Configured Grant Uplink Selection for Reliable Resource Use
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Solution Overview
Problem
Existing mobile communication systems face challenges in balancing reliability and resource utilization in configured grant scheduling, leading to inefficiencies and high latency in uplink data transmission.
Innovation Solution
A communication method that allows a terminal device to select and notify a network device of target configuration information from a set, enabling the network device to release unused resources and adapt to changing channel conditions, thereby optimizing resource utilization and reducing signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If configured grant scheduling uses same transmission information in long period, then resource utilization is improved, but reliability deteriorates due to inability to adapt to channel changes
Solution Approach 1:
The patent implements dynamic adaptation by allowing the terminal device to select from multiple configuration information sets based on current channel conditions and service requirements. The network device can update and reconfigure transmission parameters dynamically, transforming the static configured grant scheduling into a dynamic system that adapts to changing conditions while maintaining resource efficiency.
Solution Approach 2:
The patent enables parameter changes by providing multiple configuration information sets with different transmission parameters (time-frequency resources, MCS, periodicity). The terminal device selects appropriate parameters based on channel quality and service demands, allowing the system to adjust transmission characteristics dynamically without requiring complete reconfiguration, thus balancing reliability and resource utilization.
2Reliability
If dynamic scheduling uses handshake procedure before data transmission, then reliability is improved, but latency increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple transmission parameter sets in advance through RRC signaling. The terminal device can directly select and use the appropriate pre-configured parameters when data needs to be transmitted, eliminating the need for real-time handshake and UL grant procedures. This preliminary configuration approach maintains reliability through proper parameter selection while significantly reducing transmission latency.
Solution Approach 2:
The terminal device performs self-service by autonomously selecting the most appropriate configuration information from the pre-configured sets based on current channel conditions and service requirements. This self-selection mechanism eliminates dependency on network device intervention for each transmission, reducing signaling overhead and latency while maintaining reliable transmission through intelligent parameter choice.
3Speed
If configured grant scheduling is used to reduce latency, then transmission speed is improved, but resource utilization deteriorates due to inability to release unused resources
Solution Approach 1:
The patent implements discarding and recovering by enabling the terminal device to discard unused configuration information sets and recover/release the associated resources back to the network device. When certain configuration sets are no longer needed or when channel conditions change, the terminal can indicate to the network device which configurations to release, allowing the network to reallocate those resources to other users or purposes, thus improving overall resource utilization while maintaining fast transmission capability.
Solution Approach 2:
The patent introduces feedback mechanisms where the terminal device reports to the network device about its actual usage of configured grant resources and the suitability of different configuration sets. This feedback enables the network device to make informed decisions about resource allocation and configuration updates, optimizing resource utilization based on actual transmission needs while maintaining the low-latency benefits of configured grant scheduling.
Data Source
AI summary
A communication method includes receiving a configuration information set from a network device, selecting target configuration information from the configuration information set, sending first information to the network device, and sending uplink data to the network device based on the target configuration information. The first information is useable to indicate at least one of the target configuration information or configuration information other than the target configuration information in the configuration information set.