Cooperative Network Node Training Signal Relay

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Solution Overview

Problem

In co-operative radio networks, the number of access points that can participate in data transmission is limited by the transmission power of the target node, restricting the range and thus the SINR and data rate, as only access points within range can perform the training stage.

Innovation Solution

A method where nodes listen for and verify training signals, determining a transmission filter to pre-equalize a second training signal, allowing nodes outside the target's range to participate in data transmission, thereby increasing the number of cooperating nodes and enhancing SINR and data rate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the target node transmits training signals with limited power, then nodes within range can perform training, but nodes outside the range cannot participate in data transmission

Engineering Contradiction:

Improvenumber of participating nodesVSAvoidtransmission power of target node

Core Design Contradiction:

Quantity of substanceVSUse of energy by moving object

Solution Approach 1:

Relay nodes act as intermediaries to forward training signals from the target node to distant nodes that would otherwise be out of range. These relay nodes receive the training signal from the target, process it, and retransmit it, enabling nodes beyond the target's direct transmission range to participate in the cooperative beamforming process.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The network is segmented into multiple hops or stages, where training signals propagate through intermediate relay nodes rather than requiring direct transmission from the target to all participating nodes. This segmentation allows the training process to extend beyond the target's immediate transmission range.

Inventive Principle:

Principle #1Segmentation

2Reliability

If more access points transmit simultaneously, then SINR and data rate increase, but the range of the target is limited by its transmission power

Engineering Contradiction:

ImproveSINR at targetVSAvoidrange of target

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

Relay nodes serve as mediators that extend the effective range of the target node by forwarding training signals. This allows distant nodes to join the cooperative transmission, increasing the number of transmitting access points and thereby improving SINR at the target without requiring the target to increase its transmission power.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system transitions from a single-hop direct transmission model to a multi-hop transmission model, adding a spatial dimension to signal propagation. Training signals can reach distant nodes through multiple relay stages, enabling these nodes to participate in cooperative beamforming and improve SINR through their additional transmission power.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10098015B2Method of communication in a co-operative network

Publication Date: 2018.10.09 ORANGE SA

AI summary

A communications method executed by a node of a telecommunications network, the method includes: a training step including determining a “transmission” filter as a function of a received training signal; and a data transmission step of transmitting data to a target node of the network while using the transmission filter as determined during the training step.