Title :
Onboard guarded software upgrading: motivation and framework
Author :
Tai, Ann T. ; Alkalai, Leon ; Chau, Savio N.
Author_Institution :
IA Tech. Inc., Los Angeles, CA, USA
Abstract :
The goal of the guarded software upgrading (GSU) framework is to minimize mission performance loss due to onboard software upgrading activities and that due to system failure caused by residual faults in an upgraded version. We exploit inherent system resource redundancies as the means of fault tolerance to meet the development cost and onboard resource constraints. Furthermore, we devise a message-driven confidence-driven protocol to facilitate effective and efficient error containment and recovery
Keywords :
aerospace computing; software fault tolerance; system recovery; development cost; error containment; fault tolerance; inherent system resource redundancies; message-driven confidence-driven protocol; mission performance loss; onboard guarded software upgrading; onboard resource constraint; recovery; residual faults; system failure; Costs; Error correction; Fault tolerant systems; Middleware; Performance loss; Protocols; Redundancy; Software performance; Space technology; Space vehicles;
Conference_Titel :
Aerospace Conference, 2001, IEEE Proceedings.
Conference_Location :
Big Sky, MT
Print_ISBN :
0-7803-6599-2
DOI :
10.1109/AERO.2001.931201
