Scheduling Offset for Integrated Access Backhaul Time Resources
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Solution Overview
Problem
Current wireless communication systems, particularly in New Radio (NR) and LTE networks, face challenges in efficiently managing time-domain resource scheduling, leading to conflicts between access and backhaul links, which can result in interference and reduced network performance.
Innovation Solution
The proposed solution involves determining a scheduling offset for wireless resources within available time-domain resources not designated for child nodes or other communications, allowing relay nodes to communicate with donor base stations without conflicting with scheduled access communications, by receiving downlink control signaling and transmitting at a specific offset to avoid overlapping resource allocations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time-domain resources are allocated for access links, then access communication performance is improved, but backhaul link resources become insufficient causing scheduling conflicts
Solution Approach 1:
The time-domain resources are segmented into distinct access link resources and backhaul link resources. The method divides the available time slots into separate sets: one set for access communications between relay nodes and child nodes, and another set for backhaul communications between relay nodes and donor base stations. This segmentation prevents resource conflicts by ensuring that access and backhaul transmissions occur in different time domains.
2Productivity
If scheduling offset is reduced to improve resource utilization, then resource efficiency is improved, but interference between access and backhaul links increases
Solution Approach 1:
The method implements periodic time-domain resource allocation patterns where access and backhaul links are assigned alternating time slots. By establishing a periodic scheduling structure with defined offset relationships, the system ensures that when one link type is active, the other is inactive, thereby eliminating interference while maintaining high resource utilization through systematic time-division multiplexing.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for scheduling and time-domain configuration in an integrated access and backhaul network. Certain aspects provide a method for wireless communication. The method generally includes receiving downlink control signaling indicating a time domain resource allocation for a wireless resource to communicate with a donor base station, determining a scheduling offset to use for the wireless resource within a set of available time domain resources not designated for communicating with one or more child nodes and not designated to a communication of one or more other nodes based on the indicated time domain resource allocation, and communicating with the donor base station using the wireless resource at the determined scheduling offset.