2.4G WiFi e sebetsa sehlopheng sa 2.4GHz ka lebelo la ho sebetsa la 2400 ~ 2483.5MHz. Tekanyetso e kholo e lateloang ke IEEE802.11b/g/n e behiloeng ke IEEE (Mokhatlo oa Baenjiniere ba Motlakase le Electronics). Mona ke litekanyetso tsena ka botlalo:
- IEEE802.11 ke LAN e se nang mohala e qapiloeng ke IEEE. E sebelisoa haholo ho rarolla phihlello ea mohala ho basebelisi le liteishene tsa basebelisi liofising tsa LAN le marang-rang a khamphaseng. Tšebeletso e lekanyelitsoe haholo ho fihlella data, ka tekanyo e kholo ea 2Mb / s. Theknoloji ena e siiloe ke nako hobane IEEE802.11 ha e lekane ka lebelo le sebaka sa phetisetso.
- Tekanyetso ea IEEE802.11b, eo hape e tsejoang e le thekenoloji ea wireless fidelity, e sebelisa sehlopha sa machaba sa mahala sa 2.4GHz se laoloang ke machaba bakeng sa katoloso ea tatellano e tobileng, ka bophara ba 83.5MHz le tekanyo e phahameng ea phetisetso ea data ea 11Mbps. Lebelo le phahameng la phetisetso ke limithara tse 300 ka ntle le 100 limithara ka matlung ntle le phihlello ea ka tlung, e leng mokhoa o sebelisoang ka ho fetesisa oa phetisetso ea waelese hona joale.
- IEEE802.11g ke tekanyetso e nyalisitsoeng e ikamahanyang le maemo a tloaelehileng a 802.11b 'me e fana ka litekanyetso tsa phetisetso ea data ea 11Mbps ka motsotsoana ho 2.4GHz. E sebelisa mekhoa ea ntlafatso e kang dual-channel bundling, e ntlafatsang sekhahla sa phetisetso ea mohala ho 108Mbps le ho khona fana ka ts'ebetso ea 'nete ea TCP / IP pakeng tsa 80 le 90Mbps.
- IEEE802.11n e sebelisa theknoloji ea MIMO (multi-in and multi-out) le OFDM (orthogonal frequency division multiplexing), e ka ntlafatsang lebelo la phetisetso ea WLAN ho tloha ho 54Mbps ea hona joale e fanoeng ke 802.11a le 802.11g ho 108Mbps, esita le ho fihlela ho 600Mbps. , 'me e ka tšehetsa phetiso ea lentsoe le video ea boleng bo holimo.
| Papiso ea litekanyetso tsa 802.11b/g/n | |||
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| moloko oa bobeli | moloko oa boraro | Moloko oa bone |
| maemo | IEEE802.11b | IEEE802.11g | IEEE 802.11n |
| mokhoa oa modulation | CCK | BPSK,QP SK,160AM, 64QAM,DBPSK,DQPSK, | BPSK, QPSK, 160AM, 64QAM |
| Mofuta oa khouto | DSSS | OFDM, DSSS | MIMO-OFDM |
| lebelo | 11Mbps | 54Mbps | 600Mbps |
| bandwidth ea mocha | 22MHz | 20MHz | 20,40MHz |
| Letsatsi la tumello | 1999 | 2003 | 2009 |
| sebopeho | Theko e tlase, e tloaelehileng maemo, thekenoloji le lihlahisoa li hodile | Matla a lekanyelitsoeng a tlase tshebediso, nako e telele sebaka sa phetiso, matla matla a ho kenella, a manyane kgaso, lebelo le phahameng | Tlase-e lumellana le 11b / g ha u sebetsa ho 2.4G |
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