Hello Experts.
TDD has been widely deployed as a capacity layer.
And FDD to TDD Carrier Aggregation is commonly used to utilize the DL capacity of TDD.
In such intra-mode deployments, FDD is always the “PCC,” and I have seen CA up to 5CC in our network.
However, if TDD is selected as the “PCC,” it can only have other TDD carriers as potential “SCC.”
Are there any commercial deployments of TDD to FDD Carrier Aggregation, considering the limited UL coverage of TDD?
To my knowledge, Ericsson has not provided this yet.
Are Huawei and Nokia offering it?
If so, what has been the experience?