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This is a wiki for Assignment #1 in CS821

Weekly Progress

Week 1

• Started reading the LLRA research paper from http://ieeexplore.ieee.org/document/7218505/
• Understood the LLRA algorithm.
• Prepared a summary of the paper and sent for review to the instructor https://docs.google.com/document/d/1eGxC8RJB2UxP8u0RqoxU9YPsWj5iDWkiMWcA0TKEB6I/edit

Week 2

• Started learning about the 802.11n Wi-Fi features like MIMO modes and frame aggregation.
• Read the documentation of the ns-3 Wi-Fi module from https://www.nsnam.org/bugzilla/attachment.cgi?id=2230.
• Prepared a summary of 802.11n MIMO and Spacial Streams and sent to the instructor https://docs.google.com/document/d/1y8XZx068-Qcbk-KM4w3Z3cynjbQg0ohEhCYklwIIKe0/edit

Week 3

• Started reading the code of popular rate adaptation algorithms implemented in ns-3 like aarf, onoe and ideal.
• Created a clone of ns-3-dev from http://code.nsnam.org/ns-3-dev.
• Did an initial commit of the cloned repository and pushed the changes to Git Hub.
• Added the course Instructor and other team members as a collaborator in Git Hub.

Week 4

• Created the llra_wifi_manager.cc and llra_wifi_manager.h files and started writing the code.
• Learnt about the implementation of 802.11n MIMO modes in ns-3.
• Added code which initializes the MIMO modes with the correct spatial streams.
• Prepared the pseudocode for the probing algorithm and sent to the instructor for review. https://docs.google.com/document/d/13Bu-NvvldxUA82RVG91JgXEffW5TZ6Yxd5B026GGBgA/edit

Week 5

• Started implementing the probing algorithm.
• While implementing the probing algorithm certain parameters were required to calculate latency, a list of parameters which were difficult to estimate was prepared. https://docs.google.com/document/d/1SynpS1oyIfYwGR7A02CT53XYVz-UnxsPJ0initpWu2c/edit
• Implemented the probing algorithm by treating latency as a placeholder.

Week 6

• Prepared a summary of status update on LLRA project which is to be conveyed to Sumit Sir. https://docs.google.com/document/d/1CcmV6O_asVTM4NJWFxRk8quJxIBEP0LyrAdPQi5Siuc/edit?usp=sharing
• Prepared a draft of questions which is to posted on ns-3 users group and sent for review to the instructor
• Posted the reviewed questions on the ns-3 users group.

Summary

Learned more about rate adaptation algorithms and how it is implemented in ns-3, 802.11n MIMO and Implemented llra rate adaptation algorithm partially in ns-3. This is still a work in progress.

List of files added:

• ns-3-dev/src/wifi/model/llra_wifi_manager.cc
• ns-3-dev/src/wifi/model/llra_wifi_manager.h