RAN Assistance Information Segmentation for Roaming UEs
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Solution Overview
Problem
Current wireless communication systems lack efficient methods to handle radio access network (RAN) assistance information for roaming user equipment (UEs), leading to potential discrimination against roaming UEs and suboptimal traffic steering between 3GPP LTE and WLAN networks.
Innovation Solution
The method involves providing separate RAN assistance information for roaming UEs and non-roaming UEs, allowing the user equipment (UE) to determine its status and apply the corresponding information for efficient traffic steering, using distinct threshold values or offset values for each PLMN, ensuring fair and optimized network utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single RAN assistance information is provided for all UEs, then the system structure is simple, but roaming UEs are discriminated against and cannot receive optimized assistance information
Solution Approach 1:
The patent segments RAN assistance information into separate categories for roaming UEs and non-roaming UEs. The network provides distinct RAN assistance information sets tailored to each UE type, allowing roaming UEs to receive optimized assistance information while maintaining system manageability through structured segmentation.
2Productivity
If separate RAN assistance information is provided for roaming and non-roaming UEs, then traffic steering is optimized, but the complexity of information management increases
Solution Approach 1:
The patent applies local quality by providing customized RAN assistance information specific to each UE's roaming status. Roaming UEs receive assistance information optimized for their specific scenario (including parameters like threshold values and offset values for inter-RAT measurements), while non-roaming UEs receive standard assistance information, thereby optimizing traffic steering for each local condition.
Solution Approach 2:
The patent utilizes parameter changes by modifying RAN assistance information parameters (such as measurement thresholds, offset values, and reporting configurations) based on UE roaming status. This allows the system to optimize traffic steering efficiency by adjusting specific parameters rather than redesigning the entire information structure.
3Ease of operation
If RAN assistance information is not differentiated for roaming UEs, then the system is easier to operate, but network performance is suboptimal
Solution Approach 1:
The patent implements self-service by enabling UEs to automatically determine their own roaming status and select the appropriate RAN assistance information set. The UE autonomously identifies whether it is a roaming UE or non-roaming UE and applies the corresponding assistance information without requiring manual configuration or complex network intervention, thus maintaining ease of operation while improving network performance.
Data Source
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AI summary
A method and apparatus for handling radio access network (RAN) assistance information in a wireless communication system is provided. A user equipment (UE) receives first RAN assistance information for a roaming UE and second RAN assistance information for a nonroaming UE. According to whether the UE is the roaming UE or the non-roaming UE, the UE applies one of the first RAN assistance information or the second RAN assistance information. If the UE is the roaming UE, the UE applies the first RAN assistance information, and if the UE is the non-roaming UE, the UE applies the second RAN assistance information.