Article(id=1251505540451479613, tenantId=1146029695717560320, journalId=1251233954884272221, issueId=1251505536634667461, articleNumber=null, orderNo=null, doi=10.13682/j.issn.2095-6533.2025.06.001, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1735401600000, receivedDateStr=2024-12-29, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1776311772692, onlineDateStr=2026-04-16, pubDate=1762704000000, pubDateStr=2025-11-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776311772692, onlineIssueDateStr=2026-04-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776311772692, creator=13701087609, updateTime=1776311772692, updator=13701087609, issue=Issue{id=1251505536634667461, tenantId=1146029695717560320, journalId=1251233954884272221, year='2025', volume='30', issue='6', pageStart='1', pageEnd='130', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776311771782, creator=13701087609, updateTime=1776311824541, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251505758014226723, tenantId=1146029695717560320, journalId=1251233954884272221, issueId=1251505536634667461, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251505758014226724, tenantId=1146029695717560320, journalId=1251233954884272221, issueId=1251505536634667461, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1, endPage=10, ext={EN=ArticleExt(id=1251505540665389124, articleId=1251505540451479613, tenantId=1146029695717560320, journalId=1251233954884272221, language=EN, title=Resource allocation scheme for perception-based MEC networks with IRS-assisted secure offloading in multi-user BC, columnId=null, journalTitle=Journal of Xi'an University of Posts and Telecommunications, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Aiming at the problems of tight spectrum resources,insufficient computing resources,and easy interception and tampering of information transmission in the Internet of Things(IoT)mobile edge computing(MEC)network,a resource allocation scheme for the IRS-assisted user backscatter communication(BC)technology secure offloading perception MEC network is proposed.By integrating cognitive radio(CR),IRS and BC technologies,an optimization problem targeting the maximization of secure MEC network throughput is constructed,and thejoint optimization solution is carried out by using methods based on block coordinate descent(BCD),Lagrangian duality,and quadratic transformation.Simulation results show that compared with the random IRS phase scheme and the random beamforming scheme,the proposed scheme can increase the task computation amount of secondary users by about 260%and 178%,verifying its effectiveness and feasibility under complex constraint conditions.
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针对物联网(Internet of Things,IoT)移动边缘计算(Mobile Edge Computing,MEC)网络中的频谱资源紧张、计算资源不足及信息传输易被窃听与篡改的问题,提出一种智能反射面(Intelligent Reflecting Surface,IRS)辅助多用户反向散射通信(Backscatter Communication,BC)技术安全卸载的感知MEC网络资源分配方案。通过融合认知无线电(Cognitive Radio,CR)、IRS与BC技术,构建以安全MEC网络吞吐量最大化为目标的优化问题,并采用基于块坐标下降(Block Coordinate Descent,BCD)、拉格朗日对偶及二次变换的方法进行联合优化求解。仿真结果表明,所提方案与随机IRS相位和随机波束成形两个方案相比,次用户可完成的任务量分别提升了约260%和178%,验证了其在复杂约束条件下的有效性与可行性。
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孙连锐(1999-),男,陕西安康人,西安邮电大学硕士研究生,主要研究方向为边缘计算、通感一体化、软件无线电。E-mail: xupzed@163.com |
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刘伯阳(1988-),男,陕西延安人,博士,西安邮电大学副教授,主要研究方向为边缘计算、认知无线电。E-mail: liuboyang@xupt.edu.cn
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刘伯阳(1988-),男,陕西延安人,博士,西安邮电大学副教授,主要研究方向为边缘计算、认知无线电。E-mail: liuboyang@xupt.edu.cn
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孙连锐(1999-),男,陕西安康人,西安邮电大学硕士研究生,主要研究方向为边缘计算、通感一体化、软件无线电。E-mail: xupzed@163.com
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孙连锐(1999-),男,陕西安康人,西安邮电大学硕士研究生,主要研究方向为边缘计算、通感一体化、软件无线电。E-mail: xupzed@163.com
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万宇航(1999-),男,陕西西安人,西安邮电大学硕士研究生,主要研究方向为边缘计算、认知无线电。E-mail: wanyuhang1999@163.com
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万宇航(1999-),男,陕西西安人,西安邮电大学硕士研究生,主要研究方向为边缘计算、认知无线电。E-mail: wanyuhang1999@163.com
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李泽(2000-),男,陕西渭南人,西安邮电大学硕士研究生,主要研究方向为边缘计算、通感一体化、软件无线电。E-mail: lize@stu.xupt.edu.cn
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李泽(2000-),男,陕西渭南人,西安邮电大学硕士研究生,主要研究方向为边缘计算、通感一体化、软件无线电。E-mail: lize@stu.xupt.edu.cn
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贺嘉成(2000-),男,陕西渭南人,西安邮电大学硕士研究生,主要研究方向为边缘计算、通感一体化、软件无线电。E-mail: 230121214@stu.xupt.edu.cn
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贺嘉成(2000-),男,陕西渭南人,西安邮电大学硕士研究生,主要研究方向为边缘计算、通感一体化、软件无线电。E-mail: 230121214@stu.xupt.edu.cn
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72(10):13643-13648., articleTitle=Joint trajectory and resource optimization for RIS assisted UAV cognitive radio, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1251540280671944713, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, xref=null, ext=[AuthorCompanyExt(id=1251540280680333322, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, companyId=1251540280671944713, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Communications and Information Engineering,Xi'an University of Posts and Telecommunications,Xi'an 710121,China), AuthorCompanyExt(id=1251540280688721931, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, companyId=1251540280671944713, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=西安邮电大学通信与信息工程学院,陕西西安 710121)])], figs=[ArticleFig(id=1251540284182577201, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, language=EN, label=null, caption=null, figureFileSmall=zbKfadxqfMInmU0jfa5QBA==, figureFileBig=xttCJZrxPPvhknG00bUnzw==, tableContent=null), ArticleFig(id=1251540284249686066, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, language=CN, label=图1, caption=
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用户总卸载时间和SR数量对用户卸载比特数的影响, figureFileSmall=Y9iLTFAbB2eqEW7m89J9Vw==, figureFileBig=Nl6jbzW51IAQysD11cD37g==, tableContent=null), ArticleFig(id=1251540284736225337, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, language=EN, label=null, caption=null, figureFileSmall=lQ/bOUQ7rv0XXyk8OWKPFA==, figureFileBig=qqsWDHmydVotj+CB0APocA==, tableContent=null), ArticleFig(id=1251540284790751290, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, language=CN, label=图5, caption=
PR接收εth和ST数量K对用户卸载比特数的影响, figureFileSmall=lQ/bOUQ7rv0XXyk8OWKPFA==, figureFileBig=qqsWDHmydVotj+CB0APocA==, tableContent=null), ArticleFig(id=1251540284836888635, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, language=EN, label=null, caption=null, figureFileSmall=W0xMNbXnSGLIhCwCQnS1sQ==, figureFileBig=qTgZxQts8FqgOYdvbZuV7Q==, tableContent=null), ArticleFig(id=1251540284883025980, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, language=CN, label=图6, caption=
3种方案对比结果, figureFileSmall=W0xMNbXnSGLIhCwCQnS1sQ==, figureFileBig=qTgZxQts8FqgOYdvbZuV7Q==, tableContent=null), ArticleFig(id=1251540284933357629, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| ST数量K | 2 |
| 窃听者数量I | 2 |
| SR数量M | 2 |
| RIS反射单元个数L | 10 |
| 噪声功率σ2/W | 1×10-12 |
| 传输带宽B/Hz | 1×106 |
| PT的天线数量NT | 3 |
| 单一 IRS反射单元能耗μ | 0 |
| 窃听者信噪比门限γth/dB | -7.5 |
| PT最大发射功率Pmax/W | 2 |
| 任务卸载时间T/s | 2 |
| ST的电容系数εk | 1×10-27 |
| 单比特所需计算频率Ck/Hz | 1×103 |
| 本地计算频率fk/Hz | 1×106 |
| PR接收信噪比门限εth/dB | 0 |
), ArticleFig(id=1251540284987883582, tenantId=1146029695717560320, journalId=1251233954884272221, articleId=1251505540451479613, language=CN, label=表1, caption=
参数说明和默认值设置
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| 参数 | 数值 |
|---|
| ST数量K | 2 |
| 窃听者数量I | 2 |
| SR数量M | 2 |
| RIS反射单元个数L | 10 |
| 噪声功率σ2/W | 1×10-12 |
| 传输带宽B/Hz | 1×106 |
| PT的天线数量NT | 3 |
| 单一 IRS反射单元能耗μ | 0 |
| 窃听者信噪比门限γth/dB | -7.5 |
| PT最大发射功率Pmax/W | 2 |
| 任务卸载时间T/s | 2 |
| ST的电容系数εk | 1×10-27 |
| 单比特所需计算频率Ck/Hz | 1×103 |
| 本地计算频率fk/Hz | 1×106 |
| PR接收信噪比门限εth/dB | 0 |
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