HSDPA - kuyini? HSDPA ophoqelelwe ukuvala shaqa

Ubuchwepheshe ephezulu ijubane iphakethe ukufinyelela nge isiteshi okokufaka ozinikele - ngakho imele HSDPA. Kuyini futhi yiziphi izinzuzo zaleli format namuhla ukwazi nenani elincane kuphela elihlanganyela abasebenzisi, kodwa ubuhlobo kuvamile impela namuhla. Futhi uma nje eminyakeni embalwa edlule, ochwepheshe abaningi kuphela wacabanga yini ukuthi kuyini nokuthi luhlobo luni lwekusasa ungakwazi ukulinda lesi sakhiwo, kodwa manje ababhalisile abavamile abakhuthalele usebenzisa kwakwakhe ezinjalo, elithengiswa njengoba 4G «kwesizukulwane sesine uxhumano."

Kungani sasidingeka?

Isimo jikelele emkhakheni amanethiwekhi oyisizukulwane sesithathu okungukuthi, uma sikubeka kahle, ongenathemba, futhi lokho isizathu esiyinhloko esenza abaningi abahlinzeki besevisi unesithakazelo HSDPA uxhumano. Kuyini - abasebenzisi awazi, kodwa 4G isifinyezo ukuheha ngaphezulu 3G, ngoba ziqondakala njengoba ekhiqizayo ngokushesha futhi.

Bambalwa abantu bazi ukuthi kowezi-2000 okuqala e-Europe CDMA futhi HSDPA opharetha onginike ezingaphezu kuka $ 100 billion. Ngoba nje ukuze uthole ilayisensi ukuthunyelwa amanethiwekhi oyisizukulwane sesithathu. Ngakho, sebuningini izinkampani amaselula babe izikweletu Ngokwesayensi yokuhlolwa kwezinkanyezi, ukuze bagcine nje singase sivaleleke. Phela, iqiniso liwukuthi kuze kube muva nje, emakethe ngokuvamile, zazingekho 3G-amafoni, ngakho kwakungekho ndlela yokuphambukela ukudayela inombolo oyifunayo ababhalisile okwamanje, esizokwenza ukuba baphinde babe utshalomali.

HSDPA - Internet mobile namuhla

Yiqiniso, muva nje liqala ukuthuthukiswa esebenzayo phakathi kwalabo izinkampani, okuyinto ngesikhathi esisodwa izimali 3G sphere, kanye HSDPA. Kuyini lokhu? Lokhu ukuthela inani elikhulu izingcingo, lapho ithuba basebenzisa i-3G njengoba esebenzayo inthanethi, nge ukucutshungulwa fast kakhulu kolwazi ahlukahlukene nge inethiwekhi. Esikhathini sethu cishe zonke ifoni yesimanje mobile, eyayibukiswa ezindaweni eziningi kule minyaka embalwa edlule, nsuku saziso ifakwe ukufinyelela 3G. Ngempela, ngesikhathi ubiquity ka-Inthanethi neze ukusebenzisa ngaphandle isivinini esiphansi kakhulu compounds kancane ubudala.

Ubani ulisebenzisa?

Ezimakethe mobile abaningi ngokuvamile ziqala ukuvela amadivayisi babe, ngaphezu 3G, HSDPA ubuchwepheshe busekelwa. Kuyini futhi iziphi izinzuzo lobu buchwepheshe GPRS, abasebenzisi eziphambili ngokuvamile abazi abantu abaningi kangaka bebuza umbuzo okunengqondo: kuwufanele ukuthenga ifoni, nokuthi kuzoba ikhiqize kakhudlwana ngokuya Internet.

Abaningi ayenomkhuba cabanga lobu buchwepheshe njengoba esiteji zesikhashana kunethiwekhi ngesivinini ngokuthi 4G, kusukela inethiwekhi isebenza kuhle ezimweni zasemadolobheni kanye engasetshenziswa kalula endlini.

Yiziphi izinzuzo zayo?

Lokhu ubuchwepheshe ikuvumela ukuba kanyekanye ukukhonza eziningi abasebenzisi ngokusebenzisa ubuchwepheshe multiplexing nge sikhathi, nekhodi nokusabalalisa. HSDPA zokusebenza main isimiso - idatha eningi, isivinini ephakeme. Yilokho okwenza le nethiwekhi omunye efaneleka kakhulu ukusingatha traffic ngakanye kubasebenzisi amaningi.

Ngesisekelo lobu buchwepheshe has izici ezilandelayo:

• Eguquguqukayo esephepheni uhlelo kanye QPSK ukushintshashintsha kwezwi kanye 16 Unjiniyela: QAM.
• Akhethekile edluliselwe olandelwayo.
• ukuhlonza Okuqhubekayo kuqala emgwaqweni Node B ngokusebenzisa iphrothokholi isivinini MAC-okusezingeni eliphezulu.

Lobu buchwepheshe ihumusha amasevisi eziphambili multimedia ezingeni elisha lonke, okuvumela ababhalisile ukusebenzisa uxhumano isheshe. Lokhu kungenxa yokuthi, sibonga amagugu eliphezulu ukuthumela ulwazi izinga, uma ukubambezeleka mancane, kodwa lokhu kwandisa ivolumu idatha ethunyelwe.

kusetshenziswa kanjani?

Incazelo nolwazi HSDPA yembula injongo eyinhloko inethiwekhi - ukuqinisekisa esiphezulu ekusetshenzisweni umsakazo spectrum enkonzweni izinkonzo ezihlukahlukene, okuyinto zisenza sibe isidingo an eliphezulu ngokwedlulele idatha ukudluliswa izinga abasebenzisi phezu iziteshi downlink, ezifana nokufinyelela internet, kanye amafayela Ukulayisha.

Inethiwekhi yethulwa wabasebenzisi sokuqala kule 3GPP ejwayelekile, inguqulo yesihlanu. Ngekucabanga, iphethe kwesejwayelekile iseli osayizi lapho usebenzisa lolu ubuchwepheshe kungenzeka ukunikeza ezingaba ngu-10 Mbit / s. Kakhulu high value nesivinini imingcele enjalo kuyinto 14.4 Mbit / s, kepha empeleni ukufezekisa lokhu ngejubane cishe kungenakwenzeka.

ukuthuthukiswa ezalandela 3GPP amazinga ziqondiswe ukukhuphula umkhawulo isivinini, lapho sizokwazi ukulindela ukuthi ngokuhamba kwesikhathi izoqala ukufinyelela 20-30 Mbit / s. Ukusiza ekufezeni lezi abakuzuzile Isivinini kufanele MIMO sici, kanye izindlela ezintsha zokuthola izinsuku usebenzisa antenna afanayo.

Kufanele I sebenzisa it?

Manje kuzinga esisebenzayo waqaphela ngesivinini afika ku 42 Mbit / s, futhi inkolelo-mbono, uma sizoba ukukhululwa-11 3GPP ejwayelekile, ijubane bayobe sebekhona kakade cishe 337 Mbit / s. Kuze kube manje, njalo inethiwekhi UMTS HSDPA 3G, kodwa ijubane namanje kushiya okuningi okufanele oyifunayo, nakuba zamadivayisi eselula ingaphezu eyamukelekayo.

Ngenxa ezinhle kwedatha rate, izinga okusezingeni uxhumano unomphela futhi ukusebenza cishe ungaphazanyiswa lokhu format angashintsha ngokuphelele umfanekiso abasebenzisi ezahlukene yegajethi isizukulwane kwakwakhe lwesithathu. Ngesikhathi esifanayo ezinye opharetha ngokuvamile atholakala HSDPA ophoqelelwe ukuvala shaqa, okungaba ngempela edabukisayo.

WCDMA noma HSDPA?

ukunciphisa Capacious 3G kuhlanganisa inqwaba ubuchwepheshe ehlangana ndawonye ngaphansi kwesihloko esithi 'ama-third isizukulwane kwakwakhe. " Ikakhulu, i-ezivamile kude iyona WCDMA futhi HSDPA, okuyinto ukufihla ngaphansi ezihlukahlukene nobuchwepheshe bezokuxhumana, ezihlobene ngokuyisisekelo kubantwana kuso isizukulwane sesithathu, kodwa bahluke ngokuphelele.

Uma sicabanga bese uqhathanisa lezi ubuchwepheshe, i-HSDPA ithuthuke kakhulu, futhi akumangalisi, ngoba yasungulwa kancane kamuva kuqhathaniswa WCDMA futhi ivumela eliphakeme uxhumano nesivinini. Ngakho, uma ubuchwepheshe bamuva inikeza ijubane kungekho Mbps ezingaphezu kuka 3.6, i-HSDPA imfundiso futhi zonke lingafika mayelana 42 Mbit / s, nakuba practice zimiso Yiqiniso, kunokuba ezinjalo. Kufanele kuqashelwe ukuthi kungase uxhumano lokhu format udluliselwe umane HSPA, emelela inyunyana nezakhiwo ezimbili - HSUPA futhi HSDPA. Kuyini HSUPA futhi HSDPA, kule nguqulo? Lokhu ukusheshisa kanyekanye abaxhumene eziphumayo nezingenayo.

Yikuphi okungcono?

Ekusebenteni, kunzima ukukhetha lokho namanje kangcono, nokuthi ungakwazi uvotele WCDMA, HSDPA internet salokho, kuye ngesimo kanye nezidingo. Kumelwe ukhethe phakathi amanethiwekhi ezifana ngokuvamile ukwenza abanikazi 3G-imodemu isekela amafomethi ezimbili nje, kanye exhunywe kuye opharetha. Umsuka kuveza abantu enjalo kungaba Ngenxa ukuzinza ehlukile noma enamathela khona lingaqinisekile. Kufanele kuqashelwe nokuthi ngezinye izikhathi kunezici labo izimo lapho efulethini elilodwa ingasetshenziswa ngokubili ejwayelekile zokuxhumana, ngenkathi kwelinye ikamelo isetshenziswa WCDMA kuphela. Kufanele futhi kuthiwe usuke njalo kungaba ezibucayi uma kwenzeka ukuthi udinga ukuxhumana okuqhubekayo, futhi kufanele zibhekwe.