Qualcomm Incorporated

Other

Rahul Tandra

Sameer Vermani

Bin Tian

Hemanth Sampath

Simone Merlin

Gwendolyn Denise Barriac

Yan Zhou

Santosh Paul Abraham

Lin Yang

Vincent Knowles Jones, Iv

Didier Johannes Richard Van Nee

Dung Ngoc Doan

Stephen Jay Shellhammer

Jialing Li Chen

Albert Van Zelst

Eric Pierre Rebeiz

Arjun Bharadwaj

Youhan Kim

Tao Tian

George Cherian

Maarten Menzo Wentink

Alfred Asterjadhi

Ning Zhang

James Simon Cho

Zhanfeng Jia

Qinghai Gao

Shu Du

Cong Shen

Didier Johannes Van Nee

Joseph Binamira Soriaga

Ravi Palanki

Ahmed Kamel Sadek

Alan Barbieri

Chin-Hung Chen

Venkatesan Nallampatti Ekambaram

Mohammad Hossein Taghavi Nasrabadi

Naveen Goela

Vincent Knowles Jones

Vincent Knowles Jones Iv

Iv Vincent Knowles Jones

A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the apparatus is configured to determine a target receiver power level for uplink transmissions received at the apparatus, to determine uplink power control information based on the determined target receiver power level for UL MU-MIMO transmission or UL OFDMA transmission, and to transmit a frame that includes the determined uplink power control information to a station scheduled by the apparatus for uplink transmission.

Power control in wireless networks

Methods, devices, and computer program products for improving training field design in packets with increased symbol durations are disclosed. In one aspect, a method of transmitting a packet on a wireless communication network is disclosed. The method includes transmitting a preamble of the packet over one or more space-time-streams, the preamble including one or more training fields configured to be used for channel estimation, the one or more training fields each comprising one or more symbols of a first symbol duration. The method further includes transmitting a payload of the packet over the one or more space-time-streams, the payload comprising one or more symbols of a second symbol duration, the second symbol duration greater than the first symbol duration.

Systems and methods for improvements to training field design for increased symbol durations

A method of wirelessly communicating a packet includes generating, at a first wireless device, a first packet including a first preamble decodable by a plurality of devices and a second preamble decodable by only a subset of the plurality of devices. The first preamble includes a first signal field. The second preamble includes a first training field. The method further includes transmitting the first packet concurrently with one or more second packets to be transmitted by wireless devices other than the first wireless device.

Methods and apparatus for packet acquisition in mixed-rate wireless communication networks

Certain aspects of the present disclosure provide techniques and apparatus for efficiently managing groups of stations (STAs) receiving simultaneous transmissions in a multiuser multiple-input multiple-output (MU-MIMO) scheme. One example method generally includes; for a first apparatus in a number of groups of apparatuses, allocating a first spatial stream position for each of at least one first group in the number of the groups; and transmitting a first unicast message to the first apparatus, wherein the first unicast message comprises an indication of the allocated spatial stream position for each of the at least one first group and, for each group in the number of the groups, an indication of a membership status, in the group, of the first apparatus.

Efficient group ID management for wireless local area networks (WLANs)

A method includes sending, from an access point of a wireless network to a first station of a plurality of stations of the wireless network, a packet including a preamble, a data portion, and trigger data that includes non-precoded, omni-direction data. The preamble precedes the data portion. The data portion precedes the trigger data. The trigger data is configured to cause the first station to perform a channel measurement responsive to receiving the packet. The access point sends beamformed data to one or more of the plurality of stations. At least one of the plurality of stations includes a mobile station configured to receive the beamformed data. The method also includes receiving, at the access point from the first station, feedback information that includes channel state information associated with the trigger data. The feedback information is received from the first station without polling individual stations of the plurality of stations.

Multi-user multiple-input multiple-output (MU-MIMO) feedback protocol

Systems, methods, and devices for wireless communication are disclosed herein. One aspect of the disclosure provides a method of transmitting to two or more wireless communication devices. The method includes transmitting a first section of a preamble according to a first format, the first section of the preamble containing information informing devices compatible with the first format to defer to the transmission, transmitting a second section of the preamble according to a second format, the second section of the preamble containing tone allocation information, the tone allocation information identifying two or more wireless communication devices; and transmitting data to the two or more wireless communication devices simultaneously, the data contained on two or more sub-bands.

Systems and methods for backwards-compatible preamble formats for multiple access wireless communication

Systems, methods, and devices for transmitting data are described herein. In some aspects, a method comprises generating a first message. The first message may comprise an allocation of a first station to a first frequency channel and a second station to a second frequency channel. The method further comprises transmitting the first message over the first frequency channel and the second frequency channel. The method further comprises transmitting, after transmission of the first message, a second message to the first station using the first frequency channel. The method further comprises transmitting, after transmission of the first message, a third message to the second station using the second frequency channel.

Systems and methods for downlink frequency domain multiplexing transmissions

An acknowledgment (ACK) frame has two parts: a group ACK part and a scheduling information part. In the group ACK part, an ACK/NACK indicator is included for a previous uplink (UL) transmission per station (STA). In the scheduling information part, information included for the following UL transmission per selected STA may comprise, for example, one or more of: a number of selected STAs, a media access control (MAC) address of each selected STA, a data transmission duration per selected STA, a transmission rate per selected STA, a request transmission duration, a pilot transmission order, or a STA transmission order.

Group scheduling and acknowledgement for wireless transmission

Systems, methods, and devices for high-efficiency wireless frequency division multiplexing are provided. A method includes exchanging, at an access point, at least one frame reserving a wireless medium with at least one of a first and second wireless device. The method further includes receiving a first communication on a first set of wireless frequencies from the first wireless device. The method further includes receiving a second communication, at least partially concurrent with the first communication, on a second set of wireless frequencies from the second wireless device. The method further includes transmitting at least one acknowledgment of the first and second communication. The first set and the second set are mutually exclusive subsets of a set of wireless frequencies available for use by both the first and second wireless device.

Methods and systems for frequency multiplexed communication in dense wireless environments

Techniques are described for wireless communication. A method for wireless communication at an access point may include identifying a number of stations to receive data from the access point, and generating a downlink frame to transmit the data to the identified number of stations. The downlink frame may include a first signaling field (e.g., a wireless local area network (WLAN) signaling field) directed to the identified number of stations. The first signaling field may include a first segment and a second segment. The first segment may include information common to each of the identified number of stations. The second segment may include at least one information block. Each information block may be separately encoded for each of the identified number of stations. The method may also include transmitting the downlink frame to the identified number of stations.

Techniques for transmitting and/or receiving high efficiency wireless local area network information

Methods and apparatuses for communicating over a wireless communication network are disclosed herein. One method includes selecting one of a plurality of allocation schemas for allocation of wireless resources to wireless communication devices. The method further includes generating an allocation message comprising an identifier of the selected allocation schema and one or more allocations of wireless resources according to selected allocation schema. The method further includes transmitting the allocation message to one or more wireless communication devices.

Allocation signaling for wireless communication networks

Methods and apparatuses for communicating over a wireless communication network are disclosed herein. One method includes forming a message that includes a plurality of data tones and one or more direct current (DC) protection tones. The method further includes setting a value for a data tone of the plurality of data tones to carry a data portion of the message. The method further includes setting a value for a DC protection tone of the one or more DC protection tones by repeating the value for the data tone as the value for the DC protection tone. The method further includes transmitting the message to one or more wireless communication devices utilizing the plurality of data tones and the one or more DC protection tones.

Systems and methods for tone plans for wireless communication networks

Methods and apparatus for providing wireless messages according to various tone plans can include a method of wireless communication. The method includes allocating a first allocation unit associated with a first tone plan having a first number of tones, for communication of one or more wireless messages by a wireless device. The method further includes allocating a second allocation unit, associated with a second tone plan having a second number of tones different from the first number of tones, for communication of one or more wireless messages by the wireless device. The method further includes selecting a combined tone plan for the wireless device based on at least the first tone plan and the second tone plan. The method further includes providing a wireless message for transmission by the wireless device according to the combined tone plan.

Systems and methods for improved communication efficiency in wireless networks

Growing community of inventors

San Diego, CA, United States of America

Rahul Tandra