Handover

Key Points

• Transfers an active session between service points
• Used in mobile, satellite, and wireless systems
• Supports continuity during movement or reallocation
• Can be triggered by coverage or load changes
• Constraints include timing, signal quality, session continuity, and coordination between old and new serving points
• Failure modes include dropped sessions, delayed transitions, signaling errors, and instability

Definition

Handover is the transfer of an active connection or service session from one node, cell, beam, or coverage area to another. It supports continuity during movement or reallocation.

Concept

Handover is a bridge concept that combines connection management with continuity of service. It exists to move active sessions between coverage areas or network nodes without unnecessary interruption. Handover is used in mobile networks, satellite systems, and wireless services. It can be driven by mobility, coverage changes, or load management.

Explainer

Handover reassigns an active session to a new serving point so communication can continue as coverage, movement, or resource conditions change. It is used in mobile networks, satellite services, and wireless systems. Constraints include timing, signal quality, session continuity, and the need to coordinate the old and new serving points during transition. Failure modes include dropped sessions, delayed transitions, signaling errors, and instability when the new path is not ready. Tradeoffs involve continuous service versus coordination complexity, fast switching versus higher signaling overhead, and broad mobility support versus more difficult network control. Handover matters because many communication services must remain active while the serving path changes. Cross-industry relevance is strong in telecommunications, mobility, and satellite communications.