Ma'anar GSM (Global System for Mobile Communications)
GSM (mai suna gee-ess-em ) shi ne mafi ƙarancin ƙirar salula , kuma ana amfani da ita a duniya, saboda haka kuna jin labarin shi a cikin hanyar GSM da kuma sadarwar GSM, musamman ma idan aka kwatanta da CDMA .
GSM da farko ya tsaya don Ƙwararren Kasuwancin Group amma yanzu yana nufin Global System for Mobile sadarwa.
Bisa ga GSM Association (GSMA), wanda yake wakiltar abubuwan da ke tattare da kamfanonin sadarwa na duniya baki daya, kimanin kashi 80 cikin dari na duniya suna amfani da fasahar GSM yayin sanya kira mara waya.
Wadanne Gidajen GSM ne?
Ga ƙarancin gaggawa na kawai ƙananan masu sintiri na wayar da ke amfani da GSM ko CDMA:
GSM:
- T-Mobile
- AT & T
- Mara waya ta Indigo
- Kayan salula
- TerreStar
UnlockedShop yana da jerin ƙididdiga na GSM a Amurka.
CDMA:
- Gudu
- Verizon Mara waya
- Virgin Mobile
GSM da CDMA
Don dalilai masu amfani da yau da kullum, GSM yana ba wa masu amfani damar fasaha na kasa da kasa fiye da sauran fasaha na cibiyar sadarwa na Amurka kuma zasu iya taimakawa wayar ta zama "wayar duniya." Menene ƙari, abubuwa kamar sauƙaƙan wayoyi da amfani da bayanan yayin kira a goyan baya GSM cibiyar sadarwa amma ba CDMA.
Masu sufurin GSM suna da kwangilar tafiya tare da wasu masu karɓar GSM kuma yawanci suna rufe wuraren yankunan karkara fiye da cin masu yin amfani da CDMA, kuma sau da yawa ba tare da kisa ba .
GSM yana da amfani da katunan katunan sauƙin swappable. Wayoyin GSM suna amfani da katin SIM don adana bayaninka (asalin mai biyan kuɗi) kamar lambar wayarka da sauran bayanan da ya tabbatar da cewa kai ne mai biyan kuɗi zuwa mai ɗaukar hoto.
Wannan yana nufin za ka iya sanya katin SIM a kowace wayar GSM don ci gaba da amfani da shi a kan hanyar sadarwar tare da duk bayanan biyan kuɗinka na baya (kamar lambarka) don yin kiran waya, rubutu, da dai sauransu.
Tare da wayoyin CDMA, duk da haka, katin SIM bai adana irin wannan bayanin ba. Tabbatarka yana haɗe da cibiyar CDMA amma ba wayar ba. Wannan yana nufin ƙaddamar katin SIMMA katin SIM ba "kunna" na'urar ba a cikin hanya ɗaya. Ka maimakon buƙatar yarda daga mai ɗaukar hoto kafin ka iya kunna / swap na'urorin.
Alal misali, idan kai mai amfani na T-Mobile, zaka iya amfani da wayar AT & T a kan cibiyar sadarwa T-Mobile (ko madaidaici) idan dai kun sanya katin SIM na T-Mobile a cikin AT & T. Wannan yana da amfani sosai idan GSM ya karya waya ko kuna son gwada wayar abokin ku.
Ka tuna, duk da haka, cewa wannan gaskiya ne kawai ga wayoyin GSM a cibiyar sadarwar GSM. CDMA ba daidai ba ne.
Wani abu da za a yi la'akari lokacin da aka kwatanta CDMA da GSM shine duk cibiyoyin GSM suna tallafawa yin waya yayin amfani da bayanai. Wannan yana nufin za ka iya fita da kuma game da kira na waya amma har yanzu amfani da taswirar kewayawa ko kewaya intanit. Irin wannan damar ba a goyan baya akan yawancin cibiyoyin CDMA ba.
Dubi bayaninmu game da CDMA don ƙarin bayani game da bambance-bambance tsakanin waɗannan sharuɗɗa.
Ƙarin Bayani akan GSM
Asalin GSM za'a iya dawo da shi a 1982 lokacin da Cibiyar Harkokin Kasuwanci da Sadarwa ta Turai (GPT) ta kirkira kungiyar ta GSM don manufar zayyana fasaha mai fasaha ta Turai.
GSM bai fara amfani dasu ba har sai shekarar 1991, inda aka gina ta ta amfani da fasahar TDMA .
GSM yana bada cikakkun abubuwa kamar kiran ɓoye waya, sadarwar bayanai, ID ɗin kira, aika kira, kiran kira, SMS, da kuma sadarwar.
Wannan fasaha ta wayar salula yana aiki a bandar MHz 1900 a Amurka da kuma bandar 900 MHz a Turai da Asiya. Ana amfani da bayanan da kuma digitattun bayanai, sa'an nan kuma aika ta hanyar tashar tare da wasu bayanan ruwa guda biyu, kowannensu yana yin amfani da nasu nasu.