Multimedia Transfer via MSRP Relay Server
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Solution Overview
Problem
Current SIP-based approaches for transferring multimedia files to multiple recipients are inefficient, requiring manual specification of recipients, high bandwidth usage, and significant time delays due to sequential transmission, which limits scalability and is unsuitable for real-time applications.
Innovation Solution
The method involves using Message Sessions Relay Protocol (MSRP) and an application server to facilitate one-to-many multimedia file transfers by obtaining group membership information and sending the file directly to recipients using MSRP or SIP, reducing bandwidth demand on the sender's device and enabling efficient, scalable distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SIP-based sequential transfer is used to send multimedia files to multiple recipients, then the transfer can be accomplished using existing protocols, but the bandwidth requirement becomes quite sizable and time delays become unduly long
Solution Approach 1:
The patent segments the multimedia file transfer into two phases: (1) The sender's device transfers the file once to a group message relay service server, and (2) the server segments and redistributes the file to multiple recipients simultaneously. This segmentation allows the sender's device to offload the bandwidth-intensive distribution task to the server, reducing mobile device bandwidth consumption while maintaining reliable delivery to all recipients.
Solution Approach 2:
The group message relay service server acts as an intermediary between the sender's mobile device and multiple recipients. The server receives the multimedia file from the sender, stores it temporarily, and then distributes it to all group members. This intermediary approach eliminates the need for the sender's device to maintain multiple simultaneous high-bandwidth connections to all recipients, significantly reducing bandwidth requirements while ensuring reliable delivery.
2Reliability
If SIP-based sequential transfer is used to send multimedia files to multiple recipients, then the transfer can be accomplished using existing protocols, but the time delay for recipients at or near the end of the queue would be unduly long
Solution Approach 1:
The group message relay service server performs preliminary actions by pre-loading and storing the multimedia file before distribution begins. Once the file is received from the sender, the server prepares it for simultaneous distribution to all recipients. This preliminary action ensures that when distribution starts, all recipients can begin receiving the file at approximately the same time rather than waiting in a sequential queue, dramatically reducing delivery time delays.
Solution Approach 2:
The server maintains continuous availability of the multimedia file during the distribution process, allowing multiple recipients to simultaneously download and receive the content. This continuous action model replaces the sequential transfer approach where each recipient must wait for the previous one to complete, enabling parallel file delivery that minimizes total delivery time while ensuring all recipients receive the complete file.
3Reliability
If manual specification of each recipient is required for multimedia transfer, then the SIP proxy can send the video clip to recipients, but the ease of operation becomes difficult and the process becomes cumbersome
Solution Approach 1:
The system implements self-service by allowing the sender to specify only the group identifier (e.g., group name or ID) rather than manually entering each recipient's contact information. The group message relay service server automatically retrieves the group membership list and distributes the multimedia file to all members. This self-service approach leverages pre-configured group information to automate the recipient specification process, making operation simple and intuitive while ensuring reliable delivery to all group members.
Data Source
AI summary
A method for transferring a multimedia file from a user's mobile device to user equipment associated with another user is disclosed. The method includes sending an invitation from the user's mobile device to the user equipment to request a transfer of the multimedia file. The method also includes setting up a bearer data channel between the user's mobile device and the equipment to facilitate the transferring of the multimedia file, the transferring is configured to be accomplished using Message Sessions Relay Protocol (MRSP) or Real-Time Transfer Protocol (RTP). The method further includes transferring the multimedia file using the MSRP or RTP and the bearer data channel.