Le hoja 4G e fuoe tumello Chaena, mohaho o moholo oa marang-rang o sa tsoa qala.Ho tobana le mokhoa o phatlohang oa kholo ea data ea mohala, hoa hlokahala ho tsoela pele ho ntlafatsa bokhoni ba marang-rang le boleng ba kaho ea marang-rang.Leha ho le joalo, ho hasana ha maqhubu a 4G, ho eketseha ha tšitiso, le tlhokahalo ea ho arolelana setša le liteishene tsa motheo tsa 2G le 3G li khanna nts'etsopele ea li-antenna tsa setsi sa setsi ho ea ka tataiso ea ho kopanya ho phahameng, bandwidth e pharaletseng le phetoho e bonolo haholoanyane.
4G matla a ho fana ka marang-rang.
Sekhahla se setle sa marang-rang le botenya bo itseng ba sekhahla sa bokhoni ke metheo e 'meli ea ho fumana boleng ba marang-rang.
Marang-rang a macha a naha a lokela ho nahana ka kaho ea matla a marang-rang a marang-rang ha a ntse a phethela sepheo sa tšireletso."Ka kakaretso, ho na le mekhoa e meraro feela ea ho ntlafatsa bokhoni ba marang-rang," Wang Sheng, mookameli oa thekiso oa China Wireless network solutions of CommScope's wireless business unit, o bolelletse litaba tsa elektroniki tsa China.
E 'ngoe ke ho sebelisa maqhubu a mangata ho etsa hore bandwidth e atolohe.Mohlala, qalong GSM e ne e na le maqhubu a 900MHz feela.Hamorao, basebelisi ba ile ba eketseha mme maqhubu a 1800MHz a eketsoa.Hona joale maqhubu a 3G le 4G a mangata.China Mobile's TD-LTE frequency e na le lihlopha tse tharo, 'me maqhubu a 2.6GHz a sebelisitsoe.Batho ba bang ba indastering ba lumela hore sena ke moeli, hobane ho fokotseha ha maqhubu a phahameng ho tla ba matla le ho feta, 'me ho kenya letsoho le tlhahiso ea lisebelisoa ha li lekane.Ea bobeli ke ho eketsa palo ea liteishene tsa motheo, e leng mokhoa o sebelisoang haholo.Hajoale, bongata ba liteishene tsa literopo tse kholo le tse mahareng bo fokotsehile ho tloha ho karolelano ea setsi se le seng ka kilometara ho isa seteisheneng se le seng sa limithara tse 200-300.Ea boraro ke ho ntlafatsa ts'ebetso e ntle ea marang-rang, e leng tataiso ea moloko o mong le o mong oa theknoloji ea puisano ea mehala.Hajoale, katleho ea 4G ke eona e phahameng ka ho fetisisa, 'me e fihlile ho theola sekhahla sa 100m Shanghai.
Ho ba le tšireletso e ntle ea marang-rang le botenya bo itseng ba lera la bokhoni ke metheo e 'meli ea bohlokoa ea marang-rang.Ho hlakile hore boemo ba China Mobile bakeng sa TD-LTE ke ho theha marang-rang a boleng bo holimo le ho ema sehlohlolong sa 'maraka oa 4G ka boiphihlelo ba boleng bo holimo ba basebelisi."Re kenya letsoho kahong ea boholo ba marang-rang a 240 LTE lefatšeng.""Ho ea ka phihlelo ea CommScope, ho na le likarolo tse hlano tsa kaho ea marang-rang ea LTE. Ea pele ke ho laola lerata la marang-rang; ea bobeli ke ho rera le ho laola lefapha la mohala; ea boraro ke ho ntlafatsa marang-rang; ea bone ke ho etsa mosebetsi o motle pontsong ea ho khutla, ke hore, bandwidth ea lets'oao la uplink le lets'oao la downlink e lokela ho ba bophara bo lekaneng; ea bohlano ke ho etsa mosebetsi o motle oa tšireletso ea kahare le tšireletso tlasa tikoloho e khethehileng ea libaka.
Lintlha tsa tekheniki tsa tlhahlobo ea taolo ea lerata.
Ke bothata ba 'nete ho laola boemo ba lerata le ho etsa hore basebelisi ba marang-rang ba be le phihlello ea lebelo le holimo.
Ho fapana le ntlafatso ea lets'oao la 3G ka ho eketsa matla a phetisetso, marang-rang a 4G a tla tlisa lerata le lecha ka ntlafatso ea lets'oao."Tlhaloso ea marang-rang a 4G ke hore lerata ha le ame feela lekala le koahetsoeng ke antenna, empa le boetse le ama likarolo tse potolohileng. Ka mohlala, e tla etsa hore ho be le li-handoffs tse bonolo, tse hlahisang sekhahla se phahameng sa tahlehelo ea pakete. Tshebetso ke hore Sekhahla sa phetisetso ea data se fokotsehile, boiphihlelo ba mosebelisi bo fokotsehile, 'me lekeno lea fokotseha."Wang Sheng o itse, "ha marang-rang a 4G a ntse a tsoela pele ho tloha setsing sa setsi, tekanyo ea data e tlaase, 'me ha marang-rang a 4G a le haufi le mochine, basebelisi ba lisebelisoa ba ka fumana lisebelisoa tse ngata. Re hloka ho laola boemo ba lerata, kahoo hore moeli oa marang-rang o ka fumana phihlello e potlakileng, e leng bothata boo re hlileng re hlokang ho bo rarolla."Ho rarolla bothata bona, ho na le litlhoko tse 'maloa: pele, bandwidth ea karolo ea RF e lokela ho ba bophara bo lekaneng;ea bobeli, ts'ebetso ea lisebelisoa tsa marang-rang kaofela a maqhubu a seea-le-moea e lokela ho lekana hantle;ea boraro, bandwidth ea pontšo ea uplink e khutliselitsoeng e lokela ho ba bophara bo lekaneng.
Mocheng oa setso oa 2G, marang-rang a marang-rang a marang-rang a li-cell station tse haufi a batla a le maholo.Mehala ea cellular e ka amohela matšoao ho tsoa liteisheneng tse fapaneng.Lithelefono tsa 2G tsa cellular li tla koala setsi sa setsi ka lets'oao le matla ka ho fetisisa, li hlokomolohe tse ling.Hobane e ke ke ea fetoha khafetsa, e ke ke ea baka tšitiso efe kapa efe ho sele e latelang.Ka hona, marang-rang a GSM, ho na le libaka tse 9 ho isa ho tse 12 tse fetang tse ka mamelloang.Leha ho le joalo, nakong ea 3G, ho koaheloa ha marang-rang ho tla ba le tšusumetso e kholo ho matla a ho sebetsa a tsamaiso.Hona joale, antenna e nang le halofo ea halofo ea 65 degree e sebelisoa bakeng sa tšireletso ea likarolo tse tharo.Ts'ebetso ea likarolo tse tharo tsa LTE e hloka antenna e sebetsang hantle hore e etsoe ka mokhoa o ts'oanang le oa 3G."Seo ho thoeng ke ts'ebetso e phahameng ea "antenna" e bolela hore ha u etsa tšireletso ea li-antenna tsa 65, ho koahela mahlakoreng ka bobeli a marang-rang ho fokotseha ka potlako haholo, ho etsa hore sebaka se pakeng tsa marang-rang se be se senyenyane. Ka hona, re ka bona ka ho hlaka hore marang-rang a LTE a na le maemo a phahameng le litlhoko tse phahameng tsa lisebelisoa."Ho boletse Wang Sheng.
Karohano ea khafetsa antenna e fetolehang ka motlakase e ntse e ba bohlokoa le ho feta.
Hoa hlokahala ho laola moeli oa maqhubu a marang-rang ka nepo ho fokotsa tšitiso ea li-inter station.Tsela e molemohali ke ho hlokomela taolo ea antenna e hole.
Ho rarolla taolo ea ho kena-kenana le marang-rang, haholo-holo ho itšetlehile ka likarolo tse 'maloa: pele, moralo oa marang-rang, ho siea moeli o lekaneng ka makhetlo a mangata;ea bobeli, boemo ba lisebelisoa, mokhoa o mong le o mong oa kaho o lokela ho laoloa hantle;ea boraro, boemo ba ho kenya."Re kene Chaena ka 1997 'me ra etsa linyeoe tse ngata tse sebetsang. Andrew College, e sebetsanang ka ho khetheha le li-antenna, re tla etsa koetliso ea ho ba ruta mokhoa oa ho kenya le ho sebelisa lihlahisoa tsa rona tse se nang mohala. Ka nako e ts'oanang, re boetse re na le sehlopha etsa li-connectors le li-antenna. " Lihlahisoa tse se nang mohala, haholo-holo lihlahisoa tsa ka ntle, li na le tikoloho e mpe ka ho fetisisa ea ho sebetsa tsamaisong eohle ea puisano, e shebane le moea, letsatsi, pula, mocheso o phahameng le mocheso o tlaase, kahoo litlhoko tsa eona li phahame haholo."Lihlahisoa tsa rona li ka ema moo ka lilemo tse 10 ho isa ho tse 30. Ha e le hantle ha ho bonolo."Ho boletse Wang Sheng.
Nako ea poso: Aug-03-2022
