How does a Transport block (TB) containing both URLLC and eMBB data is handled?
Suppose we have a ongoing eMBB data flow going which is coded in such a way that maximum data can be sent but suddenly a URLLC data comes which needs to be coded in different rate to ensure reliability. How does a Transport Block containing both types of data is handled in 5G or gNB
Thanks and Regards,
Pratik Sharma
Ultra-reliable low-latency communication ( uRLLC ) and enhanced mobile broadband ( eMBB ) are two influential services of the emerging 5G cellular network. Latency and reliability are major concerns for uRLLC applications, whereas eMBB services claim for the maximum data rates. Owing to the trade-off among latency, reliability and spectral efficiency, sharing of radio resources between eMBB and uRLLC services, heads to a challenging scheduling dilemma. In this paper, we study the co-scheduling problem of eMBB and uRLLC traffic based upon the puncturing technique. Precisely, we formulate an optimization problem aiming to maximize the minimum expected achieved rate ( MEAR ) of eMBB user equipment (UE) while fulfilling the provisions of the uRLLC traffic. We decompose the original problem into two sub-problems, namely scheduling problem of eMBB UEs and uRLLC UEs while prevailing objective unchanged. Radio resources are scheduled among the eMBB UEs on a time slot basis, whereas it is handled for uRLLC UEs on a mini-slot basis. Moreover, for resolving the scheduling issue of eMBB UEs, we use penalty successive upper bound minimization ( PSUM ) based algorithm, whereas the optimal transportation model ( TM ) is adopted for solving the same problem of uRLLC UEs. Furthermore, a heuristic algorithm is also provided to solve the first sub-problem with lower complexity. Finally, the significance of the proposed approach over other baseline approaches is established through numerical analysis in terms of the MEAR and fairness scores of the eMBB UEs.
For details check this link:-Coexistence Mechanism Between eMBB and uRLLC in 5G Wireless Networks | IEEE Journals & Magazine | IEEE Xplore