what is the function of GPS in WIMAX BTS

[arban]

Hi,

I am curious, why do we need to put GPS at WIMAX BTS?

I dont think we have to do the same on either 2G/3G BTS.

Pls help me to answer my curiousity.

THanks.:o

[desi_larka]

Wimax is a TDD based system and it need freq and phase sync for the right timing of the UL & DL slot. The BTS can derive the clock out of the GPS sync and use it for air interface timimgs

[proy1_10]

Wimax use frequency pattern from GPS.
It's something like a timestamp

[zeuscane]

This documents it may help you.

B.R.
zeuscane

[tmsafeer]

dear friend
the gps antenna are using for time correction the following link are showing like that product

GPS Based Timing and Synchronization Solutions for WiMAX - Wireless Design & Development (http://www.wirelessdesignmag.com/ShowPR.aspx?PUBCODE=055&ACCT=0031974&ISSUE=1006&RELTYPE=wtf&PRODCODE=U0100&PRODLETT=A&CommonCount=0)

[mimoX]

TDD system (Wimax) requires GPS for synchronization.

[proy1_10]

Yes, but only needed if more than one CPE per BTS using the same frequency or overlaps into the network in the same frequency