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Jitter Performance Evaluation for Resilient Vehicular Systems

Pratiti Paul, Christo K. Thomas, Walid Saad, Eric W. Burger, Manav R. Bhatnagar

Abstract

In this paper, the challenge of resilient vehicular communications is investigated for a vehicle-to-vehicle (V2V) wireless link subject to timing jitter induced by the stochastic evolution of interference and inter-vehicular separation dynamics. To characterize the dynamic behavior of V2V systems under the influence of multiple stochastic deterioration processes, this work presents a novel mathematical framework for modeling and mitigating transmission delay jitter in V2V communication systems. A limit-state indicator is introduced to capture the progression of system performance, along with formal mathematical definitions of the system's jitter-withstanding capacity and the load-induced capacity degradation, defined in terms of the V2V system's ability to withstand jitter. These quantities provide the basis for tracking and assessing the system's resilience to timing jitter across all stages, including the alarming, failure, and restoration phases. To enhance resilience against jitter, adaptive power allocation and link diversity strategies (multiple-input-single-output) are investigated. These strategies bring the limit-state metric back within its safety bound, thereby resulting in an improved jitter-withstanding capacity. Numerical results validate the framework for quantifying jitter degradation and enabling resource-aware recovery. The results also establish that the investigated adaptive resource allocation scheme yields approximately 3-fold improvement in the average risk exposure rate relative to a constant resource allocation scheme baseline.

Jitter Performance Evaluation for Resilient Vehicular Systems

Abstract

In this paper, the challenge of resilient vehicular communications is investigated for a vehicle-to-vehicle (V2V) wireless link subject to timing jitter induced by the stochastic evolution of interference and inter-vehicular separation dynamics. To characterize the dynamic behavior of V2V systems under the influence of multiple stochastic deterioration processes, this work presents a novel mathematical framework for modeling and mitigating transmission delay jitter in V2V communication systems. A limit-state indicator is introduced to capture the progression of system performance, along with formal mathematical definitions of the system's jitter-withstanding capacity and the load-induced capacity degradation, defined in terms of the V2V system's ability to withstand jitter. These quantities provide the basis for tracking and assessing the system's resilience to timing jitter across all stages, including the alarming, failure, and restoration phases. To enhance resilience against jitter, adaptive power allocation and link diversity strategies (multiple-input-single-output) are investigated. These strategies bring the limit-state metric back within its safety bound, thereby resulting in an improved jitter-withstanding capacity. Numerical results validate the framework for quantifying jitter degradation and enabling resource-aware recovery. The results also establish that the investigated adaptive resource allocation scheme yields approximately 3-fold improvement in the average risk exposure rate relative to a constant resource allocation scheme baseline.
Paper Structure (19 sections, 4 equations, 6 figures, 1 table, 1 algorithm)

This paper contains 19 sections, 4 equations, 6 figures, 1 table, 1 algorithm.

Table of Contents

  1. Introduction
  2. Motivation
  3. Related work
  4. Contribution
  5. System Model
  6. Deterioration Growth Modeling
  7. Interference growth modeling
  8. Inter-vehicular distance growth modeling
  9. Jitter State Evolution with Deterioration
  10. V2V Transmission Delay Jitter Analysis
  11. Risk-based Jitter Performance Analysis
  12. Resource Allocation During Post-failure
  13. Adaptive power allocation and diversity schemes
  14. Algorithm complexity
  15. Simulation Results and Analysis
  16. ...and 4 more sections

Figures (6)

  • Figure 1: V2V system affected by transmission delay jitter from random interference and varying inter-vehicular distances.
  • Figure 2: Impact of multiple stochastic deterioration processes on system performance.
  • Figure 9: $\mathcal{E}_r(t)$ with constant power and adaptive power allocation.
  • Figure : Proposed algorithm
  • Figure :
  • ...and 1 more figures