Application of 2.4 GHz Frequency Band Anti-Interference Performance Improvement and Transformation Based on CBTC Vehicle-Ground Wireless Communication System
［Objective］Urban rail transit uses a 2.4 GHz frequency band vehicle-ground wireless communication system for the signal system, which is extremely susceptible to interference from communication operators, civilian WiFi, personal hotspots, Bluetooth, RFID (radio frequency identification) technology a...
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| Format: | Article |
| Language: | zho |
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Urban Mass Transit Magazine Press
2024-12-01
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| Series: | Chengshi guidao jiaotong yanjiu |
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| Online Access: | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2024.12.043.html |
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| _version_ | 1846127847040614400 |
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| author | ZHAN Lihui CHEN Shuhua WANG Lei |
| author_facet | ZHAN Lihui CHEN Shuhua WANG Lei |
| author_sort | ZHAN Lihui |
| collection | DOAJ |
| description | ［Objective］Urban rail transit uses a 2.4 GHz frequency band vehicle-ground wireless communication system for the signal system, which is extremely susceptible to interference from communication operators, civilian WiFi, personal hotspots, Bluetooth, RFID (radio frequency identification) technology and other equipment, resulting in frequent vehicle-ground communication interruptions and even affecting the normal operation of trains. Therefore, it is necessary to study the anti-interference performance and application transformation measures of the 2.4 GHz frequency band in CBTC (communication-based train control) vehicle-ground wireless communication system. ［Method］The problem of train emergency braking failure caused by vehicle-ground communication interruption, as well as the solution to improve anti-interference performance are introduced; taking a certain metro line in Hangzhou as example, a 5.8 GHz frequency band transformation project is carried out through on-site testing and other methods. ［Result & Conclusion］The anti-interference performance is improved by taking various measures such as investigating and rectifying fixed interference sources, installing shielding devices, and adjusting the frequency bands of communication operators. Based on current situations of the 5.8 GHz frequency band application and channel occupancy in the line network, the vehicle-ground wireless networking mode is transformed from 2.4 GHz (A network)+2.4 GHz (B network) to 2.4 GHz (A network)+5.8 GHz (B network). After taking a variety of anti-interference measures, vehicle-ground communication failures are alleviated. Through the transformation and application of the 5.8 GHz frequency band, the train emergency braking problem caused by vehicle-ground wireless communication interruption on a certain line of Hangzhou Metro is solved. |
| format | Article |
| id | doaj-art-d9a7556cf4c945d5bed51e7487e32ed8 |
| institution | Kabale University |
| issn | 1007-869X |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Urban Mass Transit Magazine Press |
| record_format | Article |
| series | Chengshi guidao jiaotong yanjiu |
| spelling | doaj-art-d9a7556cf4c945d5bed51e7487e32ed82024-12-11T08:28:04ZzhoUrban Mass Transit Magazine PressChengshi guidao jiaotong yanjiu1007-869X2024-12-01271226326610.16037/j.1007-869x.2024.12.043Application of 2.4 GHz Frequency Band Anti-Interference Performance Improvement and Transformation Based on CBTC Vehicle-Ground Wireless Communication SystemZHAN Lihui0CHEN Shuhua1WANG Lei2Hangzhou Metro Operation Co, Ltd, 310017, Hangzhou, ChinaHangzhou Metro Operation Co, Ltd, 310017, Hangzhou, ChinaHangzhou Metro Operation Co, Ltd, 310017, Hangzhou, China［Objective］Urban rail transit uses a 2.4 GHz frequency band vehicle-ground wireless communication system for the signal system, which is extremely susceptible to interference from communication operators, civilian WiFi, personal hotspots, Bluetooth, RFID (radio frequency identification) technology and other equipment, resulting in frequent vehicle-ground communication interruptions and even affecting the normal operation of trains. Therefore, it is necessary to study the anti-interference performance and application transformation measures of the 2.4 GHz frequency band in CBTC (communication-based train control) vehicle-ground wireless communication system. ［Method］The problem of train emergency braking failure caused by vehicle-ground communication interruption, as well as the solution to improve anti-interference performance are introduced; taking a certain metro line in Hangzhou as example, a 5.8 GHz frequency band transformation project is carried out through on-site testing and other methods. ［Result & Conclusion］The anti-interference performance is improved by taking various measures such as investigating and rectifying fixed interference sources, installing shielding devices, and adjusting the frequency bands of communication operators. Based on current situations of the 5.8 GHz frequency band application and channel occupancy in the line network, the vehicle-ground wireless networking mode is transformed from 2.4 GHz (A network)+2.4 GHz (B network) to 2.4 GHz (A network)+5.8 GHz (B network). After taking a variety of anti-interference measures, vehicle-ground communication failures are alleviated. Through the transformation and application of the 5.8 GHz frequency band, the train emergency braking problem caused by vehicle-ground wireless communication interruption on a certain line of Hangzhou Metro is solved.https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2024.12.043.htmlurban rail transitvehicle-ground communication systemanti-interference performance |
| spellingShingle | ZHAN Lihui CHEN Shuhua WANG Lei Application of 2.4 GHz Frequency Band Anti-Interference Performance Improvement and Transformation Based on CBTC Vehicle-Ground Wireless Communication System Chengshi guidao jiaotong yanjiu urban rail transit vehicle-ground communication system anti-interference performance |
| title | Application of 2.4 GHz Frequency Band Anti-Interference Performance Improvement and Transformation Based on CBTC Vehicle-Ground Wireless Communication System |
| title_full | Application of 2.4 GHz Frequency Band Anti-Interference Performance Improvement and Transformation Based on CBTC Vehicle-Ground Wireless Communication System |
| title_fullStr | Application of 2.4 GHz Frequency Band Anti-Interference Performance Improvement and Transformation Based on CBTC Vehicle-Ground Wireless Communication System |
| title_full_unstemmed | Application of 2.4 GHz Frequency Band Anti-Interference Performance Improvement and Transformation Based on CBTC Vehicle-Ground Wireless Communication System |
| title_short | Application of 2.4 GHz Frequency Band Anti-Interference Performance Improvement and Transformation Based on CBTC Vehicle-Ground Wireless Communication System |
| title_sort | application of 2 4 ghz frequency band anti interference performance improvement and transformation based on cbtc vehicle ground wireless communication system |
| topic | urban rail transit vehicle-ground communication system anti-interference performance |
| url | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2024.12.043.html |
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