| ELECTRICAL ENGINEERING |
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Resource optimization for D2D communications based on statistical QoS provisioning |
| MI Xiang, ZHAO Ming, XU Xibin, WANG Jing |
| Tsinghua National Laboratory for Information Science and Technology, State Key Laboratory on Microwave and Digital Communications, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China |
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Abstract Device-to-device (D2D) communications are a key technology in fifth generation (5G) cellular networks. Resource allocation is critical to the D2D communication performance and is a key research topic. This study considers D2D communications in orthogonal frequency division multiple access (OFDMA) based cellular networks where the user delay requirements are characterized by the statistical quality-of-service (QoS) provisioning. An effective resource allocation scheme is given to maximize the QoS-guaranteed system throughput while guaranteeing the interference threshold requirements of the cellular users. The original optimization problem is solved using the Lagrange approach with algorithms based on an alternating optimization method and a successive convex approximation method. Simulations show that the resource allocation scheme significantly improves the system performance.
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| Keywords
wireless communication
device-to-device (D2D) communications
resource allocation
power control
statistical quality-of-service (QoS) provisioning
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Issue Date: 15 December 2017
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2017,
Vol. 57
