Dynamic Tune Away Frequency Adjustment for DSDS Throughput
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Solution Overview
Problem
Dual-SIM, dual-standby devices experience reduced data throughput on an active subscription due to periodic tuning away to receive control data from a second subscription, leading to interruptions in ongoing data sessions.
Innovation Solution
A method to adjust the tune away frequency based on data rate and communication link parameters, increasing the Slot Cycle Index of the second subscription to minimize interruptions and defer non-essential operations, thereby enhancing throughput on the active subscription.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device periodically tunes away to the second subscription to receive control data, then the second subscription can receive essential paging messages and control information, but the data throughput on the first subscription is reduced due to interruptions in ongoing data sessions
Solution Approach 1:
The patent implements dynamic tune away frequency adjustment based on data session status. When a data session is active on the first subscription, the system dynamically reduces the tune away frequency to the second subscription, adapting the radio resource allocation to current traffic conditions and minimizing throughput impact
Solution Approach 2:
The system changes the parameter of tune away frequency dynamically. By monitoring data session activity and adjusting the frequency at which the device tunes away to the second subscription, the system optimizes the balance between receiving control information and maintaining data throughput
2Reliability
If the second subscription holds radio resources for a long period to complete base station registration software processing, then registration can be completed successfully, but the data throughput on the first subscription is further reduced
Solution Approach 1:
The system performs preliminary checks to determine if a data session is active before allowing extended radio resource holding for base station registration. This preliminary assessment prevents registration operations from interfering with ongoing data sessions, thereby maintaining throughput while still enabling necessary registration procedures
3Device complexity
If the device uses a single radio resource for both subscriptions, then device complexity is reduced, but the first subscription experiences throughput reduction due to mandatory tuning away for the second subscription's control data reception
Solution Approach 1:
The patent applies dynamic control to the single radio resource, making it intelligently adaptive to traffic conditions. The system dynamically adjusts when to switch between subscriptions based on active data sessions, transforming a static single-resource architecture into a dynamically optimized system that preserves throughput while maintaining simplicity
Data Source
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AI summary
Aspects of the present disclosure provide methods and apparatuses for improved throughput for network subscriptions in multi-SIM, multi-standby wireless devices by altering a tune away frequency to another network subscription based on throughput level or communication link parameters. For example, the present application provides a method of tune away in a wireless system, which includes initiating a data session via a first subscription in a multi-subscriber identity module, multi-standby user equipment, determining that a data rate associated with the data session is less than a threshold data rate value, establishing a modified tune away frequency based on the determining, and tuning a radio resource away to a second subscription based on the modified tune away frequency. Through such operation, throughput on an active subscription in such user equipment can be dynamically maximized.