MTC Cell Measurement Bandwidth Configuration
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Solution Overview
Problem
In the context of machine type communication (MTC), existing methods face challenges in improving measurement efficiency for MTC cells without affecting non-MTC cells, particularly due to differences in bandwidth and reference symbol configurations.
Innovation Solution
A communication method where a base station sets different measurement bandwidths for MTC and non-MTC cells and instructs user equipment to measure MTC cells using specific reference symbols and subframes, optimizing measurement accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single measurement bandwidth is used for both MTC and non-MTC cells, then device complexity is reduced, but measurement precision deteriorates because MTC cells require narrowband measurement while non-MTC cells require wideband measurement
Solution Approach 1:
The patent segments the measurement bandwidth configuration by cell type, allocating different measurement bandwidths to MTC cells and non-MTC cells separately. This allows MTC user equipment to use narrowband measurement for MTC cells while using wideband measurement for non-MTC cells, thereby improving measurement precision for both cell types without requiring a single complex configuration.
Solution Approach 2:
The patent applies local quality by tailoring the measurement bandwidth to the specific requirements of each cell type. MTC cells receive narrowband measurement configuration optimized for their characteristics, while non-MTC cells receive wideband measurement configuration, ensuring that each cell type is measured with the appropriate quality and precision for its specific needs.
2Device complexity
If MTC cells use the same reference symbol configuration as non-MTC cells, then system complexity is reduced, but measurement precision deteriorates due to bandwidth mismatches
Solution Approach 1:
The patent segments the reference symbol configuration by separating MTC cell reference symbols from non-MTC cell reference symbols. This allows independent optimization of reference symbol positions and structures for MTC cells, improving measurement precision while maintaining simple configurations for each segment separately.
3Speed
If MTC user equipment measures all cells using wideband measurement, then measurement speed is improved, but energy consumption increases and measurement precision for MTC cells deteriorates
Solution Approach 1:
The patent changes the measurement bandwidth parameter based on the target cell type, allowing MTC user equipment to switch between narrowband and wideband measurement modes. This enables fast narrowband measurement for MTC cells (consuming less energy) while maintaining the option for wideband measurement when needed, thereby improving measurement speed and reducing energy consumption for MTC-specific measurements.
Data Source
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AI summary
Embodiments of the present invention provide a communication method, a communications apparatus, and a communications device. The communication method includes: sending, by a base station device, at least one piece of measurement indication information to a piece of user equipment, where the measurement indication information includes first carrier information used for indicating a target carrier, at least one machine type communication MTC cell is configured on the target carrier, and the measurement indication information further includes at least one of the following information: first measurement bandwidth indication information, at least one piece of reference symbol indication information, and at least one piece of subframe indication information; and receiving, by the base station device, first measurement report information that is sent by the user equipment after the user equipment performs measurement according to the measurement indication information, and communicating with the user equipment according to the first measurement report information. By setting different measurement bandwidths for an MTC cell and a non-MTC cell, measuring the MTC cell according to a reference symbol on a side corresponding to the MTC cell, and listening on and measuring only a subframe including the MTC cell, a measurement effect of the MTC cell can be improved.