In addition, a more heuristic scheme, TSA with flexible modulation (TSA-FM), which considers the trade-off of overhead caused by the increase in traffic burst number and the bandwidth loss caused by the degradation of modulation level, is provided to further improve the utilization of radio resources.
Adopting the proposed approach enables better utilization of radio resources, since more resources may be assigned to BE users, while maintaining the same QoS level for RT users.
Cognitive radio aims to improve the utilization of radio electromagnetic spectrum, which is scarce but often underutilized [1].
Since mobile radio resources are valuable assets and scarcely available, it is required to ensure efficient utilization of radio resources for M2M communications.
Moreover, unexpected delay, increased packet loss, high power consumption, and inefficient utilization of radio resources will occur.
In the future, there will be a growing need for more flexible but efficient utilization of radio resources.
In this paper, the influence of traffic burst allocation was studied, and a novel cross-layer design to improve the utilization of radio resource was proposed.
L. Bao and S. Liao's paper addresses the spectrum scarcity problem caused by the unbalanced utilization of radio frequency bands in the current state of wireless spectrum allocations.
This inefficient and under-utilization of radio spectrum has diverted the attentions of the researchers towards the different techniques in order to access the spectrum dynamically and adaptively.
Generally, radio resource management aims at optimizing the utilization of various radio resources such that the performance of the radio system is improved.
With the objective of obtaining a more efficient utilization of the radio spectrum, in a cognitive radio network, the unlicensed users (also referred to as secondary users) may communicate using frequencies of the licensed spectrum [1 4].
