  In this paper, we consider the problem of admission control in 5G networks
where enhanced mobile broadband (eMBB) users and ultra-reliable low-latency
communication (URLLC) users are coexisting. URLLC users require low latency and
high reliability while eMBB users require high data rates. Thus, it is
essential to control the admission of eMBB users while giving priority to all
URLLC users in a network where both types of users are coexisting. Our aim is
to maximize the number of admitted eMBB users to the system with a guaranteed
data rate while allocating resources to all URLLC users. We formulated this as
an l_0 minimization problem. Since it is an NP-hard problem we have used
approximation methods and sequential convex programming to obtain a suboptimal
solution. Numerically we have shown that the proposed algorithm achieves
near-optimal performance. Our algorithm is able to maximize the number of
admitted eMBB users with an optimal allocation of resources while giving
priority to all URLLC users.
