DMR ndi chiyani
Digital Mobile Radio (DMR) ndi mulingo wapadziko lonse lapansi wamawayilesi anjira ziwiri omwe amatumiza mawu ndi data pamawayilesi omwe siagulu. European Telecommunications Standards Institute (ETSI) idapanga muyezo mu 2005 kuti athane ndi misika yamalonda. Muyezowu wasinthidwa kangapo kuyambira pomwe unalengedwa.
Kodi Ad-hoc Network System ndi chiyani
Netiweki ya ad hoc ndi netiweki yosakhalitsa, yopanda zingwe yomwe imalola zida kuti zilumikizane ndikulumikizana popanda rauta yapakati kapena seva.Imadziwikanso kuti mobile ad hoc network (MANET), ndi njira yodzipangira yokha ya zida zam'manja zomwe zimatha kulumikizana popanda. kudalira maziko omwe analipo kale kapena utsogoleri wapakati. Netiweki imapangidwa mwamphamvu pomwe zida zimabwera mosiyanasiyana, kuwalola kuti azisinthana ndi anzawo.
DMR ndiyotchuka kwambiri mawailesi am'manja pamawu awiri omvera. Patebulo lotsatirali, Pankhani ya njira zolumikizirana, tidafanizira pakati pa IWAVE Ad-hoc network system ndi DMR.
| IWAVE Ad-hoc System | DMR | |
| Ulalo wamawaya | Posafunikira | Chofunikira |
| Yambitsani kuyimba | Mwachangu monga ma walkie-talkies wamba | Kuitana kumayambitsidwa ndi njira yowongolera |
| Anti-zowononga luso | Wamphamvu 1. Dongosololi silidalira ulalo uliwonse wamawaya kapena zida zokhazikika. 2. Kulumikizana pakati pa chipangizo chilichonse ndi opanda zingwe. 3. Chida chilichonse chimayendetsedwa ndi batri yomangidwa. Choncho, dongosolo lonse lili ndi mphamvu zotsutsa zowonongeka | Zofooka 1. Zida za hardware ndizovuta 2. Kugwira ntchito kwadongosolo kumadalira maulalo a waya. 3. Zomangamanga zikawonongeka ndi tsoka. Dongosolo siligwira ntchito bwino. kotero, mphamvu yake yolimbana ndi kuwonongeka ndi yofooka. |
| Sinthani | 1. Palibe chifukwa chosinthira mawaya 2. Amatenga mpweya opanda zingwe lophimba | Kusintha ndikofunikira |
| Kufotokozera | Chifukwa malo oyambira amatengera ukadaulo wowonera magalasi, rf imawotchedwa. Chifukwa chake, dongosololi limakhala ndi kuphimba kwabwinoko ndi mawanga ochepa akhungu | Malo akhungu ambiri |
| Networkless ad hoc network | Inde | Inde |
| Kukulitsa mphamvu | Wonjezerani mphamvu popanda malire | Kukula pang'ono: Kuchepetsa pafupipafupi kapena zinthu zina |
| Zida zamagetsi | Kapangidwe kosavuta, kulemera kopepuka ndi kukula kochepa | Mapangidwe ovuta komanso kukula kwakukulu |
| Zomverera | -126dBm | DMR: -120dbm |
| Hot zosunga zobwezeretsera | Masiteshoni angapo atha kugwiritsidwa ntchito limodzi posunga zosunga zobwezeretsera | Osathandizira mwachindunji kuchita zosunga zobwezeretsera zotentha |
| Kutumiza mwachangu | Inde | No |
Nthawi yotumiza: Aug-13-2024
