Electronic Device Multi-Link Reception for Error-Block Retransmission
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Solution Overview
Problem
Existing wireless communication systems experience delays due to the inability of reception devices to promptly transfer data reception failures to transmission devices, leading to inefficiencies in real-time data transfer.
Innovation Solution
Implementing a communication module and processor configuration that allows for the exchange of data via multiple wireless communication links, enabling the transmission of data block failures and retransmissions through secondary links, with the processor controlling the device to manage data block reception and retransmission based on timer settings and session durations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data transmission is performed through a single primary link, then device complexity is reduced, but data transfer delay increases when errors occur
Solution Approach 1:
The communication system is segmented into multiple independent links (primary link and secondary link), allowing data blocks to be transmitted through different paths. When an error occurs on the primary link, the system can segment the retransmission process and use the secondary link specifically for error block retransmission, thereby reducing overall delay without requiring complete system redundancy.
Solution Approach 2:
The secondary link acts as an intermediary channel for error recovery. Instead of using the primary link for both initial transmission and retransmission, the secondary link serves as a dedicated intermediary path for retransmitting erroneous data blocks, enabling parallel error recovery operations that reduce waiting time.
2Reliability
If multiple wireless communication links are established, then data transfer reliability is improved, but device complexity increases
Solution Approach 1:
The multiple links are segmented into specific functional roles: primary link for initial data transmission and secondary link for error block retransmission. This functional segmentation allows the system to manage multiple links with clear division of labor, reducing the complexity of link management while maintaining reliability benefits.
Solution Approach 2:
The system establishes multiple links but only activates the secondary link when errors occur during data transmission. This partial action approach means the full complexity of managing multiple simultaneous active links is avoided, while still gaining the reliability advantage of having backup paths available when needed.
3Device complexity
If error information is transmitted only after data transmission is terminated, then link management is simplified, but retransmission delay increases
Solution Approach 1:
The system performs preliminary actions by transmitting error information (NACK signals) during the data transmission process rather than waiting for termination. This allows the transmission device to prepare for retransmission in advance, initiating the retransmission process before the original transmission cycle fully completes, thereby reducing overall delay.
Solution Approach 2:
A feedback mechanism is implemented where the receiving device continuously monitors data block reception status and provides real-time feedback (ACK for successful reception, NACK for errors) to the transmission device. This feedback loop enables dynamic adjustment of the transmission process and initiates retransmission operations earlier, reducing the delay caused by error recovery.
Data Source
AI summary
An electronic device may receive aggregated data including a plurality of data blocks via a first link among a plurality of wireless communication links from a second electronic device connected to the electronic device via the plurality of wireless communication links, may transmit information indicating a failure to receive a target block among the plurality of data blocks to the second electronic device via a second link among the plurality of wireless communication links based on reception of the target block failing, and may receive the target block from the second electronic device via the second link.