User Device Cross-System RRM Configuration and Reporting
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Solution Overview
Problem
Current wireless communication systems fail to report channel conditions from one radio access system to the main node when a user device is connected to both LTE and 5G systems, hindering mobility management and secondary node addition.
Innovation Solution
A method where a user device obtains an RRM configuration from a first base station, sends it to a second base station, receives a request for a measurement report, and sends the measurement report back, including results such as RSSI and RSRP, enabling the main node to manage mobility and secondary node addition across different radio access systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the user device is connected to two base stations of two radio access systems, then the user device can access multiple networks, but the main node cannot obtain channel conditions in the secondary node's radio system
Solution Approach 1:
The patent introduces the user device as an intermediary that collects measurement results from the secondary node's radio system and forwards them to the main node. This mediator approach enables information transfer across system boundaries without requiring direct connection between base stations, resolving the information loss problem while maintaining multi-network access
Solution Approach 2:
The patent segments the measurement and reporting functions: the user device performs measurements in the secondary node's system, the secondary node configures measurement parameters, and the main node receives and uses the results. This segmentation allows each node to perform its specialized function while achieving overall system-wide information availability
2Ease of operation
If the main node needs to manage mobility in the secondary node's radio access system, then mobility management is required, but the main node lacks channel condition data needed for management decisions
Solution Approach 1:
The patent implements a feedback mechanism where measurement results from the secondary node's radio system are fed back to the main node through the user device. This feedback loop enables the main node to make informed mobility management decisions based on actual channel conditions, improving both the ease and reliability of mobility management
3Loss of information
If the user device reports measurement results to the main node, then the main node gains channel condition information, but existing systems do not support cross-system measurement reporting
Solution Approach 1:
The patent applies universality by making the user device perform multiple functions: it acts as a regular communication device, a measurement instrument in the secondary node's system, and an information relay to the main node. This multi-functionality enables cross-system reporting without adding separate dedicated hardware, reducing overall system complexity
Data Source
AI summary
Methods and apparatus for radio resource measurement (RRM) at a user device between two wireless communication systems, the method including obtaining an RRM configuration from a first base station (BS) in a first wireless communication system, sending the RRM configuration to a second BS in a second wireless communication system, receiving, from the second BS, a request for a measurement report, triggering a measurement in the first wireless communication system based on the RRM configuration, and sending the measurement report to the second BS. The measurement report includes a measurement result obtained from the triggered measurement.