Age of Information Analysis for CR-NOMA Aided Uplink Systems With Randomly Arrived Packets

IF 8.3 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Communications Pub Date : 2024-12-24 DOI:10.1109/TCOMM.2024.3522048

Yanshi Sun;Yanglin Ye;Zhiguo Ding;Momiao Zhou;Lei Liu

引用次数: 0

Abstract

This paper studies the application of cognitive radio inspired non-orthogonal multiple access (CR-NOMA) to reduce age of information (AoI) for uplink transmission. In particular, a time division multiple access (TDMA) based legacy network is considered, where each user is allocated with a dedicated time slot to transmit its status update information. The CR-NOMA is implemented as an add-on to the TDMA legacy network, which enables each user to have more opportunities to transmit by sharing other user’s time slots. A rigorous analytical framework is developed to obtain the expressions for AoIs achieved by CR-NOMA with and without re-transmission, by taking the randomness of the status update generating process into consideration. Numerical results are presented to verify the accuracy of the developed analysis. It is shown that the AoI can be significantly reduced by applying CR-NOMA compared to TDMA.Moreover, the use of re-transmission is helpful to reduce AoI, especially when the status arrival rate is low.

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随机分组CR-NOMA辅助上行系统的信息分析时代

研究了认知无线电启发的非正交多址（CR-NOMA）在降低上行传输信息年龄（AoI）中的应用。特别地，考虑了基于时分多址（TDMA）的遗留网络，其中为每个用户分配了专用时隙来传输其状态更新信息。CR-NOMA是作为TDMA传统网络的附加组件实现的，通过共享其他用户的时隙，每个用户都有更多的传输机会。考虑状态更新产生过程的随机性，建立了严格的分析框架，得到了CR-NOMA在有和没有重传情况下获得的aoi表达式。数值结果验证了所建分析的准确性。结果表明，与TDMA相比，采用CR-NOMA可以显著降低AoI。此外，使用重传有助于降低AoI，特别是当状态到达率较低时。

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.