Umuyoboro wa Waht ni MESH

Umuyoboro wa mesh ni "umuyoboro wa wireless grid", ni umuyoboro wa "multi-hop", wakozwe uhereye ku muyoboro wa ad hoc, ni imwe mu ikoranabuhanga ry'ingenzi mu gukemura ikibazo "cya nyuma". Mu nzira yo kugera ku muyoboro w'igisekuru gitaha, wireless ni ikoranabuhanga ry'ingenzi. Wireless mesh ishobora kuvugana n'izindi networks mu buryo bufatika, kandi ni imiterere y'umuyoboro uhindagurika ishobora kwaguka buri gihe, kandi ibikoresho bibiri bishobora gukomeza guhuza wireless.

Imiterere rusange

Bitewe n’imiterere y’itumanaho rya multi-hop na topology ya Mesh, umuyoboro wa wireless mesh wahindutse igisubizo cyiza ku miyoboro itandukanye ya wireless access nka internet home network, community network, enterprises network na city area network. Wireless Mesh routers zikora AD hoc networks binyuze mu miyoboro ya multi-hop, itanga icyizere cyo hejuru, serivisi zagutse kandi ikiguzi gito cyo gutangira kuri WMN networking. WMN iragwa byinshi mu biranga wireless AD hoc networks, ariko hari itandukaniro. Ku ruhande rumwe, bitandukanye n’uburyo wireless ad hoc network nodes zigendanwa, aho wireless mesh routers zikorera akenshi usanga hadahinduka. Ku rundi ruhande, ugereranije na wireless ad hoc networks zidafite ingufu, wireless mesh routers zikunze kugira amashanyarazi adahinduka. Byongeye kandi, WMN itandukanye n’imiyoboro ya wireless sensors, kandi akenshi bifatwa ko imiterere y’ubucuruzi hagati ya wireless mesh routers ihamye, isa cyane n’umuyoboro usanzwe wa internet cyangwa campus network. Kubwibyo, WMN ishobora gukora nk’umuyoboro wo kohereza hamwe na serivisi zihamye, nk’umuyoboro usanzwe wa internet remezo. Iyo ishyizwe mu bikorwa by’igihe gito, WMNS ikunze gukora nk’imiyoboro ya mobile AD hoc.

Imiterere rusange ya WMN igizwe n'ibintu bitatu bitandukanye bya network idafite insinga: routers z'amarembo (routers zifite ubushobozi bwo kwinjira/ikiraro), routers za Mesh (aho kwinjira), na clients za Mesh (mobile cyangwa indi). client ya Mesh ihujwe na router ya Mesh idafite insinga binyuze mu guhuza nta nsinga, kandi router ya Mesh idafite insinga ikora network ihamye yo kohereza amakuru mu buryo bwa multi-hop interconnection. Mu miterere rusange ya network ya WMN, router iyo ari yo yose ya Mesh ishobora gukoreshwa nk'uburyo bwo kohereza amakuru ku zindi routers za Mesh, kandi zimwe muri routers za Mesh nazo zifite ubushobozi bw'inyongera bwa gateways za Internet. Router ya gateway Mesh iyobora urujya n'uruza hagati ya WMN na Internet unyuze ku murongo wihuta cyane. Imiterere rusange ya network ya WMN ishobora gufatwa nk'igizwe n'indege ebyiri, aho plane yo kwinjira itanga connection ya network ku bakiriya ba Mesh, na serivisi zo kohereza plane yo kohereza plane hagati ya routers za Mesh. Bitewe no gukoresha ikoranabuhanga rya virtual wireless interface muri WMN, imiterere ya network yakozwe na WMN yarushijeho gukundwa.

HUANET ishobora gutanga Huawei dual band EG8146X5 WIFI6 Mesh onu.

Gahunda y'itumanaho rya MESH

Muri Mesh networking, ibintu nko kwivanga kw'imiyoboro, guhitamo umubare wa hop no guhitamo frequency bigomba gusuzumwa mu buryo bwuzuye. Iki gice gifata WLANMESH hashingiwe kuri 802.11s nk'urugero rwo gusesengura gahunda zitandukanye zishobora gukoreshwa mu miyoboro. Ibi bikurikira bivuga gahunda zo guhuza imiyoboro imwe n'imiyoboro ibiri hamwe n'imikorere yayo.

Imiyoboro ya MESH ifite umurongo umwe

Gahunda yo guhuza imiyoboro ya frequence imwe ikoreshwa cyane cyane mu bice aho ibikoresho n'umutungo wa frequence ari bike. Igabanyijemo frequence imwe ya frequence imwe na frequence imwe ya frequence nyinshi. Mu guhuza imiyoboro ya frequence imwe, access point yose ya wireless Mesh AP na access point ya Root AP ikora mu murongo umwe wa frequence. Nkuko bigaragara ku Ishusho ya 1, channel 802.11b/g kuri 2.4GHz irashobora gukoreshwa mu kohereza no kugarura. Dukurikije imiterere itandukanye ya channel interference mu gihe cyo gushyira mu bikorwa ibicuruzwa n'umuyoboro, channel ikoreshwa hagati ya hops ishobora kuba umuyoboro wigenga rwose udahungabanya, cyangwa hashobora kubaho umuyoboro runaka wa interference (inyinshi muri zo ziri mu bidukikije). Muri iki gihe, bitewe no kubangamira hagati ya nodes zegeranye, nodes zose ntizishobora kwakira cyangwa kohereza icyarimwe, kandi uburyo bwa MAC bwa CSMA/CA bugomba gukoreshwa mu guhuza muri multi-hop. Uko umubare wa hop wiyongera, bandwidth igenewe buri Mesh AP izagabanuka cyane, kandi imikorere nyayo ya frequence imwe ya frequence izaba mike cyane.

Imiyoboro ya MESH ifite frequency ebyiri

Mu miyoboro y’itumanaho ifite imigozi ibiri, buri node ikoresha imirongo ibiri itandukanye y’itumanaho kugira ngo ikoreshe imiyoboro y’itumanaho iherekejwe n’itumanaho. Urugero, serivisi yo kwinjira mu buryo bw’ibanze ikoresha umuyoboro wa 2.4GHz 802.1lb/g, naho umuyoboro wa Mesh backpass ukoresha umuyoboro wa 5.8GHz 802.11a nta nkomyi. Muri ubu buryo, buri Mesh AP ishobora gukora akazi ko gusimbuka no gusimbuka mu gihe ikorera abakoresha imiyoboro y’itumanaho. Ugereranyije n’umuyoboro wa frequency imwe, umuyoboro wa frequency ebyiri ukemura ikibazo cyo gusimbuka kwa channel cyo kohereza no kwinjira inyuma, kandi unoza cyane imikorere ya network. Ariko, mu bidukikije nyabyo no mu miyoboro minini, kubera ko umurongo umwe wa frequency ukoreshwa hagati y’imiyoboro y’itumanaho, nta cyizere cy’uko nta gusimbuka hagati y’imiyoboro. Kubwibyo, hamwe n’ubwiyongere bw’umubare wa hop, umuyoboro wa bandwidth ugenerwa buri Mesh AP uracyagenda ugabanuka, kandi Mesh AP iri kure ya Root AP izaba ifite ikibazo mu kwinjira mu miyoboro. Kubwibyo, umubare wa hop wa itumanaho rifite imigozi ibiri ugomba gushyirwaho witonze.