Impact of timing on the Proximity Services (ProSe) synchronization function

Published

January 8, 2017

Author(s)

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

Abstract

Long Term Evolution Advanced (LTE-A) introduces a new feature called Proximity Services (ProSe), which enables device-to-device (D2D) communication between User Equipment (UE) and the capability to operate out-of-network. In order to establish a D2D communication link, the UEs need to be synchronized. In out-of-network scenarios, the synchronization is performed in a distributed manner by the UEs. In this paper, we study problems associated with the simultaneous execution of the synchronization procedure by LTE-A D2D-enabled UEs operating out-of-network. In particular, we focus on detection and convergence problems resulting from the half-duplex constraint and periodic scheduling. We show that if two transmitter UEs are acting as synchronization references and they perform the procedure too close in time, convergence to a synchronized state is not possible. Moreover, the periodic triggering of the procedure will make the problematic condition persistent in time. We propose an effective algorithm that prevent these problems, or resolve them in a reasonable time. We consider the protocol and requirements specified in the LTE-A standard, and we evaluate the performance of the proposed algorithm using system level simulations.

Proceedings Title

The 14th Annual IEEE Consumer Communications & Networking Conference

Conference Dates

January 8-11, 2017

Conference Location

Las Vegas, NV, US

Pub Type

Conferences

Download Paper

https://doi.org/10.1109/CCNC.2017.7983234

Local Download

Keywords

LTE, D2D, Synchronization, 3GPP, Proximity Services

Citation

Gamboa Quintiliani, S. , Cintron, F. , Griffith, D. and Rouil, R. (2017), Impact of timing on the Proximity Services (ProSe) synchronization function, The 14th Annual IEEE Consumer Communications & Networking Conference, Las Vegas, NV, US, [online], https://doi.org/10.1109/CCNC.2017.7983234, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=921509 (Accessed October 27, 2025)