Improving throughput by tuning carrier sensing in 802.11 wireless networks

نویسندگان

  • Qiang Shen
  • Xuming Fang
  • Rongsheng Huang
  • Pan Li
  • Yuguang Fang
چکیده

0140-3664/$ see front matter 2009 Elsevier B.V. A doi:10.1016/j.comcom.2009.02.003 * Corresponding author. Tel.: +86 28 876

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Analysis and Simulation Model of Physical Carrier Sensing in IEEE 802.11 Mesh Networks

In IEEE 802.11 Wireless Mesh networks, tuning of the Physical Carrier Sensing (PCS) threshold based has been shown to be an efficient way to balance the hidden vs. exposed terminal trade-off and hence improve aggregate network throughput. Clear Channel Assessment (CCA) indicates channel status by comparing the net RF energy with a suitable chosen PCS threshold to control which nodes may attempt...

متن کامل

Optimizing 802.11 Wireless Mesh Network Performance Using Physical Carrier Sensing

Multi-hop ad-hoc networks suffer from the presence of hidden and exposed nodes that diminish aggregate network throughput. While there are various approaches to mitigating these problems, in this work we focus exclusively on the role of physical carrier sensing (PCS). Specifically, tuning the PCS threshold leads to a trade-off between the ‘exposed’ and ‘hidden’ areas. The contributions of this ...

متن کامل

Numerical Analysis of IEEE 802.11 Broadcast Scheme in Multihop Wireless Ad Hoc Networks

In this paper, we study the performance of IEEE 802.11 broadcast scheme in multihop wireless networks using an analytical model. Previous works have evaluated the performance of IEEE 802.11 protocol assuming unicast communication, but there has not been an analysis considering broadcast communication. Analyzing performance of broadcast communication is important because multicast communication ...

متن کامل

Improving spatial reuse of IEEE 802.11 based ad hoc networks

In this paper, we evaluate and suggest methods to improve the performance of IEEE 802.11 based ad hoc networks from the perspective of spatial reuse. Since 802.11 employs virtual carrier sensing to reserve the medium prior to a packet transmission, the relative size of the spatial region it reserves for the impending traffic significantly affects the overall network performance. We show that th...

متن کامل

A Hidden Node Aware Network Allocation Vector Management System for Multi-hop Wireless Ad hoc Networks

Many performance evaluations for IEEE 802.11distributed coordination function (DCF) have been previouslyreported in the literature. Some of them have clearly indicatedthat 802.11 MAC protocol has poor performance in multi-hopwireless ad hoc networks due to exposed and hidden nodeproblems. Although RTS/CTS transmission scheme mitigatesthese phenomena, it has not been successful in thoroughlyomit...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Computer Communications

دوره 32  شماره 

صفحات  -

تاریخ انتشار 2009