150 Mbps spoje od Ubiquiti

14. srpna 2009 v 16:38 | Martin |  Telekomunikace
Po představení jednotek Bullet M společnost Ubiquiti dále rozšířila sortiment prvků řady series M a k nim i MIMO antén AirMAX.
Nové jednotky využívají technologie časového multiplexu TDMA a 802.11n v provedení MIMO (2x2). Díky těmto technologiím tak jednotky umožňují:

  • Reálnou rychlost až 150 Mbps
  • Nízkou latenci vhodnou pro služby typu VoIP apod.
  • Možnost připojení více než 300 klientů
  • Dlouhý dosah
Nově tak představuje nástupce Nanostation5 v podobě Nanostation M5 s 2x LAN portem, která obsahuje integrovanou anténu MIMO se ziskem 2x 16 dBi. Jednotka má navíc výkonný 400 Mhz procesor a rozšířené paměti - 8 MB flash a 32 MB RAM.


Úplnou novinkou je jednotka Rocket M5, která je přímo určena k montáži na sektorové antény AirMAX vhodné např. pro vytvoření přístupového bodu nebo na směrovou anténu AirMAX se ziskem 30 dBi. S anténami je dodáváno i příslušenství pro připevnění a voděodolné propojení s jednotkou Rocket M.
Novinky budou dostupné 10.9. je však možné si je rezervovat již nyní.
 

6 lidí ohodnotilo tento článek.

Komentáře

1 Dade_Marfi Dade_Marfi | E-mail | 18. srpna 2009 v 8:11 | Reagovat

Otazkou je, kdy budou tyto produkty dostupne ? Rad bych je vyzkousel, ale mam pocit, ze se dockam tak za pul roku ? Diky za pripadne info ...

2 Martin Martin | 18. srpna 2009 v 9:05 | Reagovat

Máme potvrzen termín 10.9. Novinky je již možné rezervovat na www.i4wifi.cz

3 Jan Frank Jan Frank | 18. srpna 2009 v 17:37 | Reagovat

Zajimalo by me zda tato norma 802.n je v CR pouzitelna tedy zda je povolene ji volne pouzivat dle CTU a za jakych podminek

4 majak majak | E-mail | Web | 18. srpna 2009 v 19:34 | Reagovat

mna by zaujimalo ci mozem prevadzkovat napriklad bullet m5 v rezime bridge s nejakou 5.8GHz 29dB antenou pretoze niekde som cital ze eirp je 25mW/14dB a to je pre mna velmi malo - potrebujem vyriesit pre sukromne ucely p-t-p spoj na 7km a tieto zariadenia su uplne idealne!

5 Jenya Jenya | 19. srpna 2009 v 9:53 | Reagovat

Kolik kanalu potrebuji tyto zarizeni pro provoz? Pokud dva pro prijem a dva pro vysilani, tak se silne obavam, ze v obvykle zarusenem prostredi, kde stavajici zarizeni funguji jakz takz v ramci jednoho kanalu, budou tyto novinky nepouzitelne. Nebo to tak neni? Pripadne jaka je propustnost pri pouziti jednoho kanalu bez MIMO?

6 Karel Karel | E-mail | 19. srpna 2009 v 12:49 | Reagovat

Zajimalo by mě jak lze dosáhnout reálné propustnosti 150 Mbps když má zařízení 100 Mbps ethernet port.

7 majak majak | E-mail | Web | 19. srpna 2009 v 15:38 | Reagovat

re: Karel
krizenim... staci sa pozriet na ilustracny obrazok a tam to uvidis..

8 Martin Martin | 20. srpna 2009 v 9:04 | Reagovat

[3]: Norma 802.11n je v ČR povolená. Platí stejné podmínky jako pro 802.11a/g

9 Martin Martin | 20. srpna 2009 v 9:07 | Reagovat

[4]: Volte pásmo 5,4 až 5,7 GHz, kde je možné vysílat 1W. Anténu lze použít např WA29-5xP http://www.i4wifi.cz/?cls=stoitem&stiid=353

10 Martin Martin | 20. srpna 2009 v 9:12 | Reagovat

[5]: Udávaná rychlost je za použití 40 MHz kanálu. Volit lze i 20 MHz. Šířka kanálu je sdílená pro vysílání i přijímání.

11 Martin Martin | 20. srpna 2009 v 9:17 | Reagovat

[6]: Etherner je 100 Mbps ale fullduplex, tedy 100/100 (reálně přes 90/90 Mbps). Wifi pouze "halfduplex". Provoz je většinou obousměrný, takže se 150 Mbps na wifi rozdělí a 100 Mbps ethernet je tak dostačující. Omezení na 100 Mbps bude tedy pouze v případě čistě jednosměrného provozu.

12 Moly Moly | 20. srpna 2009 v 17:15 | Reagovat

Zajimalo by me jak maji zvladnute TDMA a jeho presne casove synchro, aby to dobre chodilo v pripade tak levneho zarieni.

13 Jenya Jenya | E-mail | 21. srpna 2009 v 10:27 | Reagovat

[10]: Proc je tedy mutne pouzit dve anteny (napr. Rocket dish duplex), kdyz jak tu tvrdite je te kanal sdileny pro vysilani i prijem? A kdo je vubec Martin? Zastupce prodejce, nebo jen nekdo, kdo se domniva, ze skutecnost je takova, jak pise?

14 Moly Moly | 21. srpna 2009 v 14:34 | Reagovat

Dve anteny, protoze se pouziva vicecestne sireni, tj. vysilaji se dva toky na stejnem kanale, ale do ruznych anten. Na druhe strane se prijmou na obouch antenach ruzne namixovane toky a DSP si re rozebere zase na dva.

15 Moly Moly | 21. srpna 2009 v 14:37 | Reagovat

Jinak pro ty co nemaji poneti co to je MIMO, je dobre kouknout sem : http://en.wikipedia.org/wiki/802.11n

16 Jenya Jenya | E-mail | 21. srpna 2009 v 14:59 | Reagovat

[14]: OK, je to tak, ale jak potom funguje Bullet M5, ktery ma deklarovanou propustnost 100Mbps skrz pouze jednu antenu?

17 Jenya Jenya | E-mail | 21. srpna 2009 v 15:10 | Reagovat

[16]: Parada, z te wiki jsem konecne pochopil jak se to ma s obsazenim kanalu/rychlost.

18 Moly Moly | 22. srpna 2009 v 18:40 | Reagovat

Bullet M5 funguje predpokladam pouze s jednim tokem, ale ta rychlost je brana pri 40MHz kanalu. Protoze tezko lze puzit dva toky do jedne anteny :-)

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