Uplink Feedback Resource Allocation for Collision Avoidance

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Solution Overview

Problem

In 5G systems, unscheduled uplink access by terminal devices without network scheduling instructions leads to potential collisions of uplink access data packets and challenges in notifying devices about signal reception, affecting access performance and feedback information accuracy.

Innovation Solution

The method involves using a first resource associated with each terminal device's information for transmitting acknowledgment or feedback information, allowing unique resource allocation to prevent collisions and enabling timely feedback on uplink transmission results.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If terminal devices perform unscheduled uplink access without network scheduling instructions, then uplink access efficiency is improved, but collisions of feedback information occur

Engineering Contradiction:

Improveuplink access efficiencyVSAvoidfeedback information accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The feedback resource pool is segmented into multiple individual resources, each uniquely associated with a terminal device through device-specific parameters (such as device ID, uplink resource index, and orthogonal cover code). This segmentation allows each terminal to access feedback resources independently without collision, resolving the contradiction between unscheduled access efficiency and feedback reliability

Inventive Principle:

Principle #1Segmentation

2Loss of time

If terminal devices send uplink signals without scheduling instructions, then access latency is reduced, but feedback resource allocation becomes complex

Engineering Contradiction:

Improveaccess latencyVSAvoidfeedback resource allocation complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

Each terminal device autonomously determines its feedback resource by calculating parameters based on its own device-specific information (device ID, uplink resource index, orthogonal cover code) without requiring network scheduling instructions. This self-service mechanism reduces access latency while the standardized calculation formula keeps the allocation complexity manageable

Inventive Principle:

Principle #25Self-service

3Reliability

If unique feedback resources are allocated to each terminal device, then feedback information collision is avoided, but resource management overhead increases

Engineering Contradiction:

Improvefeedback information accuracyVSAvoidresource management overhead

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The network device pre-configures feedback resource parameters (resource pool size, orthogonal cover code sequences, resource indication formulas) and distributes them to terminal devices. Each terminal then copies this template and generates its specific feedback resource by substituting its own device-specific parameters, avoiding the need for complex real-time resource management while ensuring unique resource allocation

Inventive Principle:

Principle #26Copying

Data Source

PatentUS10779324B2Method of transmitting information, network device and computer-readable medium

Publication Date: 2020.09.15 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

A method of transmitting information includes: detecting an uplink signal sent by a terminal device; and sending acknowledgment information to the terminal device through a first resource if the uplink signal is detected, wherein the first resource is associated with information of the terminal device. With the method of transmitting information, a network device and a terminal device according to embodiments of the present disclosure, collision of feedback information between different terminal devices can be avoided.