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Coexistence of delay-sensitive MTC/HTC traffic in large scale networks


The support for mission critical machine-type-communication (cMTC) services is indispensable for the 5th generation (5G) mobile communication systems. As the cMTC and (part of) the conventional human-type-communication (HTC) services are broadband and delay-sensitive services, how to ensure their coexistence is a new and challenging problem. This paper investigates the problem of service-level resource allocation, which decides how cMTC and HTC traffic share a limited amount of radio resource. Considering a large-scale network, we put forth a system model that integrates queuing models and stochastic geometric models to characterize the delay performance in self-interfering scenarios. A service-level resource allocation scheme called load division is proposed. The delay and throughput performance of cMTC and HTC are derived under different resource allocation schemes and priority scheduling policies. We show that compared with the baseline scheme of frequency division, the proposed load division scheme can significantly improve the delay performance of cMTC service, at a cost of slightly degraded MTC and HTC service capacities.

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This work was supported by National Natural Science Foundation of China (Grant No. 61571378), EU H2020 RISE TESTBED Project (Grant No. 734325), EU FP7 QUICK Project (Grant No. PIRSES-GA-2013-612652), and EPSRC TOUCAN Project (Grant No. EP/L020009/1).

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Correspondence to Xuemin Hong.

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Shi, J., Liu, C., Hong, X. et al. Coexistence of delay-sensitive MTC/HTC traffic in large scale networks. Sci. China Inf. Sci. 60, 100302 (2017).

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  • machine type communication
  • coexistence
  • resource allocation
  • priority queue
  • delay sensitive