Multi-SIM Terminal Radio Notification Area Update via Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G New Radio (NR) networks, the process of updating a radio notification area for terminals in an inactive state becomes complex when multiple subscriber identity modules (SIM) cards with different states are involved, leading to increased communication resource usage and time consumption.
Innovation Solution
A method is introduced where a terminal configured with multiple SIM cards can integrate the process of updating the radio notification area with the process of handing over to a new base station. This is achieved by sending radio notification area update information and measurement reports through the connected SIM card, reducing the need for multiple state changes and communications with the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal performs separate radio notification area update process and handover process for multiple SIM cards, then each process can be completed independently, but the communication resource usage increases and time consumption increases
Solution Approach 1:
The patent merges the radio notification area update process with the handover process by utilizing the handover signaling to carry the radio notification area update information. When the terminal performs handover for the second SIM card, it simultaneously updates the radio notification area for the first SIM card by including the update information in the handover request message, thereby completing both processes in one operation and reducing time consumption.
Solution Approach 2:
The handover signaling is made multi-functional by enabling it to carry both handover information and radio notification area update information. The handover request message serves dual purposes: facilitating the handover of the second SIM card and updating the radio notification area for the first SIM card, thus reducing the need for separate communication resources.
2Reliability
If the terminal performs separate radio notification area update process and handover process for multiple SIM cards, then each process can be completed independently, but the communication resource usage increases
Solution Approach 1:
The patent combines the radio notification area update process with the handover process, so that the terminal uses the same communication resources for both purposes. By including radio notification area update information in the handover signaling, the terminal avoids allocating additional communication resources for a separate update process.
Solution Approach 2:
The handover signaling is designed to perform multiple functions simultaneously: it facilitates the handover of the second SIM card and updates the radio notification area for the first SIM card. This multi-functionality reduces the overall communication resource usage by eliminating redundant signaling.
3Loss of time
If the terminal integrates the radio notification area update process with the handover process, then communication resource usage is reduced and time consumption is saved, but the process complexity increases
Solution Approach 1:
The patent applies preliminary action by having the terminal prepare the radio notification area update information in advance, before the handover process begins. The terminal configures the update information based on the first SIM card's current radio notification area, so that when the handover signaling is transmitted, the update information is already ready to be included, streamlining the integrated process.
4Use of energy by moving object
If the terminal integrates the radio notification area update process with the handover process, then communication resource usage is reduced, but the process complexity increases
Solution Approach 1:
The terminal performs preliminary configuration of the radio notification area update information based on the first SIM card's current state, before initiating the handover process. This advance preparation simplifies the integrated process by ensuring that all necessary information is ready when the handover signaling is transmitted, reducing the complexity of coordinating multiple processes simultaneously.
Data Source
AI summary
A method and apparatus for updating a radio notification area. The method is applicable to a terminal configured with at least a first subscriber identity module (SIM) card and a second SIM card, and includes: receiving configuration information sent by a first base station; when the second SIM card is to be handed over to a second base station, sending radio notification area update information of the first SIM card to the second SIM card based on the configuration information in response to that the second base station is located outside a radio notification area configured by the first base station for the first SIM card; and sending, through the second SIM card and to the first base station, a measurement report of handing over to the second base station, wherein the measurement report includes the radio notification area update information of the first SIM card.