For NSA dual connectivity setting for attach request

Specs & Protocol Testing
1

Hi Experts,
For NSA should be dual connectivity with NR set to “support” on both UE and ms network capability in Attach request?

2

DCNR = 1 on ATTACH REQUEST, RestricDCNR = 0 or absent on ATTACH ACCEPT.

3

DCNR = 1 like in this picture:

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image730×414 102 KB

4

One more bit in attach request.
Dual connectivity of E-UTRA with NR capability: Mobile station support dual connectivity as supported.

5

Ok, so answer is: if Ms Network capability exist in Attach request msg (because is optional), both, UE and MS Network capability should have positive bit for dual connectivity.

6

But if there wasn’t daul connectivity with 5G NR (just LTE) so the UE don’t know where SSB located so RRC message setup would be fail no?

7

Yes, and I see rrcconnectionreestablishment rejected.

8

Yup … I know just Im asking you to make your understandings very well :slightly_smiling_face: