RAN Assistance Information Segmentation for Wireless Network Updates
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in updating Radio Access Network (RAN) rules and assistance information, leading to cumbersome data delivery and resource consumption, especially when the user equipment (UE) changes serving RAN access nodes or PLMNs, which affects user experience and load balancing.
Innovation Solution
The method involves updating network detection and selection information and traffic routing information through access stratum, handover, area update, attach, or cell selection procedures, using set-based configurations for RAN assistance information and rules, reducing the amount of data sent and enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RAN assistance information and RAN rules are updated frequently to reflect RAN conditions, then user experience and load balancing are improved, but radio resource consumption increases due to cumbersome data delivery
Solution Approach 1:
The RAN assistance information is divided into multiple sets (first RAN assistance information set and second RAN assistance information set), each containing different parameters. The network can selectively update only the necessary sets based on current RAN conditions, rather than transmitting complete information frequently, thus reducing radio resource consumption while maintaining effective load balancing and user experience.
Solution Approach 2:
Instead of updating all RAN assistance information parameters in every update cycle, the system performs partial updates by transmitting only the necessary information sets (e.g., only first set or only second set) based on current network conditions and UE context. This partial action approach reduces the amount of data transmitted over the air interface while still achieving the desired load balancing and user experience improvements.
2Measurement precision
If complete RAN assistance information is transmitted to ensure accurate network selection, then selection accuracy is improved, but data transmission volume increases consuming more radio resources
Solution Approach 1:
RAN assistance information is segmented into multiple sets with different purposes and parameter compositions. The network can transmit only the relevant set(s) needed for accurate network selection in each scenario, rather than always transmitting complete information. This segmentation maintains selection accuracy while significantly reducing data transmission volume by sending only what is necessary for the current decision context.
Solution Approach 2:
Different sets of RAN assistance information are prepared with different local qualities (different parameter combinations suited for different scenarios). The network selects and transmits the appropriate set based on local conditions (current RAN state, UE capabilities, service requirements), ensuring accurate network selection while minimizing data transmission by matching the information quality to the specific selection context rather than using a one-size-fits-all approach.
Data Source
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AI summary
A method (70) of updating network detection and selection information and traffic routing information for a communication device in a wireless communication system is disclosed. The method comprises updating network detection and selection information and traffic routing information by an access stratum procedure, a handover procedure, an area update procedure, an attach procedure, or a cell selection or reselection procedure (710).