Article(id=1251480541535617422, tenantId=1146029695717560320, journalId=1251234078029037663, issueId=1251480531381207309, articleNumber=null, orderNo=null, doi=10.11887/j.issn.1001-2486.25050027, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1750003200000, receivedDateStr=2025-06-16, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1776305812486, onlineDateStr=2026-04-16, pubDate=1766851200000, pubDateStr=2025-12-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776305812486, onlineIssueDateStr=2026-04-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776305812486, creator=13701087609, updateTime=1776305812486, updator=13701087609, issue=Issue{id=1251480531381207309, tenantId=1146029695717560320, journalId=1251234078029037663, year='2025', volume='47', issue='6', pageStart='1', pageEnd='306', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776305810065, creator=13701087609, updateTime=1776305899308, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251480905865446141, tenantId=1146029695717560320, journalId=1251234078029037663, issueId=1251480531381207309, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251480905865446142, tenantId=1146029695717560320, journalId=1251234078029037663, issueId=1251480531381207309, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=46, endPage=59, ext={EN=ArticleExt(id=1251480545545372229, articleId=1251480541535617422, tenantId=1146029695717560320, journalId=1251234078029037663, language=EN, title=Segment routing optimization algorithm fusing deep reinforcement learning and load centrality theory, columnId=1251480536670220899, journalTitle=Journal of National Niversity of Defense Technology, columnName=Computer System and technology, runingTitle=null, highlight=null, articleAbstract=
Combining software defined networking and SR(segment routing)can optimize network performance, but in large-scale dynamic networks, excessive link utilization at key nodes can lead to a surge in queue delays.To address this, a SROD-LC(segment routing optimization algorithm based on deep reinforcement learning and load centrality theory)was proposed.By quantifying the importance of network nodes using load centrality theory, key nodes are identified and their link load states are monitored;utilizing a multi-agent reinforcement learning framework, distributed deep reinforcement learning agents are deployed at key nodes, coordinating routing decisions through a shared reward mechanism to achieve proactive optimization of link loads.At the same time, leveraging the flexibility of SR, segment identifier lists are dynamically adjusted to quickly reroute partial traffic, reducing local link utilization and avoiding potential congestion.Simulation experiments based on real network topologies show that when the proportion of SR key nodes is in the range of 0.3~0.5, the SROD-LC algorithm exhibits significant optimization effects, reducing the network′s maximum link utilization by 21%~35% compared to baseline algorithms.
, correspAuthors=Qiang TANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Jijun CAO, Zongming WU, Qiang TANG, Xiaoyu LI), CN=ArticleExt(id=1251480553569076211, articleId=1251480541535617422, tenantId=1146029695717560320, journalId=1251234078029037663, language=CN, title=深度强化学习和负载中心性理论融合的分段路由优化算法, columnId=1251480538381496943, journalTitle=国防科技大学学报, columnName=计算机系统与技术, runingTitle=null, highlight=null, articleAbstract=
结合软件定义网络与分段路由(segment routing,SR)可优化网络性能,但在大规模动态网络中,其关键节点链路利用率过高会导致队列延迟激增。为此,提出深度强化学习与负载中心性理论融合的分段路由优化算法(segment routing optimization algorithm fusing deep reinforcement learning and load centrality theory,SROD-LC)。通过负载中心性理论量化网络节点重要性,识别关键节点并监控其链路负载状态;利用多智能体强化学习框架,在关键节点部署分布式深度强化学习智能体,通过共享奖励机制协调路由决策,实现链路负载的主动优化。同时结合SR的灵活性,动态调整段标识列表快速重路由部分流量,降低本地链路利用率并规避潜在拥塞。基于真实网络拓扑的模拟实验结果表明:当SR关键节点比例在0.3~0.5范围时,SROD-LC优化效果显著,与基准算法相比,可将网络最大链路利用率降低21%~35%。
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Detailed structure of the SROD-LC training phase, figureFileSmall=qdBrSRLA5esDOcyCvtHfLw==, figureFileBig=Vr0OFZlcr5e4f96+P8aVQw==, tableContent=null), ArticleFig(id=1251480558581268767, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=CN, label=图2, caption=
SROD-LC训练阶段详细结构, figureFileSmall=qdBrSRLA5esDOcyCvtHfLw==, figureFileBig=Vr0OFZlcr5e4f96+P8aVQw==, tableContent=null), ArticleFig(id=1251480558677737767, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=EN, label=Alg.1, caption=
SROD-LC routing optimization algorithm, figureFileSmall=fVnXwU9W1jiqRtRELhoezA==, figureFileBig=ZesflLyylBImrllDGzFyeA==, tableContent=null), ArticleFig(id=1251480558795178287, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=CN, label=算法1, caption=
SROD-LC路由优化算法, figureFileSmall=fVnXwU9W1jiqRtRELhoezA==, figureFileBig=ZesflLyylBImrllDGzFyeA==, tableContent=null), ArticleFig(id=1251480558916813111, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=EN, label=Fig.3, caption=
Reward value variation trend as iteration times increase, figureFileSmall=HfWH2buOszO/TcPDN78ESQ==, figureFileBig=4WPqPiISa2mo+4HWzFRZ+w==, tableContent=null), ArticleFig(id=1251480560477094209, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=CN, label=图3, caption=
奖励值随训练迭代次数的变化趋势, figureFileSmall=HfWH2buOszO/TcPDN78ESQ==, figureFileBig=4WPqPiISa2mo+4HWzFRZ+w==, tableContent=null), ArticleFig(id=1251480560586146121, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=EN, label=Fig.4, caption=
Performance comparison of different key node selection ratios and schemes, figureFileSmall=s1yYz4iclFogIVli5fn8fA==, figureFileBig=xeGaj2lUlRttHcaIjHp0ZQ==, tableContent=null), ArticleFig(id=1251480560686809422, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=CN, label=图4, caption=
不同关键节点比例与选取方案的性能对比, figureFileSmall=s1yYz4iclFogIVli5fn8fA==, figureFileBig=xeGaj2lUlRttHcaIjHp0ZQ==, tableContent=null), ArticleFig(id=1251480560791667027, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=EN, label=Fig.5, caption=
Performance comparison of various SR routing algorithms, figureFileSmall=jWpIjIEWVjchFjZ7182X+g==, figureFileBig=zPXDAA7EXSyxgaW3JM+/EA==, tableContent=null), ArticleFig(id=1251480560900718938, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=CN, label=图5, caption=
各种SR路由算法的性能对比, figureFileSmall=jWpIjIEWVjchFjZ7182X+g==, figureFileBig=zPXDAA7EXSyxgaW3JM+/EA==, tableContent=null), ArticleFig(id=1251480560988799327, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=EN, label=Fig.6, caption=
Comparison of network performance with different key node change thresholds μ, figureFileSmall=MozrxIld8iCxmJUbnTiwYg==, figureFileBig=VytFF1Hb78W3L3D869Ip7Q==, tableContent=null), ArticleFig(id=1251480561110434154, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=CN, label=图6, caption=
不同关键节点变动阈值μ的网络性能对比, figureFileSmall=MozrxIld8iCxmJUbnTiwYg==, figureFileBig=VytFF1Hb78W3L3D869Ip7Q==, tableContent=null), ArticleFig(id=1251480561236263280, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=EN, label=Tab.1, caption=
Time cost range of various SR routing algorithms
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | GEANT | germany50 |
|---|
| tmin | tmax | tAverage | tmin | tmax | tAverage |
|---|
| Original | 125.2 | 135.5 | 130.8 | 138.5 | 155.9 | 148.2 |
| SR-LILLC | 26.4 | 36.6 | 31.7 | 32.1 | 46.6 | 38.3 |
| CM | 19.6 | 26.4 | 22.8 | 26.5 | 38.8 | 33.8 |
| SROD-LC | 22.5 | 32.2 | 23.7 | 29.2 | 42.6 | 30.5 |
), ArticleFig(id=1251480561303372148, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480541535617422, language=CN, label=表1, caption=
各种SR路由算法的时间开销范围
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | GEANT | germany50 |
|---|
| tmin | tmax | tAverage | tmin | tmax | tAverage |
|---|
| Original | 125.2 | 135.5 | 130.8 | 138.5 | 155.9 | 148.2 |
| SR-LILLC | 26.4 | 36.6 | 31.7 | 32.1 | 46.6 | 38.3 |
| CM | 19.6 | 26.4 | 22.8 | 26.5 | 38.8 | 33.8 |
| SROD-LC | 22.5 | 32.2 | 23.7 | 29.2 | 42.6 | 30.5 |
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