标题： DMH-HARQ：可靠且开放的时延约束无线传输网络 显示英文标题

标题： DMH-HARQ: Reliable and Open Latency-Constrained Wireless Transport Network

摘要： 在即将到来的第六代（6G）无线网络中，对高可靠性和低延迟的极端需求正在挑战多跳无线传输网络的设计。 受无线网络设计中虚拟化概念和由开放无线接入网（O-RAN）联盟推动的开放范式的启发，我们旨在提出一种革命性的资源分配方案，以提高整体传输效率。 在本文中，我们研究了有限码长（FBL）条件下多跳解码转发（DF）中自动重传请求（ARQ）的问题，并提出了一种多跳混合ARQ（HARQ）的动态方案，该方案在无线传输网络中最大化端到端（E2E）通信可靠性。 我们还提出了一种整数动态规划（DP）算法，以高效解决最优动态多跳HARQ（DMH-HARQ）策略。 在一定时间范围内完成E2E传输的约束下，我们的方法被证明在E2E可靠性方面优于传统的基于监听的协作ARQ以及任何静态HARQ策略。 它不依赖于特殊的延迟约束，并且在具有许多跳数的长距离传输网络中尤其具有竞争力。 显示英文摘要

摘要： 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.