Wireless Node PRB Bundle Allocation for RedCap UE
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting Reduced Capability (RedCap) User Equipment (UE) due to differences in processing capabilities, leading to issues in resource allocation, energy conservation, and transmission performance.
Innovation Solution
A method and apparatus for wireless communication that involves receiving and transmitting DCI formats to allocate PRB bundles within specific sub-bands, where the size of the DCI fields is determined by a value related to the number of PRBs, allowing for optimized resource allocation, improved flexibility, and energy conservation, while maintaining compatibility with existing standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If resource allocation is optimized for RedCap UE with reduced processing capabilities, then energy conservation and transmission performance are improved, but device complexity and scheduling flexibility are reduced
Solution Approach 1:
The patent divides the frequency domain into multiple sub-bands, with each sub-band containing a specific number of PRBs. This segmentation allows the system to allocate resources in manageable units tailored to RedCap UE capabilities, reducing the computational burden of scheduling while improving energy efficiency through targeted resource allocation.
Solution Approach 2:
The patent applies different resource allocation strategies to different sub-bands based on local conditions. By configuring the number of PRBs per sub-band according to specific requirements, the system optimizes energy consumption and transmission performance for RedCap UE without requiring complex global optimization, thus reducing scheduling complexity.
2Productivity
If the number of PRBs per sub-band is increased to improve resource allocation efficiency, then resource utilization is improved, but the field size in DCI format increases leading to higher overhead
Solution Approach 1:
The patent makes the number of PRBs per sub-band configurable rather than fixed. This dynamic configuration allows the system to adapt the PRB count to specific deployment scenarios and UE capabilities, optimizing resource allocation efficiency while controlling DCI overhead by selecting appropriate PRB values for different situations.
3Reliability
If precoding flexibility is increased to improve transmission performance, then channel estimation accuracy is improved, but processing complexity and energy consumption increase
Solution Approach 1:
The patent divides the frequency domain into sub-bands and applies precoding operations within each sub-band rather than across the entire bandwidth. This segmentation reduces the computational complexity of precoding and channel estimation for RedCap UE while maintaining transmission performance through localized optimization in each sub-band.
Data Source
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AI summary
The present application discloses a method and apparatus used in a node for wireless communication. A first receiver receives a first DCI format; a first transceiver operates a first signal, the first signal occupying at least one PRB bundle in a frequency domain, any PRB bundle occupied by the first signal in the frequency domain belonging to a first sub-band, the first sub-band comprising a plurality of consecutive PRBs, and a first value being equal to the number of PRBs comprised in the first sub-band; wherein the first DCI format comprises a first field; the first field in the first DCI format is used for indicating a frequency domain resource occupied by the first signal, and the size of the first field in the first DCI format is related to the first value; a target PRB bundle is the PRB bundle occupied by the first signal in the frequency domain; and the number of PRBs comprised in the target PRB bundle is related to both the number of PRBs scheduled by the first DCI format and a target threshold.