PUSCH Resource Cap for HARQ-ACK and UL-SCH Multiplexing
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Solution Overview
Problem
In 5G wireless communication systems, existing methods for determining transmission resources for control information on a Physical Uplink Shared Channel (PUSCH) can lead to all resources being occupied by one type of control information, preventing the transmission of UL-SCH data or other control information.
Innovation Solution
A method to determine a cap of transmission resources for control information on a PUSCH using a ratio coefficient, which is configured by a base station via higher layer signaling, to ensure that not all resources are allocated to a single type of control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a quantity of bits of HARQ-ACK is greater than that of UL-SCH data, then all PUSCH resources are used for transmitting HARQ-ACK, but UL-SCH data cannot be transmitted
Solution Approach 1:
The patent introduces a ratio coefficient parameter (beta) to dynamically adjust the resource allocation ratio between HARQ-ACK and UL-SCH data. By changing this parameter, the system can control the cap value that limits HARQ-ACK resources, ensuring that even when HARQ-ACK bit quantity exceeds UL-SCH data, a portion of resources is reserved for data transmission. This resolves the contradiction by transforming the resource allocation from an all-or-nothing scenario to a controlled balance.
2Quantity of substance
If base station allocates more physical resource blocks to user equipment, then more resources are available for control information, but UL-SCH data still cannot be transmitted due to cap value limitation
Solution Approach 1:
The patent applies partial action by introducing a cap value that intentionally limits HARQ-ACK resource usage to a portion of available resources, even when excess resources are allocated. The ratio coefficient ensures that HARQ-ACK uses only a controlled fraction (beta) of the available resources, leaving remaining resources for UL-SCH data. This prevents the excessive allocation of all resources to control information while maintaining sufficient resources for reliable HARQ-ACK transmission.
3Reliability
If all PUSCH resources are occupied by one type of control information, then control information transmission is ensured, but other control information or data cannot be transmitted
Solution Approach 1:
The patent uses the ratio coefficient parameter to dynamically control resource allocation for different control information types. By adjusting beta, the system can ensure minimum resource guarantees for primary control information (like HARQ-ACK) while maintaining adaptability to transmit other control information (CSI, SR) or data simultaneously. This resolves the contradiction between ensuring control information reliability and maintaining system versatility.
Data Source
AI summary
Provided are a method and an apparatus of determining a cap of transmission resources available for control information and a communication device. The method of determining a cap of transmission resources available for control information includes: determining, according to a ratio coefficient, a cap of transmission resources to be occupied by coded modulation symbols of control information on a physical uplink shared channel (PUSCH).