Site na mmepe nke teknụzụ ịntanetị, ọ na-emeziwanye ọsọ nnyefe netwọkụ nke ukwuu.Na nnyefe netwọk, warara na brọdband bụ ụzọ nnyefe abụọ a na-ahụkarị.Edemede a ga-akọwa ọdịiche dị n'etiti eriri narrowband, wee nyochaa uru na ọghọm dị na nke ọ bụla.
1.Ọdịiche dị n'etiti Narrowband na Broadband
Narrowband na brọdband bụ teknụzụ nnyefe netwọkụ abụọ a na-ahụkarị, isi ihe dị iche n'etiti ha bụ ọsọ nnyefe na bandwit.
A na-akọwakarị eriri eriri dị ka ụzọ nzikọrịta ozi na-eji nwayọ na-ebufe ngwa ngwa yana bandwidth dị warara.Mbufe warara nwere ike ibunye ntakịrị data, ma dabara maka ụfọdụ ọnọdụ ngwa dị mfe, dị ka ekwentị na faksị.Teknụzụ mgbasa ozi narrowband dịtụ mfe ma dị ọnụ ala, mana ọ na-adị ngwa ngwa na-ebufe ngwa ngwa, enweghị ike irute ihe ndị chọrọ nnyefe ọsọ ọsọ dị ka nnyefe data buru ibu ma ọ bụ vidiyo nkọwa dị elu.
Broadband na-ezo aka na usoro nzikọrịta ozi nwere ọsọ mgbasa ngwa ngwa yana bandwidth sara mbara.Broadband nwere ike ịnyefe ụdị data dị iche iche n'otu oge, dị ka olu, vidiyo, onyonyo, wdg. Mgbasa mgbasa ozi bụ teknụzụ mgbasa ozi dị elu, nnukwu ikike nke nwere ike ịghọta mgbasa ozi agwakọta nke ọtụtụ ụdị akara dị iche iche n'otu oge. Nzikọrịta ozi teknụzụ mgbasa ozi brọdband dị elu karịa eriri dị warara, nwere ike ikwe nkwa nkwụsi ike na nchekwa, wee bụrụkwa usoro mgbasa ozi na-ewu ewu n'oge ịntanetị ọgbara ọhụrụ.N'ozuzu, warara na brọdband nwere uru na ọghọm nke ha.Kedu usoro nnyefe ịhọrọ dabere na mkpa n'ezie.
Site n'echiche echiche, "dị warara" na "obosara" bụ echiche ndị ikwu, enweghị oke ọnụọgụgụ, na ha bụ njirimara ọwa metụtara njirimara mgbaàmà.Ọdịiche dị n'etiti ha abụọ bụ nke a: ① "Ihe mgbaàmà a ga-ebunye" ka a na-akpọ isi iyi.Mgbama isi iyi nke bandwit ya dị ntakịrị karịa ugboro etiti nke onye na-ebu ya bụ mgbama dị warara, ma n'aka nke ọzọ, akara ngosi nwere nha nha ka a na-akpọ mgbama brọdband.②Akụkụ band nke ugboro ekenyela gị + ezigbo ebe mgbasa ozi, anyị na-akpọ ya ọwa.Ka obosara nke ekenyela akụrụngwa ugboro ugboro yana ka ebe mgbasawanye na-esiwanye ike, ka ọnụego data na ọwa nwere ike ibu dị elu.③ Site na ụdịdị dị iche iche nke waveform, bandwit mgbama bụ Δf, na ugboro ole na-ebu bu fc.Mgbe Δf <
N'ikwu ya n'ụzọ dị mfe, nnukwu ọdịiche dị n'etiti brọdband na warara bụ bandwit.Ọ bụghị naanị na Federal Communications Commission nke United States nyere nkọwa dị mkpa na nke a na 2015, ma e mekwara ka o doo anya na World Telecommunications Day na 2010 na bandwit na-erughị 4M na-akpọ narrowband, na naanị bandwit karịrị 4M ma ọ bụ n'elu nwere ike ịbụ. akpọ brọdband.
Gịnị bụ bandwit?
Okwu bandwit na mbụ na-ezo aka na obosara nke eriri ebili mmiri electromagnetic.N'ikwu ya n'ụzọ dị mfe, ọ bụ ọdịiche dị n'etiti mgbama kachasị elu na nke kachasị ala.Ugbu a, a na-eji ya akọwa oke ọnụego netwọkụ ma ọ bụ ahịrị nwere ike ibunye data.N'ime ụlọ ọrụ ahịrị nkwurịta okwu, ọtụtụ ndị na-atụnyere ya n'okporo ụzọ awara awara, ọnụọgụ data na-ebufe na akara n'ime oge.
Otu bandwidth a na-ahụkarị bụ bps (bit kwa nkeji), nke bụ ọnụọgụ ọnụọgụ nke enwere ike ibunye kwa sekọnd.Bandwit bụ isi echiche na mpaghara dị ka usoro ozi, redio, nkwukọrịta, nhazi akara, na spectroscopy.
2.Uru na ọghọm dị na warara na brọdband
2.1 Uru nke narrowband
1. Ọnụahịa ahụ dị ọnụ ala, dabara maka ngwa nkwurịta okwu dị ọnụ ala.
2. Ọdabara na ụfọdụ ụzọ nkwurịta okwu dị mfe, dị ka ekwentị, faksị, wdg.
3. Dị mfe iji wụnye na iji.
2.2 Ọdịmma nke narrowband
1. Ọsọ ọsọ na-ebufe ngwa ngwa, ọ nwere ike ịnye naanị ederede dị mfe, nọmba, wdg, ma ọ dịghị adabara maka nnyefe data nchịkọta, dị ka vidiyo, ọdịyo, wdg.
2. Enweghị ike ịkwenye nkwụsi ike na nchekwa nke nnyefe data.
3. bandwit dị ntakịrị na ikike nnyefe dị oke.
Teknụzụ mgbasa ozi Broadband nwere uru ndị a:
Oke ọsọ
Teknụzụ mgbasa ozi brọdband nwere oke mgbasa ozi dị oke elu, nke nwere ike gboo mkpa ndị mmadụ maka nnukwu ike na nnyefe data dị elu.
Ike dị elu
Nkà na ụzụ mgbasa ozi mgbasa ozi nwere ike ịnyefe ọtụtụ ụdị mgbaàmà n'otu oge, ghọta njikọ na ịkekọrịta ozi mgbasa ozi, ma nwee nnukwu ikike nnyefe.
Nkwụsi ike siri ike
Nkà na ụzụ mgbasa ozi mgbasa ozi na-ebelata nnyonye anya ọwa na mkpọtụ na ihe ndị ọzọ na-emetụta site na teknụzụ multiplexing, ma na-eme ka mma nnyefe na nkwụsi ike.
Enwere ike imeghari
Teknụzụ mgbasa ozi brọdband nwere ike ime mgbanwe na gburugburu netwọkụ dị iche iche yana chọrọ nnyefe data, gụnyere wired na ikuku, netwọk ọha na netwọkụ nkeonwe, wdg, ma nwee ọtụtụ ngwa.
Na nkenke, dị ka a elu-ọsọ, nnukwu-ikike data nnyefe technology, brọdband nnyefe technology nwere ike na-aghọta gwakọtara nnyefe nke multiple dị iche iche nke mgbaàmà na otu nkwurịta okwu usoro, na nwere sara mbara ngwa atụmanya na ahịa chọrọ.Mmepe nke teknụzụ mgbasa ozi brọdband na-enye ndị mmadụ ụzọ nnyefe data ngwa ngwa, kwụsie ike na nke ọma, ma nwee ike melite ogo na nchekwa nke netwọkụ.
2.4 Ọdịmma nke Broadband
1. Ọnụ ngwá ọrụ dị elu, ọ dịkwa mkpa itinyekwu ego n'ịrụ ụlọ na nrụzi.
2. Mgbe akụrụngwa netwọkụ na mpaghara ụfọdụ ezughi oke, mgbasa ozi brọdband nwere ike imetụta.
3. Maka ụfọdụ ndị ọrụ, bandwit dị oke ibu, nke bụ ihe efu.
N'ozuzu, warara na brọdband nke ọ bụla nwere ọnọdụ na uru na ọghọm dị na ya.Mgbe ị na-ahọrọ usoro nzikọrịta ozi, ekwesịrị ịhọrọ ya dịka mkpa dị n'ezie.
N'ịdabere na uru ya pụrụ iche nke ịkparịta ụka n'Ịntanet, ngwaahịa netwọk na-abụghị nke na-ahazi onwe ya ejirila nwayọọ nwayọọ ghọọ akụkụ nke usoro nkwurịta okwu mberede ma rụọ ọrụ dị mkpa.N'ịbụ ndị dị iche na echiche teknụzụ, teknụzụ netwọk mgbasa ozi na-abụghị nke etiti nwere ike kewaa na "teknụzụ netwọk mgbasa ozi narrowband" na "teknụzụ netwọk mgbasa ozi mgbasa ozi".
3.1Teknụzụ netwọkụ Ad Hoc narrowband
N'ịbụ nke usoro nkwurịta okwu olu na-anọchi anya ya, a na-ejikarị oghere ọwa nke 12.5kHz na 25kHz na-ebu data, nke nwere ike ịkwado ọrụ data dị ala nke gụnyere olu, data sensọ, wdg (ụfọdụ na-akwado nnyefe foto).A na-ejikwa teknụzụ netwọk mgbasa ozi narrowband na sistemụ nkwurịta okwu olu na ngwaahịa nkwukọrịta mberede.Uru ya doro anya, dị ka iji akụrụngwa ugboro ugboro, ịchekwa akụrụngwa ụdịdị dị iche iche, yana ịgagharị ọnụ ọnụ dabara adaba;A na-emecha mkpuchi mpaghara site na njikọ multi-hop;Enweghị njikọ wired achọrọ na netwọkụ, na ntinye ya na-agbanwe na ngwa ngwa.
3.2Broadband Ad Hoc Network Technology
Echiche nke ịkwọgharị bụ njirimara nke teknụzụ netwọk mgbasa ozi brọdband, ya bụ, ọnụ nwere ike ịnye ozi na netwọk dịka ebumnuche (unicast ma ọ bụ multicast).Ọ bụ ezie na mkpuchi nke netwọk mgbasa ozi brọdband dị ala karịa nke narrowband , nkwado ya maka nnukwu data data (dị ka vidiyo oge na nnyefe olu) bụ isi ihe dị na ya.Nkà na ụzụ netwọk mgbasa ozi mgbasa ozi na-enwekarị bandwit dị elu nke 2MHz na karịa.Ọzọkwa, site n'ịchọwanye maka digitization, IP na visualization, teknụzụ netwọk mgbasa ozi brọdband bụkwa akụkụ dị mkpa nke nkwukọrịta mberede.
nkwukọrịta IWAVEnwere otu nyocha teknụzụ na-ahụ maka onwe ya na otu mmepe mmepe wee mepụta usoro nke ngwaahịa netwọkụ dị elu MESH na-abụghị nke etiti ad hoc, nke nwere ike ibunye vidiyo na nkwukọrịta ikuku n'ogologo ogologo, ma na-ejikarị ya na nchekwa ọkụ, patrol, nnapụta mberede, na nhazi usoro nke oge a.Na mpaghara ndị ọzọ, nwere ezigbo arụmọrụ.
Oge nzipu: Sep-08-2023
