Switch Control Module for Seamless 3G to WiMAX Handover
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Solution Overview
Problem
Current switch mechanisms between 3G and WiMAX systems are complex, leading to long switch times and poor real-time performance, with the network side primarily controlling the switch, whereas the multi-mode UE does not actively participate in the control flow, resulting in inefficient and non-seamless transitions.
Innovation Solution
A dedicated Switch Control Module (SCM) is implemented within the multi-mode UE to actively participate in the switch control process, allowing the UE to manage switch control flows and resources, changing the loose coupling manner between the 3G core network and WiMAX system to a tighter coupling, enabling efficient and seamless switches between the two systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the network side primarily controls the switch between 3G and WiMAX systems, then the switch control is centralized and manageable, but the switch time is long and real-time performance is poor
Solution Approach 1:
The patent inverts the traditional network-controlled switch architecture by enabling the UE to actively participate in and control the switch process. The UE autonomously detects signal quality, selects target base stations, and manages resource allocation, thereby reducing dependency on network-side control signaling and significantly shortening switch time.
Solution Approach 2:
The patent implements preliminary actions by having the UE pre-detect and evaluate potential target base stations before actual switch is needed. The UE continuously monitors signal quality metrics and pre-prepares switch candidates, so when a switch becomes necessary, the selection and execution can proceed rapidly without delayed decision-making.
2Device complexity
If the UE passively receives control signaling for dual-link switch, then the network control is simplified, but the switch efficiency is low and seamless switch cannot be achieved
Solution Approach 1:
The patent implements self-service by enabling the UE to autonomously perform switch control functions without relying on extensive network control signaling. The UE independently detects signal quality, selects target base stations, manages resource allocation, and executes the switch, thereby achieving high switch efficiency while maintaining reasonable control signaling complexity.
Solution Approach 2:
The patent introduces dynamics by enabling the UE to adaptively adjust switch control behavior based on real-time signal conditions. The UE dynamically evaluates multiple base stations, adjusts detection parameters, and flexibly manages resource allocation during the switch process, allowing efficient adaptation to changing network environments.
3Productivity
If the UE actively participates in switch control flow, then switch efficiency and real-time performance are improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the switch control functionality into distinct modular components within the UE: signal quality detection module, base station selection module, resource management module, and switch execution module. This modular architecture enables efficient switch control while managing device complexity through clear functional separation and reusability.
4Reliability
If the switch control procedure is complex, then comprehensive resource management is achieved, but the switch time increases and real-time performance deteriorates
Solution Approach 1:
The patent implements preliminary action by having the UE pre-detect and evaluate potential target base stations before actual switch is needed. The UE continuously monitors signal quality metrics and pre-prepares switch candidates, so when a switch becomes necessary, the selection and execution can proceed rapidly without delayed decision-making.
Solution Approach 2:
The patent extracts critical switch control functions from the complex network-side procedure and relocates them to the UE. By taking out functions such as signal quality detection, base station selection, and resource allocation from the network control plane and implementing them locally in the UE, the patent reduces switch time while maintaining reliable resource management through UE autonomy.
Data Source
AI summary
The present invention discloses a method for controlling switch of multi-mode mobile user equipment (UE). Through designing a dedicated Switch Control Module (SCM) in the existing terminal management module within the multi-mode UE supporting IMS services, utilizing the automatic detection function of the Access Service Network (ASN) at the terminal side, and modifying part of the control signaling of the Connectivity Service Network (CSN) at the terminal side to make the UE participate the switch control procedure actively, the invention implements the seamless switch between different networks, strengthening the real-time performance during the network switch, thus enabling the mobile multimedia service to continue to satisfy the requirements for the real-time performance even when switched in use and enabling the user to obtain quicker data transmission rate, better quality of service and service with a cheaper price.