ACK/NACK Sorting for Mixed Conventional Unconventional Wireless Feedback
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Solution Overview
Problem
Current wireless communication systems lack a feedback mechanism for user equipment to transmit acknowledgement information (ACK/NACK) in scenarios combining conventional and unconventional communication manners, such as Frequency Division Duplex (FDD), Dynamic Spectrum Sharing (DSS), and Device-to-Device (D2D) communication, leading to inconsistent understanding and inefficient data transmission.
Innovation Solution
The user equipment sorts and sends acknowledgement information in a specific sequence across multiple frequency bands, allowing the network device to distinguish between conventional and unconventional communication signals, and performs bundling of ACK/NACK bits based on carrier sequence numbers to manage bit quantity within preset thresholds, optimizing transmission efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If user equipment transmits ACK/NACK information for both conventional and unconventional communication manners separately, then the feedback mechanism covers all communication scenarios, but the number of bits required for transmission increases
Solution Approach 1:
The patent combines ACK/NACK information from both conventional and unconventional communication manners into a single transmission. The user equipment sorts and multiplexes these acknowledgements, allowing multiple feedback bits to be transmitted together rather than separately, thereby reducing the total number of transmissions while maintaining comprehensive feedback coverage across different communication scenarios.
2Productivity
If user equipment sorts and bundles ACK/NACK bits based on carrier sequence numbers, then transmission efficiency is optimized, but the complexity of the feedback mechanism increases
Solution Approach 1:
The patent applies parameter changes by sorting and bundling ACK/NACK bits according to carrier sequence numbers. This systematic reorganization of feedback bits based on a specific parameter (carrier sequence number) optimizes transmission efficiency by grouping related acknowledgements together, while the rule-based approach keeps the increased complexity manageable through standardized procedures.
3Reliability
If the system prioritizes ACKs for better-quality carriers and NACKs for poorer-quality carriers, then transmission reliability is improved, but the difficulty of managing and sorting feedback information increases
Solution Approach 1:
The patent applies local quality by differentiating the treatment of ACK/NACK bits based on carrier quality. Better-quality carriers receive prioritized ACK handling while poorer-quality carriers receive NACK handling, allowing the system to adapt feedback management to local conditions of each carrier. This quality-based differentiation improves overall transmission reliability while the systematic sorting mechanism manages the complexity of handling different feedback types.
Data Source
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AI summary
The present invention relates to the field of wireless communications technologies, and in particular, to user equipment, a network device, and an acknowledgement information transmission method. The user equipment sends at least one first ACK/NACK and at least one second ACK/NACK of at least two acknowledgement information ACKs/NACKs to be sent in one uplink subframe, according to a sequence of the first ACK/NACK being first, and the second ACK/NACK being second, or the second ACK/NACK being first, and the first ACK/NACK being second. The network device may determine, according to a same sorting sequence used by the user equipment for sending, that in the received at least two ACKs/NACKs, which is used to feed back a signal transmitted in an unconventional communication manner, and which is used to feed back a signal transmitted in a conventional communication manner. Therefore, a feedback mechanism of acknowledgement information if user equipment performs communication by using both a conventional communication manner and an unconventional communication manner is provided.