Wireless System Information Value Tags for On-Demand SIB Delivery
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Solution Overview
Problem
Existing wireless communication systems waste valuable radio resources by periodically broadcasting all System Information Blocks (SIBs), including non-essential ones, especially in small cell deployments where not all UEs require such information.
Innovation Solution
Implementing a value tag system where access nodes transmit essential and non-essential SIBs separately, with non-essential SIBs being transmitted on demand based on a value tag associated with the system information, allowing wireless terminals to request specific SIBs as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all SIBs are periodically broadcast to ensure UEs can access the system, then system access reliability is improved, but radio resource waste increases in small cell deployments
Solution Approach 1:
The patent segments SIBs into two categories: type1 SIBs (essential for system access) and type2 SIBs (non-essential). Type1 SIBs are periodically broadcast to all UEs to ensure system access reliability, while type2 SIBs are transmitted on-demand only to UEs that require them. This segmentation resolves the contradiction by applying different transmission strategies to different SIB types, maintaining reliability for essential information while reducing radio resource waste for non-essential information.
Solution Approach 2:
The patent implements dynamic transmission behavior where the access node monitors for random access requests from UEs and adjusts its SIB transmission accordingly. When a random access request is detected, the access node dynamically transmits type2 SIBs in response. This dynamic approach ensures that SIBs are transmitted only when needed, resolving the contradiction between maintaining system access reliability and reducing radio resource waste in small cell deployments.
2Loss of energy
If type2 SIBs are transmitted on-demand based on random access requests, then radio resource efficiency is improved, but system complexity increases
Solution Approach 1:
The patent simplifies system complexity by segmenting SIBs into type1 and type2 with clearly defined transmission rules. Type1 SIBs follow a simple periodic broadcast schedule, while type2 SIBs follow a straightforward on-demand transmission triggered by random access requests. This segmentation provides a clear, manageable framework that reduces system complexity compared to a unified transmission approach, while still achieving radio resource efficiency.
3Loss of information
If type1 SIBs are separately broadcast from type2 SIBs, then information delivery precision is improved, but transmission overhead increases
Solution Approach 1:
The patent extracts type2 SIBs from the periodic broadcast mechanism and handles them separately through on-demand transmission. This extraction ensures that type1 SIBs (essential information) are delivered precisely through reliable periodic broadcasting, while type2 SIBs are transmitted only when specifically requested. The separation improves information delivery precision for essential SIBs while minimizing overall transmission overhead by avoiding unnecessary type2 SIB transmissions.
Data Source
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AI summary
Method and apparatus use a value tag in conjunction with transmission and/or processing of system information in a wireless communication network, especially in conjunction with second type system information or non-essentially type system information, for more efficient transmission of system information blocks between a wireless access node and mobile terminal devices.