Bi-Criteria Radio Spectrum Sharing With Subspace-Based Pareto Tracing

IF 7.2 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Communications Pub Date : 2022-03-22 DOI:10.1109/TCOMM.2022.3161516

Zachary J. Grey;Susanna Mosleh;Jacob D. Rezac;Yao Ma;Jason B. Coder;Andrew M. Dienstfrey

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引用次数: 1

Abstract

Radio spectrum is a scarce resource. To meet demands, new wireless technologies must operate in shared spectrum over unlicensed bands (coexist). We consider coexistence of Long-Term Evolution (LTE) License-Assisted Access (LAA) with incumbent Wi-Fi systems. Our scenario consists of multiple LAA and Wi-Fi links sharing an unlicensed band; we aim to simultaneously optimize performance of both coexistence systems. To do this, we present a technique to continuously estimate the Pareto frontier of parameter sets (traces) which approximately maximize all convex combinations of network throughputs over network parameters. We use a dimensionality reduction approach known as active subspaces to determine that this near-optimal parameter set is primarily composed of two physically relevant parameters. A choice of two-dimensional subspace enables visualizations augmenting explainability and the reduced-dimension convex problem results in approximations which dominate random grid search.

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基于子空间Pareto跟踪的双准则无线电频谱共享

无线电频谱是一种稀缺资源。为了满足需求，新的无线技术必须在未经许可的频带上的共享频谱中运行（共存）。我们考虑长期演进（LTE）许可辅助接入（LAA）与现有Wi-Fi系统的共存。我们的场景包括多个LAA和Wi-Fi链路共享一个未经许可的频段；我们的目标是同时优化两个共存系统的性能。为此，我们提出了一种连续估计参数集（轨迹）的Pareto边界的技术，该技术近似最大化网络参数上网络吞吐量的所有凸组合。我们使用一种称为活动子空间的降维方法来确定这个接近最优的参数集主要由两个物理相关的参数组成。二维子空间的选择使得可视化增强了可解释性，并且降维凸问题导致了主导随机网格搜索的近似。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Communications 工程技术-电信学

CiteScore

16.10

自引率

8.40%

发文量

528

审稿时长

4.1 months

期刊介绍： The IEEE Transactions on Communications is dedicated to publishing high-quality manuscripts that showcase advancements in the state-of-the-art of telecommunications. Our scope encompasses all aspects of telecommunications, including telephone, telegraphy, facsimile, and television, facilitated by electromagnetic propagation methods such as radio, wire, aerial, underground, coaxial, and submarine cables, as well as waveguides, communication satellites, and lasers. We cover telecommunications in various settings, including marine, aeronautical, space, and fixed station services, addressing topics such as repeaters, radio relaying, signal storage, regeneration, error detection and correction, multiplexing, carrier techniques, communication switching systems, data communications, and communication theory. Join us in advancing the field of telecommunications through groundbreaking research and innovation.