Recently major research is proceeding on various problems in dynamic spectrum access (DSA) in cognitive networks due to its growing use all over world. One of the problems is energy efficient bandwidth allocation or resource allocation in IEEE 802.22 cognitive LTE networks. In LTE architecture, allocation of network resources is done with end-users as well as evolved NodeBs (eNBs) by the spectrum manager (SM) using some optimal resource allocation strategy. For power efficiency, recent method presented in which transmission power and bandwidth assigned to downlink and uplink of LTE network with goal of minimizing total transmission power subject to constraints of capacity, queue stability and some other integer over bandwidth. In this method two variants of technique called Queue Based Control (QBC) are presented. These two variants are QBC version 1 and QBC version 2. Performance of QBC version 1 and QBC version 2 showing that QBC version 1 is having better Delay and Los performance as compared to QBC version 2, and QBC version 2 is having better power consumption performance as compared to QBC version 1. It means both this techniques are based on concepts of carrier aggregation of LTE networks. Both approaches showing that, they failed to address the tradeoff between power efficient and QoS efficiency. Therefore, for this research work, we are contributing new Improved QBC method to achieve the tradeoff between power efficiency and QoS efficiency. The proposed method is based on methodology of multilevel queues and dynamic network adaptation
