Wireless Communication Apparatus Multiple-Cell Group Data Reliability
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Solution Overview
Problem
In wireless communication systems, data communication failures occur during non-communication modes like RRC inactive mode due to degraded radio quality, making continuous data transmission difficult, especially when transitioning to RRC idle mode and reselecting cells.
Innovation Solution
A wireless communication apparatus and method that selectively uses a multiple-cell group for data communication, allowing data transmission even in non-communication modes by pre-selecting multiple communication counterparts based on radio quality, enabling continuous data communication by switching to alternative cells when one fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data communication is performed during non-communication mode using a single cell, then power consumption is reduced and quick transition to connected mode is enabled, but data communication reliability deteriorates when radio quality degrades
Solution Approach 1:
The system pre-selects multiple candidate cells and establishes a multiple-cell group before data communication is needed. This preliminary preparation ensures that when data communication is required during non-communication mode, the terminal apparatus already has alternative cells ready, eliminating the need for time-consuming cell reselection and ensuring continuous communication reliability without adding operational complexity
Solution Approach 2:
The system dynamically adapts the communication configuration by switching between single-cell and multiple-cell modes based on radio quality conditions. When radio quality is good, single-cell mode is used for simplicity; when degradation is detected, the system transitions to multiple-cell group mode, providing adaptive reliability without permanently increasing system complexity
2Reliability
If cell reselection is performed when radio quality degrades during non-communication mode, then data communication can be maintained, but transition time increases and continuous communication is disrupted
Solution Approach 1:
Multiple candidate cells are pre-selected and configured into a multiple-cell group during the non-communication mode when the terminal apparatus is already camped on a cell. This preliminary configuration stores alternative communication paths in advance, so when data communication needs to occur or radio quality degrades, the system can immediately switch to an alternative cell without time-consuming reselection procedures, maintaining continuous communication with zero transition time
Solution Approach 2:
The system maintains continuous data communication capability by having multiple cells in the multiple-cell group ready to serve as fallback options. When the primary cell experiences radio quality degradation, the terminal apparatus seamlessly transitions to an alternative cell within the same non-communication mode framework, ensuring uninterrupted data transmission without exiting and re-entering the non-communication mode, thus maintaining continuous useful action
3Reliability
If multiple candidate cells are pre-selected for data communication during non-communication mode, then communication reliability improves, but system complexity and processing overhead increase
Solution Approach 1:
The system segments the cell management function by separating the multiple-cell group configuration (performed by the base station) from the terminal apparatus operations. The base station performs the complex task of selecting and configuring multiple candidate cells, while the terminal apparatus simply follows instructions to use the provided multiple-cell group. This segmentation reduces terminal apparatus complexity while maintaining high communication reliability through multi-cell support
Solution Approach 2:
The multiple-cell group configuration serves multiple functions: it provides fallback options for radio quality degradation, enables load balancing across multiple cells, and supports seamless handover scenarios. By creating a universal configuration that handles multiple potential issues, the system achieves high reliability without requiring separate mechanisms for each scenario, thereby reducing overall system complexity
Data Source
AI summary
A wireless communication apparatus includes processor circuitry configured to control to perform data communication when communication is implemented with another wireless communication apparatus, the data communication selectively using a multiple-cell group, the multiple-cell group being selected when communication with the other wireless communication apparatus in a non-communication mode is established and being able to perform data communication allowed even in the non-communication mode.