Satellite Proxy Service for Bandwidth Conservation

Solution Overview

Problem

Satellite communication systems experience bandwidth wastage due to frequent TCP connection establishment and retransmissions, leading to communication link congestion and poor user Internet experience, especially in areas with high latency and network instability.

Innovation Solution

Deploying proxy service apparatuses on end and master stations to intercept and manage resource access requests via a shared satellite network communication channel, reducing the need for repeated TCP connection establishments and optimizing bandwidth usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If TCP connection is established through three-way handshake for each resource access request, then reliable communication is ensured, but satellite bandwidth is wasted and communication link congestion occurs due to frequent connection establishment and retransmissions

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidbandwidth waste

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies preliminary action by establishing a persistent TCP connection between the gateway and proxy service apparatus before resource access requests are made. This pre-established connection eliminates the need for frequent three-way handshakes during subsequent resource access, thereby reducing bandwidth waste while maintaining communication reliability through the persistent connection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces a proxy service apparatus as an intermediary between the gateway and the resource server. The proxy establishes and maintains the TCP connection with the resource server, intercepting resource access requests and managing the connection. This intermediary approach allows the gateway to avoid direct repeated connection establishments while ensuring reliable resource delivery.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If TCP protocol is used for resource transmission, then data transmission reliability is improved, but communication delay increases and network instability causes constant retransmissions

Engineering Contradiction:

Improvedata transmission reliabilityVSAvoidcommunication delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by establishing a persistent TCP connection between the gateway and proxy service apparatus before resource access requests are made. This pre-established connection eliminates the need for frequent three-way handshakes during subsequent resource access, thereby reducing bandwidth waste while maintaining communication reliability through the persistent connection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces a proxy service apparatus as an intermediary between the gateway and the resource server. The proxy establishes and maintains the TCP connection with the resource server, intercepting resource access requests and managing the connection. This intermediary approach allows the gateway to avoid direct repeated connection establishments while ensuring reliable resource delivery.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If satellite bandwidth is used for resource access, then communication coverage is extended to offshore and remote areas, but communication cost increases due to bandwidth waste

Engineering Contradiction:

Improvecommunication coverageVSAvoidbandwidth cost

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent applies preliminary action by establishing a persistent TCP connection between the gateway and proxy service apparatus before resource access requests are made. This pre-established connection eliminates the need for frequent three-way handshakes during subsequent resource access, thereby reducing bandwidth waste while maintaining communication reliability through the persistent connection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces a proxy service apparatus as an intermediary between the gateway and the resource server. The proxy establishes and maintains the TCP connection with the resource server, intercepting resource access requests and managing the connection. This intermediary approach allows the gateway to avoid direct repeated connection establishments while ensuring reliable resource delivery.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11558111B2Satellite network communication with proxy service apparatus for acquiring targeted resources

Publication Date: 2023.01.17 ZTE CORP

AI summary

Provided is a satellite network communication method. The method includes: establishing for a user equipment a satellite network communication channel between a proxy service apparatus on an end station side and a proxy service apparatus on a master station side; intercepting a resource access request sent by the UE; and when a target resource corresponding to the resource access request does not locally exist, acquiring the target resource through the satellite network communication channel and sending the target resource to the user equipment. Further provided are a proxy service apparatus and a gateway.