Packets Transmitting Optimization in VANET V2V and 4G LTE Hybrid System

• Main Authors: CAI, RONG-CAN, 蔡榮燦
• Other Authors: WANG, CHU-FU
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/92848803345110555016

碩士 === 國立屏東大學 === 資訊科學系碩士班 === 104 === The Federal Government of the United States designated the frequency band of 5.9 GHz to 75 MHz to the dedicated short-range communication (DSRC) protocol in 1999, which enabling wireless transmission of VANET. The IEEE 802.11p transmission specifications were standardized in 2002, forming the prototype of VANETs. At present, mobile networks are mature communication networks while new regulations for VANETs have been scarce due to their transmission limitations. This has caused a considerable setback in the researches of VANET. To integrate the telecommunication networks (such as 4G LTE system) into the VANET environment is a promising approach to the limited bandwidth of VANETs. The transmitting of bandwidth-intensive multimedia streaming among vehicles will no longer being interrupted by connection failures. The considered environment of this thesis is a heterogeneous network that is interrogating by VANET V2V system and a 4G LTE system. A probability model was developed to estimate the effective bandwidth of the V2V system, and an estimate method was also proposed to estimate the effective bandwidth of the 4G LTE system. The findings were used to select the optimal transmission pathway based on between the two communication systems.