On Spatial Capacity of Wireless Ad Hoc Networks with Threshold Based Scheduling
Yue Ling Che, Rui Zhang, Yi Gong, and Lingjie Duan

TL;DR
This paper introduces a novel SIR threshold-based scheduling scheme for wireless ad hoc networks, improving spatial capacity by adaptively probing and scheduling transmitters, with analytical characterization and multi-stage extension.
Contribution
It proposes a new SIR threshold-based scheduling method, providing analytical expressions for spatial capacity and extending to multi-stage probing with capacity optimization.
Findings
The scheme outperforms non-scheduling in spatial capacity when thresholds are properly set.
Closed-form expressions for spatial capacity are derived using a new approximation approach.
Multi-stage probing enhances capacity with optimized thresholds, balancing overhead and performance.
Abstract
This paper studies spatial capacity in a stochastic wireless ad hoc network, where multi-stage probing and data transmission are sequentially performed. We propose a novel signal-to-interference-ratio (SIR) threshold based scheduling scheme, where by starting with the first probing, each transmitter iteratively decides to further probe or stay idle, depending on whether the estimated SIR in the proceeding probing is larger or smaller than a predefined threshold. Although one can assume that the transmitters are initially deployed according to a homogeneous Poisson point process (PPP), the SIR based scheduling makes the PPP no longer applicable to model the locations of retained transmitters in the subsequent probing and data transmission phases, due to the interference induced coupling in their decisions. We first focus on single-stage probing and find that when the SIR threshold is set…
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Taxonomy
TopicsAdvanced MIMO Systems Optimization · Advanced Wireless Network Optimization · Wireless Communication Networks Research
