Wireless Communication Method for URLLC Resource Allocation
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Solution Overview
Problem
In current new radio (NR) systems, the ultra-reliable low latency communication (URLLC) service faces resource wastage due to semi-persistent resource configuration, where actual resource occupation does not match the demand, leading to inefficient use of resources.
Innovation Solution
A wireless communication method where a terminal device sends indication information to a network device to indicate the presence or absence of uplink data, allowing the network device to coordinate resources effectively and avoid reserving resources unnecessarily, thereby preventing waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semi-persistent resource configuration is used for URLLC service, then resource allocation is simplified and setup time is reduced, but resource waste occurs because actual resource occupation does not match demand
Solution Approach 1:
The patent applies dynamics by transitioning from static semi-persistent resource configuration to dynamic resource indication. The terminal device sends indication information to dynamically signal whether uplink data exists in future time domains, allowing the network device to adapt resource allocation in real-time based on actual data presence, thereby resolving the contradiction between allocation simplicity and resource waste.
Solution Approach 2:
The patent implements feedback mechanism where the terminal device provides information about its uplink data status to the network device through indication information. This feedback loop enables the network device to adjust resource reservations based on actual terminal needs, preventing resource waste while maintaining efficient allocation for URLLC services.
2Device complexity
If resources are semi-statically configured, then configuration complexity is reduced, but resource utilization becomes inefficient due to mismatch between allocation and actual demand
Solution Approach 1:
The patent applies partial action by having the terminal device send indication information only when necessary (when uplink data is or is not present in future time domains). This partial signaling approach maintains low configuration complexity while significantly improving resource utilization efficiency, as the network device can adjust reservations based on these selective indications rather than relying on static semi-persistent configuration.
3Reliability
If pre-configured resources are reserved for potential uplink data, then transmission reliability is improved, but resource waste increases when data is not present
Solution Approach 1:
The patent uses feedback to resolve the contradiction between reliability and resource occupation. The terminal device provides feedback through indication information about the actual presence of uplink data, allowing the network device to maintain resource reservations only when needed. This ensures transmission reliability for actual data while preventing resource waste when no data is present.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the resource reservation state based on indication information. The network device changes the reservation parameter from reserved to unreserved depending on whether the terminal device has uplink data in future time domains, thereby maintaining reliability when needed while reducing resource occupation when not needed.
Data Source
AI summary
Provided by the embodiments of the present application are a wireless communication method and device, which may prevent resource waste. The method comprises: a terminal device sending indication information to a network device, the indication information being used to indicate that there is uplink data in the time domain after the indication information; and after sending the indication information in the time domain, the terminal device sending the uplink data to the network devices.