Hi Experts,
Anyone looking into eran16.1 params of Huawei?
I am finding weird params there like this one: MassiveMIMOMUBFPairingRule.
Huawei claims that base don this switch they will paid the UEs for MU-MIMO based on low correlation or not.
But if low correlation is not taken into account what is the principle to pair the UEs for MU-MIMO beamforming?
This param applies to both FDD and TDD.
What other OEMs (like Nokia for example) have a configurable threshold for correlation.
For example if correlation is lower than 0.3 then UEs can be paired for MU-MIMO.
And this 0.3 is configurable by MNOs.
Could be 0.4 or 0.2 or any other value between 0 and 1.
You can set without correlation but that means all Ues are paired (regardless of correlation) and will be huge SINR degradation between beams leading to reduced system capacity.
But this sounds like a suicide solution. No idea why Huawei allows this option…
Huawei, typically, has a high degree of freedom to optimize the network via regular parameters and switches, different from the others and their hardcoded or constant values only changed by vendor staff
This also allow you to make bad optimizations
I think correlation and UE pairing has nothing to do with high SINR of the 2 UEs.
And it is not just 2 UEs, can be up to 8 UEs in Huawei for pairing in NR.
8 UEs meaning 16 PDSCH layers for 8 paired UEs in teh ideal case.
Of course in reality we will seldom see this, but it is common to see 3-4 UEs paired in 6-8 PDSCH layers.