Aperiodic Configured Grant Uplink Resource Selection
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in resource allocation for aperiodic configured grant uplink communications, leading to delays, inefficiencies, and increased control signaling overhead, especially when traffic arrival is random or does not correspond with pre-configured uplink occasions.
Innovation Solution
Configuring a resource pool with continuous bursts of resources and providing parameters for identifying a resource set within the pool, allowing user equipment (UE) to select resources based on traffic arrival, even if it does not align with pre-defined uplink occasions, thereby reducing delays and inefficiencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If pre-configured uplink occasions are used for configured grant communications, then resource allocation is simplified and control signaling overhead is reduced, but transmission delays increase when traffic arrival does not align with pre-configured occasions
Solution Approach 1:
The resource pool is segmented into multiple resource sets, each associated with different periodicities. This allows the system to provide both pre-configured resources (for low complexity) and flexible resources (for reduced delay) by dividing the overall resource pool into manageable subsets with different characteristics.
Solution Approach 2:
The system dynamically selects which resource set to use based on traffic conditions and timing requirements. When traffic arrives at pre-configured occasions, simpler resource sets are used; when traffic arrives between occasions, the system can dynamically access other resource sets, providing adaptability without requiring complete reconfiguration.
2Adaptability or versatility
If multiple resource sets with different periodicities are configured, then flexibility and adaptability to random traffic patterns improve, but control signaling overhead and configuration complexity increase
Solution Approach 1:
The UE autonomously selects appropriate resources from the configured resource sets based on traffic arrival timing without requiring dynamic network control signaling. The network only provides initial configuration information, after which the UE independently makes resource selection decisions, significantly reducing ongoing control overhead.
Solution Approach 2:
Different resource sets are defined with varying parameters (periodicities, time offsets, frequency resources). By changing these parameters across different resource sets, the system achieves high adaptability to various traffic patterns while maintaining a single static configuration, avoiding the need for dynamic parameter reconfiguration signaling.
3Productivity
If contiguous resources are allocated in time for configured grant communications, then resource allocation simplicity is maintained, but resource utilization efficiency decreases when traffic is aperiodic
Solution Approach 1:
The resource pool is divided into multiple resource sets with different periodicities and time allocations. This segmentation allows contiguous resources to be allocated within each resource set for simplicity, while the collection of segmented resource sets collectively provides high resource utilization by matching different periodicities to different traffic patterns.
Solution Approach 2:
Different local regions of the resource pool (different resource sets) are optimized for different local conditions (different periodicities). Each resource set maintains simple contiguous allocation characteristics locally, while the overall system achieves high utilization by applying the appropriate local quality (resource set) to each traffic instance.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a configuration of a resource pool for configured grant uplink communications and one or more parameters for identifying a resource set from the resource pool, wherein the resource set is a subset of resources in the resource pool; identify the resource set of the resource pool based at least in part on the one or more parameters; and transmit a configured grant uplink communication in a resource selected from the resource set. Numerous other aspects are provided.