Secure Conferencing Endpoint Selection via SRTP Source Identifiers
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Solution Overview
Problem
Conventional conferencing methods incur unnecessary costs and complexity by decrypting, dejittering, and processing all data streams, even from non-relevant endpoints, and lack endpoint control over switching between listener and speaker streams.
Innovation Solution
Sending endpoint selection parameters in clear text within SRTP allows selective identification and encryption of relevant endpoints, enabling endpoints to receive only relevant data streams with source identifiers for selective reception and mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all N endpoints are decrypted and processed through dejitter and VAD processing, then complete endpoint monitoring is achieved, but processing overhead and system complexity increase significantly
Solution Approach 1:
The patent extracts only the necessary processing steps (decryption, dejitter, VAD) for relevant endpoints M from the complete set of N endpoints. By identifying and processing only the subset of relevant endpoints based on predefined parameters, the system achieves complete monitoring of actual speakers while avoiding unnecessary processing of inactive endpoints, thus reducing processing overhead and system complexity.
Solution Approach 2:
The patent segments the endpoint processing into two distinct groups: relevant endpoints M that require full processing (decryption, dejitter, VAD), and non-relevant endpoints N-M that are excluded from processing. This segmentation is based on predefined parameters such as voice activity detection and noise thresholds, allowing the system to focus computational resources only where needed while maintaining monitoring reliability.
2Reliability
If conventional secure conferencing processes all N endpoints through decryption and VAD, then all endpoints are monitored, but cost and processing time increase unnecessarily
Solution Approach 1:
The patent applies partial action by processing only the necessary subset of M relevant endpoints out of N total endpoints. Instead of performing complete processing on all endpoints, the system selectively applies decryption, dejitter, and VAD processing only to endpoints that meet predefined relevance criteria, thereby maintaining security monitoring reliability while significantly improving processing efficiency and reducing unnecessary computational costs.
3Ease of operation
If endpoint selection parameters are sent in clear text within SRTP, then selective identification of relevant endpoints is enabled, but security requirements may be compromised
Solution Approach 1:
The patent uses source identifiers as intermediary elements that are inserted into encrypted data streams. These identifiers act as mediators that enable endpoints to selectively identify and process relevant data streams without requiring the transmission of selection parameters in clear text. The source identifiers facilitate endpoint selection capability while maintaining data security by operating within the encrypted SRTP framework.
Data Source
AI summary
Methods and systems for secure conferencing in a network have been provided. Relevant endpoints from the provided endpoints are selected on the basis of the endpoint selection parameters received in an SRTP extension. Data streams generated from the selected endpoints are decrypted and mixed, to obtain all the possible data stream mixes. A source identifier is inserted in all the possible data stream mixes. On the basis of source identifiers, endpoints can selectively receive any of the generated data streams.