Mobile Router Seamless Roaming Auto-Discovery

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Solution Overview

Problem

Current wireless communication systems face challenges in providing seamless mobility across dissimilar networks while managing administrative burdens, cost, and access control, particularly in supporting both statically and dynamically addressed mobile hosts and ensuring uninterrupted network identity during migration between mobile routers.

Innovation Solution

A mobile router system that enables automatic discovery and registration of mobile hosts, allowing seamless roaming across multiple networks, supporting both static and dynamic IP addressing, and enforcing access control by maintaining a table of registered hosts and using DHCP and ARP protocols to manage IP addresses and network access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If mobile hosts roam across dissimilar networks, then network coverage and accessibility are improved, but maintaining constant local network identity and seamless mobility becomes difficult

Engineering Contradiction:
Improvenetwork coverageVSAvoidnetwork identity continuity
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The mobile router acts as an intermediary between mobile hosts and dissimilar networks. It maintains a translation layer that maps dynamic network addresses to constant local network identities, allowing hosts to roam across networks while preserving their identity within the mobile network. The router handles address translation and routing, decoupling the host's local identity from the external network addressing.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If automatic discovery and registration of mobile hosts is implemented, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improveautomatic host discoveryVSAvoidrouter system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

Mobile hosts perform self-registration with the mobile router using standard DHCP and ARP protocols. When a host joins the network, it automatically requests an IP address via DHCP, and the router automatically registers the host's address mapping. This self-service approach eliminates manual configuration while using well-understood standard protocols, balancing automation with manageable complexity.

Inventive Principle:
Principle #25Self-service

3Reliability

If access control is enforced through registered host tables, then network security is improved, but administrative burden increases

Engineering Contradiction:
Improvenetwork securityVSAvoidadministrative burden
Core Design Contradiction:
ReliabilityVSExtent of automation

Solution Approach 1:

The mobile router implements automatic feedback mechanisms where host registration and deregistration are tracked dynamically. When hosts join or leave the network, the router automatically updates its registered host table. This automated feedback loop maintains security through constant awareness of active hosts without requiring manual administrative intervention for each connection event.

Inventive Principle:
Principle #23Feedback

4Adaptability or versatility

If both static and dynamic IP addressing are supported, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveaddressing flexibilityVSAvoidrouting complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The mobile router is designed with multi-functionality to handle both static and dynamic IP addressing schemes simultaneously. It implements a universal registration mechanism that works regardless of whether hosts use static or dynamic addresses. The router's host table and translation layer are designed to accommodate both addressing types through a unified approach, allowing flexible support without requiring separate complex systems for each addressing mode.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS9894514B2Multi-network seamless roaming mobile router with auto-discovery and migration of downstream devices on the mobile network
Publication Date: 2018.02.13 MOBILE SONIC INC
  • US9894514B2 patent drawing
  • US9894514B2 patent drawing
  • US9894514B2 patent drawing

AI summary

Method for discovering a mobile host that roams across wireless networks, each wireless network comprising a mobile router and the mobile routers being coupled to a gateway. The method includes receiving a packet comprising an address of the mobile host within one of the wireless networks; and determining whether the address of the mobile host resolves to be within a subnet of mobile hosts manageable by the mobile router of the one wireless network. When both the address of the mobile host resolve to be within the subnet of mobile hosts manageable by the mobile router of the one wireless network, the method further includes adding the address of the mobile host to a table of registered mobile hosts for the mobile router of the one wireless network, the packet comprising a dynamic host configuration protocol (DHCP) lease request for the mobile host.