ATSC 3.0 Receiving Apparatus Channel Bonding Control
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Solution Overview
Problem
Conventional technologies for receiving terrestrial digital broadcasting compliant with the ATSC 3.0 standard lack specifications for the receiving side in channel bonding, which is essential for improving frequency band utilization efficiency.
Innovation Solution
A receiving apparatus that selects a bonding source channel, processes frames to identify a bonding destination channel, and bonds packets from both channels, utilizing features like BSID and LLS flags in the frame preamble to switch and combine data streams, while also including a rear stage processing section for generating a channel map from LLS information and Link Mapping Table.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel bonding is implemented to improve frequency band utilization efficiency, then the frequency band utilization efficiency is improved, but the receiving apparatus complexity increases due to the need for multiple receiving circuits and channel switching mechanisms
Solution Approach 1:
The receiving apparatus dynamically switches between bonding source channel and bonding destination channel based on received frames. The control section determines when to switch channels by processing frame information, allowing the system to adaptively bond packets from different channels without requiring permanent dual-channel reception capability, thus reducing overall device complexity while maintaining bonding functionality
Solution Approach 2:
The apparatus performs preliminary channel identification by extracting channel information from received frames before actual bonding occurs. The control section processes frame data to identify bonding destination channels in advance, allowing the receiving section to prepare for channel switching and bonding operations beforehand, which streamlines the bonding process and reduces operational complexity
2Adaptability or versatility
If the receiving apparatus switches between bonding source channel and bonding destination channel, then the channel bonding functionality is achieved, but the reception time increases due to channel switching operations
Solution Approach 1:
The receiving apparatus rapidly switches between channels by utilizing the frame structure that contains necessary bonding information. By processing frames and identifying bonding destination channels quickly, the system minimizes the time spent on channel switching operations, allowing rapid transitions between bonding source and destination channels without significant reception time penalty
Solution Approach 2:
Channel identification and switching decisions are made in advance by processing frame information before actual data bonding is required. The control section determines bonding destination channels from received frames, allowing the receiving section to switch channels proactively rather than reactively, reducing overall reception time by eliminating delays associated with post-detection channel switching
Data Source
AI summary
Channel bonding is realized in a receiving apparatus that receives terrestrial digital broadcasting compliant with an ATSC 3.0 Standard. A receiving section selects any one of a plurality of frequency channels as a bonding source channel and receives a frame from the bonding source channel. A control section performs processing for obtaining one frequency channel in which packets are to be bonded with the bonding source channel among the plurality of frequency channel as a bonding destination channel on the basis of the frame and processing for controlling the receiving section to newly receive a frame from the bonding destination channel. A decoding section decodes the frame and acquires the packets. A bonding section bonds together the packets corresponding to the bonding source channel and the packets corresponding to the bonding destination channel.