摘要
为了满足车联网中不同应用的服务质量(Quality of Service,QoS)要求,提出了一种基于网络切片技术的车联网频谱资源分配方案。该方案考虑数据接入控制,通过联合优化频谱资源块(Resource Block,RB)分配和车辆信号发射功率控制,在安全服务切片低时延高可靠性的约束下,最大化信息娱乐服务切片的平均和吞吐量。将车联网资源管理建模为一个混合整数随机优化问题,利用李雅普诺夫(Lyapunov)优化理论将该优化问题分解为接入控制和RB分配与功率控制两个子问题,并分别对其进行求解,得到每个时隙的接入控制和资源分配方案。仿真结果表明,所提出的资源分配方案能够有效提高信息娱乐服务切片的平均和吞吐量,并且可以通过调整引入的控制参数值来实现吞吐量和时延的动态平衡。同时,与已有方案相比,该方案具有更好的时延性能。
To satisfy the quality of service(QoS)requirements of different applications in the Internet of Vehicles(IoV),a spectrum resource allocation scheme of IoV based on the network slicing technology is proposed.Considering the traffic admission control,the average total throughput of the infotainment service slice is maximized under the constraints of low-latency and high reliability of the security service slice.Moreover,the spectrum resource block(RB)allocation and transmit power control are jointly optimized,while ensuring the transmission rate of the infotainment service slice.The resource management of IoV is modeled as a mixed integer stochastic optimization problem,which is reduced into a simpler one with the help of Lyapunov optimization theory.Then,the simplified optimization problem is equivalently decomposed into two sub-problems corresponding to traffic admission control and RB and transmit power allocation,respectively.The resource allocation scheme of each time slot is obtained by solving these two sub-problems.The simulation results demonstrate that the proposed resource allocation scheme can effectively improve the average total throughput of the infotainment service slice,and can strike a dynamic balance between delay and throughput by tuning the introduced control parameter.Besides,compared with the existing schemes,the proposed scheme shows superior latency performance.
作者
李悦
任春莉
章国安
LI Yue;REN Chunli;ZHANG Guoan(School of Information Science and Technology,Nantong University,Nantong 226019,China)
出处
《电讯技术》
北大核心
2023年第1期85-92,共8页
Telecommunication Engineering
基金
国家自然科学基金资助项目(61971245)
江苏省研究生科研与实践创新计划项目(KYCX20_2827)。
关键词
车联网(IoV)
网络切片
资源分配
接入控制
功率控制
Internet of Vehicles(IoV)
network slicing
resource allocation
traffic admission control
power control
