Coverage Enhancing Device Frequency Selection for Channel Gain
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Solution Overview
Problem
Existing wireless communication systems face limitations in band combinations for carrier aggregation due to frequency-dependent reflection properties of coverage enhancing devices, leading to insufficient channel gain.
Innovation Solution
A method where a coverage enhancing device transmits control signalling to a network node indicating the location of at least one frequency component, such as a carrier component, to be used for an additional channel between the network node and a wireless device, allowing for selection of frequency components to achieve satisfactory channel gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coverage enhancing device is used for signal redirection, then coverage is enhanced, but channel gain becomes insufficient due to frequency dependent reflection properties
Solution Approach 1:
The patent changes the frequency parameter by selecting specific frequency components (carrier components) that are suitable for the coverage enhancing device's reflection characteristics. The network node receives information about available frequency components from the coverage enhancing device and selects combinations that achieve satisfactory channel gain while maintaining coverage enhancement.
2Device complexity
If carrier aggregation is performed with limited band combinations, then device complexity is reduced, but transmission bandwidth is limited
Solution Approach 1:
The patent segments the frequency spectrum into multiple independent frequency components (carrier components) that can be separately selected and aggregated. The coverage enhancing device provides information about available frequency components, and the network node selects appropriate combinations, enabling flexible bandwidth aggregation without requiring complex pre-configured band combinations.
Solution Approach 2:
The patent introduces dynamic selection of frequency component combinations based on current channel conditions and coverage enhancing device capabilities. Rather than using fixed band combinations, the system adaptively selects which frequency components to aggregate, allowing the transmission bandwidth to be dynamically adjusted according to available spectrum resources and device capabilities.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enhances transmission bandwidth and utilizes non-contiguous spectrum resources while ensuring sufficient channel gain in both the additional and existing channels.
Implementation Method 1
the coverage enhancing device may have frequency dependent reflection properties for pairs of frequency components. Hence, the reflection of the signals on frequency components
Data Source
AI summary
A method, performed by a coverage enhancing device, comprising transmitting, to a network node, control signalling indicative of a location of at least one frequency component to be used for a first channel between the network node and a wireless device. The first channel is in addition to at least a second channel between the network node and the wireless device.