Date Added: Sep 2010
The security threat posed by malware in mobile wireless networks can be countered through immunization using security patches. The distribution of patches however consumes bandwidth which is specially scarce in wireless networks, and must therefore be judiciously controlled in order to attain desired trade-offs between security risks and resource consumption. The desired tradeoffs can be attained by activating at any given time only fractions of dispatchers and selecting their packet transmission rates. The authors formulate the above trade-offs as optimal control problems that seek to minimize the aggregate network costs that depend on security risks and resource consumed by the countermeasures.