Dual-Sim UE Radio Resource Timer for Message Transmission
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Solution Overview
Problem
In multi-SIM user equipment (UE) devices, non-call subscriptions are unable to access the shared radio resource during a call on another subscription, leading to delays in message transmission and inefficient use of network resources.
Innovation Solution
Implementing a timer-based system that prioritizes access to the shared radio resource for non-call subscriptions, allowing messages to be transmitted during call inactivity gaps or upon timer expiration, ensuring timely delivery of pending messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single radio resource is shared between multiple subscriptions with priority access given to the subscription conducting a call, then call quality is maintained, but non-call subscriptions experience delays in message transmission
Solution Approach 1:
The patent implements periodic monitoring of timer expiration and call status to dynamically determine when non-call subscriptions can access the shared radio resource. The system periodically checks whether the timer has expired and whether the call is still active, allowing message transmission during call inactivity gaps or upon timer expiration, thus resolving the contradiction between maintaining call quality and enabling timely message transmission for non-call subscriptions
Solution Approach 2:
The system uses feedback from timer expiration status and call activity monitoring to dynamically adjust radio resource access permissions. When the timer expires or call inactivity is detected, the system feedback signals allow non-call subscriptions to access the radio resource, while during active calls, priority is maintained for call subscriptions, thus balancing both requirements
2Reliability
If the shared radio resource is exclusively allocated to the subscription conducting a call, then call performance is optimized, but network resource utilization efficiency decreases
Solution Approach 1:
The patent implements dynamic radio resource allocation where access permissions for non-call subscriptions change based on real-time call status and timer expiration. The system transitions from exclusive allocation during active calls to shared allocation during call inactivity or timer expiration, optimizing both call performance and overall network resource utilization efficiency through adaptive resource management
Solution Approach 2:
The system starts a timer when a signaling message is received at the transmission buffer for a non-call subscription during a call. This preliminary action prepares the system to grant access to non-call subscriptions in advance when the timer expires or during call inactivity gaps, ensuring that network resources are utilized efficiently without compromising current call performance
3Stability of the object's composition
If access to the shared radio resource is restricted during a call, then call stability is maintained, but message transmission for non-call subscriptions is delayed
Solution Approach 1:
The system periodically monitors call activity and timer expiration status to determine appropriate access permissions. During stable call periods, access is restricted to maintain call stability. During call inactivity gaps or upon timer expiration, access is granted to non-call subscriptions, thus maintaining call stability while improving message transmission efficiency through periodic resource sharing
Solution Approach 2:
The timer acts as an intermediary mechanism that mediates between call stability requirements and message transmission efficiency. The timer's expiration status serves as a signal to temporarily relax access restrictions without directly impacting active call stability, allowing non-call subscriptions to transmit messages during permissible time windows while maintaining overall system stability
Data Source
AI summary
Methods and apparatuses are presented controlling access to a radio resource of a multi-subscriber identity module (SIM) user equipment (UE). For example, an example method is presented that includes initiating a call on a first subscription of the UE, and generating, during the call, a message for transmission to a network entity associated with a second subscription of the UE. Additionally, the example method may include starting a timer upon receiving the message at a transmission buffer of the UE. Moreover, the example method may include determining, upon expiration of the timer, that the message is pending transmission at the transmission buffer to the network entity, and transmitting the response based at least in part on determining that the message is pending transmission upon expiration of the timer. Responses may also be transmitted during inactivity gaps in the call.