Abubuwa
A cikin wannan labarin, Ina so in yi magana game da mahimman abubuwan gina gada mara igiyar waya, tun da yawancin "masu ginin cibiyar sadarwa" sun yi imanin cewa zai isa ya sayi kayan aikin cibiyar sadarwa masu inganci, shigar da samun 100% dawowa daga gare su - wanda. a karshe ba kowa ke samun nasara ba.
CCQ - abin da yake da shi?
An fassara CCQ (Ingantacciyar Haɗin Abokin Ciniki) daga Turanci azaman “Ingantacciyar hanyar haɗin abokin ciniki” - wanda, bisa ƙa'ida, yana nuna adadin kaso na ka'idar yuwuwar zuwa ainihin kayan aikin tashar na yanzu, a wasu kalmomi, adadin abubuwan da aka samu tare da matsakaicin yuwuwar. akan takamaiman kayan aiki.
Misali, kuna amfani da kayan aiki tare da matsakaicin yuwuwar kayan aiki na 200 Mbit / s, amma a zahiri tashar ta yanzu tana 100 Mbit / s - a wannan yanayin CCQ shine 50%
A cikin kayan aikin sadarwa и akwai alamomi guda biyu daban
Tx. CCQ (Transmit CCQ) - yawan canja wurin bayanai.
Rx. CCQ (Karɓi CCQ) - saurin karɓar bayanai.
Manyan abubuwa guda uku masu tasiri ga ingancin CCQ
1. Daidaita eriya biyu. Idan muka yi magana game da gada mara waya ta aya-zuwa-aya, a bayyane yake cewa eriya dole ne su kalli juna daidai gwargwadon iyawa, “ido da ido.”
Idan kuna buƙatar gadar Wi-Fi mai ma'ana-zuwa-multipoint, to da farko kuna buƙatar yin tunani ta hanyar gine-ginen gaba ɗaya daga eriyar sashin mai bayarwa zuwa na abokin ciniki, ta yadda za su shiga daidai gwargwadon iko.
2. Kasancewar amo a cikin tashar. Kafin yanke shawara akan mitar gadar Wi-Fi, tabbatar da duba kowane mita don kasancewar hayaniya, dangane da wannan cak, zaɓi mitar da ba ta da nauyi.
3. Yankin Fresnel.
Fresnel zone - abin da yake da shi?
Yankin Fresnel shine ƙarar tashar igiyar rediyo tsakanin eriya biyu.
Matsakaicin ƙarar tashar yana samuwa a tsakiyar tsakiya tsakanin eriya biyu.
Don sigina mafi inganci, kuna buƙatar zaɓar wuri mafi tsabta, duka daga cikas na jiki da kuma daga raƙuman rediyo (kamar yadda aka tattauna a sakin layi na biyu).
Yadda za a lissafta yankin Fresnel?
Formula don ƙididdige yankin Fresnel a tsakiyar wurinsa:
D — nisa (km)
f - mita (GHz)
Dabarar ƙididdige yankin Fresnel a kowane wuri, misali a wani cikas:
f - mita (GHz)
D1 - nisa zuwa wurin lissafin da kuke buƙata, daga eriya ta farko (km)
D2 - nisa zuwa wurin lissafin da kuke buƙata, daga eriya ta biyu (km)
Bayan yin aiki sosai ta waɗannan abubuwa guda uku, a ƙarshe za ku sami gada mara igiyar waya tare da mafi girman yiwuwar canja wurin bayanai.
source: www.habr.com