Uplink Resource Determination for Wireless Communication Reliability
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a challenge in determining valid resources for repeated transmission and reception of uplink/downlink signals or data channels, which affects the efficiency of communication between base stations and terminals.
Innovation Solution
A method and apparatus that determine valid resources for repeated transmission and reception by identifying a first uplink transmission resource for initial transmission and, upon cancellation, identifying a second uplink transmission resource based on candidates following the first resource, allowing for effective uplink/downlink transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal repeatedly transmits and receives uplink/downlink signals or data channels, then communication reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The patent segments the repeated transmission resources into distinct types (initial transmission resources and retransmission resources) with different determination methods. Initial transmissions use dynamically granted resources while retransmissions use pre-configured resources, dividing the complex resource allocation into manageable segments that can be handled independently.
Solution Approach 2:
The patent applies preliminary action by pre-configuring retransmission resources in advance through RRC signaling before actual retransmission occurs. This allows the terminal to have ready-made resource allocations for potential retransmissions, eliminating the need for complex real-time resource determination when retransmissions are needed.
2Adaptability or versatility
If dynamic resource allocation is used for repeated transmissions, then communication flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by using different resource allocation strategies for different transmission scenarios: dynamic grants with full flexibility for initial transmissions, and pre-configured resources with less signaling for retransmissions. Each transmission type receives the appropriate level of resource allocation detail based on its specific needs.
Solution Approach 2:
The patent changes the resource allocation parameters between initial transmissions and retransmissions. Initial transmissions use dynamically allocated parameters from DCI, while retransmissions use pre-configured parameters from RRC signaling, allowing the system to adapt the level of parameter detail to the transmission stage.
3Loss of information
If pre-configured resources are used for retransmission, then signaling overhead is reduced, but resource allocation flexibility decreases
Solution Approach 1:
The patent introduces dynamics by allowing the terminal to switch between different resource determination modes based on the transmission stage. The system dynamically selects between using dynamic grants for initial transmissions and pre-configured resources for retransmissions, optimizing the balance between flexibility and signaling overhead for each specific transmission event.
Data Source
AI summary
The present disclosure relates to a method of a terminal in a wireless communication system. The method may include: determining a plurality of temporally sequential uplink transmission resources to repeatedly transmit a transmission block through configured grant-based uplink transmission; identifying a first uplink transmission resource corresponding to first initial transmission for the transmission block from among the determined plurality of uplink transmission resources; when the first initial transmission is cancelled, identifying a second uplink transmission resource corresponding to second initial transmission for the transmission block based on uplink transmission resource candidates following the identified first uplink transmission resource from among the plurality of uplink transmission resources; and performing the second initial transmission through the identified second uplink transmission resource.