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Cover Story

Initial Cellular V2X standard completed

September 26, 2016

By Dino Flore, 3GPP RAN Chairman 

As part of the expansion of the LTE platform to new services, and to keep track with the increasing needs of the automotive industry, 3GPP is developing functionality to provide enhancements specifically for vehicular communications - both in terms of direct communication (between vehicles, vehicle to pedestrian and vehicle to infrastructure) and for cellular communications with networks.

The initial Cellular Vehicle-to-Everything (V2X) standard, for inclusion in the Release 14, was completed last week - during the 3GPP RAN meeting in New Orleans. It focuses on Vehicle-to-Vehicle (V2V) communications, with further enhancements to support additional V2X operational scenarios to follow, in Release 14, targeting completion during March 2017.

The 3GPP Work Item Description can be found in RP-161894.

Overview of the completed features

V2V communications are based on D2D communications defined as part of ProSe services in Release 12 and Release 13 of the specification. As part of ProSe services, a new D2D interface (designated as PC5, also known as sidelink at the physical layer) was introduced and now as part of the V2V WI it has been enhanced for vehicular use cases, specifically addressing high speed (up to 250Kph) and high density (thousands of nodes).

To that end, a few fundamental modifications to PC5 have been introduced.

Recent News

3GPP drives GSM-R to a new track

August 5, 2016

By Juergen Merkel, Nokia, rapporteur of the FS_FRMCS study item.

At the recent 3GPP SA plenary, a study item was approved - to investigate the requirements for a new railway communication system, as a successor to the GSM-R service.

GSM-R is facing a number of challenges:

  • The system life-cycle is coming to an end, with vendor support uncertain beyond 2030
  • Extra capacity is required in some areas to support railway operations
  • The rollout of European Rail Traffic Management System (ERTMS) has increased the strain on the GSM-R network

To have a successor technology in place by 2020 for trials and by 2022 for deployment, the International Railway Union (UIC) have published a user requirement specification in their paper “Future Railway Mobile Communication System - FRMCS” (see S1-161250).


LAA standardization: coexistence is the key

July 13, 2016

Given that the topic of LAA is generating a lot of interest, our RAN Chairman has provided the following update on the development of the standard, with a particular focus on the work on coexistence in unlicensed spectrum.

By Dino Flore, 3GPP TSG RAN Chairman

More than a year ago 3GPP decided to embark in the specification of Licensed-Assisted Access (LAA) to provide operators and consumers with an additional mechanism to utilize unlicensed spectrum for improved user experience, while coexisting with other Wi-Fi and other technologies in the 5GHz unlicensed band.

Prior to any specification work on LAA, 3GPP conducted studies to look at the feasibility of LTE operating in unlicensed bands. A central focus of the studies was fair sharing and coexistence with Wi-Fi where the criterion used to ensure coexistence was that an LAA network does not impact existing Wi-Fi neighbors any more than another Wi-Fi network.


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