Design and Simulation of Spectrum Access and
Power Management Protocol for Dynamic Access Networks
Ala'eddin A. Masadeh1, Haythem Bany
Salameh2,3, Ahmad Abu-El-Haija4
1Al-Balqa Applied University, Al-Salt, Jordan
2Al Ain University, Al Ain, UAE
3Yarmouk University, Irbid, Jordan
4Jordan University of Science and Tech., Irbid,
Jordan
Abstract: This work investigates the problem of
managing the transmission power and assigning channels for multi-channel single-radio
Cognitive Radio Ad-Hoc Networks (CRAHNs). The considered network consists of M
primary users and N secondary users, where the secondary users can use the
licensed channels opportunistically when they are not utilized by the primary
users. The secondary users have the capability of sensing the licensed channels
and determine their occupation status. They are also able to control their
transmission power such that the transmitted data can be received with high
quality-of-service with the lowest possible transmission power, and minimum
interference among the secondary users. This also contributes in increasing the
frequency spatial reuse of the licensed channels by the secondary users, when
the channels are unoccupied, which increases the network throughput. This work
proposes a channel assignment algorithm aims at assigning the unoccupied
licensed channels among secondary users efficiently, and a transmission power
control aims at tuning the transmission power used by the secondary users to
maximize the network throughput. The results show an enhancement achieved by
the proposed protocol when it is integrated to the considered network, which is
seen through increasing the network throughput and decreasing in the access
delay. In this context, the Network Simulator 2 (NS2) was used to verify our
proposed protocol, which indicates a significant enhancement in network
performance.
Keywords: Cognitive radio network, primary user,
secondary user, licensed spectrum, unlicensed spectrum, medium access control.
Received January 28, 2020;
accepted June 9, 2020
https://doi.org/10.34028/iajit/17/4A/2