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Mobility management method and system for intelligent transportation system

An intelligent transportation system and management method technology, applied in wireless communication, electrical components, etc., can solve problems such as difficult end-user service transmission, and achieve the effect of overcoming instability, meeting QoS requirements, and reliable service transmission

Active Publication Date: 2021-01-05
BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high-speed mobility of the terminal, the reliability of the wireless link and the connectionless nature of the IP protocol itself, it is difficult to provide reliable service transmission for the terminal user in the vehicle-road communication system based on IEEE 802.11P

Method used

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  • Mobility management method and system for intelligent transportation system
  • Mobility management method and system for intelligent transportation system
  • Mobility management method and system for intelligent transportation system

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Embodiment Construction

[0020] In view of the deficiencies in the existing intelligent transportation communication system, the present invention proposes a new intelligent transportation communication system based on scheduling, its network architecture and protocol plane are as follows figure 1 with figure 2 shown.

[0021] The structure of intelligent transportation access network is as follows: figure 1 shown. The access network takes the roadside unit (RSU), the fiber access network and the access controller (AC) as the core. RSU and AC data exchange interface is fast Ethernet interface (100 / 1000Mbps). The Adapter is used to adapt the transmission protocol between the RSU and AC and the optical fiber access network. The AC controller is connected to the remote ITS core network through the Modem. The technical solution provided by the present invention can realize a fast and smooth mobility management mechanism between RSUs, thereby ensuring reliable service transmission during terminal move...

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Abstract

The invention discloses a mobility management method used for an intelligent traffic system. The mobility management method comprises the step of cell reselection: cell reselection is triggered by monitoring the channel quality measurement values of a serving cell and neighboring cells under the idle mode; and the steps of air interface switching: the switching program includes channel measurement, switching trigging, switching judgment and switching preparation and switching performance. The invention also provides a mobility management system used for the intelligent traffic system. According to the technical scheme, a fast and smooth mobility management mechanism between RSU can be realized so as to guarantee reliable service transmission in the terminal mobile process, adapt to the high speed mobility of the terminal, overcome the instability of wireless links and meet the QoS demands of upper services.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a mobility management for an intelligent transportation system. Background technique [0002] Aiming at the high-speed mobile environment of automobiles, IEEE has specially formulated a standard for in-vehicle wireless communication, namely 802.11p. 802.11p is based on 802.11a, so it is essentially an extension and extension of 802.11. That is, the MAC layer still adopts a mechanism based on CSMA / CA. As the number of terminals increases, competition and collision overhead will greatly reduce system throughput. Due to the high-speed mobility of the terminal, the reliability of the wireless link, and the connectionless nature of the IP protocol itself, it is difficult to provide reliable service transmission for the terminal user in the vehicle-road communication system based on IEEE 802.11P. [0003] In view of this, it is necessary to propose an intelligent t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/30H04W36/32H04W36/18
CPCH04W36/18H04W36/30H04W36/32
Inventor 姚惠娟刘慎发鲍东山
Owner BEIJING NUFRONT MOBILE MULTIMEDIA TECH