Nested Common Sequence Pool for Non-Coherent Wireless Transmissions
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Solution Overview
Problem
Wireless communication networks face interference and performance degradation due to increasing demand for mobile broadband access, leading to congested networks and reduced user experience, especially in scenarios where base stations and user equipment encounter interference from neighboring transmitters.
Innovation Solution
Implementing a common sequence pool with a nested structure for non-coherent transmissions, allowing different length information bit streams to map to the same sequences, thereby enabling efficient encoding and decoding without the need for dedicated codebooks or reference signals, which improves processing efficiency and resilience in low signal-to-noise ratio conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate codebooks are used for different bit stream lengths, then encoding accuracy is improved, but device complexity and overhead increase
Solution Approach 1:
The patent merges multiple separate codebooks for different bit stream lengths into a single unified codebook. The unified codebook contains sequences of different lengths, where each sequence length corresponds to a specific bit stream length. This eliminates the need for separate codebooks while maintaining the ability to accurately encode variable length bit streams, thus reducing device complexity and overhead while preserving encoding accuracy.
Solution Approach 2:
The unified codebook serves multiple functions by accommodating bit streams of various lengths within a single structure. Instead of requiring dedicated codebooks for each bit stream length, the universal codebook can handle any bit stream length by selecting the appropriate sequence length, thereby simplifying codebook management and reducing system complexity.
2Measurement precision
If reference signals are used for channel estimation, then channel estimation quality is improved, but transmission overhead increases
Solution Approach 1:
The patent extracts the channel estimation function from separate reference signals and integrates it into the data transmission itself. By using the unified codebook sequences that are already modulated with channel information, the system eliminates the need for dedicated reference signals, thereby maintaining channel estimation quality while reducing transmission overhead.
Solution Approach 2:
The data transmission signals serve dual purposes: carrying information and providing channel estimation capabilities. The modulated sequences in the unified codebook inherently contain channel information that can be used for estimation, allowing the transmission to be self-sufficient without requiring additional reference signals.
3Reliability
If dedicated codebooks are used for each bit stream length, then encoding reliability is improved, but processing efficiency decreases
Solution Approach 1:
The patent combines multiple dedicated codebooks into a single unified codebook that handles all bit stream lengths. This merger maintains encoding reliability by preserving the appropriate sequence lengths for different bit stream sizes while improving processing efficiency by eliminating the need to search through and manage multiple separate codebooks, thus reducing computational overhead.
4Adaptability or versatility
If multiple separate codebooks are maintained, then adaptability to different bit stream lengths is improved, but overhead increases
Solution Approach 1:
The unified codebook achieves universality by incorporating sequences of various lengths within a single structure. This allows the system to adapt to different bit stream lengths without maintaining multiple separate codebooks, thereby preserving adaptability while significantly reducing codebook overhead and simplifying management.
Data Source
AI summary
This disclosure provides systems, methods, and devices for wireless communication that support use of common sequence pools for non-coherent transmissions according to one or more aspects. In a first aspect, a method of wireless communication includes converting, by a wireless communication device, an information bit stream to an integer value. The method also includes selecting, by the wireless communication device, a sequence from a common sequence pool based on the integer value. The common sequence pool has a nested structure of sequences which map different length information bit streams with the same most significant bit or bits to the same sequences. The method further includes transmitting, by the wireless communication device, a non-coherent transmission indicating the sequence. Other aspects and features are also claimed and described.