Facebook's Terragraph thev naus laus zis txav los ntawm kev sim mus rau kev siv lag luam

Ib txheej ntawm cov kev pab cuam tso cai rau cov pab pawg ntawm cov chaw nres tsheb me me ua haujlwm ntawm 60 GHz zaus sib txuas lus.

Lub Ntiaj Teb Wireless: Cov kws kho mob hauv Mikebud, Hungary nruab me me Terragraph-enabled chaw rau kev sim uas tau pib thaum lub Tsib Hlis 2018

Facebook tau siv sijhawm ntau xyoo los tsim cov thev naus laus zis los txhim kho lub koom haum ntawm cov ntaub ntawv thiab nws cov kev sib kis ntawm wireless network. Cov thev naus laus zis no tam sim no tau muab tso rau hauv cov chaw lag luam me me 60 GHz hauv paus chaw nres tsheb. Thiab yog tias cov chaw muab xov tooj tau koom nrog, nws tuaj yeem pab txuas lub tsev thiab kev lag luam thoob ntiaj teb wirelessly hauv Is Taws Nem.

Facebook's thev naus laus zis, hu ua Terragraph, tso cai rau cov chaw nres tsheb hauv paus ua ke, xa tawm ntawm 60 GHz thiab tswj hwm thiab faib cov tsheb khiav ntawm lawv tus kheej. Yog tias ib lub hauv paus chaw nres tsheb tsis ua haujlwm, lwm qhov tam sim ntawd yuav dhau nws txoj haujlwm - thiab lawv tuaj yeem ua haujlwm ua ke los nrhiav txoj hauv kev zoo tshaj plaws rau cov ntaub ntawv hla mus.

Twb tau ob peb yam khoom manufacturers, suav nrog Cambium tes hauj lwm, Cov Networks, Nokia и Qualcomm, pom zoo los tsim cov khoom lag luam uas suav nrog Terragraph. Nws qhov kev nthuav qhia tsis ntev los no tau tshwm sim nyob rau lub Ob Hlis ntawm kev nthuav qhia kev lag luam MWC hauv Barcelona. Yog tias cov thev naus laus zis tuaj yeem ua haujlwm tau raws li qhov xav tau, Terragraph yuav ua rau kev siv Internet sai dua thiab pheej yig dua hauv cov chaw xa khoom.

Ntau ntxiv, broadband Is Taws Nem, ib zaug faib tshaj cov nqi kim fiber ntau faus hauv av, tab tom tuaj rau hauv tsev thiab kev lag luam saum huab cua. Txhawm rau ua qhov no, cov neeg nqa khoom tau saib cov bandwidth siab, uas muaj bandwidth siab dua li cov tsis khoom siv tsawg zaus uas tau siv ntev rau cov neeg siv khoom siv hluav taws xob.

Facebook yog txaus siab V-band, uas feem ntau hu ua yooj yim 60 GHz, txawm hais tias technically hais nws stretches ntawm 40 mus rau 75 GHz. Hauv ntau lub teb chaws nws tsis nyob ntawm leej twg, uas txhais tau tias nws yog pub dawb rau siv.

Txawm hais tias cov khoom siv sab hauv tsev txhawb nqa 60 GHz raws li lwm txoj hauv kev rau WiFi tau muaj nyob rau lub sijhawm ntev, cov chaw nres tsheb sab nraum zoov tsuas yog tam sim no tshwm sim. Ntau ISPs tab tom xav txog kev siv 60 GHz los kaw qhov sib txawv ntawm cov txheej txheem uas twb muaj lawm thiab cov chaw tshiab uas lawv xav mus txog, lossis nce lub peev xwm ntawm cov chaw uas twb muaj lawm.

"Nws yog qhov nthuav tiag tiag,"hais tias Shwetank Kumar Saha, tshawb fawb cov phooj ywg thiab PhD tus neeg sib tw hauv computer science ntawm University of Buffalo (New York), kawm efficiency ntawm 60 GHz cov neeg siv khoom siv rau kev teeb tsa sab hauv tsev. - Ntau tus neeg tau ntsib teeb meem nrog kev lag luam ntawm 60 GHz. Muaj ntau qhov kev sib tham ntawm lub ncauj lus no. "

Ib qho teeb meem yog tias millimeter wavelength signals (30 mus rau 300 GHz) tsis mus deb li tsawg zaus cov cim qhia, tau yooj yim absorbed los nag thiab nplooj, thiab tsis txhob nkag mus rau phab ntsa thiab qhov rais.

Txhawm rau kom tau txais ib puag ncig cov teeb meem no, cov chaw muab kev pabcuam feem ntau siv cov wireless txuas ruaj khov, uas cov chaw nres tsheb hauv paus xa cov teeb liab mus rau lub receiver ruaj nyob sab nraum lub tsev. Thiab los ntawm qhov ntawd cov ntaub ntawv twb dhau los ntawm Ethernet cables.

Xyoo tas los, Facebook koom nrog Deutsche Telekom txhawm rau sim Terragraph system hauv ob lub zos Hungarian. Hauv thawj qhov kev xeem cov kws tshaj lij txuas 100 lub tsev rau lub network. Terragraph tso cai rau cov pej xeem siv Is Taws Nem ntawm qhov nruab nrab ntawm 500 Mbps, tsis yog 5-10 Mbps tau txais los ntawm DSL. Tam sim no Facebook tab tom ua tiav kev sim nrog cov neeg ua haujlwm hauv Brazil, Greece, Hungary, Indonesia, Malaysia thiab Tebchaws Meskas.

Lub tshuab muaj ib txheej ntawm software raws li IEEE 802.11 ua, thiab suav nrog cov yam ntxwv xws li lub sijhawm faib ntau yam kev nkag, uas faib cov channel rau hauv cov sijhawm sib txawv thaum lub hauv paus sib txawv tuaj yeem xa cov teeb liab sai sai. Nyob rau hauv ib tug xya-theem OSI network model Terragraph ua haujlwm ntawm txheej peb, hla cov ntaub ntawv ntawm IP chaw nyob.

Hauv Terragraph system, Facebook coj nws cov kev paub dhau los xa cov ntaub ntawv hla nws cov fiber ntau optic channel thiab siv nws rau wireless network, hais tias Chetan Hebbala, Senior Director ntawm Cambium. Txoj haujlwm tau los puv lub voj voog hauv 2017 thaum Facebook ua qhov kev qhia txog software dawb. Qhov program no, Qhib / R, yog thawj zaug npaj rau Terragraph, tab sis tam sim no kuj tseem siv los hloov cov ntaub ntawv ntawm Facebook cov chaw zov me nyuam.

Lub tshuab tseem muaj nws cov kev txwv. Txhua lub hauv paus chaw nres tsheb tuaj yeem xa cov teeb liab hla qhov deb txog li 250 m, thiab txhua qhov kev sib kis yuav tsum tau nqa tawm ntawm txoj kab ntawm qhov pom uas tsis cuam tshuam los ntawm nplooj, phab ntsa lossis lwm yam teeb meem. Anuj Madan, tus thawj coj khoom lag luam ntawm Facebook, hais tias lub tuam txhab tau sim Terragraph hauv nag thiab daus, thiab tias huab cua tsis tau "tsis tau teeb meem" rau kev ua haujlwm nrawm. Tab sis Hebbala hais tias, tsuas yog nyob rau hauv rooj plaub, ntau 60 GHz chaw nres tsheb tau tsim los hloov mus rau ib ntus tus qauv WiFi zaus ntawm 5 GHz lossis 2,4 GHz yog tias poob tshwm sim.

Tus kws tshaj lij ntawm Sprint tau hais tias lub tuam txhab npaj yuav sim cov cuab yeej Terragraph thiab tab tom nrhiav rau hauv cov teeb meem ntsig txog 60 GHz spectrum rau nws lub network. Tus kws tshaj lij AT&T tau hais tias lub tuam txhab tab tom ua qhov kev sim ntsuas ntawm 60 GHz zaus, tab sis tsis muaj kev npaj yuav suav nrog qhov ntau ntawm nws cov tes hauj lwm uas twb muaj lawm.

Saha, ntawm University of Buffalo, zoo siab txog Terragraph txoj hauv kev tau tawm mus rau hauv ntiaj teb. "Thaum hnub kawg, cov tuam txhab yuav saib cov nqi ntawm cov thev naus laus zis, thiab yog tias nws tsawg dua fiber ntau, ces lawv yuav siv tiag tiag," nws hais.

Hebbala hais tias nws lub tuam txhab thawj Terragraph-enabled base chaw nres tsheb yog tam sim no nyob rau hauv "kev tsim kho thiab tsim theem" ​​thiab tej zaum yuav tuaj txog tom qab xyoo no. Lub tuam txhab lub hom phiaj yog muab Terragraph ua lub peev xwm software uas yooj yim los pab lossis rov kho dua nyob deb. "Vam tias, thaum peb tham hauv rau lub hlis, kuv yuav muaj peev xwm tham txog kev tsav dav hlau thiab sim xa mus rau thawj cov neeg siv khoom," nws hais.

Tau qhov twg los: www.hab.com