Abstract: Provided is a method of transmitting information regarding a device in a wireless personal area network (WPAN). In the method, a probe request frame is received from one of devices belonging to the WPAN according to a common mode which is a physical layer (PHY) transmission mode being commonly supported by the devices, the probe request frame containing information requesting information regarding a PHY transmission mode supported by another specific device, a probe response frame containing the information regarding the PHY transmission mode supported by the specific device is generated, and then the probe response frame is transmitted to the device transmitting the probe request frame, according to the common mode.

Abstract: A method and apparatus for efficiently retransmitting data in a wireless network environment are provided. The method includes transmitting a block comprising one or more data frames to a terminal, receiving an acknowledgement of receipt of the block from the terminal, and retransmitting a block comprising data frames that have not yet been received by the terminal to the terminal by referencing the acknowledgement of receipt. Accordingly, it is possible to enhance overall throughput by reducing receipt acknowledgement time during a data retransmission operation.

Abstract: A method and apparatus for transmitting a data frame in a communication network, such as a wireless local area network (WLAN), a power line communication (PLC) network, or the like. A transmitter forms one expansion frame using more than one frame, transmits more than one generated expansion frame to a receiver, requests a block acknowledgement (ACK) frame for the transmitted expansion frames, and, after receiving the block ACK frame, re-transmits an expansion frame having an error by changing a transmission parameter.

Abstract: A method and apparatus for protecting against copying high definition (HD) contents transmitted in a wireless HD (WiHD) network by using a WiHD source or sink device, the method including: determining a type of copy protection of contents transmitted in the WiHD network; calculating accumulatively a number of media access control (MAC) sub-packets as a input counter information, wherein the MAC sub packets constitute a MAC payload including the contents; packetizing the type of copy protection and the input counter information into a MAC packet; and transmitting the MAC packet to a WiHD sink device.

Abstract: Provided are an apparatus and method for transmitting a packet. The apparatus and method indicate a policy with respect to an acknowledgement packet and a retransmission packet, which correspond to the type of data to be transmitted, in a packet included in the data. The apparatus includes a Media Access Control (MAC) control unit which determines the type of packet to be transmitted, and sets the packet to indicate an acknowledgement policy and a retransmission policy with respect to the packet; and a communication unit which transmits the packet.

Abstract: Provided are a apparatus and method for transmitting data and a apparatus and method for receiving data, in which a transmitting station sets priorities among a plurality of data to be transmitted and a receiving station processes the plurality of data according to the priorities. The apparatus for transmitting data includes a packet-generation module which generates a plurality of data and a packet that includes the plurality of data and that specifies priorities between the plurality of data; and a communication module which transmits the packet through a communication channel.

Abstract: Provided is a method of transmitting information regarding a device in a wireless personal area network (WPAN). In the method, a probe request frame is received from one of devices belonging to the WPAN according to a common mode which is a physical layer (PHY) transmission mode being commonly supported by the devices, the probe request frame containing information requesting information regarding a PHY transmission mode supported by another specific device, a probe response frame containing the information regarding the PHY transmission mode supported by the specific device is generated, and then the probe response frame is transmitted to the device transmitting the probe request frame, according to the common mode.

Abstract: A method and apparatus for performing a handover in high frequency wireless communications are provided. A device for performing a handover in a wireless network, includes a priority order list including a priority order for becoming a coordinator, a handover controller making a handover request to a selected device existing on the network based on the priority order, and a transceiver transmitting network information of the device performing the handover according to the handover request.

Abstract: An apparatus and method for wireless communications are provided. The apparatus for wireless communications includes a media access control processing unit providing a plurality of sub-packets, and a transmitting/receiving unit outputting a packet that includes the plurality of sub-packets using a plurality of transmission modes.

Abstract: An apparatus and method for wireless communications are provided. The apparatus for wireless communications includes a receiving unit which receives a packet, which comprises a plurality of sub-packets, output from a transmitting device, and processes the received packet in a plurality of signal processing modes that correspond to a plurality of transmission modes applied to the received packet, and a media access control processing unit which acquires data from the sub-packets included in the processed packet.

Abstract: A method and apparatus for a coordinator handover in high frequency bandwidth wireless communication are provided. The apparatus having the coordinator includes a device priority list that records the priority of devices that can act as a coordinator, a handover controller that requests a handover to a selected device by referring to the device priority list, and a transceiver that transmits network information to the device according to the handover.

Abstract: A wireless network system and a method of transmitting/receiving data over a wireless network, and more particularly, for transmitting/receiving data over a wireless network capable of allowing a station that has not received a beacon frame or has received a damaged beacon frame among stations performing wireless communication in a high-frequency band to acquire schedule information in a super frame. A wireless network coordinator according to an exemplary embodiment of the invention includes: a media access control (MAC) unit that generates a beacon frame for forming a super frame including one or more channel time blocks; a band managing unit that allows a station on a network to set a specific channel time block among the channel time blocks to a period in which a packet including a predetermined control command is transmitted or received; and a transmitting unit that transmits the beacon frame including information on the setting through a predetermined communication channel.

Abstract: An apparatus and method of enhancing a block Ack in a WLAN is disclosed. The apparatus includes a frame verification module receiving a plurality of data frames and selecting erroneous frames, a sequence control mapping module mapping sequence numbers of the selected frames with spoofing numbers, and a frame combining module combining the mapped frames with other sequence frames and transmitting the combined frames. The data frames include spoofing sequence control frames with which the spoofing sequence numbers are mapped.

Abstract: The invention relates to a structure of a transmission packet for a link adaptation mechanism that can efficiently transmits/receives uncompressed data using a link adaptation mechanism in a high-frequency wireless communication, and an apparatus and method of transmitting/receiving a packet using the same. According to an aspect of the invention, a structure of a transmission packet for a link adaptation mechanism includes a payload having a plurality of data units obtained through error correction encoding of uncompressed data at a predetermined coding rate, an MAC header being added to the payload and having a link adaptation field and a link adaptation extension field expressing presence/absence of the link adaptation field for transmission/reception of the uncompressed data, and a PHY header being added to the MAC header and including information about the coding rate and information about usability of an unequal error protection mode.

Abstract: A stored transmission packet having a structure intended for use in a new link-adaptation mechanism, and a method ahd an apparatus for transmitting the transmission packet using the same are disclosed. The structure includes a payload composed of a plurality of transmission data units, a MAC header appended to the payload, and a PHY header appended to the MAC header, wherein the payload includes a link recommendation command in which information on a transmission mode is recorded, among a link-adaptation mechanism including Link Assessment, in which the state of a channel used to transmit and receive the transmission packet and the quality thereof is assessed, Link Recommendation, in which a transmission mode suitable for a current channel state is recommended using the result of Link Assessment, and Link Adjustment, in which the channel state is adjusted using information on the recommended transmission mode.

Abstract: A method of and an apparatus to improve stability and efficiency during data transmission performed over a wireless network includes transmitting a first data frame containing a plurality of data units to a receiving device, receiving from the receiving device a receipt of confirmation for each data unit received by the receiving device, and transmitting a second data frame containing at least one of the plurality of data units that have not been transmitted or received, according to the receipt of confirmation for each data unit received by the receiving device.

Abstract: A method and apparatus for efficiently transmitting a data frame in a communication network, such as a wireless local area network (WLAN), a power line communication (PLC) network, or the like. A transmitter forms one expansion frame using a plurality of frames, transmits a plurality of generated expansion frames to a receiver, requests a block acknowledgement (ACK) frame for the transmitted expansion frames, and, after receiving the block ACK frame, re-transmits an expansion frame having an error by changing its transmission parameter.

Abstract: A method and apparatus for efficiently retransmitting data in a wireless network environment are provided. The method includes transmitting a block comprising one or more data frames to a terminal, receiving an acknowledgement of receipt of the block from the terminal, and retransmitting a block comprising data frames that have not yet been received by the terminal to the terminal by referencing the acknowledgement of receipt. Accordingly, it is possible to enhance overall throughput by reducing receipt acknowledgement time during a data retransmission operation.