Group Handover Message Signaling Overhead Reduction
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Solution Overview
Problem
Existing handover mechanisms in wireless communication systems are inefficient when handling group handovers of user equipment (UEs) served by satellites, as they involve high signaling overhead due to individual handover messages for each UE, leading to congestion and resource inefficiency.
Innovation Solution
Implementing a group handover mechanism where a base station transmits a group handover request and acknowledgment to a target base station, and then sends a group handover message to all UEs, using RRC configuration to facilitate a simultaneous connection to the new base station, reducing signaling overhead and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual handover messages are sent to each UE, then handover reliability is ensured, but signaling overhead increases and system efficiency deteriorates
Solution Approach 1:
The patent merges multiple individual handover messages into a single group handover message that can simultaneously hand over multiple UEs from one base station to another. This combining approach reduces the total number of signaling messages transmitted over the air interface, thereby reducing signaling overhead and improving system efficiency while maintaining handover reliability for all UEs in the group.
2Reliability
If individual handover messages are sent to each UE, then each UE can be handed over reliably, but the handover process becomes slower and productivity decreases
Solution Approach 1:
The patent combines multiple individual handover operations into a single group handover operation. By merging the handover process for multiple UEs into one unified message transmission, the system achieves faster handover execution and improved productivity while ensuring that each UE in the group is reliably handed over to the target base station.
3Loss of energy
If group handover message is transmitted to multiple UEs, then signaling overhead is reduced, but the complexity of managing group handover increases
Solution Approach 1:
The patent segments the group handover message into individual handover information elements, each specifically tailored for a particular UE within the group. This segmentation allows the base station to manage group handover efficiently by organizing UE-specific parameters in a structured manner, reducing the complexity of handling large-scale group handovers while maintaining low signaling overhead.
Data Source
AI summary
Methods, apparatuses, and computer readable medium for enabling an efficient group handover mechanism that has less signaling overhead than single UE handover are provided. An example method at a base station includes transmitting a group handover request for the group of UEs to a target base station. The method further includes receiving a group handover acknowledgment from the target base station. The method further includes transmitting a group handover message to the group of UEs.