Cellular Handoff
Inter-cell handoff sequence between two base stations.
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sequenceDiagram
participant UE as User equipment
participant S as Serving cell (BS1)
participant T as Target cell (BS2)
participant Core as Core network
UE->>S: measurement reports
S->>S: decide handoff
S->>T: handover request
T-->>S: handover ack
S->>UE: handover command
UE->>T: random access + sync
T-->>UE: connected
T->>Core: path-switch request
Core-->>T: path-switch ack
T->>S: release resources