Frequency-Domain Resource Allocation for Multi-TRP Wireless Transmission
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Solution Overview
Problem
Current solutions for frequency-domain resource allocation in wireless communication networks, particularly in 5G New Radio (NR), are limited to specific cases where each data codeword is transmitted from a single transmission/reception point (TRP), and lack the flexibility to support multi-TRP transmissions effectively.
Innovation Solution
The proposed solution involves enhancing the frequency-domain resource allocation techniques by using Traffic Control Indicator (TCI) states and quasi-colocation (QCL) relationships to dynamically allocate resources for multi-TRP transmissions, allowing for non-overlapping and flexible resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency-domain resource allocation is limited to single-TRP transmission cases, then the allocation method is simple and well-defined, but it lacks flexibility to support multi-TRP transmissions effectively
Solution Approach 1:
The patent segments the frequency-domain resources by associating different resource allocations with different TCI states. Each TCI state represents a separate transmission configuration that can be linked to specific frequency resources, enabling multi-TRP transmission while maintaining manageable complexity through structured segmentation of resource allocation.
Solution Approach 2:
The patent introduces dynamic resource allocation by allowing the network to indicate different frequency-domain allocations corresponding to different TCI states. This enables flexible, dynamic assignment of resources to different TRPs based on transmission conditions, moving from static single-TRP allocation to dynamic multi-TRP allocation.
2Reliability
If traditional resource allocation methods are used, then the implementation is straightforward, but the spectral efficiency and reliability for low latency scenarios like URLLC are insufficient
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple TCI states with their associated frequency-domain resource allocations before transmission. This allows the system to quickly switch between different TRP configurations without real-time negotiation, reducing latency while maintaining high spectral efficiency through pre-optimized resource assignments.
Solution Approach 2:
The patent changes the parameter of resource allocation by introducing TCI state-based frequency-domain allocation. This parameter change enables the system to adapt resource distribution dynamically based on transmission requirements, improving both reliability for low-latency URLLC and spectral efficiency through optimized multi-TRP utilization.
Data Source
AI summary
Embodiments include methods, by a user equipment (UE), for receiving physical data channel transmissions from a wireless network. Such methods include receiving, from the wireless network, configuration information including: a first indication of one or more frequency-domain resource allocations for respective corresponding one or more physical data channel transmissions by respective corresponding one or more sources configured by the wireless network, and one or more second indications of further characteristics of the physical data channel transmissions. Such methods also include, based on the second indications, determining the number of frequency-domain resource allocations indicated by the first indication. Such methods also include receiving, from the wireless network, the determined number of physical data channel transmissions based on the respective indicated frequency-domain resource allocations. Other embodiments include complementary methods performed by a wireless network, and UEs and wireless networks configured to perform such methods.