Uplink Transmission Resource Indication for Grant-Free Preemption
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Solution Overview
Problem
In wireless communication networks, uplink services with different priorities face challenges in resource preemption and multiplexing, leading to low communication efficiency and reliability due to the lack of effective signaling for grant-free transmissions.
Innovation Solution
A method and apparatus that utilize downlink control information to indicate resources, allowing for power control and rate matching mechanisms to manage overlapping resources, ensuring high-priority uplink transmissions are maintained with improved efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If grant-free transmission is used for uplink services, then transmission flexibility and speed are improved, but resource preemption control and reliability deteriorate
Solution Approach 1:
The patent introduces DCI format 2,2 as an intermediary signaling mechanism that mediates between grant-free transmission flexibility and resource preemption control. This intermediary carries resource indication information that enables the network to notify users of preemption while maintaining the autonomous transmission characteristics of grant-free mode.
Solution Approach 2:
The patent implements preliminary action by sending resource indication information via DCI format 2,2 before actual resource preemption occurs. This allows users to be notified in advance of upcoming preemption events, enabling them to adjust their transmission plans accordingly while maintaining the speed benefits of grant-free transmission.
2Productivity
If resource preemption is implemented for high-priority services, then service priority handling is improved, but communication efficiency and reliability deteriorate due to lack of signaling
Solution Approach 1:
The patent implements feedback mechanisms through DCI format 2,2 that provide real-time information about resource preemption to users. This feedback loop enables the network to maintain control over resource allocation while allowing grant-free transmission to operate efficiently, thus improving both service priority handling and communication reliability.
Solution Approach 2:
DCI format 2,2 serves as an intermediary signaling channel that bridges the gap between network-controlled resource management and autonomous grant-free transmission. It carries resource indication information that enables coordinated operation between prioritized services and efficient resource utilization.
3Loss of information
If DCI format 2,2 with resource indication domain is used, then resource indication capability is improved, but downlink control information overhead increases
Solution Approach 1:
The patent applies local quality by making the resource indication domain in DCI format 2,2 configurable and adaptable. Different users or user groups can be assigned different levels of resource indication detail based on their specific needs, allowing the system to provide necessary information while minimizing overall overhead through selective application.
Data Source
AI summary
Provided are an uplink transmission method and apparatus, a resource indication method and apparatus, a serving node, and a medium. The method includes the following, downlink control information is received, where the downlink control information includes a resource indication domain; and an uplink transmission mechanism is determined according to an indication resource indicated by the resource indication domain.