Ngakhale kuti 4G yapatsidwa chilolezo ku China, ntchito yomanga maukonde akuluakulu yangoyamba kumene.Poyang'anizana ndi kukula kwachulukidwe kwa data yam'manja, ndikofunikira kupititsa patsogolo kuchuluka kwa ma netiweki ndi mtundu wa zomangamanga.Komabe, kufalikira kwa mafupipafupi a 4G, kuwonjezeka kwa kusokoneza, ndi kufunikira kogawana malowa ndi masiteshoni a 2G ndi 3G akuyendetsa chitukuko cha antenna oyambira kupita kumalo ophatikizika apamwamba, bandwidth yotakata komanso kusintha kosinthika.
Kuthekera kwa 4G network.
A zabwino netiweki Kuphunzira wosanjikiza ndi ena makulidwe a mphamvu wosanjikiza ndi maziko awiri kudziwa khalidwe maukonde.
Netiweki yatsopano yapadziko lonse lapansi iyenera kuganizira zomanga zamtundu wa netiweki pomwe ikukwaniritsa zomwe mukufuna."Nthawi zambiri, pali njira zitatu zokha zowonjezera maukonde," Wang Sheng, wotsogolera malonda a China opanda zingwe network solutions of CommScope's wireless business unit, adauza China nkhani zamagetsi.
Chimodzi ndicho kugwiritsa ntchito ma frequency ochulukirapo kuti bandwidth ichuluke.Mwachitsanzo, GSM poyamba inali ndi ma frequency a 900MHz.Pambuyo pake, ogwiritsa ntchito adawonjezeka ndipo ma frequency a 1800MHz adawonjezedwa.Tsopano ma frequency a 3G ndi 4G ndi ochulukirapo.China Mobile's TD-LTE frequency ili ndi magulu atatu, ndipo ma frequency a 2.6GHz agwiritsidwa ntchito.Anthu ena m'makampani amakhulupirira kuti izi ndizo malire, chifukwa kuchepetsedwa kwafupipafupi kudzakhala kovuta kwambiri, ndipo kulowetsa ndi kutulutsa zipangizo sikuli kofanana.Chachiwiri ndikuwonjezera kuchuluka kwa malo oyambira, omwenso ndi njira yomwe imagwiritsidwa ntchito kwambiri.Pakali pano, kachulukidwe ka masiteshoni oyambira m'mizinda ikuluikulu ndi yapakati achepetsedwa kuchoka pakatikati pa siteshoni imodzi pa kilomita kupita ku siteshoni imodzi ya 200-300 metres.Chachitatu ndikuwongolera magwiridwe antchito, omwe ndi chitsogozo cha m'badwo uliwonse waukadaulo wolumikizana ndi mafoni.Pakali pano, mphamvu ya 4G ndiyokwera kwambiri, ndipo yafika pamtunda wa 100m ku Shanghai.
Kukhala ndi netiweki yolumikizidwa bwino komanso makulidwe ena amphamvu ndi maziko awiri ofunikira a netiweki.Mwachiwonekere, malo a China Mobile pa TD-LTE ndikupanga maukonde apamwamba kwambiri ndikuyima pamwamba pa msika wa 4G wokhala ndi ogwiritsa ntchito apamwamba kwambiri."Tikuchita nawo ntchito yomanga ma network ambiri a 240 LTE padziko lapansi.""Kuchokera ku CommScope, pali zinthu zisanu pakupanga maukonde a LTE. Choyamba ndikuwongolera phokoso la intaneti; chachiwiri ndikukonza ndi kuwongolera gawo lopanda zingwe; chachitatu ndikukonzanso maukonde; chachinayi ndikuchita a ntchito yabwino mu chizindikiro chobwerera, ndiko kuti, bandwidth ya chizindikiro cha uplink ndi chizindikiro cha downlink chiyenera kukhala chokwanira; chachisanu ndikuchita ntchito yabwino yophimba m'nyumba ndi kuphimba pansi pa malo apadera a malo.
Tsatanetsatane waukadaulo wamayeso owongolera phokoso.
Ndi vuto lenileni kusamalira phokoso mlingo ndi kupanga maukonde m'mphepete ogwiritsa ntchito mkulu-liwiro.
Mosiyana ndi kukwezedwa kwa ma siginecha a 3G powonjezera mphamvu yotumizira, netiweki ya 4G idzabweretsa phokoso latsopano ndi kukweza kwa siginecha."Makhalidwe a maukonde a 4G ndikuti phokoso silimangokhudza gawo lomwe likugwiritsidwa ntchito ndi antenna, komanso limakhudzanso magawo ozungulira. Mwachitsanzo, zidzayambitsa zofewa zofewa, zomwe zimapangitsa kuti paketi iwonongeke kwambiri. Ntchitoyi ndi yakuti, Kutumiza kwa data kumachepetsedwa, luso la ogwiritsa ntchito limachepetsedwa, ndipo ndalama zimachepa."Wang Sheng adati, "pamene maukonde a 4G akuchokera ku siteshoni yoyambira, m'munsimu chiwerengero cha deta chimakhala chochepa, ndipo kuyandikira kwa intaneti ya 4G ndi transmitter, ogwiritsa ntchito amatha kupeza zambiri. Tiyenera kuyendetsa phokoso, kotero kuti m'mphepete mwa netiweki mutha kupeza mwayi wothamanga kwambiri, lomwe ndi vuto lomwe tikufunika kuthetsa. "Kuti athetse vutoli, pali zofunikira zingapo: choyamba, bandwidth ya gawo la RF liyenera kukhala lalikulu mokwanira;chachiwiri, zida zogwirira ntchito pamaneti onse a wailesi ziyenera kukhala zabwino mokwanira;chachitatu, bandwidth ya chizindikiro cha uplink chobwerera chiyenera kukhala chokwanira.
Mu netiweki yachikhalidwe ya 2G, kufalikira kwa netiweki kwa ma cell oyandikana nawo kumakhala kwakukulu.Mafoni am'manja amatha kulandira ma siginecha kuchokera kumasiteshoni osiyanasiyana.Mafoni am'manja a 2G amangotsekeka pamalo oyambira ndi chizindikiro champhamvu kwambiri, osanyalanyaza ena.Chifukwa sichisintha pafupipafupi, sichidzasokoneza selo lotsatira.Chifukwa chake, mu network ya GSM, pali madera 9 mpaka 12 omwe amatha kulekerera.Komabe, mu nthawi ya 3G, kufalikira kwapaintaneti kudzakhudza kwambiri mphamvu yoyendetsera dongosolo.Tsopano, mlongoti wokhala ndi 65 digiri yopingasa theka yopingasa imagwiritsidwa ntchito kuphimba magawo atatu.Kufalikira kwa magawo atatu a LTE kumafunikira mlongoti wochita bwino kwambiri kuti uchitidwe mofanana ndi 3G."Zomwe zimatchedwa kuti mlongoti wapamwamba kwambiri umatanthawuza kuti pochita kuphimba kwa 65 digiri ya antenna, kuphimba kumbali zonse za netiweki kumachepa mofulumira kwambiri, zomwe zimapangitsa kuti malo omwe akudutsana pakati pa maukonde akhale ang'onoang'ono. Choncho, tikhoza kuona bwino kuti maukonde a LTE ali ndi apamwamba komanso apamwamba. zofunikira zapamwamba pazida."Wang Sheng adati.
Mlongoti wodziyimira pawokha wodziyimira pawokha wamagetsi ukufunika kwambiri.
Ndikofunikira kuwongolera m'mphepete mwa network waveform molondola kuti muchepetse kusokoneza kwa ma station.Njira yabwino ndikuzindikira kuwongolera kwa antenna kutali.
Kuthetsa kusokoneza ulamuliro wa maukonde, makamaka zimadalira mbali zingapo: choyamba, maukonde kukonzekera, kusiya malire okwanira pafupipafupi;chachiwiri, mlingo wa chipangizo, ndondomeko iliyonse yomanga iyenera kuyendetsedwa bwino;chachitatu, unsembe mlingo."Tidalowa ku China mchaka cha 1997 ndipo tidapanga milandu yambiri yothandiza. Ku Andrew College komwe kumagwira ntchito za antennas, tipanga maphunziro owaphunzitsa kukhazikitsa ndi kugwiritsa ntchito zida zathu zopanda zingwe. Nthawi yomweyo tili ndi gulu pangani zolumikizira ndi tinyanga. " Zopangira zopanda zingwe, makamaka zakunja, zimakhala ndi malo ogwirira ntchito oyipa kwambiri pamakina onse olumikizirana, moyang'anizana ndi mphepo, dzuwa, mvula, kutentha kwambiri komanso kutentha pang'ono, kotero zofunikira zake ndizokwera kwambiri."Zogulitsa zathu zimatha kuima pamenepo kwa zaka 10 mpaka 30. Sizophweka kwenikweni."Wang Sheng adati.
Nthawi yotumiza: Aug-03-2022
