Dynamic QoS Mapping and Adaptive Semi-Persistent Scheduling in 5G-TSN Integrated Networks

The ubiquitous and deterministic communication systems are becoming indispensable for future vertical applications such as industrial automation systems and smart grids.5G-TSN(Time-Sensitive Networking)integrated networks with the 5G system(5GS)as a TSN bridge are promising to provide the required communication service.To guarantee the endto-end(E2E)QoS(Quality of Service)performance of traffic is a great challenge in 5G-TSN integrated networks.A dynamic QoS mapping method is proposed in this paper.It is based on the improved K-means clustering algorithm and the rough set theory(IKCRQM).The IKC-RQM designs a dynamic and loadaware QoS mapping algorithm to improve its flexibility.An adaptive semi-persistent scheduling(ASPS)mechanism is proposed to solve the challenging deterministic scheduling in 5GS.It includes two parts:one part is the persistent resource allocation for timesensitive flows,and the other part is the dynamic resource allocation based on the max-min fair share algorithm.Simulation results show that the proposed IKC-RQM algorithm achieves flexible and appropriate QoS mapping,and the ASPS performs corresponding resource allocations to guarantee the deterministic transmissions of time-sensitive flows in 5G-TSN integrated networks.

Scheme of Railway 5G Integrated Innovation Test Platform

An inevitable trend has already taken shape for the application of the 5th Generation Mobile Communication Technology(5G)in the railway sector.The application scenarios and business types of the railway sector are complex and diverse,so it is indispensable to test and verify the railway 5G before actual deployment.The design and creation of the railway 5G integrated innovation test platform provides engineering design,test and verification conditions for the networking,coverage and business development of 5G public networks and 5G-R in railway scenarios.This paper introduces the design of the overall architecture for the integrated railway 5G innovation test platform according to the railway network requirements,application scenarios and intelligent development trend;respectively elaborates on the design of the 5G-R core network,bearer network and wireless access along loop tracks,in combination with the characteristics of railway scenarios and the requirements of railway dispatching,operation and safety;raises further solutions on the network deployment and coverage schemes of 5G public networks so as to meet the application requirements of 5G public networks.The study results show that the integrated railway 5G innovation test platform scheme contains co-existence of 5G public and private networks,combines the indoor and outdoor scenarios,as well as takes into account of the dynamic and static tests so as to meet the environmental requirements for the integrated railway 5G test and application of all network functions,for which it can provide comprehensive technical support for railway 5G technology research and development,standard formulation,testing,etc.

Study on Security of 5G and Satellite Converged Communication Network

The 5G and satellite converged communication network(5G SCCN)is an impor⁃tant component of the integration of satellite-terrestrial networks,the national science,and technology major projects towards 2030.Security is the key to ensuring its operation,but at present,the research in this area has just started in our country.Based on the network char⁃acteristics and security risks,we propose the security architecture of the 5G SCCN and sys⁃tematically sort out the key protection technologies and improvement directions.In particu⁃lar,unique thinking on the security of lightweight data communication and design reference for the 5G SCCN network architecture is presented.It is expected to provide a piece of refer⁃ence for the follow-up 5G SCCN security technology research,standard evolution,and indus⁃trialization.

Architecture for Cellular Enabled Integrated Communication and Sensing Services

There is growing interest in the integrated sensing and communication(ISAC)to extend the 5G+/6G network capabilities by introducing sensing capability.While the solutions for mono-static or bi-static ISAC have shown feasibility and benefits based on existing 5G physical layer design,whether and how to coordinate multiple ISAC devices to better exert networking performance are rarely discussed.3 rd Partnership Project(3GPP)has initiated the ISAC use cases study,and the follow-up studies for network architecture could be anticipated.In this article,we focus on gNB-based sensing mode and propose ISAC functional framework with given of highlevel service procedures to enable cellular based ISAC services.In the proposed ISAC framework,three types of network functions for sensing service as Sensing Function(SF),lightweight-Edge Sensing Function(ESF)and full-version-ESF are designed with interaction with network nodes to fulfill the latency requirements of ISAC use cases.Finally,with simulation evaluations and hardware testbed results,we further verify the performance benefit and feasibility to enable ISAC in 5G for the gNB-based sensing mode with new design on SF and related signaling protocols.

基于5G的天空地一体化战术通信研究

现有战术通信主要依靠窄带通信技术实现,难以满足战场大量信息的分发需求。利用民用技术加速战术通信的发展已经取得业界的广泛认同,但是移动通信固有的特点使得这一进程非常缓慢。5G移动通信的提出为此提供了一次新的契机。初步探讨5G军用化的可行性,发现利用5G的关键技术并经过特殊设计可以消除/缓解传统移动通信军用化存在的一些障碍;并基于5G提出了一种天空地一体化战术通信网络,为战术通信的未来发展提供了一种新思路。

基于5G无线传感网络的智慧管廊综合监控系统设计

本文对基于5G无线传感网络的智慧管廊综合监控体系进行了简单的介绍,针对智慧管廊综合监控系统设计展开了深入的研究分析,结合本次研究,发表了一些自己的建议感想,希望可以对智慧管廊综合监控系统设计起到一定的参考和帮助,提高设计有效性,为智慧城市的发展建设打下良好的基础。

基于社会网络分析的长株潭“3+5”城市群经济网络结构研究

长株潭“3+5”城市群是湖南省经济上紧密联系、功能上分工合作的城市聚合体。为了更好地构建区域经济格局,更为全面而清晰地把握单个城市之间、单个城市在城市群中以及城市群整体网络的真实关系,运用社会网络分析法和城市引力模型,对长株潭“3+5”城市群的经济联系强度、网络密度、网络中心度、核心-边缘结构等指标进行定量化实证研究。研究结果表明:长株潭“3+5”城市群整体网络密度高,8个城市间经济联系非常紧密;网络中心度较高,城市群网络化结构明显;整个城市群处于非均衡发展状态,具有明显的核心-边缘结构特征;凝聚子群之间处于较弱连接状态。鉴于此,亟须进一步大力推进长株潭三市一体化建设、推动区域性中心城市建设。提高城市群内部主体关联度和建立良好的信息共享机制是优化长株潭“3+5”城市经济网络结构的有效途径。

变电站微机保护通信故障及处理

针对变电站综合自动化系统现场实际运行中微机保护装置与监控系统通信的常见故障:站控层网络通信中断、保护装置误发软报文、保护状态量采集故障、35kV断路器遥控成功率低进行了分析,提出了处理措施。总结归纳了故障发生的原因:设备老化和不同设备厂家的通信接口兼容性问题。主要介绍了变电站微机保护装置通信的故障解决方法,为正确处理综自系统的此类故障提供了借鉴。