UE Resource Configuration Triggering in Cell_PCH State
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Solution Overview
Problem
In mobile communication systems, user equipment (UE) in the Cell_PCH state faces delays in data transmission due to inadequate resource configuration, especially when handling large volumes of uplink traffic, as it must transition to the Cell_FACH state to request and receive suitable resources, leading to inefficiencies and delays in data transmission.
Innovation Solution
A method where the UE sends a MEASUREMENT REPORT message with a traffic volume indication to the network when buffer occupancy or Transport Channel Traffic Volume exceeds a threshold, triggering the network to configure appropriate resources, allowing for immediate resource allocation and reducing the need for state transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE transitions from Cell_PCH state to Cell_FACH state to request resource configuration, then the UE can obtain suitable resources to meet quality of service requirements, but data transmission delay increases
Solution Approach 1:
The network side performs preliminary resource configuration in advance by pre-configuring dedicated physical data channels (EPDCH) and associated transport channels for the UE while the UE is in Cell_PCH state. This preliminary action eliminates the need for state transition and resource configuration delay when the UE needs to transmit uplink data, as resources are already prepared and available immediately.
2Device complexity
If the UE remains in Cell_PCH state with reserved Cell_FACH resources, then resource configuration complexity is reduced, but the resources cannot satisfy quality of service when large volume uplink traffic needs to be transmitted
Solution Approach 1:
The patent implements dynamic resource configuration where the network side can flexibly allocate dedicated physical data channel resources to the UE in Cell_PCH state based on actual traffic requirements. The system dynamically adjusts resource allocation without requiring state transitions, allowing the UE to maintain Cell_PCH state while receiving appropriate resources for varying traffic volumes, thus maintaining both low complexity and high quality of service.
Data Source
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AI summary
A method, apparatus, and system for triggering resource configuration are disclosed. The method includes: if a user equipment (UE) in Cell_Paging Channel (Cell_PCH) state figures out that the total amount of buffer occupancy at the radio link control (RLC) layer or the Transport Channel Traffic Volume is larger than configured threshold, the UE carries an indication in a MEASUREMENT REPORT message and transmit the message to the network side, wherein the indication is used to trigger the network side to configure resources for the UE. With the present invention, the resource configuration is quickly triggered, and the delay of the UE in the data transmission is minimized.