PUCCH Format X for Uplink Control Information Transmission
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Solution Overview
Problem
Current LTE systems face challenges in transmitting uplink control information (UCI) exceeding 22 bits, particularly with the increasing number of aggregated cells, which requires a new PUCCH format to efficiently handle larger payloads and diverse UCI types.
Innovation Solution
A method for transmitting UCI using a new PUCCH format (PUCCH format X) that optimizes power control and resource allocation, allowing for the simultaneous transmission of multiple UCI types, including HARQ-ACK, P-CSI, and A-CSI, by configuring uplink power control parameters based on different UCI combinations and modulation schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If PUCCH format 3 is used to transmit UCI, then the system can transmit up to 22 bits of control information, but the system cannot transmit UCI exceeding 22 bits
Solution Approach 1:
The patent segments the UCI transmission into different formats based on payload size and content type. PUCCH format 3 is used for smaller payloads (up to 22 bits), while a new PUCCH format X is introduced for larger payloads exceeding 22 bits. This segmentation allows the system to maintain efficiency for common cases while extending capability for advanced scenarios.
Solution Approach 2:
The patent introduces dynamic configuration mechanisms where the eNodeB can flexibly configure which PUCCH format to use based on the specific UCI content, payload size, and channel conditions. This dynamic adaptation enables the system to optimize performance for different transmission scenarios rather than being locked into a fixed format.
2Quantity of substance
If a new PUCCH format X is introduced to transmit UCI exceeding 22 bits, then the UCI payload capacity is improved, but the device complexity increases
Solution Approach 1:
The new PUCCH format X is designed to be a universal format that can handle multiple types of UCI (HARQ-ACK, P-CSI, A-CSI) with varying payload sizes. By creating a single multi-functional format rather than multiple specialized formats, the patent reduces the overall complexity compared to having separate formats for each UCI type and payload size.
Solution Approach 2:
The patent utilizes parameter changes in the PUCCH format configuration to manage complexity. Instead of creating entirely new transmission mechanisms, the system adjusts parameters such as resource allocation, modulation schemes, and power control settings to accommodate the extended payload capacity of format X, thereby managing complexity through configuration rather than structural complexity.
3Adaptability or versatility
If multiple UCI types are transmitted simultaneously on PUCCH, then the adaptability is improved, but the power control becomes more difficult
Solution Approach 1:
The patent applies preliminary action by pre-configuring power control parameters for different UCI combinations and payload sizes before transmission occurs. The eNodeB prepares appropriate power settings in advance based on the configured UCI types and their expected impact, allowing the UE to execute power control without complex real-time calculations during the actual transmission.
Data Source
AI summary
Embodiments of the present disclosure provide a method for transmitting uplink control information. The method includes: a User Equipment (UE) receives Uplink Control Information UCI configuration information, wherein the UCI configuration information includes information for determining a periodicity, an offset and a Physical Uplink Control Channel PUCCH for Periodic-Channel State Information P-CSI to be report in one subframe and configuration information for transmission of Hybrid Automatic Retransmission reQuest-Acknowledgement HARQ-ACK; processes one or more kinds of UCI in the subframe, and transmits the on resources using a PUCCH format. According to the method of the present disclosure, the transmit power for transmitting the UCI on the channel using the PUCCH format is optimized. During the transmission of the P-CSI, the PUCCH resource most preferable for the transmission of the P-CSI is determined. The uplink resource utilization ratio is increased.