Paging Response PUSCH Allocation 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 this increases signaling overheads and transmission latency
Solution Approach 1:
The first PUSCH resource is preconfigured in the terminal device before the paging message is received. This preliminary configuration eliminates the need for additional signaling after paging, allowing the terminal device to immediately transmit the paging response on the preconfigured resource, thereby reducing both signaling overheads and transmission latency
Solution Approach 2:
The terminal device autonomously determines the first PUSCH resource based on preconfiguration and/or information in the paging message itself, without requiring the access network device to send separate indication information. This self-determination mechanism reduces signaling overheads while enabling timely response transmission
2Use of energy by moving object
If the terminal device is in RRC idle state or inactive state, then power consumption is reduced, but data transmission efficiency decreases due to connection setup requirements
Solution Approach 1:
The terminal device preconfigures the first PUSCH resource while in RRC idle or inactive state. When a paging message is received, the terminal device can immediately transmit the paging response using the preconfigured resource without establishing an RRC connection first, thereby maintaining low power consumption while enabling efficient data transmission
Solution Approach 2:
The invention allows the terminal device to skip the RRC connection setup or resumption procedure by directly transmitting the paging response on the preconfigured first PUSCH resource. This skipping mechanism eliminates unnecessary connection establishment steps, improving data transmission efficiency while keeping the terminal device in idle or inactive 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.