PUCCH Repetition Resource Allocation for Control Signal Reliability
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Solution Overview
Problem
Conventional solutions for control information transmission in communication systems, such as PUCCH/PUSCH, are inadequate for cases where repetitions occur, particularly when feedback collides or overlaps in time domain, leading to unclear design details and reduced reliability and robustness.
Innovation Solution
The proposed solution involves transmitting first control information as a part of previous control information in a first slot and second control information in a subsequent slot using a determined set of resources, allowing for multiplexing, separate resources, or dropping one of the control information if overlap occurs, thereby enhancing reliability and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information repetitions are transmitted in multiple slots, then reliability of control information transmission is improved, but resource collision and overlap issues arise leading to scheduling complexity
Solution Approach 1:
The patent implements dynamic resource allocation for control information repetitions by allowing the network device to flexibly determine resource sets for different repetitions based on channel conditions and interference levels. The terminal device dynamically selects resources from available sets, enabling adaptive scheduling that resolves resource collisions while maintaining transmission reliability.
Solution Approach 2:
The patent segments control information transmission into multiple independent repetition instances, each with its own resource set. This segmentation allows independent handling of each repetition, enabling the system to manage resource allocation and resolve collisions on a per-repetition basis rather than treating all repetitions as a single complex scheduling problem.
2Productivity
If control information is transmitted using conventional PUCCH/PUSCH methods, then transmission capability is maintained, but reliability and robustness are reduced due to feedback collision and overlap
Solution Approach 1:
The patent introduces a new dimension for control information transmission by defining explicit resource sets for PUCCH repetitions that operate independently from conventional PUSCH-based methods. This dimensional separation allows the system to maintain conventional transmission capabilities while adding a more reliable repetition mechanism that avoids feedback collisions by operating in a distinct resource domain.
Solution Approach 2:
The patent creates explicit copies of control information through repetition transmission, where each repetition is a complete copy transmitted on independently allocated resources. This copying approach ensures that if one transmission instance experiences feedback collision or overlap, the other copies remain intact and can be successfully received, thereby improving overall reliability.
3Adaptability or versatility
If resource sets for control information are not explicitly defined, then scheduling flexibility is maintained, but transmission robustness is reduced due to unclear design details
Solution Approach 1:
The patent defines explicit resource set parameters for PUCCH repetitions, including specific time-frequency resource allocations, cyclic shift values, and orthogonal cover code indices. These parameter definitions provide clear design details that enhance transmission robustness while maintaining scheduling flexibility, as the network device can still adjust these parameters dynamically based on channel conditions and traffic requirements.
Data Source
AI summary
Embodiments of the present disclosure provide a solution for transmitting and receiving control information in a communication system. In a method for communication, a terminal device can determine that first control information is to be transmitted to a network device in a second slot after a first slot, the first control information being at least a part of previous control information transmitted in the first slot. The terminal device may determine a set of resources for second control information to be transmitted to the network device in the second slot. The terminal device may transmit, to the network device, at least one of the first control information and the second control information based on the set of resources. Embodiments of the present disclosure can improve the reliability and robustness of transmissions of control information in the communication system.