基于终端电池状态信息的SWIPT公平传输策略

doi:10.11959/j.issn.1000-436x.2020089

通信学报 ›› 2020, Vol. 41 ›› Issue (5): 112-119.doi: 10.11959/j.issn.1000-436x.2020089

基于终端电池状态信息的SWIPT公平传输策略

胡志蕊

杭州电子科技大学通信工程学院，浙江杭州 310018

修回日期:2020-04-04 出版日期:2020-05-25 发布日期:2020-05-30
作者简介:胡志蕊（1987- ），女，山东德州人，博士，杭州电子科技大学讲师，主要研究方向为协作通信、资源分配、信能同传技术
基金资助:
浙江省自然科学基金资助项目(LQ18F010005);浙江省自然科学基金资助项目(LY20F010009);浙江省教育厅科研基金资助项目(Y201738005)

Terminal battery status information based fairness-aware SWIPT strategy

Zhirui HU

School of Communication Engineering,Hangzhou Dianzi University,Hangzhou 310018,China

Revised:2020-04-04 Online:2020-05-25 Published:2020-05-30
Supported by:
The Natural Science Foundation of Zhejiang Province(LQ18F010005);The Natural Science Foundation of Zhejiang Province(LY20F010009);Scientific Research Project of Zhejiang Provincial Department of Education(Y201738005)

摘要/Abstract

摘要：

针对终端电量耗尽的问题，提出将终端电池状态信息考虑到 SWIPT 传输策略中，并提供了一种速率公平传输策略。所提方案利用终端电池状态信息限制终端可容忍的最大速率及能量，以最大化最小用户速率为优化目标，以速率/能量需求以及终端可容忍的最大速率/能量为限制条件，优化发送功率与功率分流因子。为了求解该优化问题，首先根据电池电量对终端进行分类，然后利用提出的基于交替优化的算法进行求解。所提方案通过合理分配发送功率与功率分流因子，控制较低电量用户的接收速率，以避免其所需能量消耗超过电池电量。仿真结果表明，所提方案延长了用户电池寿命且避免了电池电量的耗尽，其用户速率公平性随着用户间电池电量差距的减小而提升。

关键词: 无线信息与能量同时传输, 功率分配, 电池电量约束

Abstract:

To solve the battery depletion problem,the terminals’ battery status information (BSI) was proposed to be taken into consideration in simultaneous wireless information and power transfer (SWIPT) strategies,and a SWIPT strategy to guarantee the rate fairness was provided.BSI determined the terminals’ sufferable received rate and harvested energy.The proposed scheme was formulated as an optimization problem to max-min user rate,with rate/energy requirement constraints and the sufferable rate/energy constraints.To solve optimization problem,the receivers were firstly classified with their battery level,then the optimal solutions were obtained by the proposed iteration optimization-based algorithm.With the proposed scheme,the transmit power and the power splitting factor would be controlled and the data rate at receivers,especially the receivers that with lower battery level would be restricted,avoiding the required battery consumption to exceed battery level.Simulation results reveal that the proposed scheme can prolong battery lifetime and avoid the battery depletion problem,and its fairness performance is strengthened with the difference decreasing among the receivers’ battery level.

Key words: simultaneous wireless information and power transfer, power allocation, battery level constraint

中图分类号:

TN929.5

胡志蕊. 基于终端电池状态信息的SWIPT公平传输策略[J]. 通信学报, 2020, 41(5): 112-119.

Zhirui HU. Terminal battery status information based fairness-aware SWIPT strategy[J]. Journal on Communications, 2020, 41(5): 112-119.

图/表 5

参考文献 10

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基于终端电池状态信息的SWIPT公平传输策略

Terminal battery status information based fairness-aware SWIPT strategy

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