User Equipment System Information Validation in Network Sharing
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Solution Overview
Problem
In network sharing systems, user equipment (UE) faces inefficiencies due to unnecessary operations of receiving system information during inter-cell movement, as the new cell may use the same system information as the previous cell, leading to invalid data usage and incorrect information acquisition.
Innovation Solution
A method where the UE compares the PLMN identity of the previous cell with the new cell, setting stored system information as valid if identical, and updating it by receiving system information blocks with 'Area scopes Cell and PLMN' if different, ensuring valid data usage and efficient information acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE receives system information blocks in every new cell during inter-cell movement, then the system information is updated to ensure correctness, but unnecessary operations occur when the new cell uses the same system information as the previous cell, leading to loss of time and energy
Solution Approach 1:
The UE performs preliminary comparison of cell identities (cell ID, frequency, PLMN) before receiving system information blocks. If the new cell's identity matches the previous cell's identity, the UE determines that the previously stored system information remains valid and skips the reception operation, thus avoiding unnecessary time consumption while ensuring correctness through preliminary validation
Solution Approach 2:
The UE autonomously determines the validity of system information by comparing cell identities itself, without requiring external indication from the network. This self-service mechanism allows the UE to independently decide whether to receive system information blocks, reducing unnecessary operations and saving time
2Productivity
If the UE uses stored system information from the previous cell without verification, then operational efficiency is improved by avoiding re-reception, but invalid data may be used if the new cell has different system information
Solution Approach 1:
The UE performs preliminary verification by comparing multiple identity parameters (cell ID, frequency, PLMN) before using stored system information. This preliminary check ensures that the stored information is still valid for the new cell, maintaining reliability while enabling efficient reuse of cached data when conditions match
Solution Approach 2:
The UE continuously monitors cell identity parameters and provides feedback on whether stored system information remains valid. When identity parameters change, the UE detects this feedback and triggers re-reception of system information blocks, ensuring validity while maintaining efficiency during periods of unchanged conditions
Data Source
AI summary
A method and apparatus are provided for receiving system information during inter-cell movement of a user equipment (UE) in a network sharing (NS) system. The UE moves from a previous cell to a new cell. After the movement, the UE compares a public land mobile network (PLMN) identity indicating a PLMN to which the previous cell belongs, with a PLMN identity indicating a PLMN to which the new cell belongs. If the PLMN identity of the new cell is equal to the PLMN identity of the previous cell, the UE sets system information blocks that it has received and stored in the previous cell, as system information of the new cell. If the PLMN identity of the new cell is not equal to the PLMN identity of the previous cell, the UE receives system information blocks with ‘Area scopes Cell and PLMN’ from the new cell, considering that the system information for the previous cell will be invalid in the new cell.