Segment-Interleaved Data Transmission for URAT Signal Separation
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Solution Overview
Problem
In uncoordinated non-orthogonal multiple access (URAT) technology, the challenge is to separate transmission signals between terminals effectively to enable a base station to accurately detect data from each terminal, as multiple terminals share resources without network coordination.
Innovation Solution
The solution involves segmenting and bit padding encoded bits to obtain K bit segments, interleaving them, and modulating encoded and padded bit segments into data and empty symbols, with DMRS symbols transmitted on resource elements (REs) to facilitate accurate detection by the network device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals share resources in URAT technology, then the system supports a huge quantity of terminals with reduced delay, but the transmission signals between terminals cannot be separated effectively, making accurate detection difficult
Solution Approach 1:
The patent applies segmentation by dividing the encoded bits into multiple bit segments (K segments including M encoded bit segments and K-M padded bit segments). This segmentation allows the base station to process and detect signals from different terminals separately, improving detection accuracy while maintaining support for multiple terminals. Each terminal's signal is segmented and padded independently, enabling effective separation of mixed signals.
Solution Approach 2:
The patent implements local quality by applying different operations to different parts of the signal. Specifically, encoded bit segments are modulated into data symbols while padded bit segments are modulated into empty symbols. This local differentiation allows the base station to identify and detect actual data signals while ignoring empty symbol positions, thereby improving detection accuracy in a multi-terminal environment.
2Productivity
If traditional random access and transmission procedures are used, then the procedures are independent and simple, but they cannot support a huge quantity of terminals efficiently
Solution Approach 1:
The patent merges the initial access procedure and data transmission procedure into a single unified URAT procedure. Instead of treating access and transmission as separate independent steps, the patent combines them so that terminals perform both access and data transmission simultaneously using the same resource blocks. This merging enables the system to support a huge quantity of terminals efficiently while managing complexity through integrated processing.
3Measurement precision
If bit segments are interleaved and padded with empty symbols, then transmission signals between terminals are separated effectively, but the processing complexity increases
Solution Approach 1:
The patent applies preliminary action by performing bit segment interleaving and empty symbol padding at the terminal side before transmission. This preprocessing ensures that signals from different terminals are already separated and structured in a detectable format when received at the base station. By doing the separation work in advance at the terminals, the base station's detection complexity is reduced despite the increased processing at the terminal side.
Data Source
AI summary
Provided in the embodiments of the present disclosure are a data transmission method, device and apparatus, and a storage medium, wherein the method is applied to a terminal. The method comprises: performing segmentation and bit filling processing on a coded bit, so as to obtain K bit segments, wherein the K bit segments comprise M coded bit segments and (K−M) filling bit segments, K and M being positive integers, and K being greater than M; performing interleaving processing on the K bit segments in units of segments, modulating each interleaved coded bit segment into one or more data symbols to be transmitted, and modulating each interleaved filling bit segment into a blank symbol; and sending the data symbol and the blank symbol to a network device.