GSM Base Station Frame timing offset

Archived from groups: alt.cellular.gsm (More info?)

master@intelligencia.com wrote in news:1111505985.259305.202850
@o13g2000cwo.googlegroups.com:

> Do nearby base station cells in a GSM network have exactly the same
> frame timing or do they offset their frame times from one another?

Thay *can* but this is not compulsory. Is is although recomended to
implement the forthcoming interference cancellation algorithms.

> Also do different sectors in the same base station cell offset their
> frame timing from one another?

No, in that case they're all synchronised, thanks to the base station's
master clock.

> I assume that a mobile may handoff frome one sector to another sector
> in the same base station cell. Is this correct?

This is correct. They even can handoff within one sector (intracell HO).

> Could you point me to a reference?

http://www.3gamericas.org/PDFs/saic_paper_sept2003.pdf

> Thanks

You're welcome.


--
Cheers,

Olivier

Archived from groups: alt.cellular.gsm (More info?)

ChaosThyre81 <ChaosThyre81.1mhq35@news.cellbanter.com> wrote in
news:ChaosThyre81.1mhq35@news.cellbanter.com:

> Hmm, the sites not workin' anymore?

Unfortunately the white paper section of 3G America's website seems to be
down.

None of the links listed on the WP home page
http://www.3gamericas.org/English/ [...] index.cfm?
archive=1 are available. Hope it will soon be fixed.

Here is a HTML version from Google's cache : http://minilien.com/?7KS5kzHwrA
Don't trust the figures, their make up is irrelevant (synchronized frames are
shown... as is they were not always synchronized on the bottom of figure 1).


--
Cheers,

Olivier