Best feature/solution for very high congested cells

Please suggest , Best solutions for Very Loaded cells in LTE like:

  • Split
  • Massive Mimo
  • CA
  • MLB
  • Band expansion
  • 4T4R

Any good feature/solution for very high congested cells.
Huawei vendor.

Massive is a good solution only if the other criteria achieved number of users and throughput.

MLB is the first priority only if you have one layer congested.

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congested cells, think about MU-MIMO, and some feature that’s belong to scheduling like DLSCHSWITCH=DlPacketLenAwareSchSw-1

and do trail also for CQIAdjustment parameters

Dear Bro,
Sorry for delay, here are the suggested solution for LTE.
Features:

  1. MLB is fastest to deploy and very effective solution to Load shift based on High PRB Utilizated or Users num.Do you have 2nd carrier ?
  2. Carrier Aggregation : It will help to improve end user Throughput only for CA supported UE.
  3. Massive MIMO - Significant improve Capacity/Throughput/Coverage but it is cost effective that Antenna will replaced.
  4. Band Expansion - Increase Bandwidth from 10 to 15Mhz,Improve Capacity,Increase Throughput but reduce Coverage and solved Congestion.
  5. Split - Cell split improve coverage,Capacity increase but Interference increase.
  6. 4T4R - Coverage and Capacity improve,Cost effective.