Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Adaptive synchronization reference selection for out-of-coverage Proximity Services (ProSe)

Published

Author(s)

Samantha M. Gamboa Quintiliani, Fernando J. Cintron, David W. Griffith, Richard A. Rouil

Abstract

Proximity services (ProSe) is a Long Term Evolution Advanced (LTE-A) feature that allows User Equipments (UEs) to communicate without the need of routing the data throughout the network. In this paper, we studied the synchronization protocol used by ProSe-enabled UEs in out- of-coverage scenarios. In particular, we studied the triggering frequency of the distributed Synchronization Reference (SyncRef) selection algorithm used in these scenarios. We showed the disadvantage of using a periodic algorithm, and we developed an adaptive algorithm that triggers the process when suitable depending on the conditions of each UE. We evaluated the algorithm performance using our ns-3 ProSe implementation, and considering the protocol and requirements specified in the LTE-A standard. The results show that fast convergence time to a synchronized state can be achieved using the adaptive algorithm.
Proceedings Title
28th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
Conference Dates
October 8-13, 2017
Conference Location
Montreal, -1

Keywords

LTE, D2D, Synchronization, 3GPP, Proximity Services
Created October 8, 2017, Updated May 15, 2018