Frequency Domain Resource Indication for REDCAP UE Link Performance
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Solution Overview
Problem
5G New Radio (NR) networks face challenges in supporting Reduced Capability (REDCAP) UE devices with reduced baseband bandwidth, as existing methods are inefficient in providing enhanced signaling and messages, leading to performance issues with physical downlink data channel (PDSCH) due to limited resource allocation and power constraints.
Innovation Solution
A radio access network (RAN) node determines and transmits enhanced messages to REDCAP UE devices by identifying a set of physical resource blocks to be enhanced, with increased transmission power and frequency domain resource allocation, including system information and repeated transmissions, to improve link-level performance within the reduced baseband bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If enhanced messages are transmitted to REDCAP UE devices using standard resource allocation methods, then the network can maintain compatibility with standard UE devices, but the link-level performance of REDCAP UE devices deteriorates due to limited resource allocation and power constraints
Solution Approach 1:
The patent applies local quality by providing enhanced resource allocation and power boosting specifically for REDCAP UE devices while maintaining standard transmission for other UEs. The RAN node identifies REDCAP UEs and applies enhanced PDSCH transmission with increased power and dedicated resource blocks only to these devices, rather than uniformly across all UEs, thus improving their link-level performance without affecting standard UE compatibility
Solution Approach 2:
The patent changes transmission parameters including power level and resource block allocation specifically for REDCAP UE devices. The RAN node adjusts the power boosting parameter and resource allocation parameters dynamically based on UE capability identification, providing higher power and optimized resource allocation to REDCAP UEs while maintaining standard parameters for other devices
2Reliability
If the RAN node increases transmission power for enhanced physical resource blocks to improve REDCAP UE performance, then the link-level performance improves, but the energy consumption and interference to other UEs increases
Solution Approach 1:
The patent applies local quality by restricting enhanced power transmission only to specific resource blocks allocated to REDCAP UE devices rather than increasing power across the entire frequency spectrum. The RAN node identifies and enhances only the necessary physical resource blocks, minimizing energy consumption and interference to other UEs while still improving link-level performance for target devices
3Reliability
If the network provides dedicated resource allocation for REDCAP UE devices, then the link-level performance improves, but the device complexity and network configuration complexity increases
Solution Approach 1:
The patent manages complexity by dynamically adjusting resource allocation parameters based on UE capability identification. The RAN node determines whether a UE is REDCAP-capable and automatically applies appropriate resource allocation and power boosting parameters without requiring manual configuration, thus improving performance while keeping the system adaptable and relatively simple to operate
Data Source
AI summary
In a system, apparatus, method, and non-transitory computer readable medium related to for providing a frequency domain resource set indication for reduced capability user equipment (UE), a radio access network node is caused to, determine whether to provide enhanced messages to a UE device via at least one enhanced physical resource block (PRB) based on a network setting, provide a resource set indication to the UE device based on results of the determining, the resource set indication indicating a set of physical resource blocks which are to be enhanced, transmit downlink control information (DCI) to the UE device, the DCI including a frequency domain resource allocation indication indicating a plurality of physical resource blocks assigned to at least one desired message, and transmit the at least one desired message to the UE device based on the frequency domain resource allocation indication.