This thesis presents several techniques that enhance the performance of wireless mobile
devices that communicate without depending on a supporting infrastructure. These networks …

在無線的環境中, IEEE 組織已經為無線區域網路訂下了標準, 也就是IEEE802. 11. 在IEEE802.
11 中, 不管是資料封包或是控制封包皆是採用最大固定的能量(power) 來傳送 …

In vehicular safety service, every vehicle broadcasts Basic Safety Message (BSM)
periodically to inform neighbor vehicles of host vehicle information. However, this can cause …

IEEE 802.15. 4 is a new standard uniquely designed for low‐rate wireless sensor networks
(WSNs). It targets low data rate, low power consumption and low‐cost wireless networking …

(in English) In recent years, demand of the Internet of Things (IoT), which connects to the
Internet all kinds of things such as appliances with sensors and meters by wireless …

Vehicular safety service reduces traffic accidents and traffic congestion by informing drivers
in advance of threats that may occur while driving using vehicle-to-vehicle (V2V) …

Since most of devices in the IEEE 802.15. 4 LR-WPAN are expected to operate on batteries,
they must be designed to consume energy in a very conservative way. Two energy …

In recent years, WMNs (Wireless Mesh Networks) technologies have received significant
attentions. WMNs not only accede to the advantages of ad hoc networks but also provide …