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arXiv 2501.10285cs.NI
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面向5G及后5G网络的数据驱动在线切片接纳控制与资源分配

Data-driven Online Slice Admission Control and Resource Allocation for 5G and Beyond Networks

Muhammad Sulaiman, Bo Sun, Mohammad Ali Salahuddin, Raouf Boutaba, Aladdin Saleh

AI总结:

针对5G及后5G网络切片接纳控制与资源分配的多约束实时决策难题,提出带竞争比上界保证的数据驱动框架,结合动态定价、机器学习切片模型与原始-对偶算法,经真实测试床数据验证,经验竞争比最高较基准提升42%。

摘要:

5G及后5G网络中的虚拟化技术支持创建虚拟网络(即网络切片),以定制化满足各类应用的需求。然而,这种灵活性给基础设施提供商(InP)在切片接纳控制(AC)和资源分配方面带来了若干挑战。为实现收益最大化,InP需要在切片收益、基础设施资源有限、资源分配与服务质量(QoS)的映射关系未知、未来切片请求(SR)不可预测的条件下,实时决策是否接纳新的切片请求。\n为应对这些挑战,本文提出了一种新型数据驱动的5G切片接纳控制框架,该框架可保证竞争比(即先知方案获得的收益与在线方案收益的比值)存在确定上界。所提框架利用定价函数动态估算反映资源稀缺程度的资源伪价格,再将这类价格与资源分配算法结合:该算法采用机器学习训练的切片模型,并运用原始-对偶算法确定成本最低的资源分配方案。随后将资源成本与切片请求提供的收益对比,以决定接纳或拒绝该请求。\n为验证框架的有效性,我们利用从5G测试床采集的真实轨迹训练了该数据驱动切片模型。结果表明,与其他基准算法相比,本文提出的新方法在经验竞争比(即最优方案与在线方案的收益比)上的提升幅度最高可达42%。

英文摘要:

Virtualization in 5G and beyond networks allows the creation of virtual networks, or network slices, tailored to meet the requirements of various applications. However, this flexibility introduces several challenges for infrastructure providers (InPs) in slice admission control (AC) and resource allocation. To maximize revenue, InPs must decide in real-time whether to admit new slice requests (SRs) given slices' revenues, limited infrastructure resources, unknown relationship between resource allocation and Quality of Service (QoS), and the unpredictability of future SRs. To address these challenges, this paper introduces a novel data-driven framework for 5G slice admission control that offers a guaranteed upper bound on the competitive ratio, i.e., the ratio between the revenue obtained by an oracle solution and that of the online solution. The proposed framework leverages a pricing function to dynamically estimate resources' pseudo-prices that reflect resource scarcity. Such prices are further coupled with a resource allocation algorithm, which leverages a machine-learned slice model and employs a primal-dual algorithm to determine the minimum-cost resource allocation. The resource cost is then compared with the offered revenue to admit or reject a SR. To demonstrate the efficacy of our framework, we train the data-driven slice model using real traces collected from our 5G testbed. Our results show that our novel approach achieves up to 42% improvement in the empirical competitive ratio, i.e., ratio between the optimal and the online solution, compared to other benchmark algorithms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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