Cell Management Reference Signal Adaptation for Wireless Systems
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Solution Overview
Problem
In wireless communication systems, particularly in LTE-A, efficient cell management and reference signal transmission are challenging due to the need for dynamic cell state changes and optimized resource allocation in multi-component carrier environments, especially in small cell clusters where inter-cell interference and limited resources require efficient control and management.
Innovation Solution
A method and apparatus for performing cell management that involves receiving a radio resource configuration based on a cell state, detecting reference signals, and adapting radio resource measurements. This includes distinguishing between dormant, low_active, and high_active cell states, where resource allocation and transmission periods for reference signals are adjusted accordingly to optimize efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signal transmission is performed frequently to improve detection accuracy, then measurement precision is improved, but resource consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of reference signal transmission parameters based on cell state. The base station determines cell state (dormant, low_active, high_active) and adapts reference signal resource allocation and transmission periods accordingly. This dynamic approach allows the system to optimize between measurement precision and resource consumption by matching reference signal transmission intensity to actual network conditions rather than using fixed transmission parameters.
Solution Approach 2:
The patent changes physical parameters of reference signal transmission based on cell state. Specifically, it adjusts the transmission period (time domain parameter) and resource allocation (frequency/time resource parameters) of reference signals. When cell state transitions between dormant, low_active, and high_active states, the system modifies these parameters to achieve optimal balance between detection accuracy and resource efficiency.
2Productivity
If cell state changes are implemented to optimize resource allocation, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent segments cell operation into distinct states (dormant, low_active, high_active), each with predetermined resource allocation characteristics. This segmentation allows the system to manage complexity by defining discrete, manageable states rather than continuous optimization, making cell management more tractable while still achieving improved resource allocation efficiency through state-based policies.
Data Source
AI summary
A method for and apparatus for performing a cell management in a wireless communication system is provided. A wireless device detects a cell configuration based on a cell state, the cell state is determined by at least one of a number of UEs, a data offloading, a traffic pattern, and a UE mobility. The cell state includes a dormant or a low_active in which a resource for the reference signal is smaller than a resource for a high_active, and a transmission period of the reference signal when the cell state is in the dormant or the low_active is longer than a transmission period of a reference signal when a cell state is in the high_active. Thus, a cell specific RSs such as CRS, SIB, or paging and synchronization transmission as overhead in a cell can be minimized and controlled based on the active UEs.