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Improving congestion control algorithm for safety messages in vehicular communication environments

Improving congestion control algorithm for safety messages in vehicular communication environments

Material type
학위논문
Personal Author
양승남 梁承南
Title Statement
Improving congestion control algorithm for safety messages in vehicular communication environments / Seungnam Yang
Publication, Distribution, etc
Seoul :   Graduate School, Korea University,   2016  
Physical Medium
viii, 118장 : 도표 ; 26 cm
기타형태 저록
Improving Congestion Control Algorithm for Safety Messages in Vehicular Communication Environments   (DCOLL211009)000000068884  
학위논문주기
학위논문(박사)-- 고려대학교 대학원: 컴퓨터·전파통신공학과, 2016. 8
학과코드
0510   6YD36   311  
General Note
지도교수: 金孝坤  
부록: A. Cooperative ITS (C-ITS) standards,  
Bibliography, Etc. Note
참고문헌: 장 90-97
이용가능한 다른형태자료
PDF 파일로도 이용가능;   Requires PDF file reader(application/pdf)  
비통제주제어
V2X , Congestion control , ETSI , DCC,,
000 00000nam c2200205 c 4500
001 000045881649
005 20160926172503
007 ta
008 160704s2016 ulkd bmAC 000c eng
040 ▼a 211009 ▼c 211009 ▼d 211009
041 0 ▼a eng ▼b kor
085 0 ▼a 0510 ▼2 KDCP
090 ▼a 0510 ▼b 6YD36 ▼c 311
100 1 ▼a 양승남 ▼g 梁承南
245 1 0 ▼a Improving congestion control algorithm for safety messages in vehicular communication environments / ▼d Seungnam Yang
260 ▼a Seoul : ▼b Graduate School, Korea University, ▼c 2016
300 ▼a viii, 118장 : ▼b 도표 ; ▼c 26 cm
500 ▼a 지도교수: 金孝坤
500 ▼a 부록: A. Cooperative ITS (C-ITS) standards,
502 1 ▼a 학위논문(박사)-- ▼b 고려대학교 대학원: ▼c 컴퓨터·전파통신공학과, ▼d 2016. 8
504 ▼a 참고문헌: 장 90-97
530 ▼a PDF 파일로도 이용가능; ▼c Requires PDF file reader(application/pdf)
653 ▼a V2X ▼a Congestion control ▼a ETSI ▼a DCC
776 0 ▼t Improving Congestion Control Algorithm for Safety Messages in Vehicular Communication Environments ▼w (DCOLL211009)000000068884
900 1 0 ▼a Yang, Seung-nam, ▼e
900 1 0 ▼a 김효곤 ▼g 金孝坤, ▼e 지도교수
945 ▼a KLPA

Electronic Information

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Improving congestion control algorithm for safety messages in vehicular communication environments (27회 열람)
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Holdings Information

No. Location Call Number Accession No. Availability Due Date Make a Reservation Service
No. 1 Location Science & Engineering Library/Stacks(Thesis)/ Call Number 0510 6YD36 311 Accession No. 123054365 Availability Available Due Date Make a Reservation Service B M

Contents information

Abstract

  V2X communication enables the delivery of information messages from a vehicle to any entity that may affect the vehicle, and vice versa. The messages exchanged among neighboring vehicles are the foundation of crash avoidance in future driving environments. Moving vehicles continually broadcast their position, heading, acceleration, steering angle, and vehicle size, among other data, so that neighboring vehicles may track and predict each others’ positions, thereby reducing the chance of a collision. One difficulty in the reliable delivery of the messages, however, is channel congestion, which occurs when the wireless channel capacity allocated for the beacon exchange is exceeded due to dense vehicular traffic. 
    In the European Telecommunication Standards Institute (ETSI) framework, the vehicle-to-vehicle (V2V) and the vehicle-to-roadside (V2R) communications on the 5 GHz frequency band must use the decentralized congestion control (DCC) algorithm standardized by the ETSI. The DCC algorithm distinguishes itself from other methods in that it simultaneously regulates default four parameters that all work to the identical effects. However, it has been claimed that this apparently reassuring feature is actually excessive and can lead DCC to perform sub-optimally. We show that by the simplified DCC algorithm to use a single control parameter, the DCC framework can obtain comparable performance with state of the art algorithms whether adaptive DCC algorithm or reactive DCC algorithm. Also, this dissertation explores how two algorithms, DCC from Europe and Error Model Based Adaptive Rate Control for Vehicle-to-Vehicle Communication (EMBARC) from the United States fare against each other in a mixed vehicular network, and reveals that DCC has a serious fairness problem in face of EMBARC, and shows the simplified DCC algorithm gets better performance than DCC algorithm to improve fairness. 

Table of Contents

Contents
  Abstract	i
  List of Tables	vi
  List of Figures	vii
1. Introduction	1
2. Background	5
    2.1 Decentralized Congestion Control (DCC)	6
         2.1.1 ETSI DCC architecture	7
         2.1.2 ETSI DCC mechanism	10
    2.2 Joint rate-power control algorithm	14
         2.2.1 Transmission rate control	14
         2.2.2 Transmission power control	16
    2.3 LIMERIC	18
         2.3.1 Channel capacity	18
         2.3.2 Rate control	19
    2.4 PULSAR	20
         2.4.1 Channel load assessment	20
         2.4.2 Rate adaptation	21
         2.4.3 Information sharing	23
    2.5 EMBARC	24
         2.5.1 STE component	25
         2.5.2 Transmission scheduling mechanism	27
3. Improving ETSI DCC algorithm with an adaptive approach	31
    3.1 Introduction	31
    3.2 Simple adaptive DCC algorithm	33
    3.3 Evaluation	36
         3.3.1 PDR and number of received messages	37
         3.3.2 Inter-message gap	40
    3.4 Summary	41
4. Improving ETSI DCC algorithm with a reactive approach	42
    4.1 Introduction	42
    4.2 Simple reactive DCC algorithm 	44
         4.2.1 Description of DCC	44
         4.2.2 Simplifying DCC in reactive control frameworks	45
    4.3 Experiments	48
         4.3.1 Inter-packet gap and tracking error	51
         4.3.2 Stability and fairness	60
    4.4 Summary	63
5. Coexistence performance of DCC and EMBARC	64
    5.1 Introduction	64
    5.2 DCC and EMBARC	67
         5.2.1 Decentralized Congestion Control (DCC)	67
         5.2.2 Error Model Based Adaptive Rate Control (EMBARC)	69
    5.3 Comparative performance evaluation	70
         5.3.1 Configurations	71
         5.3.2 Results	72
         5.3.3 Coexistence performance evaluation of simplifying DCC               and EMBARC	80
    5.4 Summary	87
6. Conclusion 	88
Bibliography	90
Appendix A Cooperative ITS (C-ITS) standards	98
    A.1 Overview of C-ITS standards 	98
    A.2 C-ITS Access Layer standards	103
    A.3 C-ITS Networking and Transport Layer standards	106
    A.4 C-ITS Facilities Layer standards	109
    A.5 C-ITS Application Layer standards	114
Summary (in Korean)	117

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