Patent application number | Description | Published |
20160007325 | DOWNLINK PHYSICAL LAYER PROTOCOL DATA UNIT FORMAT IN A HIGH EFFICIENCY WIRELESS LAN - The present invention provides a new downlink frame format to support MU-MIMO and OFDMA, and methods, apparatuses, etc. therefor. In an aspect of the present invention, a method for transmitting data to a plurality of STAs by an AP in a WLAN may include generating a HE-LTF field for the plurality of STAs, and transmitting a PPDU frame to the plurality of STAs, the PPDU frame including the HE-LTF field and data for the plurality of STAs. The data for the plurality of STAs may be transmitted to different STA on each of a plurality of subchannels, and a starting point of the HE-LTF field may be same across the plurality of STAs and an end point of the HE-LTF field may be same across the plurality of STAs. | 01-07-2016 |
20160007342 | PHYSICAL LAYER PROTOCOL DATA UNIT FORMAT IN A HIGH EFFICIENCY WIRELESS LAN - The present invention provides a new uplink PPDU frame format to support MU-MIMO and OFDMA, and methods, apparatuses, etc. therefor. In an aspect of the present invention, a method by a STA for transmitting an UL PPDU frame to an AP simultaneously with one or more other STAs in a WLAN may include receiving a frame including a parameter for the PPDU frame from the AP; and participating in UL MU PPDU frame transmission based on the parameter. | 01-07-2016 |
20160029373 | DOWNLINK ACKNOWLEDGMENT IN RESPONSE TO UPLINK MULTIPLE USER TRANSMISSION - The present invention provides a method and apparatus for transmitting a downlink ACK in response to an uplink multi-user transmission in a HE WLAN. In an aspect of the present invention, a method for transmitting an ACK in response to uplink data received from a plurality of STAs by an AP in a WLAN may be provided. The method may include transmitting a frame triggering transmission of a plurality of uplink data units from the plurality of STAs to the plurality of STAs, receiving a PPDU frame including a plurality of uplink data units from the plurality of STAs a predetermined IFS after transmitting the trigger frame, and transmitting an ACK frame including ACKs for the plurality of data units from the plurality of STAs. | 01-28-2016 |
20160043855 | DYNAMIC INTER-FRAME SPACE PROCESSING IN HIGH EFFICIENCY WIRELESS LAN - The present invention relates to a transmission and receiving method and apparatus using a dynamically determined Inter-Frame Space (IFS) in a Wireless Local Area Network (WLAN). According to one aspect of the present invention, a method for processing a received frame by a Station (STA) in a WLAN may include receiving a first frame including downlink data for a plurality of STAs, if the received first frame has no error, transmitting a second frame including an ACKnowledgement (ACK) of the STA simultaneously with ACKs of one or more other STAs, and if the received first frame has an error, performing carrier sensing using a variably determined IFS. | 02-11-2016 |
20160044635 | INTERLEAVER FOR PHYSICAL LAYER PROTOCOL DATA UNIT IN A HIGH EFFICIENCY WIRELESS LAN - The present invention provides a method and apparatus for transmitting using an interleaver applied to a PPDU in a HE WLAN. In an aspect of the present invention, a method for transmitting data to a plurality of STAs through transmission channel by an AP in a WLAN system, wherein the transmission channel is divided into a plurality of subchannels which are allocated to the plurality of STAs respectively, the method may include interleaving a plurality of data units for the plurality of STAs based on characteristics of the plurality of subchannels allocated to the plurality of STAs to generate a plurality of interleaved data units; and transmitting, through the transmission channel, a Physical layer Protocol Data Unit (PPDU) frame including the plurality of interleaved data units respectively on the plurality of subchannels to the plurality of STAs. | 02-11-2016 |
20160050634 | TRANSMISSION POWER CONTROL FOR DEVICE IN HIGH EFFICIENCY WIRELESS LAN - The present invention relates to transmission power control for a device operating in a Wireless Local Area Network (WLAN) system, and a transmission and reception method and apparatus using the transmission power control. According to an aspect of the present invention, a method for transmitting an uplink frame to an Access Point (AP) by a Station (STA) in a WLAN system may include receiving first transmission power control information and second transmission power control information from the AP, if a type related to the uplink frame is a first type, determining a maximum transmission power based on the first transmission power control information, if the type related to the uplink frame is a second type, determining a maximum transmission power based on the second transmission power control information, and transmitting the uplink frame based on the determined maximum transmission power. The first type and the second type may correspond to different access schemes for uplink transmission. | 02-18-2016 |
20160050659 | RATE DETERMINATION IN HIGH EFFICIENCY WIRELESS LAN - The present invention relates to a method and apparatus for determining a transmission rate in a Wireless Local Area Network (WLAN). According to one aspect of the present invention, a method for receiving an uplink frame from a Station (STA) by an Access Point (AP) in a WLAN may be provided. The method may include transmitting to the STA a downlink frame eliciting the uplink frame, and receiving the uplink frame from the STA at a rate determined based on whether the type of the uplink frame is a single user type or a multi-user type. | 02-18-2016 |
20160056930 | PHYSICAL LAYER PROTOCOL DATA UNIT FORMAT APPLIED WITH SPACE TIME BLOCK CODING IN A HIGH EFFICIENCY WIRELESS LAN - The present invention relates to a method and apparatus for transmitting and receiving signals using a Physical layer Protocol Data unit (PPDU) format to which Space-Time Block Coding (STBC) is applied in a Wireless Local Area Network (WLAN). According to one aspect of the present invention, a method for transmitting data to a plurality of Stations (STAs) on a transmission channel by an Access Point (AP) in a WLAN may be provided. The transmission channel may be divided into a plurality of subchannels allocated to the plurality of STAs. The method may include generating a High Efficiency-Long Training Field (HE-LTF) field having a length determined based on whether Space-Time Block Coding (STBC) is applied to the plurality of subchannels, and transmitting a Physical layer Protocol Data Unit (PPDU) frame including the HE-LTF field and a plurality of data units for the plurality of STAs to the plurality of STAs. | 02-25-2016 |
20160057657 | PHYSICAL LAYER PROTOCOL DATA UNIT FORMAT INCLUDING PADDING IN A HIGH EFFICIENCY WIRELESS LAN - The present invention relates to a Physical layer Protocol Data unit (PPDU) format including a padding. According to one aspect of the present invention, a method for transmitting data to a plurality of stations on a transmission channel by an Access Point in a WLAN may be provided. The transmission channel may be divided into a plurality of subchannels allocated to the plurality of stations. The method may include generating a padding having a length individually for each of one or more subchannels to which paddings are applied among the plurality of subchannels, the length of the padding making transmissions end simultaneously on the plurality of subchannels, and transmitting a PPDU frame including a data unit without the padding or a data unit added with the padding for each of the plurality of subchannels to the plurality of stations on the transmission channel. | 02-25-2016 |
20160088602 | UPLINK ACKNOWLEDGMENT RESPONSE TO DOWNLINK MULTIPLE USER TRANSMISSION - The present invention provides a method and apparatus for transmitting an Uplink (UL) ACKnowledgement (ACK) in response to a Downlink (DL) Multi-User (MU) transmission in a Wireless Local Area Network (WLAN). According to one aspect of the present invention, a method for transmitting an ACK in response to a DL data transmission from an Access Point (AP) by a Station (STA) in a WLAN may be provided. The method may include receiving, from the AP, a downlink frame including downlink data for the STA and downlink data for one or other STAs, and transmitting an ACK frame to the AP in response to the downlink data for the S_TA, simultaneously with transmission of ACK frames from the one or more other STAs. The ACK frames transmitted by the STA and the one or more other STAs may have the same length. | 03-24-2016 |
20160100396 | BEAMFORMED TRANSMISSION IN HIGH EFFICIENCY WIRELESS LAN - The present invention relates to a method and apparatus for beamformed transmission in a wireless local area network. According to one aspect of the present invention, a method for transmitting a Physical layer Protocol Data Unit (PPDU) frame to a plurality of stations (STAs) by an Access Point (AP) in a wireless local area network may be provided. The method may include transmitting a SIGNAL field of the PPDU frame, the SIGNAL field including beamforming information indicating whether beamforming is applied to respective data units of the PPDU frame, and transmitting the data units of the PPDU frame, the data units being individually beamformed or not beamformed according to the beamforming information. | 04-07-2016 |
20160105836 | DYNAMIC RESOURCE ALLOCATION IN A HIGH EFFICIENCY WIRELESS LAN - The present invention relates to a method and apparatus for dynamically allocating resources in a High Efficiency WLAN (Wireless Local Area) (HEW). According to one aspect of the present invention, a method for resource switching in a WLAN may be provided. The method may include receiving, by a station (STA) from an access point (AP), a downlink multiple user (DL MU) frame on a resource indicated by first resource allocation information, the DL MU frame including the first resource allocation information and second resource allocation information for a next MU frame following the DL MU frame, and processing, by the STA, the next MU frame based on a resource indicated by the second resource allocation information. | 04-14-2016 |
20160113009 | BANDWIDTH DETERMINATION FOR MULTIPLE USER TRANSMISSION IN A HIGH EFFICIENCY WIRELESS LAN - The present disclosure relates to a method and apparatus for determining a bandwidth for Multi-User (MU) transmission in a High Efficiency WLAN (HEW). According to one aspect of the present disclosure, a method for transmitting by a Station (STA) to an Access point (AP) an uplink Physical layer Protocol Data Unit (PPDU) frame in a WLAN may be provided. The method may include receiving a trigger frame including bandwidth information, the trigger frame eliciting a transmission of the uplink PPDU frame including a data unit of the STA and at least one data unit of at least one other STA, and transmitting the data unit of the STA in the uplink PPDU frame, based on an available bandwidth of the STA and a bandwidth indicated by the bandwidth information included in the trigger frame. | 04-21-2016 |
20160113034 | METHOD AND APPARATUS FOR UPLINK CHANNEL ACCESS IN A HIGH EFFICIENCY WIRELESS LAN - The present disclosure relates to a method and apparatus for uplink channel access in a High Efficiency WLAN (HEW). According to one aspect, a method for transmitting an uplink frame by a station (STA) to an access point (AP) in a wireless local area network may be provided. The method may include receiving from the AP a trigger frame for eliciting an uplink transmission from the STA, transmitting to the AP the uplink frame according to a type of the trigger frame, wherein when the uplink frame is transmitted in an uplink multiple user (MU) transmission, the uplink frame includes a padding added by the STA such that transmissions from a plurality of STAs including the STA in the uplink MU transmission end at a same time indicated by the trigger frame, and receiving from the AP a frame in response to the uplink MU transmission a predetermined time after an end of the uplink MU transmission. | 04-21-2016 |