Phunzirani kusiyana pakati pa miyezo yayikulu ya mafoni
Pamene mukusankha ndondomeko yolumikiza foni yam'manja pa chonyamulira chanu chosankhidwa ndi chisankho chofunika kwambiri, kotero ndikusankha chithandizo choyenera cha foni yam'manja pamalo oyamba. Mtundu wa sayansi wonyamulira amagwiritsira ntchito umasintha pamene mukugula foni.
Nkhaniyi ikuwonetseratu kusiyana pakati pa miyezo ya matelefoni a GSM , EDGE , CDMA ndi TDMA .
GSM motsutsana ndi CDMA
Kwa zaka zambiri, mitundu iwiri ya mafoni a m'manja-CDMA ndi GSM-akhala osagwirizana. Kusagwirizana kumeneku ndi chifukwa chake mafoni ambiri a AT & T sangagwire ntchito ndi Verizon utumiki komanso mosiyana.
- Othandizira ogwira ntchito a GSM amaika makasitomala zokhudzana ndi SIM khadi yochotsedwa. Izi zimapangitsa kukhala kosavuta kusinthana mafoni; mumangotenga SIM khadi kuchokera foni yanu yakale ndikuiyika mu yanu yatsopano. Teknoloji ya GSM imapezeka ku Ulaya. Gwirizanitsani mfundo iyi ndi foni ndi SIM yosatulutsidwa, ndipo muli ndi foni yomwe mungagwiritse ntchito kunja kwa maulendo ndi SIM kusintha.
- Ma CDMA angakhale kapena alibe SIM makalata, koma zomwe akugwiritsa ntchito zimasungidwa ndi wothandizira, zomwe ziyenera kukupatsani chilolezo choti musinthe mafoni. Mafoni a CDMA ayenera kuwonetsedwa ndi chithandizo chilichonse chimene mumagwiritsa ntchito. Nthawi iliyonse mukasintha zonyamulira, foni iyenera kukonzedweratu kwa wothandizira-ngakhale ngati foni yosatsegulidwa.
Network Technology Chikhalidwe pa Quality
Ubwino wa utumiki wa foni alibe chochita ndi teknoloji imene wopereka amagwiritsa ntchito. Ubwino umadalira pa intaneti mwiniyo ndi momwe mwiniwake amakhalira. Pali mabungwe abwino komanso osakhala abwino ndi matepi a GSM ndi CDMA. Muli ndi mwayi wothamanga kuzinthu zapamwamba ndi mawonekedwe ang'onoang'ono kusiyana ndi zikuluzikulu.
Nanga Bwanji Mafoni Osatsegulidwa?
Kuchokera mu 2015, onse ogwira ntchito ku US akufunidwa kuti awatse mafoni a makasitomala awo atatha kukwaniritsa mgwirizano wawo. Ngakhale mutasankha kuti foni yanu isatsegulidwe kapena kugula foni yatsopano yosatsegulidwa , mwina ndi GSM kapena CDMA foni pamtima, ndipo mungagwiritse ntchito pokhapokha ndi opereka chithandizo. Komabe, kukhala ndi foni yosatsegulidwa kukupatsani mwayi wochuluka wa opereka chithandizo. Inu simuli owerengeka kwa chimodzi chokha.
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Kodi GSM ndi chiyani?
GSM (Global System for Mobile Communications) ndiyo njira yamakono yogwiritsira ntchito foni yamakono, yotchuka kwambiri ku America ndi m'mayiko onse. Othandizira a fonifoni T-Mobile ndi AT & T, pamodzi ndi ogulitsa ang'onoting'ono am'manja, amagwiritsa ntchito GSM pamagulu awo.
GSM ndiyo njira zamakono zamakono zamakono ku US, koma ndi zazikulu m'mayiko ena. China, Russia, ndi India onse ali ndi ogwiritsira ntchito ambiri a GSM kusiyana ndi US. Zambiri kuti matepi a GSM akhazikike ndi mayiko akunja, zomwe zikutanthauza kuti mafoni a GSM ndi osankhidwa abwino omwe akuyenda kunja. Zambiri "
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Kodi ZINTHU ZIYAMBIRI ZIYANI?
Zowonjezera Zowonjezera Zachiwerengero za GSM Evolution) ndizowirikiza katatu kuposa GSM ndipo zimamangidwa pa GSM. Ikonzedwa kuti igwirizane ndi zofalitsa zosakanikirana pa zipangizo zamagetsi. AT & T ndi T-Mobile ali ndi magulu a EDGE.
Mayina ena a teknoloji ya EDGE ndi Owonjezera GPRS (EGPRS), IMT Single Carrier (IMT-SC) ndi Zowonjezereka Zophatikiza Dongosolo la Global Evolution. Zambiri "
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Kodi CDMA ndi chiyani?
CDMA (Code Division Multiple Access ) ikupambana ndi GSM. Sprint, Virgin Mobile, ndi Verizon Wireless amagwiritsa ntchito makanema a teknoloji ya CDMA ku US, monga ena operekera ma cell ang'onoang'ono.
Pamene magulu a 3G CDMA, omwe amadziwikanso kuti "Evolution Data Optimized" kapena "EV-DO" mawotchi, poyamba adatulutsidwa, sangathe kutumiza deta ndikupanga mafoni pa nthawi yomweyo. Nthaŵi zambiri, makamaka ndi opereka ma makina omwe ali ndi intaneti ya 4G LTE, vutoli lapambidwa bwino. Zambiri "
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Kodi TDMA N'chiyani?
TDMA (Time Division Division Multiple Access), yomwe idakutsogoleredwa ndi GSM yapamwamba kwambiri, yakhala ikuphatikizidwa mu GSM. TDMA, yomwe inali njira 2G, sichigwiritsidwanso ntchito ndi akuluakulu ogwira ntchito pafoni zam'manja a US. Zambiri "