5G xPUCCH Format Determination and Resource Allocation
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Solution Overview
Problem
Current 4G LTE networks face challenges in efficiently handling the physical uplink control channel (PUCCH) procedures, particularly in 5G networks, where the co-scheduling of PUCCH and physical uplink shared channel (PUSCH) in the same subframe leads to resource usage inefficiencies and potential collisions, affecting UCI transmission and link budget considerations.
Innovation Solution
The implementation of new 5G physical uplink control channel (xPUCCH) procedures, including defined formats and resource allocation methods, along with collision handling mechanisms, such as time division multiplexing and configuration parameters, to manage UCI transmission and ensure efficient resource utilization, even in cases where xPUSCH and xPUCCH are scheduled in the same subframe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PUCCH and PUSCH are co-scheduled in the same subframe, then resource utilization is improved, but resource usage inefficiencies and collisions occur
Solution Approach 1:
The patent segments the uplink transmission by dividing PUCCH and PUSCH into separate time resources within the subframe. Specifically, PUCCH is transmitted in the first slot and PUSCH in the second slot, preventing simultaneous transmission and eliminating collisions while maintaining efficient resource utilization through structured time-division multiplexing.
Solution Approach 2:
The patent implements dynamic resource allocation where the network can flexibly configure whether PUCCH and PUSCH are transmitted in the same subframe based on traffic conditions. The UE adapts its transmission behavior according to received downlink control information, allowing the system to dynamically optimize between resource utilization and transmission reliability.
2Productivity
If PUCCH format and resource allocation are optimized for efficiency, then UCI transmission efficiency is improved, but collision handling complexity increases
Solution Approach 1:
The patent establishes predetermined rules for collision handling that are configured in advance through higher-layer signaling. When PUCCH and PUSCH are scheduled in the same subframe, the UE follows pre-defined procedures such as dropping PUCCH or multiplexing UCI on PUSCH, eliminating the need for complex real-time collision resolution algorithms and reducing device complexity.
Solution Approach 2:
The patent optimizes PUCCH format selection and resource allocation parameters based on UCI payload size and transmission conditions. By adjusting parameters such as modulation scheme, coding rate, and resource block allocation, the system achieves efficient UCI transmission while maintaining manageable collision handling through parameter-based adaptation rather than complex procedural logic.
Data Source
AI summary
Techniques related to physical uplink control channel procedures are described. Briefly, in accordance with one embodiment, an Uplink Control Information (UCI) payload size is determined based at least in part on configuration information and Downlink Control Information (DCI). A Fifth Generation (5G) Physical Uplink Control Channel (xPUCCH) format is then determined based at least in part on the determined UCI payload size. Other embodiments are also disclosed and claimed.