Multimedia Call Diversion via Network Recording Device
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Solution Overview
Problem
In packet-switching telecommunication networks, multimedia calls are often rejected due to insufficient bandwidth, and existing solutions like voice mail systems require continuous and high-quality bandwidth for message retrieval, limiting their usability.
Innovation Solution
A method that diverts multimedia calls to a recording device within the network when bandwidth is insufficient, allowing messages to be stored and forwarded to a local device using available bandwidth, with options for the called subscriber to decide on accepting the call or diverting it, and resuming services without data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multimedia calls are rejected due to insufficient bandwidth, then service quality is maintained, but call completion rate deteriorates
Solution Approach 1:
The patent extracts the message storage function from the called subscriber's device and places it in the network's recording device. This allows the called subscriber to continue using bandwidth-intensive services without interruption, while incoming calls are diverted to the network recording device. The extraction resolves the contradiction by separating message handling from real-time communication requirements.
Solution Approach 2:
The network recording device acts as an intermediary between calling and called subscribers. When bandwidth is insufficient, calls are diverted to this intermediary service rather than being directly rejected. The intermediary stores messages and enables later retrieval, maintaining service quality while improving call completion rates by providing an alternative communication path.
2Reliability
If voice mail systems require continuous high-quality bandwidth for message retrieval, then message quality is maintained, but bandwidth availability deteriorates
Solution Approach 1:
The patent applies partial action by transmitting only essential message data to the called subscriber's device rather than requiring continuous high-quality bandwidth streams. The network recording device stores complete messages, while the mobile device receives sufficient data for playback, reducing bandwidth requirements while maintaining acceptable message quality.
Solution Approach 2:
The system changes the bandwidth parameter requirements by shifting from continuous high-quality streaming to intermittent lower-quality transmission. Messages are stored in the network with full quality, then transmitted to mobile devices at lower bandwidth rates suitable for asynchronous retrieval, resolving the contradiction between message quality and bandwidth availability.
3Productivity
If multimedia calls are diverted to network recording device, then bandwidth efficiency is improved, but system complexity deteriorates
Solution Approach 1:
The network recording device serves multiple functions: it acts as a voicemail system, a message storage facility, and a call diversion endpoint. By making this single component multi-functional, the patent avoids adding separate complex systems for each function, thereby improving bandwidth efficiency while limiting the increase in overall system complexity.
Data Source
AI summary
The invention relates to a method for storing and passing on multimedia messages for a multimedia call in a packet-switching telecommunication network (TN), with the called subscriber (B subscriber) having network access with a known and predetermined bandwidth to the telecommunication network (TN). In the situation where it is found (1) during the setting up of a multimedia call that the available bandwidth is too narrow (2, 3) because the called subscriber (B subscriber) is currently using a further multimedia service, the multimedia call is diverted (4) to a recording device (ABZ) which is available in the telecommunication network (TN). A calling subscriber (A subscriber) can then leave a multimedia message on the recording device (ABZ), which is then passed (5) to a local recording device (ABL) for the called subscriber (B subscriber) via the network access and using the bandwidth that is still available. The arrival of the new multimedia message is then indicated (6) to the called subscriber (B subscriber) after complete transmission. The method according to the invention results in the subscriber (B subscriber) in a packet-switching telecommunication network (TN) being informed (6) that a multimedia call has arrived, with the recording device (ABZ) that is available in the telecommunication network (TN) advantageously carrying out a form of buffer function. This buffer function makes it possible to use time expansion to make use of the bandwidth that is still available for transmission of the multimedia message (5).