UE Group-Based Cell Reselection Parameter Management
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Solution Overview
Problem
Existing wireless communication systems lack flexibility in providing and applying different parameters for IDLE/INACTIVE mode mobility, leading to potential network overload and inefficient cell reselection in scenarios involving mixed RATs and varying device capabilities.
Innovation Solution
A method and system that allow network nodes to broadcast multiple sets of parameters for IDLE/INACTIVE mode mobility, which can be selectively applied to wireless devices via RRC signaling, enabling differentiated cell reselection based on device capabilities and mobility states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated priorities are provided to all wireless devices, then load balance is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent applies local quality by providing dedicated priorities only to specific wireless devices based on their capabilities (EN-DC capable vs. non-EN-DC capable) rather than uniformly to all devices. The network node identifies device capabilities and selectively applies different priority treatments, thereby achieving load balance improvement for capable devices while avoiding unnecessary signaling overhead for devices that cannot utilize the feature.
Solution Approach 2:
The patent changes the parameter of priority assignment from a uniform approach to a capability-dependent approach. By introducing capability-based differentiation, the system adjusts priority parameters dynamically according to device characteristics, enabling load balance optimization where applicable while reducing signaling complexity where not needed.
2Adaptability or versatility
If multiple parameter sets are broadcast for different device groups, then adaptability is improved, but system complexity increases
Solution Approach 1:
The patent segments the wireless device population into distinct groups based on EN-DC capability. Separate parameter sets are defined and broadcast for different device segments (EN-DC capable devices and non-EN-DC capable devices). This segmentation enables targeted parameter application, improving adaptability to different device capabilities while managing system complexity through structured organization of parameter sets.
Solution Approach 2:
The patent creates a universal framework that handles multiple device types through a unified mechanism. The same broadcast channel and signaling structure are used to convey both common and device-specific parameters, allowing the system to serve multiple device categories without requiring separate communication channels or fundamentally different system architectures.
3Ease of operation
If all wireless devices camp on the same cell, then ease of operation is improved, but network overload occurs
Solution Approach 1:
The patent applies preliminary anti-action by preemptively assigning different priorities to different device groups before they connect to the network. EN-DC capable devices are given priorities that steer them toward suitable cells, preventing potential network overload from occurring in the first place. This proactive approach distributes load before connection requests are processed, maintaining simplicity for devices while protecting network capacity.
Solution Approach 2:
The network node performs preliminary actions by evaluating device capabilities and assigning appropriate priority parameters before the devices attempt to camp on cells. This advance preparation ensures that devices are guided to appropriate cells based on their capabilities, distributing network load proactively rather than reactively, thereby preventing overload while maintaining operational simplicity.
Data Source
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AI summary
A method, system and apparatus are disclosed. According to one or more embodiments, a network node (16) for communicating with a wireless device (22) is provided. The network node (16) includes processing circuitry (68) configured to: indicate a plurality of sets of parameters for IDLE/INACTIVE mode mobility parameters, and indicate one of the plurality of sets of parameters for the wireless device (22) to implement.