Back-to-Source Node Selection in Data Transmission

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Solution Overview

Problem

Existing data transmission technologies face inefficiencies and resource wastage due to unnecessary internal cascades when selecting back-to-source nodes using consistent hashing, particularly in scenarios with fewer nodes and subscription requests.

Innovation Solution

A method that detects whether a back-to-source node exists within a target device set upon receiving a subscription request, and if not, determines a back-to-source node from the node receiving the subscription request, thereby performing a back-to-source operation directly through this node.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If consistent hashing is used to select a back-to-source node, then the back-to-source operation can be performed, but additional internal cascades occur causing resource wastage and low efficiency

Engineering Contradiction:

Improveback-to-source efficiencyVSAvoidresource wastage

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent extracts the unnecessary intermediate cascade steps from the back-to-source operation. Instead of allowing multiple internal cascades through consistent hashing, the invention directly selects a back-to-source node from the target device set that receives the subscription request, removing the harmful intermediate steps and achieving direct resource utilization.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent inverts the conventional approach by not using consistent hashing to determine back-to-source nodes. Instead, it inverts the logic to directly select from nodes that have already received subscription requests in the target device set, reversing the traditional selection mechanism to eliminate unnecessary cascades.

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If additional internal cascades are introduced in the back-to-source operation, then more nodes can participate in stream pulling, but resource wastage increases and back-to-source efficiency decreases

Engineering Contradiction:

Improvenode participation in stream pullingVSAvoidback-to-source efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent merges the functions of multiple nodes into a single back-to-source node selection. Instead of allowing multiple independent cascade operations, it combines the selection process to identify one optimal back-to-source node from the target device set, reducing redundant operations while maintaining node participation capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent applies partial action by selecting only the necessary back-to-source node rather than enabling all possible nodes to participate through full cascades. This partial approach suffices for stream pulling while avoiding the excessive resource consumption associated with complete cascade participation.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250202995A1Back-to-source method, apparatus, electronic device and storage medium

Publication Date: 2025.06.19 BEIJING ZITIAO NETWORK TECH CO LTD

AI summary

The present disclosure relates to a back-to-source method, an electronic device and a storage medium. The method includes: detecting, in response to a node in a target device set receiving a subscription request, whether there is a back-to-source node in the target device set; determining, in response to there being no back-to-source node in the target device set, a back-to-source node from the node receiving the subscription request in the target device set, and performing a back-to-source operation through the back-to-source node.