Short Burst Channel Multiplexing via Sequence Grouping
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Solution Overview
Problem
Current wireless communication systems, particularly in new radio (NR) technologies, face challenges in efficiently processing short burst transmissions, which are crucial for supporting diverse wireless communication services with varying latency and reliability requirements, such as eMBB, mmW, mMTC, and URLLC, within the same subframe.
Innovation Solution
The implementation of advanced channelization techniques for short PUCCH and PUSCH channels, including shifted sequences and sequence hypothesis grouping, allows for efficient multiplexing and enhanced receiver techniques to convey 1 or 2 bits of information, enabling improved communication protocols and resource allocation in wireless networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If advanced channelization techniques for short PUCCH and PUSCH channels are implemented, then communication efficiency and multiplexing capability are improved, but system complexity and processing requirements increase
Solution Approach 1:
The patent divides the short burst transmission channel into separate PUCCH and PUSCH channels with dedicated resource allocations. PUCCH is segmented for control information (ACK/NACK, SR, CSI) while PUSCH handles data transmissions. This segmentation allows independent optimization of each channel type, improving overall communication efficiency while managing system complexity through modular design.
Solution Approach 2:
The patent introduces sequence hypothesis grouping in the frequency domain, where multiple sequence hypotheses are grouped together to convey multiple bits of information simultaneously. This dimensional approach allows 1 or 2 bits of information to be transmitted through sequence selection, enhancing multiplexing capability without requiring additional time or frequency resources, thus improving productivity without proportionally increasing complexity.
2Productivity
If multiple signals are transmitted simultaneously in the same subframe, then resource utilization is improved, but interference between signals increases
Solution Approach 1:
The patent applies local quality by allocating specific resource elements, frequency ranges, and time slots to different signal types (PUCCH, PUSCH, reference signals) within the same subframe. Each signal type receives optimized local resources tailored to its requirements, allowing simultaneous transmission while minimizing interference through spatial and spectral separation.
Solution Approach 2:
The patent introduces reference signals as intermediary elements that facilitate channel estimation and signal detection. These reference signals act as mediators between transmitted signals and receiver processing, enabling accurate detection of simultaneously transmitted PUCCH and PUSCH channels by providing known sequences for channel characterization, thereby managing interference through improved signal separation.
3Measurement precision
If short burst transmissions are processed with enhanced receiver techniques, then measurement precision and reliability are improved, but processing time and computational load increase
Solution Approach 1:
The patent employs preliminary action by pre-defining sequence hypotheses and grouping them before transmission. The receiver utilizes these pre-grouped hypotheses to rapidly evaluate possible transmitted sequences, avoiding the need for exhaustive search during reception. This preliminary structuring of sequence spaces enables fast and accurate channel estimation and signal detection, improving measurement precision without excessive processing time.
Data Source
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AI summary
Certain aspects of the present disclosure relate to methods and apparatus for short uplink burst designs. In some cases, one sequence, from a plurality of sequences, may be transmitted in multiple tones of at least one short burst symbol conveying at least one bit of information. The plurality of sequences may have the same values at a first set of common tone locations for demodulation reference signals (DMRS) and groups of sequences from the plurality of sequences may be identified, each sequence in a group having a second set of common tone locations for DMRS.