Telematics Data Transfer via Session Signaling
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Solution Overview
Problem
Existing methods for transmitting telematics data and metadata over wireless communication systems, particularly in emergency situations, face challenges such as interference, limited data throughput, and unreliability due to voice processing functions in networks, especially in packet-based systems like LTE and HSPA.
Innovation Solution
Modifying signaling messages within a communication session signaling protocol to include telematics data and metadata, allowing for separate and efficient transmission of telematics information, including acknowledgments, retransmission requests, and action instructions, using protocols like SIP, XMPP, or Skype, to ensure reliable data exchange between terminals and central services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If telematics data is transmitted over the voice channel using in-band signaling or modem techniques, then the data can be communicated from terminal to central service, but voice communication may be blocked or experience interference during transmission
Solution Approach 1:
The patent separates telematics data transmission from the voice channel by using dedicated data bearers in packet-switched networks. This segmentation allows voice and data to travel through separate channels, eliminating mutual interference while maintaining reliable data transmission for emergency telematics information.
Solution Approach 2:
The patent introduces packet-switched data bearers as an intermediary mechanism to carry telematics data. Instead of modulating the voice channel, the system uses dedicated data transmission paths with appropriate quality of service parameters, acting as a mediator that prevents data transmission from interfering with voice communication.
2Reliability
If telematics data is transmitted through voice channels using modulation techniques, then data can be communicated bidirectionally, but the data throughput is limited and transmission may be unreliable due to voice processing functions
Solution Approach 1:
The patent replaces the mechanical/acoustic modulation system with an electronic packet-based data transmission system. Instead of modulating voice frequencies to carry data, the system uses digital packet switching with dedicated bearers, eliminating the limitations of voice channel bandwidth and processing functions while enabling high-speed reliable data transmission.
Solution Approach 2:
The patent changes the transmission parameters from voice channel characteristics (narrow bandwidth, modulation constraints, compression) to data bearer characteristics (wider bandwidth, packet-based transmission, QoS parameters). This parameter change enables higher data throughput and improved reliability by operating in the optimized data transmission domain rather than the voice domain.
3Adaptability or versatility
If packet-based voice channels are used in LTE and HSPA systems, then modern communication capabilities are enabled, but telematics data transmission becomes even more unreliable due to packet handling
Solution Approach 1:
The patent creates a universal data bearer mechanism that works across multiple packet-switched network technologies (LTE, HSPA, and future networks). By defining standardized QoS parameters and bearer characteristics that are applicable across different network generations, the system achieves both modern network compatibility and reliable telematics data transmission through consistent packet handling rules.
Data Source
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AI summary
Methods, systems, and devices are described for communicating telematics data and metadata. A first device transmits a first signaling message to a second device over a communication session signaling protocol. The first signaling message includes at least a first set of session information related to a communication session between the first device and the second device and a first set of telematics data for the first device. The first device receives a second signaling message from the second device over the communication session signaling protocol. The second signaling message includes metadata based on a content of the first set of telematics data transmitted in the first signaling message.