Tuesday, November 17, 2015

Reliable Multicast for Enterprise WLANs

In this work, we have presented a complete end-end architecture to employ the rate-less codes. We have developed a new architecture Rate-less Codes Multicast (RCNC). This architecture is shown to provide high throughput gains, reliability and near optimal throughput performance.

Sunday, November 15, 2015

Idea: Smartphone dongle for police radar detection

Police radar detectors are still expensive - ranging up to $650 for good ones.  I was contemplating why good products in this area are not available for a lower price?

Possible Challenges:
1. Complex software running the blip detection (software DFS like?)

Friday, November 13, 2015

Uplink Airtime Fairness Control

Problem statement:
There is currently no direct way to control uplink airtime usage of wireless clients on a WLAN without actually implementing something on the client. This is not always possible because of multiple reasons:
Diversity in the operating systems and hardware of client devices.
Privacy issues
General aversion to install 3rd party control software.

Abstract of the idea:
In this case, we address the issue of limiting the airtime used the clients in the uplink direction by controlling the TCP window size in the uplink direction. We do this by doing a deep packet inspection of open TCP sessions for every client and then appropriately limiting the advertised TCP window based on bandwidth consumption by the clients.
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Tutorial: 4 simple steps to create a quick heatmap in excel

  • Setup the data in your excel file:

  • Select your table and follow the next step

Tuesday, November 10, 2015

Hybrid Wireless Virtualization Architecture

This project presents the design of the hybrid wireless virtualization (HWV) controller based network architecture. Using a HWV controller, an unified approach can be taken for provisioning and management of virtualized heterogeneous radios, irrespective of their MAC and PHY mechanisms. It is shown that the airtime occupancy by transmissions from different slices or groups can be used as a single metric for tying these virtualized platforms.

Saturday, November 7, 2015

Multiuser support in WLANs versus Cellular networks

About a year back I was reading about the physical layer design of 802.11ac networks, and I started wondering about what would be the similarities or differences between cutting edge cellular networks and WiFi networks. The reason I started thinking about this is because cellular networks seem to be gradually moving towards smaller cells (nano-cell, pico-cell designs), which are similar in RF footprint to regular WLANs.