Abstract: A speaker module includes a yoke plate, a first speaker including a first magnet coupled to the yoke plate, a diaphragm spaced apart from the yoke plate and a first coil coupled to the diaphragm, and a second speaker including a housing coupled to the yoke plate and on a side of the first speaker, a second coil provided in the housing and coupled to the yoke plate, and a second magnet spaced apart from the second coil in the housing and coupled to the housing.

Abstract: A wearable electronic device according to an embodiment may comprise a plurality of speakers, a plurality of vibration devices, and at least one processor. The at least one processor may be configured to identify a first object corresponding to a first sound and a position of the first object in a virtual space of VR content displayed through the display. The at least one processor may be configured to obtain a second sound corresponding to the movement of the first object based on the first sound and the position of the first object. The at least one processor may be configured to output the second sound through the plurality of speakers. The at least one processor may be configured to determine one or more vibration devices corresponding to the movement of the first object among the plurality of vibration devices. The at least one processor may be configured to control the one or more vibration devices to vibrate while the second sound is output through the plurality of speakers.

Abstract: Disclosed herein are a base station apparatus, a resource management method, and a data processing method. The base station apparatus includes: a remote active antenna unit configured to perform transmission and reception of a wireless signal to and from a terminal; and a central unit connected to the remote active antenna unit, configured to process a signal received from the terminal or a signal to be transferred to the terminal, and configured to transfer resource allocation information to the remote active antenna unit, in which the remote active antenna unit schedules a data and a resource for the terminal based on resource allocation information received from the central unit.

Abstract: Disclosed herein are a base station apparatus, a resource management method, and a data processing method. The base station apparatus includes: a remote active antenna unit configured to perform transmission and reception of a wireless signal to and from a terminal; and a central unit connected to the remote active antenna unit, configured to process a signal received from the terminal or a signal to be transferred to the terminal, and configured to transfer resource allocation information to the remote active antenna unit, in which the remote active antenna unit schedules a data and a resource for the terminal based on resource allocation information received from the central unit.

Abstract: An apparatus and method for dynamically allocating a multicast path in a broadband wireless access system are provided. A method for an operation of a server providing a multicast service through a wireless access network includes determining to establish multicast paths for a first Base Station (BS) and at least one neighboring BS of the first BS when a terminal receiving the multicast service enters a network through the first BS, and transmitting a control station a message of instructing to establish the multicast path for a BS not holding the multicast path among the first BS and the at least one neighboring BS of the first BS.

Abstract: An apparatus and a method for managing an access state of a terminal for a group communication service in a wireless communication system are provided. In a method for operating a terminal for a group communication service in a wireless communication system, a bandwidth ranging message is transmitted to a base station in an idle state. The terminal is allocated an uplink resource from the base station. A message for access state transfer including a multicast Connection IDentifier (CID) is generated. The message for access state transfer is transmitted to the base station via the allocated uplink resource.

Abstract: An apparatus and a method for managing an access state of a terminal for a group communication service in a wireless communication system are provided. In a method for operating a terminal for a group communication service in a wireless communication system, a bandwidth ranging message is transmitted to a base station in an idle state. The terminal is allocated an uplink resource from the base station. A message for access state transfer including a multicast Connection IDentifier (CID) is generated. The message for access state transfer is transmitted to the base station via the allocated uplink resource.

Abstract: An apparatus and method for dynamically allocating a multicast path in a broadband wireless access system are provided. A method for an operation of a server providing a multicast service through a wireless access network includes determining to establish multicast paths for a first Base Station (BS) and at least one neighboring BS of the first BS when a terminal receiving the multicast service enters a network through the first BS, and transmitting a control station a message of instructing to establish the multicast path for a BS not holding the multicast path among the first BS and the at least one neighboring BS of the first BS.

Abstract: An apparatus and method for controlling transmission rate by determining whether a data transmission failure is caused by a channel error or a data collision in order to reduce a collision-caused rate decrease or a collision-caused rate increase delay in a WLAN. A collision-caused data transmission failure and if the number of data transmission failures reaches a predetermined threshold, data is retransmitted by means of an RTS/CTS exchange.

Abstract: Expected channel occupancy time is a wireless link metric determined based on a transmission protocol to be used for transmitting data in a wireless network. The wireless link metric may be used for routing or other network management functions. For determining the wireless link metric, an overhead is determined for one or more of accessing and releasing a channel to transmit a burst, including at least one frame, in the wireless network using the transmission protocol. An expected burst transmission time is calculated based at least on the overhead. The expected channel occupancy time is determined from the expected burst transmission time and an estimation of a number of frames to be successfully delivered during the burst.

Abstract: Expected channel occupancy time is a wireless link metric determined based on a transmission protocol to be used for transmitting data in a wireless network. The wireless link metric may be used for routing or other network management functions. For determining the wireless link metric, an overhead is determined for one or more of accessing and releasing a channel to transmit a burst, including at least one frame, in the wireless network using the transmission protocol. An expected burst transmission time is calculated based at least on the overhead. The expected channel occupancy time is determined from the expected burst transmission time and an estimation of a number of frames to be successfully delivered during the burst.

Abstract: An apparatus and method for controlling transmission rate by determining whether a data transmission failure is caused by a channel error or a data collision in order to reduce a collision-caused rate decrease or a collision-caused rate increase delay in a WLAN. A collision-caused data transmission failure and if the number of data transmission failures reaches a predetermined threshold, data is retransmitted by means of an RTS/CTS exchange.