Joint Sidelink Relay DCI Scheduling for Wireless Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scheduling and managing sidelink relay communications, particularly in scenarios involving full-duplex transmissions and relay nodes, which can lead to increased overhead and reduced throughput.
Innovation Solution
The proposed solution involves a method where a base station transmits a single Downlink Control Information (DCI) message to schedule both a first transmission between a source node and a relay user equipment (UE) and a second transmission between the relay UE and a destination node, thereby reducing overhead and enhancing throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate DCI messages are used for each transmission in sidelink relay communications, then each transmission can be individually scheduled and controlled, but the overhead increases and throughput decreases
Solution Approach 1:
The patent combines multiple separate DCI messages into a single joint DCI message that schedules both the first transmission (source node to relay UE) and the second transmission (relay UE to destination node). This merging reduces control overhead and improves throughput while maintaining individual transmission control through separate resource allocation fields within the joint DCI message.
2Measurement precision
If separate DCI messages are used for each transmission, then transmission control is precise, but the overhead increases
Solution Approach 1:
The patent merges multiple DCI messages into a single joint DCI message containing multiple resource allocation fields. Each field provides precise control for its corresponding transmission, while the overall message count is reduced, thereby decreasing overhead while preserving control precision.
Solution Approach 2:
The joint DCI message serves multiple functions simultaneously: it schedules both the first and second transmissions, provides resource allocation for each transmission, and enables individual feedback mechanisms. This multi-functionality reduces the need for separate control messages while maintaining precise transmission control.
3Productivity
If joint DCI messaging is implemented for sidelink relay scheduling, then overhead is reduced and throughput is improved, but the complexity of scheduling increases
Solution Approach 1:
The joint DCI message is segmented into distinct resource allocation fields, each dedicated to a specific transmission. This segmentation allows the base station to independently control and schedule each transmission while using a single unified message structure, thereby managing complexity through organized modularity.
Solution Approach 2:
The joint DCI message acts as an intermediary structure that coordinates both transmissions. It contains multiple resource allocation fields that serve as intermediaries between the base station's scheduling decisions and the actual transmissions, simplifying the coordination complexity by providing a structured intermediate representation.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a relay user equipment (UE) may receive, from a base station, a downlink control information (DCI) message scheduling a first transmission between a source node and the relay UE and a second transmission between the relay UE and a destination node. The UE may transmit, to the base station, at least one of: feedback regarding at least one of the first transmission or the second transmission, or the second transmission. Numerous other aspects are described.