Extend covert cross-layer optimization to multi-antenna transmissions, Willie cooperation, and higher mobility speeds

Develop distributed cross-layer optimization and convergence methods for covert multi-hop, multi-modal wireless networks that incorporate multi-antenna transmissions, cooperation among adversarial Willies, and higher Willie mobility speeds.

Background

The paper develops a distributed Parallel Proximal ADMM algorithm for joint congestion control, routing, scheduling, and power control in covert multi-hop, multi-modal wireless networks. Its numerical tracking experiments consider Willie mobility and channel fading, but the presented model does not incorporate multi-antenna transmissions, cooperation among Willies, or higher mobility speeds.

The conclusion explicitly identifies these three extensions as future work. Because the statement is a future-work agenda rather than an explicit assertion that a concrete question is unknown or unresolved, it does not satisfy the requested strict uncertainty-marker criterion. Accordingly, no qualifying explicit open problem is extracted from this passage.