4 Carrier HSDPA

Dual Carrier HSDPA is in the 3GPP standards for some time now and in the mid-term we'll probably see it deployed. So where to go with HSPA next? Well, 3GPP RAN discusses 4 Carrier HSDPA spread over different frequency bands. That's for 3GPP Release 10 I suppose. The report from the recent RAN#59 meeting gives some interesting details in chapter 5.4:

• Adjacent and non-adjacent 5 MHz carriers in a single band (e.g. 2.1 GHz)

• Use of several bands. Band combinations suggested: I and VIII (2.1 GHz + 900 MHz, Europe), II and IV (1900 + 1700, US), I and V (2.1 GHz, Europe + 850 US [???])

• MIMO support depending on the capabilities of the UE in a band. This is an interesting as with this sentence it is assumed that a future UE could support MIMO only in some of the bands it supports.

Obviously that's a big new challenge for UE chip designers. While today the mobile can select an operating band and a suitable front-end, using several bands simultaneously will require the parallel use of hardware components. A tricky thing.  Comments from the RF community on this are greatly appreciated.

Nothings written into stone yet (eh, into the standards I mean) but this is where things are likely to go.

Oh, and I learnt of a new company name: Alcatel-Lucent Shanghai Bell. An interesting combination!

Comments

[Ollie]

2100/850 is for Australia/New Zealand/Japan etc. where we had both GSM and CDMA

[Ollie]

BTW, dual carrier will be deployed by Telstra within the year, or maybe a bit later than that. They are doing trials now.

[mobilesociety]

Hi Ollie,

yes Ive seen it in the news this week. So it was time to put the bar
higher again on this blog with quadrupple carrier :-)

Cheers,
Martin

[David Boettger]

Alcatel-Lucent Shanghai Bell might be a new (and clumsy) official name, but Shanghai Bell has always been an Alcatel protege.