User Equipment Target Network Selection for Rapid Handover
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Solution Overview
Problem
The existing handover process in cellular networks is inefficient, leading to prolonged handover preparation times and reduced handover efficiency, especially in scenarios where user equipment (UE) rapidly moves between cells, resulting in poor quality of service and increased call drops.
Innovation Solution
A method and apparatus that enable user equipment to select a target network side device based on configuration information, allowing for rapid handover by instructing the selected device to provide service, thereby bypassing the need for extensive handover preparation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the traditional handover preparation process is performed completely, then the handover is reliable and resources are properly allocated, but the handover time is prolonged and handover efficiency is reduced
Solution Approach 1:
The target eNB performs admission control and resource reservation in advance before the actual handover execution. The handover command message includes pre-configured resource information and C-RNTI, allowing the UE to directly access prepared resources without waiting for real-time allocation, thus reducing handover time while maintaining reliability
Solution Approach 2:
The handover process is divided into preparation phase (completed by target eNB in advance) and execution phase (rapid UE selection and connection). The preparation phase includes admission control, resource reservation, and parameter configuration, while the execution phase involves UE measuring, selecting target, and establishing connection, allowing each phase to be optimized independently
2Productivity
If the handover preparation process is accelerated, then the handover efficiency is improved, but the complexity of coordination between network devices increases
Solution Approach 1:
The UE autonomously performs handover execution by selecting the target eNB based on configuration information received from the source eNB. The UE independently measures signal strength, selects the appropriate target cell, and establishes connection without requiring continuous network coordination, thus simplifying the overall system complexity while maintaining high handover efficiency
Solution Approach 2:
The handover command message acts as an intermediary carrier that transmits all necessary handover parameters, resource information, and configuration data from the source eNB to the UE. This pre-packaged message eliminates the need for complex real-time coordination protocols during the actual handover execution
Data Source
AI summary
A method for selecting a target network side device includes: after at least one first network side device completes admission control and receives a data packet for user equipment, selecting, by the user equipment, from the at least one first network side device according to configuration information of the at least one first network side device, a first network side device that meets a first preset condition as a target network side device to communication with the user equipment, where the at least one first network side device is a candidate target network side device that is determined by a second network side device and that is for communication with the user equipment that meets a second preset condition; and sending, by the user equipment to the first network side device, a message instructing the first network side device to provide a service for the user equipment.