Electronics and Telecommunications Research Institute

Jaewoo Park

Sok-Kyu Lee

Jeeyon Choi

Jae Seung Lee

Young-Hoon Kim

Il-Gu Lee

Jae-Seung Lee

Jong-Ee Oh

Yun-Joo Kim

Minho Cheong

Ik Jae Chun

Moon-Sik Lee

Gil Young Choi

Seungkwon Cho

Hoo Sung Lee

Gyung-chul Shin

Kyou Ho Lee

Dong Guk Je

A method and apparatus for transmitting data. Data to be transmitted is an aggregated frame including a first subframe and a second subframe each including information used to verify integrity of each subframe, and an apparatus receiving the data verifies integrity of a subframe based on the information used to verify the integrity.

Method and apparatus for transmitting data

The present invention relates to a technique relating to a method and apparatus for generating, transmitting, and receiving a data frame having a newly proposed format in a wireless communication system. According to the technique, the method for generating a data frame in a wireless communication system comprises the following steps: generating at least one first subframe; generating at least one second subframe; and generating a data frame including the first and second subframes, wherein the first and second subframes include length information of a MAC protocol data unit (MPDU) contained in the first and second subframes, and the length information of the MPDU contained in the second subframe is zero.

Method and apparatus for generating, transmitting, and receiving a data frame in a wireless communication system

An apparatus for transmitting data in a communication system includes: a receiver configured to receive signals from a plurality of terminals in a multiuser-multi-input multi-output (MU-MIMO) scheme; an assignor configured to assign group IDs to terminal groups, respectively after identifying the plurality of terminals and grouping the plurality of terminals into the terminal groups; a generator configured to define a load element which indicates a resource and load state of a basic service set (BSS) through the group IDs and to generate a beacon frame including the load element; and a transmitter configured to transmit the beacon frame to the plurality of terminals in the MU-MIMO scheme.

Apparatus and method for transmitting/receiving data in communication system

A power control apparatus of a wireless communication terminal providing a voice over internet protocol (VoIP) service in a wireless communication system includes a user interface unit configured to include a voice CODEC using in the VoIP service, a controller configured to be connected to the user interface unit, include predetermined application programs including a VoIP application program, and control signaling for setting up a VoIP call and canceling a VoIP call, and a medium access control (MAC) processor configured to perform a medium access control function and include a timer unit for beginning a unscheduled-service period (U-SP) by receiving a VoIP call setup signal and a VoIP call cancel signal from the controller.

Apparatus and method of power saving for stations in wireless communication system

The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.

Method and apparatus for transceiving data in a MIMO system

Provided are an apparatus and method for testing call processing performance and conformance of a media gateway controller and a media gateway with respect to a media gateway control (MEGACO) protocol. The method includes generating a predetermined scenario regarding a test of call processing performance of a media gateway controller or a media gateway; selecting a function of the media gateway controller or the media gateway and emulating virtual analog lines between the media gateway controller and the media gateway according to the scenario; and testing the call processing performance of the media gateway controller or the media gateway using the virtual analog lines and the selected media gateway controller or the media gateway. Accordingly, it is possible to effectively test the call processing performance of the media gateway controller or a media gateway without test equipment.

Apparatus and method for testing MEGACO protocol

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Daejeon, South Korea

Jaewoo Park