Multi-radio coexistence and collaboration on an SDR platform

摘要

In order to support the simultaneous use of both legacy and new radios in a multi-radio handset, a Software Defined Radio (SDR) platform needs to offer coexistence mechanisms and services for radios. This paper proposes an SDR control framework to provide the coexistence services and common interfaces for them. The multi-radio control in proposed platform is divided into two parts, the light-weight dynamic scheduling with tight real-time constraints to solve the temporal interoperability issues between radios, and the semi-dynamic admission control to perform the resource allocation when a radio changes its behavioral pattern. The control framework was implemented on a SDR technology demonstrator, to show how multiple simultaneously active radios are controlled, and how the coexistence mechanism can be used to provide tangible benefits to the SDR modem user, like the ability to utilize fine-grained spectral holes.