Single Radio Controller Paging Optimization
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Solution Overview
Problem
In LTE networks, the inter-system cell reselection between 2G/3G and LTE networks leads to increased signaling load due to frequent location updates, and existing paging mechanisms waste system resources by paging across all registered location areas, especially when Idle State Signaling Reduction (ISR) is activated.
Innovation Solution
A mobility management method and device that optimizes paging by using a Single Radio Controller (SRC) to receive paging messages, determine the paging management context of user equipment (UE), and initiate paging only in specific cells within the determined range, reducing unnecessary signaling and resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging is performed in all location areas with which the UE registers in different network standards, then the UE can be reached reliably, but system air interface resources are wasted
Solution Approach 1:
The patent segments the paging process into two stages: first paging only in the current serving cell where the UE is most likely to be found, and only if that fails, then expanding to other location areas. This segmentation reduces unnecessary paging transmissions in multiple location areas while maintaining reliable UE reachability.
Solution Approach 2:
The patent applies partial action by performing paging in a limited scope first (only the current serving cell) rather than exhaustively paging in all registered location areas. This partial approach suffices for most cases where the UE is likely in the serving cell, reducing resource waste while maintaining adequate reliability.
2Adaptability or versatility
If the UE performs inter-system cell reselection between LTE and 2G/3G networks, then the UE can access available network coverage, but signaling load increases due to frequent location updates
Solution Approach 1:
The patent performs preliminary actions by pre-configuring the UE with multiple network standard preferences and maintaining context information about the UE's mobility patterns across different network standards. This allows the network to predict and prepare for inter-system reselection, reducing the need for frequent location updates when the UE moves between LTE and 2G/3G networks.
3Ease of operation
If the UE camps on only one network standard to listen to paging messages, then the UE can simplify its reception process, but paging cannot be performed efficiently when the UE is in idle state across multiple network standards
Solution Approach 1:
The patent introduces the SRC (Single Radio Controller) as an intermediary that manages paging across multiple network standards. The SRC receives paging requests, determines the appropriate network standard and cell based on UE context information, and forwards the paging message to the correct network. This intermediary approach maintains UE reception simplicity while improving paging efficiency across hybrid network standards.
Data Source
AI summary
Embodiments of the present invention provide a mobility management method and a device, where the mobility management method of a single radio controller includes: receiving a paging message for a UE sent by at least one first network device, where the paging message carries a user identifier used for indicating the UE; determining a paging management context of the UE according to the user identifier, where the paging management context of the UE records network standard information; and determining a paging range according to the paging message and the paging management context of the UE, and initiating paging on the UE in a cell in the paging range. The mobility management method and the device provided in the embodiments of the present invention implement optimization on a paging process and improve a mobility management effect.