Toward Throughput Optimization: A Congestion Control Scheme for CAM Delivery via NR Sidelink
In the new radio (NR) vehicle-to-everything (V2X), congestion control (CC) is adopted to reduce channel occupancy and improve delivery performance. However, most existing CC schemes decide to adjust the number of messages while ignoring the throughput requirements, which may lead to serious traffic...
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| Veröffentlicht in: | IEEE internet of things journal Jg. 12; H. 9; S. 12206 - 12218 |
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| Sprache: | Englisch |
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01.05.2025
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| Abstract | In the new radio (NR) vehicle-to-everything (V2X), congestion control (CC) is adopted to reduce channel occupancy and improve delivery performance. However, most existing CC schemes decide to adjust the number of messages while ignoring the throughput requirements, which may lead to serious traffic accidents due to the loss of information. In light of this, we investigate the performance of cooperative awareness messages (CAMs) delivery via NR sidelink under different CC configurations, including the modulation and coding scheme, the semi-persistent scheduling-based resource allocation, as well as the CAM transmission period. Specifically, taking into account these configurations, we develop a theoretical framework to capture two metrics of CAM delivery, namely the effective throughput and the channel busy ratio, based on the stochastic geometry approach. With the help of this framework, we propose the CC-(m,n,<inline-formula> <tex-math notation="LaTeX">\tau </tex-math></inline-formula>) scheme, which is able to optimize the two metrics simultaneously by properly tuning the parameters m, n, and <inline-formula> <tex-math notation="LaTeX">\tau </tex-math></inline-formula>. Extensive numerical results show that the proposed scheme is highly beneficial for efficient and reliable CAM delivery via NR sidelink, particularly in scenarios with high vehicle densities. |
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| AbstractList | In the new radio (NR) vehicle-to-everything (V2X), congestion control (CC) is adopted to reduce channel occupancy and improve delivery performance. However, most existing CC schemes decide to adjust the number of messages while ignoring the throughput requirements, which may lead to serious traffic accidents due to the loss of information. In light of this, we investigate the performance of cooperative awareness messages (CAMs) delivery via NR sidelink under different CC configurations, including the modulation and coding scheme, the semi-persistent scheduling-based resource allocation, as well as the CAM transmission period. Specifically, taking into account these configurations, we develop a theoretical framework to capture two metrics of CAM delivery, namely the effective throughput and the channel busy ratio, based on the stochastic geometry approach. With the help of this framework, we propose the CC-(m,n,<inline-formula> <tex-math notation="LaTeX">\tau </tex-math></inline-formula>) scheme, which is able to optimize the two metrics simultaneously by properly tuning the parameters m, n, and <inline-formula> <tex-math notation="LaTeX">\tau </tex-math></inline-formula>. Extensive numerical results show that the proposed scheme is highly beneficial for efficient and reliable CAM delivery via NR sidelink, particularly in scenarios with high vehicle densities. In the new radio (NR) vehicle-to-everything (V2X), congestion control (CC) is adopted to reduce channel occupancy and improve delivery performance. However, most existing CC schemes decide to adjust the number of messages while ignoring the throughput requirements, which may lead to serious traffic accidents due to the loss of information. In light of this, we investigate the performance of cooperative awareness messages (CAMs) delivery via NR sidelink under different CC configurations, including the modulation and coding scheme, the semi-persistent scheduling-based resource allocation, as well as the CAM transmission period. Specifically, taking into account these configurations, we develop a theoretical framework to capture two metrics of CAM delivery, namely the effective throughput and the channel busy ratio, based on the stochastic geometry approach. With the help of this framework, we propose the CC-(m,n,[Formula Omitted]) scheme, which is able to optimize the two metrics simultaneously by properly tuning the parameters m, n, and [Formula Omitted]. Extensive numerical results show that the proposed scheme is highly beneficial for efficient and reliable CAM delivery via NR sidelink, particularly in scenarios with high vehicle densities. |
| Author | Kong, Jun Wang, Jiadai Fu, Qiang Liu, Jiajia |
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| SubjectTerms | 3GPP Automation Configurations Congestion control (CC) effective throughput Encoding Interference Internet of Things Long Term Evolution Measurement Messages modulation and coding scheme (MCS) new radio (NR) sidelink Optimization Resource allocation Resource scheduling Roads semi-persistent scheduling (SPS) Sidelink Throughput Traffic accidents Tuning Vehicle-to-everything |
| Title | Toward Throughput Optimization: A Congestion Control Scheme for CAM Delivery via NR Sidelink |
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