System Information Change Notification for Wireless Networks
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Solution Overview
Problem
In wireless communication networks, especially in LTE and LTE-Advanced technologies, devices face inefficiencies in system information updates due to the need to frequently reacquire all system information blocks (SIBs) even if only a few have changed, leading to significant power consumption and data redundancy.
Innovation Solution
The implementation of a system information change (SIC) indication mechanism allows user equipment (UE) to identify which specific SIBs or SI messages need to be updated, using a bitmap or list-based approach to notify devices of changes, thereby reducing unnecessary data acquisition and conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment reacquires all system information blocks frequently to ensure up-to-date information, then system information reliability is improved, but power consumption increases and data redundancy occurs
Solution Approach 1:
The patent segments system information into individual system information blocks (SIBs) that can be independently identified and acquired. The network provides change indications that specify which particular SIBs have changed, allowing user equipment to segment the acquisition process and only retrieve modified blocks rather than reloading all system information.
Solution Approach 2:
The patent extracts only the necessary changed portions of system information from the complete set. By using change indication mechanisms (such as system information value tags or change bitmaps), the network enables user equipment to extract and reacquire only the specific SIBs that have changed, eliminating the need to extract and process the entire system information set.
2Reliability
If user equipment reacquires all system information blocks frequently, then system information reliability is improved, but data redundancy increases
Solution Approach 1:
The patent segments system information into individually trackable blocks with unique identifiers. This segmentation enables the network to provide precise change indications pointing to specific SIBs, allowing user equipment to segment the data acquisition process and avoid redundant transfers of unchanged information.
Solution Approach 2:
The patent extracts and transmits only the changed portions of system information through change indication mechanisms. The network identifies which SIBs have changed and communicates this information to user equipment, enabling selective extraction of only the necessary data blocks and eliminating redundancy in data transfers.
3Productivity
If the network provides detailed change indications for each system information block, then update efficiency is improved, but network signaling complexity increases
Solution Approach 1:
The patent merges multiple change indication mechanisms into a unified system information value tag field that can be transmitted within existing network signaling protocols. This merging approach consolidates change information for multiple SIBs into a single manageable indicator, improving update efficiency while avoiding excessive signaling complexity.
Solution Approach 2:
The patent creates a universal change indication mechanism (system information value tags) that can be applied across different types of system information blocks. This multi-functional approach allows the same indication mechanism to serve various SIB types, improving efficiency without requiring separate complex signaling for each block type.
Data Source
AI summary
System information change notification techniques for wireless communication networks are described. In one embodiment, for example, an apparatus may comprise a memory and logic, at least a portion of which is implemented in circuitry coupled to the memory, the logic to determine to perform a system information (SI) update procedure at user equipment (UE), identify, based on an SI change indication, one or more SI messages from which to acquire system information blocks (SIBS) according to the SI update procedure, and acquire at least one SIB from each of the one or more SI messages for storage at the UE. Other embodiments are described and claimed.