Dynamic Repetition for Uplink Control Channel Reliability
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Solution Overview
Problem
Current wireless communication systems face challenges in ensuring reliable reception of uplink control channel information due to interference and coverage quality issues, particularly for short control channels like the physical uplink control channel (PUCCH), leading to potential interruptions in data communication.
Innovation Solution
Implementing dynamic repetition techniques for the uplink control channel, where user equipment (UE) repeats the transmission of control channel information based on received instructions, increasing transmission energy and improving signal-to-interference-plus-noise ratio (SINR) at the base station, thereby ensuring uninterrupted data communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic repetition is implemented for uplink control channel, then reception energy and reliability are improved, but transmission time and resource usage increase
Solution Approach 1:
The patent implements dynamic repetition by allowing the base station to configure different repetition factors (K1, K2, K3) based on current channel conditions, UE capability, and traffic requirements. The repetition count is not fixed but adapts dynamically through RRC signaling, enabling the system to optimize between reliability and time loss in real-time.
Solution Approach 2:
The patent changes the parameter of repetition factor from a static value to a dynamically configurable parameter. The base station can adjust the repetition count (K1 for first repetition, K2 for second repetition, K3 for third repetition) based on SINR conditions, UE capability indicators, and network requirements, thereby optimizing the trade-off between reception reliability and transmission time.
2Reliability
If multiple repetition transmissions are performed, then signal-to-interference-plus-noise ratio is improved, but uplink resource consumption increases
Solution Approach 1:
The patent applies partial repetition by transmitting the uplink control channel information K times (where K ≥ 1) instead of always transmitting the maximum possible repetitions. The base station configures the optimal repetition count based on current channel conditions, UE capability, and network requirements, avoiding unnecessary resource consumption when full repetition is not needed.
Solution Approach 2:
The repetition factor is dynamically adjusted based on UE capability indicators and channel conditions. The UE reports its capability (maximum supported repetition count), and the base station determines the actual repetition count (K1, K2, K3) to balance SINR improvement with resource conservation, preventing excessive energy consumption.
3Reliability
If repetition factor is increased beyond UE capability, then reception reliability improves, but UE processing complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the UE reports its capability indicator (maximum supported repetition count) to the base station. The base station uses this feedback to configure appropriate repetition factors that do not exceed UE capabilities, preventing excessive processing complexity while maintaining adequate reliability through dynamic adjustment.
Solution Approach 2:
The patent dynamically adjusts the repetition factor parameter based on UE capability feedback. The base station configures K1, K2, K3 values that are tailored to each UE's processing capabilities, ensuring that repetition is applied at levels the UE can handle without excessive complexity while still achieving the desired reliability improvement.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a transmitter, information regarding repeating a communication associated with an uplink control channel. The UE may transmit the communication associated with the uplink control channel based at least in part on the information. Numerous other aspects are provided.