H12-321 – Wlan-Cewa (Huawei Certified Network Professional - CEWA)

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  An AP's transmit power determines its radio coverage area. APs with higher power have larger coverage areas.
  

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  The global radio calibration algorithm includes the Dynamic Channel Allocation (DCA) algorithm and Transmit Power Control (IPC) algorithm.
  

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  A traditional method to control the radio power is to set the transmit power to the maximum value to maximize the radio coverage area. However, a high transmit power may cause interference to other wireless devices.
  

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  During dynamic power adjustment, it is necessary to select an optimal power to balance the signal coverage with system capacity.
  
  
  

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  Omnidirectional antenna distributes the signal evenly over a 360-degree omnidirectional area around the center point
  

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  The omnidirectional antenna has a lobe width of 360 degrees horizontally
  

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  The omnidirectional antenna has strong energy gathering ability and the direction of the signal is good.
  

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  The omnidirectional antenna has a lobe width of 360 degrees vertically