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Vector OTA (Over the Air) Solution Vector无感刷写方案介绍
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2023-09-24
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Vector OTA (Over the Air) Solution Vector无感刷写方案介绍
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V | 2022-03-29
Vector OTA (Over the Air) Solution

3
© . Vector Automotive Technology (Shanghai) Co., Ltd. All rights reserved. Any distribution or copying is subject to prior written approval by Vector. V | 2022-03-29
u
Overview
Multi
-Partition Memory Concepts for Target ECU
Software Update with Classic MICROSAR and FBL
Option: ECU Multi
-Node Update
Summary
Agenda

4
© . Vector Automotive Technology (Shanghai) Co., Ltd. All rights reserved. Any distribution or copying is subject to prior written approval by Vector. V | 2022-03-29
Update in the Field: Download in Bootloader Context – Single Partition
Overview
Target ECUTarget ECU
Running Flash
Bootloader
Flash Memory
Connectivity Unit /
On-board Tester
Mass
Storage
UDS
Program software update
via Flash Bootloader
While driving
Safe state
Software Package
in OEM Backend

5
© . Vector Automotive Technology (Shanghai) Co., Ltd. All rights reserved. Any distribution or copying is subject to prior written approval by Vector. V | 2022-03-29
Update in the Field: Download in Bootloader Context – Multiple Partitions
Overview
Target ECU
Target ECU
Running Flash
Bootloader
Connectivity Unit /
On-board Tester
Mass
Storage
UDS
Program software update
via Flash Bootloader
While driving
Safe state
Software Package
in OEM Backend
Flash Memory
Active
Partition
Inactive
Partition

6
© . Vector Automotive Technology (Shanghai) Co., Ltd. All rights reserved. Any distribution or copying is subject to prior written approval by Vector. V | 2022-03-29
u Approach
u Software update is received by connectivity unit while driving down the road
u Update is applied on the target ECU in a post-run phase in the bootloader context
u Constraints
u Download interrupt/resume capability needs to be implemented in flash download process
u Battery capacity must be considered
u Pros
Re-use existing infrastructure (flash bootloader)
No impact on application runtime behavior, no safety concerns to be considered
Utilize maximum network bandwidth during update phase
u Cons
Limited time window during key-off for applying updates
Impact on post-run system design since normal message communication is switched off
Evaluation of Update in the Field: Download in Bootloader Context
Overview
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