Weighted Sum Age of Information Minimization in Wireless Networks With Aerial IRS

Lyu, Wanting; Xiu, Yue; Yang, Songjie; Yeoh, Phee Lep; Li, Yonghui; Zhang, Zhongpei

doi:10.1109/tvt.2022.3223691

Cited by 14 publications

(1 citation statement)

References 17 publications

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“…degrees of freedom (DoFs) to reconfigure the wireless environment [4]- [6]. Since electromagnetic wave propagation usually experiences large path loss and non-line-of-sight (NLoS) links, RIS has been exploited in ISAC to improve both radar and communication functionalities.…”

Section: Introductionmentioning

confidence: 99%

Energy-Efficient Cell-Free Network Assisted by Hybrid RISs

Lyu

Xiu

Yang

et al. 2023

IEEE Wireless Commun. Lett.

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This paper investigates the optimization of reconfigurable intelligent surface (RIS) in an integrated sensing and communication (ISAC) system. To meet the demand of growing number of devices, power domain non-orthogonal multiple access (NOMA) is considered. However, traditional NOMA with a large number of devices is challenging due to large decoding delay and propagation error introduced by successive interference cancellation (SIC). Thus, OMA is integrated into NOMA to support more devices. We formulate a max-min problem to optimize the sensing beampattern with constraints on communication rate, through joint power allocation, active beamforming and RIS phase shift design. To solve the non-convex problem with a non-smooth objective function, we propose a low complexity alternating optimization (AO) algorithm, where a closed form expression for the intra-cluster power allocation (intra-CPA) is derived, and penalty and successive convex approximation (SCA) methods are used to optimize the beamforming and phase shift design. Simulation results show the effectiveness of the proposed algorithm in terms of improving minimum beampattern gain (MBPG) compared with other baselines. Furthermore, the trade-off between sensing and communication is analyzed and demonstrated in the simulation results.

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Section: Introductionmentioning

confidence: 99%

Energy-Efficient Cell-Free Network Assisted by Hybrid RISs

Lyu

Xiu

Yang

et al. 2023

IEEE Wireless Commun. Lett.

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Is proportional fair scheduling suitable for age-sensitive traffic?

Akar

Karasan

2023

Computer Networks

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A Survey of Scheduling in 5G URLLC and Outlook for Emerging 6G Systems

et al. 2023

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Future wireless communication is expected to be a paradigm shift from three basic service requirements of 5th Generation (5G) including enhanced Mobile Broadband (eMBB), Ultra Reliable and Low Latency communication (URLLC) and the massive Machine Type Communication (mMTC). Integration of the three heterogeneous services into a single system is a challenging task. The integration includes several design issues including scheduling network resources with various services. Specially, scheduling the URLLC packets with eMBB and mMTC packets need more attention as it is a promising service of 5G and beyond systems. It needs to meet stringent Quality of Service (QoS) requirements and is used in time-critical applications. Thus through understanding of packet scheduling issues in existing system and potential future challenges is necessary. This paper surveys the potential works that addresses the packet scheduling algorithms for 5G and beyond systems in recent years. It provides state of the art review covering three main perspectives such as decentralised, centralised and joint scheduling techniques. The conventional decentralised algorithms are discussed first followed by the centralised algorithms with specific focus on single and multi-connected network perspective. Joint scheduling algorithms are also discussed in details. In order to provide an in-depth understanding of the key scheduling approaches, the performances of some prominent scheduling algorithms are evaluated and analysed. This paper also provides an insight into the potential challenges and future research directions from the scheduling perspective.

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Weighted Sum Age of Information Minimization in Wireless Networks With Aerial IRS

Cited by 14 publications

References 17 publications

Energy-Efficient Cell-Free Network Assisted by Hybrid RISs

Energy-Efficient Cell-Free Network Assisted by Hybrid RISs

Is proportional fair scheduling suitable for age-sensitive traffic?

A Survey of Scheduling in 5G URLLC and Outlook for Emerging 6G Systems

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