Communication Resource Control Using Modulation-Aware Performance Measures
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Solution Overview
Problem
Conventional communication resource control methods in telecommunications systems neglect the impact of modulation on radio channels, leading to inefficient resource allocation and lack of consideration for spatial modulation effects.
Innovation Solution
A method and arrangement for controlling communication resources by determining a performance measure that accounts for modulation and spatial modulation effects, allowing for improved characterization of communication channels and efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional radio channel characterization methods are used for communication resource control, then the control decisions are based on simple channel parameters, but the modulation effects and spatial modulation are neglected leading to inefficient resource allocation
Solution Approach 1:
The patent segments the communication channel characterization into multiple components: traditional radio channel parameters (path loss, shadowing, fading) and modulation-specific parameters (spatial radiation patterns, beamforming effects, antenna array responses). This segmentation allows each component to be analyzed and optimized independently while maintaining overall system performance.
Solution Approach 2:
The patent introduces spatial dimensions to the traditional one-dimensional channel characterization. By incorporating radiation patterns and beamforming vectors associated with multiple antennas and spatial directions, the channel model transitions from scalar parameters to multi-dimensional representations that capture spatial modulation effects.
2Reliability
If modulation symbols are distributed to multiple radiation patterns for spatial modulation, then spatial diversity and capacity are improved, but the complexity of channel characterization and resource control increases
Solution Approach 1:
The patent implements feedback mechanisms where the receiver measures channel quality indicators (CQI) that incorporate spatial modulation effects and feeds them back to the transmitter. This feedback loop enables the transmitter to adapt modulation schemes, coding rates, and resource allocation based on actual channel conditions without requiring full channel state information at the transmitter.
Solution Approach 2:
The patent changes the parameters used for channel characterization from basic signal strength metrics to composite parameters that include spatial radiation patterns, beamforming gains, and modulation-specific channel quality indicators. These transformed parameters maintain the essential information needed for resource control while simplifying the overall characterization process.
3Productivity
If performance measures sensitive to modulation are used, then communication resources can be controlled more effectively, but the measurement and calculation complexity increases
Solution Approach 1:
The patent introduces intermediary metrics such as Channel Quality Indicators (CQI) and Effective Signal-to-Interference-plus-Noise Ratio (SINR) that bridge the gap between complex channel characteristics and resource control decisions. These intermediary measures aggregate multiple channel parameters into single values that are easier to measure and use for resource allocation while retaining sensitivity to modulation effects.
Solution Approach 2:
The patent uses simplified copies or approximations of the full channel model for resource control purposes. Instead of requiring complete and accurate characterization of all spatial modulation effects, the system employs reduced-complexity models that capture the dominant performance-determining factors, enabling faster and more efficient resource allocation decisions.
Data Source
AI summary
A method, an arrangement and a controller are provided for controlling communication resources, such as spatial and temporal communication resources of a telecommunications system. A performance measure characterizing a communication channel between a first transceiver and a second transceiver is determined. The communication channel includes modulation and modulation symbols are distributed for use in at least two radiation patterns. The performance measures are sensitive to the modulation and are the basis for controlling the communication resources.