Can we do Carrier Aggregation between two different vendors?

RAN
1

Dear All,
Can we do Carrier aggregation between two different vendors?
Like Ericsson and Huawei?

2

I would love to know this two.

Been wondering if I can do so for Huawei and ZTE.

3

I don’t recall this being possible.
Some vendors have Inter eNB CA feature but they are proprietary.

4

Interesting question.
Would love to see more answers…

5

This needs time and phase synchronization between the 2 eNodeBs else it doesn’t work.
Also the performance of external scell is not same as that of internal scell.

6

CA needs very strict timing requirements as it works at MAC level (millisecond level).
Because of this, generally CA is implemented for cells within a eNodeB.
Dual connectivity is much better option if it is across different vendors or eNodeBs

7

Honest question : is it doable - from implementation perspective , to integrate cells belonging to different gNb - different vendors?
Would scheduling be a concern?

There’s a single entity that coordinate resource allocation on CC1 and CC2.
This would require not only timing alignment between cells. But they should talk over a known protocol.