Shared Resource Pools for 5G TRP Collision Avoidance
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Solution Overview
Problem
In wireless communication systems, particularly in 5G NR, multiple transmission and reception points (TRPs) that do not coordinate with each other can cause collisions during resource allocation, leading to wasted resources as they may allocate the same resources in time and frequency for communications with a user equipment (UE), resulting in undecodable communications.
Innovation Solution
The implementation of separate and shared resource pools for each TRP, with specific DCI formats for resource grants, allows for collision avoidance by configuring each TRP to use a single or multiple control messages based on the resource pool type, thereby minimizing the need for coordination between TRPs and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple TRPs allocate resources independently without coordination, then device complexity and signaling overhead are reduced, but resource collisions increase leading to wasted resources
Solution Approach 1:
The resource space is segmented into multiple resource pools, each associated with specific TRPs. This segmentation allows TRPs to independently allocate resources within their designated pools without coordinating with other TRPs, thereby reducing coordination complexity while preventing resource collisions through the partitioning of the resource space.
2Reliability
If separate resource pools are configured for each TRP, then resource collisions are reduced, but device complexity and signaling overhead increase
Solution Approach 1:
The resource pool configuration mechanism serves multiple functions: it defines resource allocation boundaries for each TRP, enables independent resource allocation, and provides a framework for both dedicated and shared resource pools. This multi-functionality reduces the need for separate coordination mechanisms while maintaining communication reliability.
3Productivity
If shared resource pools are used between TRPs, then resource utilization efficiency improves, but coordination requirements increase leading to higher signaling overhead
Solution Approach 1:
Resource pools are pre-configured and associated with specific TRPs before resource allocation occurs. This preliminary action establishes clear boundaries and ownership of resource pools, enabling TRPs to independently allocate resources without real-time coordination, thereby maintaining high resource utilization efficiency while minimizing signaling overhead.
Data Source
AI summary
The apparatus may be associated with at least a first TRP and may be configured to configure at least a first resource pool associated with the first TRP and a second resource pool associated with both the first TRP and a second TRP. The apparatus may further be configured to provide a grant for a resource for a first communication with the first TRP using one of a single control message based on the resource being in the first resource pool, or multiple control messages based on the resource being in the second resource pool. In an aspect of the disclosure, the apparatus may be configured to receive the configuration for at least the first resource pool and the second resource pool to receive a grant for the resource for the first communication via one of the single control message, or the multiple control messages.