Pre-Configured PUSCH Uplink Access for Low-Latency Idle Terminals
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Solution Overview
Problem
The latency in sending uplink data is high when a terminal is in an idle or inactive state due to the need for a 2-step or 4-step RACH procedure to enable a connected state in communication systems.
Innovation Solution
A method and apparatus for configuring a dedicated uplink resource using a pre-configured physical uplink shared channel (PUSCH) resource, allowing terminals to send uplink data without entering a connected state, thereby reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal performs 2-step or 4-step RACH procedure to enable connected state for sending uplink data, then the terminal can send data in connected state, but the latency in sending uplink data is relatively high
Solution Approach 1:
The patent applies preliminary action by pre-configuring uplink resources (PUR) and maintaining terminal context information in the network device while the terminal is in idle or inactive state. This allows the terminal to directly send uplink data using the pre-configured resources without performing RACH procedure and transitioning to connected state, thereby reducing latency while ensuring transmission reliability through pre-established resource allocation
2Reliability
If a terminal transitions from idle or inactive state to connected state to send uplink data, then data can be sent reliably, but the process takes more time and increases latency
Solution Approach 1:
The patent implements preliminary action by pre-configuring uplink resources and maintaining terminal context information in advance during idle or inactive states. This enables direct data transmission without state transition, improving data sending efficiency while maintaining reliability through pre-established resource allocation and context information
Solution Approach 2:
The patent extracts the essential elements needed for reliable data transmission (uplink resources and terminal context information) and maintains them independently during idle or inactive states. This allows the terminal to send data directly without undergoing the complete state transition process, thereby improving productivity while ensuring reliability through the extracted and maintained critical elements
Data Source
AI summary
A method for processing data sending, a resource configuration method, and a related device are provided. The method for processing data sending includes: receiving a first configuration sent by a network device. The first configuration is a configuration related to transmission of a pre-configured Physical Uplink Shared Channel (PUSCH) resource, and is used to configure a dedicated uplink resource of at least one cell for the terminal. The method further includes sending uplink data based on the dedicated uplink resource of the at least one cell.