Multi-SIM UE Subscription Indication for Network Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multi-SIM user equipment (UE) devices experience disruptions in scheduled communications when they need to periodically tune away from an active network frequency to perform channel measurements or monitor for communications on a different network subscription, leading to missed data transmissions and potential penalization by the network.
Innovation Solution
The UE is configured to transmit a subscription indication to the network, specifying its SIM state as Single-SIM, Dual-SIM-Dual-Standby, or Dual-SIM-Dual-Active, using MAC Control Elements (CEs), allowing the network to adjust scheduling and minimize disruptions during tune-away periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the MSIM UE periodically tunes away to a second network frequency to perform channel measurements or monitor communications, then the UE can maintain both network subscriptions, but the UE misses scheduled communications with the first network
Solution Approach 1:
The UE transmits a subscription indication to the network in advance before tune-away events occur. This preliminary notification allows the network to proactively adjust scheduling decisions, preventing communication disruptions rather than reacting to them after they occur.
Solution Approach 2:
The subscription indication mechanism establishes a feedback loop where the UE continuously informs the network about its multi-SIM state and upcoming tune-away requirements. This feedback enables the network to adapt its scheduling strategy in real-time, maintaining reliable communications despite the UE's periodic frequency switching.
2Productivity
If the MSIM UE operates on a first network frequency with active data transmission, then data communication is maintained, but the UE cannot simultaneously monitor the second network frequency
Solution Approach 1:
By notifying the network in advance about multi-SIM operations and upcoming tune-away events, the UE enables the network to schedule data transmissions during periods when the UE is present on the first network frequency, maximizing data transmission efficiency without compromising multi-network monitoring capability.
Solution Approach 2:
The solution creates a dynamic scheduling arrangement where the network adapts transmission schedules based on the UE's periodic tune-away pattern. This dynamic approach allows the UE to efficiently transmit data on the first network while periodically monitoring the second network, optimizing both productivity and adaptability.
3Reliability
If the UE transmits a subscription indication to the network, then the network can improve scheduling to account for tune-away, but additional signaling overhead is introduced
Solution Approach 1:
The subscription indication is transmitted as a separate, dedicated signaling element that can be independently managed. This extraction allows the network to process the multi-SIM state information without interfering with existing scheduling protocols, minimizing additional overhead while maintaining scheduling reliability.
Data Source
AI summary
A MSIM UE may perform various network operations for each network subscription. However, if the MSIM UE employs subscriptions for different network operators, the UE may need to periodically tune away for an active data transmission. Such tune-away may cause the UE to miss scheduled communications from the network. Aspects of the present invention are directed to a mechanism by which a UE can notify a base station of the MSIM state, and thereby allow the network to improve scheduling for the UE to allow for periodic tune-away by the UE with minimal impact on scheduled communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may by a UE, such as MSIM UE. The apparatus may be configured to determine that the UE is associated with one or more network subscriptions, and transmit a subscription indication to a network device, wherein the subscription indication identifies a subscription state of the UE to the network.