Management Node Paging Optimization for Shared Subscriber Numbers
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Solution Overview
Problem
In wireless communication networks, the failure rate of voice calls increases when terminal devices share the same subscriber number but have different capabilities regarding circuit switching, as the management node struggles to accurately identify and page the appropriate device, leading to incorrect paging responses.
Innovation Solution
A method for a management node to receive indications about whether a terminal device shares a subscriber number with another device and supports circuit switching, allowing it to determine whether to respond to paging requests based on these indications, thereby optimizing paging decisions and reducing call failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the management node pages all terminal devices with the same MSISDN, then the coverage of paging is maximized, but the call failure rate increases due to including devices that do not support circuit switching
Solution Approach 1:
The management node performs preliminary actions by retrieving capability information about terminal devices before processing paging requests. The node checks whether each terminal device supports circuit switching functionality in advance, so that when a paging request arrives, the node can immediately determine which devices should be paged based on their pre-stored capability attributes, avoiding trial-and-error paging that causes call failures
Solution Approach 2:
The management node introduces an intermediary mechanism by maintaining a database or cache that stores capability information of terminal devices. This intermediary data structure mediates between the paging request and the actual paging action, allowing the node to filter and select only appropriate target devices based on their circuit switching support status, thereby preventing unnecessary paging of incompatible devices
2Measurement precision
If the management node checks circuit switching capability for each terminal device, then the paging accuracy is improved, but the processing time and complexity increase
Solution Approach 1:
The management node performs capability checking in advance during terminal device registration or profile retrieval, storing the results in a database. When a paging request arrives, the node simply queries the pre-stored capability information rather than performing real-time capability detection, significantly reducing processing time while maintaining accurate identification
Solution Approach 2:
The management node creates a copy or snapshot of terminal device capability information and stores it in a database or cache structure. This copied information can be rapidly retrieved and used for paging decisions without requiring the node to re-verify capabilities during each paging operation, thus improving response speed while maintaining identification accuracy
3Reliability
If the management node stores capability information of all terminal devices, then the paging decision accuracy is improved, but the data management complexity increases
Solution Approach 1:
The management node extracts only the necessary capability information (circuit switching support status) from comprehensive terminal device profiles and stores just this filtered information in the database. By taking out only the relevant attribute rather than storing entire device profiles, the node reduces data management complexity while maintaining sufficient information for accurate paging decisions
Solution Approach 2:
The management node applies local quality by storing capability information in a structured format that is specifically optimized for paging decisions. The database schema and data organization are designed to quickly retrieve and match the specific circuit switching capability attribute needed for paging, rather than storing unstructured complete device information, thus reducing management complexity while improving response accuracy
Data Source
AI summary
The present disclosure relates to a method for a management node to page a terminal device, and a management node for use in wireless communication network. The method for a management node to page a terminal device includes: receiving a first indication about whether the terminal device shares a subscriber number with another terminal device; checking a second indication about whether the terminal device supports a circuit switching call function; receiving a paging request about the terminal device; and determining whether to respond to the paging request, based on the first indication and based on a result of the operation of checking the second indication. The success rate of the circuit switching call in the wireless communication network may be improved.