Communication terminal, access point switching method, and active point switching control program

Abstract

[Problem] To realize optimum handover in consideration of not only reception environment of a communication terminal itself but also situations on the other party of communication. [Solving Means] A communication terminal includes: a reception environment information measuring unit for measuring information of reception environment around an access point; a transmission environment information measuring unit for measuring information of transmission environment around the access point; an access point search timing determining unit for determining a timing of searching for an access point to which the communication terminal is to be switched by using a combination of the measured reception environment information and transmission environment information; an access point searching unit for searching for an access point to which the communication terminal is to be switched at the access point search timing determined; a handover timing determining unit for determining a timing of handover to the access point to which the communication terminal is to be switched by using a combination of the measured reception environment information and transmission environment information; and a handover unit for performing handover to the searched access point at the determined handover timing.

Description

technical field [0001] The present invention relates to a communication terminal that searches for an access point and switches the access point during travel (movement), an access point switching method used when switching the access point, and an access point switching control program. Background technique [0002] In radio communication such as wireless LAN (Local Area Network), it is not necessary to connect a cable to a communication destination. Wireless communication is thus widely used by mobile communication terminals. Multiple access points are attached to telephone poles and electronic devices installed outdoors to cover a wide area by radio. In addition to such wireless LANs, each of cellular phones and PHS (Personal Handyphone System) also uses a plurality of access points as wireless base stations, thereby realizing wireless communication in a wide area. [0003] In a case where a communication terminal travels (moves) in a wide-area wireless communication sy...

AI Technical Summary

Problems solved by technology

However, in such handover, when the traveling speed of the communication terminal increases to a certain extent and above, a problem occurs so that the distance between the communication terminal and the current access point becomes too long before the handover is performed , thus the communication is disconnected

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