DMH-HARQ: Reliable and Open Latency-Constrained Wireless Transport Network
Abstract
The extreme requirements for high reliability and low latency in the upcoming Sixth Generation (6G) wireless networks are challenging the design of multi-hop wireless transport networks. Inspired by the advent of the virtualization concept in the wireless networks design and openness paradigm as fostered by the Open-Radio Access Network (O-RAN) Alliance, we target a revolutionary resource allocation scheme to improve the overall transmission efficiency. In this paper, we investigate the problem of automatic repeat request (ARQ) in multi-hop decode-and-forward (DF) relaying in the finite blocklength (FBL) regime, and propose a dynamic scheme of multi-hop hybrid ARQ (HARQ), which maximizes the end-to-end (E2E) communication reliability in the wireless transport network. We also propose an integer dynamic programming (DP) algorithm to efficiently solve the optimal Dynamic Multi-Hop HARQ (DMH-HARQ) strategy. Constrained within a certain time frame to accomplish E2E transmission, our proposed approach is proven to outperform the conventional listening-based cooperative ARQ, as well as any static HARQ strategy, regarding the E2E reliability. It is applicable without dependence on special delay constraint, and is particularly competitive for long-distance transport network with many hops.
Cite
@article{arxiv.2212.03602,
title = {DMH-HARQ: Reliable and Open Latency-Constrained Wireless Transport Network},
author = {Bin Han and Muxia Sun and Yao Zhu and Vincenzo Sciancalepore and Mohammad Asif Habibi and Yulin Hu and Anke Schmeink and Yan-Fu Li and Hans D. Schotten},
journal= {arXiv preprint arXiv:2212.03602},
year = {2026}
}
Comments
To appear in IEEE Transactions on Networking