  Real-time applications are performance critical applications that require
bounded service latency. In multi-hop wireless ad-hoc and sensor networks,
communication delays are dominant over processing delays. Therefore, to enable
real-time applications in such networks, the communication latency must be
bounded. In this paper, we derive expressions of real-time capacity that
characterize the ability of a network to deliver data on time as well as
develop network protocols that achieve this capacity. Real-time capacity
expressions are obtained and analyzed for the earliest deadline first, deadline
monotonic. This paper presents a treatment of the real-time capacity limits.
The limits are derived for two extreme traffic topologies namely, the load
balanced topology and the convergecast (i.e., many-to-one) topology. It
considers DM and EDF scheduling algorithms, and discusses the implications of
the capacity limit expressions.
