Background Technology
Kulumikizana kwapano kukukhala kofunika kwambiri pazogwiritsa ntchito panyanja.Kusunga maulumikizidwe ndi kulumikizana panyanja kumapangitsa zombo kuyenda motetezeka ndikuyendetsa vuto lalikulu.
IWAVE 4G LTE Private Network Solutionikhoza kuthetsa vutoli popereka maukonde okhazikika, othamanga kwambiri, komanso otetezeka ku sitimayo.
Tiyeni tiphunzire momwe dongosolo limathandizira pansipa.
1. Nthawi yoyesera: 2018.04.15
2. Cholinga choyesera:
• Kuyesa Kwantchito kwaukadaulo wapaintaneti wachinsinsi wa TD-LTE Wireless m'malo am'madzi
• Kutsimikizira kufalikira kwa ma waya a Integrated base station (PATRON - A10) ku Ocean
• Ubale pakati pa mtunda wofikira opanda zingwe ndi kutalika kwa kuyikika kwa siteshoni yachinsinsi ya netiweki (PATRON - A10).
• Kodi materminals otsitsa amatani omwe ali m'bwalo pomwe malo oyambira ayikidwa mumlengalenga ndi baluni ya helium?
• Baluni ya helium imayikidwa ndi liwiro la netiweki la chotengera chapansi pa siteshoni yoyambira mumlengalenga.
• Pamene mlongoti wa siteshoni igwedezeka mumlengalenga pamodzi ndi baluni, mphamvu ya mlongoti wa base station pa kuphimba opanda zingwe imatsimikiziridwa.
3. Zida Poyesa:
Chipangizo cha Chipangizo pa Helium Balloon
| TD-LTE opanda zingwe makina ophatikizira achinsinsi (ATRON - A10)*1 |
| Transceiver ya kuwala * 2 |
| 500meters Multimode fiber network chingwe |
| Laputopu * 1 |
| Wopanda zingwe * 1 |
Equipment Inventory pa sitima
| CPE yokwera pamagalimoto amphamvu kwambiri (KNIGHT-V10) * 1 |
| Kupindula kwakukulu kwa 1.8 metres omnidirectional glass fiber antenna * 2 (kuphatikiza chingwe cha chakudya) |
| Network chingwe |
| Laputopu * 1 |
| Wireless rauta |
Kukhazikitsa Complete Test System
1,Kukhazikitsa Base Station
The LTE private network onse mu base station imodzi imayikidwa pa baluni ya helium yomwe ili pamtunda wa makilomita 4 kuchokera kumphepete mwa nyanja.Kutalika kwakukulu kwa baluni ya helium kunali mamita 500.Koma mu mayesowa, kutalika kwake kwenikweni ndi pafupifupi 150m.
Kuyika kwa mlongoti wolunjika pa baluni kukuwonetsedwa mu FIG.2.
Mbali yopingasa ya lobe yaikulu imayang'ana pamwamba pa nyanja.Pan-Tilt imatha kusintha mbali yopingasa ya mlongoti kuti iwonetsetse mayendedwe ndi malo.
2,Network Configuration
Malo opanda zingwe a LTE (Patron - A10) pamabaluni amalumikizidwa ndi netiweki ya fiber optic kudzera pa zingwe za Efaneti, zingwe za fiber optic, ma transceivers a fiber optic, ndi rauta A. Pakadali pano, imalumikizidwa ndi seva ya FTP (laputopu). ) kudzera pa router opanda zingwe B.
3, Kutumiza10watts CPE (Knight-V10)akwera
CPE (Knight-V10) imayikidwa pa bwato la usodzi ndipo mlongoti umayikidwa pamwamba pa cab.Mlongoti woyambirira umayikidwa pamtunda wa mamita 4.5 kuchokera kumtunda wa nyanja ndipo mlongoti wachiwiri ndi mamita 3.5 kuchokera kumtunda wa nyanja.Mtunda pakati pa tinyanga ziwirizi ndi pafupifupi mamita 1.8.
Laputopu yomwe ili m'sitimayo imagwirizana ndi CPE kudzera pa chingwe cha netiweki ndipo imagwirizana ndi seva yakutali ya FTP kudzera pa CPE.Mapulogalamu a FPT a laputopu ndi seva yakutali ya FTP amagwiritsidwa ntchito limodzi poyesa kutsitsa kwa FTP.Pakadali pano, chida chowerengera magalimoto chomwe chili pa laputopu chimatha kujambula kuchuluka kwa anthu pa intaneti komanso kuchuluka kwa magalimoto munthawi yeniyeni.Oyesa ena amagwiritsa ntchito mafoni a m'manja kapena mapepala kuti alumikizane ndi WLAN yomwe ili ndi CPE kuti ayang'ane pa intaneti mu kanyumba, monga kuonera kanema wa pa intaneti kapena kuyimba vidiyo kuti ayese kuthamanga kwa intaneti.
Kukonzekera kwa Base Station
| Pakati pafupipafupi: 575Mhz |
| Bandwidth: 10Mhz |
| Mphamvu zopanda zingwe: 2 * 39.8 dbm |
| Chiŵerengero chapadera cha subframe: 2:5 |
| NC: idapangidwa ngati 8 |
| Mlongoti wa SWR: mlongoti waukulu 1.17, mlongoti wothandizira 1.20 |
Njira yoyesera
Mayeso Yambani
Pa Apr. 13,15:33, bwato la usodzi linali kuyenda, ndipo 17:26 tsiku lomwelo, baluniyo idakwezedwa mpaka kutalika kwa 150meters ndikugwedezeka.Kenako, CPE imalumikizidwa popanda zingwe ndi malo oyambira, ndipo panthawiyi, bwato la nsomba lili kutali ndi siteshoni 33km.
1,Yesani Zomwe zili
Laputopu yomwe ili m'sitimayo ili ndi kutsitsa kwa FPT, ndipo kukula kwa fayilo yomwe mukufuna ndi 30G.Pulogalamu ya BWM yoyikiratu imajambulitsa kuchuluka kwa anthu pa intaneti nthawi yeniyeni ndikulemba zambiri za GPS munthawi yeniyeni kudzera pa foni yam'manja.
Anthu ena ogwira ntchito m’bwato la usodzi amapeza intaneti kudzera pa WIFI, amaonera mavidiyo a pa intaneti ndi kuyimba foni.Kanema wapaintaneti ndi wosalala, ndipo mawu oyimba pavidiyo amamveka bwino.Mayeso onse anali 33km - 57.5 km.
2,Mayeso kujambula tebulo
Pakuyesa, zida zodzaza m'chombo zojambulira GPS, mphamvu ya siginecha ya CPE, kutsitsa kwapakati kwa FTP, ndi zidziwitso zina munthawi yeniyeni.Deta yojambulira deta ili motere (mtengo wamtunda ndi mtunda wa pakati pa sitimayo ndi gombe, mtengo wamtengo wapatali ndi chiwerengero chotsitsa pulogalamu ya BWM).
| Mtunda (km) | 32.4 | 34.2 | 36 | 37.8 | 39.6 | 41.4 | 43.2 | 45 | 46.8 | 48.6 | 50.4 | 52.2 | 54 | 55.8 |
| Mphamvu ya Signal (dbm) | -85 | -83 | -83 | -84 | -85 | -83 | -83 | -90 | -86 | -85 | -86 | -87 | -88 | -89 |
| Mtengo wotsitsa (Mbps) | 10.7 | 15.3 | 16.7 | 16.7 | 2.54 | 5.77 | 1.22 | 11.1 | 11.0 | 4.68 | 5.07 | 6.98 | 11.4 | 1.89 |
3,Kusokoneza kwa Signal
Pa Apr. 13,19:33, chizindikirocho chinasokonezedwa mwadzidzidzi.Chizindikirocho chikasokonezedwa, bwato la usodzi limakhala kumtunda kutali ndi malo oyambira pafupifupi 63km (akuyang'aniridwa).Chizindikirocho chikasokonezedwa, mphamvu ya siginecha ya CPE ndi - 90dbm.Chidziwitso cha GPS pa base: 120.23388888, 34.286944.Flast FTP yodziwika bwino ya GPS: 120.9143155, 34.2194236
4,Kumaliza mayeso.
Pa 15thEpulo, mamembala onse omwe ali m'sitimayo amabwerera kumtunda ndikumaliza mayeso.
Kusanthula kwa Zotsatira za Mayeso
1,Mlingo wopingasa wa tinyanga tating'onoting'ono komanso mayendedwe apanyanja asodzi
Mbali yophimba ya mlongoti ndiyofanana kwambiri ndi njira ya chombo.Kuchokera ku mphamvu ya siginecha ya CPE, zitha kuganiziridwa kuti jitter yamagetsi ndi yaying'ono.Mwanjira iyi, mlongoti wolunjika wa pan-tilt utha kukhutiritsa kwambiri zowunikira panyanja.Pakuyesa, mlongoti wolunjika umakhala ndi ngodya yodula kwambiri ya 10 °.
2,Kujambula kwa FTP
Chithunzi cholondola chikuyimira FTP nthawi yeniyeni yotsitsa, ndipo chidziwitso cha malo a GPS chikuwonetsedwa pamapu.Pakuyesa, pali ma jitter angapo amtundu wa data ndipo ma siginecha m'magawo ambiri ndi abwino.Mulingo wapakati wotsitsa ndi wapamwamba kuposa 2 Mbps, ndipo malo olumikizidwa otayika (63km kutali ndi gombe) ndi 1.4 Mbps.
3,Zotsatira za mayeso a mafoni a m'manja
Kulumikizana kuchokera ku CPE kupita ku netiweki yachinsinsi yopanda zingwe kumatayika, ndipo kanema wapaintaneti wowonedwa ndi wogwira ntchitoyo ndi wosalala kwambiri ndipo alibe nthawi.
4,Kusokoneza kwa Signal
Kutengera malo oyambira ndi makonzedwe a parameter a CPE, mphamvu ya siginecha ya CPE iyenera kukhala pafupifupi - 110dbm pomwe chizindikirocho chasokonezedwa.Komabe, muzotsatira zoyesa, mphamvu ya siginecha ndi - 90dbm.
Pambuyo pakuwunika kwamaguluwo, ndicho chifukwa chachikulu chodziwira kuti mtengo wa NCS sunakhazikitsidwe kumayendedwe akutali kwambiri.Mayeso asanayambe, wogwira ntchitoyo samayika mtengo wa NCS kumalo akutali kwambiri chifukwa malo akutali kwambiri adzakhudza kutsitsa.
Onani chithunzi chotsatirachi:
| Kusintha kwa NCS | Theoretical frequency band ya mlongoti umodzi (20Mhz Base Station) | Theoretical bandwidth ya antennas apawiri (20Mhz Base Station) |
| Kukhazikitsa mu Mayeso awa | 52 Mbps | 110Mbps |
| Kukhazikitsa kwakutali | 25 Mbps | 50 Mbps |
Chidziwitso: NCS imayikidwa kumalo akutali kwambiri pamayesero otsatirawa, ndipo kupititsa patsogolo kwa dongosololi ndi chiwerengero cha ogwiritsa ntchito omwe akugwiritsidwa ntchito akukhudzidwa pamene NCS imayikidwa ku kasinthidwe kosiyana.
Mapeto
Zambiri zoyeserera komanso zokumana nazo zidapezedwa ndi gulu laukadaulo la IWAVE kudzera mukuyesaku.Kuyesaku kumatsimikizira kuthekera kwa netiweki ya TD-LTE opanda zingwe netiweki yachinsinsi m'malo am'madzi komanso mphamvu yolumikizira ma siginecha munyanja.Pakadali pano, foni yam'manja ikafika pa intaneti, liwiro lotsitsa la CPE yamphamvu kwambiri pansi pa mtunda wosiyanasiyana woyenda komanso zomwe ogwiritsa ntchito amapeza.
Malangizo a Zamankhwala
Nthawi yotumiza: Mar-13-2023