Reception Device Channel Bonding Error Minimization
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Solution Overview
Problem
In digital broadcasting, channel bonding using PLP bundling faces challenges in accurately rearranging BB frames due to errors during transmission, as the input stream time reference (ISCR) is the sole order information, and its loss disrupts the reconstruction of original streams.
Innovation Solution
A reception apparatus and method that processes multiple divided streams by selecting BB frames based on packet start positions within an influence period to minimize errors, using SYNCD, rule-based selection, or predictive ISCR results to ensure correct rearrangement of BB frames even when ISCR is unavailable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If ISCR is used as the only order information to specify BB frame sequence, then the system complexity is reduced, but the reliability of BB frame rearrangement deteriorates when transmission errors occur
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing packet start position information for BB frames before transmission. When ISCR is lost due to transmission errors, the reception device can use these pre-stored packet start positions to correctly identify and rearrange BB frames without needing the original ISCR values, thus maintaining reliability while keeping the system relatively simple
Solution Approach 2:
The patent introduces packet start position information as an intermediary element between the transmitted data and the rearrangement process. This intermediary provides alternative ordering information that can be used when the primary ISCR mechanism fails, resolving the contradiction by adding a mediation layer rather than completely overhauling the system
2Measurement precision
If packet start position information is used for BB frame identification, then the accuracy of BB frame rearrangement is improved, but the loss of information increases due to additional data requirements
Solution Approach 1:
The patent extracts packet start position information from the transmitted data stream and uses it specifically for BB frame identification and rearrangement. By taking out this specific piece of information and using it as a dedicated marker, the system achieves high rearrangement accuracy without needing to transmit redundant entire frame copies, thus minimizing information loss
Solution Approach 2:
The patent creates a copy of the packet start position information and uses it as a reference for rearrangement. This copying approach allows the system to have accurate rearrangement data without losing the original transmitted information, as the copy serves only as an organizational reference
Data Source
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AI summary
The present technology relates to a reception apparatus for enabling the influence of an error during transmission to be minimized in channel bonding, and a reception method. The reception apparatus receives a plurality of divided streams acquired by distributing BB frames of a BB stream which is a stream of BB frames to a plurality of data slices, processes the BB frames in a selection order and constructs packets thereby to reconstruct the original BB stream from the plurality of the divided streams, and when an error occurs during transmission and the BB frame to be selected is estimated, specifies positions of the packets on the basis of information on a packet start position of a BB frame immediately before an influence period for BB frames in the influence period in which an order of rearrangement of the BB frame to be selected can be wrong. The present technology is applicable to channel bonding such as PLP bundling.