Priority‐aware intelligent device access management for carbon footprint monitoring in sustainable cites and society

Abstract

Carbon footprint monitoring provides significant basis for computing facilities to improve the computing efficiency and reduce the energy cost, which can enable low/zero carbon computing and facilitate the construction of sustainable cites. Massive sensing devices access to 5G base station to transmit collected carbon emission data, which requires intelligent access management. Fast uplink grant possesses the advantages of reducing signalling overhead and access conflicts while facing the problems of incomplete information and difficulty in guaranteeing priority constraint. This paper examines, the maximum access queuing delay minimization problem is formulated under the long-term service priority constraint and the short-term access management constraint. First, Lyapunov optimization is leveraged to decouple the long-term service priority constraint and short-term access management optimization, and decompose the long-term stochastic optimization problem into a series of short-term deterministic problems. Then, a priority-aware deep Q-network (DQN)-based fast uplink grant access management (PDAC) algorithm is proposed to achieve intelligent access management with differentiated service priority requirements. PDAC utilizes DQN to handle non-convex high-dimensional optimization problem with service priority constraint to achieve intelligent access management and priority awareness. Simulation results demonstrate that PDAC outperforms the existing algorithms in access queuing delay, buffer queue backlog, and priority deficit fluctuation.