Sector Parameters Signature for Wireless Access Point Identification

Solution Overview

Problem

Current wireless communication systems face challenges in efficiently identifying and reselecting access points, particularly in systems with restricted association, where mobile devices struggle to determine sector parameters changes without frequent message reading, leading to resource inefficiencies and potential collisions with neighboring cells.

Innovation Solution

The method involves generating and transmitting sector parameters signatures based on previous signatures, system time, and identifiers, allowing mobile devices to predict and compare expected identifiers, thereby identifying access points without reading separate sector parameters messages, thus conserving resources and minimizing collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If mobile devices read separate sector parameters messages frequently to identify access points, then identification accuracy is improved, but resource consumption increases and collision risks increase

Engineering Contradiction:

Improveaccess point identification accuracyVSAvoidresource consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent extracts only the essential identification information from the full sector parameters message by using a signature field. The signature is generated from critical parameters (cell identity, system time, frame number) and allows mobile devices to verify access point identity without receiving or processing the complete parameter set, thereby reducing resource consumption while maintaining identification accuracy

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent creates a condensed copy of the sector parameters in the form of a signature. This signature contains the essential identification characteristics of the sector parameters but in a compressed format that requires minimal processing resources. The signature acts as a representative copy that enables accurate identification without the overhead of transmitting and processing full parameter messages

Inventive Principle:

Principle #26Copying

2Measurement precision

If mobile devices read separate sector parameters messages frequently to identify access points, then identification accuracy is improved, but collision risks increase

Engineering Contradiction:

Improveaccess point identification accuracyVSAvoidcollision risks

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent extracts only the essential identification information from the full sector parameters message by using a signature field. The signature is generated from critical parameters (cell identity, system time, frame number) and allows mobile devices to verify access point identity without receiving or processing the complete parameter set, thereby reducing resource consumption while maintaining identification accuracy

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The access point generates and transmits the signature in advance before the mobile device needs to perform identification. This preliminary transmission of the signature allows the mobile device to prepare for identification without triggering full message reception, reducing the likelihood of collisions with other identification processes

Inventive Principle:

Principle #10Preliminary action

3Loss of information

If access points transmit full sector parameters messages, then information completeness is improved, but transmission overhead increases

Engineering Contradiction:

Improveinformation completenessVSAvoidtransmission efficiency

Core Design Contradiction:

Loss of informationVSProductivity

Solution Approach 1:

The patent extracts only the essential identification information from the full sector parameters message by using a signature field. The signature is generated from critical parameters (cell identity, system time, frame number) and allows mobile devices to verify access point identity without receiving or processing the complete parameter set, thereby reducing resource consumption while maintaining identification accuracy

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the sector parameters into two parts: a condensed signature containing essential identification information, and the full parameter set that can be transmitted only when needed. This segmentation allows the access point to transmit minimal information (the signature) for most operations, improving transmission efficiency while maintaining information completeness when required

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8737295B2Sector identification using sector parameters signatures

Publication Date: 2014.05.27 QUALCOMM INC

AI summary

Systems and methodologies are described that facilitate identifying sectors using sector parameters signatures. The signatures can be generated as a known function of a previous sector parameters signature (or message parameters), system time, and an identifier. In this regard, mobile devices can determine an expected identifier from comparing the sector parameters signature to a sector parameters signature computed based at least in part on the system time known to the mobile device. In addition, the mobile device can utilize a known or an inferred previous parameters signature to determine the expected identifier. Multiple signatures can be evaluated to determine expected identifiers to increase the likelihood of correct identification since the signatures are generated using the known variables along with the identifier.