A novel channel access algorithm based on clusters and MAB model in cognitive vehicular network
Considering the cognitive channel access problem of vehicle nodes in cognitive vehicular networks with heavy traffic environment,a channel access algorithm called clusters-UCB which based on clusters and MAB model was proposed.The cooperation of cluster members could improve perception accuracy and...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2016-07-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2016184/ |
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| _version_ | 1841529137277173760 |
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| author | Fei PENG Guoan ZHANG Yuqi YANG |
| author_facet | Fei PENG Guoan ZHANG Yuqi YANG |
| author_sort | Fei PENG |
| collection | DOAJ |
| description | Considering the cognitive channel access problem of vehicle nodes in cognitive vehicular networks with heavy traffic environment,a channel access algorithm called clusters-UCB which based on clusters and MAB model was proposed.The cooperation of cluster members could improve perception accuracy and enhance the learning speed.And using improved multi-user UCB algorithm,cluster heads could quickly search out the optimal channel in a distributed way,which could make the network asymptotically achieve the optimal slot throughput.Simulation results show that with respect to UCB algorithm and ε-greedy algorithm,the regret of the proposed algorithm is lower and the speed of approaching logarithmic form is faster.What's more,clusters-UCB can effectively reduce the number of collisions when clusters access the cognitive channels,ensuring the fairness of the channel access and achieving better slot throughput. |
| format | Article |
| id | doaj-art-fdc087685a2046a796d433b2d23bbdf8 |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2016-07-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-fdc087685a2046a796d433b2d23bbdf82025-01-15T03:25:04ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012016-07-0132273359800829A novel channel access algorithm based on clusters and MAB model in cognitive vehicular networkFei PENGGuoan ZHANGYuqi YANGConsidering the cognitive channel access problem of vehicle nodes in cognitive vehicular networks with heavy traffic environment,a channel access algorithm called clusters-UCB which based on clusters and MAB model was proposed.The cooperation of cluster members could improve perception accuracy and enhance the learning speed.And using improved multi-user UCB algorithm,cluster heads could quickly search out the optimal channel in a distributed way,which could make the network asymptotically achieve the optimal slot throughput.Simulation results show that with respect to UCB algorithm and ε-greedy algorithm,the regret of the proposed algorithm is lower and the speed of approaching logarithmic form is faster.What's more,clusters-UCB can effectively reduce the number of collisions when clusters access the cognitive channels,ensuring the fairness of the channel access and achieving better slot throughput.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2016184/cognitive vehicular networkclusterchannel accessMAB modelUCB algorithm |
| spellingShingle | Fei PENG Guoan ZHANG Yuqi YANG A novel channel access algorithm based on clusters and MAB model in cognitive vehicular network Dianxin kexue cognitive vehicular network cluster channel access MAB model UCB algorithm |
| title | A novel channel access algorithm based on clusters and MAB model in cognitive vehicular network |
| title_full | A novel channel access algorithm based on clusters and MAB model in cognitive vehicular network |
| title_fullStr | A novel channel access algorithm based on clusters and MAB model in cognitive vehicular network |
| title_full_unstemmed | A novel channel access algorithm based on clusters and MAB model in cognitive vehicular network |
| title_short | A novel channel access algorithm based on clusters and MAB model in cognitive vehicular network |
| title_sort | novel channel access algorithm based on clusters and mab model in cognitive vehicular network |
| topic | cognitive vehicular network cluster channel access MAB model UCB algorithm |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2016184/ |
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