Research on boosting self-sustainability for RIS-aided multi-cluster wireless powered communication networks

SHAO Kai; MAO Tiantian; WANG Guangyu; CHU Zheng

doi:10.11959/j.issn.1000-436x.2025096

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Research on boosting self-sustainability for RIS-aided multi-cluster wireless powered communication networks

Papers | 更新时间：2025-07-04

- Research on boosting self-sustainability for RIS-aided multi-cluster wireless powered communication networks
- Journal on Communications Vol. 46, Issue 6, Pages: 185-195(2025)
- 作者机构：
  
  1.重庆邮电大学通信与信息工程学院，重庆 400065
  2.移动通信技术重庆市重点实验室，重庆 400065
  3.宁波诺丁汉大学电气与电子工程系，浙江宁波 315100
- 作者简介：
- 基金信息：
  
  The Ningbo Natural Science Foundation(2024J233)
- DOI：10.11959/j.issn.1000-436x.2025096
  CLC： TN92
- Received：24 December 2024，
  
  Revised：2025-05-19，
  
  Published：25 June 2025
- 稿件说明：
移动端阅览
邵凯,毛恬恬,王光宇等.RIS赋能多集群无线携能通信网络的自维持能力增强性研究[J].通信学报,2025,46(06):185-195.

SHAO Kai,MAO Tiantian,WANG Guangyu,et al.Research on boosting self-sustainability for RIS-aided multi-cluster wireless powered communication networks[J].Journal on Communications,2025,46(06):185-195.
邵凯,毛恬恬,王光宇等.RIS赋能多集群无线携能通信网络的自维持能力增强性研究[J].通信学报,2025,46(06):185-195. DOI： 10.11959/j.issn.1000-436x.2025096.

SHAO Kai,MAO Tiantian,WANG Guangyu,et al.Research on boosting self-sustainability for RIS-aided multi-cluster wireless powered communication networks[J].Journal on Communications,2025,46(06):185-195. DOI： 10.11959/j.issn.1000-436x.2025096.

摘要

研究了由可重构智能表面（RIS）辅助的多集群无线携能通信网络（WPCN）通信性能最大化问题。为提升网络的自我维持能力，约束了网络设备的信噪比（SNR），并提出了一种混合时分多址（TDMA-TDMA）传输方案。首先，为避免集群间干扰采用TDMA模式轮询集群；其次，基于RIS的时间选择性，在单集群内采用TDMA策略设计无源波束成形和时间分配。所建立的优化问题，采用非线性能量采集（NLEH）模型，考虑了RIS的相移误差（PSE）、传输时间、用户的SNR和不完美信道状态信息（CSI）等约束条件。仿真结果表明，与传统的资源分配方案相比，所提方案提高了网络边缘用户生存能力，有效地保证了网络生命周期。

Abstract

The performance maximization was investigated in a reconfigurable intelligent surface (RIS) assisted multi-cluster wireless powered communication network (WPCN). To enhance the self-sustaining capability of the network

the signal-to-noise ratio (SNR) of network devices was constrained and a hybrid time division multiple access (TDMA-TDMA) transmission scheme was proposed. Firstly

the TDMA was used to poll the cluster for avoiding the inter-cluster interference. Secondly

based on RIS’s time selectivity

passive beamforming and time allocation were designed by using TDMA strategy within a single cluster. A nonlinear energy harvesting (NLEH) model was adopted in the established optimization problem

with constraints on phase shift error (PSE) of RIS

transmission time SNR of users

and imperfect channel state information (CSI). Simulation results show that

the proposed scheme improves the survivability of network edge users and effectively ensures the network lifecycle

compared with traditional resource allocation schemes.

关键词

Keywords

references

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