Nominal Resource Element Configuration for Wireless Decoding
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Solution Overview
Problem
In wireless communication systems, determining transport block size based on a table of modulation and coding schemes (MCS) and resource allocations becomes impractical, especially in New Radio (NR) networks, as the wireless device may not know the nominal number of resource blocks used by the base station, leading to decoding issues.
Innovation Solution
The base station transmits a set of candidate resource element parameters to the wireless device, allowing it to select and calculate the transport block size based on the selected nominal number of physical resource block resource elements, enabling accurate decoding of data transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a table of MCS and resource allocations is used to determine transport block size, then the determination process becomes standardized, but the system becomes impractical in NR networks where the wireless device does not know the nominal number of resource blocks
Solution Approach 1:
The patent changes the fundamental parameter from using fixed table-based determination to dynamic calculation based on nominal resource elements per resource block. The base station configures and signals the nominal RE value to the UE, allowing the transport block size to be calculated adaptively rather than looked up from predefined tables, thus resolving the contradiction between standardization and adaptability
Solution Approach 2:
The system transitions from static table-based TBS determination to dynamic calculation where the nominal number of resource elements can be configured and updated by the base station. This dynamic approach allows the system to adapt to different NR network conditions while maintaining a standardized calculation methodology
2Device complexity
If the wireless device uses pre-defined tables for transport block size determination, then the device complexity is reduced, but decoding accuracy deteriorates when the nominal number of resource blocks is unknown
Solution Approach 1:
The patent introduces an intermediary parameter - the nominal number of resource elements per resource block - which is configured by the base station and signaled to the UE. This intermediary enables accurate TBS calculation without requiring the UE to know the actual resource block allocation in advance, thus maintaining both low device complexity and high decoding accuracy
3Productivity
If the base station uses dynamic resource allocation without signaling nominal resource elements, then the resource utilization efficiency is improved, but the wireless device cannot accurately determine transport block size
Solution Approach 1:
The base station performs preliminary configuration by setting the nominal number of resource elements per resource block before actual data transmission. This preliminary action allows the UE to accurately determine transport block size for dynamic resource allocations, ensuring reliable decoding while maintaining high resource utilization efficiency
Data Source
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AI summary
Methods, systems, and devices for wireless communication are described. A base station may transmit a set of candidate resource element parameters to a wireless device. Each candidate resource element parameters may indicate a nominal number of physical resource block resource elements. The base station may then transmit downlink control information and a data transmission during a slot. The data transmission may include one or more transport blocks whose size is based on a nominal number of physical resource block resource elements. The wireless device may select one of the candidate resource element parameters from the set of candidate resource element parameters based at least in part on the downlink data, determine a transport block size for the data transmission, and decode the data transmission.