RRC Inactive Uplink Transmission Using Preconfigured PUSCH
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in uplink transmission during the RRC_INACTIVE state, leading to excessive overhead when transitioning to RRC_CONNECTED for data transmission, which can reduce network efficiency.
Innovation Solution
A method and apparatus for uplink transmission in RRC_INACTIVE state using a power offset and RNTI, enabling data transmission and reception without transitioning to RRC_CONNECTED through a second resume procedure, specifically configured for SRB2 and SRB4 radio bearers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal transitions to RRC_CONNECTED state for uplink data transmission, then the data can be transmitted reliably, but the overhead and complexity of state transition increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring uplink transmission parameters (power offset, RNTI, PUSCH resources) in the RRC_INACTIVE state before data transmission is needed. This allows the terminal to perform uplink transmission without transitioning to RRC_CONNECTED, thus reducing state transition overhead while maintaining transmission reliability through pre-established configuration
Solution Approach 2:
The terminal uses self-service by autonomously performing uplink transmission in RRC_INACTIVE state using pre-configured parameters from the RRCRelease message. The terminal independently manages power offset application and RNTI-based transmission without requiring network intervention or state transition, reducing overall system complexity
2Device complexity
If the terminal remains in RRC_INACTIVE state for uplink transmission, then the overhead is reduced, but the transmission capability is limited
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting uplink transmission parameters (power offset, RNTI, PUSCH resources) based on the terminal's data transmission needs while remaining in RRC_INACTIVE state. This enables enhanced transmission capability within the inactive state without requiring full connection establishment, thus improving productivity while maintaining low overhead
Data Source
AI summary
A method and apparatus for uplink transmission in RRC_CONNECTED state and in RRC_INACTIVE state is provided. A method and apparatus for uplink transmission in RRC_CONNECTED state and in RRC_INACTIVE state includes receiving configuration information in RRCRelease, performing a PUSCH transmission in RRC_INACTIVE based on a power offset and a RNTI indicated in the RRCRelease.