UMTS - chii? UMTS rwokugadzira. cellular Telecommunications

Cellular kutaurirana iri pari kuitwa mune rimwe divi chete - kuvandudza yokukurukurirana uye vawedzere date unodiwa. On kumusika nyika pane chichiitika pakati inotungamirwa yepamusoro mitemo uye michina. Maererano neizvi, mazita matsva uye mazita okuremekedza. Uye mumwe wavo ndiye UMTS. Kuti arongwe panze.

prehistory

Mobile musika nyika pari kupfuura purofiti. Zvinotora chikamu dzinenge wese chero nyika. Asi zvino panewo kukwikwidzana. Pane kuramba kuvandudzika pamusoro Mobile kukurukurirana zvigadzirwa. Mukusarudza vagadziri vari bhizimisi chaizvo kukura itsva michina uye zvinoumba kuti Mobile kutaurirana enyika. UMTS zvemichina akava mumwe kuitika ivavo.

Mobile dzezvokukurukurirana richikurukura rechitatu chizvarwa 3G

Kwakavakirwa packet date hutachiwana. The kwaita network zvakadaro nokuda kuwedzera kudiwa mukuru-nokukurumidza michina. Modern parudzi rwechitatu network zvinoshandiswa muminda:

• Video dzenhare kutaurirana;
• dyidzana kupanana mashoko akasiyana Multimedia zvinogona;
• kupararira yakawanda mashoko uye mifananidzo;
• kushanda pamwe intranets uye Indaneti;
• kutepfenyurwa mashoko Multimedia mune asymmetric nzira.

Issues chokuita Standardization nokuda 3G-network, Pari mubasa International Telecommunication Union. Zvino zvakafanira kuti funga UMTS kwemichina. Ndizvo, zvichava pachena kana kutarira wayo zvisikwa uye kushandiswa.

zvisikwa

UMTS Michina yakazokudziridzwa neEuropean Institute for Telecommunications Standards zvakananga kuti Europe. By rutapudzo ichi yakavanda zvinotevera: Universal Mobile Telecommunications System. Sezvo WCDMA mhepo inowanikwa rinoshandiswa pano. Uye zvinofanira kucherechedzwa kuti pfungwa mbiri idzi akasiyana zvachose, kuti haabvumiri kuti kushandiswa anoreva zvakafanana.

The UMTS mureza Kazhinji somunhu Transitional chisarudzo pakati 2G zvemichina uye 3G-4G. Ndiko, achibatsirwa kwayo unogona kuita zvakawanda kumeso yezwi kuvandudza Mobile kukurukurirana pasina kuchinja zvokushandisa, huripo panguva. Sezvo samambure garo mutsetse rakashandiswa pano GSM MAP, uye redhiyo mukana Network vari GSM / unopinza uye WCDMA michina zvabatanidzwa. Recent yakavakwa pamusoro hunotovapo GSM network, asi kushanda zvakafanana. Achitaurazve pakati mimbure pakati rinotengeswa nevaridzi yemapurisa rinoitwa kwaita.

Musimboti zvigadzirwa

In UMTS (uye sei unoshanda, kunzwisiswa zvichaita zvakawanda) akabatanidza yakasiyana redhiyo nhepfenyuro unyanzvi maviri. Panhongonya kuverenga mano anoshandiswa UTRA interfaces. Nokuda Specification 3GPP Releace 4 vaiva nhau pasuo, zvichikurukura pegedhi uye Server nokuchinja pakati. Saka vakakwanisa zviparadzanise MSC zvichikurukura ruzivo uye User Data. Uyezve, Specification ichi Inorondedzera yakatodzama waifarirwa hwaro chikwata kuti UMTS redhiyo kuwana Network. Chii? mashandiro ichi rinobvumira Data prices anosvika 2 megabits muzana wechipiri. Zvino kune vanegumi 3GPP nokurondedzerwa.

UTRAN chakagadzirirwa nokubatanidza nechigadziko yemapurisa uye redhiyo network, uye zviri kukonzera nokushanda zvose RF modules uye makwara mu UMTS. RNC ari nomumbure controller, izvo zvinogona kuiswa zvakananga pangoro yemapurisa michina. Tikafunga zvinhu izvi zviviri, zvinoti nechigadziko yemapurisa controller uye zvakafanana naro, munhu STRUCTURAL muenzaniso UMTS pomumbure anonzi pemambure subsystem. Mune imwe nechimwe chikwata anogona kushandiswa subsystems akawanda akafanana.

Mikana kushanda

3G UMTS anobvumira kushandiswa midziyo kubva vagadziri zvakasiyana, sezvo anoshandisa lu inowanikwa. Uchishandisa luR zvinopa mukana kuti Implementation munhu nyoro handoff handoff pakati vakawanda pazviteshi, izvo zvinogona kushandisa dzakasiyana-siyana zvokushandisa. Cellular kutaurirana mureza UMTS kunodzivirirwa kubva yokuzorora kubatana parwendo, nokuti anoshandisa nyoro handover. Somuenzaniso, apo motokari panzira huru ine noruvara yakasimbiswa chawo pazviteshi, chinhambwe kubva nomumwe wavo kutaurirana pamwechete yeGmail.END_STRONG rwunotumirwa pedyo nayo. The Kubatana haisi kuvhiringidzwa payakakurudzirwa, sezvo zvinoitika GSM network. UMTS munhau iyi ndiyo noushamwari chaizvo kurutivi user. Chokwadi, ichi ichokwadi chete zvikamu zviri kusiyaniswa zvakanaka Network nhau. Eller inowanikwa rakagadzirwa zvachose akazaruka zvakananga kukwezva mari zvokushandisa vagadziri mumunda uyu.

samambure midziyo

Dzinovaka muzongoza Kunoumbwa kwakajairika zvokushandisa, pakati zviri:

• transcoder;
• kuti akashanyira mazita;
• kero remazita;
• GPRS rutsigiro chikwata;
• Gateway kuti pave nemamwe network;
• nokuchinja muzinda Mobile kukurukurirana;
• chawo chiteshi controller.

Last zvinotora pamusoro basa rokugovera mugero zvekuvaka, gwara nokuchinja, masangano handover, muunganidzwa uye kupararira telemetry kudzora subsystem. On transcoder tasked kuti yeEncoding uye decoding kutaura anonongedzera kutapukira kushandisa compression. Kero remazita inomiririrwa Database yose subscribers ose Mobile samambure opareta. The muenzi remazita rine ruzivo pamusoro subscribers vari zvakarukwa nhau yacho.

UMTS kushanda musimboti

Kuti zvava pachena kubva apa description, uyewo achimhanya nomumbure yakadaro, zvinokosha kunzwisisa. In misa CN akaita anokosha kushandiswa, izvo akaderedza kubatanidza Mobile yemapurisa pomumbure, izvozvo zvakawedzera paging, cellular localization uye kusarudzwa zviri rinotengeswa nevaridzi, iyo Implementation pakati kuuya uye ushamwari miri, rinotengeswa nevaridzi handover pakati chawo zvechitima. CN ari Zvinonzwisisika rakakamurwa nzvimbo mbiri - CS uye PIS. Mujinga chiteshi ndiye anokonzera kubudiswa redhiyo anonongedzera, gwara Coding uye mwero kwadzakabva, uye zvakawanda. Uyezve, anodzora simba yomukati loop. Cellular UMTS anogona kushandisa chokuita siyana zvimwewo network vari conventionally mapoka mapoka maviri: ne redunhu kushandisa uye packet kushandisa network. Tsanangudzo yokutanga ndiyo iri pamusoro runhare muchikurukurirana, uye wechipiri - kubatanidza Indaneti. Sezvo nokuchinja centre co-ordinates basa waro mira network, zvinonzi basa rose zvinhu zvinodiwa kuti nokuchinja migero, uye zviri anokonzera chokuita zvakanaka. Achitaurazve Center anoita matanho zvaidiwa handover uye nzvimbo kunyoresa.

mamwe Features

itsva chizvarwa network dzinoratidzwa nokuvapo QoS inobudisa ane seti zvinokosha: kumhanyira, kukurukura, dyidzana uye background. Sezvambotaurwa, yezwi 3G network vachishandisa UMTS. Kuti rave anorondedzerwa nezvedzinza. Pazvese, kwokupedzisira kuzadziswa yakadaro kuchinja zvinoda yokutsiva sechinhu rinotengeswa nevaridzi chinouraya uye nechepasi chechitima subsystems. Uyezve, tinofanira kutsiva dzakawanda midziyo yaishandiswa pachiyero musimboti samambure panguva. Mavakirwo kwakasiyana yekudyidzana nokuvapo kuparadzana huviri akazvimirira chinja pamwero - nokuchinja uye chiratidzo kubudiswa masimba mabasa. Izvi zvose zviri testamendi kuti chokwadi kuti haizopereri yezwi runotevera flow vanofanira ndiwedzere nechigadziko chechitima subsystems uye User zviteshi. New UMTS zvisungo, uye Kuzadziswa zvinangwa izvi zvose zvinoda kusikwa zvigadzirwa uye zvinoriumba kukwezva upfumi makuru.

Ungazviita sei?

Panguva iyoyo, kuti 3G zvinosanganisira mitemo akawanda, rinonyanya kushandiswa CDMA2000 zvenyika uye UMTS. Both ruzivo dzinobva kune vakawanda kuwana bumbiro kuparadzirwa anonongedzera. Achibatsirwa pavo vanokwanisa kuwedzera yakamanikana bhendi anonongedzera mu kwakajairika cellular network. Chokwadi, kuwedzera ichi chakagadzirirwa kupa Wireless Broadband Indaneti.

Zano network akadaro ari nyore chaizvo: inodzidzisa mudziyo chokuita Mobile opareta yemapurisa kana inotsigira mureza uyu uye iri pedyo. Cellular kukurukurirana iyi inoshanda pamusoro nharaunda yakakura kupfuura Wi-Fi, saka subscribers regai kwazvo zvakawanda muchadenga, achishandisa Wireless Indaneti. UMTS zvisungo vanogona wakasununguka kunakidzwa ose mabasa anopiwa. Kana mushandisi anosiya nharaunda mumwe chiteshi, unowira siyana mumwe, asina kurasikirwa pakukurukurirana. Kakawanda UMTS maitikiro ndiyo 2100 MHz.

Kushanda network kudaro zvinoda User michina chaiyo, kureva akangwara foni kuti kutsigira 3G, USB-modems, smartphones, mapiritsi uye Laptop makombiyuta vakagadzirira pamwe pakuvara modules.

Payment 3G vari kunyanya kuitwa imwe nzira mbiri: muripo motokari kana chipeto. Kana yechipiri, inodzidzisa ane Indaneti kwenguva imwe nguva, kazhinji mwedzi. Kune conventionally parinogumira mutero zvirongwa, vane kumbonyanya guru motokari kota, asi kazhinji zvakaoma kupedza mwedzi uno.