Inter-Frequency Cell Proximity Detection via Intra-Frequency Measurement
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Solution Overview
Problem
In inter-frequency heterogeneous networks, user equipment (UE) consumes excessive power and experiences degraded data transmission performance due to the need to constantly enable the inter-frequency compressed mode for detecting neighboring cells.
Innovation Solution
The UE receives proximity detection information from a radio network controller, performs signal measurements on an intra-frequency cell, and reports proximity to the inter-frequency neighboring cell only when signal quality meets specified standards, eliminating the need for continuous inter-frequency compressed mode operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE constantly enables the inter-frequency compressed mode to detect neighboring cells, then the detection accuracy of inter-frequency neighboring cells is improved, but the power consumption of the UE increases and data transmission performance deteriorates
Solution Approach 1:
The network side performs preliminary actions by determining proximity detection information for inter-frequency neighboring cells and sending it to the UE in advance. The UE then uses this pre-provided information to perform measurements on intra-frequency cells and determine proximity without needing to constantly activate the inter-frequency compressed mode, thereby reducing power consumption while maintaining detection accuracy.
Solution Approach 2:
The patent introduces an intermediary mechanism where the network side acts as a mediator by providing proximity detection information and measurement configurations to the UE. This intermediary approach allows the UE to infer inter-frequency cell proximity through intra-frequency measurements, avoiding the need for continuous inter-frequency measurement and compressed mode activation, thus resolving the contradiction between detection accuracy and power consumption.
2Measurement precision
If the UE constantly enables the inter-frequency compressed mode to detect neighboring cells, then the detection accuracy of inter-frequency neighboring cells is improved, but the data transmission performance of the UE deteriorates
Solution Approach 1:
The network side performs preliminary actions by determining proximity detection information for inter-frequency neighboring cells and sending it to the UE in advance. The UE then uses this pre-provided information to perform measurements on intra-frequency cells and determine proximity without needing to constantly activate the inter-frequency compressed mode, thereby maintaining detection accuracy while improving data transmission performance.
Solution Approach 2:
The patent introduces an intermediary mechanism where the network side acts as a mediator by providing proximity detection information and measurement configurations to the UE. This intermediary approach allows the UE to infer inter-frequency cell proximity through intra-frequency measurements, avoiding the need for continuous inter-frequency measurement and compressed mode activation, thus resolving the contradiction between detection accuracy and data transmission performance.
3Use of energy by moving object
If the UE performs measurement on intra-frequency cells using proximity detection information, then the power consumption is reduced and data transmission performance is improved, but the complexity of the measurement process increases
Solution Approach 1:
The patent implements a feedback mechanism where the network side provides proximity detection information based on network conditions and UE measurements, and the UE feeds back measurement results. This feedback loop allows the system to optimize measurement processes dynamically, reducing power consumption while managing complexity through adaptive control rather than fixed complex procedures.
Solution Approach 2:
The patent utilizes parameter changes by adjusting measurement configurations, thresholds, and proximity detection criteria based on network conditions and UE capabilities. This dynamic parameter adjustment simplifies the measurement process under different conditions while maintaining detection accuracy, resolving the contradiction between reduced power consumption and measurement process complexity.
Data Source
AI summary
The present invention provides an inter-frequency neighboring cell proximity detection method, an inter-frequency neighboring cell measurement method, a radio network controller, and user equipment. In this method, a signal of an intra-frequency cell of a current serving cell of a user equipment is measured, a measurement result is compared with proximity detection information of an inter-frequency neighboring cell, and reporting may be performed when the information is met.