Kt Corporation

Red Hat, Inc.

Yang Seok Jeong

Joo Young Kim

Hae Seok Yang

Disclosed is an active scanning method in a wireless LAN system. The active scanning method comprises: a step of transmitting a probe request frame via a predetermined channel; and a step of receiving, from an access point, a probe response frame corresponding to the probe request frame via a predetermined channel. The probe response frame includes main channel information on the access point. Thus, the access point can be quickly scanned.

Active scanning method in wireless LAN system

Disclosed are a method and a device for transmitting and receiving data in a wireless LAN system. A connection method performed in a terminal comprises the steps of: transmitting a probe request frame; receiving, from a main-access point, a probe response frame which is a response to the probe request frame; and transmitting, to the main-access point, an ACK frame which is a response to the probe response frame if it is determined that an operation is performed in an uplink relay mode on the basis of information included in the probe response frame. Thus, the wireless transmission efficiency of a wireless LAN system is capable of being improved.

Method and device for transmitting and receiving data in wireless LAN system

A method of accessing a channel in a wireless LAN system is disclosed. A method of accessing a channel in a terminal includes receiving TIM information included in a beacon transmitted by an access point, determining a channel access slot allocated to the terminal based on the TIM information, transmitting a data transmission request to the access point in the channel access slot, and receiving data transmission slot allocation information corresponding to the data transmission request from the access point. Accordingly, a time slot can be prevented from unnecessarily wasting.

Method of accessing channel in wireless local area network system

Disclosed is a method for changing an AID in a wireless LAN system. The method for changing an AID of a terminal by an access point comprises: a step of receiving an AID reassignment frame from the access point; a step of extracting an AID reassignment counter value from the AID reassignment frame; and a step of changing the AID of the terminal to the new AID included in the AID reassignment frame after the beacon periods of the access point indicated by the AID reassignment counter value extracted from the AID reassignment frame reception time have elapsed. Thus, a conflict between AIDs can be prevented.

Method for changing aid in wireless LAN system

Disclosed is a method for scanning for an access point in a wireless LAN system. An active scanning method comprises the steps of: transmitting a probe request frame to an access point; and receiving, from the access point, a probe response frame corresponding to the probe request frame. The probe response frame may include time information of a beacon transmitted after the probe response frame. Thus, the efficiency of a wireless channel can be improved in a wireless LAN system.

Method for scanning for access points in wireless LAN system

Provided is a method of communicating encoded traffic indication map (TIM) information that can reduce power consumption by reducing an unnecessary decoding process. A method of receiving, by a terminal, a TIM that is encoded in a hierarchical structure including a page, a block, and a sub-block includes receiving an encoded TIM from an access point (AP), extracting a page index from the encoded TIM, and extracting block bitmap information indicating whether blocks included in a page designated by the page index include a bitmap. Therefore, an unnecessary decoding process with respect to each delivery traffic indication map (DTIM) beacon can be reduced, thereby reducing power consumption of a low-power terminal.

Method for communicating encoded traffic indication map information

A channel access method in a wireless LAN system is disclosed. The channel access method for a terminal comprises the steps of: receiving a beacon transmitted from an access point; determining a channel access slot of a terminal allocated on the basis of the beacon; transmitting a data transmission request from the channel access slot to the access point; and receiving data transmission slot allocation information corresponding to the data transmission request from the access point. Thus, the present invention can reduce power consumption of the terminal.

Channel access method in wireless LAN system

Disclosed are an AID reassignment method capable of optimally operating a wireless LAN system, and an apparatus for performing the AID reassignment method. The method comprises the steps of: generating a reconnection request frame for an AID reassignment request; transmitting the generated reconnection request frame to the currently associated access point; and receiving a reconnection response frame including AID reassignment information from the access point. Thus, the AID of the currently associated terminal can be dynamically reassigned according to a change in the characteristics of the terminal, thus operating a wireless LAN system in an optimum manner.

AID reassignment method, and apparatus for performing said AID reassignment method

Disclosed are a method and an apparatus for transmitting data in a wireless LAN system. The method for transmitting data comprises the steps of: generating a master-beacon frame including identifier information of an end-point terminal connected to a relay device; and transmitting the master-beacon frame. As a result, the occurrence of a buffer overflow in the relay device can be prevented.

Method and apparatus for transmitting data in wireless LAN system

Disclosed are a channel access method and device in a wireless LAN system. The channel access control method comprises the steps of: receiving, from a main-access point, a main-beacon frame including information on an limited access section in which a channel access of an end terminal connected to a relay device is limited; generating a relay-beacon frame including the information on the limited access section; and transmitting the relay-beacon frame. Thus, the efficiency of using a wireless channel can be improved.

Channel access method and device in wireless LAN system

Disclosed are a method and an apparatus for transmitting data in a wireless LAN system. The method for transmitting data comprises the steps of: generating an activation request frame including end-point terminal identifier information for operating an end-point terminal connected to a relay device and in a wake mode; and transmitting the activation request frame to the relay device. As a result, the occurrence of a buffer overflow in the relay device can be prevented.

Disclosed are a method and an apparatus for transmitting data in a wireless LAN system. The method for transmitting data comprises the steps of: generating a discontinuation request frame for requesting discontinuation of transmitting a data frame from a master-access point to a relay device; and transmitting the discontinuation request frame to the master-access point. As a result, the occurrence of a buffer overflow in the relay device can be prevented.

A method of scanning an access point is disclosed. The method of scanning the access point includes creating a probe request frame including information created based on an identifier of an access point to be searched, and transmitting the probe request frame. Thus, it is possible to decrease the time and power consumed by a terminal when searching an access point.

Method of scanning access point

Disclosed is a method for alleviating a hidden node problem in a wireless local area network (WLAN) system. A method for detecting a hidden node comprises the steps of: configuring a first restricted access interval used for a plurality of terminals transmitting a hidden node detection frame; configuring a second restricted access interval used for a plurality of terminals transmitting a hidden node report frame generated on the basis of an HND frame; generating a beacon including configuration information of the first restricted access interval and configuration information of the second restricted access interval; and transmitting the generated beacon. Accordingly, a terminal in a hidden node relation can be detected.

Growing community of inventors

Seoul, South Korea

Yang Seok Jeong