Dynamic Feedback Bit Allocation for Wireless Grants
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing feedback bits during feedback occasions, leading to inefficiencies in resource allocation and potential mismatches in codebook sizes.
Innovation Solution
A method and apparatus for wireless communications that involve receiving a feedback configuration indicating the number of feedback bits to provide for each grant within a feedback occasion, and transmitting a feedback message with a respective set of bits for each grant, where the number of bits corresponds to the feedback configuration, allowing for flexible adjustment of feedback bits based on the number of downlink shared channel transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed number of feedback bits is allocated for each grant in a feedback occasion, then the codebook size remains consistent, but resource allocation efficiency decreases and signaling overhead increases
Solution Approach 1:
The patent implements dynamic feedback bit allocation where the number of feedback bits for each grant is adjusted based on the actual number of downlink shared channel transmissions. This dynamic approach allows the feedback configuration to adapt to varying traffic conditions, improving resource allocation efficiency while maintaining codebook consistency through proper bit determination methods.
Solution Approach 2:
The patent changes the parameter of feedback bit count from a fixed value to a variable determined by the actual number of downlink transmissions. By modifying this parameter dynamically, the system achieves better resource utilization and reduces signaling overhead while preventing codebook size mismatches through the proposed bit determination mechanism.
2Quantity of substance
If feedback bits are reduced to match the actual number of downlink transmissions, then signaling overhead decreases, but codebook size mismatches may occur
Solution Approach 1:
The patent employs a feedback mechanism where the UE determines the number of feedback bits based on the actual number of downlink shared channel transmissions received. This feedback approach allows the system to reduce signaling overhead by allocating only the necessary number of bits while maintaining codebook size consistency through the structured bit determination process defined in the feedback configuration.
3Stability of the object's composition
If the number of feedback bits is increased to accommodate potential transmissions, then codebook size consistency is maintained, but resource allocation efficiency decreases
Solution Approach 1:
The patent transitions from static feedback bit allocation to dynamic allocation based on actual transmission needs. This allows the system to maintain codebook size consistency only when necessary while improving resource allocation efficiency by reducing feedback bits when fewer transmissions occur, achieving an optimal balance between stability and productivity.
4Productivity
If flexible feedback bit allocation is implemented, then resource allocation efficiency improves, but system complexity increases
Solution Approach 1:
The patent segments the feedback configuration into manageable components, where the number of feedback bits is determined separately for each grant based on the actual number of downlink transmissions. This segmentation approach simplifies the implementation of flexible feedback bit allocation by breaking down the complex configuration into discrete, easily manageable units.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A base station may transmit a feedback configuration to a user equipment (UE) in control signaling, such as radio resource control (RRC) signaling, a medium access control (MAC) control element (MAC-CE), or a downlink control information (DCI) message. The feedback configuration may indicate a number of feedback bits to provide for each grant within a feedback occasion. The UE may receive scheduling information indicating one or more grants for the UE within the feedback occasion. The UE may transmit a feedback message based on receiving the grants, where the feedback message includes a set of bits for each grant within the feedback occasion. The number of bits in the set may be based on the feedback configuration.