1. Field of the Invention
The present invention relates to communication system, and more specifically to a communication system and an Internet of Things (IoT) system capable of reducing power consumption.
2. Description of the Prior Art
Wireless networks are widely deployed to provide various communication services such as video, voice, broadcast, messaging, etc. These wireless networks may be capable of supporting communication for multiple users by sharing the available network resources. Examples of such networks include wireless local area networks (WLANs), wireless metropolitan area networks (WMANs), wireless wide area networks (WWANs), and wireless personal area networks (WPANs).
A wireless network may include any number of access points (APs) and any number of stations. An access point may act as a coordinator for communication with the stations. A station may actively communicate with an access point, may be idle, or may be powered down at any given moment depending on the data requirements of the station.
Because most of current handheld stations, such as wireless handheld device, are powered by batteries, power saving has always been the primary issue concerned. There is therefore a need in the art for techniques to reduce the power consumption of a station in a wireless network.