Abstract: An apparatus for managing a security policy of a firewall according to an embodiment includes a rule request module that receives one or more requested rules to be applied to a firewall, a rule merge module that merges a pre-applied rule of the firewall and the one or more requested rules when the number of rules applied to the firewall exceeds a maximum number of rule registrations of the firewall due to the requested rule, and a firewall interface module that receives the pre-applied rule from the firewall and provides the pre-applied rule to the rule merge module, and re-registers a merged rule merged through the rule merge module in the firewall, and the rule merge module is configured to merge the pre-applied rule and the one or more requested rules so that a security vulnerable space occurring due to the merging is minimized.

Abstract: An apparatus for managing a security policy of a firewall according to an embodiment includes a rule request module that receives one or more requested rules to be applied to a firewall, a rule merge module that merges a pre-applied rule of the firewall and the one or more requested rules when the number of rules applied to the firewall exceeds a maximum number of rule registrations of the firewall due to the requested rule, and a firewall interface module that receives the pre-applied rule from the firewall and provides the pre-applied rule to the rule merge module, and re-registers a merged rule merged through the rule merge module in the firewall, and the rule merge module is configured to merge the pre-applied rule and the one or more requested rules so that a security vulnerable space occurring due to the merging is minimized.

Abstract: An apparatus for accessing a wireless network includes an access manager configured to request access to a wireless network according to a wireless network access condition including at least one desired service set identifier (SSID); and a wireless network access module configured to search for at least one wireless network corresponding to the at least one desired SSID, and access the searched at least one wireless network.

Abstract: Disclosed are an apparatus and method for controlling transmission power of a terminal in a wireless environment. The apparatus for controlling transmission power of a terminal includes an optimal transmission power calculation unit configured to calculate an optimal transmission power value for a terminal of a type, the terminal being accessible to one or more wireless networks; a transmission power setting unit configured to, when an access of the terminal to at least one of the one or more wireless networks is sensed, provide the terminal with optimal transmission power values corresponding to the terminal and the network accessed by the terminal.

Abstract: Provided are an apparatus for setting a roaming parameter and a method for the apparatus to set a roaming parameter. The apparatus includes a receiver configured to receive terminal information from a terminal connected to a wireless local area network (LAN), a manager configured to store and manage roaming parameters according to terminal models connectable to the wireless LAN (terminal-model-specific roaming parameters), a calculator configured to calculate a roaming parameter of the terminal using the received terminal information and the terminal-model-specific roaming parameters, and a transmitter configured to transmit the calculated roaming parameter to the terminal.

Abstract: Provided are an apparatus for setting a roaming parameter and a method for the apparatus to set a roaming parameter. The apparatus includes a receiver configured to receive terminal information from a terminal connected to a wireless local area network (LAN), a manager configured to store and manage roaming parameters according to terminal models connectable to the wireless LAN(terminal-model-specific roaming parameters), a calculator configured to calculate a roaming parameter of the terminal using the received terminal information and the terminal-model-specific roaming parameters, and a transmitter configured to transmit the calculated roaming parameter to the terminal.

Abstract: Provided are a system and method for setting an adaptive set of handoff parameters. The system includes a user terminal configured to transmit an authentication request to a network and receive a set of handoff parameters from the network; an access point (AP) belonging to the network and configured to receive the authentication request from the user terminal, transmit the authentication request to a central management server, receive the set of handoff parameters from the central management server, and transmit the set of handoff parameters to the user terminal; and the central management server, which is configured to store and manage a plurality of network-specific sets of handoff parameters for one or more networks, authenticate the user terminal using the authentication request received from the AP, and transmit a set of handoff parameters of a network to which the authenticated user terminal connects to the AP.

Abstract: Disclosed are an apparatus and method for controlling transmission power of a terminal in a wireless environment. The apparatus for controlling transmission power of a terminal includes an optimal transmission power calculation unit configured to calculate an optimal transmission power value for a terminal of a type, the terminal being accessible to one or more wireless networks; a transmission power setting unit configured to, when an access of the terminal to at least one of the one or more wireless networks is sensed, provide the terminal with optimal transmission power values corresponding to the terminal and the network accessed by the terminal.

Abstract: An apparatus for accessing a wireless network includes an access manager configured to request access to a wireless network according to a wireless network access condition including at least one desired service set identifier (SSID); and a wireless network access module configured to search for at least one wireless network corresponding to the at least one desired SSID, and access the searched at least one wireless network.

Abstract: Provided are a wireless terminal and a method of managing a network connection using the same. The wireless terminal includes a login processor configured to carry out a login procedure including an authentication procedure and a user account verification procedure, a received signal strength indication (RSSI) detector configured to detect an RSSI and check a receiving state, a wireless connection profile manager configured to generate, maintain, or delete a wireless connection profile, and a controller configured to monitor a login process state and a network connection state from the login processor and the RSSI detector and control the login processor or the wireless connection profile manager according to the monitoring result.

Abstract: Embodiments of the disclosure relate to method and apparatus for efficient wireless adaptive uplink protocols for communication networks.

Abstract: Provided are a system and method for setting an adaptive set of handoff parameters. The system includes a user terminal configured to transmit an authentication request to a network and receive a set of handoff parameters from the network; an access point (AP) belonging to the network and configured to receive the authentication request from the user terminal, transmit the authentication request to a central management server, receive the set of handoff parameters from the central management server, and transmit the set of handoff parameters to the user terminal; and the central management server, which is configured to store and manage a plurality of network-specific sets of handoff parameters for one or more networks, authenticate the user terminal using the authentication request received from the AP, and transmit a set of handoff parameters of a network to which the authenticated user terminal connects to the AP.

Abstract: Embodiments of the disclosure relate to adaptive uplink protocols for communication networks.

Abstract: A channel allocating method for random access is disclosed, which is suitable for allocation of uplink RACH in a radio access network and by which random access processing performance in a radio access network is enhanced using RACH of new structure. The present invention includes the steps of setting up a channel area (Ic) dedicated for new access attempt among random access channels of a prescribed frame (t) and allowing a mobile terminal to attempt access to an access point via a prescribed random access channel corresponding to the channel area (Ic).

Abstract: A method is provided for analyzing data transmission throughput in a wireless LAN of a multi sector environment. The method may include determining a sum of symbols of all sector switch guard times and propagation delay guard times of a MAC frame. The method may also include subtracting the number of determined symbols, the number of symbols of a signaling PDU and the number of symbols of a data PDU except a LCH from the number of symbols set in the MAC frame. Still further, the method may include displaying data transmission throughput by using a subtraction result value. Accordingly, by calculating the number of symbols occupied only by a LCH except sector switch guard times and propagation delay guard times, data transmission throughput can be accurately analyzed.

Abstract: A method is provided for analyzing data transmission throughput in a wireless LAN of a multi sector environment. The method may include determining a sum of symbols of all sector switch guard times and propagation delay guard times of a MAC frame. The method may also include subtracting the number of determined symbols, the number of symbols of a signaling PDU and the number of symbols of a data PDU except a LCH from the number of symbols set in the MAC frame. Still further, the method may include displaying data transmission throughput by using a subtraction result value. Accordingly, by calculating the number of symbols occupied only by a LCH except sector switch guard times and propagation delay guard times, data transmission throughput can be accurately analyzed.

Abstract: A reserved channel allocating method in a mobile radio communication system which can adaptively control the allocation of the number of reserved channels using a fuzzy logic controller in accordance with the fluctuant handoff traffic density. According to this method, the traffic density of handoff calls is identified for a period determined by a base station, and the ratio of the number of normal channels for processing initial calls and the handoff calls to the number of reserved channels for processing the handoff calls is adjusted in accordance with the traffic density of the handoff calls.