Conference Manager for Low Bandwidth Video
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Solution Overview
Problem
Conventional video conferencing systems in low bandwidth networks face issues with packet loss and session termination, which are critical in applications like tele-medicine, where continuous and uninterrupted real-time feeds are essential, especially in rural areas with poor coverage and bandwidth.
Innovation Solution
The Conference Manager (CM) system, comprising a producer unit, consumer unit, and data streaming unit, facilitates bi-directional communication by initiating audio and video capture at the transmitting end, enabling fast block-wise data transfer and using a combination of circuit-switched and packet-switched networks to maintain communication, even in low bandwidth conditions, and employs a media mixing unit for time-alignment and encoding of audio, video, and sensor data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If video conferencing is conducted over low bandwidth networks in rural areas, then coverage and bandwidth are limited, but packet loss and session termination increase
Solution Approach 1:
The patent segments data into different priority levels (critical and non-critical segments) and transmits them through different mechanisms. Critical segments are transmitted as reliable requests with guaranteed delivery, while non-critical segments are transmitted as unreliable requests, thereby reducing overall packet loss and maintaining session continuity in low bandwidth networks.
Solution Approach 2:
The system dynamically changes transmission parameters based on network conditions. It adjusts the reliability level of data segments, modifies transmission protocols (circuit-switched vs packet-switched), and adapts data transfer strategies according to available bandwidth and network stability, thereby improving session reliability in varying network conditions.
2Speed
If data is transmitted in real-time over low bandwidth networks, then bandwidth constraints are present, but latency increases
Solution Approach 1:
The patent divides data into blocks and transmits them in parallel through different network paths (circuit-switched and packet-switched networks). This segmentation allows critical data to use the faster circuit-switched path while non-critical data uses the packet-switched path, reducing overall latency without compromising real-time transmission requirements.
Solution Approach 2:
The system establishes circuit-switched connections in advance for critical data paths before actual data transmission begins. This preliminary setup ensures that when data needs to be transmitted, the fastest path is already prepared, minimizing latency while maintaining real-time transmission capability.
3Reliability
If critical applications like tele-medicine require uninterrupted real-time feeds, then session continuity is essential, but network instability in rural areas causes session termination
Solution Approach 1:
The patent implements redundant transmission paths (both circuit-switched and packet-switched networks) and buffers for critical data segments before transmission begins. This cushioning mechanism ensures that if one path fails or experiences instability, the other path can continue delivering data, preventing session termination in tele-medicine applications.
Solution Approach 2:
The system introduces an intermediary mechanism that manages multiple transmission paths and data segments. This intermediary coordinates between circuit-switched and packet-switched networks, selecting the most reliable path for each data segment and ensuring continuous delivery to the receiving end, thereby protecting against network instability.
4Speed
If fast block-wise data transfer is implemented to reduce latency, then data transfer speed improves, but device complexity increases
Solution Approach 1:
The patent segments data into standardized blocks with defined formats (critical and non-critical segments). This segmentation simplifies the complexity by providing a structured approach to parallel transmission, where each block follows the same format and can be processed independently, reducing the overall system complexity while maintaining fast transfer speeds.
Data Source
AI summary
Video conferencing involves transmission of video as well as audio over a network between people involved in the video conferencing, over a network. Typically, quality of conference sessions are affected by quality of network connection. If the bandwidth of the network is low, that that may cause call quality issues or call drops, which is not desirable especially in certain applications such as a surgery over video conferencing. Disclosed herein is a Conference Manager (CM) that can facilitate video conferencing over a low bandwidth network. The CM uses a producer unit and a consumer unit, for video capture and transmission, and a communication device for audio capture and transmission. The CM captures and combines audio and video data at a receiving end of the communication network. The CM also uses a fast block-wise data transfer mechanism for facilitating communication between the transmitting end and the receiving end.