Netiweki ya Waht ndi MESH

Netiweki ya maukonde ndi "network yopanda zingwe", ndi netiweki ya "multi-hop", yopangidwa kuchokera ku netiweki ya ad hoc, ndi imodzi mwa njira zazikulu zothetsera vuto la "makilomita omaliza". Pakusintha kwa netiweki ya m'badwo wotsatira, maukonde opanda zingwe ndi ukadaulo wofunikira kwambiri. Maukonde opanda zingwe amatha kulumikizana mogwirizana ndi maukonde ena, ndipo ndi kapangidwe ka maukonde kamphamvu komwe kangathe kukulitsidwa nthawi zonse, ndipo zida zilizonse ziwiri zimatha kusunga kulumikizana kwa maukonde opanda zingwe.

Mkhalidwe wamba

Ndi makhalidwe a kulumikizana kwa ma multi-hop ndi topology ya Mesh, netiweki ya ma waya opanda zingwe yasanduka yankho lothandiza pa ma netiweki osiyanasiyana opanda zingwe monga netiweki yapakhomo ya broadband, netiweki ya anthu ammudzi, netiweki yamakampani ndi netiweki ya m'mizinda. Ma router a Wireless Mesh amapanga ma netiweki a AD hoc kudzera mu kulumikizana kwa ma multi-hop, komwe kumapereka kudalirika kwakukulu, kufalikira kwa ntchito zambiri komanso mtengo wotsika wapatsogolo wa netiweki ya WMN. WMN imalandira makhalidwe ambiri a ma netiweki a AD hoc opanda zingwe, koma pali kusiyana kwina. Kumbali imodzi, mosiyana ndi kuyenda kwa ma node a netiweki a Ad Hoc opanda zingwe, malo a ma router a Mesh opanda zingwe nthawi zambiri amakhala okhazikika. Kumbali ina, poyerekeza ndi ma netiweki a Ad Hoc opanda zingwe omwe ali ndi mphamvu zochepa, ma router a Mesh opanda zingwe nthawi zambiri amakhala ndi magetsi okhazikika. Kuphatikiza apo, WMN imasiyananso ndi ma netiweki a sensor opanda zingwe, ndipo nthawi zambiri zimaganiziridwa kuti njira yamalonda pakati pa ma router a Mesh opanda zingwe ndi yokhazikika, yofanana kwambiri ndi netiweki wamba yofikira kapena netiweki ya campus. Chifukwa chake, WMN imatha kugwira ntchito ngati netiweki yotumizira ndi ntchito zokhazikika, monga netiweki yachikhalidwe. Ikagwiritsidwa ntchito kwakanthawi pantchito zazifupi, WMNS nthawi zambiri imatha kugwira ntchito ngati ma netiweki achikhalidwe a AD hoc.

Kapangidwe ka WMN kali ndi zinthu zitatu zosiyana za netiweki yopanda zingwe: ma rauta a chipata (ma rauta okhala ndi mphamvu zolowera/mlatho), ma rauta a Mesh (malo olowera), ndi makasitomala a Mesh (oyenda kapena ena). Kasitomala wa Mesh amalumikizidwa ku rauta ya Mesh yopanda zingwe kudzera mu kulumikizana kwa waya, ndipo rauta ya Mesh yopanda zingwe imapanga netiweki yolumikizira yokhazikika mu mawonekedwe a kulumikizana kwa ma hop ambiri. Mu kapangidwe ka netiweki ka WMN, rauta iliyonse ya Mesh ingagwiritsidwe ntchito ngati kutumiza deta kwa ma rauta ena a Mesh, ndipo ma rauta ena a Mesh alinso ndi mphamvu yowonjezera ya ma gateway a pa intaneti. Rauta ya gateway Mesh imapititsa patsogolo magalimoto pakati pa WMN ndi intaneti kudzera pa ulalo wa waya wothamanga kwambiri. Kapangidwe ka netiweki ka WMN katha kuonedwa kuti kali ndi ndege ziwiri, momwe ndege yolowera imapereka kulumikizana kwa netiweki kwa makasitomala a Mesh, ndi ntchito zotumizirana ma relay pakati pa ma rauta a Mesh. Pogwiritsa ntchito kwambiri ukadaulo wapaintaneti wopanda zingwe mu WMN, kapangidwe ka netiweki kopangidwa ndi WMN kwakhala kotchuka kwambiri.

HUANET ikhoza kupereka Huawei dual band EG8146X5 WIFI6 Mesh onu.

Ndondomeko ya maukonde a MESH

Mu networking ya Mesh, zinthu monga kusokoneza njira, kusankha nambala ya hop ndi kusankha ma frequency ziyenera kuganiziridwa mokwanira. Gawoli likutenga WLANMESH kutengera 802.11s ngati chitsanzo chowunikira njira zosiyanasiyana zolumikizirana. Zotsatirazi zikufotokoza njira zolumikizirana za single-frequency ndi dual-frequency ndi magwiridwe antchito awo.

Ma network a single frequency MESH

Njira yolumikizirana ya ma frequency amodzi imagwiritsidwa ntchito makamaka m'malo omwe zida ndi zinthu zama frequency zili zochepa. Imagawidwa m'ma single-frequency single-hop ndi single-frequency multi-hop. Mu single-frequency networking, malo onse olumikizirana opanda zingwe a Mesh AP ndi malo olumikizirana a waya a Root AP amagwira ntchito mu frequency band yomweyo. Monga momwe zasonyezedwera pa Chithunzi 1, channel 802.11b/g pa 2.4GHz ingagwiritsidwe ntchito polumikizira ndi kubweza. Malinga ndi malo osiyanasiyana olumikizirana a channel panthawi yogwiritsira ntchito malonda ndi netiweki, njira yomwe imagwiritsidwa ntchito pakati pa ma hops ikhoza kukhala njira yodziyimira payokha yopanda kusokoneza, kapena pakhoza kukhala njira ina yolumikizirana (yambiri yomalizayi ili m'malo enieni). Pankhaniyi, chifukwa cha kusokonezana pakati pa ma node oyandikana nawo, ma node onse sangalandire kapena kutumiza nthawi imodzi, ndipo njira ya MAC ya CSMA/CA iyenera kugwiritsidwa ntchito polumikizana mu multi-hop range. Ndi kuwonjezeka kwa chiwerengero cha ma hop, bandwidth yomwe imaperekedwa ku Mesh AP iliyonse idzachepa kwambiri, ndipo magwiridwe antchito enieni a netiweki ya ma frequency amodzi adzakhala ochepa kwambiri.

Maukonde a ma MESH afupiafupi

Mu network ya ma band awiri, node iliyonse imagwiritsa ntchito ma frequency band awiri osiyana pa backpass ndi access. Mwachitsanzo, ntchito yolumikizira yapafupi imagwiritsa ntchito njira ya 2.4GHz 802.1lb/g, ndipo backbone Mesh backpass network imagwiritsa ntchito njira ya 5.8GHz 802.11a popanda kusokoneza. Mwanjira imeneyi, Mesh AP iliyonse imatha kugwira ntchito ya backpass ndi forward pamene ikutumikira ogwiritsa ntchito access yapafupi. Poyerekeza ndi single frequency network, dual frequency network imathetsa vuto la kusokoneza channel la back transmission ndi access, ndipo imawongolera kwambiri magwiridwe antchito a network. Komabe, m'malo enieni komanso pa network yayikulu, chifukwa frequency band yomweyo imagwiritsidwa ntchito pakati pa backhaul links, palibe chitsimikizo kuti palibe kusokoneza pakati pa ma channel. Chifukwa chake, ndi kuwonjezeka kwa hop count, bandwidth yomwe imaperekedwa ku Mesh AP iliyonse imakonda kuchepa, ndipo Mesh AP yomwe ili kutali ndi Root AP idzakhala pamavuto pakupeza njira. Chifukwa chake, hop count ya dual-band network iyenera kukhazikitsidwa mosamala.