在802.11和802.16e共存的異質網路下的省電機制

Abstract

無線技術是目前網路的潮流。像是藍芽和Wi-Fi已經普及化了，而且幾乎已經成了現在行動裝置的基本配備了。除了藍芽和Wi-Fi之外，WiMax是另一項目前發展迅速的技術之一。不久之後，WiMax也將成為行動裝置的基本配備。 對於行動裝置來說，電源一直是很重要的一個問題。不過Wi-Fi和WiMax都有針對電源因素提出解決的省電機制。但是它Wi-Fi們的省電機制並沒有考慮到對方。對於同時擁有Wi-Fi和WiMax的行動裝置來說，要真正進入省電模式必須Wi-Fi和WiMax都進入省電模式才行。目前Wi-Fi和WiMax都沒有考慮如此。 本篇論文針對上述問題，修改原本的省電機制，使得既可以考慮到對方又可以保持省電機制的效果。透過模擬，我們可以看到這樣的方法的確有效。

Wireless technology is the current trend of Internet. Like Bluetooth and Wi-Fi, they have already been popular and are basic equipments in mobile devices. Except Bluetooth and Wi-Fi, WiMax is another technology that develops rapidly in current. In the feature, WiMax will be basic equipment in mobile device too. For mobile devices, power is always a important issue. Wi-Fi and WiMax have power saving mechanisms to solve the power issue. But their power saving mechanisms don’t consider each other. For mobile devices with Wi-Fi and WiMax, it will enter power saving mode if and only if Wi-Fi and WiMax both enter power saving mode. Currently, Wi-Fi and WiMax don’t consider this way. Focus on this problem, in this thesis we revise the original power saving mechanisms to consider other side and keep the effect of power saving mechanisms. From simulation, we can see this method works.