RRC Connection Release Logic for Sidelink Inactive Timer States
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Solution Overview
Problem
The existing methods for releasing Radio Resource Control (RRC) connections in wireless communication systems, particularly when Sidelink data transmission is ongoing, lead to repeated establishment and release of RRC connections due to inactive timers expiring, causing inefficiencies and resource wastage.
Innovation Solution
The method involves determining the states of both the inactive timer and the Sidelink inactive timer to decide whether to release the RRC connection, with the option to restart or configure these timers based on Sidelink logical channel and Quality of Service (QoS) indications, ensuring the RRC connection remains active during Sidelink data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inactive timer is used to release RRC connection, then the UE can automatically release the connection when overtime, but the RRC connection may be released during ongoing Sidelink data transmission
Solution Approach 1:
The patent introduces a dynamic timer mechanism where the Sidelink inactive timer is selectively applied based on Sidelink service types. For broadcast and groupcast services, the Sidelink inactive timer extends the RRC connection retention period beyond the default inactive timer, dynamically adapting the connection duration to match the specific requirements of different Sidelink transmission modes and preventing premature connection release during ongoing Sidelink data transmission.
2Loss of energy
If the RRC connection is released when inactive timer expires, then resource wastage is avoided, but repeated establishment and release of RRC connections occurs during Sidelink transmission
Solution Approach 1:
The patent modifies the timer parameter configuration by introducing a Sidelink inactive timer with different duration settings based on Sidelink service types. For broadcast and groupcast services, the timer is extended to prevent premature expiration during Sidelink transmission, while for unicast services the default inactive timer is used. This parameter adjustment optimizes the balance between energy efficiency and connection stability, avoiding unnecessary connection releases and re-establishments.
3Productivity
If the RRC connection is maintained during Sidelink transmission, then transmission continuity is ensured, but resource usage increases
Solution Approach 1:
The patent applies differentiated timer configurations for different Sidelink service types and logical channels. The Sidelink inactive timer is selectively applied only to broadcast and groupcast services where continuous connection is critical, while unicast services use the default inactive timer. This localized quality adjustment ensures transmission continuity where needed while avoiding unnecessary energy consumption for services that can tolerate connection releases.
Data Source
AI summary
An information processing method includes: determining the state of an inactive timer; determining the state of a sidelink inactive timer; and determining, according to the state of the inactive timer and the state of the sidelink inactive timer, whether to release an RRC connection.