多网络控制器FC-AE-1553动态带宽调度机制

李心茹; 张馨月; 李铮; 何锋

doi:10.13700/j.bh.1001-5965.2022.0755

多网络控制器FC-AE-1553动态带宽调度机制

doi: 10.13700/j.bh.1001-5965.2022.0755

李心茹¹,
张馨月¹,
李铮^{2, 3},
何锋^1, ,

1.
北京航空航天大学电子信息工程学院，北京 100191
2.
中国科学院空天信息创新研究院，北京 100190
3.
中国科学院空间信息处理与应用系统技术重点实验室，北京 100190

基金项目: 国家自然科学基金 (62071023)

详细信息

通讯作者:
E-mail：robinleo@buaa.edu.cn

中图分类号: V243.1
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- 被引次数: 0
出版历程
- 收稿日期: 2022-09-02
- 录用日期: 2023-02-10
- 网络出版日期: 2023-03-13
- 整期出版日期: 2024-09-27

FC-AE-1553 dynamic bandwidth scheduling mechanism for multi network controllers

LI Xinru¹,
ZHANG Xinyue¹,
LI Zheng^{2, 3},
HE Feng^{1
, ,}

1.
School of Electronic Information Engineering，Beihang University，Beijing 100191，China
2.
Aerospace Information Research Institute，Chinese Academy of Sciences，Beijing 100190，China
3.
Key Laboratory of Technology in Geo-Spatial Information Processing and Application Systems，Chinese Academy of Sciences，Beijing 100190，China

Funds: National Natural Science Foundation of China (62071023)

More Information

Corresponding author: E-mail：robinleo@buaa.edu.cn

摘要

摘要:
由于航电系统通信需求的日趋复杂化，对基于FC-AE-1553组网的通信系统需要采用多网络控制器（NC）构建分布式网络环境，如何实施多个控制器之间的控制权分配，并解决跨域业务冲突的问题是其中的关键。为实现多NC协同调度，提出了一种主从NC协作的多NC动态带宽调度机制，采用并发通信方式提高网络带宽利用率，同时提升各类业务的传输保障能力。对于周期性业务采用固定时隙进行传输，对于强时效性突发业务采用抢占式带宽分配，对于一般突发业务按照“先跨域后域内”分别进行带宽分配。通过OMNeT++搭建FC-AE-1553网络仿真平台，结果表明：该调度机制可以满足多NC条件下不同类型通信业务的协同带宽分配和调度，对于周期性业务和强时效性突发业务，可以保障其实时性通信要求；对于一般突发业务，在网络负载不超过57%时也能为其提供合适的带宽进行传输。与单NC集中式相比，当网络负载大于0.5或跨域/域内业务比值大于0.8时，多NC控制具有较明显的时延优势。
- FC-AE-1553 /
- 多网络控制系统 /
- 动态调度 /
- 控制权分配 /
- 跨域传输
Abstract:
Due to the increasingly complex communication requirements of avionics system, the communication system based on FC-AE-1553 networking needs to use multiple network controllers (NC) to build a distributed network environment. The key lies in the distribution of control rights across various controllers and the resolution of cross-domain service conflicts. In order to realize multi NC collaborative scheduling, this paper proposes a multi NC dynamic bandwidth scheduling mechanism based on master-slave NC collaboration, which uses concurrent communication to improve network bandwidth utilization and enhance the transmission guarantee capability of various services. For periodic traffic, fixed time slots are used for transmission, for time constraint burst traffic, preemptive bandwidth allocation is used, and for common burst traffic, bandwidth allocation is based on "inter-domain and then intra-domain". The results indicate that the scheduling mechanism is capable of satisfying the collaborative bandwidth allocation and scheduling of various communication services in the presence of multiple network controllers. Furthermore, it can ensure the real-time usage remains below 57%. Multi-NC control offers a clear advantage in terms of latency compared to single NC centralized control, specifically when the network load exceeds 0.5 or the ratio of cross-domain/intra-domain services is higher than 0.8.
- FC-AE-1553 /
- multi network control system /
- dynamic scheduling /
- control rights allocation /
- cross-domain transmission

HTML全文

图 1 多级FC交换网络多NC架构

Figure 1. Multi-level FC switching network Multi-NC architecture

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图 2 跨域及域内业务冲突示意

Figure 2. Diagram of cross-domain and intra-domain service conflicts

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图 3 业务调度示意

Figure 3. Service scheduling diagram

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图 4 CBT带宽分配机制流程

Figure 4. CBT bandwidth scheduling mechanism flowchart

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图 5 业务调度机制

Figure 5. Service scheduling mechanism

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图 6 DBA周期与PT、TCBT业务

Figure 6. DBA period and PT, TCBT service

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图 7 DBA周期与CBT业务端到端时延

Figure 7. DBA period and CBT service end-to-end delay

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图 8 DBA周期与业务调度数量

Figure 8. DBA period and scheduled services number

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图 9 网络负载与CBT业务端到端时延

Figure 9. Network load and CBT service end-to-end delay

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图 10 网络负载与业务调度数量

Figure 10. Network load and scheduled services number

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图 11 跨域/域内业务比与PT、TCBT业务

Figure 11. Cross-domain/Intra-domain service ratio and PT, TCBT service

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图 12 跨域/域内业务比与CBT端到端时延

Figure 12. Cross-domain/Intra-domain service ratio and CBT service end-to-end delay

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表 1 业务类型及相关指标

Table 1. Service type and related metrics

业务类型	业务流方向	发送周期/ms	最大允许时延/ms	调度方式
PT	NC→NT（域内） NT→NC（域内）	1.5～10	1.5～10	固定时隙
CBT	NT→NT	突发	100	动态分配
TCBT	NC→NT（域内）	突发	0.05	抢占式

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