| Patent application number | Description | Published |
|---|
| 20090241147 | METHOD OF TRANSMITTING LINK-ADAPTIVE TRANSMISSION OF DATA STREAM IN A MOBILE COMMUNICATION SYSTEM - A data transmitting method is disclosed. In transmitting A/V data stream in a transmitting device of a wireless network, the present invention includes transmitting the A/V data stream having a first data format to a receiving device, if a quality of a channel for carrying the A/V data stream to the receiving device is changed, deciding to change a data format of the A/V data stream to be transmitted to the receiving device into a second data format, and transmitting the A/V data stream having the second data format to the receiving device. | 09-24-2009 |
| 20090257403 | METHOD OF COMMUNICATING IN WIRELESS NETWORK - The present invention relates to a handover method that a current coordinator transfers a coordinating function of controlling a network to a different device configuring the network. The present invention relates to a method of selecting an optimal device as a coordinator in selecting the different device using priority information decided by a prescribed evaluation reference. And, the present invention relates to a method of simplifying a procedure in a manner of transmitting relevant information together with a handover request message. In a wireless network including a coordinator, a secondary coordinator is decided in advance. If the coordinator is suddenly unable to perform a function, the present invention relates to a method of enabling the function of the coordinator to be performed by the decided secondary coordinator. Thus, a process for transferring the coordinating function without the handover process is called a recovery process. The present invention relates to the recovery method and a method of deciding a secondary coordinator to perform a recovery. In the method of deciding the secondary coordinator, a method of deciding a more proper coordinator using information on coordinator priority is provided. | 10-15-2009 |
| 20090268697 | METHOD OF CHANNEL ASSESSMENT AND CHANNEL SEARCHING IN A WIRELESS NETWORK - A method of channel assessment and channel searching in a wireless network is disclosed. The wireless network separately performs a channel assessment procedure and a channel searching procedure for channel change or another object. The channel assessment procedure is to measure a status or quality of a channel which is currently used in the wireless network. A coordinator of the wireless network designates a time interval for the channel assessment to notify other device of it. The channel assessment procedure may be performed periodically, and is preferably scheduled to allow other devices not to use the channel for the time interval which at least one device performs channel assessment. | 10-29-2009 |
| 20090310514 | METHOD OF CHANGING CHANNELS AND CONFIGURING A SUB NETWORK IN A WIRELESS NETWORK - A method of changing channels of a first device in a wireless network, which includes a first coordinator and at least one device, comprises searching whether another channel other than a first channel which is currently used in the wireless network is available, changing the first channel to a second channel among at least one or more available channels as a result of the searching step, and transmitting data to a second device or receiving data from the second device through the second channel. | 12-17-2009 |
| 20090310574 | METHOD FOR TRANSMITTING A DATA PACKET AND A METHOD OF ALLOCATING A CHANNEL IN A WIRELESS NETWORK - A present invention is related to a method for transmitting a data packet in a wireless network. An exemplary method comprises requesting to allocate a bi-directional channel time block including a first channel time block for transmitting a specific data packet and a second channel time block for receiving a response to the specific data packet; transmitting the specific data packet through the first channel time block; and receiving the response to the specific data packet through the second channel time block, wherein the bi-directional channel time block is predetermined to be allocated in an unreserved region in a superframe. | 12-17-2009 |
| 20100008279 | METHOD FOR MANAGING THE POWER IN THE WIRELESS NETWORK - In wireless network communication, the present invention provides a method of checking whether information on a request for a mode change is received for a prescribed channel time in a manner that a device configuring a network enters a power save mode in the course of not performing data transmission/reception and that a modem enters an awake state from a sleep state for the prescribed channel time. And, the prescribed channel time is determined to correspond to a time for transmitting a beacon. According to one preferred embodiment of the present invention, a modem of a device in a power save mode enters an awake state for a channel time period for broadcasting a beacon and then checks whether information on a power management mode change is received. If the information does not exist, a sleep state is reentered. If the power management mode change information is received, a power is managed by performing data transmission/reception in a manner of switching to a normal mode. | 01-14-2010 |
| 20100074097 | Method of Communicating In Wireless Network - The present invention relates to a handover method that a current coordinator transfers a coordinating function of controlling a network to a different device configuring the network. The present invention relates to a method of selecting an optimal device as a coordinator in selecting the different device using priority information decided by a prescribed evaluation reference. And, the present invention relates to a method of simplifying a procedure in a manner of transmitting relevant information together with a handover request message. In a wireless network including a coordinator, a secondary coordinator is decided in advance. If the coordinator is suddenly unable to perform a function, the present invention relates to a method of enabling the function of the coordinator to be performed by the decided secondary coordinator. Thus, a process for transferring the coordinating function without the handover process is called a recovery process. The present invention relates to the recovery method and a method of deciding a secondary coordinator to perform a recovery. In the method of deciding the secondary coordinator, a method of deciding a more proper coordinator using information on coordinator priority is provided. | 03-25-2010 |
| 20100097950 | IN ONE OR MORE NETWORK COEXISTABLE ENVIRONMENT, A METHOD FOR DETERMINING WHETHER A SPECIFIC CHANNEL IS AVAILABLE OR NOT, A METHOD FOR RECEIVING A SIGNAL FOR DETECTING AND A METHOD FOR COMMUNICATING IN COEXISTENCE WITH A DIFFERENT KIND OF NETWORK - Network communication and more particularly a method for determining whether a specific channel is available or not in an environment a plurality of networks can coexist are disclosed. In addition, a method for increasing a range for detecting a signal of a different type of network using a signal composed of a narrowband signal as a signal for detecting the different type of network is disclosed. Furthermore, a method for performing communication in an environment in which one or more communication networks and more particularly different types of networks coexist is disclosed. | 04-22-2010 |
| 20100216391 | METHOD OF CONTROLLING CONNECTION ESTABLISHMENT IN A WIRELESS NETWORK - Methods of controlling connection establishment to transmit or receive AA/data in a wireless network are disclosed. A method of controlling connection establishment to transmit or receive AA/data in a first device of a wireless network, which includes a coordinator and at least one device, comprises transmitting connection request information required to request connection establishment with a second device and a connection request message which includes capability information of the first device to the second device, and receiving a connection response message from the second device in response to the connection request message. As well as message formats to said methods are disclosed. | 08-26-2010 |
| 20100220669 | METHOD OF ALLOCATING RESOURCES IN A WIRELESS NETWORK - A method of allocating channel resources in a wireless network is disclosed. The method of allocating instant channel resources in a wireless network includes receiving channel resource scheduling information of a specific superframe from a coordinator of the wireless network, requesting the coordinator to allocate instant channel resources for an unreserved duration of the specific superframe, and receiving an announcement message from the coordinator, the announcement message announcing allocation of the instant channel resources within the unreserved duration of the specific superframe. | 09-02-2010 |
| 20100238879 | METHOD OF EXCHANGING MESSAGES FOR TRANSMISSION POWER CONTROL BETWEEN DEVICES IN A WIRELESS NETWORK, AND DEVICES FOR THE SAME - A method of exchanging messages for link recommendation in a receiving device of a wireless network comprises receiving a first data packet from a transmitting device; and transmitting link recommendation information to the transmitting device, the link recommendation information including transmit power control (TPC) information for controlling transmission power to be used for a second data packet in the transmitting device. | 09-23-2010 |
| 20100246514 | METHOD OF EXCHANGING MESSAGE AND DEVICES IN WIRELESS NETWORK - A method of exchanging messages at a device in a wireless network comprises transmitting a change request message for requesting a change of a beacon position among configuration parameters of the wireless network to a coordinator; and receiving a response message in response to the request message from the coordinator. | 09-30-2010 |
| 20100295730 | METHOD FOR TRANSMITTING A SIGNAL IN A MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM, AND AN APPARATUS FOR THE SAME - A method for transmitting a signal in a MBVD system is disclosed. A method for transmitting a signal in Multiple Input Multiple Output (MIMO) system includes, transmitting a training signal based on a predetermined sequence via at least one beamforming antenna group, the beamforming antenna group including a plurality of antennas, receiving first information indicating at least one available beamforming antenna group from among the beamforming antenna groups, and transmitting second information and antenna weight information, the second information indicating beamforming antenna group being determined on the basis of the first information, the antenna weight information being associated with a signal transmitted from the antenna group indicated by the second information. | 11-25-2010 |
| 20100309818 | METHOD OF CONTROLLING NETWORK IN WIRELESS NETWORK AND DEVICE - A method of controlling a network at a coordinator of a wireless network comprises receiving a beacon, which includes at least one of transmission coverage information associated with signal transmission coverage of the wireless network and ACK packet information indicating a type of an ACK packet transmitted from a plurality of devices for acknowledgement during reception of data packets, from a coordinator of the wireless network; receiving the data packets from a transmitting device of the wireless network; and transmitting an ACK packet having an ACK packet type determined based on the ACK packet type information included in the beacon to the transmitting device as a signal for acknowledgement of the data packets. | 12-09-2010 |
| 20100309869 | METHOD OF CHANNEL RESOURCE ALLOCATION AND DEVICES IN WIRELESS NETWORKS - A method of allocating channel resources from a first device to a second device in a wireless network comprises receiving channel resource allocation information from a coordinator of the wireless network to allocate the channel resources; transmitting data to the second device through the allocated channel resources; receiving channel resource request information from the second device to request the first device to allocate a part of the allocated channel resources; and deciding whether to allocate the part of the channel resources allocated from the coordinator, to the second device in accordance with the channel resource request information. | 12-09-2010 |
| 20100313082 | METHOD OF EXCHANGING MESSAGES AND SOURCE DEVICES - A method of exchanging messages, which are intended for streaming connection with a source device, in a sink device of a wireless network comprises transmitting a connect request message for data streaming to the source device; receiving a connect response message from the source device, the connect response message including connection information indicating the possibility of connection with the source device; and outputting a user interface indicating at least one of the connection information included in the connect response message and wait time information required for connection with the source device, on a display module. | 12-09-2010 |
| 20100329212 | METHOD OF COMMUNICATING IN WIRELESS NETWORK - The present invention relates to a handover method that a current coordinator transfers a coordinating function of controlling a network to a different device configuring the network. The present invention relates to a method of selecting an optimal device as a coordinator in selecting the different device using priority information decided by a prescribed evaluation reference. And, the present invention relates to a method of simplifying a procedure in a manner of transmitting relevant information together with a handover request message. In a wireless network including a coordinator, a secondary coordinator is decided in advance. If the coordinator is suddenly unable to perform a function, the present invention relates to a method of enabling the function of the coordinator to be performed by the decided secondary coordinator. Thus, a process for transferring the coordinating function without the handover process is called a recovery process. The present invention relates to the recovery method and a method of deciding a secondary coordinator to perform a recovery. In the method of deciding the secondary coordinator, a method of deciding a more proper coordinator using information on coordinator priority is provided. | 12-30-2010 |
| 20110002373 | APPARATUS FOR PERFORMING BEAM TRACKING PROCESS AND METHOD THEREOF - A method for performing beam tracking in a wireless communication network is provided. In the method, a transmitter station emits beam patterns including respective beam pattern indices to receiver stations and receives a feedback index indicating one of the beam patterns from each receiver station during a predetermined channel time after the emission of beam patterns is completed. A beam pattern feedback is processed using a simple code, thereby minimizing the amount of information and hardware required for beam search and tracking. In addition, in uni-directional beam tracking, it is possible to perform tracking on a number of beam links at once and a sub-channel that can be used for beam tracking and search is allocated to each station to allow a number of stations to simultaneously perform beam search, thereby reducing the amount of used channel time. | 01-06-2011 |
| 20110019603 | METHOD OF EXCHANGING MESSAGES FOR TRANSMISSION POWER CONTROL BETWEEN DEVICES IN A WIRELESS NETWORK, AND DEVICES FOR THE SAME - A method of exchanging messages for link recommendation in a receiving device of a wireless network comprises receiving a first data packet from a transmitting device; and transmitting link recommendation information to the transmitting device, the link recommendation information including transmit power control (TPC) information for controlling transmission power to be used for a second data packet in the transmitting device. | 01-27-2011 |
| 20110019645 | METHOD OF EXCHANGING MESSAGE AND DEVICES IN WIRELESS NETWORK - A method of exchanging messages at a device in a wireless network comprises transmitting a change request message for requesting a change of a beacon position among configuration parameters of the wireless network to a coordinator; and receiving a response message in response to the request message from the coordinator. | 01-27-2011 |
| 20110019646 | METHOD OF EXCHANGING MESSAGE AND DEVICES IN WIRELESS NETWORK - A method of exchanging messages at a device in a wireless network comprises transmitting a change request message for requesting a change of a beacon position among configuration parameters of the wireless network to a coordinator; and receiving a response message in response to the request message from the coordinator. | 01-27-2011 |
| 20110051638 | METHOD FOR MANAGING THE POWER IN THE WIRELESS NETWORK - Disclosed are methods for managing a power in a wireless network communication. One of the methods provides checking whether information on a request for a mode change is received for a prescribed channel time in a manner that a device configuring a network enters a power save mode in the course of not performing data transmission/reception and that a modem enters an awake state from a sleep state for the prescribed channel time. And, the prescribed channel time is determined to correspond to a time for transmitting a beacon. According to a preferred embodiment, a modem of a device in a power save mode enters an awake state for a channel time period for broadcasting a beacon and then checks whether information on a power management mode change is received. If the information does not exist, a sleep state is reentered. If the power management mode change (PMMC) information is received, a power is managed by performing data transmission/reception in a manner of switching to a normal mode. | 03-03-2011 |
| 20110069684 | METHOD OF CHANNEL ASSESSMENT AND CHANNEL SEARCHING IN A WIRELESS NETWORK - A method of channel assessment and channel searching in a wireless network is disclosed. The wireless network separately performs a channel assessment procedure and a channel searching procedure for channel change or another object. The channel assessment procedure is to measure a status or quality of a channel which is currently used in the wireless network. A coordinator of the wireless network designates a time interval for the channel assessment to notify other device of it. The channel assessment procedure may be performed periodically, and is preferably scheduled to allow other devices not to use the channel for the time interval which at least one device performs channel assessment. | 03-24-2011 |
| 20110110250 | METHOD OF ALLOCATING CHANNEL TIME, METHOD OF DETERMINING COMPATIBLE LINKS, AND APPARATUS FOR PROCESSING DATA - A method of searching a compatible beam link is disclosed. The present invention includes receiving a channel time for communicating data from a coordinator, the channel time being previously allocated for communicating data between other stations, determining an occurrence of interference during the allocated channel time, and transmitting a feedback signal to the coordinator, the feedback signal including an interference information indicating an occurrence of interference. According to embodiments of the present invention, stations of network search for compatible beams whenever necessary, whereby loads of energy management and operations of a main station can be reduced. | 05-12-2011 |
| 20110116429 | APPARATUS FOR CONTROLLING POWER OF WIRELESS DEVICE AND METHOD THEREOF - A method of controlling the power consumption of a wireless station is disclosed. The present invention includes waking-up a coordinator in a sleep state, entering an awake state and if a signal for turning on a peripheral station is received in the awake state, transmitting an awake message to the peripheral station via a beacon signal during a beacon timeslot. Accordingly, the power consumption of a coordinator in a WPAN network may be reduced, power control by a peripheral station may be facilitated, and inefficient operation and management of the network may be prevented. | 05-19-2011 |
| 20110126116 | APPARATUS FOR CONTROLLING MULTIMEDIA DEVICE AND METHOD FOR PROVIDING GRAPHIC USER INTERFACE - An apparatus for controlling a multimedia device and a method for providing a graphic user interface are disclosed. In the apparatus, a network interface transmits and receives data to and from the at least one multimedia device. A display displays a screen. A controller controls to display at least one place selection menu indicating a place in which the at least one multimedia device is located on the screen, display, upon selection of the at least one place selection menu, at least one player selection menu indicating a player located in the place, on the screen, and display at least one source selection menu indicating a source capable of outputting contents to the player on the screen, upon selection of the at least one player selection menu. | 05-26-2011 |
| 20110128948 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA - Apparatus and method for random access control in a directional communication system is disclosed. The method includes omni-directionally transmitting start time and duration information associated with data to be transmitted, the duration information indicating a duration of transmission of the data to be transmitted to a target station within a random access period; and directionally transmitting, subsequent to the omni-transmitting, the data to the target station beginning at the start time. Data collision caused by overlapped antenna beams linking remote stations can be prevented and communication can be reliably performed. | 06-02-2011 |
| 20110136523 | APPARATUS FOR CONTROLLING TRANSMISSION DATA AND METHOD THEREOF - A method for controlling data transmission in a station in a wireless communication network, the method including: receiving feedback information including error information including a signal to noise ratio (SNR) from a target station, the error information being measured by the target station; and controlling transmission parameters of the transmit data in a transmitting station based on the error information, wherein controlling the transmission parameters includes: increasing the transmit power when the SNR is lower than a predetermined value; initiating a beam-tracking process when the SNR is still lower than the predetermined value after increasing the transmit power; and decreasing a data transmission rate when the SNR is still lower than the predetermined value after initiating the beam-tracking process. | 06-09-2011 |
| 20110158198 | APPARATUS FOR TRANSMITTING/RECEIVING BEACON SIGNAL AND METHOD THEREOF - Methods and apparatuses of transmitting a beacon using fragmentation are disclosed. One of the methods includes configuring a beacon in a manner that a schedule block selected for a specific wireless device (deice) only is included in an information element by a coordinator and transmitting the configured beacon to the specific wireless station directionally. Accordingly, an overhead of a beacon can be reduced in a manner of transmitting information specified to a station using a directional beacon or transmitting the beacon by dividing information contained in the beacon into several fragments. | 06-30-2011 |
