Virtual Intra-Frequency Measurement for UE Performance
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Solution Overview
Problem
In frequency division duplex (FDD) systems, the imbalance in uplink (UL) and downlink (DL) traffic leads to idle UL resources, and inter-frequency measurements for handovers are inefficient, affecting user equipment (UE) performance by requiring longer measurement periods and interrupting data reception.
Innovation Solution
The method involves a user equipment (UE) receiving measurement control information from a base station to perform virtual intra-frequency measurements using a second receiver on a non-working frequency band, reducing the impact on UE performance by leveraging the higher efficiency of intra-frequency measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If inter-frequency measurement is performed for handover from FDD base station to TDD LPN, then handover capability is enabled, but measurement period increases and UE performance deteriorates
Solution Approach 1:
The patent introduces a frequency translation mechanism that acts as an intermediary, converting the inter-frequency measurement problem into an intra-frequency measurement problem. The UE translates the TDD LPN's uplink frequency (which it needs to measure) to its own downlink frequency band, allowing it to perform measurements as if they were intra-frequency, thus reducing measurement period and improving performance while maintaining handover capability.
2Adaptability or versatility
If inter-frequency measurement is performed for handover from FDD base station to TDD LPN, then handover capability is enabled, but UE data reception is interrupted
Solution Approach 1:
The frequency translation mechanism serves as an intermediary that allows the UE to measure the TDD LPN's uplink signal on its own downlink frequency band without stopping data reception. By translating the measurement frequency to match the UE's operating frequency, the system enables continuous data reception while performing necessary measurements for handover.
3Productivity
If UL redundant resources are utilized by deploying TDD cell at LPN, then UL frequency band utilization rate increases, but inter-frequency interference occurs
Solution Approach 1:
The patent changes the frequency parameter relationship between the measured signal and the UE's operating band. By translating the TDD LPN's uplink frequency to the FDD base station's downlink frequency, the system allows the UE to measure the signal without experiencing inter-frequency interference, while still enabling the TDD LPN to utilize UL redundant resources effectively.
Data Source
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AI summary
Embodiments of the present invention disclose a data measurement method and apparatus and a communication system, for reducing an impact of a measurement process on UE performance. The method in an embodiment of the present invention includes: receiving, by a user equipment UE, measurement control information sent by a base station, where the measurement control information includes frequency information of a virtual intra-frequency cell, the virtual intra-frequency cell is a cell on a frequency layer corresponding to a second receiver of the UE, and the second receiver is used for measurement only, but not used for data receiving; and starting, by the UE according to the measurement control information, the second receiver to perform virtual intra-frequency measurement. The embodiments of the present invention further provide a data measurement apparatus and a communication system. The embodiments of the present invention can effectively reduce an impact of a measurement process on UE performance.