Wireless Communication Coordination via Terminal Relay

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Solution Overview

Problem

In coordinated transmission of base stations, non-ideal backhaul links cause information interaction delays, leading to reduced reliability and increased redundancy in wireless communication systems, particularly in 5G networks.

Innovation Solution

The method involves transmitting data units through a first air interface, receiving confirmation messages to ensure correct reception, and using air interfaces to indicate successful data transfer, thereby reducing transmission delay and redundancy between coordinated base stations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If base stations use non-ideal backhaul links for coordinated transmission, then inter-cell coordination can be achieved, but transmission delay increases and real-time coordination reliability deteriorates

Engineering Contradiction:

Improvecoordination reliabilityVSAvoidtransmission delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent introduces a terminal device as an intermediary to relay coordination information between base stations. Instead of direct backhaul link communication between base stations, the terminal receives data from one base station and forwards coordination information to another base station via air interface, thereby avoiding the delay and reliability issues of non-ideal backhaul links.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the physical backhaul link connection between base stations with wireless air interface communication. By using the air interface (electromagnetic wave transmission) instead of the constrained backhaul link, the system achieves lower latency and higher reliability for coordination information transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If base stations use Xn interface for information interaction, then coordinated transmission can be established, but transmission redundancy increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidredundancy overhead

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent extracts and removes the redundant Xn interface communication path from the system. By eliminating the need for base stations to exchange coordination information via the Xn interface, the patent reduces transmission redundancy while maintaining coordination reliability through the terminal-mediated air interface approach.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20230163810A1Method and device used for wireless communication

Publication Date: 2023.05.25 APOGEE 5G GLOBAL LLC

AI summary

The present application provides a method and device for wireless communications. A first node at least transmits a first data unit set via a first air interface; receives a first message via the first air interface, the first message being used to determine that at least the first data unit set is correctly received; at least transmits the first data unit set to a second node through a first backhaul link; transmits a second message via a second air interface, the second message being used to indicate the first data unit set; wherein the second node is co-located with a receiver of the second message, and the second node and the receiver of the second message are respectively not co-located with a transmitter of the first message. The present application effectively supports the coordinated transmission between base stations.