Access Point Identification via Pre-stored Pilot Sequences
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently identifying and acquiring access points, particularly in facilitating seamless handoffs between macro and femto cells, which affects voice and data service quality and reliability.
Innovation Solution
The method involves transmitting access point information to user equipment, comparing it with authorized access points, and initiating acquisition if permitted, along with handoff processes that include signal strength measurement and resource allocation between macro and femto cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If access point information is transmitted and compared with authorized access points, then identification accuracy and security are improved, but system complexity increases
Solution Approach 1:
The system pre-transmits and stores access point information (such as pilot sequences or identifiers) before the actual connection process. When a user equipment needs to connect, it compares received access point information against the pre-stored authorized list, enabling accurate and secure identification without complex real-time verification processes.
Solution Approach 2:
The patent uses copies of access point identification information (such as pilot sequences, cell identifiers, or network names) that are transmitted alongside the actual access point signals. These copies serve as reference data for comparison, allowing the system to verify authenticity without requiring complex cryptographic verification or deep packet inspection.
2Reliability
If handoff processes between macro and femto cells are optimized, then service quality and reliability are improved, but handoff time and processing complexity increase
Solution Approach 1:
The system performs handoff preparation in advance by pre-configuring user equipment with authorized access point information and establishing measurement criteria before the actual handoff event. During handoff execution, the equipment simply compares current access point information against the pre-stored list and executes the transition based on pre-established protocols, significantly reducing handoff time while maintaining service quality.
Solution Approach 2:
The patent implements feedback mechanisms where user equipment continuously measures signal strength and quality parameters of available access points, reports this information to the network, and uses the feedback to make informed handoff decisions. This enables seamless handoffs by adjusting the process dynamically based on real-time conditions while following pre-established decision criteria.
Data Source
AI summary
Systems, apparatus and methods for facilitating identification and/or acquisition of an access point are provided. Methods can include transmitting or receiving access point information (“API”) indicative of an identification of the access point (“AP”). The API can be provided at the AP through hardwiring or receipt of configuration information input by a user or transmitted to the AP by a network operator through Over-The-Air (“OTA”) signaling. The API can be computer-readable and, in some embodiments, the API can also be human-readable. The API can be transmitted on a paging channel from which user equipment (“UE”) can receive information. The frequency at which the API is transmitted can be fixed, dynamic and/or configurable. Upon receipt of the API, acquisition of the AP is attempted if the AP is determined to be a permitted AP.