Metrology for 5G link adaptation and signal-to-interference-plus-noise ratio

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F21%3AN0000027" target="_blank" >RIV/00177016:_____/21:N0000027 - isvavai.cz</a>

Výsledek na webu

<a href="https://digital-library.theiet.org/content/books/10.1049/pbte099e_ch2" target="_blank" >https://digital-library.theiet.org/content/books/10.1049/pbte099e_ch2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1049/PBTE099E_ch2" target="_blank" >10.1049/PBTE099E_ch2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Metrology for 5G link adaptation and signal-to-interference-plus-noise ratio

Popis výsledku v původním jazyce

Before a mobile terminal device transmits uplink data to or receives downlink data from the base station it has established a connection with, the quality of this connection/channel needs to be quantified, usually via the channel quality indicator (CQI). This is reported to the base station by the mobile terminal and it will determine the rate at which data can be transmitted as well as the type of modulation scheme that should be used. This will inherently depend on how high the signal-to-interference-plus-noise ratio (SINR) is at the mobile terminal such that a higher SINR will result in a higher CQI. Prior to the roll out of fifth-generation (5G) wireless mobile networks, the CQI was determined by the mobile terminal. In 5G systems, on the other hand, where massive multiple input–multiple output (mMIMO) is used, the link adaptation is not an individual user problem anymore but a multi-user one (based on all the users within a cell served by a given base station), which relies upon the need for each mobile terminal to reliably evaluate its SINR and report back a correct corresponding CQI to the base station.

Název v anglickém jazyce

Metrology for 5G link adaptation and signal-to-interference-plus-noise ratio

Popis výsledku anglicky

Before a mobile terminal device transmits uplink data to or receives downlink data from the base station it has established a connection with, the quality of this connection/channel needs to be quantified, usually via the channel quality indicator (CQI). This is reported to the base station by the mobile terminal and it will determine the rate at which data can be transmitted as well as the type of modulation scheme that should be used. This will inherently depend on how high the signal-to-interference-plus-noise ratio (SINR) is at the mobile terminal such that a higher SINR will result in a higher CQI. Prior to the roll out of fifth-generation (5G) wireless mobile networks, the CQI was determined by the mobile terminal. In 5G systems, on the other hand, where massive multiple input–multiple output (mMIMO) is used, the link adaptation is not an individual user problem anymore but a multi-user one (based on all the users within a cell served by a given base station), which relies upon the need for each mobile terminal to reliably evaluate its SINR and report back a correct corresponding CQI to the base station.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

20202 - Communication engineering and systems

Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Metrology for 5G and Emerging Wireless Technologies

ISBN

978-1-83953-278-8

Počet stran výsledku

21

Strana od-do

29-50

Počet stran knihy

766

Název nakladatele

—

Místo vydání

United Kingdom

Kód UT WoS kapitoly

—