Sidelink Coordination Message Segmentation for Resource Allocation
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Solution Overview
Problem
In wireless communication systems, sidelink communications between user equipment (UEs) face inefficiencies due to the need for UE-specific coordination messages, which consume time and network resources, especially when UEs operate in half-duplex mode and cannot receive information during transmissions.
Innovation Solution
UEs receive coordination messages that include preference status information for communication resources, allowing them to identify resource availability and preference based on intended recipient status, enabling efficient resource selection for sidelink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE-specific coordination messages are used for sidelink resource allocation, then resource allocation accuracy is improved, but message overhead and resource consumption increase
Solution Approach 1:
The coordination message is segmented into a common part (applicable to all UEs in the group) and UE-specific parts (applicable to individual UEs). This segmentation allows the system to maintain resource allocation accuracy for specific UEs while reducing overall message overhead by sharing common information across multiple UEs.
Solution Approach 2:
The coordination message structure is designed to serve multiple functions simultaneously: it provides common resource allocation information for all UEs in the sidelink group while also containing UE-specific coordination information. This multi-functionality reduces the need for separate messages and lowers overall overhead.
2Reliability
If UE-specific coordination messages are transmitted for each UE, then coordination accuracy is improved, but time consumption and resource waste increase
Solution Approach 1:
Multiple coordination messages that would traditionally be sent individually to different UEs are merged into a single coordination message structure. This message contains both common information applicable to all UEs and UE-specific information, allowing simultaneous coordination of multiple UEs and reducing total transmission time.
Solution Approach 2:
The coordination message is prepared in advance to include pre-calculated resource allocation information and coordination data for multiple UEs. This preliminary preparation reduces the time required for message transmission and processing during actual sidelink operations.
3Measurement precision
If detailed coordination information is provided for each resource, then resource selection precision is improved, but message complexity increases
Solution Approach 1:
The coordination information is segmented into structured fields: common resource allocation information, UE-specific resource information, and resource status indicators. This segmentation maintains detailed resource selection precision while organizing the message in a manageable, standardized format that reduces processing complexity.
Solution Approach 2:
The coordination message uses standardized parameter fields and structured data formats to represent resource information. By changing the representation parameters to standardized forms, the message maintains detailed information while reducing structural complexity and improving ease of processing.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from another UE, a coordination message that includes resource information (e.g., a preference status) for communication resources. The UE receiving the coordination message may determine a status of one or more resources based on the resource information, an intended recipient of the coordination message (e.g., based on a destination identifier of the coordination message), or a communication connection associated with the one or more resources. The status may indicate that a respective resource of the one or more resources is available, reserved, preferred, or non-preferred, or some combination thereof. In some examples, the one or more resources may be for a sidelink connection or a unicast connection. The receiving UE may utilize the determined status to select one or more resources for a sidelink transmission.