Handover Information Storage Using Direction of Arrival Estimation
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Solution Overview
Problem
In mobile communication systems, terminals face inefficiencies in handover processes due to the need to search and receive information from multiple neighboring base stations, leading to increased battery consumption and prolonged handover times.
Innovation Solution
An apparatus and method that estimate the direction of arrival (DOA) of signals from terminals to store handover information associated with specific base stations, allowing for the broadcasting of only relevant handover information to specific regions, reducing the number of base stations terminals need to search and simplifying the handover process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal receives information about all neighboring base stations, then the terminal can perform handover to any neighboring base station, but the terminal consumes more battery and spends more handover time
Solution Approach 1:
The patent applies local quality by providing different handover information to different terminals based on their specific locations. The base station determines the terminal's position and selectively provides handover information only for neighboring base stations relevant to that specific terminal's location, rather than providing universal information about all neighboring base stations to every terminal.
Solution Approach 2:
The patent segments the handover information by spatial regions. The service area is divided into multiple regions, and each terminal receives handover information segmented according to its specific region, reducing the overall information burden while maintaining comprehensive coverage across different locations.
2Adaptability or versatility
If the terminal receives information about all neighboring base stations, then the terminal can perform handover to any neighboring base station, but the handover time is prolonged
Solution Approach 1:
The patent reduces handover time by providing location-specific handover information that directly identifies relevant neighboring base stations. The terminal uses its position information to determine which neighboring base stations are relevant, eliminating the need to search through information about all neighboring base stations and thus reducing handover time while maintaining handover capability.
Solution Approach 2:
The patent applies preliminary action by pre-calculating and providing handover information for only those neighboring base stations that are relevant to the terminal's current location. This preliminary filtering of information before handover occurs eliminates the need for the terminal to perform extensive searches during the handover process, thereby reducing handover time.
3Adaptability or versatility
If the base station broadcasts handover information for all neighboring base stations, then all terminals can perform handover, but the base station burden increases
Solution Approach 1:
The patent reduces base station burden by implementing local quality in information broadcasting. The base station determines each terminal's position and provides customized handover information specific to that terminal's location and relevant neighboring base stations, rather than universally broadcasting information about all neighboring base stations to all terminals.
Solution Approach 2:
The patent segments the handover information broadcasting by spatial regions and terminal locations. The base station divides the service area into regions and provides handover information segmented according to terminal positions, reducing the total volume of information that needs to be processed and broadcast while ensuring all terminals receive appropriate handover services.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces the burden on base stations broadcasting handover information, shortens handover times, and extends terminal operation by minimizing unnecessary searches and power consumption.
Implementation Method 1
an estimation unit to estimate a direction of arrival (DOA) of a received signal with respect to a first base station based on the received signal
Data Source
AI summary
An apparatus for storing handover information in a mobile communication system is provided. The apparatus includes an estimation unit configured to estimate a direction of arrival (DOA) of a received signal with respect to a first base station based on the received signal, the received signal being received from a terminal belonging to the first base station, and a storage unit to store the estimated DOA as handover information associated with a second base station when the terminal is handed over to the second base station.