MAC Layer Channel Quality Measurement in 802.11
نویسندگان
چکیده
منابع مشابه
An 802.11 MAC layer covert channel
For extremely sensitive applications, it may be advantageous for users to transmit certain types of data covertly over the network. This provides an additional layer of security to that provided by the different layers of the protocol stack. In this paper we present a covert side channel that uses the 802.11 MAC rate switching protocol. The covert channel provides a general method to hide commu...
متن کاملLocal Estimators for 802.11 MAC Channel Quality
We extend two approaches for estimating the proportions of frame losses at an 802.11 station due to collisions and other errors, in order to distinguish errors due to channel noise and hidden nodes. Our methods use local 802.11 measurements available in basic access mode and are based on MAC and PHY level measurements. We implement the estimators on experimental testbeds using off-the-shelf har...
متن کاملImproving Quality of Service in the MAC 802.11 Layer
Quality of service in wireless networks cannot be achieved without the support for service differentiation at the medium access layer. IEEE802.11 layer suffers from QoS limitations that are summarized in [1] along with a survey of the current research work to enhance QoS. This paper presents simulation results to show the effectiveness of prevalent techniques of improving the QoS in IEEE802.11....
متن کاملMAC layer retransmissions in 1XTREME
In this paper, we study the joint reliability as offered by the medium access control (MAC) and the radio link protocol (RLP) in CDMA systems, particularly for 1XTREME. The retransmission mechanism in the RLP has considerable amount of delay associated with it which might not be able to sustain real-time communications with strict delay requirements. Retransmissions done at a lower layer, such ...
متن کاملMAC Sub-Layer Analysis with Channel Estimation in Broadband Power Line Communication
Broadband power line communication (BPLC) gained a lot of interest because of low cost and high performance communication network in access area. In this paper physical (PHY) layer and medium access control (MAC) sub-layer of BPLC are considered. Furthermore, effects of bit error rate (BER) are analyzed in MAC sub-layer. Powerful turbo convolutional code (TCC) and wideband orthogonal frequency ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Communications Letters
سال: 2007
ISSN: 1089-7798
DOI: 10.1109/lcomm.2007.061289