Arada IEEE White Paper - Multi Channel Sniffer
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Multi channel Wi-Fi sniffer is a system level solution that is scalable and modular, where the device can be used to sniff all the channels in 2.4GHz ISM (Industrial Scientific and Medical) radio band and multiple channels in 5GHz wireless spectrum simultaneously. The aim of the work is to provide intelligence support and detection of threats on open wireless networks. Since the device can sniff all the channels simultaneously, there is no chance of missing packets in a particular channel. Also in the suggested solution, there is no overhead of switching channels as in the case of existing single channel sniffer implementations.
Arada IEEE White Paper - Wireless Access In Vehicular Environment (WAVE)
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IEEE 802.11 enabled WiFi devices, present in the personal computing devices, communicate with each other after standard authentication, and association procedures. But, consider deploying these devices in a high speed moving automobile, wherein the communication environment rapidly changes, and the transactions have to be completed in a short time interval. IEEE 802.11p (Wireless Access in Vehicular Environments – WAVE) amendment attempts to solve this problem of deploying WiFi devices in vehicular environments. A block diagram of the WAVE device stack is as given in Figure 1. A WAVE device is based on an
architecture that supports a Control CHannel (CCH) and multiple Service CHannels (SCH). The CCH is used to transmit Wave Short Messages (WSMs) and announce WAVE services, and the SCH are used for application interactions and transmissions over IP. To make it cost
effective, WAVE devices use a single radio solution. Another challenge in implementing the WAVE stack warrants accurate channel switching between CCH and SCH.
We present here a solution aimed to solve the challenges in physical layer, and MAC layer by demonstrating a high bandwidth required application. It presents the importance of channel utilization efficiency, and synchronization between multiple wireless nodes.