- This topic has 27 replies, 1 voice, and was last updated 4 years, 2 months ago by Ayat.
6th October 2009 at 16:09 #59062EricGuest
Can any help me why there are some time RLCthroughput is higher than LLC throughput .6th October 2009 at 17:50 #59063PixGuest
In the RLC throughput, are you taking into account the retransmissions or only the useful data ?
Could you share what kind of values you see ?6th October 2009 at 19:53 #59064ericGuest
The values are for example throughput on RLC is 56kbit/s and LLC is 52kbit/s but some times for instance is viseversa LLC throughput is higher than RLC and indicator for throughput been checked it is really for me not clear to say it count retransmission but any way what is the real throughput in order to make EDGE dimensioning if it is possible give me a help7th October 2009 at 06:44 #59065PixGuest
For EDGE dimensionig, you should actually start from the Downlink RLC throughput required by users, on Air interface + the amount of EDGE users. That is your initial assumption. For example, as a EDGE user, I would want to get at least 130kb/s most of the time.
And in average, you can assume there are 1.5 users at the same time in one cell. So you need : 6 or 7 PDCH with a throughput in MCS9, etc etc
From this, you will deduce:
1/ number of required TS & TRX
2/ capacity required on Abis
3/ capacity required in PCU (MFS in ALU)
4/ capacity required in Ater PS & Gb interface22nd April 2010 at 13:00 #59066deep_kGuest
need a refresh
could you guys help me with diffrence b/w RLC throughput and LLC throughput.22nd April 2010 at 18:31 #59067PixGuest
LLC is a big frame (max 1500 bytes)
RLC is a small block that contains just one segment of a LLC frame.
Each time one LLC frame goes through the PCU, it is segmented into smaller RLC blocks.
Differences between both throughputs come from the RLC headers and RLC retransmissions (if they are included)
pix24th April 2010 at 08:23 #59068deep_kGuest
am i reading the model correct:
is the order correct ?
rgrds24th April 2010 at 10:20 #59069pixGuest
…the order is not correct.
layer 1 is physical, etc
where does your ip layer come from ?15th September 2010 at 07:04 #59070nameGuest
can anybody like to share some sort of notes on EDGE/GPRS dimensioning wiht me29th December 2010 at 13:36 #59071Edge userGuest
What about SNDCP, what’s the difference between SNDCP and RLC/LLC?30th December 2010 at 09:49 #59072Vikas SehrawatGuest
Subnetwork Dependent Convergence Protocol:-
.Multiplexer/demultiplexer for different network layer entities onto LLC layer
.Compression of protocol control information (e.g. TCP/IP header)
.Compression of data content (if used)
.Segmentation/de-segmentation of data to/from LLC layer
Logical Link Control (LLC) Layer:-
.Reliable logical connection between SGSN and MS
.Independent of underlying radio interface protocols10th April 2012 at 06:33 #59073Shakeel KhanGuest
what is RLC? abbrevation of RLC, Definition and full detail of RLC??? Plz any one help me.13th December 2012 at 10:14 #59074MonjurGuest
Difference between LLC/RLC/TBF/PDCH throughput????13th December 2012 at 22:10 #59075pixGuest
you should re-read the whole topic, all the answers are there.5th February 2013 at 12:29 #59076BryanGuest
Based on the trend of the discussion, does it mean that the RLC Throughput reflects more of the user experience compared to LLC Throughput?