CA band combination not present in UE capability message

Dears, I noted an issue.

When UE report capability msg in LTE, sometimes msg size is large and contain all CA combination.

And other times this message do not contain any CA band combination.

That final issue cause UE use single carrier instead of CA so throughput degraded.

Any solution for that issue?

Vendor is Huawei.

Check that one, can help. “Reception of the UECapabilityEnquiry by the UE” in 3GPP TS 36.331 V13.1.0