Proximity Enforcement in Heterogeneous Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing content protection mechanisms, such as TTL and round trip time limits, are ineffective in enforcing proximity restrictions in heterogeneous networks due to varying inherent delays across different network configurations, leading to potential unauthorized content transfers.
Innovation Solution
A method and system that combines multiple mechanisms to evaluate transmission distance, using explicit distance calculations for wireless segments and round trip time analysis for wired segments, to determine if the proximity requirements are met, allowing for differentiated treatment of trusted and untrusted network portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single uniform round trip time limit is used for proximity restriction, then the implementation is simple, but it cannot anticipate and factor in the inherent delays associated with various network protocols, leading to inaccurate proximity enforcement
Solution Approach 1:
The network path is segmented into multiple portions (wireless portion and wired portion), and the round trip time is divided and allocated to each segment. This allows for protocol-specific delay considerations in each segment while maintaining overall proximity enforcement accuracy.
Solution Approach 2:
Different quality parameters (round trip time budgets) are assigned to different network portions based on their specific characteristics. The wireless portion receives a wireless round trip time budget and the wired portion receives a wired round trip time budget, accounting for protocol-specific delays in each local segment.
2Measurement precision
If multiple mechanisms are combined to evaluate transmission distance, then proximity enforcement accuracy is improved, but the system complexity increases
Solution Approach 1:
The evaluation mechanism is segmented into protocol-specific components where each network portion is evaluated using its appropriate protocol considerations. This modular approach improves accuracy while managing complexity through structured division.
Solution Approach 2:
The system changes parameters (round trip time budgets) based on the specific network protocol and portion being evaluated. By adjusting the time budget parameters to match protocol characteristics, the system achieves accurate proximity enforcement without requiring a completely complex new evaluation framework.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively enforces proximity limits by accurately determining transmission distances and round trip times across heterogeneous networks, preventing unauthorized content transfers and ensuring compliance with predefined proximity requirements.
Implementation Method 1
Using an inherent relationship between the strength of a received power and the square of the transmission distance, the distance of a segment of the wireless portion of the network may be explicitly calculated.
Data Source
AI summary
The invention provides an enforcement mechanism for limiting the propagation of content to a predefined proximity in a heterogeneous network. The protection mechanism determines the distance associated with wireless links of the heterogeneous networks and verifies that the distance is within the predefined proximity limits. The distance may be measured by evaluating the signal strength of received signals. The protection mechanism further uses round trip time determinations to enforce the proximity limits on wired or unknown segments of the heterogeneous network. Specifically, the round trip time associated with a wired or unknown segment may be determined using the round trip time associated with the wireless segments and the total round trip time of the network as a whole. The round trip time of the wired or unknown segment is then compared to a round trip time limit associated with the proximity requirement for distributing content.