Multi-USIM Network Switching with Scheduling Gap Signaling
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Solution Overview
Problem
Multi-USIM terminal devices cause performance degradation in existing networks by abruptly releasing connections without notification, leading to miscommunication and traffic interruption during network switches.
Innovation Solution
Implementing a method for multi-USIM devices to notify the network of an expected switch time and support per-FR scheduling gaps to minimize traffic interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the terminal device releases the connection with the first network without notification when switching to the second network, then the switching speed is improved, but the network performance deteriorates
Solution Approach 1:
The terminal device sends a connection release indication message to the first network device before actually releasing the connection. This preliminary notification allows the first network device to prepare for the connection release, ensuring smooth handover while maintaining network performance and enabling the network to anticipate and manage switch times correctly.
2Reliability
If the terminal device maintains connection with the first network while switching to the second network, then the network performance is maintained, but the device complexity increases
Solution Approach 1:
The terminal device maintains the radio resource control (RRC) connection with the first network device during the switching process. By keeping the connection active and sending a connection release indication message, the device ensures continuous communication capability while managing the transition to the second network, avoiding interruption of useful communication actions.
3Reliability
If the terminal device sends connection release indication message, then the network performance is improved, but the loss of time increases
Solution Approach 1:
The connection release indication message is sent in advance before the actual connection release occurs. This preliminary action allows the network device to prepare necessary resources and procedures, ensuring that the actual connection release can happen quickly and smoothly, thus minimizing the overall time loss while maintaining network performance.
Data Source
AI summary
Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A method of communication comprises generating, at a terminal device, information of a scheduling gap of the first network device, the first network device being associated with a first subscriber identity module of the terminal device and the second network device being associated with a second subscriber identity module of the terminal device; and transmitting the information of the scheduling gap to the first network device for requesting a switch from the first network device to a second network device without releasing a radio resource control connection with the first network device. Thereby, only traffic on a part of serving cells of the first network device is interrupted.