Research on caching strategy based on transmission delay in Cell-Free massive MIMO systems
To meet the ultra-low latency and ultra-high reliability requirements of users in the future mobile Internet， the wireless caching technology was combined with Cell-Free massive MIMO systems.The caching model was designed based on AP cooperative caching and regional popularity evaluation.The transmi...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2021-12-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021234/ |
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| _version_ | 1841539205886377984 |
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| author | Rui WANG Min SHEN Yun HE Xiangyan LIU |
| author_facet | Rui WANG Min SHEN Yun HE Xiangyan LIU |
| author_sort | Rui WANG |
| collection | DOAJ |
| description | To meet the ultra-low latency and ultra-high reliability requirements of users in the future mobile Internet， the wireless caching technology was combined with Cell-Free massive MIMO systems.The caching model was designed based on AP cooperative caching and regional popularity evaluation.The transmission delay expression involving AP clustering， cooperative caching， and regional popularity was derived， and the content placement problem was expressed as total content transmission delay minimization.Through the demonstration of the NP-hard and submodular monotony of the optimization problem， the greedy algorithm-based optimization strategy was proposed.Simulation results show that the proposed strategy can effectively reduce the content transmission delay and improve the cache hit rate. |
| format | Article |
| id | doaj-art-76af22b76aed4543a25017879c832a6b |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2021-12-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-76af22b76aed4543a25017879c832a6b2025-01-14T07:23:20ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2021-12-014213414359746814Research on caching strategy based on transmission delay in Cell-Free massive MIMO systemsRui WANGMin SHENYun HEXiangyan LIUTo meet the ultra-low latency and ultra-high reliability requirements of users in the future mobile Internet， the wireless caching technology was combined with Cell-Free massive MIMO systems.The caching model was designed based on AP cooperative caching and regional popularity evaluation.The transmission delay expression involving AP clustering， cooperative caching， and regional popularity was derived， and the content placement problem was expressed as total content transmission delay minimization.Through the demonstration of the NP-hard and submodular monotony of the optimization problem， the greedy algorithm-based optimization strategy was proposed.Simulation results show that the proposed strategy can effectively reduce the content transmission delay and improve the cache hit rate.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021234/Cell-Free massive MIMO systemcaching placementcooperative cachingcontent transmission delay |
| spellingShingle | Rui WANG Min SHEN Yun HE Xiangyan LIU Research on caching strategy based on transmission delay in Cell-Free massive MIMO systems Tongxin xuebao Cell-Free massive MIMO system caching placement cooperative caching content transmission delay |
| title | Research on caching strategy based on transmission delay in Cell-Free massive MIMO systems |
| title_full | Research on caching strategy based on transmission delay in Cell-Free massive MIMO systems |
| title_fullStr | Research on caching strategy based on transmission delay in Cell-Free massive MIMO systems |
| title_full_unstemmed | Research on caching strategy based on transmission delay in Cell-Free massive MIMO systems |
| title_short | Research on caching strategy based on transmission delay in Cell-Free massive MIMO systems |
| title_sort | research on caching strategy based on transmission delay in cell free massive mimo systems |
| topic | Cell-Free massive MIMO system caching placement cooperative caching content transmission delay |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021234/ |
| work_keys_str_mv | AT ruiwang researchoncachingstrategybasedontransmissiondelayincellfreemassivemimosystems AT minshen researchoncachingstrategybasedontransmissiondelayincellfreemassivemimosystems AT yunhe researchoncachingstrategybasedontransmissiondelayincellfreemassivemimosystems AT xiangyanliu researchoncachingstrategybasedontransmissiondelayincellfreemassivemimosystems |