https://urgentcomm.com/wp-content/themes/ucm_child/assets/images/logo/footer-new-logo.png
  • Home
  • News
  • Multimedia
    • Back
    • Multimedia
    • Video
    • Podcasts
    • Galleries
  • Commentary
    • Back
    • Commentary
    • Urgent Matters
    • View From The Top
    • All Things IWCE
    • Legal Matters
  • Resources
    • Back
    • Resources
    • Webinars
    • White Papers
    • Reprints & Reuse
  • IWCE
    • Back
    • IWCE
    • Conference
    • Special Events
    • Exhibitor Listings
    • Premier Partners
    • Floor Plan
    • Exhibiting Information
    • Register for IWCE
  • About Us
    • Back
    • About Us
    • Contact Us
    • Advertise
    • Terms of Service
    • Privacy Statement
    • Cookies Policy
  • Related Sites
    • Back
    • American City & County
    • IWCE
    • Light Reading
    • IOT World Today
    • Mission Critical Technologies
    • Microwave/RF
    • T&D World
    • TU-Auto
  • In the field
    • Back
    • In the field
    • Broadband Push-to-X
    • Internet of Things
    • Project 25
    • Public-Safety Broadband/FirstNet
    • Virtual/Augmented Reality
    • Land Mobile Radio
    • Long Term Evolution (LTE)
    • Applications
    • Drones/Robots
    • IoT/Smart X
    • Software
    • Subscriber Devices
    • Video
  • Call Center/Command
    • Back
    • Call Center/Command
    • Artificial Intelligence
    • NG911
    • Alerting Systems
    • Analytics
    • Dispatch/Call-taking
    • Incident Command/Situational Awareness
    • Tracking, Monitoring & Control
  • Network Tech
    • Back
    • Network Tech
    • Interoperability
    • LMR 100
    • LMR 200
    • Backhaul
    • Deployables
    • Power
    • Tower & Site
    • Wireless Networks
    • Coverage/Interference
    • Security
    • System Design
    • System Installation
    • System Operation
    • Test & Measurement
  • Operations
    • Back
    • Operations
    • Critical Infrastructure
    • Enterprise
    • Federal Government/Military
    • Public Safety
    • State & Local Government
    • Training
  • Regulations
    • Back
    • Regulations
    • Narrowbanding
    • T-Band
    • Rebanding
    • TV White Spaces
    • None
    • Funding
    • Policy
    • Regional Coordination
    • Standards
  • Organizations
    • Back
    • Organizations
    • AASHTO
    • APCO
    • DHS
    • DMR Association
    • ETA
    • EWA
    • FCC
    • IWCE
    • NASEMSO
    • NATE
    • NXDN Forum
    • NENA
    • NIST/PSCR
    • NPSTC
    • NTIA/FirstNet
    • P25 TIG
    • TETRA + CCA
    • UTC
Urgent Communications
  • NEWSLETTER
  • Home
  • News
  • Multimedia
    • Back
    • Video
    • Podcasts
    • Omdia Crit Comms Circle Podcast
    • Galleries
    • IWCE’s Video Showcase
  • Commentary
    • Back
    • All Things IWCE
    • Urgent Matters
    • View From The Top
    • Legal Matters
  • Resources
    • Back
    • Webinars
    • White Papers
    • Reprints & Reuse
    • UC eZines
    • Sponsored content
  • IWCE
    • Back
    • Conference
    • Why Attend
    • Exhibitor Listing
    • Floor Plan
    • Exhibiting Information
    • Join the Event Mailing List
  • About Us
    • Back
    • About Us
    • Contact Us
    • Advertise
    • Terms of Service
    • Privacy Statement
    • Cookies Policy
  • Related Sites
    • Back
    • American City & County
    • IWCE
    • Light Reading
    • IOT World Today
    • TU-Auto
  • newsletter
  • In the field
    • Back
    • Internet of Things
    • Broadband Push-to-X
    • Project 25
    • Public-Safety Broadband/FirstNet
    • Virtual/Augmented Reality
    • Land Mobile Radio
    • Long Term Evolution (LTE)
    • Applications
    • Drones/Robots
    • IoT/Smart X
    • Software
    • Subscriber Devices
    • Video
  • Call Center/Command
    • Back
    • Artificial Intelligence
    • NG911
    • Alerting Systems
    • Analytics
    • Dispatch/Call-taking
    • Incident Command/Situational Awareness
    • Tracking, Monitoring & Control
  • Network Tech
    • Back
    • Cybersecurity
    • Interoperability
    • LMR 100
    • LMR 200
    • Backhaul
    • Deployables
    • Power
    • Tower & Site
    • Wireless Networks
    • Coverage/Interference
    • Security
    • System Design
    • System Installation
    • System Operation
    • Test & Measurement
  • Operations
    • Back
    • Critical Infrastructure
    • Enterprise
    • Federal Government/Military
    • Public Safety
    • State & Local Government
    • Training
  • Regulations
    • Back
    • Narrowbanding
    • T-Band
    • Rebanding
    • TV White Spaces
    • None
    • Funding
    • Policy
    • Regional Coordination
    • Standards
  • Organizations
    • Back
    • AASHTO
    • APCO
    • DHS
    • DMR Association
    • ETA
    • EWA
    • FCC
    • IWCE
    • NASEMSO
    • NATE
    • NXDN Forum
    • NENA
    • NIST/PSCR
    • NPSTC
    • NTIA/FirstNet
    • P25 TIG
    • TETRA + CCA
    • UTC
acc.com

Broadband Push-to-X


News

LTE ProSe direct-mode communications works with limited range, Samsung official says

LTE ProSe direct-mode communications works with limited range, Samsung official says

  • Written by Donny Jackson
  • 2nd September 2020

Proximity Services (ProSe)—an LTE standard for direct-mode communications when network connectivity is not available—works today, but its range is limited to “maybe half a mile” because of the low power levels of LTE devices, according to a Samsung official.

“ProSe is already available today,” Timothy Paul, senior sales manager for Samsung Electronics America, said during an IWCE 2020 Virtual session webcast last week. “[But] It’s not launched, or it’s not fully tested.

“I will say that ProSe is at the early stages. There have to be a lot of developments as we go along to handle off-net kind of solutions.”

On March 31, AT&T announced FirstNet PTT, the first push-to-talk-over-cellular (PoC) offering based on the mission-critical-push-to-talk (MCPTT) standard developed by 3GPP. Those who have used FirstNet PTT when connected to the FirstNet system have applauded its audio quality and low-latency performance, which many have judged as being superior to push-to-talk communications on LMR networks used by public-safety agencies.

But most LTE devices do not support communications when they are not connected to a broadband network, typically an LTE or Wi-Fi system. ProSe was created to address this communications gap, so LTE users could communicate directly to each other, without the need for a network connection—the kind of direct-mode communications supported by LMR devices.

Although the ProSe standard was established more than four years ago, most vendors did not make chipsets supporting the functionality. A notable exception is Samsung, which developed a working ProSe chipset years ago for use in South Korea but historically declined to discuss its performance—until Paul spoke at the IWCE session last week.

“It [ProSe] works today, but the range depends on the surroundings and what kind of building situations you are in,” Paul said.

“The range of ProSe … I would not say that it’s ready. I mean, it’s maybe half a mile. But if you’re in a building or you’re in a dense situation, you know that gets significantly reduced, right? It’s not a high-power device, so those aspects need to be considered.”

Indeed, the physics associated with ProSe on a typical LTE device has long been a concern within public safety, which often needs to communicate when users are outside of terrestrial network coverage.

LTE devices typically use only 0.200 watts to transmit signals with devices that usually have an internal antenna. By comparison, LMR portables feature an external antenna that supports signals being transmitted at much higher power levels of between 1 watt and 5 watts—in other words, four to 20 times the power levels of a typical LTE device—often on spectrum that provides better propagation characteristics than the airwaves used by commercial carriers.

Paul said that ProSe is being used operationally in South Korea. ProSe is not yet offered in the United States, although Samsung Galaxy XCover FieldPro—the rugged device that supports FirstNet PTT—includes a ProSe chipset that makes it technically capable of direct-mode communications, if allowed by a network operator.

From a functionality standpoint, LMR direct-mode communications supports only push-to-talk voice, while ProSe device-to-device communications enables not just voice (MCPTT) but also data (MCDATA) and video (MCVIDEO).

Paul also noted that ProSe currently supports only direct-mode communications where users are off network—have no network connection. Although the 3GPP standard envisions the possibility of “daisy-chain” users via ProSe to link to a network connection, that functionality is not yet available, he said.

“If you go into an area where there is no coverage, ProSe-enabled devices can detect who are the other devices nearby, and—if they are already provisioned—you can set up a group call amongst them,” Paul said. “That’s the capability that you will have today when it comes to ProSe.”

“It [ProSe] is strictly off-net—it is not network-assisted or transitory between network coverage and off-net coverage. It’s strictly off-net today.”

Public-safety representatives have focused on the lack of direct-mode communications as a primary reason why MCPTT should not be considered an alternative to LMR for push-to-talk voice communications. However, many MCPTT proponents have noted that the availability of LTE network coverage continues to increase, and myriad deployable solutions—from vehicle-deployed LTE systems to those that can carried in a Pelican case or backpack—are available, meaning users may not be off network very often.

This also could be true inside buildings and other facilities if public safety were able to leverage Wi-Fi systems automatically, because Samsung’s MCPTT works on Wi-Fi, Paul said.

“We have Wi-Fi support on MCPTT,” Paul said. “That helps a lot, because Wi-Fi is more universal [in buildings than LTE] and MCPTT can run over Wi-Fi. ProSe is an addition to it.”

 

Tags: homepage-featured-4 Applications Backhaul Broadband Push-to-X Companies Coverage/Interference Critical Infrastructure Deployables Enterprise Federal Government/Military In-Building Incident Command/Situational Awareness Long Term Evolution (LTE) News NTIA/FirstNet Public Safety Public-Safety Broadband/FirstNet Regional Coordination Standards State & Local Government Subscriber Devices System Design System Operation Test & Measurement Tower & Site Tracking, Monitoring & Control Video Wireless Networks News

Most Recent


  • FCC approves order to modernize priority-service rules
    FCC commissioners yesterday voted unanimously to approve a report and order that is designed to modernize and streamline the agency’s rules for three priority-service offerings: Wireless Priority Service (WPS), the Government Emergency Telecommunications Service (GETS) and the Telecommunications Service Priority (TSP) System. All three of these services—designed for use by national-security and emergency-preparedness personnel who […]
  • Florida P25 system slated for completion in 2024, will interoperate with FirstNet
    Florida’s efforts to transition its Statewide Law-Enforcement Radio System (SLERS) from legacy EDACS to P25 technology that is augmented by FirstNet broadband service is largely on schedule, with most public-safety users having P25 devices by July, according to an official with contractor L3Harris. Keith Gaston, the SLERS account manager for L3Harris, said that all of […]
  • More Verizon changes: price hikes, departure of biz CEO Erwin
    On the same day that Bloomberg reported on Verizon’s plans to increase prices, the CEO of the company’s business unit, Tami Erwin, announced her plans to leave the company by the end of the year. The developments reflect the difficulties Verizon has been facing amid growing competition in the wireless sector and inflation in the US economy. […]
  • Canada officially gives Huawei and ZTE the boot
    Despite his frothy name, François-Philippe Champagne did not bring any sparkle for Chinese vendors waiting to hear if they would be allowed to sell products in Canada. The Canadian minister of innovation, science and industry had only disappointing news for Huawei and ZTE earlier today. From now on, neither will be allowed to serve Canadian […]

Leave a comment Cancel reply

To leave a comment login with your Urgent Comms account:

Log in with your Urgent Comms account

Or alternatively provide your name, email address below:

Your email address will not be published. Required fields are marked *

Related Content

  • AT&T announces MCPTT-based FirstNet PTT, certifications for HPUE products from Assured Wireless
  • MCPTT-based FirstNet PTT a ‘game-changer,’ potential LMR replacement, N.J. police captain says
  • LTE ProSe direct-mode communications works with limited range, Samsung official says
    3GPP approves standard for mission-critical PTT (MCPTT) over LTE in Release 13
  • AT&T FirstNet highlights new EPTT features, future promise of MCPTT

Commentary


LTE and liability: Why the fire service must move forward with digital incident command

  • 2
6th May 2022

Partnership and collaboration must be the foundation for emergency communications

18th April 2022

FirstNet success means no hypothetical ‘shots’ need to be fired, Swenson says

22nd February 2022
view all

Events


UC Ezines


IWCE 2019 Wrap Up

13th May 2019
view all

Twitter


UrgentComm

FCC approves order to modernize priority-service rules dlvr.it/SQmSN0

20th May 2022
UrgentComm

Meet smart city goals cost-effectively dlvr.it/SQmPkr

20th May 2022
UrgentComm

Security for microwave links dlvr.it/SQmNwX

20th May 2022
UrgentComm

Florida P25 system slated for completion in 2024, will interoperate with FirstNet dlvr.it/SQm9cf

20th May 2022
UrgentComm

More Verizon changes: price hikes, departure of biz CEO Erwin dlvr.it/SQlWPT

20th May 2022
UrgentComm

Canada officially gives Huawei and ZTE the boot dlvr.it/SQlGht

20th May 2022
UrgentComm

MITRE creates framework for supply-chain security dlvr.it/SQlFjC

20th May 2022
UrgentComm

John Deere one step closer to fully autonomous farming dlvr.it/SQl7dv

20th May 2022

Newsletter

Sign up for UrgentComm’s newsletters to receive regular news and information updates about Communications and Technology.

Expert Commentary

Learn from experts about the latest technology in automation, machine-learning, big data and cybersecurity.

Business Media

Find the latest videos and media from the market leaders.

Media Kit and Advertising

Want to reach our digital and print audiences? Learn more here.

DISCOVER MORE FROM INFORMA TECH

  • American City & County
  • IWCE
  • Light Reading
  • IOT World Today
  • Mission Critical Technologies
  • Microwave/RF
  • T&D World
  • TU-Auto

WORKING WITH US

  • About Us
  • Contact Us
  • Events
  • Careers

FOLLOW Urgent Comms ON SOCIAL

  • Privacy
  • CCPA: “Do Not Sell My Data”
  • Cookies Policy
  • Terms
Copyright © 2022 Informa PLC. Informa PLC is registered in England and Wales with company number 8860726 whose registered and Head office is 5 Howick Place, London, SW1P 1WG.
This website uses cookies, including third party ones, to allow for analysis of how people use our website in order to improve your experience and our services. By continuing to use our website, you agree to the use of such cookies. Click here for more information on our Cookie Policy and Privacy Policy.
X