Kunyangwe 4G yakapihwa rezenisi muChina, yakakura-yakakura kuvaka network ichangotanga.Kutarisana nekuputika kwekukura kweiyo mobile data, zvinodikanwa kuti urambe uchivandudza network network uye network yekuvaka mhando.Zvisinei, kupararira kwe4G frequency, kuwedzera kwekuvhiringidza, uye kudiwa kwekugovera nzvimbo ne 2G uye 3G zviteshi zvepasi zviri kufambisa kugadzirwa kwe base station antenna kune kutungamira kwekubatanidzwa kwepamusoro, bandwidth yakafara uye kugadzirisa kushanduka.
4G network yekuvhara huwandu.
Iyo yakanaka network yekuvhara layer uye humwe ukobvu hwehuwandu hwehuwandu ndiwo mabhesi maviri ekuona mhando yetiweki.
Iyo itsva yenyika network inofanirwa kufunga nezve kuvakwa kwetiweki capacity layer uchipedzisa chinangwa chekuvhara."Kazhinji, pane nzira nhatu chete dzekuvandudza network," Wang Sheng, director director weChina wireless network solutions yeCommScope's wireless business unit, akaudza China electronic news.
Imwe ndeye kushandisa ma frequency akawanda kuita kuti bandwidth ive yakafara.Semuenzaniso, GSM pakutanga yaingove ne900MHz frequency.Gare gare, vashandisi vakawedzera uye 1800MHz frequency yakawedzerwa.Ikozvino 3G uye 4G ma frequency akawanda.China Mobile's TD-LTE frequency ine matatu mabhendi, uye frequency ye2.6GHz yakashandiswa.Vamwe vanhu vari muindastiri vanotenda kuti uyu ndiwo muganho, nekuti iyo yakakwira-frequency attenuation ichave yakanyanya kuoma, uye kupinza uye kubuda kwemidziyo hakuna kuenzana.Chechipiri ndechekuwedzera huwandu hwezviteshi zvepasi, iyo zvakare ndiyo inonyanya kushandiswa nzira.Parizvino, kuwanda kwezviteshi zvepasi mumaguta makuru uye epakati nepakati kwakaderedzwa kubva paavhareji yeimwe base station pakiromita kuenda kune imwe base station ye200-300 metres.Yechitatu ndeyekuvandudza spectrum kunyatsoita, inova kutungamira kwechizvarwa chese chenharembozha yekutaurirana tekinoroji.Parizvino, kushanda zvakanaka kwe4G ndiko kwakanyanya, uye kwasvika pakudzika kwe100m muShanghai.
Kuve nekuvharika kwakanaka kwenetiweki uye humwe ukobvu hwehuwandu hwehuwandu hwaro mbiri dzakakosha dzetiweki.Zviripachena, China Mobile chinzvimbo cheTD-LTE ndechekugadzira network yemhando yepamusoro uye kumira pamusoro pemusika we4G uine ruzivo rwepamusoro-soro mushandisi."Isu tinobatanidzwa mukuvaka akawanda e240 LTE network pasi rose.""Kubva pane ruzivo rweCommScope, pane zvinhu zvishanu muLTE network kuvaka. Chekutanga ndechekugadzirisa ruzha rwetiweki; chechipiri ndechekuronga nekudzora chikamu chisina waya; chechitatu ndechekuvandudza network; chechina kuita a basa rakanaka muchiratidzo chekudzoka, ndiko kuti, bandwidth yechiratidzo cheuplink uye chiratidzo chedownlink chinofanira kunge chakafara zvakakwana; yechishanu ndeyekuita basa rakanaka rekuvhara kwemukati uye kuvhara pasi penzvimbo yakakosha yenzvimbo.
Tekinoroji yeruzivo rwekutarisira ruzha.
Iri idambudziko chairo kubata iyo ruzha nhanho uye kuita kuti vashandisi venetiweki vagone kuwana yakakwirira-kumhanya.
Yakasiyana kubva ku3G chiratidzo chekusimudzira nekuwedzera simba rekutapurirana, 4G network ichaunza ruzha rutsva nekuwedzera kwechiratidzo."Unhu hwe4G network ndeyokuti ruzha haruiti chete chikamu chakafukidzwa neantenna, asi chinokanganisa zvikamu zvakapoteredza. Semuenzaniso, ichaita kuti zvigadziriswe zvinyoro zvishoma, zvichiita kuti packet kurasikirwa. chiyero chekufambisa data chakaderedzwa, ruzivo rwemushandisi rwakaderedzwa, uye mari yakadzikira. "Wang Sheng akati, "kure kure iyo 4G network ichibva pa base station, iyo yakaderera chiyero che data, uye padyo ne network ye 4G iri kune transmitter, iyo yakawanda zviwanikwa vashandisi vanogona kuwana. Isu tinofanirwa kutonga nhanho yeruzha, saka kuti network yemupendero inogona kuwana yakakwirira-kumhanya, ndiro dambudziko ratinofanira kugadzirisa."Kugadzirisa dambudziko iri, pane zvakati wandei zvinodiwa: kutanga, bandwidth yechikamu cheRF inofanira kunge yakafara zvakakwana;chechipiri, mashandiro emidziyo yeredhiyo frequency network inofanira kunge yakanaka zvakakwana;chechitatu, bandwidth yeuplink signal yakadzoka inofanira kunge yakakura zvakakwana.
Mune yechinyakare 2G network, iyo network yekuvhara inopindirana yeakatarisana base station maseru yakakura.Nharembozha dzinogona kugamuchira masaini kubva kune akasiyana base zviteshi.Nharembozha dze2G dzinozvivharira otomatiki mubhesi chiteshi nechiratidzo chakasimba, uchifuratira vamwe.Nekuti haizochinjika kazhinji, haizokonzerese kukanganisa kune inotevera sero.Naizvozvo, muGSM network, kune 9 kusvika 12 nzvimbo dzinopindirana dzinogona kushivirirwa.Nekudaro, munguva ye3G, kuvharika kweiyo network kuchave nekukanganisa kukuru pakugadzirisa kugona kweiyo system.Ikozvino, antenna ine 65 dhigirii yakatwasuka hafu kona inoshandiswa kune matatu chikamu chekuvhara.Iwo matatu chikamu chekuvhara LTE anoda antenna yepamusoro-soro kuti iitwe nenzira yakafanana ne3G."Iyo inonzi high-performance antenna zvinoreva kuti kana uchiita 65 degree antenna coverage, kuvharika kwemativi ese etiweki kunoderera nekukurumidza, zvichiita kuti nzvimbo inopindirana pakati pemambure iite diki. Naizvozvo, tinogona kuona zvakajeka kuti LTE network ine yakakwirira uye zvinodiwa zvakanyanya zvemidziyo."Wang Sheng akadaro.
Frequency division yakazvimirira yemagetsi tunable antenna iri kuramba ichinyanya kukosha.
Izvo zvinodikanwa kudzora mupendero wetiweki waveform nenzira kwayo kudzikisa kupindira kwechiteshi.Nzira yakanakisa ndeyekuziva kure antenna control.
Kugadzirisa kupindira kwekutonga kwetiweki, zvinonyanya kuenderana nezvakati wandei: kutanga, network kuronga, kusiya yakakwana margin muhuwandu;chechipiri, nhanho yemuchina, imwe neimwe nzira yekuvaka inofanirwa kudzorwa zvakanaka;chechitatu, kuiswa pamwero.“Takapinda muChina muna 1997 tikaita mapectical cases akawanda.KuAndrew college iyo inoita zvema antennas,tichaita training yekuvadzidzisa kuisa nekushandisa michina yedu isina mawaya.Panguva imwe cheteyo,tinewo chikwata gadzira zvinongedzo nemaantenna." Zvigadzirwa zvisina waya, kunyanya zvigadzirwa zvekunze, zvine nharaunda yakaipisisa yekushanda muhurongwa hwese hwekutaurirana, yakatarisana nemhepo, zuva, mvura, tembiricha yakakwira uye yakaderera tembiricha, saka zvinodiwa pazviri zvakanyanya."Zvigadzirwa zvedu zvinogona kumira ipapo kwemakore gumi kusvika makumi matatu. Hazvisi nyore."Wang Sheng akadaro.
Nguva yekutumira: Aug-03-2022
