# Admission Control based Traffic-Agnostic Delay-Constrained Random Access (AC/DC-RA) for M2M Communication

## TL;DR

This paper introduces AC/DC-RA, a novel random access protocol for M2M communication that guarantees delay constraints regardless of traffic variations by using admission control and collision estimation.

## Contribution

The paper presents a traffic-agnostic delay-constrained random access protocol with an innovative admission control and collision estimation, ensuring stability under varying traffic loads.

## Key findings

- Provides stochastic delay guarantees independent of traffic patterns
- Achieves stable performance with Poisson and Beta arrivals
- No protocol modifications needed for different traffic types

## Abstract

The problem of wireless M2M communication is twofold: the reliability aspect and the scalability aspect. The solution of this problem demands a delay constrained random access protocol. To this end we propose Admission Control based Traffic Agnostic Delay Constrained Random Access (AC/DC-RA) protocol. Our main contribution is enabling the stochastic delay constraints agnostic to the traffic, such that the stochastic delay constraint is valid with respect to varying number of arrivals. We achieve this with an admission control decision that uses a novel collision estimation algorithm for active number of arrivals per contention resource. We use an adaptive contention resolution algorithm to react to the varying number of arrivals. Using these tools, the admission control solves the stability problem. We show with simulations that AC/DC-RA provide stochastic delay constrained random access in a traffic agnostic way to sustain a stable performance against Poisson and Beta arrivals without any modification to the protocol.