Uplink Data Block Position Configuration for 5G URLLC Latency

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Solution Overview

Problem

In 5G New Radio (NR) systems, the Grant free scheduling mode for Ultra-Reliable Low Latency Communication (URLLC) faces challenges with blind detection complexity and limited resource dynamic occupation, leading to potential delays in service transmission, which affects user experience.

Innovation Solution

A method where a network device sends configuration information to a terminal device indicating the starting and end positions of uplink data block transmission, allowing for non-dynamic resource scheduling, reducing blind detection complexity, and optimizing resource usage based on service delay requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If Grant free scheduling mode is adopted for URLLC, then transmission latency is reduced and effective transmission time is increased, but blind detection complexity of network device increases

Engineering Contradiction:

Improvetransmission latencyVSAvoidblind detection complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The patent segments the uplink data transmission by dividing it into multiple blocks with distinct starting and end positions. Each data block is independently configured and transmitted, allowing the network device to process and detect them separately, thereby reducing blind detection complexity while maintaining low latency transmission

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network device performs preliminary configuration by pre-defining starting and end positions for uplink data blocks before actual transmission occurs. This preliminary action reduces the need for dynamic resource allocation and blind detection during transmission, resolving the contradiction between low latency and detection complexity

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If resources are occupied dynamically in Grant free mode, then resource utilization flexibility is improved, but system capacity decreases

Engineering Contradiction:

Improveresource utilization flexibilityVSAvoidsystem capacity

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent applies local quality by configuring specific starting and end positions for different uplink data blocks based on local service requirements. Each data block can be transmitted with optimized resource allocation tailored to its specific needs, maintaining flexibility while improving overall system capacity through efficient resource utilization

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the parameter of resource allocation from fully dynamic to semi-static with predefined starting and end positions. This parameter change maintains adaptability for different services while reducing resource overhead and improving system capacity by eliminating redundant dynamic allocation signaling

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11800508B2Method and device for transmitting and receiving uplink data

Publication Date: 2023.10.24 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

Disclosed are a method and device for transmitting data. The method includes: a network device sending configuration information to a terminal device, the configuration information including at least one of the following: information for indicating a starting position for transmission of an uplink data block, information for indicating an end position for transmission of an uplink data block, and information for configuring a reference signal for transmission of an uplink data block; and according to the configuration information, the network device receiving an uplink data block sent by the terminal device.