Control Signaling Field Reuse for Resource Efficiency
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Solution Overview
Problem
In radio communication systems, the transmission of control signaling often results in waste of physical resources due to the need to indicate both Redundancy Version (RV) and payload size in both initial and retransmitted packets, even if the payload size is already successfully received, leading to inefficient use of resources.
Innovation Solution
Different states of one field in the control signaling are used to indicate either the payload size or RV, allowing only the necessary information to be sent, thereby vacating the field and saving physical resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both RV and payload size are indicated in control signaling for every transmission (initial and retransmission), then the receiver can correctly decode all packets, but physical resources are wasted by transmitting redundant information
Solution Approach 1:
The patent extracts and removes redundant information from the control signaling. Specifically, it eliminates the payload size indication from retransmission packets (since the receiver already knows it from the initial transmission) and removes the RV indication from initial transmissions (since a default value is used). This extraction of unnecessary information directly reduces physical resource consumption while maintaining decoding accuracy.
Solution Approach 2:
The patent implements dynamic control signaling where the content of the signaling changes based on the transmission type. For initial transmissions, only RV is indicated (with payload size omitted); for retransmissions, only payload size is indicated (with RV omitted). This dynamic adaptation of signaling content to the specific transmission context optimizes resource usage while ensuring the receiver always has the necessary information.
2Loss of information
If control signaling includes all necessary fields (physical resource indication, NDI, payload size, RV) for every packet transmission, then complete information is provided to the terminal, but the signaling overhead increases
Solution Approach 1:
The patent extracts and removes redundant information fields from the control signaling based on transmission type. For initial transmissions, the payload size field is removed (using a default value instead). For retransmissions, the RV field is removed (using a default value instead). This extraction reduces signaling overhead while maintaining information completeness through the use of contextual defaults.
Solution Approach 2:
The patent makes the control signaling field multi-functional by allowing it to indicate different parameters at different times. The same field location in the control signaling can indicate RV during initial transmissions, indicate payload size during retransmissions, or be omitted entirely when a default value applies. This multi-functionality reduces overall signaling overhead while maintaining information completeness.
Data Source
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AI summary
A method for sending control signaling, including: the transmitter uses different states of one field in the control signaling to indicate the payload size or RV; and sends the control signaling indicative of the payload size or RV on the field. It is appropriate that some states of one field indicate different payload sizes, and the remaining states of the field indicate different RVs. An apparatus for sending control signaling is disclosed. The apparatus is integrated in a base station, and includes a control signaling generating unit and a control signaling sending unit.