Analysis of Various Software Reliability Models and Proposing a New Model of Software Reliability for Embedded Systems

Abstract

Software plays a major role in almost embedded  systems. The examples of such softwares are Life- saving systems  used in medical, mission critical systems used in missiles,  launching of any satellites etc. apart from the functional  complexities of available softwares, reliability of software with  embedded systems has become a serious concern. Various  techniques and methods are being formulated to predict or  estimate the quality of such embedded software system from its  structure in terms of quality and other parameters like  reliability, safety and performance. However, the results of these  quantitative structures for evaluation of reliability depend on  design-time estimates for a series of model parameters. To  overcome this problem, this paper presents a new design-time  architecture evaluation method that includes uncertainties of  various parameters. It first analyses some of available reliability  models and proposes a new software reliability model for  estimating, measuring and controlling software reliability of  embedded system where various different parameters need to be  estimated .