An approach to sensor network throughput enhancement by phy aided mac +91-9994232214,8144199666, ieeeprojectchennai@gmail.com, www.projectsieee.com, www.ieee-projects-chennai.com IEEE PROJECTS 2015-2016 ----------------------------------- Contact:+91-9994232214,+91-8144199666 Email:ieeeprojectchennai@gmail.com Support: ------------- Projects Code Documentation PPT Projects Video File Projects Explanation Teamviewer Support

1. An Approach to Sensor Network Throughput Enhancement by PHY-
Aided MAC
Abstract:
Low power sensor networks with communication enabled by WiFi are
expected to be widely deployed. A major challenge is collecting event-
driven uplink data from a large number of low-power sensors with low
latency. In WiFi, the access point (AP) typically polls nodes individually to
schedule uplink transmission times, resulting in a large latency. In this
paper, we present a physical (PHY)layer-aided medium access control
(MAC) framework to enhance the uplink throughput of sensor data traffic.
In the approach, the acknowledgements from the sensor nodes to the poll
message are parallelized. By detecting the parallel acknowledgement, the
AP knows which nodes have data to send and allocates channel resources
by sending a pull message. This approach is referred to as the probe and
pull MAC (PPMAC) mechanism. Our scheme is based on maximizing the
achievable throughput of PPMACby optimizing the PHY layer
components. More precisely, we investigate the parallel acknowledgement
detector design problem and develop a non-convex optimization
framework that maximizes the PPMACthroughput by optimizing the
parallel acknowledgement detection statistics. Numerical examples
illustrate that PPMACoutperforms the point coordination function (PCF)

2. and distributed coordination function (DCF) mechanisms, standardized in
IEEE 802.11,in terms of the achievable throughput and the overhead.