PRACH Data Merging Across Antennas and OFDM Symbols

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Solution Overview

Problem

Existing methods for physical random access channel (PRACH) data merging in 5G NR protocols face inefficiencies in processing multiple frequencies and large data volumes, leading to resource waste, high latency, and increased CPU load.

Innovation Solution

A method and apparatus for PRACH data merging that utilizes a parsing module, reading module, merging module, and output module to process PRACH data in units of OFDM symbols, enabling time division merging and caching to improve efficiency and flexibility, supporting multiple formats and frequencies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If separate processing is performed for uplink and downlink data in related art, then data transmission can be handled, but processing overhead increases and data transmission efficiency decreases

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidprocessing overhead

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent merges uplink and downlink data processing into a unified procedure. The network device determines a single PUCCH resource for both uplink and downlink data, and the terminal uses this same resource for HARQ-ACK feedback. This consolidation eliminates the need for separate processing paths, reducing processing overhead while maintaining efficient data transmission for both directions.

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If PUCCH resources are determined separately for uplink and downlink data, then each can be optimized independently, but resource configuration complexity increases

Engineering Contradiction:

Improveresource optimization flexibilityVSAvoidresource configuration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal PUCCH resource determination mechanism that serves both uplink and downlink data transmission. The network device configures a single PUCCH resource that handles HARQ-ACK feedback for both directions, making the resource configuration system simpler while maintaining the ability to optimize for different data types through parameter adjustments within the unified framework.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If multiple PUCCH resources are configured for different data types, then data transmission reliability improves, but signaling overhead increases

Engineering Contradiction:

Improvedata transmission reliabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent combines the PUCCH resource indication for both uplink and downlink data into a single downlink data indication. The network device includes one PUCCH resource indicator in the downlink data transmission, which the terminal uses to determine the PUCCH resource for feedback. This approach maintains reliable feedback transmission while minimizing signaling overhead by avoiding redundant resource indications.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP4048016B1Data merging method and apparatus of physical random access channel, and storage medium

Publication Date: 2026.05.20 SANECHIPS TECH CO LTD

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AI summary

The present invention provides a data merging method and apparatus of a physical random access channel, and a storage medium. The method comprises: parsing task parameters of this PRACH data merging; reading PRACH data to be merged of an antenna from a PRACH data cache; carrying out, according to the task parameters, PRACH data merging between a plurality of antennas and/or RACH data merging in a PRACH of this antenna; and outputting the merged data to a shared cache.