Blockchain Satellite Nodes Reduce Handover Overhead

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Solution Overview

Problem

Frequent satellite handovers in satellite communication systems result in high network overheads due to the need for frequent data exchanges between satellites and ground segment gateways, which is inefficient and resource-intensive.

Innovation Solution

Implementing a data processing method using blockchain nodes to verify and authenticate terminal camping information, allowing the terminal to camp on a target cell without gateway participation by using point-to-point transmission and consensus mechanisms within the blockchain network, thereby reducing the need for data exchange between satellites and gateways.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If frequent satellite handover is performed to enable terminal mobility, then terminal connectivity is improved, but network overhead increases due to frequent data exchanges between satellites and gateways

Engineering Contradiction:
Improveterminal connectivityVSAvoidnetwork overhead
Core Design Contradiction:
Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent extracts the handover verification function from the gateway and implements it directly at the satellite level through blockchain technology. Each satellite node independently verifies handover requests using blockchain consensus mechanisms, eliminating the mandatory gateway involvement in the verification process. This extraction reduces the data exchange burden on gateways and minimizes network overhead during frequent handovers.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the traditional mechanical communication protocol between satellites and gateways with a blockchain-based distributed verification system. Instead of relying on centralized gateway authentication, the system uses cryptographic hashing, digital signatures, and consensus algorithms to verify handover requests. This substitution eliminates the need for frequent gateway data exchanges while maintaining secure authentication.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If traditional gateway-based handover verification is used, then authentication reliability is maintained, but data exchange frequency increases causing high network overhead

Engineering Contradiction:
Improveauthentication reliabilityVSAvoiddata exchange process
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements self-service authentication where satellite nodes independently perform handover verification using their own blockchain instances. Each satellite node maintains a local copy of the blockchain and autonomously verifies handover requests through consensus mechanisms without requiring gateway intervention. This self-service approach maintains authentication reliability while significantly reducing the complexity of gateway data exchange processes.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent adds a new dimension to the authentication process by introducing blockchain-based distributed verification. Instead of a single-point gateway authentication, the system distributes authentication capabilities across multiple satellite nodes, each maintaining an independent blockchain. This dimensional change from centralized to distributed authentication maintains reliability while reducing network overhead through parallel verification processes.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11973880B2Data processing method and data processing device
Publication Date: 2024.04.30 HUAWEI TECH CO LTD
  • US11973880B2 patent drawing
  • US11973880B2 patent drawing
  • US11973880B2 patent drawing

AI summary

A data processing method for a data processing system having a first communications node and a second communications node where the first communications node corresponds to a first blockchain node and the second communications node corresponds to a second blockchain node that maintains a same block chain as the first blockchain node, the method including obtaining, by the first communications node, to-be-verified data when a terminal camps on a target cell, where the to-be-verified data is obtained based on camping information of the terminal, and the target cell is a cell within signal coverage of the first communications node sending, by the first communications node, the to-be-verified data to the second communications node, so that the second communications node verifies the to-be-verified data based on the second blockchain node, and obtaining, by the first communications node, a target block if the verification succeeds.