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PDCCH Power Enhanced Switch MO: CellPdcchAlgo/Parameter ID: PdcchPowerEnhancedSwitch/Parameter Name: PDCCH Power Enhanced Switch
Meaning
Indicates whether to enable enhanced PDCCH power control. If this switch is turned on, the eNodeB selects app ropriate PDCCH transmit power based on channel quality to increase PDCCH capacity. This parameter is valid only for FDD, no t for TDD.
Impact on Radio If this switch is turned on, the eNodeB selects a lower aggregation level and increases the transmit power to ensure e nsure the PDCCH Network demodulation performance, allow the PDCCH to supp ort more Performance UEs, and increase the uplink and downlink throughput.
If this switch is turned off, the eNodeB selects a higher aggregation level and the operator needs to configure the transmit power manually. This results in the opposite effects.
PDCCH Capacity Improve Switch MO Parameter ID
CellPdcchAlgo PdcchCapacityImproveSwitch
Parameter Name PDCCH Capacity Improve Switch Impact on Radio For LTE FDD networks, if this parameter is set to ON(On), (1) the initial value for closed-loop adjustment on PDCCH aggregation Network level decreases and PDCCH capacity increases, a nd therefore cell Performance throughput increases; (2) the CCE allocation success rate increases, and therefore cell throughput increases. For LTE TDD network, if this parameter is set to ON(On), the CCE allocation success rate increases, and therefore cell throughput increases.
PDCCH Symbol Number Adjust Switch MO Parameter ID
CellPdcchAlgo PdcchSymNumSwitch
Parameter Name PDCCH Symbol Number Adjust Switch
Meaning
Indicates whether to enable dynamic adjustment on the number of orthogonal frequency division multiplexing (OFDM) symbols occupied by the physical downlink control channel (PDCCH). If this parameter is set to OFF(Off), the number of OFDM symbols occupied by the PDCCH is fixed and cannot be dynamically adjusted. If this parameter is set to ON(On), the number of OFDM symbols occupied by the PDCCH is dynamically adjusted based on the required number of PDCCH control channel elements (CCEs). The OFDM symbol adjustment range can be determined by referring to the MML reference of the InitPdcchSymNum parameter. If this parameter is set to ECFIADAPTIONON(Enhanced CFI Adaption On), the number of OFDM symbols occupied by the PDCCH is dynamically adjusted based on the cell downlink throughput, and the adjustment performance is the best among the three methods. The OFDM symbol adjustment range can be determined by referring to the MML reference of the InitPdcchSymNum parameter.
Impact on Radio If this parameter is set to OFF, the number of OFDM symbols occupied by the PDCCH is fixed and cannot be dynamically Network adjusted. If this parameter is set to ON, the number of OFDM Performance symbols occupied by the PDCCH is dynamically adjusted based on the number of required CCEs, and therefore cell downlink throughput increases. If this parameter is set to ECFIADAPTIONON, the dynamic adjustment of the number of OFDM symbols occupied by the PDCCH considers cell downlink throughput, and therefore can reach higher throughput when downlink frequency selective scheduling is enabled.
