Uplink Control Information Transmission in 5G Wireless Nodes
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, the transmission of uplink control information on repeatedly transmitted uplink physical-layer data channels faces challenges such as allocation and resource element (RE) management, which affects transmission reliability and performance.
Innovation Solution
A method involving the transmission of K first radio signals in K time-frequency resource blocks, where each pair is orthogonal in the time domain, with specific allocation of REs to ensure reliable transmission of uplink control information without degrading the performance of the physical-layer data channel, using coefficients to determine the number of REs occupied by sub-signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink control information is transmitted on repeatedly transmitted uplink physical-layer data channels, then transmission reliability of uplink control information is improved, but resource element allocation complexity increases
Solution Approach 1:
The patent segments the K repetitions into K1 repetitions for carrying uplink control information and K-K1 repetitions for carrying only physical-layer data. This segmentation resolves the contradiction by clearly defining which repetitions allocate REs for control information, thereby improving transmission reliability while reducing the complexity of resource element allocation through structured division.
Solution Approach 2:
The patent applies local quality by allowing different repetitions to have different functions: K1 repetitions are configured to carry both physical-layer data and uplink control information, while K-K1 repetitions carry only physical-layer data. This localized differentiation optimizes resource element allocation in specific repetitions, improving overall transmission reliability without requiring complex allocation across all repetitions.
2Reliability
If more REs are allocated to uplink control information in repetitions, then transmission reliability is improved, but transmission performance of physical-layer data channel deteriorates
Solution Approach 1:
The patent applies partial action by allocating REs for uplink control information to only K1 out of K total repetitions, rather than all repetitions. The number of REs in each repetition is calculated as a proportion (using coefficients beta_OCPI and alpha) of the total REs available, ensuring that control information gets sufficient resources without excessively compromising data channel performance across all repetitions.
Solution Approach 2:
The patent uses parameter changes by introducing configurable coefficients (beta_OCPI, alpha, K1/K ratio) that allow dynamic adjustment of the balance between control information and data transmission. By changing these parameters, the system can optimize the trade-off between transmission reliability of control information and transmission performance of the data channel according to specific network conditions.
3Reliability
If uplink control information is carried on all K repetitions, then transmission reliability is improved, but time resource utilization efficiency decreases
Solution Approach 1:
The patent segments the K repetitions into two functional groups: K1 repetitions that carry uplink control information and K-K1 repetitions that are dedicated to physical-layer data only. This segmentation improves time resource utilization by allowing data-only repetitions to be used efficiently without control information overhead, while still ensuring control information transmission reliability through the K1 repetitions.
Data Source
AI summary
The present disclosure provides a method and device in node for wireless communications. A first node receives a first signaling and a second signaling; transmits K first radio signals in K time-frequency resource blocks respectively; the K time-frequency resource blocks are orthogonal in time domain; the first signaling indicates the K time-frequency resource blocks; only K1 first radio signals in the K first radio signals respectively comprise K1 second sub-signals, the K1 second sub-signals carry a second bit block, and the second signaling is used to determine the second bit block; a total number of REs occupied by the K1 second sub-signals is not greater than a first value, and a first coefficient is used to determine the first value. When control information is carried on a repeatedly transmitted physical layer data channel, the above method ensures the reliability of data and the control information.