Energy efficient cross layer time synchronisation in cognitive radio networks
by S.M. Usman Hashmi; Muntazir Hussain; S.M. Nashit Arshad; Kashif Inayat; Seong Oun Hwang
International Journal of Internet Technology and Secured Transactions (IJITST), Vol. 11, No. 4, 2021

Abstract: Time synchronisation is a vital concern for any cognitive radio network (CRN) to perform dynamic spectrum management. Each cognitive radio (CR) node has to be environment-aware and self-adaptive and must have the ability to switch between multiple modulation schemes and frequencies. Achieving same notion of time within these CR nodes is essential to fulfil the requirements for simultaneous quiet periods for spectrum sensing. Current application layer time synchronisation protocols require multiple timestamp exchanges to estimate skew between the clocks of CRN nodes. The proposed symbol timing recovery method already estimates the skew of hardware clock at the physical layer and uses it for skew correction of application layer clock of each node. The heart of application layer clock is the hardware clock and hence application layer clock skew will be same as of physical layer and can be corrected from symbol timing recovery process, so one timestamp is enough to synchronise two CRN nodes. This conserves the energy utilised by application layer protocol and makes a CRN energy efficient and can achieve time synchronisation in short span.

Online publication date: Sun, 01-Aug-2021

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Internet Technology and Secured Transactions (IJITST):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com