RRC Resume Signaling Using Preconfigured Uplink Resources
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Solution Overview
Problem
In 5G wireless communication, the transition from RRC inactive to connected state involves a lengthy random access procedure for uplink shared channel resource acquisition, leading to power consumption and potential abnormal states in the wireless network device, hindering efficient connection resumption.
Innovation Solution
A method and apparatus that avoid unnecessary random access by determining scheduling request configuration information upon receiving the RRC resume message, allowing direct use of uplink shared channel resources for RLC status reporting and RRC resume complete messages, thereby reducing delays and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE initiates random access to obtain uplink shared channel resources for sending RLC status report during connection resumption, then the UE can send uplink messages, but the waiting delay increases and power consumption increases
Solution Approach 1:
The network device pre-allocates uplink shared channel resources to the UE during the RRC inactive state before connection resumption is needed. When the UE needs to resume connection, it can directly use these pre-configured resources to send RLC status reports and other uplink messages without initiating random access procedures, thereby eliminating the waiting delay while ensuring reliable communication.
2Reliability
If the UE initiates random access to obtain uplink shared channel resources, then the UE can send uplink messages, but power consumption increases
Solution Approach 1:
The network device pre-allocates uplink shared channel resources to the UE during the RRC inactive state before connection resumption is needed. When the UE needs to resume connection, it can directly use these pre-configured resources to send RLC status reports and other uplink messages without initiating random access procedures, thereby eliminating the waiting delay while ensuring reliable communication.
3Ease of operation
If the wireless network device receives additional random access from UE, then the UE can obtain uplink resources, but the network device may enter abnormal state when function is incomplete
Solution Approach 1:
The network device pre-allocates uplink shared channel resources to the UE during the RRC inactive state before connection resumption is needed. When the UE needs to resume connection, it can directly use these pre-configured resources to send RLC status reports and other uplink messages without initiating random access procedures, thereby eliminating the waiting delay while ensuring reliable communication.
4Productivity
If the UE uses pre-configured uplink shared channel resources instead of random access, then connection resumption delay is reduced, but device complexity increases
Solution Approach 1:
The network device automatically manages the pre-allocation and configuration of uplink shared channel resources during the RRC inactive state, and the UE automatically uses these pre-configured resources when resuming connection. This self-service mechanism eliminates the need for complex real-time resource negotiation and random access procedures, simplifying the overall system operation while maintaining high connection resumption speed.
Data Source
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AI summary
This application provides a wireless communication method and apparatus, and a system. For a connection resume scenario, an uplink shared channel resource is obtained by using scheduling request configuration information, to send a radio link control status report and send a radio resource control resume complete message. This can avoid initiating unnecessary random access by a terminal in a connection resume procedure, reduce power consumption of the terminal, reduce a waiting delay, and improve terminal performance, to quickly resume a connection of the terminal.