Inactive Terminal Uplink Data Processing via DRB Reset
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Solution Overview
Problem
In the context of 3GPP New Radio (NR) technology, terminals in an inactive state cannot directly send uplink data, leading to service delays.
Innovation Solution
A communication method that involves receiving a message from an access network device to release or suspend a dedicated signaling radio bearer (SRB) and reset protocol entities corresponding to a data radio bearer (DRB), allowing terminals to process uplink data directly on the reset DRB, thereby reducing service delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal enters an inactive state to save power and reduce complexity, then power consumption and device complexity are reduced, but the terminal cannot directly send uplink data causing service delay
Solution Approach 1:
The terminal performs preliminary actions by retaining and resetting the DRB and its protocol entities before actually needing to send uplink data. This allows the terminal to quickly transition from inactive to active data transmission state without full re-establishment of radio bearers, thereby reducing service delay while maintaining the power-saving benefits of the inactive state
2Loss of time
If the terminal retains all protocol entities in inactive state to enable direct uplink data sending, then service delay is reduced, but power consumption increases
Solution Approach 1:
The invention extracts only the necessary protocol entities (DRB and its associated entities) from the complete set of radio bearers that would need to be maintained. By selectively retaining only the data radio bearer components needed for uplink data transmission while releasing signaling radio bearers, the terminal achieves the ability to send uplink data directly without maintaining all protocol entities, thus balancing service delay reduction with power consumption management
3Use of energy by moving object
If the terminal releases all radio bearers in inactive state to save power, then power consumption is reduced, but the terminal cannot process uplink data directly causing service delay
Solution Approach 1:
The terminal performs preliminary actions by resetting the DRB and its protocol entities in advance while in the inactive state. This preliminary preparation ensures that when uplink data needs to be sent, the data transmission path is already configured and ready, eliminating the need for time-consuming re-establishment procedures and reducing service delay while maintaining power-saving operation
Data Source
AI summary
This application relates to the field of communications technologies, and discloses a communication method and a communication apparatus, to reduce service delay due to uplink data cannot be directly sent by a terminal when the terminal is in an inactive state. The method in this application includes: receiving a first message from a first access network device; then releasing or suspending a configured dedicated signaling radio bearer SRB and resetting protocol entities corresponding to a configured data radio bearer DRB. The first message is used to indicate to a terminal to enter a radio resource control (RRC) inactive state, and the first message carries an identifier of the terminal in the radio resource control (RRC) inactive state and radio access network notification area (RNA) information.