Is there any 3GPP spec in which intra eNB handover is given?

Hello Experts.

Is there any 3GPP spec in which intra eNB handover is given?

Where can I see this flow?

3GPP does not define any call flow for intra base station.

Vendor do follow their internal api based signalling to execute handover.

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From 3GPP point of view Handover is between 2 cells, cells can be inter / Intra eNB.

Intra eNB HO is specific to vendor implementation.

For example some vendor does “path switch” request similar to X2, some vendors does not required to do.