Question

Which NE stores the details of Default and Dedicated bearer details for all the UE's?

Question:1:- For example, UE1 has 1 default and 3 dedicated bearers. Which NE stores this information and based on what parameters, the bearers are mapped?

Question:2:- When UE is accessing gmail.com, based on what parameters the bearer will be selected, either Default or Dedicated for gmail.com will be decided?

Answer 1

Hi kumar,

Q1:

ALL NE will have the context in the form of ERAB regarding bearers in LTE.Because it has to forward the data in the particular bearer to other entity. say PGW - SGW - ENB. ALL NE will have all UE's each bearer information.

Q2:
Each bearer has its own characteristics called QCI, There are 9 QCI in LTE for different different service , if you are using voice call then it needs QCI 5 bearer , like wise all other service need different bearers. For GMAIL default bearer is sufficient to serve because it comes under web browsing.

Comments

So not required dedicated bearer, multiple session also is it used default bearer

Answer 2

Just to add on what Jaganathan mentioned , other nodes of LTE networks such as PCRF and PCEF involve in QoS level control and enforcement and also plays important role during establishment, modification and termination of a bearer.