Nekuvandudzwa kweInternet tekinoroji, network yekufambisa kumhanya yakavandudzwa zvakare.Mukufambiswa kwenetiweki, narrowband uye Broadband nzira mbiri dzakajairika dzekufambisa.Ichi chinyorwa chichatsanangura mutsauko pakati penarrowband neboardband, uye kuongorora zvakanakira nekuipira kwechimwe nechimwe.
1.Musiyano uripo pakati peNarrowband neBroadband
Narrowband uye Broadband ndiwo maviri akajairika network yekufambisa matekinoroji, uye mutsauko mukuru pakati pawo kumhanya kwekufambisa uye bandwidth.
Narrowband inowanzotsanangurwa senzira yekutaurirana ine inononoka kutapurirana kumhanya uye nhete bandwidth.Narrowband transmission inogona kungoendesa shoma shoma yedata, uye inokodzera zvimwe zviri nyore zvekushandisa, senge runhare nefax.Narrowband transmission tekinoroji iri nyore uye yakaderera mumutengo, asi kumhanya kwekutapurirana kunononoka uye hakugone kusangana nepamusoro-speed transmission zvinodiwa senge yakakura-scale data transmission kana high-definition video.
Broadband inoreva nzira yekukurukurirana ine kukurumidza kutapurirana kumhanya uye yakakura bandwidth.Broadband inogona kufambisa akawanda marudzi edata panguva imwe chete, senge izwi, vhidhiyo, mufananidzo, nezvimwe. Broadband transmission ihigh-speed, yakakura-hombe yekufambisa data tekinoroji inokwanisa kuona kufambisa kwakasanganiswa kwemhando dzakasiyana-siyana dzezviratidzo zvakafanana. kufambisira mberi tekinoroji yekufambiswa kwebroadband yakakwira kupfuura narrowband, inogona kuvimbisa kugadzikana kwekutapurirana uye kuchengetedzeka, uye yave nzira huru yekufambisa munguva yeInternet yazvino.Kazhinji, narrowband uye Broadband vane zvavo zvakanakira nezvainokanganisa.Ndeipi nzira yekufambisa yekusarudza zvinoenderana nezvinodiwa chaizvo.
Kubva pamaonero epfungwa, "yakamanikana" uye "yakafara" ipfungwa dzehukama, hapana muganho wakasimba wenhamba, uye iwo hunhu hwechiteshi hunoenderana nezviratidzo zvechiratidzo.Musiyano uripo pakati pezviviri ndewekuti: ① "Chiratidzo chinozofambiswa" chinonzi kunobva.Iyo sosi siginecha iyo bandwidth idiki zvakanyanya kupfuura iyo yepakati frequency yemutakuri chiratidzo chenarrowband, uye neimwe nzira, chiratidzo chine saizi yakaenzana inonzi chiratidzo chebroadband.②Iyo frequency band resource yakapihwa iwe + iyo chaiyo yekuparadzira nharaunda, tinoidana iyo chiteshi.Iyo yakakura iyo yakagoverwa frequency bhendi zviwanikwa uye iyo yakanyanya kugadzikana nharaunda yekuparadzira, inokwirisa chiyero che data icho chiteshi chinogona kutakura.③ Kubva pahuwandu hweiyo waveform, chiratidzo bandwidth iri Δf, uye mutakuri frequency ndeye fc.Kana Δf <
Kuzvitaura zviri nyore, musiyano mukuru pakati pebroadband uye narrowband ndeye bandwidth.Federal Communications Commission yekuUnited States haina kungopa tsananguro dzakakodzera pane izvi muna 2015, asi zvakare yakajekeswa paWorld Telecommunications Day muna 2010 kuti bandwidth isingasviki 4M inonzi narrowband, uye mabhendi chete anopfuura 4M kana pamusoro anogona inonzi Broadband.
Chii chinonzi bandwidth?
Izwi rekuti bandwidth pakutanga rinoreva hupamhi hweiyo electromagnetic wave bhendi.Zvichitaurwa zviri nyore, ndiwo mutsauko pakati peiyo yepamusoro uye yakaderera frequency yechiratidzo.Parizvino, inonyanya kushandiswa kutsanangura chiyero chepamusoro apo network kana mutsara unogona kutumira data.Muindasitiri yemutsetse wekutaurirana, vanhu vazhinji vanoienzanisa nemugwagwa mukuru, huwandu hwe data inopfuudzwa pamutsetse mukati menguva.
Iyo yakajairika unit yebandwidth ndeye bps (bit pasekondi), inova nhamba yemabhiti anogona kufambiswa pasekondi.Bandwidth ipfungwa yakakosha muminda yakadai seyeruzivo dzidziso, redhiyo, kutaurirana, chiratidzo chekugadzirisa, uye spectroscopy.
2.Zvakanakira uye kuipa kwenarrowband uye Broadband
2.1 Zvakanakira narrowband
1. Mutengo wacho wakachipa, wakakodzera kudhura-kutaurirana zvikumbiro.
2. Inoshanda kune dzimwe nzira dziri nyore dzekutaura, dzakadai senhare, fax, nezvimwe.
3. Easy kuisa uye kushandisa.
2.2 Zvakaipa zvenarrowband
1. Iyo yekumhanyisa kumhanyisa inononoka, uye inogona chete kutumira zvinyorwa zviri nyore, nhamba, nezvimwewo, uye haina kukodzera kufambiswa kwe data yakawanda, senge vhidhiyo, odhiyo, nezvimwe.
2. Kugadzikana uye kuchengetedzeka kwekutumira data hakugone kuvimbiswa.
3. Iyo bandwidth idiki uye huwandu hwekutumira hushoma.
Broadband transmission tekinoroji ine zvinotevera zvakanakira:
High speed
Broadband transmission tekinoroji ine yakanyanya kumhanya yekutapurirana, iyo inogona kuzadzisa zvinodiwa nevanhu zvehukuru-hukuru uye kukurumidza kufambisa data.
High capacity
Broadband transmission tekinoroji inogona kufambisa akawanda marudzi emasaini panguva imwe chete, kuziva kubatanidzwa uye kugovera ruzivo rwemultimedia, uye kuve nehukuru hwekutapurirana.
Kugadzikana kwakasimba
Broadband transmission tekinoroji inoderedza kupindira kwechiteshi uye ruzha uye zvimwe zvinofurira zvinhu kuburikidza nemultiplexing tekinoroji, uye inovandudza kutapurirana uye kugadzikana.
Chinochinjika
Broadband transmission tekinoroji inogona kuenderana neyakasiyana network nharaunda uye data transmission zvinodiwa, kusanganisira waya uye isina waya, network yeruzhinji uye yakavanzika network, nezvimwewo, uye ine huwandu hwakawanda hwekushandisa.
Muchidimbu, seyakakura-kumhanya, yakakura-inotakura data tekinoroji, Broadband transmission tekinoroji inogona kuona yakasanganiswa kufambisa kwemhando dzakasiyana dzezviratidzo pane imwechete yekutaurirana svikiro, uye ine yakakura tarisiro yekushandisa uye kudiwa kwemusika.Kuvandudzwa kweiyo Broadband transmission tekinoroji kunopa vanhu nzira dzinokurumidza, dzakagadzikana uye dzakasimba dzekufambisa data, uye zvakare inogona kuvandudza kunaka uye kuchengetedzeka kwetiweki.
2.4 Zvakaipa zveBroadband
1. Mutengo wemidziyo wakakwirisa, uye mari yakawanda inoda kuiswa mukuvaka nekugadzirisa.
2. Kana iyo network network mune dzimwe nzvimbo isina kukwana, Broadband transmission inogona kukanganiswa.
3. Kune vamwe vashandisi, bandwidth yakakura zvikuru, iyo inoparadza zvinhu.
Kazhinji, narrowband uye Broadband imwe neimwe ine yayo inoshanda mamiriro uye zvakanakira uye nekuipira.Pakusarudza nzira yekukurukurirana, inofanira kusarudzwa maererano nezvinodiwa chaizvo.
Tichivimba neayo akasarudzika mabhenefiti ezvisina kujairika network, isiri-yepakati-yega-yekuronga network zvigadzirwa zvishoma nezvishoma zvave chikamu che emergency emergency system uye vakaita basa rakakosha.Yakasiyaniswa nemaonero ehunyanzvi, iyo isiri yepakati ad hoc network tekinoroji inogona kukamurwa kuita "narrowband ad hoc network tekinoroji" uye "broadband ad hoc network tekinoroji".
3.1Narrowband Ad Hoc Network Technology
Inomiririrwa nezwi rekutaurirana hurongwa, chiteshi chepakati che 12.5kHz uye 25kHz chinowanzoshandiswa kutakura data, iyo inogona kutsigira yakaderera-speed data services kusanganisira izwi, sensor data, nezvimwewo (vamwe vanotsigirawo kutumira mifananidzo).Narrowband ad hoc network tekinoroji inonyanya kushandiswa mumasisitimu ekutaura nezwi mune zvigadzirwa zvekukurumidzira zvekutaurirana.Mabhenefiti ayo akajeka, senge frequency resource reuse, kuchengetedza spectrum zviwanikwa, uye nyore terminal kutenderera;kuvharwa kwenharaunda kunopedzwa kuburikidza ne-multi-hop links;hapana wired yekubatanidza inodiwa munetiweki, uye kutumira kunoshanduka uye nekukurumidza.
3.2Broadband Ad Hoc Network Technology
Pfungwa yekufambisa hunhu hwebroadband ad hoc network tekinoroji, kureva kuti, node dzinogona kufambisa ruzivo munetwork zvinoenderana nechinangwa (unicast kana multicast).Kunyangwe kufukidzwa kwebroadband ad hoc network yakadzikira pane iyo narrowband , tsigiro yayo kune yakakura data traffic (senge chaiyo-nguva vhidhiyo uye kufambisa kwezwi) ndiyo kiyi yekuvapo kwayo.Broadband ad hoc network tekinoroji kazhinji ine yakakwira bandwidth ye2MHz uye pamusoro.Zvakare, nekuwedzera kuri kuita digitization, IP uye kuona, Broadband ad hoc network tekinoroji zvakare chikamu chakakosha chekukurumidzira kutaurirana.
IWAVE kutauriranaine yakazvimirira tekinoroji yekutsvagisa uye timu yekusimudzira uye yakagadzira nhevedzano ye-high-bandwidth MESH isiri-central ad hoc network zvigadzirwa, izvo zvinogona kutumira vhidhiyo nekutaurirana zvisina waya pamadaro marefu, uye anoshandiswa zvakanyanya mukudzivirira moto, patrol, kununura emergency, uye nzira yemazuva ano yekutumirwa.Uye mamwe minda, ita zvakanaka kwazvo.
Nguva yekutumira: Sep-08-2023
