Waht ndi netiweki ya MESH

Ma mesh network ndi "wireless grid network", ndi netiweki ya "multi-hop", yopangidwa kuchokera ku ad hoc network, ndi imodzi mwamaukadaulo ofunikira kuthana ndi vuto la "mailesi omaliza".M'kati mwa kusinthika kwa netiweki ya m'badwo wotsatira, opanda zingwe ndiukadaulo wofunikira.Ma mesh opanda zingwe amatha kulumikizana ndi maukonde ena, ndipo ndi makina opangira maukonde omwe amatha kukulitsidwa mosalekeza, ndipo zida ziwiri zilizonse zimatha kusunga kulumikizana opanda zingwe.

General mkhalidwe

Ndi mawonekedwe a multi-hop interconnection ndi Mesh topology, network mesh network yasintha kukhala yankho lothandiza pama network osiyanasiyana opanda zingwe monga Broadband home network, network network, network network and metropolitan area network.Ma Wireless Mesh routers amapanga ma AD hoc network kudzera pa ma multi-hop interconnection, omwe amapereka kudalirika kwakukulu, kufalikira kwa ntchito zambiri komanso kutsika mtengo kwapaintaneti kwa WMN.WMN amatengera zambiri za ma network opanda zingwe AD hoc, koma pali zosiyana.Kumbali imodzi, mosiyana ndi kuyenda kwa ma node opanda zingwe a Ad Hoc network, malo omwe ma routers opanda zingwe a Mesh nthawi zambiri amakhazikika.Kumbali ina, poyerekeza ndi ma network opanda zingwe a Ad Hoc opanda mphamvu, ma routers opanda zingwe a Mesh nthawi zambiri amakhala ndi mphamvu zokhazikika.Kuphatikiza apo, WMN ndiyosiyananso ndi ma sensa opanda zingwe, ndipo nthawi zambiri amaganiziridwa kuti mtundu wamalonda pakati pa ma routers opanda zingwe a Mesh ndiwokhazikika, ofanana ndi netiweki yofikira kapena netiweki yamasukulu.Chifukwa chake, WMN imatha kukhala ngati netiweki yotumizira anthu omwe ali ndi ntchito zokhazikika, monga maukonde achikhalidwe.Ikagwiritsidwa ntchito kwakanthawi kochepa, WMNS imatha kukhala ngati ma network amtundu wa AD hoc.

Mapangidwe a WMN ali ndi zinthu zitatu zosiyana za netiweki zopanda zingwe: ma routers (ma router okhala ndi zipata / mlatho), ma mesh routers (malo olowera), ndi makasitomala a Mesh (mafoni kapena ayi).Makasitomala a Mesh amalumikizidwa ndi rauta ya Wireless Mesh kudzera pa intaneti yopanda zingwe, ndipo rauta ya Mesh yopanda zingwe imapanga netiweki yotsatsira yokhazikika munjira yolumikizira ma multi-hop.Pamapangidwe amtundu wa WMN, rauta iliyonse ya Mesh itha kugwiritsidwa ntchito ngati njira yotumizira ma data kwa ma router ena a Mesh, ndipo ma router ena a Mesh alinso ndi kuthekera kowonjezera kwa zipata zapaintaneti.Chipata cha Mesh rauta chimatsogolera magalimoto pakati pa WMN ndi intaneti pa ulalo wamawaya othamanga kwambiri.Mapangidwe amtundu wa WMN amatha kuonedwa ngati opangidwa ndi ndege ziwiri, momwe ndege yolumikizira imapereka ma intaneti kwamakasitomala a Mesh, ndi maulendo otumizira ndege opita patsogolo pakati pa ma mesh routers.Ndi kuchulukirachulukira kwaukadaulo wamawonekedwe opanda zingwe mu WMN, mamangidwe a netiweki opangidwa ndi WMN atchuka kwambiri.

HUANET ikhoza kupereka Huawei wapawiri bandi EG8146X5 WIFI6 Mesh onu.

Pulogalamu ya MESH

Mu maukonde a Mesh, zinthu monga kusokoneza mayendedwe, kusankha nambala ya hop ndi kusankha pafupipafupi ziyenera kuganiziridwa mozama.Gawoli limatenga WLANMESH kutengera ma 802.11s ngati chitsanzo kuti mufufuze njira zosiyanasiyana zochezera pa intaneti.Zotsatirazi zikufotokozera njira zolumikizirana ma frequency a single-frequency network ndi ma network amtundu wapawiri komanso momwe amagwirira ntchito.

Single frequency MESH networking

Dongosolo la maukonde amtundu umodzi limagwiritsidwa ntchito makamaka m'malo omwe zida ndi mafupipafupi zida ndizochepa.Imagawidwa mu single-frequency single-hop ndi single-frequency multi-hop.Mu maukonde amtundu umodzi, malo onse opanda zingwe a Mesh AP ndi malo olowera mawaya a Root AP amagwira ntchito limodzi.Monga momwe tawonetsera pa Chithunzi 1, tchanelo 802.11b/g pa 2.4GHz chingagwiritsidwe ntchito pofikira ndi kutumizanso.Malinga ndi malo osiyanasiyana osokoneza ma tchanelo pakukhazikitsa kwa chinthucho ndi netiweki, njira yomwe imagwiritsidwa ntchito pakati pa ma hop ikhoza kukhala njira yodziyimira yokha yosasokoneza, kapena pangakhale njira ina yosokoneza (zambiri zomalizazi zili pamalo enieni. ).Pachifukwa ichi, chifukwa cha kusokoneza pakati pa ma node oyandikana nawo, ma node onse sangathe kulandira kapena kutumiza nthawi imodzi, ndipo njira ya MAC ya CSMA / CA iyenera kugwiritsidwa ntchito pokambirana mumagulu amitundu yambiri.Ndi kuwonjezeka kwa chiwerengero cha hop, bandwidth yomwe imaperekedwa ku Mesh AP iliyonse idzachepa kwambiri, ndipo machitidwe enieni a ma frequency network adzakhala ochepa kwambiri.

Maukonde awiri pafupipafupi a MESH

Mu maukonde apawiri-band, node iliyonse imagwiritsa ntchito ma frequency awiri osiyanasiyana pobwerera kumbuyo ndi kulowa.Mwachitsanzo, ntchito yofikira kwanuko imagwiritsa ntchito tchanelo cha 2.4GHz 802.1lb/g, ndipo netiweki yam'mbuyo ya Mesh backpass imagwiritsa ntchito njira ya 5.8GHz 802.11a popanda kusokoneza.Mwanjira iyi, Mesh AP iliyonse imatha kugwira ntchito yakumbuyo ndi kutsogolo kwinaku ikuthandizira ogwiritsa ntchito am'deralo.Poyerekeza ndi maukonde amodzi pafupipafupi, maukonde amtundu wapawiri amathetsa vuto losokoneza njira yotumizira kumbuyo ndikufikira, ndipo amathandizira kwambiri magwiridwe antchito.Komabe, m'malo enieni komanso maukonde akuluakulu, chifukwa gulu lomwelo lafupipafupi limagwiritsidwa ntchito pakati pa maulalo a backhaul, palibe chitsimikizo kuti palibe kusokoneza pakati pa njira.Chifukwa chake, pakuwonjezeka kwa chiwerengero cha hop, bandwidth yomwe imaperekedwa ku Mesh AP iliyonse imatsikabe, ndipo Mesh AP kutali ndi Root AP idzakhala yopanda phindu panjira.Chifukwa chake, kuchuluka kwa hop kwa maukonde amitundu iwiri kuyenera kukhazikitsidwa mosamala.