Network Side Initiated UE Transfer Across Evolved and UMTS Networks
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Solution Overview
Problem
Current methods for transferring user equipment (UE) in mobile communication systems are limited, as they only apply to 2G or 3G networks and do not effectively handle UE transfers between CN entities in evolved networks or when both UMTS and evolved networks coexist, leading to inefficiencies and service disruptions.
Innovation Solution
A method and system where a network side element initiates UE transfer by sending a transfer instruction to the UE, allowing the access network to select a target CN element different from the source, ensuring better service quality by proactive selection based on mechanisms like load sharing or service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current UE transfer methods are used in 2G or 3G networks, then UE transfer can be achieved, but the method cannot be applied to evolved networks or coexisting UMTS and evolved networks
Solution Approach 1:
The patent creates a universal UE transfer mechanism that works across multiple network types (2G, 3G, and evolved networks). The source CN element and target CN element can be from different network types, and the transfer procedure is standardized to work in all scenarios including coexisting networks, making the solution multi-functional and broadly applicable.
2Reliability
If UE transfer is initiated without proactive target selection, then transfer can occur, but service quality and network efficiency are reduced
Solution Approach 1:
The patent implements preliminary action by having the source CN element proactively select a target CN element before initiating the UE transfer. The source CN element determines the target CN element based on criteria such as load conditions, service requirements, and network status, and includes this selection in the transfer instruction sent to the UE. This advance selection ensures optimal service quality and network efficiency.
3Productivity
If UE transfer is performed without network-side initiation, then UE autonomy is maintained, but transfer efficiency and optimization are reduced
Solution Approach 1:
The patent implements feedback mechanisms where the source CN element monitors network conditions, UE status, and target CN element availability to make informed transfer decisions. The network-side element uses this feedback information to proactively initiate transfers at optimal times, balancing automation with efficiency. The UE also provides feedback through transfer confirmation messages.
Data Source
AI summary
A method and system for transferring user equipment (UE) in a mobile communication system are provided. According to the method, a source core (CN) network determines to transfer a UE that it serves and sends a transfer instruction carrying UE transfer restriction information to the UE; an access network receives a transfer request that is sent by the UE according to the restriction information carried in the transfer instruction; the access network selects a target CN entity that is different from the source CN entity for the UE; and the UE is transferred to the target CN entity. The method and system provided by the disclosure are applicable to user transferring between CN entities in any communication network. The transferring is initiated by a network side entity, and a more preferable CN entity is selected for the UE to provide a better service.