Single-Grant Multiple-Transmission Scheduling Across Full-Duplex Subbands
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Solution Overview
Problem
Conventional wireless networks lack a mechanism for a single downlink control information (DCI) grant to schedule multiple physical uplink or downlink shared channel (PxSCH) communications during full-duplex (FD) slots, such as subband full-duplex (SBFD) or intra-band full-duplex (IBFD) slots, where frequency resources are divided into distinct subbands or overlapping frequencies.
Innovation Solution
A single grant is used to schedule multiple wireless communications during a FD slot, with a downlink control information (DCI) grant indicating time domain resource allocation (TDRA) fields to identify separate frequency resources for different communications, allowing simultaneous uplink and downlink transmissions or other combinations during the FD slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single DCI grant is used to schedule multiple PxSCH communications during FD slots, then resource allocation efficiency is improved, but the complexity of the scheduling mechanism increases
Solution Approach 1:
The patent segments the frequency resources into distinct subbands within the FD slot, allowing the single DCI grant to schedule multiple PxSCH communications on different subbands simultaneously. This segmentation enables efficient resource utilization while maintaining a unified scheduling approach through the single grant.
Solution Approach 2:
The patent introduces a new dimension for resource allocation by utilizing frequency division within the FD slot. Instead of scheduling communications sequentially in time, the system allocates different frequency subbands for different communications, enabling parallel transmissions and improving resource allocation efficiency.
2Productivity
If frequency resources are divided into distinct subbands for simultaneous uplink and downlink transmissions, then network performance is enhanced, but the difficulty of detecting and measuring resources increases
Solution Approach 1:
The patent applies local quality by assigning specific frequency subbands to specific communication types (uplink or downlink) within the FD slot. Each subband is optimized for its designated purpose, allowing simultaneous transmissions without interference while maintaining clear resource boundaries for detection and measurement.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a grant scheduling communications during a full-duplex slot, the communications including a first communications using a first one or more resource block sets and a second communications using a second one or more resource block sets. The UE may identify, based at least in part on a time domain resource allocation field indicated in the grant, a first frequency resource for the first one or more resource block sets and a second frequency resource for the second one or more resource block sets. The UE may perform the communications during the full-duplex slot and using the first frequency resource and the second frequency resource.