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Difference between HSDPA:11 and HSDPA:9?

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By aimetti, Senior Member on 7th December 2011, 12:04 PM
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I have been having constant reception issues on my galaxy nexus in areas that I normally get full service.

Ive tried just about everything to no avail. What I have noticed though is that any time i have a good signal and phone is actually working I am usually on HSDPA:9. Other times when my signal is fluctuating or gone all together its on HSDPA:11 and cycles to UMTS:3.


Does this make sense or am I just imaging it.
 
 
7th December 2011, 09:10 PM |#2  
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From what I'm told, this is normal behavior. The phone will hotswap into HSPA+ mode during data transfers, but then scale back to 3G when there's no data being moved around. I'm told the phone does this to save battery.
6th January 2012, 05:36 PM |#3  
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I Googled to here to look for the answer to the OP's question (Difference between HSDPA:11 and HSDPA:9?), but it seems elusive. Nothing else seems to answer it either.

I speculated that the number after the colon refers to the Category as per en.wikipedia.org/wiki/High-Speed_Downlink_Packet_Access, but it doesn't seem to fit. I also looked at whether the number after the colon has to do with speed (in Mbit/s), but there's no HSDPA for ~8 (the nearest are 7.2 and 10.1) nor ~11 (nearest are 10.1 and 14.0) and UMTS:3 makes little sense as well.

Anyone?
6th January 2012, 05:45 PM |#4  
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http://www.option.com/Upload/main/Wh...0HSDPA%209.pdf

It's the HSDPA category number. 9 is HSPA, 10, 13 and 14 are HSPA+
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6th January 2012, 06:47 PM |#5  
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Damn. I had assumed that 11 was going to be faster than 9. How misleading.
6th January 2012, 06:50 PM |#6  
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Quote:
Originally Posted by PlanetRaptoR

http://www.option.com/Upload/main/Wh...0HSDPA%209.pdf

It's the HSDPA category number. 9 is HSPA, 10, 13 and 14 are HSPA+

Actually no, you're totally wrong. As hillrider is.
The number represents a different type of general data connection, not every type of HSPA connection. And 9 is not for HSPA, etc; (before 9, it even writes HSDPA clear as crystal). As for 11 it writes HSPA.

So, from what I have noticed so far:
GPRS - 1
UMTS - 3
HSDPA - 9
HSPA - 11
LTE - 13 (? I'm not sure here)

So it's pretty obvious these aren't part of a HSPA table, because of the different technologies listed. They are a part of a general data connection table. Also, it's pretty obvious that they are numbered in ascending order, based on the connection speed. There are probably even more, I don't know exactly.
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6th January 2012, 07:12 PM |#7  
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If you read something else here I misread.

I have seen UMTS:3, HSDPA:9, HSPA:11.

I would be pissed if the numbers actually meant HSPA categories because I think it would mean my provider is lying when they say they provide HSPA+. For that I'd need to see HSPA:13 and I never have.
Last edited by sishgupta; 6th January 2012 at 07:19 PM.
6th January 2012, 07:25 PM |#8  
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Quote:
Originally Posted by sishgupta

If you read something else here I misread.

I have seen UMTS:3, HSDPA:9, HSPA:11.

I would be pissed if the numbers actually meant HSPA categories because I think it would mean my provider is lying when they say they provide HSPA+. For that I'd need to see HSPA:13 and I never have.

HSDPA is in the DOWNLINK
HSPA means HSDPA + HSUPA with HSUPA meaning data in the UPLINK
6th January 2012, 07:33 PM |#9  
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Quote:
Originally Posted by winwiz

HSDPA is in the DOWNLINK
HSPA means HSDPA + HSUPA with HSUPA meaning data in the UPLINK

Hmm yeah that makes sense. I should have known that. I'm not sure why I got confused there. Thanks
6th January 2012, 07:37 PM |#10  
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How do we check this ish?

Sent from a yakju GSGN
6th January 2012, 07:38 PM |#11  
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Quote:

Difference between HSDPA:11 and HSDPA:9?

Basic math ..... (HSDPA:11)-(HSPDA:9) = 2
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