Long PUCCH Dynamic Control for 5G NR TDD
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Solution Overview
Problem
Current 5G NR communication technologies lack customization for long physical uplink control channel (PUCCH) transmissions, particularly in dynamic time division duplexing scenarios, leading to inefficiencies in slot utilization and control bit transmission.
Innovation Solution
The method involves determining the grant type and slot type for PUCCH transmissions, with options for periodic or aperiodic grants, and flexible or fixed slots, allowing for dynamic control of PUCCH parameters such as symbol allocation and triggering signals to optimize PUCCH transmissions based on available resources and network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current PUCCH solutions are used in 5G NR, then basic control channel transmission is supported, but customization for PUCCH transmissions in dynamic TDD scenarios is not provided
Solution Approach 1:
The patent implements dynamic PUCCH transmission by introducing multiple grant types (periodic and aperiodic) and slot types (fixed UL and flexible UL/DL) that can be dynamically selected based on network conditions. The UE determines the appropriate grant type and slot type dynamically, allowing the system to adapt to varying TDD configurations without requiring a completely new system architecture.
Solution Approach 2:
The patent changes key parameters including grant type (periodic/aperiodic), slot type (fixed/flexible), PUCCH format, and triggering signal presence to enable customization. These parameter variations allow the same basic PUCCH mechanism to serve multiple customization needs in dynamic TDD scenarios without increasing fundamental system complexity.
2Productivity
If dynamic control of PUCCH parameters is implemented, then transmission efficiency is improved, but determination complexity increases
Solution Approach 1:
The patent segments the PUCCH transmission control into distinct determination steps: first determining grant type (periodic or aperiodic), then determining slot type (fixed UL or flexible UL/DL), and finally selecting PUCCH format and triggering signals. This segmentation of the determination process makes the complex control mechanism more manageable and implementable.
3Quantity of substance
If long PUCCH transmissions are supported with dynamic slot aggregation, then control bit transmission capacity increases, but slot utilization complexity increases
Solution Approach 1:
The patent merges multiple TDD slots into a single aggregated slot for long PUCCH transmission. By combining available UL slots (whether fixed or flexible types) into one transmission opportunity, the system increases control bit capacity while managing slot utilization complexity through a unified aggregation mechanism rather than handling each slot independently.
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AI summary
Techniques for dynamically controlling long physical uplink control channel (PUCCH) transmission are described. In an aspect, the disclosure describes a method for receiving a grant to transmit a long PUCCH, determining a grant type of the grant, wherein the grant type is one of a periodic grant or an aperiodic grant, determining a slot type of the slot to transmit the long PUCCH, and transmitting the long PUCCH over one or more slots based on the grant, the determined slot type, and the determined grant type. In another aspect, the disclosure describes a method for generating a triggering signal to transmit to a user equipment (UE), the triggering signal indicating to the UE to transmit a PUCCH, transmitting the triggering signal to the UE, and receiving the long PUCCH in response to the triggering signal.