PUCCH Short Data Field for Uplink Acknowledgment Transmission
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Solution Overview
Problem
Time Division Duplex (TDD) cellular communication systems face inefficiencies due to the requirement for frequent uplink data slot allocations for services like TCP connections, which reduce available bandwidth and increase feedback latency, affecting data throughput.
Innovation Solution
Configuring a physical uplink control channel (PUCCH) message with a short data field to include uplink data messages or acknowledgments, allowing these to be transmitted without consuming uplink data bandwidth, thereby reducing the need for frequent slot allocations and minimizing feedback latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If frequent uplink data slot allocations are used to transmit TCP acknowledgments, then feedback latency is reduced, but available bandwidth for data transmission is reduced
Solution Approach 1:
The patent combines TCP acknowledgment transmission with uplink control channel messages by appending a short data field to the PUCCH message structure. This merging allows acknowledgments to be transmitted alongside control information without requiring separate uplink data slot allocations, thereby reducing feedback latency while preserving data transmission bandwidth.
Solution Approach 2:
The uplink control channel message is enhanced to serve multiple functions: it carries traditional control information (such as channel state feedback and scheduling requests) and simultaneously transports TCP acknowledgments through the appended short data field. This multi-functionality eliminates the need for dedicated data slots for acknowledgment transmission.
2Productivity
If frequent uplink data slot allocations are used to transmit periodic reports and feedback, then feedback frequency is increased, but data throughput is reduced
Solution Approach 1:
The patent merges periodic feedback transmission with acknowledgment messages by incorporating both into the uplink control channel message structure. This allows the system to maintain high feedback frequency for services requiring frequent reports while avoiding the bandwidth consumption that would result from separate data slot allocations.
3Adaptability or versatility
If uplink control channel messages are extended to include data fields, then acknowledgment transmission capability is improved, but message complexity is increased
Solution Approach 1:
The patent segments the uplink message structure by appending a distinct short data field to the existing PUCCH message format. This segmentation allows the control channel to carry both traditional control information and TCP acknowledgments in separate, clearly defined sections, improving adaptability while managing complexity through structured organization.
Solution Approach 2:
The patent implements a partial extension of the control channel message by adding only a short data field specifically for acknowledgment transmission, rather than completely redesigning the message structure. This partial action provides the necessary acknowledgment capability while minimizing the increase in overall message complexity.
Data Source
AI summary
Embodiments include systems and methods for communicating information in a physical uplink control channel (PUCCH) message. A processor of a wireless device may configure a PUCCH message to include an uplink message in a short data field. The processor may send the PUCCH message including the short data field to convey the uplink message to a communication network. In some embodiments, the processor may receive data from a second wireless device in a downlink channel, and may generate an acknowledgement message responsive to the received data. The processor may configure the short data field to include the acknowledgement message, and may send the PUCCH message including the short data field that includes the acknowledgement message to acknowledge the received data.