SIM Queue Management Logic Prioritizes Network Registration

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Solution Overview

Problem

Subscriber Identity Modules (SIM) introduce delays in mobile equipment service acquisition due to slower processing speeds and FIFO queuing algorithms, particularly when handling multiple network access applications, leading to prolonged registration times for networks like LTE and 1× networks.

Innovation Solution

Implementing a queue management logic within mobile equipment to prioritize service acquisition requests over other requests, allowing higher priority requests related to network registration to be processed ahead of others, thereby reducing service acquisition delays without modifying the SIM's interface speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If FIFO queuing algorithm is used to process SIM requests, then requests are processed in order of arrival, but service acquisition requests experience delays due to slower SIM processing speed compared to ME processing speed

Engineering Contradiction:
Improveservice acquisition delayVSAvoidSIM processing speed
Core Design Contradiction:
Loss of timeVSSpeed

Solution Approach 1:

The patent applies dynamics by making the request processing system adaptive rather than static. The queue management logic dynamically prioritizes service acquisition requests over other requests based on real-time conditions. When a service acquisition request is detected, the system adjusts the processing order dynamically, placing these critical requests at the front of the queue regardless of their arrival time, thereby resolving the speed mismatch between ME and SIM processing

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements preliminary action by proactively identifying and prioritizing service acquisition requests before they complete processing. The queue management logic detects these requests early in the queue and advances them to the front, performing the prioritization action in advance rather than waiting for FIFO processing to naturally occur. This preliminary intervention prevents the inherent delay caused by SIM's slower processing speed

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If multiple network access applications are initialized sequentially on SIM, then each application can register with different networks, but registration time for subsequent applications increases due to queue buildup

Engineering Contradiction:
Improvemulti-network access capabilityVSAvoidregistration time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent resolves this contradiction by implementing dynamic priority assignment in the queue management logic. Instead of treating all requests equally in a static FIFO queue, the system dynamically identifies requests from multiple network access applications and prioritizes them based on their importance. Service acquisition requests from any application are elevated to high priority, allowing parallel progression of multiple network registrations without sequential delays

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies preliminary action by pre-identifying and prioritizing requests from multiple network access applications before they accumulate in the queue. The queue management logic proactively detects when multiple applications are initializing and advances their service acquisition requests, preventing the queue buildup that would otherwise occur with sequential processing. This ensures that adaptability for multi-network access is maintained without the time penalty of queue delays

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS9420063B2System and method for prioritizing requests to a SIM
Publication Date: 2016.08.16 QUALCOMM INC
  • US9420063B2 patent drawing
  • US9420063B2 patent drawing
  • US9420063B2 patent drawing

AI summary

The method and system relate to prioritizing access and shaping traffic to the SIM such that the requests to the SIM that pertain to registering the wireless mobile device on a network are given a higher priority than other requests to the SIM. The higher priority requests that relate to registering the mobile device on a network may be processed by the SIM prior to at least one other request that is not related to registering the mobile device on the network.