Configured Grant PUSCH Unused Indicator Reporting
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Solution Overview
Problem
Current wireless communication systems, particularly 5G NR, face inefficiencies in optimizing resource usage due to unused Physical Uplink Shared Channel (PUSCH) occasions within Configured Grant (CG) periodicities, leading to wastage of radio resources.
Innovation Solution
A method and apparatus for a User Equipment (UE) to determine and report Unused PUSCH Indicators (UPI) within CG periodicities, where each UPI indicates unused PUSCH occasions, allowing for efficient resource reallocation by transmitting these indicators via Uplink Control Information (UCI), with the bit length of each UPI determined by the total number of PUSCH occasions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple PUSCH occasions are allocated within a CG periodicity to ensure sufficient uplink resources, then resource availability is improved, but unused PUSCH occasions lead to radio resource wastage
Solution Approach 1:
The patent implements a feedback mechanism where the UE reports unused PUSCH occasion information to the base station. The UE determines which PUSCH occasions within a CG periodicity were not used for uplink transmission and sends this information back to the network, enabling the base station to make informed decisions about resource reallocation and optimize overall resource utilization.
Solution Approach 2:
The patent changes the parameter representation by encoding unused PUSCH occasion information into a compact bit pattern. Each bit in the pattern corresponds to a specific PUSCH occasion, allowing efficient transmission of resource usage status. This parameter transformation enables the base station to quickly identify and reallocate unused resources without processing complex information.
2Adaptability or versatility
If configured grant resources are allocated for XR services with variable packet sizes, then service flexibility is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The feedback mechanism allows the base station to adapt resource allocation based on actual XR service traffic patterns. By receiving reports on unused PUSCH occasions, the network can dynamically adjust future resource allocations to better match actual demand, improving both service flexibility and resource utilization efficiency for XR applications with variable packet sizes.
Solution Approach 2:
The patent introduces dynamic resource optimization through continuous monitoring and reporting of PUSCH usage. Rather than static resource allocation, the system dynamically adapts to actual traffic conditions by reallocating unused configured grant resources to other purposes, enabling the network to handle the dynamic nature of XR services more effectively.
3Productivity
If configured grant resources are released for reallocation, then resource utilization is improved, but service reliability may worsen due to potential resource conflicts
Solution Approach 1:
The feedback mechanism provides the base station with accurate information about which configured grant resources are truly unused before reallocation decisions are made. This feedback-driven approach ensures that resources are only released when confirmed unused, preventing conflicts with active XR services while maximizing opportunities for efficient resource reallocation to other purposes.
Data Source
AI summary
Methods and apparatuses for reporting Configured Grant (CG) resource usage status are provided. The method includes determining a plurality of Physical Uplink Shared Channel (PUSCH) occasions within a CG periodicity based on a CG configuration; and transmitting a respective Unused PUSCH Indicator (UPI) in each PUSCH occasion in the plurality of PUSCH occasions that is used by the UE within the CG periodicity, each UPI indicating a set of one or more PUSCH occasions in the plurality of PUSCH occasions that is not used by the UE within the CG periodicity, where a bit length of each UPI is determined based on a total number of the plurality PUSCH occasions within the CG periodicity.