Performance Analysis of an unslotted CSMA scheme based on SU’s priority in heterogeneous cognitive Wireless Networks
Dongxue Zhao, Dongbi Zhu · Journal of Physics Conference Series · 2019
The spectrum access scheme for secondary users(SUs) in heterogeneous cognitive wireless networks environment was studied. We propose a carrier sense multiple access (CSMA) scheme based on SU's priority in heterogeneous networks environment and analyze the system performance by queueing analytic method. The numerical results show that performance of our proposed scheme is better than the schemes without considering SU's priority.