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A new code compression method for FOTA | IEEE Journals & Magazine | IEEE Xplore

A new code compression method for FOTA


Abstract:

This paper presents a new compression method for compressed Firmware-over-the-air (FOTA) that reconstructs a new compressed version from an old compressed version of firm...Show More

Abstract:

This paper presents a new compression method for compressed Firmware-over-the-air (FOTA) that reconstructs a new compressed version from an old compressed version of firmware stored in NAND flash memory. The compressed FOTA requires a small delta that minimizes the amount of update data and an efficient compression method that provides fast encoding and decoding to achieve fast updating and extraction. A fast dictionarybased compression algorithm for the program code is introduced. With a high compression ratio, our method provides relatively fast encoding and very fast decoding. We demonstrate that the compression time during the update process can be reduced by utilizing the copy information stored in the delta without increasing the size of the delta. We present some experimental results to show the impact of this method in terms of the compression ratio, extraction time and updating time1.
Published in: IEEE Transactions on Consumer Electronics ( Volume: 56, Issue: 4, November 2010)
Page(s): 2350 - 2354
Date of Publication: 30 November 2010

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