Packet Generation Device for MPEG MMT Sequence Detection
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Solution Overview
Problem
In MPEG MMT protocol, when a single component is divided into subsets and transmitted over different networks, the receiver struggles to determine the packet sequence among the subsets and detect missing packets, leading to reliability issues in packet transmission.
Innovation Solution
A generation device that assigns first and second transport sequence information to each packet, allowing the receiver to determine the transport sequence within the component and subset, facilitating easy detection of packet loss and sequence determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single component is divided into multiple subsets and transmitted over different networks, then transmission reliability and network utilization are improved, but the receiver cannot determine packet sequence among subsets and cannot detect missing packets
Solution Approach 1:
The patent divides a single component into multiple subsets (first subset and second subset) and transmits them over different networks. Each subset is assigned its own sequence number starting from 0, enabling independent tracking within each subset while maintaining the ability to detect missing packets through sequence number continuity verification at the receiver
Solution Approach 2:
The patent introduces a new dimension of sequence numbering by assigning sequence numbers independently to each subset rather than using a single continuous sequence across all subsets. This dimensional separation allows the receiver to track packets within each subset independently, resolving the sequence determination problem while maintaining transmission reliability
2Ease of operation
If sequence numbers are assigned within each subset independently, then packet sequence can be determined within subsets, but the receiver cannot determine overall packet sequence across subsets
Solution Approach 1:
The patent segments the sequence numbering system into subset-specific sequences rather than using a single global sequence. Each subset (first subset, second subset) has its own independent sequence numbers, making it easy to determine packet sequence within each subset while the receiver can still identify which subset a packet belongs to, thereby maintaining overall sequence awareness
3Ease of operation
If all transport packets are delivered over a single network, then sequence determination is simple, but transmission reliability and network utilization are limited
Solution Approach 1:
The patent segments the transmission path into multiple networks by dividing components into subsets transmitted over different networks. Each subset maintains simple intra-subset sequence numbering, while the overall system achieves improved reliability through diversified transmission paths, balancing simplicity and reliability
Solution Approach 2:
The patent creates a universal packet structure that can be transmitted over any network with consistent formatting and sequence numbering rules. This multi-functionality allows the same packet format to work across different networks while maintaining sequence determination capability, achieving both simplicity and reliability
Data Source
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AI summary
There is provided a transmitter by which a reception side easily detects packet loss of a transport packet. The transmitter (1) includes a content dividing unit (13) that divides a set composed of a plurality of units into a plurality of subsets, a transport sequence assigning unit (15) that assigns, to the packet, the transport sequence of the unit within a component and the transport sequence of the unit within the subset, and a header generating unit (14) that generates a packet including the transport sequences.