A Simple Cooperative Transmission Protocol for Energy-Efficient Broadcasting Over Multi-Hop Wireless Networks
Aravind Kailas, Lakshmi Thanayankizil, Mary Ann Ingram

TL;DR
This paper introduces energy-efficient broadcasting protocols for multi-hop wireless sensor networks using cooperative diversity, achieving significant energy savings without GPS or node interaction through threshold-based node scheduling.
Contribution
It proposes OLA-T and OLA-VT protocols that optimize energy use by threshold-based relay decisions, integrating MAC and routing functions at the physical layer.
Findings
OLA-T and OLA-VT reduce energy consumption by up to 32%.
The protocols achieve efficient broadcasting with fewer hops and lower energy use.
Analytical results are validated with Monte Carlo simulations.
Abstract
This paper analyzes a broadcasting technique for wireless multi-hop sensor networks that uses a form of cooperative diversity called opportunistic large arrays (OLAs). We propose a method for autonomous scheduling of the nodes, which limits the nodes that relay and saves as much as 32% of the transmit energy compared to other broadcast approaches, without requiring Global Positioning System (GPS), individual node addressing, or inter-node interaction. This energy-saving is a result of cross-layer interaction, in the sense that the Medium Access Control (MAC) and routing functions are partially executed in the Physical (PHY) layer. Our proposed method is called OLA with a transmission threshold (OLA-T), where a node compares its received power to a threshold to decide if it should forward. We also investigate OLA with variable threshold (OLA-VT), which optimizes the thresholds as a…
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Taxonomy
TopicsMobile Ad Hoc Networks · Cooperative Communication and Network Coding · Advanced Wireless Network Optimization
