top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration

Facebook Login
Site Registration

Can someone explain what is VRB in LTE, how it is different than PRB and where shall we use terms VRB and PRB ?

+2 votes
644 views
Can someone explain what is VRB in LTE, how it is different than PRB and where shall we use terms VRB and PRB ?
posted Dec 1, 2015 by anonymous

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

2 Answers

+1 vote

Hi,

As i know VRB and PRB is just a term to differentiate the RB in MAC and PHY. Like in Linux we have virtual address and physical address , only thing in Linux virtual address can map to any of physical address in RAM ,the same way here one VRB can map to any one of available PRB. If LTE has 25 Rb's then there will be 25 VRB and 25 PRB. If mac scheduler 5 RB to one UE then those 5 VRb can be mapped direct to PRB or based on RAT(resource allocate type) frequency domain scheduler will map. say e.g if RAT is 2 then direct mapping between VRB and PRB ,will happen like 1 - 1,2-2 .3-3.4-4,5-5. If RAT is bit mapped then it can be 1-1,2-4,3-5,4-6,5-8.

answer May 18, 2016 by Jaganathan
0 votes
answer May 18, 2016 by Bhaskar Kalaria
Similar Questions
+1 vote

Since eNodeB can have information about channel quality with finer granularity through selected
subband CQI, wouldn’t it make sense to have MCSs defined on a per‐RB (or a group of RB) basis rather
than a single MCS per UE across all allocated RBs for a codeword?

+1 vote

Can we have a live scenario wherein PCRF gets multiple attach request(CCR-I) where only the Framed-IP-Address and Session-Id are different but Subscriber-Id information and APN remain same? From network point of view, what can be the use case for this?

Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...