Forbidden Cell Measurement Interval Adjustment
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Solution Overview
Problem
Wireless communication systems face inefficiencies due to unnecessary inter-RAT cell measurements, particularly when mobile devices attempt to reselect or handover to forbidden cells, leading to increased processing resources and potential service loss.
Innovation Solution
A method where user equipment (UE) identifies forbidden neighbor cells while in a serving cell and adjusts their measurement intervals based on signal strength, reducing the frequency of measurements for these cells by applying specific measurement interval factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile device performs periodic measurements of all neighboring cells to enable cell reselection, then the cell reselection capability is maintained, but unnecessary processing resources are consumed when measuring forbidden cells
Solution Approach 1:
The patent segments the neighbor cell list into two distinct groups: forbidden cells and non-forbidden cells. This segmentation allows the mobile device to apply different measurement strategies to each group, measuring only non-forbidden cells while completely skipping forbidden cells, thereby eliminating unnecessary processing resource consumption while maintaining cell reselection capability.
Solution Approach 2:
The patent implements partial measurement action by measuring only a subset of neighboring cells (non-forbidden cells) rather than all neighboring cells. The mobile device performs measurements on non-forbidden cells at regular intervals while completely skipping forbidden cells, achieving sufficient cell reselection capability with reduced processing overhead.
2Quantity of substance
If the mobile device measures and attempts to reselect to unsuitable forbidden cells, then measurement coverage is maximized, but service loss may occur and processing resources are wasted
Solution Approach 1:
The patent applies preliminary action by identifying and marking cells as forbidden before the mobile device attempts reselection to them. The network provides forbidden cell information to the mobile device in advance, enabling the device to proactively exclude these cells from measurement and reselection attempts, thereby preventing service loss before it can occur.
Solution Approach 2:
The patent converts the potentially harmful effect of measuring forbidden cells (which leads to service loss and resource waste) into a benefit by using the forbidden cell information to optimize measurement behavior. The mobile device uses the forbidden cell list to eliminate wasteful measurements, thereby benefiting from reduced processing overhead and improved service reliability.
3Loss of information
If the mobile device performs inter-RAT measurements on all neighbor cells, then comprehensive network visibility is achieved, but processing overhead increases significantly
Solution Approach 1:
The patent segments the neighbor cell measurement process by separating forbidden cells from non-forbidden cells in the measurement configuration. This segmentation allows the mobile device to maintain comprehensive network visibility for non-forbidden cells while completely excluding forbidden cells from inter-RAT measurements, thereby reducing processing overhead without significant loss of useful network information.
Solution Approach 2:
The patent applies different measurement qualities to different cell groups: full measurement quality is applied to non-forbidden cells to maintain network visibility, while measurement quality is completely suppressed for forbidden cells. This local differentiation of measurement quality optimizes the balance between network visibility and processing overhead.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. According to these techniques, a user equipment (UE) may determine that the UE is in a serving cell, identify at least one forbidden neighbor cell while the UE is in the serving cell, and adjust a measurement interval of the at least one forbidden neighbor cell while the UE is in the serving cell.