Handover Destination Selector for Mobile Station Devices
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Solution Overview
Problem
Existing wireless communication systems face increased processing loads on mobile station devices due to frequent handovers between macro and micro cells, leading to reduced throughput and network load inefficiencies.
Innovation Solution
The system reports micro base station information from macro or micro base stations to mobile devices, enabling the mobile station device to select handover destinations, thereby reducing the number of handovers and maintaining network efficiency without increasing processing loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile terminal performs frequent handovers between macrocell base station and micro base station for CSG cell, then the mobile terminal can access optimal cells for service, but the amount of control data increases and throughput decreases
Solution Approach 1:
The system pre-configures the mobile terminal with a list of allowed micro base stations for CSG cells before handover. This preliminary configuration prevents the terminal from attempting handovers to unauthorized micro base stations, thereby reducing control data overhead and preventing throughput degradation while still allowing access to legitimate CSG cells when needed.
2Reliability
If the mobile terminal performs frequent handovers between macrocell base station and micro base station for CSG cell, then the mobile terminal can access optimal cells for service, but the network exchanger has heavy load to manage positions
Solution Approach 1:
The network exchanger pre-loads the mobile terminal with a configured list of micro base station identifiers for CSG cells before the terminal needs to perform handovers. This preliminary action eliminates the need for the terminal to query or report its position to the network exchanger during each potential handover event, significantly reducing the network exchanger's positional management load while maintaining the ability to access CSG cells.
3Adaptability or versatility
If the mobile terminal autonomously selects handover destinations without configuration, then the terminal can freely access available cells, but the number of handovers increases compared to related art
Solution Approach 1:
The patent introduces a configured list of allowed micro base stations as an intermediary between the mobile terminal's autonomous handover selection capability and the network's handover control requirements. This intermediary list allows the terminal to autonomously select handover destinations only from pre-approved CSG micro base stations, maintaining access flexibility while preventing excessive handovers to unauthorized cells.
Data Source
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AI summary
A wireless communication system includes: a macrocell base station device; a micro base station device serving a cell having a region including at least a part of a region of a cell served by the macrocell base station device; and a mobile station device. One of the macrocell base station device and the micro base station device includes a reporter configured to report, to the mobile station device, micro base station information indicating the micro base station device to which the mobile station device can perform a handover. The mobile station device includes a handover destination selector configured to select a handover destination based on the micro base station information reported. Thereby, a handover is prevented while preventing the processing load on the mobile station device.