Inter-ENB Carrier Aggregation Measurement Cycle Configuration
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Solution Overview
Problem
The existing LTE mobile communication systems face limitations in carrier aggregation, particularly in scenarios involving overlapping pico cells and macro cells, where pico cells cannot be aggregated with macro cells, leading to restricted applicability and potential performance issues.
Innovation Solution
A method and apparatus that enable User Equipment (UE) to transmit and receive data using multiple carriers by determining measurement cycles based on discontinuous reception cycles, allowing for inter-ENB carrier aggregation and improving transmission/reception speed by aggregating carriers between different base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If intra-ENB carrier aggregation is used, then implementation is simple and standardized, but applicability is limited and pico cells cannot be aggregated with macro cells
Solution Approach 1:
The patent extends carrier aggregation functionality from intra-ENB to inter-ENB scenarios, making the system universal across different base station configurations. The UE is configured to aggregate carriers from multiple ENBs (macro cell and pico cell), enabling the same carrier aggregation mechanism to function across different network architectures and cell types.
Solution Approach 2:
The patent introduces measurement reports and configuration messages as intermediaries between the UE and multiple ENBs. The UE measures reference signals from both macro and pico cells, reports measurements to the network, and receives configuration messages that enable inter-ENB carrier aggregation, thus mediating the complex interaction between multiple base stations and the terminal.
2Measurement precision
If measurement cycle is shortened to improve measurement accuracy, then serving cell and peripheral cell measurement precision increases, but power consumption increases
Solution Approach 1:
The patent implements periodic measurements at configured measurement cycles for both serving and peripheral cells. The measurement cycle is configured by the network based on mobility conditions, allowing the UE to perform measurements periodically rather than continuously. This periodic action maintains measurement precision while significantly reducing power consumption compared to continuous monitoring.
Solution Approach 2:
The patent dynamically adjusts measurement configurations based on mobility conditions. When the UE detects high mobility (e.g., handover scenarios), the network configures shorter measurement cycles to maintain accuracy. When mobility is low, longer measurement cycles are configured to reduce power consumption. This dynamic adaptation allows the system to optimize the trade-off between measurement precision and energy usage.
Data Source
AI summary
A method for transmitting and receiving data, by a terminal, using multiple carriers in a mobile communication system according to an embodiment of the present invention comprises the steps of: when measurement is received from a reference base station, checking whether the measurement object indicates serving cells of the terminal; and if the measurement object indicates the serving cells of the terminal, setting a measurement cycle using a discontinuous reception cycle of corresponding cells.