Access Point Base Station Acquisition via System Selection File

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Solution Overview

Problem

Wireless communication systems face challenges in efficiently allowing access terminals to acquire authorized access point base stations while preventing unauthorized attempts to acquire other access point base stations, especially in environments with overlapping coverage areas.

Innovation Solution

The implementation of a system selection file with preference parameters and acquisition parameters for access point base stations, utilizing local flags to differentiate between permitted and unauthorized systems, allowing access terminals to prioritize and acquire only authorized systems and avoid unauthorized ones.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If access terminals are allowed to attempt acquisition of all detected base stations, then the system provides maximum flexibility in system selection, but unauthorized terminals waste resources attempting to acquire restricted access point base stations

Engineering Contradiction:

Improvesystem selection flexibilityVSAvoidenergy wasted on unauthorized acquisition attempts

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent segments the base station population into two distinct categories: open base stations and restricted access point base stations. This segmentation is implemented through the system selection file which contains separate identification information and acquisition parameters for each type, allowing terminals to differentiate and apply appropriate acquisition strategies for each category

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements preliminary action by providing terminals with system selection files containing pre-configured identification information and acquisition parameters for both open and restricted base stations before the terminal encounters them in the field. This pre-provisioning enables terminals to make informed decisions about which base stations to attempt acquisition of, avoiding wasted energy on restricted stations

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If access terminals use a single preference parameter for all base stations, then the system structure remains simple, but terminals cannot differentiate between authorized and unauthorized systems

Engineering Contradiction:

Improvesystem structure simplicityVSAvoidauthorization differentiation capability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies local quality by implementing different preference parameters specifically for restricted access point base stations versus other base stations. The system selection file contains separate preference parameter sets that allow terminals to apply appropriate authorization checks and acquisition strategies based on the specific type of base station being evaluated

Inventive Principle:

Principle #3Local quality

3Productivity

If the system provides detailed acquisition parameters for multiple base station types, then terminals can efficiently acquire authorized systems, but the system selection file becomes more complex

Engineering Contradiction:

Improveacquisition efficiencyVSAvoidsystem selection file complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments acquisition parameters into distinct sets for open base stations and restricted access point base stations within the system selection file. Each segment contains the specific parameters needed for that base station type, allowing terminals to efficiently retrieve and apply the appropriate parameter set without being burdened by unnecessary parameters for other types

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system selection file structure is designed to be universal by accommodating multiple base station types through a common framework. The file can contain identification information and acquisition parameters for both open and restricted base stations using consistent data structures and formats, enabling a single file to serve multiple purposes without requiring separate configuration files

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8948749B2System and method to facilitate acquisition of access point base stations

Publication Date: 2015.02.03 QUALCOMM INC

AI summary

Devices and methods are provided for facilitating selection and acquisition of an access point (AP) base station via implementation of a system selection file that may include a preferred roaming list (PRL), a public land mobile network (PLMN) database, or the like. The selection attempts may be limited to specific preferred systems, such as, for example, the AP base station. The system selection file includes identification parameters of the preferred systems. In one embodiment, the identification parameters include at least one of a system identifier (SID) and a network identifier (NID) for a given one of the systems.