Apparatus and method for deciding handover in portable terminal
AssigneeSamsung Electonics Co., Ltd.
InventorJong-Mu CHOI
Life of this patent
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Abstract
An apparatus and method for deciding a handover in a dual mode portable terminal supporting a cellular network and an unlicensed ISM (Industrial, Scientific and Medical) band network based on a Carrier Sensing Multiple Access with Collision Avoidance (CSMA/CA) scheme is provided. The method includes checking for an available throughput of an Access Point (AP) by analyzing a signal received from the AP of the unlicensed-band network while using the cellular network; determining whether the AP can provide a service provided through the cellular network by using the available throughput of the AP; and if it is determined that the AP can provide the service, deciding whether to handover to the AP by measuring a strength of the received signal.
Claims18
A method of deciding a handover in a dual mode portable terminal supporting a cellular network and an unlicensed-band network, comprising the steps of:
- checking for an available throughput of an Access Point (AP) by analyzing a signal received from the AP of the unlicensed-band network while using the cellular network;
- determining whether the AP can provide a service provided through the cellular network by using the available throughput of the AP;
- and
- deciding whether to handover to the AP by measuring a strength of the received signal, if it is determined that the AP can provide the service.
A method of operating an Access Point (AP) of an unlicensed-band network for deciding a handover in a portable terminal, comprising the steps of:
- computing an available throughput according to the number of users currently registered;
- and
- inserting the computed available throughput to a beacon signal and transmitting the beacon signal to the portable terminal.
An apparatus for deciding a handover in a dual mode portable terminal supporting a cellular network and an unlicensed-band network, comprising:
- a communication module for receiving a signal from an Access Point (AP) of the unlicensed-band network while using the cellular network;
- and
- a handover determining unit for deciding whether to handover to the AP by using the available throughput obtained from the received signal and using a strength of the received signal.
An apparatus for operating an Access Point (AP) of an unlicensed-band network for deciding a handover in a portable terminal, comprising:
- a user manager for computing an available throughput according to the number of users currently registered;
- and
- a communication module for inserting the computed available throughput to a beacon signal and transmitting the beacon signal to the portable terminal.
A method for deciding a handover in a dual mode portable terminal supporting a cellular network and an unlicensed-band network, comprising:
- receiving a signal from an Access Point (AP) of the unlicensed-band network while using the cellular network;
- and
- deciding whether to handover to the AP by using the available throughput obtained from the received signal and using a strength of the received signal.
Dependencies are inferred from the claim text.