus focuses on the instant messaging application and proposes an effective power saving mechanism.
Most mobile devices connect to Internet via WiFi or 3G method. In this thesis, we analyze the power consumption behavior of packet transmissions in the WiFi and 3G environment, and then we propose a Dynamic Firewall mechanism, as a power saving mechanism. The Dynamic Firewall mechanism sets the firewall on and off dynamically for merging the non-real-time packets and transmitting these packets together. Thus, the amount of packet transmissions and length of total packet transmission period are decreased and then power saving is achieve. The proposed mechanism can operate over a WiFi AP/femto AP, and power saving can be achieved when users connect to Internet through such a power saving gateway without additional modification and hardware component replacement. Moreover, an instant messaging server auto-detection algorithm is presented in the thesis. The power saving gateway can identify the instant messaging server when users connect to the instant messaging service and execute the Dynamic Firewall mechanism with respect to these servers.
Based on the results of simulations and actual measurements, the proposed Dynamic Firewall mechanism can achieve power saving in both WiFi and 3G environment, and effectively extend the battery life of mobile devices.
Subjects
Instant Messaging
Firewall
Power Consumption
Power Saving
Mobile Device
Type
thesis
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