Communication Device Coordination for Uplink OFDMA Acknowledgements
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Solution Overview
Problem
In communication systems where data is simultaneously transmitted from multiple originator communication devices to a single receiver communication device, there is a lack of an effective method for the receiver to return acknowledgement signals to each of the originator devices, leading to inefficiencies and potential miscommunication.
Innovation Solution
A communication method and device that enable coordinated transmission of data from multiple transmission-side communication devices to a reception-side device, where the receiver generates and returns acknowledgement signals using uplink OFDMA multiplex communication, ensuring simultaneous and reliable acknowledgment to all transmission-side devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is simultaneously transmitted from multiple originator communication devices to one receiver communication device, then communication reliability is improved, but the receiver cannot efficiently return acknowledgement signals to each originator device
Solution Approach 1:
The patent merges multiple individual acknowledgement signal transmission operations into a single coordinated transmission operation. The receiver communication device transmits acknowledgement signals to multiple originator devices simultaneously through coordinated transmission, combining what would otherwise be multiple separate acknowledgement exchanges into one efficient operation that maintains reliability while reducing complexity.
2Reliability
If acknowledgement signals are returned to each originator communication device individually, then acknowledgment reliability is improved, but transmission time increases
Solution Approach 1:
The patent combines multiple individual acknowledgement transmissions into a single coordinated transmission event. By merging the acknowledgement signal transmissions for multiple originator devices into one simultaneous operation, the system maintains reliable acknowledgement delivery to each device while significantly reducing the total time required compared to sequential individual transmissions.
Solution Approach 2:
The system employs periodic coordinated transmission opportunities where acknowledgement signals are transmitted simultaneously to multiple originator devices at scheduled intervals. This periodic coordinated transmission approach ensures reliable acknowledgement delivery while optimizing transmission time by utilizing regular transmission windows rather than continuous sequential transmissions.
Data Source
AI summary
A communication device includes a control unit that performs control to transmit data to a reception-side communication device when coordinated transmission is performed to transmit the data simultaneously from a plurality of transmission-side communication devices to the reception-side communication device, generate a request signal including coordinated transmission information regarding the coordinated transmission and acknowledgement return information for returning an acknowledgement of the coordinately transmitted data simultaneously to the plurality of transmission-side communication devices, transmit the generated request signal to the reception-side communication device, and receive an acknowledgement signal including the acknowledgement, where the acknowledgement signal is transmitted from the reception-side communication device that has received the request signal.