FlexRay 동적 메시지 처리 구간의 프레임 전송 성능 분석
An Analysis of Frame Transmission Performance in FlexRay Dynamic Segment
- 주제(키워드) FlexRay , 성능 분석 , In-vehicle Network
- 발행기관 아주대학교
- 지도교수 박기진
- 발행년도 2009
- 학위수여년월 2009. 8
- 학위명 석사
- 학과 및 전공 일반대학원 산업공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000010033
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Since the safety and multimedia-related functions of automobile are getting increased and complex, In-vehicle network has become important. Even though FlexRay has emerged as the de-facto standard for In-vehicle network protocol, the message delay analysis problem has not been solved yet. In this thesis, we propose the probabilistic delay model of message transmission in the FlexRay dynamic segment considering the variable length of messages that share identical Frame Identifier (ID). Based on the model, we derive frame delay probability and empty minislot distribution as performance metrics, which can be used during the design phase of a FlexRay network, and also calculate transmission probabilities of additional message with new Frame ID for different lengths of it using the empty minislot probability. Finally, as model evaluation, we carry out simulation experiments with message sets that are randomly generated. Trough the experiments, we verify the models, and show that previous model only considering fixed frame length causes pessimistic delay probability compared to the proposed model. Empty minislot distribution and frame transmission probability is also analyzed for different value of system parameters of FlexRay. The delay model proposed is helpful for FlexRay system designer to determine system parameter or set frame information in DYN segment.
more목차
Abstract 1
Contents 2
I. Introduction 6
A. Research Motivation and Objective 6
B. Organization of Dissertation 10
II. Related Works 11
III. FlexRay Communication Cycle 14
IV. The System Architecture 17
V. Probabilistic Delay Analysis of Dynamic Message Transmission 22
A. Frame Delay Probability 22
B. Empty Minislot Distribution 23
VI. Performance Evaluation 26
A. Introduction 26
B. Frame Delay Probability 28
C. Empty Minislot Distribution and Frame Transmission Probability 33
VII. Conclustions 36
Bibliography 38
