Short PUCCH Positioning for 5G Control Signaling
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Solution Overview
Problem
Current 4G communication systems face limitations in supporting higher data rates and diverse service requirements, such as peak data rates, user experienced data rates, spectrum efficiency, mobility, latency, connection density, energy efficiency, and area traffic capacity, which are expected to be enhanced in 5G systems.
Innovation Solution
The implementation of a 5G communication system that includes user equipment (UE) and base stations equipped with transceivers and processors capable of identifying and transmitting orthogonal frequency division multiplexing (OFDM) symbols for short physical uplink control channels (PUCCH), enabling efficient communication and positioning within slots, and supporting advanced access technologies like massive multiple-input multiple-output (MIMO) and beamforming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 4G communication systems are used, then current infrastructure is maintained, but data rates and network capacity cannot meet 5G requirements
Solution Approach 1:
The patent implements dynamic slot structure where the number of OFDM symbols for short PUCCH can be flexibly configured (1, 2, or 3 symbols) based on service requirements. This dynamic configuration allows the system to adapt to different data rates and service types, resolving the contradiction between maintaining infrastructure and meeting diverse 5G service requirements
Solution Approach 2:
The system changes key parameters including OFDM symbol duration, subcarrier spacing, and slot structure to support both high data rates and diverse services. By adjusting these parameters, the system can transition between different service modes while maintaining the underlying 4G infrastructure
2Reliability
If more resources are allocated for control channels, then control reliability improves, but available resources for data transmission decrease
Solution Approach 1:
The patent uses short PUCCH format that transmits control information in a compact form occupying only 1-3 OFDM symbols per slot, which is partial action compared to traditional control channels. This provides sufficient control reliability while minimizing resource consumption, leaving more resources for data transmission
Solution Approach 2:
The control channel is segmented into short PUCCH transmissions distributed across multiple slots rather than requiring large contiguous resources. This segmentation maintains control reliability through frequent transmissions while improving overall data transmission capacity by utilizing scattered resources efficiently
3Device complexity
If slot structure is simplified, then processing complexity reduces, but flexibility to support diverse services decreases
Solution Approach 1:
The patent designs a universal slot structure that can accommodate multiple service types through configurable parameters. The same basic slot framework supports both low-latency services (with 1-symbol PUCCH) and high-reliability services (with 3-symbol PUCCH), reducing processing complexity while maintaining service flexibility
Solution Approach 2:
The slot structure incorporates dynamic elements where the number of PUCCH symbols and resource allocation can be adjusted based on service requirements. This dynamic configuration allows a single slot structure design to handle diverse services without increasing fundamental processing complexity
Data Source
AI summary
A method of user equipment (UE) in a wireless communication system. The method comprises receiving, from a base station (BS), a downlink signal including position information for orthogonal frequency division multiplexing (OFDM) symbols of a short physical uplink control channel (PUCCH), determining, based on the position information, a position of the OFDM symbols of the short PUCCH included in a slot, and transmitting, to the BS, the short PUCCH using the OFDM symbols based on the determined position.