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Network-Centric Mechanisms for Performance Improvement in Dense Wireless Networks

Bansal, Tarun
http://rave.ohiolink.edu/etdc/view?acc_num=osu1397749798

Abstract Details

2014, Doctor of Philosophy, Ohio State University, Computer Science and Engineering.
In recent years, the number of wireless devices and the amount of data generated by these devices has seen an exponential growth. However, the number of channels available for data transmission has not increased significantly leading to the problem of spectrum crunch. Our measurements show that the existing wireless deployments employ high density of wireless devices (access points, smartphones etc.). However, to prevent interference, the current wireless algorithms prohibit these neighboring wireless devices to operate simultaneously. The main focus of this thesis is on improving the network experience on the mobile devices by leveraging the high density of wireless devices. This thesis proposes four different solutions that are suited for different wireless topologies: Symphony, RobinHood, Mozart and R2D2. Symphony and RobinHood are best suited for Enterprise wireless networks where multiple access points are connected to each other and are willing to cooperate. Both Symphony and RobinHood use novel cooperative decoding techniques to enable multiple neighboring access points to simultaneously receive different packets on the same channel. Symphony is suitable for wireless networks that span large geographical areas while RobinHood is suitable for smaller deployments. Symphony and RobinHood leverage the high density of access points in WiFi networks that otherwise remain unused in traditional wireless solutions. Mozart is suitable for WiFi networks where neighboring access points belong to different entities that may not be willing to cooperate. Mozart takes an unconventional approach of letting all transmitters collide at the access point and then lets the access point decode the collided packets in the fewest number of slots. Finally, R2D2 is designed for cellular networks and it enables neighboring devices to efficiently communicate with each other while reducing the dependence on the cellular base stations. R2D2 leverages the temporal spatial asymmetry in the traffic patterns to efficiently allocate resources across cellular base stations as well as to efficiently schedule links at each of the base stations. The thesis discusses all the solutions in detail, along with the techniques to address the challenges involved in their practical implementation.
Prasun Sinha (Advisor)
173 p.
Computer Science
Wireless Networks; Symphony; Mozart; RobinHood; Performance

Recommended Citations

Citations

  • Bansal, T. (2014). Network-Centric Mechanisms for Performance Improvement in Dense Wireless Networks [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397749798

    APA Style (7th edition)

  • Bansal, Tarun. Network-Centric Mechanisms for Performance Improvement in Dense Wireless Networks. 2014. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1397749798.

    MLA Style (8th edition)

  • Bansal, Tarun. "Network-Centric Mechanisms for Performance Improvement in Dense Wireless Networks." Doctoral dissertation, Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397749798

    Chicago Manual of Style (17th edition)

osu1397749798
134
© 2014, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.