Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

    • MCV QoE Mouth To Ear Latency Measurement Data

    Metadata Updated: August 20, 2022

    Mouth-to-ear (M2E) latency describes the time it takes speech input in a voice communication transmit device to be output from a receiving device, and has been identified as a key component of quality of experience (QoE) in communications. NIST's PSCR division developed a method to measure and quantify the M2E latency of any communications system transmitting audio, with specific emphasis on push to talk (PTT) devices. This measurement method is the first step in establishing QoE key performance indicators (KPI) for mission critical voice (MCV) and a measurement system to quantify these QoE KPIs. Additional measurement methods will be established and published in the near future. The measurement system provides a fair platform for the comparisons of M2E latency across radio communications technologies. Both single and two location measurement systems were developed. The single location measurement system is a simpler setup ideal for measurements performed in a single, controlled setting. The two location system allows for the measurement of M2E latency between devices in two distinct locations and adds the capability to see potential effects of distance and signal propagation on the latency a user experiences. Example measurements of the M2E latency of VHF and UHF land mobile radios (LMR) operating in both direct mode and in trunked mode were performed. These tests demonstrated that both the single and two location tests return consistent measurement results.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    References

    https://doi.org/10.6028/NIST.IR.8206

    Dates

    Metadata Created Date March 11, 2021
    Metadata Updated Date August 20, 2022

    Metadata Source

    Harvested from NIST

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 11, 2021
    Metadata Updated Date August 20, 2022
    Publisher National Institute of Standards and Technology
    Maintainer
    Identifier 5AA696C0E091D243E0531A570681AF2C1865
    Language en
    Data Last Modified 2018-01-01 00:00:00
    Category Advanced Communications:Wireless (RF), Public Safety:Public safety communications research, Public Safety:First responder preparedness
    Public Access Level public
    Bureau Code 006:55
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 571738a2-32b4-4016-9051-5b573f358681
    Harvest Source Id 74e175d9-66b3-4323-ac98-e2a90eeb93c0
    Harvest Source Title NIST
    Homepage URL https://data.nist.gov/od/id/5AA696C0E091D243E0531A570681AF2C1865
    License https://www.nist.gov/open/license
    Program Code 006:045
    Related Documents https://doi.org/10.6028/NIST.IR.8206
    Source Datajson Identifier True
    Source Hash f2fd5c84ccfcbb6077f5144f4c8c883e27430b27
    Source Schema Version 1.1

    Didn't find what you're looking for? Suggest a dataset here.