Multi-Carrier Uplink Transmission State Switching for Consistent Processing
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Solution Overview
Problem
In carrier aggregation (CA) or eNB-NR dual connectivity (EN-DC) scenarios, terminals with limited uplink radio frequency links or transmit antennas experience state switching delays, leading to processing inconsistencies between the serving node and the terminal, affecting communication reliability and efficiency.
Innovation Solution
A method and device that determine a sending mechanism for uplink transmissions based on predefined uplink transmit modes, ensuring consistent processing by configuring uplink transmit resources and maintaining alignment between the terminal and serving node, thereby reducing state switching delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal switches state to allocate uplink radio frequency links or transmit antennas to different carriers, then the uplink transmission capability on multiple carriers is improved, but the processing delay increases and processing consistency between terminal and serving node deteriorates
Solution Approach 1:
The patent implements dynamic state switching mechanisms where the terminal can flexibly transition between different uplink transmission states (first state with all resources on one carrier, second state with resources distributed across carriers). The network device configures and triggers state switching through signaling, enabling the system to adapt resource allocation dynamically based on transmission needs while managing the switching process to minimize delay impact.
Solution Approach 2:
The network device performs preliminary configuration of uplink state information and switching parameters before actual state transitions occur. By pre-configuring the possible states and switching conditions, the terminal is prepared in advance for state changes, reducing the processing delay associated with unexpected or ad-hoc state switching.
2Adaptability or versatility
If the terminal switches state to allocate uplink radio frequency links or transmit antennas to different carriers, then the uplink transmission capability on multiple carriers is improved, but the processing consistency between terminal and serving node deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where the terminal reports its current uplink state and switching status to the network device. The network device uses this feedback to maintain consistent processing by adjusting its scheduling and resource allocation decisions based on the terminal's actual state, ensuring both terminal and network device operate with consistent understanding of the uplink configuration.
Solution Approach 2:
The network device acts as an intermediary that coordinates and manages the state switching process. It receives switching requests, determines appropriate state transitions, configures the terminal accordingly, and maintains the master copy of uplink state information. This intermediary role ensures processing consistency by centralizing the control and knowledge of state configurations.
3Productivity
If the terminal uses all uplink radio frequency links or transmit antennas on one carrier, then the transmission efficiency on that carrier is improved, but the adaptability to multiple carriers deteriorates
Solution Approach 1:
The patent implements dynamic state switching mechanisms where the terminal can flexibly transition between different uplink transmission states (first state with all resources on one carrier, second state with resources distributed across carriers). The network device configures and triggers state switching through signaling, enabling the system to adapt resource allocation dynamically based on transmission needs while managing the switching process to minimize delay impact.
Data Source
AI summary
Provided are an uplink transmission sending method and device, an uplink transmission receiving method and device, a terminal, a service node, and a medium. The method includes: determining a sending mechanism of an uplink transmission according to an uplink transmit mode in the case of multiple carriers; and sending the uplink transmission according to the sending mechanism.