Dynamic Priority Switching for Dual SIM User Equipment
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Solution Overview
Problem
Existing wireless communication systems struggle to effectively prioritize communications for dual subscriber user equipment (UE), leading to potential link starvation or failure for lower priority services.
Innovation Solution
A method for wireless communication where a user equipment (UE) initiates multiple services associated with different subscriber identity modules (SIMs) and prioritizes them dynamically by switching priorities during service operations, based on factors like service type and HARQ feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single priority scheme is used for dual SIM services, then the high priority service is reliably served, but the low priority service suffers from link starvation or failure
Solution Approach 1:
The patent implements dynamic priority switching between first and second priority schemes based on service type and channel conditions. The network can switch from a first priority scheme (where first SIM services have higher priority) to a second priority scheme (where second SIM services have higher priority) to prevent link starvation and ensure both services receive adequate resources.
Solution Approach 2:
The patent changes the priority parameter allocation dynamically by switching between different priority schemes. The network configures different priority levels for different service types (e.g., voice vs. data) and can switch schemes based on HARQ feedback and service requirements, thereby optimizing both reliability and throughput for different services.
2Productivity
If dynamic priority switching is implemented, then both services receive fair resource allocation, but system complexity increases
Solution Approach 1:
The patent uses HARQ (Hybrid Automatic Repeat Request) feedback from the UE to determine when to switch priority schemes. The network monitors HARQ acknowledgments and switches priority schemes based on this feedback, enabling automated priority management without requiring complex manual configuration or additional signaling overhead.
Solution Approach 2:
The UE autonomously applies the configured priority schemes based on service type identification. When the UE identifies a service type (e.g., voice service), it automatically applies the corresponding priority scheme without requiring continuous network intervention, thereby reducing signaling overhead and simplifying network-side complexity.
3Reliability
If voice service is always prioritized, then voice quality is maintained, but data service throughput is reduced
Solution Approach 1:
The patent implements periodic switching between priority schemes based on voice activity detection. When voice traffic is detected, the first priority scheme (favoring voice) is applied; when voice traffic ceases, the second priority scheme (favoring data) is applied. This periodic adaptation ensures voice quality when needed while maximizing data throughput during silent periods.
Solution Approach 2:
The patent dynamically adjusts priority allocation based on real-time service requirements. The network switches between priority schemes depending on whether voice or data services are active, ensuring that voice services receive guaranteed quality when in progress while allowing data services to utilize available resources during voice idle periods.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may initiate a first service associated with a first subscriber identity module (SIM) of the UE and a first priority. The UE may initiate a second service associated with a second SIM of the UE and a second priority. The UE may switch the first priority and the second priority during at least part of the first service or the second service. The UE may perform a communication in accordance with at least one of the first priority or the second priority. Numerous other aspects are described.