Wireless Area Information Server for Ad Hoc Network Interference

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Solution Overview

Problem

In environments where various wireless communication systems coexist, users face challenges in accessing information about service areas and constructing new ad hoc networks without interfering with existing networks, leading to degradation of overall throughput and limited availability of high-speed internet services.

Innovation Solution

A network service information providing system that includes a wireless area information server, which detects and provides information on service areas of narrow-area wireless communications systems, estimates communication service quality, and modifies installation requests to ensure high throughput by adjusting transmission parameters and frequencies, thereby informing users of suitable wireless systems and preventing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If users construct new ad hoc networks in environments where various wireless systems coexist, then local communication services can be provided, but interference with existing networks occurs and overall throughput degrades

Engineering Contradiction:

Improveability to construct new ad hoc networksVSAvoidthroughput of existing wireless systems

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary detection of wireless environment information before allowing ad hoc network construction. The wireless area information server collects data about existing wireless systems and predicts potential interference, preventing harmful constructions before they occur.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system establishes a feedback loop where the wireless area information server continuously monitors the wireless environment, provides information to terminals about suitable frequencies and transmission powers, and updates recommendations based on changing conditions to maintain optimal throughput.

Inventive Principle:

Principle #23Feedback

2Loss of information

If wireless area information server provides comprehensive information about all narrow-area wireless systems, then users can make informed connection decisions, but information management complexity increases

Engineering Contradiction:

Improveavailability of service area informationVSAvoidcomplexity of information management system

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The wireless area information server performs multiple functions: detecting wireless systems, managing information databases, predicting interference, and providing recommendations to terminals. This multi-functionality consolidates complexity into a single centralized system rather than distributing it across multiple components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The wireless area information server acts as an intermediary between terminals and the complex wireless environment. It abstracts the complexity by providing processed, relevant information to terminals without exposing them to the underlying complexity of managing all wireless system data.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Speed

If terminals connect to narrow-area wireless systems for high-speed access, then transmission rate improves, but coverage area is limited compared to wide-area systems

Engineering Contradiction:

Improvetransmission rateVSAvoidservice coverage area

Core Design Contradiction:

SpeedVSArea of stationary object

Solution Approach 1:

The system dynamically recommends wireless systems based on terminal location and movement. As terminals move between areas covered by different narrow-area systems, the server updates recommendations to maintain high-speed connectivity, effectively extending the high-speed service area through dynamic adaptation.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The server provides advance information about available narrow-area wireless systems and their service areas to terminals. This allows terminals to proactively connect to high-speed systems before entering their coverage areas, ensuring continuous high-speed access as they move through different zones.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS7486635B2Network service information providing system and network service information providing apparatus and method and terminal thereof

Publication Date: 2009.02.03 NEC CORP

AI summary

A network service information providing system which allows users to readily know a location and radio transmission parameters for connecting to a narrow-area wireless communications system in a system which contains wide-area wireless communications systems and narrow-area wireless communications systems. The user knows his/her own location through a wide-area wireless communications system and sends the location of a narrow-area wireless communications system which he/she wants to connect to, wireless transmission parameters, and other requirements to a wireless area information server. The wireless area information server possesses wireless transmission parameters of narrow-area wireless communications systems and the locations of base stations which provide narrow-area wireless communications services. Upon receiving the user requirements, the wireless area information server informs the user of the service area of the narrow-area wireless communications system nearest to the user via the wide-area wireless communications system.