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

content


Editorial Technical report to help system designers and frequency coordinators

Editorial Technical report to help system designers and frequency coordinators

Have you heard that there are two new technologies moving into the 800MHz public safety radio frequency bands? One is frequency-division multiple access
  • Written by Urgent Communications Administrator
  • 1st July 1996

Have you heard that there are two new technologies moving into the 800MHz public safety radio frequency bands? One is frequency-division multiple access (FDMA), and the other is time-division multiple access (TDMA). A way of looking at it is that one uses several narrowband digital channels, and the other uses one wideband digital channel, in a given bandwidth.

The Associated Public-Safety Communications Officials (APCO), which serves as a trade association and a frequency coordinating company for public safety agencies, has been working in conjunction with the Telecommunications Industry Association (TIA) to develop a public safety digital radio standard. As it became apparent that more than one type of digital radio system would be occupying public safety frequencies, TIA began to develop methods to assist in the frequency assignment, design and operation of both types of system so that each one could avoid interfering with the reception of the other.

Spectrum refarming Then, along came spectrum refarming for the private land mobile radio frequencies below 512MHz, affecting both public safety and non-public safety systems. Spectrum refarming means revised regulations that modify existing technical standards and operating conditions. The idea is to make it possible for increasing numbers of transmitters to be used without creating too much interference. The result is going to be a mixture of modulation technologies and bandwidths on frequencies that used to be occupied on 25kHz or 30kHz channel centers by frequency-modulated (FM) radio. What once was fairly simple now becomes quite complex.

The Industrial Telecommunications Association, among other trade associations and frequency coordinating companies, realized that new guidelines would be required to assign frequencies among various narrowband and wideband digital and analog facilities. When ITA started talking with TIA about such guidelines, TIA’s years of experience in working on the public safety digital radio standard were applied and expanded in helping to create a blueprint for coordinating frequencies in the spectrum refarming environment.

Joint TIA-IEEE project Working together with the Institute of Electrical and Electronics Engineers’ (IEEE) Vehicular Technology Society (VTS) propagation committee, among other participants, the TIA’s working group on technology compatibility (designated WG 8.8) set about to create a document that frequency coordinators, system designers and manufacturers could use to place new radio communications systems within the radio spectrum and within geographic areas for the best results. Actually, the document will serve as a basis for writing computer software to automate the processing of license applications using system specifications and terrain data in ways that pre-computer methods could not.

Are you ready for the name of the document? “A Report on Technology-independent Methodology for the Modeling, Simulation and Empirical Verification of Wireless Communications System Performance in Noise- and Interference-limited Systems Operating on Frequencies Between 30 and 1,500 MHz.” Whew. “For decades, the wireless industry has been in need of an objective, accurate means of assuring wireless systems are properly designed, tested and validated,” said Gregory M. Stone, Ph.D. E.E., a co-chairman of WG 8.8 and chairman of the IEEE VTS propagation committee. “In addition, there has been a critical need for a fair and objective empirical method of resolving interference disputes. The efforts of the TIA and IEEE have appeared to pay off with the newly released report.”

Reactions ITA seems to be pleased with the document. “It will lead to better use of the spectrum compared to previous engineering methods,” said Sharpe Smith, ITA manager of communications and public affairs. “We support the development of these guidelines. We not only support, but we have proactively attempted to bring the process into the refarming realm. We’re not just giving it lip service, we’re showing up at the meetings, and we’re providing input. We think it important to the success of the post-refarming environment to have these guidelines.”

APCO’s executive director Ronnie Rand said that although it appears that some of the document may be complex for frequency advisers, “It appears to be a useful document. We view it as something that can be helpful in the coordination process. It is obvious that the people who worked on it took their task very seriously.” Rand also said that the suggestion that perhaps the FCC should publish the document and ask for public comment has been discussed.

Stone said that the joint TIA-IEEE effort enjoyed widespread land mobile industry and user community support. In addition to contributions made by APCO and ITA, he cited Ericsson, Motorola and the U.S. Immigration and Naturalization Service (INS). An acknowledgment published in the report says that the genesis of the document is the brainchild of Carl B. “Bernie” Olson, director of resource development engineering for Motorola’s National Engineering Services. It credits the following with substantive contributions: Harry Anderson, Ph.D., EDX Engineering; Dominic Acuri, Ericsson; John Oblak, E.F. Johnson; Brad Hiben, Tom Rubinstein, Casey Hill and Al Wieczorek, Motorola; and Judith F. Furie, INS. The INS provided additional staff and resources to produce the document.

Results Congress and the FCC pass their laws and regulations. Manufacturers create their equipment specifications. Operators for proposed communications systems design their facilities. Frequency coordination companies recommend or select radio channel assignments. Along the way, engineers and technicians have the responsibility to make communications systems function within the framework created by regulation, frequency coordination and available equipment.

We hope the TIA document will result in software development, frequency coordination procedures and regulatory policies that will help spectrum refarming to provide the improved services and expansion of the number of users that are expected. Our congratulations to the participants who drafted the document. –Don Bishop

Tags: content

Most Recent


  • Editorial Technical report to help system designers and frequency coordinators
    Newscan: Securing the Internet of Things is quite a challenge
    Also: EWA requests dismissal of 900 MHz applications; TIA names tech and policy priorities for 2014; IJIS Institute names Shumate Award winner; App makes bus waits more tolerable; a Blackberry comeback may be in the offing.
  • Editorial Technical report to help system designers and frequency coordinators
    Newscan: FCC certifies Carlson Wireless's white-space radio
    Also: Congress looks to revamp telecom law; Obama to place some restraints on surveillance; IEEE to study spectrum-occupancy sensing for white-spaces broadband; Major Swedish transport operator opts for Sepura TETRA radios; RFMD to partner on $70 million next-generation power grid project; NENA opens registratiuon for "911 Goes to Washington."
  • Editorial Technical report to help system designers and frequency coordinators
    Newscan: A look at the critical job of 911 dispatchers
    Also: NYC launches website for tracking 911 response times; Oregon implements 911 on pre-paid cell phones; LightSquared wants to keep spectrum assets; Harris receives multiple government orders; FCC extends rebanding financial reconciliation deadline; Zetron gear at core of communications system upgrade; Ritron debuts wireless access control system; EWA seeks policy review of VHF vehicular repeater system deployments.
  • Editorial Technical report to help system designers and frequency coordinators
    Newscan: Average peak data rates of 144 MB/s average realized in tests with CAT 4 LTE device
    Also: Verizon, T-Mobile to swap unused spectrum to improve coverage; Internet giants oppose surveillance--but only when the government does it; FCC Chairman says incentive auction will be delayed until middle of 2015; FCC chair announces staff appointments; Alcatel-Lucent names Tim Krause as chief marketing officer; New Jersey county deploys TriTech CAD system; Toronto airport deploys 26-position Zetron console system;

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

  • RugGear: Contributing to the future of mission-critical broadband communication review and market vision
  • Photo gallery: 2014 Communications Marketing Conference (CMC) in Tucson
  • Editorial Technical report to help system designers and frequency coordinators
    Top 5 Stories - Week of Sept. 22
  • Editorial Technical report to help system designers and frequency coordinators
    RCA plans to expand this year's Technical Symposium

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

Newscan: Japanese carrier outage lasts multiple days dlvr.it/STS9JJ

6th July 2022
UrgentComm

Criminals use deepfake videos to interview for remote work dlvr.it/STRjZM

6th July 2022
UrgentComm

Tesla recalls 59,000 vehicles over emergency-call software glitch dlvr.it/STRcgT

6th July 2022
UrgentComm

Report: Reforming emergency dispatch won’t be easy, but it’s necessary dlvr.it/STRYNP

6th July 2022
UrgentComm

FCC clears SpaceX to connect Starlink to boats, planes, other moving vehicles dlvr.it/STRXGB

6th July 2022
UrgentComm

Judge orders Hytera to make large royalty payment this month to Motorola Solutions dlvr.it/STRRQc

6th July 2022
UrgentComm

Sesame Solar leverages mobile solar, hydrogen to power efforts beyond the grid dlvr.it/ST8m3K

1st July 2022
UrgentComm

Newscan: On front lines, communications breakdowns prove costly for Ukraine dlvr.it/ST7fnC

30th June 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