Skip to main content
eScholarship
Open Access Publications from the University of California

UC Santa Cruz

UC Santa Cruz Electronic Theses and Dissertations bannerUC Santa Cruz

An Analysis of Contention Resolution Techniques in QSMA

Creative Commons 'BY' version 4.0 license
Abstract

This thesis introduces QSMA-CR, a MAC layer protocol that leverages carrier sensing to achieve lower latency than its predecessors: QSMA and ALOHA-QS. QSMA-CR establishes a distributed queue to maintain fairness and achieve high throughput. Each node sends data frames within their reserved slot every queue cycle. After every cycle is a joining period in which unjoined nodes attempt to make a reservation. In QSMA and ALOHA-QS, nodes have latency due to a lack of a contention resolution algorithm that optimizes the join process. QSMA-CR has a global and node-level state, enabling smarter contention resolution that allows high throughput and lower latency. We used a 10-minute experiment with 50 nodes to show that QSMA-CR can achieve lower latency than QSMA achieving similar throughput.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View