Pricing-based resource allocation with security requirements for OFDM networks in real-time electricity market

In this paper, we propose a pricing-based cross-layer scheduling and energy management for secure data transmission in orthogonal frequency division multiplexing (OFDM) wireless networks. We try to investigate how to maximize the expected profit while ensuring the least electricity cost in the context of smart grids. To decrease the electricity cost, the base station is equipped with energy storage, such as uninterrupted power supply (UPS). Based on the time-varying power price, the UPS is charged and discharged at low and high power price, respectively. A pricing scheme is also proposed for the wireless operator to charge downlink user with security demand. The prominence of our proposed scheduling design is that it can be easily implemented without any statistic knowledge of electricity pricing. Theoretical analysis shows that the proposed scheme can achieve a near-optimal performance and that its effectiveness and robustness is also validated through simulation results.