Joint Power and Channel Allocation to Minimize Age of Information in Wireless Networks with Time-Varying Channels and Power Constraints

In this paper, we consider the scenario where the base station (BS) transmits time-sensitive information to various users via shared orthogonal sub-channels. The BS allocates sub-channels and power to different users to complete the data transmission task in each time slot. The metric Age of Informa...

Full description

Saved in:
Bibliographic Details
Published inIEEE Vehicular Technology Conference pp. 01 - 07
Main Authors Chen, Guozhi, Chen, Yuchao, Wang, Jintao, Song, Jian
Format Conference Proceeding
LanguageEnglish
Published IEEE 24.06.2024
Subjects
Age of Information
Information age
Lyapunov optimization
Optimization methods
Power allocation
Power demand
Scheduling
Simulation
Time-varying channels
Vehicular and wireless technologies
Wireless networks
Online AccessGet full text

Cover

More Information
Summary:In this paper, we consider the scenario where the base station (BS) transmits time-sensitive information to various users via shared orthogonal sub-channels. The BS allocates sub-channels and power to different users to complete the data transmission task in each time slot. The metric Age of Information (AoI) is adopted to measure the timeliness of information. We jointly optimize the transmitting decisions, the sub-channel assignments, and the power allocation schemes to minimize the average AoI of the users subject to the average and peak power constraints. We propose a dynamic scheduling policy based on the Lyapunov optimization method and then prove that the proposed policy can satisfy the power constraints and achieve a near-optimal AoI performance. Numerical simulations indicate that the proposed policy is stable and satisfies the power constraints, which validates the theoretical analysis.
ISSN:2577-2465
DOI:10.1109/VTC2024-Spring62846.2024.10683197