  Future wireless networks are convinced to provide flexible and cost-efficient
services via exploiting network slicing techniques. However, it is challenging
to configure network slicing systems for bursty ultra-reliable and low latency
communications (URLLC) service provision due to its stringent requirements on
low packet blocking probability and low codeword error decoding probability. In
this paper, we propose to orchestrate network resources for a network slicing
system to guarantee a more reliable bursty URLLC service provision. We re-cut
physical resource blocks (PRBs) and derive the minimum upper bound of bandwidth
for URLLC transmission with a low packet blocking probability. We correlate
coordinated multipoint (CoMP) beamforming with channel uses and derive the
minimum upper bound of channel uses for URLLC transmission with a low codeword
error decoding probability. Considering the agreement on converging diverse
services onto shared infrastructures, we further investigate the network
slicing for URLLC and enhanced mobile broadband (eMBB) service multiplexing.
Particularly, we formulate the service multiplexing as an optimization problem
to maximize the long-term total slice utility. The mitigation of this problem
is challenging due to the requirements of future channel information and
tackling a two timescale issue. To address the challenges, we develop a joint
resource optimization algorithm based on a sample average approximate (SAA)
technique and a distributed optimization method with provable performance
guarantees.
