In this paper, we investigate the power-efficient resource allocation strategy with Quality-of Service (QoS) provisioning in uplink ultra- reliable and low-latency communication (URLLC) networks. By adopting the finite-blocklength information theory, the QoS requirement is described for uplink URLLC transmissions. Then, we formulate an optimization problem concerning joint bandwidth assignment, subchannel allocation and transmit power control, which aims at minimizing the required total transmit power consumption with QoS provisioning. To solve this non-convex optimization problem, we design a traffic-aware resource allocation scheme, including the adaptive bandwidth assignment strategy based on the traffic load information and the joint subchannel allocation and transmit power control strategy based on nearest-neighbor searching. What's more, the impact of spatial diversity on the QoS provisioning and the power consumption are also analyzed. Simulation results demonstrate that our proposed resource allocation scheme can achieve better performance as compared to the conventional schemes.
Power-Efficient Uplink Resource Allocation for Ultra-Reliable and Low-Latency Communication
01.09.2019
203215 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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BASE | 2017
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