Fresnel cheeb tsam yog dab tsi thiab CCQ (Client Connection Quality) los yog qhov tseem ceeb ntawm tus choj zoo tshaj plaws wireless

Txheem

CCQ - yog dab tsi?
Peb lub ntsiab tseem ceeb cuam tshuam qhov zoo ntawm CCQ.
Fresnel zone - yog dab tsi?
Yuav suav Fresnel zone li cas?

Hauv tsab xov xwm no kuv xav tham txog cov ntsiab lus tseem ceeb ntawm kev tsim cov choj zoo nkauj wireless, txij li ntau "neeg tsim lub network" ntseeg tias nws yuav txaus los yuav cov khoom siv network zoo, nruab thiab tau txais 100% rov qab los ntawm lawv - uas thaum kawg tsis yog txhua tus ua tiav.

CCQ - yog dab tsi?

CCQ (Client Connection Quality) yog txhais los ntawm lus Askiv li "tus neeg siv khoom sib txuas zoo" - uas, hauv paus ntsiab lus, qhia qhov feem pua ​​​​ntawm qhov kev xav tau rau qhov tseeb tam sim no channel throughput, nyob rau hauv lwm yam lus, qhov feem pua ​​​​ntawm kev ua tiav nrog qhov siab tshaj plaws tau. ntawm cov cuab yeej tshwj xeeb.

Piv txwv li, koj siv cov cuab yeej siv nrog qhov siab tshaj plaws tau dhau los ntawm 200 Mbit / s, tab sis qhov tseeb tam sim no channel yog 100 Mbit / s - qhov no CCQ yog 50%

Hauv cov khoom siv network mikrotic и Ubiquiti muaj ob qhov ntsuas sib cais
Tx. CCQ (Transmit CCQ) - cov ntaub ntawv hloov pauv tus nqi.
Rx. CCQ (Tau txais CCQ) - cov ntaub ntawv txais ceev.

Peb lub ntsiab tseem ceeb cuam tshuam qhov zoo ntawm CCQ

1. Kev hloov ntawm ob lub kav hlau txais xov. Yog hais tias peb tham txog ib tug point-to-point wireless choj, nws yog ib qhov tseeb hais tias cov kav hlau txais xov yuav tsum tau saib ib leeg kom raug raws li qhov ua tau, "qhov muag ntawm qhov muag."

Yog tias koj xav tau ib tug point-to-multipoint Wi-Fi choj, thawj zaug koj yuav tsum xav txog tag nrho cov architecture ntawm tus kws kho mob cov kav hlau txais xov rau cov neeg siv khoom, kom lawv sib tshuam kom raug raws li qhov ua tau.

2. Muaj suab nrov hauv cov channel. Ua ntej txiav txim siab ntawm qhov zaus ntawm tus choj Wi-nkaus, nco ntsoov xyuas txhua zaus rau qhov muaj suab nrov, raws li daim tshev no, xaiv qhov tsawg dua qhov zaus.

3. Fresnel cheeb tsam.

Fresnel zone - yog dab tsi?

Fresnel cheeb tsam yog qhov ntim ntawm lub xov tooj cua yoj channel ntawm ob lub kav hlau txais xov.

Qhov siab tshaj plaws channel ntim yog nyob ntawm qhov chaw nruab nrab ntawm ob lub kav hlau txais xov.

Rau cov teeb liab zoo tshaj plaws, koj yuav tsum xaiv qhov chaw huv, ob qho tib si los ntawm lub cev muaj zog thiab los ntawm cov xov tooj cua tsis muaj zog (raws li tau tham hauv kab lus thib ob).

Yuav suav Fresnel zone li cas?

Formula rau xam Fresnel cheeb tsam ntawm nws lub hauv paus ntsiab lus:

D — nrug (km)
f - zaus (GHz)

Cov mis rau xam Fresnel cheeb tsam ntawm txhua qhov chaw, piv txwv li ntawm ib qho teeb meem:

f - zaus (GHz)
D1 - nyob deb ntawm qhov chaw xam koj xav tau, los ntawm thawj kav hlau txais xov (km)
D2 - nyob deb ntawm qhov chaw xam koj xav tau, los ntawm tus kav hlau txais xov thib ob (km)

Tom qab ua haujlwm zoo los ntawm peb yam no, koj yuav kawg tau txais kev ruaj ntseg wireless txuas nrog lub siab tshaj plaws tau cov ntaub ntawv hloov ceev.

Tau qhov twg los: www.hab.com