Cellular Internet of Vehicles C-V2X service flow control method

Abstract

The invention discloses a cellular Internet of Vehicles C-V2X service flow control method, and aims to solve the technical problem of relatively high network delay caused by the fact that traditional service flow control cannot adapt to a time-varying scene of Internet of Vehicles C-V2X service flow. The method comprises the following steps: converting an Internet of Vehicles service flow into a data packet queuing queue by using a pre-constructed service flow model, and obtaining a mapping relationship between a queue threshold of the Internet of Vehicles and an average queuing delay through queue analysis iteration; calculating the average queuing delay of the current time window according to the data packet queuing delay; on the basis of the mapping relation between the queue threshold and the average queuing delay, carrying out closed-loop feedback control according to the average queuing delay of the current time window and a preset Internet of Vehicles delay requirement, and adjusting the queue threshold of the next time window dynamically; and realizing Internet of Vehicles service flow control according to the queue threshold of the next time window. According to the invention, the network delay of various service flows in a C-V2X network scene can be effectively reduced.

Description

technical field [0001] The invention relates to a method for controlling a C-V2X service flow of cellular vehicle networking, and belongs to the technical field of wireless communication. Background technique [0002] With the development of wireless communication technology and network technology, network integration has gradually become a development trend in the communication field. In this era, the Internet of Vehicles has gradually developed into a heterogeneous vehicle network that integrates the three networks of the intra-vehicle network, the inter-vehicle network, and the vehicle ad hoc network. Users and vehicle terminals are located in various networks such as cellular networks and V2X direct-connection networks Under the heterogeneous network environment with common coverage, in addition, vehicle-mounted terminals carry various services including: driving safety, road condition broadcast, and streaming media. Facing the multi-service requirements under multi-net...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the traditional service flow control cannot adapt to the time-varying scenario of the C-V2X service flow in the Internet of Vehicles, resulting in high network delay, the present invention proposes a C-V2X service flow control method for the cellular Internet of Vehicles, based on multiple Markov modulation The superposition of the Bernoulli process (MMBP) is used to model the business flow of the Internet of Vehicles, and the relationship between the queue threshold and the average queuing delay in the business flow of the Internet of Vehicles is studied, and then the business flow control is realized by dynamically adjusting the queue threshold, which can effectively reduce the Network delay of various service flows in C-V2X network scenarios

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