NR Data Transmission Resource Conflict Resolution
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Solution Overview
Problem
In New Radio (NR) systems, there is a challenge in transmitting data when the data transmission direction in a slot is opposite to what is configured by other signaling, or when there is a resource overlap, affecting multi-slot dynamic scheduling.
Innovation Solution
The method involves sending first and third configuration signaling to determine resources occupied by data in a slot, and when there is a resource overlap, determining data transmission based on a preset policy, considering different types of configuration signaling such as DCI, UE-specific RRC signaling, and cell-specific RRC signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-slot dynamic scheduling signaling is used to schedule data transmission in multiple slots, then scheduling efficiency is improved, but resource conflicts occur when transmission directions conflict or resources overlap
Solution Approach 1:
The patent applies preliminary action by determining the transmission direction of each symbol in advance through configuration signaling (RRC signaling or group common PDCCH) before actual data transmission occurs. This pre-configuration allows the terminal to know the expected transmission direction for each symbol ahead of time, enabling it to detect and handle conflicts with dynamically scheduled transmissions before they cause errors, thus resolving the contradiction between scheduling efficiency and resource allocation accuracy
Solution Approach 2:
The patent implements feedback by having the terminal detect conflicts between pre-configured transmission directions and dynamically scheduled transmission directions, then feed back this conflict information to the network side. The network side receives this feedback and determines whether to send data in the current slot based on the conflict detection results, ensuring reliable resource allocation while maintaining multi-slot scheduling efficiency
2Adaptability or versatility
If flexible symbols are rewritten by signaling for DL or UL transmission, then system adaptability is improved, but transmission direction conflicts arise with other signaling configurations
Solution Approach 1:
The patent applies preliminary action by pre-configuring the transmission directions of flexible symbols through RRC signaling or group common PDCCH before dynamic scheduling occurs. This advance configuration establishes a baseline transmission direction for each flexible symbol, allowing the system to maintain flexibility while providing a reference framework that simplifies conflict detection and resolution with dynamically scheduled transmissions
Solution Approach 2:
The patent uses the pre-configured transmission direction information as an intermediary between the flexible symbol rewriting mechanism and the dynamic scheduling mechanism. This intermediary layer allows the system to coordinate between different signaling types (RRC, group common PDCCH, and UE-specific PDCCH) by providing a reference framework that mediates potential conflicts, reducing the overall coordination complexity
3Productivity
If DCI schedules data in N slots including the first slot, then multi-slot resource utilization is improved, but conflicts occur with other configuration signaling in the same slot
Solution Approach 1:
The patent applies preliminary action by determining the transmission direction of each symbol in advance through configuration signaling before DCI-based multi-slot scheduling occurs. This pre-establishment of transmission directions allows the system to identify potential conflicts between DCI-scheduled resources and other configuration signaling (UE-specific or cell-specific RRC signaling) before data transmission, ensuring precise resource allocation while maintaining high resource utilization
Solution Approach 2:
The patent implements feedback by having the terminal detect conflicts between DCI-scheduled transmission directions and pre-configured transmission directions, then feed back this conflict information to the network side. The network side uses this feedback to determine whether to proceed with data transmission in slots where conflicts are detected, ensuring precise resource allocation while maintaining efficient multi-slot resource utilization
Data Source
AI summary
Embodiments of the disclosure provide a method for transmitting data in a wireless communication network. A network device sends first configuration signaling to a terminal. The first configuration signaling is used to determine a first resource occupied by first data in a first slot. The network device also sends third configuration signaling to the terminal. The third configuration signaling is used to determine a second resource occupied by second data in the first slot and the third configuration signaling has a different type of configuration signaling from the first configuration signaling. When at least one time domain symbol in the second resource is located in the first resource in the first slot, the network device further determines, based on a preset policy, data transmitted in the first slot.