Paging Response PUSCH Preconfiguration for Low-Latency Small Data
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Solution Overview
Problem
In 5th generation mobile communication systems, establishing or resuming an RRC connection for small data volumes is resource-intensive, leading to low data transmission efficiency.
Innovation Solution
A communication method where a terminal device determines a first PUSCH resource for transmitting a paging response based on preconfiguration and/or a paging message, reducing the need for additional signaling and enabling immediate transmission of identity authentication information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the access network device sends indication information of the first PUSCH resource to the terminal device after sending the paging message, then the terminal device can transmit the paging response, but the transmission latency is increased due to the additional signaling overhead
Solution Approach 1:
The first PUSCH resource is preconfigured for the terminal device before the paging message is sent. This preliminary configuration eliminates the need for additional indication information to be transmitted after paging, thereby reducing both signaling overhead and transmission latency while enabling immediate paging response transmission.
2Productivity
If the terminal device is in RRC idle state or inactive state, then power consumption is reduced, but data transmission efficiency deteriorates due to the need for RRC connection setup or resumption
Solution Approach 1:
The terminal device preconfigures the first PUSCH resource in advance while in RRC idle or inactive state. When a paging message arrives, the terminal can immediately transmit the paging response using the preconfigured resource without needing to establish or resume an RRC connection, thereby improving data transmission efficiency while maintaining low power consumption.
Solution Approach 2:
The terminal device autonomously uses the preconfigured first PUSCH resource to transmit the paging response without requiring network device coordination or additional signaling. This self-service capability enables efficient data transmission while the terminal remains in a low-power state.
Data Source
AI summary
A communication method and an apparatus are provided, to resolve a problem of low data transmission efficiency. The method includes: in response to receiving a paging message from a terminal device, a terminal device determines, based on a preconfiguration and/or the paging message, a first physical uplink shared channel (PUSCH) resource used to transmit a paging response, and sends the paging response to the access network device on the first PUSCH resource, where the paging response carries identity authentication information of the terminal device. After the access network device or a core network successfully performs identity authentication on the terminal device, downlink data transmission can be performed. Compared with a manner in which downlink data transmission can be performed only after a radio resource control (RRC) connection is set up or resumed, this manner can improve data transmission efficiency.