Dynamic Override of Persistent Wireless Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Persistent scheduling in wireless communication systems fails to adapt radio resources according to changing channel conditions, leading to increased error rates in uplink and downlink data transmission.
Innovation Solution
Implementing a method that allows for dynamic adjustment of radio resources based on channel conditions, even after initial allocation, by using uplink and downlink scheduling grants to override persistent resource configurations, thereby reducing error rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If persistent scheduling is used to allocate radio resources, then resource allocation efficiency is improved and control signaling overhead is reduced, but the system cannot adapt to changing channel conditions leading to increased error rates
Solution Approach 1:
The patent applies dynamics by enabling the persistent scheduling configuration to be dynamically overridden by dynamic scheduling grants. The UE monitors PDCCH for potential grants that can temporarily modify the persistent resource allocation, allowing the system to adapt to changing channel conditions while maintaining the efficiency benefits of persistent scheduling for normal operations
Solution Approach 2:
The patent implements parameter changes by allowing the radio resource parameters (time/frequency resources, modulation and coding scheme) to be modified through dynamic grants. When channel conditions change, the network can send scheduling grants that override the persistent configuration parameters, thereby adapting to new channel states and reducing error rates
2Adaptability or versatility
If dynamic scheduling is used to allocate radio resources, then adaptability to channel conditions is improved, but control signaling overhead increases and resource allocation efficiency decreases
Solution Approach 1:
The patent applies partial action by using dynamic scheduling grants only when necessary - specifically when the network detects changed channel conditions or when there is new data to transmit. For normal continuous transmission under stable conditions, the system relies on the pre-configured persistent scheduling, thereby reducing control signaling overhead while maintaining adaptability when needed
Data Source
Figure 1~2
Figure 3~5
Figure 6
AI summary
A method of transmitting data in a wireless communication system includes allocating persistent resources, monitoring a control channel according to the persistent resources so as to find a scheduling grant, the scheduling grant comprising information on uplink radio resources and transmitting data using the uplink radio resources by overriding the persistent resources when the scheduling grant on the control channel is found.