Yize amanethiwekhi e-LTE angama-450 asetshenzisiwe emazweni amaningi iminyaka eminingi, kuye kwavuselela isithakazelo kubo njengoba imboni iqhubekela phambili enkathini ye-LTE ne-5G. Ukuphuma kokuphuma kwe-2G kanye nokufika kwe-inthanethi ye-inthanethi yezinto (i-NB-IOT) nakho kuphakathi kwezimakethe ezishayela ukwamukelwa kwe-LTE 450.
Isizathu ukuthi i-bandwidth ezungeze i-450 MHZ ilungele kahle izidingo zamadivayisi we-IOT nezinhlelo zokusebenza ezibucayi zomsebenzi ezisukela kumagridi ahlakaniphile nezinsizakalo ze-menering ze-smart kuzicelo zomphakathi. I-450 MHZ Band isekela i-Cat-M Nerrowband Internet yezinto (i-NB-IOT) Technologies, kanti izakhiwo ezibonakalayo zaleli bhendi zilungele ukumboza izindawo ezinkulu, zivumela abaqhubi beselula ukuthi bahlinzeke ngemali ephelele. Ake sibhekisise izinzuzo ezihambisana ne-LTE 450 ne-IOT.
Ukuhlanganiswa okugcwele kudinga amadivayisi we-IOT ukunciphisa ukusetshenziswa kwamandla ukuze uhlale uxhumekile. Ukungeniswa okujulile okunikezwe ngama-450mhz LTE kusho amadivaysi angaxhuma kalula kwinethiwekhi ngaphandle kokuzama njalo ukusebenzisa amandla.
Ukwahluka okuyisisekelo kwe-450 MHZ Band kuyinto yayo ende, eyandisa ukumbozwa okukhulu. Amabhendi amaningi we-LTE amaningi angaphezulu kwe-1 GHZ, nama-5G amanethiwekhi afinyelela ku-39 GHz. Ama-sumplency aphezulu ahlinzeka ngamanani aphezulu wedatha, ngakho-ke i-spectrum engaphezulu yabelwa la mabhendi, kepha lokhu kuza ngezindleko ze-attenuation esheshayo yesiginali, edinga inethiwekhi eminyene yeziteshi eziyisisekelo.
I-450 MHZ Band ikunye ukuphela kwe-spectrum. Isibonelo, izwe elilingana neNetherlands lingadinga izinkulungwane zeziteshi eziyisisekelo ukuze zifinyelele ukumbozwa okugcwele kwe-LTE ye-LTE. Kepha ukwanda kwe-450 MHZ Signal Range kuphela kudinga iziteshi eziyikhulu ezimbalwa ukufeza ukumbozwa okufanayo. Ngemuva kwesikhathi eside emathunzini, ibhendi engu-450mhz Frequency Band manje sekungumgogodla wokuqapha kanye nokuphatha ingqalasizinda ebalulekile efana nabaguquki, izindawo zokuhambisa kanye nokubhekwa kwe-Smart Meterways. Amanethiwekhi we-450 we-MHz akhiwe njengamanethiwekhi azimele, avikelwe yimililo yomlilo, exhunywe emhlabeni wangaphandle, okuthi ngobuningi bawo kuyabavikela kuma-cyberattacks.
Kusukela ngo-450 mhz spectrum kwabelwa abasebenza ngasese, ngokuyinhloko kuzosetshenziselwa izidingo zabasebenzi bezingqalasizinda ezibucayi ezifana nezinsiza kanye nabanikazi benethiwekhi yokusabalalisa. Uhlelo lokusebenza oluphambili lapha kuzoba ukuxhumana kwezinto zenethiwekhi nama-routers ahlukahlukene namasango, kanye nama-smart metret tateways ngamaphoyinti okhiye.
I-400 MHZ Band isetshenziswe kumanethiwekhi omphakathi nawangasese iminyaka eminingi, ikakhulukazi eYurophu. Isibonelo, iJalimane isebenzisa i-CDMA, kuyilapho enyakatho yeYurophu, iBrazil ne-Indonesia basebenzisa i-LTE. Iziphathimandla zaseJalimane zisanda kunikeza umkhakha wamandla nge-450 mhz ye-spectrum. Umthetho unquma ukulawulwa okukude kwezinto ezibucayi zegridi yamandla. EJalimane kuphela, izigidi zezinto zenethiwekhi zilinde ukuxhunywa, futhi i-450 mhz spectrum ilungele lokhu. Amanye amazwe azolandela, awasebenzisa ngokushesha.
Ezokuxhumana ezibucayi, kanye nengqalasizinda ebucayi, imakethe ekhulayo eya ngokuya iba ngaphansi kwemithetho efana namazwe isebenza ukunciphisa umthelela wayo wezemvelo, okuvikeleke amandla, nokuvikela ukuphepha kwezakhamizi zayo. Iziphathimandla kumele zikwazi ukuphatha ingqalasizinda ebucayi, izinsizakalo eziphuthumayo kumele zixhumanise imisebenzi yazo, nezinkampani zamandla kumele zikwazi ukulawula igridi.
Ngaphezu kwalokho, ukukhula kwezicelo zedolobha le-Smart City kudinga amanethiwekhi akhuthazayo ukusekela inani elikhulu lezicelo ezibucayi. Lokhu akusekho nje impendulo ephuthumayo. Amanethiwekhi wokuxhumana abucayi yingqalasizinda esetshenziswa njalo futhi esetshenziswa ngokuqhubekayo. Lokhu kudinga izimfanelo ze-LTE 450, njengokusetshenziswa kwamandla okuphansi, ukumbozwa okugcwele, kanye ne-LTE bandwidth ukusekela ukusakazwa komsindo nevidiyo.
Amandla we-LTE 450 ayaziwa kahle eYurophu, lapho imboni yamandla inikeze ngempumelelo ukufinyelela ngempumelelo ku-450 MHZ Band for LTE I-Band For Low Power Communications (LPWA kanye ne-LTE-M ekukhishweni kwe-3GPP 16 kanye I-INTROWBBING Internet yezinto.
Ibhendi ka-450 MHZ ibe ngumdondoshiya wokulala wokuxhumana okubucayi kwemishini ku-2G ne-3G ERA. Kodwa-ke, manje kunentshisekelo evuselelwe njengama-band azungeze ama-450 mhz ukwesekwa kwe-LTE ikati-m kanye ne-NB-IOT, okwenza balungele izinhlelo ze-IOT. Njengoba lokhu kusetshenziswa kuqhubeka, inethiwekhi ye-LTE 450 izosebenza ngezicelo eziningi ze-IOT futhi isebenzise amacala. Ngengqalasizinda ejwayelekile futhi evame ukuba ekhona, iyinethiwekhi ekahle yokuxhumana kwanamuhla okubucayi. Iphinde ifanele kahle ngekusasa le-5G. Kungakho-450 mhz ekhangelwa ukuthunyelwa kwenethiwekhi nezisombululo zokusebenza namuhla.
Isikhathi sePosi: Sep-08-2022
