PRB terminology

What do you mean by SRB here?

Scheduling Resource Blocks.

Yes, correct.

Never heard such definition…

This is a new one.
Not sure if this is something proprietary, never read it in the specs.

SRB is terminology used in Ericsson.
It’s not standard term.

I checked in Ericsson LTE air interface guide not able to find such terminology.
Is it related to some feature or parameter?

Try searching Scheduling Block.

Look for this parameter:

And counters:

SRB is the signaling that carry messages signaling that you can calculate in major KPIs (RRC, NAS…).
Note: there is SRB0, SRB1 & SRB2 in LTE.
In 5G, there is the same + SRB3 (new one).

SRB concept there is Ericsson system for RRC & NAS signaling.

Yes SRB is signalling Radio Bearer agreed.
The thing that I was speaking about was Scheduling Resource Blocks.

Lets keep same understanding SRB is Signalling Radio Bearer only.


A scheduling block consists of two RBs adjacent in time and with the same subcarriers.
A scheduling block is the smallest downlink unit that can be scheduled to UE.

Yes its agree scheduling block is smallest allocated unit ie PRB.
It’s not SRB.
At least 1 PRB to UE.

So we were actually confusing between SRB and SB here?

Yes, I was talking about this.

It’s all clear now, thanks. :slight_smile:

Hello Experts,

I’ve added this information here Radio Physical Resources :wink: