Wireless LAN technology has become the actual standard for wireless Internet
access, with increasing availability of access points for those wireless networks as a result
of what they offer of high data rates, low roaming costs, and good in-buildin
g coverage.
This led to a strong trend to the inclusion of Wi-Fi embedded sub-system in all kinds of
devices included computing side, and embedded side.The smartphones with the adoption
of Wi-Fi technology had to meet two requirements:
1- quality of service support for prioritizing real-time applications.
2- inclusion of power saving functionality to achieve an operating time meets the
expectations of users.
This paper presents a new power management technique P-PSM, it is a
combination of medium access mechanism depends on Contention Window to provide the
quality of service, with standard power management technology stdPSM. In addition to
evaluate its performance against a set of power management techniques under changing the
number of network nodes in order to clarify the expected quantity differences in terms of
both quality of service and power saving.