Dg-budweiser-RiskaverseChoiceForTSN BMW-1021-v01.pptx - Read-Only
AN OVERVIEW ON A RISK-AVERSE INTRODUCTION OF TSN FEATURES IN AUTOMOTIVE NETWORKS
OCTOBER 12, 2021, ONLINE 802.1 TSN - P802.1DG CALL
October 12, 2021 K. Budweiser, BMW Group
AGENDA.
Introduction On Selected TSN Features Combination of TSN Features Best Practice Towards a Risk-Averse Introduction of TSN
K. Budweiser, BMW AG, 10.11.2020, 802.1 TSN - P802.1DG Call
page 2
OVERVIEW OF THE MOST FAMOUS TSN STANDARDS INTRODUCTION, DEFINITIONS AND FUNCTIONS.
The TSN Standards provide a tool-set that can be used to tackle various different problems.
Time synchronization
Frame replication & elimination
K. Budweiser, BMW AG, 10.11.2020, 802.1 TSN - P802.1DG Call
page 3
AGENDA.
OInntrSoedlueccttieodnTSN Features On Selected TSN Features Combination of TSN Features Best Practice Towards a Risk-Averse Introduction of TSN
K. Budweiser, BMW AG, 10.11.2020, 802.1 TSN - P802.1DG Call
page 4
BASIC OPERATION OF THE MOST FAMOUS FEATURES. TIME SYNCHRONIZATION.
Two messages: Sync- and FollowUp-message
pOT (preciseOriginTimestamp: Instance in time when the timegrandmaster sent a Sync-message
TASk-1
t1,(s)
corr (correctionTime): accounts for the elapsed time between pOT and forwarding the Sync-message
correctionTime calculation at TASk:
,() = ,() + ,() + , - ,
t1,(s+1)
Construction of reference time-tuple ,( ) and , at TASk+1:
,
,
()
,()
,
Synchronized time
at TASk+1 :
( )= , + - ,
t
K. Budweiser, BMW AG, 10.11.2020, 802.1 TSN - P802.1DG Call
TASk
T2,(s) T3,(s)
T2,(s+1) T3,(s+1)
T
TASk+1
pDelayk,(p)
residence time at TASk
4,(s)
pDelayk+1,(p)
pDelayk,(p+1)
residence time at TASk
4,(s+1)
pDelayk+1,(p+1)
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