Multi-Source Data Signaling for Low-PAPR Millimeter-Wave Links
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Solution Overview
Problem
The use of higher frequencies in wireless communication systems, such as millimeter waves, poses challenges related to physical properties and timing, particularly with ubiquitous beamforming and new waveforms, which need to be addressed for effective data signaling.
Innovation Solution
A method and apparatus for data signaling in wireless communication networks utilizing multiple transmission sources, where modulation symbols are mapped in c-tuples to represent code blocks, allowing for multi-layer transmission and transmission diversity, including interlinking and non-interlinking modulations to manage low Peak to Average Power Ratio (PAPR) and enhance signal robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If higher frequencies (millimeter waves) are used for wireless communication, then large bandwidths are available for communication, but physical properties and timing problems arise that complicate data signaling
Solution Approach 1:
The data signaling is segmented into multiple code blocks, which are then mapped to multiple transmission sources in a structured manner using c-tuples. This segmentation allows the system to handle large bandwidths by dividing the data stream into manageable units that can be processed and transmitted through multiple sources simultaneously, reducing the complexity of managing the entire data stream at once.
Solution Approach 2:
The patent introduces a new dimension in data signaling by mapping modulation symbols to multiple transmission sources using c-tuples, where c represents the number of code blocks. This multi-dimensional mapping approach (across code blocks, modulation symbols, and transmission sources) provides a systematic framework to handle millimeter wave communication challenges, transforming the complex single-dimension problem into a multi-dimensional solution space.
2Speed
If beamforming with small beams is used ubiquitously, then directional communication is achieved, but additional complications arise in data signaling
Solution Approach 1:
The c-tuple mapping structure serves multiple functions simultaneously: it organizes code blocks, maps modulation symbols to transmission sources, and accommodates different beamforming configurations. This universal framework can handle both beamformed and non-beamformed transmissions, making the system versatile and reducing the need for separate signaling mechanisms for different beamforming scenarios.
Solution Approach 2:
The patent utilizes parameter changes in the mapping structure, where the value of c (number of code blocks) can be adjusted based on channel conditions, modulation type, and beamforming requirements. This flexibility allows the system to adapt to different beamforming complexities by changing the mapping parameters rather than requiring fundamentally different signaling approaches.
3Reliability
If multiple transmission sources are used for data signaling, then transmission diversity and robustness are improved, but mapping complexity increases
Solution Approach 1:
By segmenting the modulation symbol sequence into c-tuples and mapping each tuple to a specific transmission source, the patent creates a structured and systematic mapping process. This segmentation approach reduces mapping complexity by breaking down the complex task of distributing symbols across multiple sources into a repeatable pattern based on the tuple structure and source indices.
Solution Approach 2:
The mapping structure is designed to be self-organizing, where the c-tuple formulation inherently determines the distribution pattern across transmission sources. The system automatically manages the complexity through the mathematical structure of the mapping, reducing the need for external control mechanisms and simplifying the overall process while maintaining transmission diversity.
4Use of energy by moving object
If low PAPR modulation is used, then power efficiency is improved, but signal robustness against interference may be reduced
Solution Approach 1:
The patent combines multiple code blocks and their corresponding modulation symbols into a unified c-tuple mapping structure that is transmitted across multiple sources. This merging approach allows low PAPR modulation schemes to benefit from transmission diversity, where the combined signal across multiple sources provides robustness against interference that would otherwise affect single-source transmissions.
Solution Approach 2:
The c-tuple mapping structure acts as an intermediary between the low PAPR modulation symbols and the multiple transmission sources. It organizes and distributes the symbols in a way that preserves the low PAPR characteristics while introducing diversity through the multi-source transmission, thereby maintaining both power efficiency and signal robustness.
Data Source
AI summary
There is disclosed a method of operating a transmitting radio node in a wireless communication network. The method includes transmitting data signaling utilising a plurality of transmission sources, wherein the data signaling represents a plurality of code blocks. Modulation symbols of a modulation symbol sequence are mapped to the plurality of transmission sources in c-tuples, the modulation symbol sequence representing the plurality of code blocks in which c is dependent on the modulation used for transmitting the signaling. The disclosure also pertains to related devices and methods.