5G Mobility Scenarios - Handovers

Mobility
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In a wireless 5G network, when a mobile device (UE) travelling across different sites, it can be either in connected mobility or Idle mode mobility. Considering the two situation’s 5G mobility scenarios i.e. in Connected Mode Mobility UE does perform handover and in Idle mode mobility UE does cell selection /reselection as shown in below figure.

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When UE doing in connected mode mobility and does handovers, these handovers be following types considering a multi frequency deployment.

  • Blind Handover
  • Coverage Based Intra Frequency Handover
  • Coverage Based Inter Frequency Handover
  • Frequency Priority Based Inter Frequency Handover

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  • Connected Mode Mobility: In this mode, the UE is actively communicating with the network and performs handovers to maintain connectivity as it moves between different cell sites.
  • Idle Mode Mobility: In this mode, the UE is not actively communicating and performs cell selection/reselection based on network conditions.
  • Handover Types:
  • Blind Handover: The UE directly switches to a new cell without prior signaling, which can lead to service interruptions.
  • Coverage Based Intra Frequency Handover: The UE switches to a cell on the same frequency band due to better coverage.
  • Coverage Based Inter Frequency Handover: The UE switches to a cell on a different frequency band due to better coverage.
  • Frequency Priority Based Inter Frequency Handover: The UE switches to a cell on a different frequency band based on frequency priorities defined by the network operator.