Abstract

It is well known that the transport layer protocol TCP has low throughput and is unfair in wireless mesh networks. Transport layer solutions for mesh networks have been primarily validated using simulations with simplified assumptions about the wireless network. The WiFu Transport framework complements simulator results by allowing developers to easily create and experiment with transport layer protocols on live networks. We provide a user-space solution that is flexible and promotes code reuse while maintaining high performance and scalability. To validate WiFu Transport we use it to build WiFu TCP, a decomposed Tahoe solution that preserves TCP semantics. Furthermore, we share other WiFu developers' experiences building several TCP variants as well as a hybrid protocol to demonstrate flexibility and code reuse. We demonstrate that WiFu Transport performs as well as the Linux kernel on 10 and 100 Mbps Ethernet connections and over a one-hop wireless connection. We also show that our WiFu TCP implementation is fair and that the framework also scales to support multiple threads.

Degree

MS

College and Department

Physical and Mathematical Sciences; Computer Science

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

2012-04-06

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etd5155

Keywords

networking, wireless mesh, transport layer, protocol, framework, flexibility, code reuse, scalability, user-space networking, protocol decomposition

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