Configured Grant Uplink Signaling With UTO-UCI Bitmap Feedback
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Solution Overview
Problem
There is a need for methods to efficiently transmit data packets in wireless communication systems, minimize waste of radio resources due to semi-persistent scheduling or configured grants, and accurately inform base stations of the actual use of scheduled radio resources.
Innovation Solution
A method and device for transmitting uplink signals using a configured grant (CG) that includes unused transmission occasion uplink control information (UTO-UCI), where an N-bit bitmap is used to indicate whether the UE is capable of transmitting on subsequent CG PUSCH occasions, with bit values indicating transmission or non-transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semi-persistent scheduling or configured grants are used to transmit data packets, then resource allocation efficiency is improved, but radio resource waste occurs when transmissions are not needed
Solution Approach 1:
The patent implements a feedback mechanism where the UE sends an N-bit bitmap to the base station indicating whether it will transmit on each configured CG PUSCH occasion. This feedback allows the base station to dynamically adjust or cancel configured grants based on actual transmission needs, preventing radio resource waste while maintaining efficient resource allocation when transmissions are required.
2Reliability
If configured grants are allocated to ensure transmission capability, then communication reliability is improved, but resource utilization efficiency deteriorates when transmissions are not performed
Solution Approach 1:
The patent introduces dynamic adjustment of configured grants based on real-time transmission needs. The base station receives bitmap feedback from the UE indicating actual transmission intentions and dynamically modifies or cancels CG PUSCH configurations accordingly. This dynamic approach maintains transmission reliability when needed while optimizing resource utilization by avoiding allocations for unused transmissions.
3Reliability
If the base station schedules CG PUSCH occasions to ensure coverage, then transmission reliability is improved, but information about actual resource usage is lost
Solution Approach 1:
The patent implements a feedback mechanism where the UE sends an N-bit bitmap to the base station indicating whether it will transmit on each configured CG PUSCH occasion. This feedback provides the base station with accurate information about actual resource usage intentions, enabling informed scheduling decisions while maintaining transmission coverage through configured grants.
Data Source
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AI summary
ABSTRACT: A user equipment (UE) may receive a configured grant (CG) configuration; and transmit a first CG physical uplink shared channel (PUSCH) including unused transmission occasion uplink control information (UTO-UCI) on a first CG PUSCH occasion based on the CG configuration. The UTO-UCI may include an N-bit bitmap, where N is a predetermined positive integer. N bits of the N-bit bitmap may be mapped one-to-one to N CG PUSCH occasions subsequent to the first PUSCH occasion, where each of the N bits has a first bit value or a second bit value. The first bit value indicates that the UE is capable of transmitting a CG PUSCH on a related CG PUSCH occasion, and the second bit value indicates that the UE transmits no CG PUSCH on a related CG PUSCH occasion.