UE Mobility State Reporting for eNodeB Strategy Selection
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Solution Overview
Problem
The eNodeB in a mobile communication system cannot determine the mobility state of a User Equipment (UE) directly, which hinders the implementation of tailored processing strategies for frequency offset correction, resource scheduling, and cell handover.
Innovation Solution
A mobile terminal evaluates its mobility state based on parameters sent by the eNodeB and reports the determination results through specific messages, allowing the eNodeB to adopt different strategies for UEs in different mobility states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the eNodeB uses system broadcast parameters to configure cell reselection, then the UE can determine its mobility state, but the eNodeB cannot directly measure or know the UE's mobility state
Solution Approach 1:
The patent implements a feedback mechanism where the UE reports its determined mobility state back to the eNodeB through measurement report messages. This allows the eNodeB to obtain mobility state information without directly measuring it, resolving the contradiction between information loss and measurement complexity.
Solution Approach 2:
The UE acts as an intermediary that performs mobility state determination using broadcast parameters and then communicates this information to the eNodeB. This intermediary approach enables the eNodeB to access mobility state data without requiring direct measurement capabilities.
2Adaptability or versatility
If the eNodeB cannot determine UE mobility state, then the system maintains simple processing, but tailored processing strategies for different mobility states cannot be implemented
Solution Approach 1:
The patent performs mobility state determination preliminarily by the UE before reporting to the eNodeB. The UE evaluates its own mobility state using broadcast parameters in advance, so when the eNodeB receives the report, the mobility state information is already prepared and categorized, enabling adaptive processing without complex real-time analysis.
Solution Approach 2:
The mobility state determination result serves as feedback from the UE to the eNodeB, enabling the network to adjust processing strategies based on actual UE mobility conditions. This feedback loop allows for adaptable processing while keeping the determination logic separate from the network side.
3Loss of information
If the UE reports mobility state through measurement report messages, then the eNodeB obtains mobility state information, but additional signaling overhead is introduced
Solution Approach 1:
The patent reuses existing measurement report messages for multiple purposes: both for traditional measurement reporting and for conveying mobility state information. This multi-functionality approach allows the eNodeB to obtain mobility state data without requiring entirely new signaling channels, thus limiting the increase in overhead.
Solution Approach 2:
The UE independently determines and reports its own mobility state without requiring eNodeB-initiated measurement procedures. This self-service approach allows the UE to efficiently communicate its state using existing reporting mechanisms, minimizing additional signaling overhead compared to network-driven measurement approaches.
Data Source
AI summary
The present invention discloses a method for reporting a mobility state of a mobile terminal comprising: a User Equipment (UE) evaluating its own mobility state under a Radio Resource Control (RRC) connection state based on a first evaluation parameter sent by an evolved Node B (eNodeB), and obtaining an evaluated first determination result; and the UE reporting the first determination result to the eNodeB through a measurement report message in the RRC connection state. The present invention also discloses a mobile terminal configured to report determination result of its own mobility state to an eNodeB such that the eNodeB can adopt different pertinent processing strategies for UEs in different mobility states, thereby bringing convenience to practical application.