Non-Connected UE Data Transmission Without Random Access
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Solution Overview
Problem
In mobile communication systems, User Equipment (UE) in a non-connected state experiences significant transmission delays as it needs to switch to a connected state for data reception, which is inefficient and time-consuming.
Innovation Solution
A data transmission method for UE in a non-connected state, involving obtaining indication information from a network device to trigger a non-connected state data transmission procedure, allowing direct data transmission without entering a connected state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE switches to connected state to receive downlink data, then data transmission reliability is improved, but transmission delay increases
Solution Approach 1:
The network device pre-allocates dedicated time-frequency resources for downlink data transmission to the UE in non-connected state before the UE actually needs to receive data. This preliminary resource allocation eliminates the need for random access procedures and connection establishment, allowing the UE to receive data immediately while maintaining reliable transmission through dedicated resources.
Solution Approach 2:
The patent introduces dynamic resource allocation mechanisms where the network device can flexibly allocate and reconfigure time-frequency resources based on real-time traffic conditions and UE states. This includes dynamic switching between connected-state and non-connected-state resource pools, and adaptive adjustment of resource allocation patterns to optimize both reliability and latency.
2Stability of the object's composition
If UE completes connection procedure before receiving data, then connection stability is improved, but transmission efficiency deteriorates
Solution Approach 1:
The patent segments the resource pool into multiple types including connected-state resources and non-connected-state resources. This segmentation allows the system to handle different traffic scenarios appropriately: using non-connected-state segmented resources for low-latency applications while maintaining connected-state resources for stable, high-reliability transmissions, thereby improving overall transmission efficiency without sacrificing connection stability when needed.
3Adaptability or versatility
If UE performs random access procedure to enter connected state, then data transmission capability is improved, but procedure complexity increases
Solution Approach 1:
The patent creates a universal resource allocation framework where the same time-frequency resources can serve multiple purposes: dedicated downlink data transmission to non-connected UEs, uplink grant-free transmission, and fallback to connected-state procedures if needed. This multi-functionality reduces procedure complexity by eliminating the need for separate random access procedures while maintaining adaptable data transmission capability across different scenarios.
Data Source
AI summary
A data transmission method in a wireless communication system is executed by UE in a non-connected state, and the method includes: obtaining indication information sent by a network device, wherein the indication information is used to indicate the UE in the non-connected state to perform data transmission; and triggering a non-connected state data transmission procedure to perform data transmission.