Patent application number | Description | Published |
20100272043 | METHOD AND APPARATUS FOR TRANSMITTING RANGING CHANNEL IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a ranging channel in a wireless communication system is provided. A mobile station (MS) receives frequency resource allocation information of a ranging channel and allocates the ranging channel to one ranging subband on a frequency domain determined based on the frequency resource allocation information of the ranging channel. The MS transmits the ranging channel. The frequency resource allocation information of the ranging channel includes a cell identifier (ID) of a cell and the number of allocated subbands or the number of allocated subband contiguous resource units (CRUs). | 10-28-2010 |
20140099971 | APPARATUS AND METHOD FOR MEASURING LOCATION OF USER EQUIPMENT LOCATED INDOORS IN WIRELESS NETWORK - A method of measuring a location of a user equipment (UE) located indoors in a wireless network includes receiving signals from a plurality of access points (APs), performing training for machine learning using the received signals or information acquired from the received signals, setting a weight vector to be applied to a relevance vector machine (RVM) method using data subjected to the training for machine learning, and applying RVM regression to the set weight vector and measured strengths of the received signals and determining whether the signals received from the plurality of APs are line of sight (LOS) signals or non line of sight (NLOS) signals. | 04-10-2014 |
20150208330 | SCANNING METHOD AND APPARATUS IN WIRELESS LAN - A scanning method and apparatus in wireless LAN is disclosed. The method comprises determining, by an access point (AP), whether to accommodate a station (STA) conducting an initial link setup and transmitting, by the AP, a frame to the STA, the frame including scanning redirection information for the STA to switch other channel, other band, or a neighbor AP when the AP determines not to accommodate the STA. The scanning redirection information includes a band field and a channel field. The band field indicating a band in which the STA conducts the initial link setup when the STA conducts the initial link setup from current band to the other band. The channel field indicating a channel in which the STA conducts the initial link setup when the STA conducts the initial link setup from current channel to the other channel. | 07-23-2015 |
20150230093 | METHOD AND APPARATUS FOR ACCESSING INITIAL CHANNEL IN WIRELESS LAN - A method for accessing an initial channel by a STA can comprise the steps of: the STA receiving, via a first band from a multiband AP, a scanning frame comprising a neighboring AP information element, wherein the neighboring AP information element comprises information for a second band which is an operating band for the neighboring AP; the STA determining whether accessing the neighboring AP is possible on the basis of information comprised in the neighboring AP information element regarding an access network type of the neighboring AP operating in the second band; if access to the neighboring AP is possible, the STA transmitting an association request frame to the neighboring AP via the second band, wherein the access network type can comprise information regarding an access permission type of a neighboring AP. | 08-13-2015 |
20150237568 | METHOD AND APPARATUS FOR TRANSMITTING BACKHAUL LINK INFORMATION - Disclosed are a method and an apparatus for transmitting backhaul link information. A method for acquiring backhaul link state information for a station (STA) may comprise the steps of: an STA transmitting, to an access point (AP), a generic advertisement service (GAS) request frame requesting a backhaul link state information of the AP; the STA receiving, as a response to the GAS request frame, a GAS response frame comprising backhaul link state information, wherein the GAS request frame is a frame transmitted by an STA, before an authentication or an association procedure and after a scanning procedure of the AP, to request availability-related information of a network to be accessed by the STA, and the backhaul link state information can comprise information regarding the load of a backhaul link linking network apparatuses other the AP and the STA. | 08-20-2015 |
20150245283 | METHOD AND APPARATUS FOR ACTIVE SCANNING IN WIRELESS LAN - Disclosed are a method and an apparatus for active scanning in a WLAN. In the method for active scanning in the WLAN, a scanning STA, which has received from a different STA a first probe request frame, can start a probe timer and perform a CCA for detecting a channel state of a receiving channel. When the channel state is not busy until the probe timer reaches a minimum channel time, the scanning STA transmits to an AP from the receiving channel a second probe request frame, and when the channel state is busy until the probe timer reaches the minimum channel time and the scanning STA does not receive a probe reply frame, which includes at least the same information expected to be received based on scanning information, the scanning STA can transmit to the AP from the receiving channel the second probe request frame. | 08-27-2015 |
20150245382 | METHOD AND APPARATUS FOR ACCESSING CHANNEL IN WIRELESS LAN - Disclosed are a method and an apparatus for accessing a channel in a wireless LAN. A method for a station (STA) accessing a channel may comprise: a step of the STA receiving an access distribution element through a passive scanning frame; the STA selecting an access random variable based on the access distribution element; a step of the STA determining a minimum value of a passive scanning-specific competition window based on the access random variable; and the STA accessing the channel based on a backoff time that is determined based on the passive scanning-specific competition window. | 08-27-2015 |
20150341961 | METHOD AND APPARATUS FOR CHANNEL ACCESS IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system and, more particularly, to a method and apparatus for channel access in a wireless LAN system. To perform the abovementioned technical task, the method for performing channel access by a station (STA) in a wireless LAN system, according to one embodiment of the present invention, may comprise the steps of: deferring, if the channel is in an idle state, the transmission of a first frame until a second frame is detected from another station; and transmitting the first frame when the second frame is detected. | 11-26-2015 |
20150351018 | DISCOVERY METHOD AND DEVICE IN A WIRELESS COMMUNICATION SYSTEM - An embodiment of the present invention entails a method in which discovery is effected by a first device supporting a WiFi direct service, the method comprising the steps of: scanning usable channels; switching channel to a first channel; and effecting a procedure relating to probe sending and receiving, together with a second device on the first channel. Here, the first channel is determined from either a time stamp or the scanning result. | 12-03-2015 |
Patent application number | Description | Published |
20120044882 | APPARATUS AND METHOD FOR TRANSMITTING A POWER HEADROOM REPORT IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTI-CARRIERS - An apparatus and method for transmitting a power headroom report in a communication system supporting multi-carriers are disclosed, by which a user equipment is enabled to transmit the power headroom report. According to the present invention, a user equipment calculates a power headroom for each of at least one activated serving cell using a maximum transmission power of the user equipment for each of at least one activated serving cell and transmits the power headroom report including the power headroom for each of the at least one activated serving cell and the maximum transmission power of the user equipment for each of the at least one activated serving cell to a base station. In this case, the power headroom includes an information on power status of the user equipment for each of the at least one activated serving cell. | 02-23-2012 |
20120140677 | Method of Transmitting or Receiving Control Information in Wireless Communication System and Apparatus of the Same - A method of transmitting control information by a base station in a wireless communication system is provided. In the method, control information is broadcast, and negative-acknowledgement (NACK) information associated with the broadcasted control information is received from at least one User Equipment (UE), and then the control information is retransmitted to at least one UE in response to the NACK information. | 06-07-2012 |
20120155384 | METHOD FOR PARTITIONING CELL IDENTITIES ACCORDING TO CELL TYPE IN WIRELESS COMMUNICATION SYSTEM AND AN APPARATUS THEREFOR - A method of transmitting a cell type information, which is transmitted by a base station in a wireless communication system, is disclosed. The present invention includes broadcasting a first boundary point information (Z) between a cell identity of a public ABS (advanced base station) and a cell identity of a private ABS via an S-SFH SP3 (secondary-super frame header subpacket3), and broadcasting at least one second boundary point (K) information via an AAI-SCD (Advanced Air Interface_System Configuration Descriptor) message. In this case, the at least one second boundary point information (K) indicates a last index of cell identity corresponding to a specific ABS type. Further, an order of ABS types of the public ABS and an order of ABS types of the private ABS are pre-defined. | 06-21-2012 |
20130225173 | Method and Apparatus for Performing Handover Using Path Information in Wireless Communication System - A method for performing handover at a mobile terminal which moves along an established path in a wireless communication system includes transmitting an indicator indicating a handover type to a serving base station without performing measurement with respect to neighboring base stations and movement path information, receiving information about a handover target base station on a path generated based on the movement path from the serving base station, and determining whether handover to the handover target base station is performed according to movement. | 08-29-2013 |
20130225180 | Method and Apparatus for Performing Handover Using Path Information in Wireless Communication System - A method for performing handover at a mobile terminal which moves along an established path in a wireless communication system includes transmitting an indicator indicating a handover type to a serving base station without performing measurement with respect to neighboring base stations and movement path information and transmitting current position information of the mobile terminal to the serving base station. | 08-29-2013 |
20130230010 | Method and Terminal Apparatus for Transmitting a Power Status Report in a Wireless Communication System - Method of transmitting a power status report by a mobile station in a wireless communication system according to the present application comprises receiving at least one of an offset value of a data channel or an offset value of a control channel for an uplink power control from a base station; determining a base uplink transmit power level for at least one of the data channel or control channel based on at least one of the received offset value of the data channel or the received offset value of the control channel; and transmitting the determined base uplink transmit power level to the base station. | 09-05-2013 |
20130235779 | Method for a Terminal to Transmit Data in a Wireless Communication System, and a Device Therefor - The present application discloses a method for a terminal to transmit a signal in a wireless communication system. In more detail, the method includes transmitting uplink data to a base station at a data transmission period. The data transmission period includes at least one power-reduction period divided into an activation period and a deactivation period, wherein the uplink data are transmitted to the base station in the activation period. | 09-12-2013 |
20130235838 | METHOD FOR CONTROLLING UPLINK TRANSMISSION POWER FOR TRANSMITTING A PLURALITY OF CODEWORDS IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS A PLURALITY OF ANTENNAS, AND APPARATUS FOR PERFORMING THE METHOD - Disclosed are a method for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas, and a terminal apparatus for the method. The terminal apparatus for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas comprises a receiver for receiving, from a base station, a first transmission power control parameter including a first transmission power control indication value related to the uplink transmission power control; and a processor for determining uplink transmission power for transmitting said plurality of codewords based on the amount of information for each unit resource for each code word, if said first transmission power control indication value is not zero, wherein said first transmission power control indication value may be a value corresponding to each codeword. | 09-12-2013 |
20130295983 | METHOD FOR DETERMINING TRANSMISSION POWER FOR TRANSMITTING UPLINK SIGNALS BETWEEN TERMINALS IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS TERMINAL-TO-TERMINAL COMMUNICATION, AND APPARATUS THEREFOR - Disclosed is a method for determining transmission power for transmitting uplink signals between terminals in a wireless communication system that supports terminal-to-terminal communication, and an apparatus therefor. A method in which a first terminal determines transmission power for transmitting an uplink signal to a second terminal in a wireless communication system that supports terminal-to-terminal communication comprises the following steps: estimating a channel state based on a second terminal-specific signal received from the second terminal; transmitting the estimated channel information to a base station; receiving a message, including information on a transmission power control factor, from the base station or from the second terminal; and determining transmission power for transmitting an uplink signal to the second terminal based on the received message. | 11-07-2013 |
20130329689 | METHOD AND APPARATUS FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM - A method for transmitting data from a first User Equipment (UE) in a wireless communication system is provided. In the method, the first UE receives uplink data of a second UE from the second UE on a first uplink subframe of an Nth frame and transmits the received uplink data of the second UE to a base station on a first uplink subframe of an (N+1)th frame and then receives feedback information associated with the transmitted uplink data of the second UE from the base station. | 12-12-2013 |
Patent application number | Description | Published |
20150327313 | METHOD AND DEVICE FOR SESSION INITIALIZATION IN WIRELESS COMMUNICATION SYSTEM - One embodiment of the present invention is a method for session initialization in which a first device for supporting a Wi-Fi direct service initializes a send session with a second device. The method for session initialization comprises the steps of: establishing an application service platform (ASP) session; and initializing the send session using a uniform resource locator (URL) related to a device description, wherein the URL related to the device description is acquired prior to the completion of the establishment of the ASP session. | 11-12-2015 |
20150334638 | SERVICE DISCOVERY METHOD AND DEVICE IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a service discovery method and device in a wireless LAN system. A service discovery method in a wireless LAN system according to one embodiment of the present invention can comprise: transmitting, by a request device, a service discovery request frame to a response device; and receiving, by the request device, a service discovery response frame, which comprises service information of the response device and service information of each of one or more other devices, from the response device. The one or more other devices can comprise a device which does not belong to the same group as the response device. | 11-19-2015 |
20150334654 | CHANNEL ACCESS METHOD AND APPARATUS IN WIRELESS LAN SYSTEM - The present invention relates to a method for converting, by a station (STA), a non-traffic indication map (TIM) mode into a TIM mode and performing channel-accessing. According to the present invention, a station that does not receive a TIM or DTIM is to be switched so as to operate between a wakeup mode and a sleep mode for power saving. In order to set an efficient wakeup time, the STA may listen to beacon frame information from an AP and access a channel through information included in the beacon frame information. | 11-19-2015 |
20150341849 | METHOD FOR SEARCHING FOR SERVICE OR ADVERTISING IN DIRECT COMMUNICATION SYSTEM AND DEVICE THEREFOR - The present invention relates to a wireless communication system, and a method for executing a service search and an advertisement. To this end, the method by which a first wireless device performs a service search comprises the steps of: transmitting a probe request frame which includes a hash value; receiving, from a second wireless device, a probe response frame which includes first service information corresponding to the hash value; transmitting a service search request frame which includes a search word to the second wireless device; and receiving, from the second wireless device, a service search response frame which includes second service information corresponding to the search word, wherein if a preset symbol is attached to the search word, the second service information can include at least one service name having the search word as a prefix. | 11-26-2015 |