Base Station Pilot Beacon Generation Using Shared Amplifier
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Solution Overview
Problem
Conventional compact Base Stations (BS) supporting multiple communication systems, such as CDMA2000 1x and CDMA EV-DO, require expensive power amplifier modules and transmitters for each system, making it cost-ineffective to generate hopping pilot beacons for seamless handover of Mobile Stations (MS).
Innovation Solution
A BS apparatus with a single high-power amplifier and transmitter subsystem alternately generates pilot beacons for both CDMA2000 1x and CDMA EV-DO systems by using shared components and controlling the beacon controller to synchronize and alternate the transmission of beacon signals, ensuring non-overlapping time domains and matching transmission periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power amplifier modules and transmitters are used for each communication system (CDMA2000 1x and CDMA EV-DO), then reliable beacon signal generation for each system is achieved, but hardware cost increases significantly
Solution Approach 1:
The patent implements a single power amplifier module and transmitter that can operate in multiple communication systems (CDMA2000 1x and CDMA EV-DO). The beacon signal generation unit controls this shared hardware to alternately generate beacons for both systems, eliminating the need for separate expensive subsystems while maintaining reliable beacon generation for seamless handover in both communication standards
Solution Approach 2:
The patent merges the previously separate power amplifier modules and transmitters for CDMA2000 1x and CDMA EV-DO into a single shared hardware platform. The beacon signal generation unit coordinates the alternating transmission of beacons for both systems through this unified hardware, reducing component count and cost while ensuring reliable handover support for both communication systems
2Ease of manufacture
If a single power amplifier module and transmitter are shared between two communication systems, then hardware cost is reduced, but beacon signal transmission timing and frequency coordination becomes more complex
Solution Approach 1:
The beacon signal generation unit implements periodic alternating transmission of beacons for CDMA2000 1x and CDMA EV-DO systems. By dividing the transmission timeline into periodic intervals where each system receives dedicated time slots, the patent simplifies the coordination of shared hardware while maintaining proper beacon transmission for both systems, reducing the complexity of frequency and timing management
Solution Approach 2:
The patent segments the beacon transmission timeline into distinct time intervals, allocating specific periods for CDMA2000 1x beacons and other periods for CDMA EV-DO beacons. This temporal segmentation allows a single power amplifier and transmitter to serve both systems without frequency or timing conflicts, managing hardware sharing complexity through structured time division
Data Source
AI summary
An apparatus for generating a pilot beacon of a Base Station (BS) supporting a first communication system and a second communication system is provided. The apparatus includes a first system unit for converting a first signal for the first communication system into a first high-frequency signal, a second system unit for converting a second signal for the second communication system into a second high-frequency signal, and a beacon system unit for alternately generating beacon signals for the first and second communication systems by using the first and second signals.