On Channel Access Design for Wireless Networks with Multi-Packet Reception

  • Author / Creator
    Li, Ke
  • As wireless devices have emerged as a ubiquitous part of people's everyday lives, the demands for faster wireless communications become even more pressing. Fortunately, the advanced techniques of the physical layer such as multiple-input and multiple-output (MIMO), multi-user detection (MUD), advanced modulation, etc., make multi-packet transmission (MPT) and multi-packet reception (MPR) possible. It has been well recognized that the MPT/MPR technique can improve the performance of the wireless networks. However, novel algorithms at the medium-access control (MAC) and higher layers are needed to fully exploit the MPT/MPR capability. In this thesis, we study the behavior the MPT/MPR wireless network, evaluate its potential performance and design algorithms to efficiently and fairly manage the MPT/MPR networks. We start from a single-hop scenario where uncoordinated nodes share a MPR channel and assess its performance by designing additive-increase multiplicative-decrease MAC (AIMD-MAC) to achieve the max-min fairness. We show that with an appropriate set of parameters, AIMD-MAC can be applied to distributed environments where the number of nodes and channel capacity are not constant to achieve at least 90% of the performance of the benchmark. For multi-hop scenarios, we observe the M property of MPT/MPR networks, which profoundly changes the traditional understanding of managing a multi-hop wireless network. By identifying and investigating the M property, we propose novel algorithms to evaluate the MPT/MPR networks and demonstrate the relative importance of the MPT and MPR capacity limits. To efficiently manage the multi-hop flows traversing a MPT/MPR network, we design the AIMD backpressure MAC (AB-MAC) algorithm. Extensive simulations show that AB-MAC significantly outperforms IEEE 802.11 especially in dense networks.

  • Subjects / Keywords
  • Graduation date
  • Type of Item
  • Degree
    Doctor of Philosophy
  • DOI
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
  • Institution
    University of Alberta
  • Degree level
  • Department
    • Department of Computing Science
  • Supervisor / co-supervisor and their department(s)
    • Nikolaidis, Ioanis (Computing Science)
    • Harms, Janelle (Computing Science)
  • Examining committee members and their departments
    • Zhao, Vicky Hong (Electrical and Computer Engineering)
    • Hossain, Ekram (Electrical and Computer Engineering, University of Manitoba)
    • Jagersand, Martin (Computing Science)
    • Schlegel, Christian (Electrical and Computer Engineering, Dalhousie University)