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

• 作 者: Jianghong SHI Chen LIU Xuemin HONG Cheng-Xiang WANG
• 机 构: Key Laboratory of Underwater Acoustic Communication and Marine Information Technology,Ministry of Ed
• 出 处: Science China(Information Sciences)
• 发表日期: 2017年10期
• 关键词: machine type communication coexistence resource allocation priority queue delay

The support for mission critical machine-type-communication(c MTC) services is indispensable for the 5th generation(5G) mobile communication systems. As the c MTC and(part of) the conventional humantype-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 c MTC and HTC traffic share a limited amount of radio resource. Considering a largescale 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 c MTC 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 c MTC service, at a cost of slightly degraded MTC and HTC service capacities.

The support for mission critical machine-type-communication (c MTC) services is indispensable for the 5th generation (5G) mobile communication systems. As the c MTC and (part of) the conventional humantype-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 c MTC and HTC traffic share a limited amount of radio resource. Considering a largescale 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 c MTC 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 d ivision scheme can significantly improve the delay performance of c MTC service, at a cost of slightly degraded MTC and HTC service capacities.