Ngokuthuthuka kobuchwepheshe be-inthanethi, isivinini sokudlulisa inethiwekhi sithuthukiswe kakhulu.Ekudluliselweni kwenethiwekhi, i-narrowband ne-broadband izindlela ezimbili ezivamile zokudlulisa.Lesi sihloko sizochaza umehluko phakathi kwe-narrowband ne-boardband, futhi sihlaziye izinzuzo nezingozi zalelo nalelo.
1.Umehluko phakathi kwe-Narrowband ne-Broadband
I-Narrowband ne-broadband ubuchwepheshe obubili obujwayelekile bokudlulisa inethiwekhi, futhi umehluko omkhulu phakathi kwabo yijubane lokudlulisela kanye nomkhawulokudonsa.
I-Narrowband ngokuvamile ichazwa njengendlela yokuxhumana enesivinini sokudlulisa esihamba kancane kanye nomkhawulokudonsa omncane.Ukudluliswa kwe-Narrowband kungadlulisela idatha encane kuphela, futhi kulungele ezinye izimo ezilula zohlelo lokusebenza, njengocingo nefeksi.Ubuchwepheshe bokudlulisa i-Narrowband bulula futhi buphansi ngezindleko, kodwa isivinini sokudlulisela siyanensa futhi asikwazi ukuhlangabezana nezidingo zokudlulisela ngesivinini esikhulu njengokudluliswa kwedatha enkulu noma ividiyo enencazelo ephezulu.
I-Broadband isho indlela yokuxhumana enesivinini sokudlulisa esisheshayo kanye nomkhawulokudonsa obanzi.I-Broadband ingadlulisela izinhlobo eziningi zedatha ngesikhathi esisodwa, njengezwi, ividiyo, isithombe, njll. Ukudluliswa kwe-Broadband ubuchwepheshe bokudluliswa kwedatha obunesivinini esikhulu, obunamandla amakhulu obukwazi ukubona ukudluliswa okuxubile kwezinhlobo eziningi zamasiginali ngesikhathi esisodwa. indlela yokuxhumana Ubuchwepheshe bokudlulisa i-Broadband buthuthuke kakhulu kune-narrowband, bungaqinisekisa ukuzinza nokuvikeleka kokudlulisela, futhi sekuyiyona ndlela yokudlulisela evamile enkathini yesimanje ye-inthanethi.Ngokuvamile, i-narrowband ne-broadband inezinzuzo zayo kanye nokubi.Iyiphi indlela yokudlulisela ongayikhetha incike ezidingweni zangempela.
Ngokombono womqondo, "uwumngcingo" kanye "nobubanzi" imiqondo ehlobene, awukho umkhawulo wezinombolo oqinile, futhi izici zesiteshi ezihlobene nezici zesignali.Umehluko phakathi kwakho kokubili umi kanje: ① "Isiginali ezodluliswa" ibizwa ngokuthi umthombo.Isignali yomthombo umkhawulokudonsa wayo uncane kakhulu kunemvamisa emaphakathi yesithwali iyisiginali ye-narrowband, futhi ngokuphambene, isignali enobukhulu obuqhathaniswayo ibizwa ngokuthi isignali ye-broadband.②Insiza ye-frequency band eyabelwe wena + indawo yangempela yokusakaza, siyibiza ngesiteshi.Uma izinsiza zebhendi yefrikhwensi zibanzi kanye nezimo ezimeme kakhudlwana, kulapho izinga ledatha elikwazi ukuthwala liphezulu.③ Kusukela ku-spectrum ye-waveform, umkhawulokudonsa wesiginali uthi Δf , futhi imvamisa yenkampani yenethiwekhi yi-fc.Lapho Δf <
Ukukubeka kalula, umehluko omkhulu phakathi kwe-broadband ne-narrowband i-bandwidth.I-Federal Communications Commission yase-United States ayizange inikeze izincazelo ezifanele ngalokhu ngo-2015 kuphela, kodwa futhi yacaciswa ngoSuku Lomhlaba Lwezokuxhumana ngo-2010 ukuthi ama-bandwidth angaphansi kuka-4M abizwa ngokuthi i-narrowband, futhi ama-bandwidth kuphela angaphezu kuka-4M noma ngaphezulu angaba. ebizwa ngokuthi i-broadband.
Yini i-bandwidth?
Igama elithi bandwidth ekuqaleni libhekisela kububanzi bebhendi ye-electromagnetic wave.Kalula nje, umehluko phakathi kwemvamisa ephezulu nephansi yesiginali.Okwamanje, isetshenziswa kakhulu ukuchaza isilinganiso esiphezulu lapho inethiwekhi noma ulayini ongadlulisela khona idatha.Embonini yelayini yezokuxhumana, abantu abaningi bayiqhathanisa nomgwaqo onguthelawayeka, inani lemininingwane edluliselwa kulayini phakathi nenkathi yesikhathi.
Iyunithi evamile yomkhawulokudonsa i-bps (ibhithi ngomzuzwana), okuyinani lamabhithi angadluliswa ngomzuzwana.I-Bandwidth ingumqondo oyinhloko emikhakheni efana nethiyori yolwazi, umsakazo, ezokuxhumana, ukucubungula amasignali, kanye ne-spectroscopy.
2.Izinzuzo kanye nokubi kwe-narrowband ne-broadband
2.1 Izinzuzo ze-narrowband
1. Intengo ishibhile uma kuqhathaniswa, ifanele izicelo zokuxhumana ezingabizi kakhulu.
2. Isebenza kwezinye izindlela zokuxhumana ezilula, njengocingo, ifeksi, njll.
3. Kulula ukufaka nokusebenzisa.
2.2 Ububi bebhande elincane
1. Isivinini sokudlulisela siyanensa, futhi singakwazi ukudlulisa umbhalo olula kuphela, izinombolo, njll., futhi asilungele ukudluliswa kwedatha enkulu, njengevidiyo, umsindo, njll.
2. Ukuzinza nokuvikeleka kokudluliswa kwedatha akunakuqinisekiswa.
3. I-bandwidth incane futhi umthamo wokudlulisela unomkhawulo.
Ubuchwepheshe bokudlulisa i-Broadband bunezinzuzo ezilandelayo:
Ijubane eliphezulu
Ubuchwepheshe bokudluliswa kwe-Broadband bunesivinini esikhulu kakhulu sokudlulisa, esingahlangabezana nezidingo zabantu zokudluliswa kwedatha okunomthamo omkhulu kanye nesivinini esikhulu.
Umthamo ophezulu
Ubuchwepheshe bokudlulisa i-Broadband bungadlulisela izinhlobo eziningi zamasiginali ngesikhathi esisodwa, babone ukuhlanganiswa nokwabelana kolwazi lwe-multimedia, futhi babe namandla amakhulu okudlulisela.
Ukuzinza okuqinile
Ubuchwepheshe bokudlulisa i-Broadband bunciphisa ukuphazamiseka kwesiteshi nomsindo nezinye izici ezinomthelela ngobuchwepheshe be-multiplexing, futhi buthuthukisa ikhwalithi yokudlulisela kanye nokuzinza.
Kuyavumelana nezimo
Ubuchwepheshe bokudlulisa i-Broadband bungavumelana nezimo zenethiwekhi ezihlukene kanye nezidingo zokudlulisa idatha, okuhlanganisa izintambo ezingenazintambo, inethiwekhi yomphakathi kanye nenethiwekhi yangasese, njll., futhi inezinhlobonhlobo zezinhlelo zokusebenza.
Ngamafuphi, njengobuchwepheshe bokudluliswa kwedatha obunesivinini esikhulu, obunamandla amakhulu, ubuchwepheshe bokudluliswa kwe-broadband bungakwazi ukubona ukudluliswa okuxubile kwezinhlobo eziningi zamasiginali endaweni efanayo yokuxhumana, futhi bunamathemba abanzi wokusebenzisa kanye nezidingo zemakethe.Ukuthuthukiswa kobuchwepheshe bokudluliswa kwe-broadband kunikeza abantu izindlela zokudlulisa idatha ezisheshayo, ezinzile futhi ezisebenza kahle, futhi kungathuthukisa ikhwalithi nokuvikeleka kwenethiwekhi.
2.4 Ububi be-Broadband
1. Izindleko zemishini ziphezulu, futhi izimali ezengeziwe zidinga ukutshalwa ekwakheni nasekulungiseni.
2. Uma ingqalasizinda yenethiwekhi kwezinye izindawo inganele, ukudluliswa kwe-broadband kungase kuphazamiseke.
3. Kwabanye abasebenzisi, umkhawulokudonsa mkhulu kakhulu, okuwukumosha izinsiza.
Ngokuvamile, i-narrowband ne-broadband ngayinye inezimo zayo ezisebenzayo kanye nezinzuzo kanye nokubi.Lapho ukhetha indlela yokuxhumana, kufanele ikhethwe ngokwezidingo zangempela.
Ngokuthembela ezinzuzweni zayo eziyingqayizivele zokuxhumana okungahleliwe, imikhiqizo yenethiwekhi engeyona isikhungo yokuzihlela kancane kancane ibe yingxenye yohlelo lokuxhumana oluphuthumayo futhi yadlala indima ebalulekile.Uma kuhlukaniswa nombono wezobuchwepheshe, ubuchwepheshe benethiwekhi ye-ad hoc obungagxili bungahlukaniswa ngokuthi "ubuchwepheshe benethiwekhi ye-narrowband ad hoc" kanye "nobuchwepheshe benethiwekhi ye-broadband ad hoc".
3.1I-Narrowband Ad Hoc Network Technology
Imelwe uhlelo lokuxhumana ngezwi, ukuhlukaniswa kwesiteshi okungu-12.5kHz no-25kHz kuvame ukusetshenziselwa ukuthwala idatha, engasekela amasevisi edatha enesivinini esiphansi okuhlanganisa izwi, idatha yenzwa, njll. (ezinye futhi zisekela ukudluliswa kwezithombe).Ubuchwepheshe benethiwekhi ye-Narrowband ad hoc bubuye busetshenziswe kakhulu ezinhlelweni zokuxhumana ngezwi emikhiqizweni yokuxhumana yezimo eziphuthumayo.Izinzuzo zayo zicacile, njengokuphinda kusetshenziswe kabusha kwezinsiza, ukonga izinsiza ze-spectrum, kanye nokuzulazula kwetheminali okulula;ukufakwa kwesifunda kuqedwa ngezixhumanisi zama-multi-hop;akukho uxhumano lwezintambo oludingekayo kunethiwekhi, futhi ukusetshenziswa kuyavumelana nezimo futhi kuyashesha.
3.2I-Broadband Ad Hoc Network Technology
Umqondo womzila uyisici sobuchwepheshe benethiwekhi ye-broadband ad hoc, okungukuthi, ama-node angadlulisela ulwazi kunethiwekhi ngokwenjongo (i-unicast noma i-multicast).Nakuba ukumbozwa kwenethiwekhi yesikhangiso se-broadband kuphansi kunaleyo ye-narrowband , ukusekelwa kwayo kwethrafikhi yedatha enkulu (njengevidiyo yesikhathi sangempela nokudluliswa kwezwi ) kuwukhiye wokuba khona kwayo.Ubuchwepheshe benethiwekhi ye-Broadband ad hoc ngokuvamile bunomkhawulokudonsa ophezulu ongu-2MHz nangaphezulu.Ngaphezu kwalokho, ngesidingo esikhulayo sokwenziwa kwedijithali, i-IP nokubonwa ngamehlo, ubuchwepheshe benethiwekhi ye-broadband ad hoc nabo buyingxenye ebalulekile yezokuxhumana eziphuthumayo.
IWAVE ukuxhumanainethimba elizimele locwaningo lobuchwepheshe nentuthuko futhi lenze uchungechunge lwemikhiqizo yenethiwekhi ye-MESH engekho emaphakathi ye-ad hoc yomkhawulokudonsa ophezulu, engadlulisela ividiyo nokuxhumana ngaphandle kwentambo ebangeni elide, futhi isetshenziswa kabanzi ekuvikelweni komlilo, ukugada, ukutakula izimo eziphuthumayo, kanye nokuthunyelwa kwamasu esimanje.Neminye imikhakha, ibe nokusebenza okuhle kakhulu.
Isikhathi sokuthumela: Sep-08-2023
