Throughput and Optimal ATIM Window of IEEE 802.11 Distributed Coordination Function in Power Saving Mode

One of the major global issues today is energy consumption. Consequently, power management was introduced in various communication technologies. For IEEE 802.11wireless communication, there is a Power Saving Mode scheme (PSM) for increase the battery life of cell phone. In this PSM, there are two key parameters: beacon period interval (BI) and listen interval(LI). In most work these values are chosen arbitrary. Here, a scheme to determine the optimal BI and LI for accomplishing the most astounding conceivable vitality proficiency is introduced. This is implemented with the application of a numerical sample to the standard IEEE 802.11 PSM and Access Point-PSM (AP-PSM) schemes. To ensure the quality of network performance analysis on the normal and change of parcel delays is doing. The well-known queuing (M/G/I) model with bulk services are utilized. After the implementation of the proposed analysis, “maximum rest plan time ratio optimal Sleep Scheme (OSS)” which is when participate stations stay in the doze mode it can be determined. In this research shows that the optimal BI and LI produce optimal OSS time ratio scheme also achieved optimal average and variance of packet delay.

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MTIM for IEEE 802.11 DCF power saving mode

2007 International Conference on Communications, Circuits and Systems ◽

10.1109/icccas.2007.6251596 ◽

2007 ◽

Author(s):

Pengbo Si ◽

Hong Ji ◽

Guangxin Yue ◽

Jingya Zhang

Keyword(s):

Ieee 802.11 ◽

Power Saving ◽

Ieee 802.11 Dcf ◽

802.11 Dcf ◽

Power Saving Mode ◽

Saving Mode

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Improving WLAN Performance by Modifying an IEEE 802.11 Protocol

Security, Design, and Architecture for Broadband and Wireless Network Technologies ◽

10.4018/978-1-4666-3902-7.ch002 ◽

2013 ◽

pp. 15-32

Author(s):

Nurul I. Sarkar

Keyword(s):

Ieee 802.11 ◽

Ad Hoc ◽

Packet Delay ◽

Distributed Coordination ◽

Bandwidth Utilization ◽

Medium Access ◽

802.11 Dcf ◽

802.11 Networks ◽

Distributed Coordination Function ◽

Coordination Function

One of the limitations of the IEEE 802.11 distributed coordination function (DCF) protocol is its low bandwidth utilization under medium-to-high traffic loads resulting in low throughput and high packet delay. To overcome performance problems, traditional IEEE 802.11 DCF (“DCF”) protocol is modified to the buffer unit multiple access (BUMA) protocol. The BUMA protocol achieves a better system performance by introducing a temporary buffer unit at the medium access control (MAC) layer to accumulate multiple packets and combine them into a single packet (with a header and a trailer) before transmission. This paper provides an in-depth performance evaluation (by simulation) of BUMA for multiuser ad hoc and infrastructure networks. Results obtained show that the BUMA is more efficient than that of DCF. The BUMA protocol is simple and its algorithm (software) can be upgraded to 802.11 networks requiring no hardware changes. The BUMA protocol is described and simulation results are presented to verify the performance.

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Distributed Approach for QoS Guarantee to Wireless Multimedia

Encyclopedia of Mobile Computing and Commerce ◽

10.4018/978-1-59904-002-8.ch034 ◽

2007 ◽

pp. 195-201

Author(s):

K. Chetan ◽

P. Venkataram ◽

R. Sircar

Keyword(s):

Ieee 802.11 ◽

Wireless Multimedia ◽

Distributed Coordination ◽

Access Method ◽

Qos Guarantee ◽

Distributed Approach ◽

Research Areas ◽

Distributed Coordination Function ◽

Active Research ◽

Coordination Function

Providing support for QoS at the MAC layer in the IEEE 802.11 is one of the very active research areas. There are various methods that are being worked out to achieve QoS at MAC level. In this article we describe a proposed enhancement to the DCF (distributed coordination function) access method to provide QoS guarantee for wireless multimedia applications.

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