Multi-SIM MDT Feedback for Paging Collision Avoidance
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Solution Overview
Problem
Multi-card terminal devices experience communication issues due to overlapping paging moments of different SIM cards, leading to missed paging signaling and failed service establishment.
Innovation Solution
Implementing Minimization of Drive-Test (MDT) configuration information for multi-card terminal devices to perform measurements in idle states, storing the results, and sending them to network devices for improved communication configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-card terminal devices use multiple SIM cards with independent paging schedules, then each SIM card can independently receive paging signaling, but paging moments overlap causing missed paging signaling and failed service establishment
Solution Approach 1:
The terminal device performs MDT measurements in idle state to detect paging collision situations, stores measurement results, and feeds back this information to the network device. The network device uses this feedback to determine whether to send paging signaling at specific moments, thereby avoiding paging collisions and improving paging reception reliability in multi-card terminal devices.
Solution Approach 2:
The terminal device performs MDT measurements and stores measurement results in advance before actual paging occurs. This preliminary action allows the network device to have advance knowledge of potential paging collision situations, enabling it to make informed decisions about paging signaling transmission timing to avoid collisions.
2Productivity
If the terminal device performs MDT measurement in connected state, then measurement can be performed immediately, but the terminal device must maintain connected state consuming more power and resources
Solution Approach 1:
The terminal device performs MDT measurements periodically when in idle state rather than maintaining continuous connected state. This periodic action in idle state reduces power consumption and resource usage while still enabling the terminal to perform necessary measurements and provide feedback to the network device for optimizing paging timing.
3Ease of operation
If the network device sends paging signaling at any moment, then paging can be sent without restriction, but paging signaling may be missed due to overlapping paging moments of different SIM cards
Solution Approach 1:
The network device uses MDT measurement feedback from the terminal device to determine optimal paging signaling transmission moments. This feedback mechanism allows the network device to maintain transmission flexibility while avoiding moments when paging collisions are likely to occur, thereby improving reception reliability.
Solution Approach 2:
The network device changes the timing parameter of paging signaling transmission based on MDT measurement results. By adjusting the paging moment parameter according to measured collision patterns, the network device can flexibly optimize paging transmission timing to avoid collisions while maintaining operational flexibility.
Data Source
AI summary
A communication method includes: receiving, from a first network device, minimization of drive tests (MDT) configuration information for a multi-card terminal device; and in response to the multi-card terminal device entering an idle state from a connected state, performing MDT measurement based on the MDT configuration information, and storing obtained MDT measurement information.