SDP Content Attributes for Multi-Source 360 Video
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Solution Overview
Problem
Current 5G communication systems lack support for multiple 360-degree videos in conversational services, as Session Description Protocol (SDP) fields and attributes do not enable the expression and selection of multiple 360-degree videos from a single or multiple entities, limiting remote terminals' ability to receive either 360-degree or 2D videos based on their preferences.
Innovation Solution
Implementing a method where a media resource function (MRF) entity transmits and receives SDP offer and answer messages to negotiate the provision of multiple 360-degree videos, including content attributes to identify video sources, allowing remote terminals to select and receive appropriate video formats, such as 360-degree or 2D videos, during an immersive teleconferencing and telepresence session.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If SDP fields and attributes are used for video negotiation, then video communication is enabled, but multiple 360-degree videos from single or multiple entities cannot be expressed and selected
Solution Approach 1:
The patent segments the video information by introducing separate SDP fields (a=content and a=content-type) to identify different video sources and their types. This segmentation allows the system to handle multiple 360-degree videos from different entities by clearly distinguishing each video's origin and format in the SDP negotiation process.
Solution Approach 2:
The patent adds new dimensions to the existing SDP structure by introducing content and content-type attributes. These new dimensions enable the system to express multiple 360-degree videos by categorizing them according to their source and type, transforming the flat SDP structure into a multi-dimensional framework that can accommodate complex video scenarios.
2Ease of operation
If remote terminals receive multiple video formats, then user preference selection is enabled, but protocol complexity increases
Solution Approach 1:
The patent introduces the a=content and a=content-type attributes as intermediaries between the video sources and the remote terminal. These attributes act as mediators that carry essential information about video origin and format through the SDP negotiation process, enabling remote terminals to make informed selection decisions without requiring complex custom protocols.
Solution Approach 2:
The patent enhances the universality of the SDP protocol by adding attributes that serve multiple functions: identifying video source, indicating video type, and enabling format selection. This multi-functional approach allows the existing SDP framework to handle complex multiple 360-degree video scenarios without requiring a completely new protocol design.
Data Source
AI summary
The disclosure relates to a 5th Generation (5G) or 6th Generation (6G) communication system for supporting a higher data transmission rate. The method of a first entity performing a media resource function (MRF) includes transmitting, to a second entity, a session description protocol (SDP) offer message for an SDP negotiation associated with a conference providing a plurality of 360-degree videos, and receiving, from the second entity, an SDP answer message. Wherein the SDP offer message includes a plurality of media descriptions for the plurality of 360-degree videos, and wherein, in case that a first 360-degree video of the plurality of 360-degree videos is originated from one of a plurality of sources at a conference location of the conference, a first media description for the first 360-degree video includes a content attribute for identifying a source from which the first 360-degree video is originated.