https://urgentcomm.com/wp-content/themes/ucm_child/assets/images/logo/footer-new-logo.png
  • Home
  • News
  • Multimedia
    • Back
    • Multimedia
    • Video
    • Podcasts
    • Galleries
    • IWCE’s Video Showcase
    • Product Guides
  • 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
    • Cookie Policy
  • Related Sites
    • Back
    • American City & County
    • IWCE
    • Light Reading
    • IOT World Today
    • Mission Critical Technologies
    • 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
    • Product Guides
  • 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
    • Cookie Policy
    • Terms of Service
    • Privacy Statement
  • 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


  • AT&T becoming a “public-safety company” with FirstNet, NG911 work, exec says
    AT&T has long been one of the greatest consumer communications brands in the world, but the carrier is beginning to become “a public-safety company” through its first-responder-centric efforts in the development of FirstNet and next-generation 911 (NG911) networks, according to Scott Agnew, the new COO of AT&T’s FirstNet team. Two weeks ago, AT&T executives revealed […]
  • U.S. government plans to block all tech exports to Huawei–reports
    The Biden administration is weighing a plan to block the export of all US-sourced technologies to Huawei – the latest escalation in Washington’s years-long campaign to throttle the Chinese firm. The new bans, first reported by Financial Times (paywall applies), would likely fall most heavily on firms such as Intel and Qualcomm that sell Huawei server and […]
  • Command-injection bug in Cisco industrial gear opens devices to complete takeover
    A security vulnerability has been found in Cisco gear used in data centers, large enterprises, industrial factories, power plants, manufacturing centers, and smart city power grids that could allow cyberattackers unfettered access to these devices and broader networks. In a report published on Feb. 1, researchers from Trellix revealed the bug, one of two vulnerabilities discovered that […]
  • AR-based next-gen maps aim to rebalance detail and simplicity
    Every sat-nav user is familiar with the chagrin of missing their turn because the map’s lines and circles don’t resemble the real world. Yandex is blaming maps, not users, for these errors. At its annual conference in December, the company presented its re-designed maps boasting natural-looking 3D objects such as trees, bus stops, colored buildings, […]

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


How 5G is making cities safer, smarter, and more efficient

26th January 2023

3GPP moves Release 18 freeze date to March 2024

18th January 2023

Do smart cities make safer cities?

  • 1
6th January 2023
view all

Events


UC Ezines


IWCE 2019 Wrap Up

13th May 2019
view all

Twitter


UrgentComm

AT&T becoming a “public-safety company” with FirstNet, NG911 work, exec says dlvr.it/Sj8FXL

9th February 2023
UrgentComm

Command-injection bug in Cisco industrial gear opens devices to complete takeover dlvr.it/Sj6X3l

8th February 2023
UrgentComm

AR-based next-gen maps aim to rebalance detail and simplicity dlvr.it/Sj4gdM

7th February 2023
UrgentComm

Vodafone UK starts ‘risky’ shift to 5G standalone dlvr.it/Sj4dPJ

7th February 2023
UrgentComm

ChatGPT may be fastest-growing app of all time, UBS Says dlvr.it/Sj4NfL

7th February 2023
UrgentComm

Public-safety coalition renews efforts to secure federal NG911 funding dlvr.it/ShwGfn

4th February 2023
UrgentComm

Newscan: Cyberattacks on DoE national labs draw lawmaker scrutiny dlvr.it/Shvpw3

3rd February 2023
UrgentComm

The shine begins to wear off 5G private wireless dlvr.it/Shth0P

3rd February 2023

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
  • TU-Auto

WORKING WITH US

  • About Us
  • Contact Us
  • Events
  • Careers

FOLLOW Urgent Comms ON SOCIAL

  • Privacy
  • CCPA: “Do Not Sell My Data”
  • Cookie Policy
  • Terms
Copyright © 2023 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.