Relay Sidelink Resource Scheduling Using Queue-Aware Allocation
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G NR, lack efficient methods for resource allocation and configuration in relay-based sidelink networks, which can impact network throughput and coverage.
Innovation Solution
A method and apparatus for a relay node to receive configuration information from a donor network node, transmit queue reports, and allocate resources based on channel characteristics and queue information to enhance sidelink communications, along with a donor network node allocating resources to relay nodes for efficient sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay nodes operate in conventional relay networks without centralized resource allocation, then device complexity is reduced, but network throughput and resource utilization efficiency deteriorate
Solution Approach 1:
The donor network node acts as an intermediary that centralizes resource allocation decisions. It receives queue status reports from relay nodes, processes this information, and allocates resources accordingly. This mediator approach allows relay nodes to maintain simplicity while achieving efficient network-wide resource utilization through centralized coordination.
Solution Approach 2:
The system implements a feedback mechanism where relay nodes periodically transmit queue status reports to the donor network node. The donor node uses this feedback information to dynamically allocate resources based on actual network conditions, enabling adaptive resource management that improves throughput without requiring complex local decisions at relay nodes.
2Productivity
If relay nodes transmit frequent queue status reports to enable dynamic resource allocation, then resource allocation efficiency is improved, but network overhead and transmission time increase
Solution Approach 1:
Instead of continuous reporting, the system uses periodic queue status reports transmitted at configured intervals. This periodic action maintains sufficient information flow for effective resource allocation while minimizing unnecessary transmissions, thereby reducing time loss and network overhead compared to continuous reporting mechanisms.
3Productivity
If the donor network node allocates resources based on queue status reports from multiple relay nodes, then spectral efficiency is improved, but the complexity of coordinating multiple relay nodes increases
Solution Approach 1:
The system segments the resource allocation process by having each relay node independently manage its own queue status reporting, while the donor network node handles the centralized allocation decisions. This segmentation allows complex coordination to be distributed, reducing the burden on individual relay nodes while maintaining system-wide spectral efficiency through coordinated resource allocation.
Data Source
AI summary
A method for wireless communication performed by a first relay node, includes receiving, from a donor network node, a relay network message indicating configuration information associated with a sidelink relay network. The method also includes transmitting, to one or both of the donor network node or one or more other relay nodes in the set of relay nodes, a queue report message indicating one or more channel characteristics and queue information. The method further includes receiving, from the donor network node, a resource allocation message indicating a group of resources, based at least in part on the queue report message, for communicating with the set of destination nodes. The method still further includes transmitting, to one or more destination nodes in the set of destination nodes via one or more respective sidelink channels, data via one or more resources of the group of resources.