基于OMNeT++的车载TSN通信仿真系统设计

doi:10.19562/j.chinasae.qcgc.2023.06.006

Abstract

Abstract:

The advancement of automotive technology requires networks to support a variety of communication requirements， such as reliability， real-time performance， low jitter， and strict delay limits. Time Sensitive Network （TSN） is a keyframe transmission delay guarantee solution based on IEEE 802 architecture of automotive Ethernet. In this paper， the TSN automotive Ethernet network simulation system is designed based on OMNeT++ to analyze the performance of various mechanisms of the TSN protocol in vehicle Ethernet application， including when used alone or in combination. At the same time， the performance of the vehicle application is evaluated by using the simulation system for the time-aware scheduling mechanism defined by IEEE 802.1Qbv. Finally， the automotive TSN network embedded platform is built to further verify the performance of time-aware scheduling and modify the network simulation model. The results show that the time-aware scheduling mechanism can not only guarantee the real-time performance of time-sensitive traffic， but also provide excellent transmission for other traffic classes.

Key words: automotive Ethernet, Time Sensitive Network, OMNeT++ network simulation, performance analysis

Bowen Wang,Feng Luo,Zitong Wang. Design of Automotive Time-Sensitive Network Communication Simulation System Based on OMNeT++[J].Automotive Engineering, 2023, 45(6): 954-964.

Figures/Tables 23

报文类型	延迟/μs
报文类型	1hop	2hop	3hop	4hop
控制	21.36	37.49	53.62	69.80
$Δ$ 控制		16.13	16.13	16.18
视频	133.436	165.754	198.072

报文类型	延迟/μs
报文类型	1hop	2hop	3hop	4hop
控制	21.54	36.31	51.28
$Δ$ 控制		14.77	14.97

References 18

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PCP	优先级	缩略词	流量类型
0	1	BK	背景（Background）
1	0（默认）	BE	尽力而为（Best Effort）
2	2	EE	卓越而为（Excellent Effort）
3	3	CA	关键应用（Critical Applications）
4	4	VI	视频（Video）
5	5	VO	音频（Voice）
6	6	IC	网间控制（Internetwork Control）
7	7	NC	网络控制（Network Control）

序号	流量优先级	发送节点	接收节点	发送周期/μs	发送数量	报文长度/B	实时性
1（控制流）	7	Video1	Audio	500	1	64	高
2（控制流）	7	Video2	Audio	500	1	64	高
3（控制流）	7	Audio	Video1	500	1	64	高
4（视频流）	4	Video1	PC	500	1	150	中
5（视频流）	4	Video2	PC	500	1	150	中
6（音频流）	5	Audio	PC	500	1	150	中
7（尽力而为）	0	BE	PC	250	1	1 000	低

调度区间/μs	队列0	队列1	队列2	队列3	队列4	队列5	队列6	队列7
90（控制报文）	关	关	关	关	关	关	关	开
150（AV报文）	关	关	关	关	开	开	关	关
130（BE报文）	关	开	关	关	关	关	关	关
130（保护带）	关	关	关	关	关	关	关	关

流量属性	发送节点	接收节点	交换机跳数	报文长度/B	延迟时间/μs
流量属性	发送节点	接收节点	交换机跳数	报文长度/B	最大值	最小值
控制报文	Video1	Audio	3	64	51.28	51.28
控制报文	Video2	Audio	2	64	36.31	36.31
控制报文	Audio	Video1	3	64	51.28	51.28
视频报文	Video1	PC	3	150	143.11	143.11
视频报文	Video2	PC	2	150	122.54	122.54
音频报文	Audio	PC	1	150	39.82	39.82
尽力而为报文	BE	PC	2	1 000	22 663	413.34

调度区间/μs	队列0	队列1	队列2	队列3	队列4	队列5	队列6	队列7
125（控制报文）	关	关	关	关	关	关	关	开
110（其他报文）	开	开	开	开	开	开	开	关
15（保护带）	关	关	关	关	关	关	关	关

Design of Automotive Time-Sensitive Network Communication Simulation System Based on OMNeT++

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References 18

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