Transceivers as a Resource: Scheduling Time and Bandwidth in Software-Defined Radio

IEEE Access

卷:8

Nathan D. Price¹  Maciej J. Zawodniok¹  Ivan G. Guardiola² 

[1] Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO, USA;

[2] School of Business Administration, Fort Lewis College, Durango, CO, USA;

关键词: Communication systems;    resource management;    scheduling algorithms;    software radio;    wireless communication;   

DOI  :  10.1109/ACCESS.2020.3011051

来源: DOAJ

【 摘 要 】

In the future, software-defined radio may enable a mobile device to support multiple wireless protocols implemented as software applications. These applications, often referred to as waveform applications, could be added, updated, or removed from a software-radio device to meet changing demands. Current software-defined radio solutions grant an active waveform exclusive ownership of a specific transceiver or analog front-end. Since a wireless device has a limited number of front-ends, this approach puts a hard constraint on the number of concurrent waveform applications a device can support. A growing trend in software-defined radio research is to virtualize front-ends to allow sharing and reuse among active waveform applications. This poses a difficult scheduling challenge. This article proposes a new approach in which shared access to front-ends is managed by a mixed-integer linear programming model. This model ties together the technique of time-division sharing and front-end bandwidth channelization. This scheduling model is evaluated in simulation under several different scenarios and workloads. Simulation results show that the proposed approach reduces hardware contention and missed radio accesses compared to existing techniques.

【 授权许可】

Unknown