Wireless Device Paging Handling with Release Timer
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Solution Overview
Problem
In wireless communication systems, particularly in multi-universal subscriber identity module (MUSIM) operations, there is a challenge in handling paging messages effectively without causing data interruptions or unnecessary resource wastage when a user equipment (UE) needs to switch between multiple networks.
Innovation Solution
The proposed solution involves a method where a wireless device registers to multiple networks, establishes a connection with one network, receives a release timer from that network, and upon receiving a paging message from another network, starts a release timer. Once the timer expires, the device releases the connection with the first network without an RRC release message and establishes a connection with the second network based on the paging message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the UE immediately switches to the second network upon receiving a paging message, then the response time to incoming data is improved, but data transmission on the first network is interrupted
Solution Approach 1:
The UE performs preliminary actions by starting a release timer upon receiving the paging message while maintaining the connection with the first network. This allows the UE to prepare for the network switch in advance without immediately interrupting ongoing data transmission, thus resolving the contradiction between quick response and continuous data transfer.
2Speed
If the UE releases the connection with the first network immediately upon receiving a paging message, then the transition to the second network is faster, but resource wastage occurs due to abrupt connection termination
Solution Approach 1:
The UE starts a release timer upon receiving the paging message, which provides a predetermined period before the connection is released. This preliminary action allows the UE to switch networks faster while avoiding resource wastage by ensuring that ongoing data transmissions are allowed to complete or are properly handled before the connection is terminated.
Solution Approach 2:
The connection state is made dynamic through the introduction of a release timer. Instead of an immediate static switch, the connection transitions through a timed intermediate state, allowing the system to adapt between speed of switching and efficiency of resource usage based on the timer's expiration.
3Productivity
If the UE maintains connection with the first network while monitoring paging from the second network, then data transmission continuity is improved, but device complexity increases
Solution Approach 1:
The UE is pre-configured with a release timer value by the first network, which simplifies the multi-network management complexity. Upon receiving the paging message, the UE only needs to start the pre-configured timer rather than managing complex timing logic, thus maintaining data transmission continuity while keeping device complexity manageable.
Data Source
AI summary
The present disclosure relates to a paging handling in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: registering to a first network and a second network; establishing a connection with the first network; receiving, from the first network, information for a release timer; starting the release timer after receiving a paging from the second network; and upon an expiry of the release timer: releasing the connection with the first network without receiving a radio resource control (RRC) release message from the first network; and establishing a connection with the second network based on the paging from the second network.