Huawei introduces an advanced multi-frequency beam coordination enhancement for TDD massive MIMO networks
How It Works:
In areas with overlapping NR TDD massive MIMO cells, the gNodeB dynamically distributes UE downlink traffic by evaluating:
PRB usage of the downlink cell
SRS beam load
SRS beam PRB usage
SRS beam interference
This coordination significantly boosts average UE downlink throughput across the network.
Key Technical Dependencies:
Load Balancing Acceleration (MF_BEAM_COORD_LOAD_BAL_ACC_SW) must be active to increase UE transfer volume per cycle, enabling faster inter-cell beam load balancing.
Extended Prediction Using Virtual Grids (MF_BEAM_CO_EXT_PRED_SW) allows the gNodeB to:
Model RSRP of neighboring frequencies
Filter unnecessary neighbors
Trigger A5 measurements for selected neighbors
Collect UE measurement reports within 3 seconds
Connected Mode MLB must be enabled via INTER_FREQ_CONNECTED_MLB_SW in NRCellAlgoSwitch.MlbAlgoSwitch.
Experience-Based Optimization:
When UE-specific downlink spectral efficiency is required:
Enable MF_BEAM_CO_DL_SPCT_EFF_PRED_SW for multi-frequency coordination
For smart carrier selection, use DL_EXP_EVAL_SPCT_EFF_PRED_SW
The difference lies in the hysteresis control:
NRCellMultiFSchCoord.BeamCoordExpEvaluateHyst for beam coordination
NRCellCaMgmtConfig.DlExpEvalHyst for smart carrier selection
Benefits Delivered:
Higher downlink throughput for UEs
Smarter inter-cell load distribution
Enhanced spectral efficiency predictions
Intelligent carrier/beam selection logic
This solution highlights Huawei’s precision-engineered approach to scalable and intelligent traffic steering in dense 5G TDD deployments.
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