Abstract: A method for using legacy Wi-Fi and Wi-Fi Peer-to-Peer (P2P) simultaneously is provided. The method includes entering a device discovery process of Wi-Fi P2P, if use of a Wi-Fi P2P function is requested while using a legacy Wi-Fi function, acquiring a Group Owner (GO) right of Wi-Fi P2P in the device discovery process, performing a listen state over the same channel as a channel where the legacy Wi-Fi function is in use, through the acquisition of the GO right, and performing a search state over a social channel of Wi-Fi P2P, and repeating the listen state and the search state until the device discovery process is ended.

Abstract: A method and an apparatus for creating a Wireless Fidelity (Wi-Fi) Peer-to-Peer (P2P) group are provided. The method includes creating a 1:N P2P group by connecting a third P2P device to a 1:1 P2P group created by setting a first P2P device as a group owner and setting a second P2P device as a group client, transmitting, by the second P2P device, a request message requesting creation of a new P2P group, to the third P2P device, transmitting, by the third P2P device, a response message to the request message, and creating the new P2P group between the second P2P device and the third P2P device through exchange of the request message and the response message.

Abstract: A method, system and mobile device for searching for and acquiring a desired application by using Near Field Communication (NFC) regardless of time and location are provided. In the method, the mobile device reads a keyword from an NFC tag of a target structure in response to a tagging event between the mobile device and the NFC tag. Then the mobile device performs an application search using the keyword, and downloads a specific application found using the keyword.

Abstract: A method and an apparatus for controlling access to an Access Point AP in a mobile terminal are provided. The method includes storing information of an AP as profile information, determining whether profile information of an accessed AP is stored in the mobile terminal when the mobile terminal accesses the AP, and logging in to the accessed AP based on the stored profile information.

Abstract: A device discovery method and apparatus of a Wi-Fi Peer-to-Peer (P2P) device for improving connection compatibility with legacy devices are provided. The method includes receiving a command for executing a modified P2P device discovery mode, configuring the Wi-Fi P2P device as a group owner autonomously, entering a group owner receive mode in which a probe request can be received, and discovering an external device which transmits the probe request.

Abstract: A method and apparatus for transmitting Wireless Local Area Network (WLAN) network sharing data of a Wi-Fi Peer-to-Peer (P2P) group are provided. The method includes forming the Wi-Fi P2P group, establishing, at a mobile station that is a Wi-Fi P2P group owner, a connection to a WLAN access point, determining whether data, to be communicated with a mobile station that is a Wi-Fi P2P client, is WLAN network sharing data, assigning, when the data is the WLAN network sharing data, a high priority to the WLAN network sharing data, preoccupying a radio channel for data transmission through channel access contention with the high priority, and transmitting the WLAN network sharing data through the preoccupied radio channel.

Abstract: An apparatus and method for supporting a communication service of a communication terminal having a relay function are provided. The method for supporting a communication service of a communication terminal includes verifying a current data transmission rate in a relay operation mode to determine a transmission power level of a down link, and relaying the communication service to the down link according to the transmission power level. The method and the apparatus for supporting the communication service of the communication terminal with the relay function may control transmission power such that the communication terminal may maintain data transmission rate with a suitable level.

Abstract: A Wireless Local Area Network (WLAN) terminal and tethering service providing method for the same are provided. The WLAN terminal supporting a mobile infrastructure mode effectively provides a tethering service to external devices by managing external devices using an operating device list and a waiting device list. The method includes: receiving a connection request from a device, determining whether an operating device list is full, adding the device to the operating device list when the operating device list is not full, providing a tethering service to the device, determining whether a waiting device list is full when the operating device list is full, adding the device to the waiting device list when the waiting device list is not full, and permitting connection of the device and preventing the device from receiving a tethering service, and rejecting the connection request when the waiting device list is full.

Abstract: A mobile device and a method for providing a tethering service via a security mode and a list of preferred mobile devices are provided. The method includes determining, when the mobile device receives a connection request from a client mobile device, a number of client mobile devices that are currently connected to the mobile device, determining, when the number of connected client mobile devices is less than a preset maximum connection number, the number of created Basic Service Sets (BSSs), determining, when the number of BSSs is less than a preset maximum creation number, the identification-information regarding the client mobile device that requested connection, and providing a tethering service to the client mobile device according to the determined identification-information.

Abstract: An apparatus and a method for operating as a virtual terminal to participate in competition for medium access while a mobile terminal operates as an access point are provided. In a case where the mobile terminal accesses a medium while competing with a terminal that transmits data of low priority, an apparatus and a method for entering a low power mode to resolve a power consumption problem of the mobile terminal are provided. The apparatus includes a medium competing unit, which allows the mobile terminal to operate as a virtual terminal and participate in competition for a medium access when data to be transmitted does not exist in the mobile terminal operating as an Access Point (AP).

Abstract: An apparatus and a method for reducing power consumption in a portable terminal that transmits digital broadcast data through an ad hoc network are provided. If a terminal receiving digital broadcast transmits the received digital broadcast to a neighboring terminal, a control unit enters a sleep mode after buffering received data for a predefined time.

Abstract: An apparatus and a method for controlling digital broadcasting reproduction such as digital broadcasting reproduction via a sub-screen, reproduction end and channel group management through simple touch drag in a mobile terminal are provided. The apparatus includes a controller. The controller controls a Picture In Picture (PIP) function of the apparatus and controls an operation of channel group management using a drag-and-drop with a main screen output.

Abstract: A method and apparatus for previewing a broadcast channel in a portable terminal are provided. The method of previewing the broadcast channel in the portable terminal includes detecting whether a channel preview event is generated in a state where a broadcast application is not accessed, if the preview event is generated, determining whether Packet IDentifier (PID) and Session Description Protocol (SDP) information for dynamic zapping data is pre-stored, if the PID and SDP information is pre-stored, performing frequency scanning and camping, and receiving and reproducing the dynamic zapping data on the basis of the stored PID and SDP information.

Abstract: An apparatus and a method for providing digital broadcasting information in a mobile terminal are provided. The apparatus includes a channel list manager for setting a channel list according to an actual burst transmission order, and a controller for performing a process to sequentially search for channels of the set channel list using a plurality of players.

Abstract: An apparatus and method for supporting a handover of a mobile terminal without a Global Positioning System (GPS) are provided. The method includes receiving a sub-cell IDentifier (ID) from a Base Station (BS) using Transmission Parameter Signaling (TPS), recognizing a location of the mobile terminal using the received sub-cell ID, and determining a candidate group of adjacent cells, to which the handover is possible, using the recognized location information of the mobile terminal. Accordingly, the mobile terminal may performs a handover within a short period of time, and a seamless service may be provided by avoiding a possibility that a service Further, in comparison with the conventional handover, power consumption may be reduced by decreasing a frequency search time of an adjacent cell during an off time.