Backpressure networks with cooperative link augmentation
Lee, Ulysses
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https://hdl.handle.net/2142/95515
Description
Title
Backpressure networks with cooperative link augmentation
Author(s)
Lee, Ulysses
Issue Date
2016-12-07
Director of Research (if dissertation) or Advisor (if thesis)
Singer, Andrew Carl
Department of Study
Electrical And Computer Engineering
Discipline
Electrical And Computer Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Cooperative Diversity
Backpressure Routing
Network Queueing theory
Abstract
We investigate a cross-layer communication technique which jointly lever-
ages diversity gain from cooperative communications relaying and optimal
throughput characteristics of backpressure networking. In particular, we
address the capacity limitations of backpressure networks within fading en-
vironments by the retasking of a cooperating node as a relay with potentially
heterogeneous transmission architecture. Retasking a node as a cooperative
relay can temporally allocate resources of one particular session within the
backpressure network onto another session, thereby allowing for a more flex-
ible physical (PHY) layer for traffic load balancing. With this, we derive a
scheduling method that ensures timely delivery of information in networks
without predetermined infrastructure.
Within this thesis, we propose the architecture of an amplify-and-forward
relay for cooperative communications and derive the performance of multi-
ple cooperative nodes utilizing this architecture. We also propose a suitable
medium access control (MAC) layer facilitating the scheduling and decision
making of nearby relay node candidates. The proposed architecture may be of potential interest for emerging device-to-device (D2D) and swarming mesh
networks.
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