I have doubt in which conditions UE initiated and Network initiated dedicated bearer can be estabilished?

Question

I have doubt in which conditions User initiated and Network initiated dedicated bearer can be established?
Any real example in LTE call.

Answer 1

I think it could be a situation ... Suppose UE is attached have default bearer only. Now want to make votle call then first it needs to have QCI 5 dedicated bearer for SIP signalling. For this UE needs to make request to MME to create the dedicated bearer. This will be UE initiated bearer.

After that UE can send SIP msg to IMS server and can send SIP signalling for Volte call. Now IMS server needs to make request for dedicated bearer for volte call to core n/w. This will be the n/w initiated dedicated bearer.

Comments

Is it just your thoughts or you have any reference ?
If you have any reference then please share.

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NW initiated bearers can be established on UE Request as well.So what happens If UE wants to modify any TFTs for the established Default Bearer it will send BearereResourceAllocationRequest. Once NW Receives it, it can go for ActivatededicatedEPSBearer Context to establish dedicated bearers for already established default bearers.Also NW gets the EPS bearer identity from BearerReourceAllocation Request message.