即興式無線區域網路媒體接取控制協定之頻寬效率與能源效率之提昇

Abstract

Abstract - Limited battery power is one of key constraints for continuous operation of mobile computers. The power consumption during data transmitting and receiving significantly depends on the MAC protocol of wireless networks. This paper presents a power saving distributed cycle stealing (PSDCS) mechanism, which is used to enhance the IEEE 802.11 DCF MAC. The PS-DCS not only improves the wireless channel throughput of the IEEE 802.11 DCF. In addition, the PS-DCS saves a great amount of energy consumed by the operation of a standard 802.11 DCF. We illustrate the PSDCS advantages via extensive simulation performed over wireless LAN. The results of simulation show that significant improvement on the throughput of wireless channel is obtained. Besides, the packet loss ratio and the packet mean delay time are also significantly reduced. Furthermore, the PSDCS saves more than 70% power consumption of the IEEE 802.11 DCF operation.