Sidelink Control Signaling Interpretation for Flexible Subframe Scheduling
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Solution Overview
Problem
Current SCI/DCI designs only support same subframe scheduling for V2V communication, making it unclear how to design DCI to support different subframe scheduling without increasing complexity or size, especially for eNB-based transmission modes.
Innovation Solution
The solution involves a controller that interprets time and frequency position indications in control signaling for sidelink channels according to a subframe scheduling mode, allowing the reuse of these indications for both control and user shared channels, optimizing signaling size and maintaining a common DCI/SCI format for both same and different subframe scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the DCI/SCI format is designed to support different subframe scheduling, then the scheduling flexibility is improved, but the signaling size and complexity increase
Solution Approach 1:
The patent applies dynamics by making the interpretation of time/frequency position indications configurable based on subframe scheduling mode. The system dynamically adapts the meaning of control signaling parameters according to whether same-subframe or different-subframe scheduling is being used, allowing a single DCI/SCI format to serve multiple scheduling scenarios without increasing complexity
Solution Approach 2:
The patent changes the interpretation parameters of existing time and frequency position indications based on the subframe scheduling mode. By reinterpreting the same parameters differently according to the scheduling configuration, the system supports both same-subframe and different-subframe scheduling without adding new parameters or increasing signaling overhead
2Adaptability or versatility
If separate DCI/SCI formats are designed for same and different subframe scheduling, then the scheduling functionality is improved, but the signaling overhead increases
Solution Approach 1:
The patent implements universality by designing a single common DCI/SCI format that can function for both same-subframe and different-subframe scheduling. The control signaling is universally applicable across different scheduling modes, eliminating the need for separate formats and reducing signaling overhead while maintaining full scheduling functionality
Solution Approach 2:
The system dynamically switches the interpretation mode of the control signaling parameters based on the configured subframe scheduling type. This dynamic adaptation allows one format to serve multiple purposes without requiring duplicate formats for different scheduling scenarios
Data Source
AI summary
There are provided an apparatus, a method and a system. The apparatus, at a first node, comprises: a transmitter, operative to transmit control channels and/or user shared channels to a second node; and a controller, operative to make different interpretations on time and/or frequency position indications in a control signaling for transmission of the user shared channels according to a subframe scheduling mode.