PUCCH Beam Management via TCI and Time Thresholds
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Solution Overview
Problem
Current wireless communication systems face limitations in flexibility and efficiency, particularly in managing uplink control information for ultra-reliable low-latency communications, where existing methods struggle to provide reliable and low-latency data transmission.
Innovation Solution
The implementation of a user equipment (UE) and base station apparatus with advanced circuitry to manage physical downlink and uplink channels, using transmission configuration indications (TCI) and control resource sets (CORESETs) to optimize the transmission and reception of physical uplink control channels (PUCCH) based on the presence of a TCI field and time duration thresholds, ensuring efficient and reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods are used for managing uplink control information, then device complexity is reduced, but communication reliability and latency performance deteriorate
Solution Approach 1:
The patent implements dynamic beam management where the UE determines different PUCCH transmission beams based on the time duration between PDCCH and PDSCH. When the time duration is sufficient, one beam management approach is used; when insufficient, another approach is applied. This dynamic adaptation resolves the contradiction by adjusting complexity based on actual communication conditions to maintain reliability.
Solution Approach 2:
The patent changes the parameter of beam selection based on the time duration threshold between PDCCH and PDSCH. By monitoring this time parameter and adjusting the PUCCH transmission beam accordingly, the system achieves reliable communication while managing device complexity through condition-based parameter adjustment.
2Adaptability or versatility
If advanced beam management techniques are implemented, then communication flexibility and efficiency are improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by implementing advanced beam management only when necessary - specifically when the time duration between PDCCH and PDSCH meets certain thresholds. The UE selectively applies complex beam determination techniques only in scenarios where they provide benefit, rather than universally, thus improving flexibility without unnecessarily increasing overall device complexity.
Solution Approach 2:
The system dynamically adjusts its operational mode based on time duration conditions. When the time duration threshold is met, more flexible and efficient beam management techniques are activated; otherwise, simpler methods are used. This dynamic approach enables the system to achieve adaptability while controlling complexity through conditional activation.
3Loss of time
If conditional PUCCH transmission based on time duration threshold is implemented, then latency is reduced, but measurement and detection difficulty increases
Solution Approach 1:
The base station pre-configures the time duration threshold to the UE before actual PUCCH transmission occurs. This preliminary configuration allows the UE to quickly compare the actual time duration against the pre-known threshold without complex real-time analysis, thereby reducing latency while keeping measurement and detection relatively simple.
Data Source
AI summary
A user equipment (UE) is described. Higher layer circuitry is configured to receive first information, second information, and third information. Receiving circuitry is configured to receive a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH). Transmitting circuitry is configured to transmit a physical uplink control channel (PUCCH). The first information indicates one or more combinations, each combination including a downlink transmission configuration indication (TCI) and an uplink TCI. The second information indicates whether to configure a presence of a TCI field in downlink control information (DCI) carried by the PDCCH. The third information indicates a time duration threshold between the PDCCH and the PDSCH. The transmitting circuitry transmits the PUCCH based on a first combination, a second combination, or a third combination.