Survey on spectrum sharing/allocation for cognitive radio networks Internet of Things

Many IoT applications have been developed recently, this leads to increasing the network load. To avoid the lack of spectrum, IoT can use cognitive radio network concept. This paper presents most of the researches addressing channel allocation and packets scheduling, when merging the cognitive radio networks with the IoT technology. Surveying the researches done in this area shows the work done is still in its early stage, and needs a lot of developments and investigations. (C) 2020 Production and hosting by Elsevier B.V. on behalf of Faculty of Computers and Artificial Intelligence, Cairo University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).