416 ◾ Security for Multihop Wireless Networks
◾ Real time: Since the quantity of the devices in the M2M domain is very
large, the amount of the data transmitted in the network is massive. How to
analyze the massive received data and compute the security metrics quickly
is very challenging. Moreover, the ability of real-time response is also very
important because some applications of M2M communication may be life-
vital, for example, e-health.
◾ Self restore: e devices in an M2M domain are deployed in a very large
scope. So it is impractical to send people to repair the devices that being break
down under attack. Searching an approach that could make the device repair
itself intelligently is a promising direction in the future.
15.5 Conclu ...