Mediatek Singapore Pte. Ltd.

Newracom, Inc.

Atlas Global Technologies LLC

Mediatek Corporation

Other

Yongho Seok

James Chih-Shi Yee

Jianhan Liu

Kai Ying Lu

Chao-Chun Wang

Thomas Edward Pare

James June-Ming Wang

Thomas Edward Pare, Jr

Chih-Shi Yee

Chien-Fang Hsu

Gabor Bajko

Yujin Noh

Hung-Tao Hsieh

Shengquan Hu

Po-Yuen Cheng

Weisung Tsao

Chung-Ta Ku

Kaiying Lu

Yungping Hsu

Cheng-Yi Chang

Dae Won Lee

Sungho Moon

Gary Allen Anwyl

Shihchieh Lee

Young Hoon Kwon

Tianyu Wu

Minho Cheong

Shuling Feng

James Yee

Yen-Shuo Lu

Shen-Po Lin

James Chi-Shi Yee

Bajko Gabor

Thomas Edward Pare Jr

Jr Thomas Edward Pare

A station (STA) affiliated with a non-simultaneous-transmission-and-reception (NSTR) multi-link device (MLD) obtains a transmission opportunity (TXOP) on a first link of an NSTR link pair as a TXOP initiator while a medium synchronization delay timer of the STA is non-zero. STA determines that an intended TXOP responder has lost medium synchronization. The STA then transmits a control frame as an initial frame in the TXOP to the intended TXOP responder on the first link responsive to the determining.

Medium access recovery mechanism for non-simultaneous-transmission-and-reception peer multi-link devices

A method may include transmitting a downlink frame that is eliciting a response from a plurality of stations, the downlink frame including a first address field, receiving an uplink frame in response to the downlink frame, the uplink frame including a second address field, and receiving the uplink frame on a resource allocated by resource allocation information included in the downlink frame for an uplink multi-user transmission. The second address field is set to a value of the first address field when the downlink frame is of a first type or a value of an address associated with a station (STA) when the downlink frame is of a second type. The AP simultaneously receives uplink frames in response to the first type of downlink frame, where the AP simultaneously receives uplink data frames.

Receiver address field for multi-user transmissions in WLAN systems

A capability allocation method employed by a wireless fidelity (Wi-Fi) device includes: during association between the Wi-Fi device and another Wi-Fi device, setting up a first capability allocation of a first non-AP station (STA); and after the first non-AP STA associates with a first AP, changing the first capability allocation of the first non-AP STA in the absence of re-association. Each of the Wi-Fi device and the another Wi-Fi device includes a plurality of stations. The first AP is affiliated to the another Wi-Fi device. The first non-AP STA is affiliated to the Wi-Fi device.

Wireless fidelity device with dynamic capability allocation and related capability allocation method

A station (STA) associated with an access point (AP) receives, from the AP, an indication of an enhanced distributed channel access (EDCA) parameter set. The STA then updates one or more parameters of the EDCA parameter set with respect to a triggered transmission opportunity (TXOP) sharing (TXS) operation.

EDCA schemes for triggered TXOP sharing operations

A station (STA) receives an indication from a first access point (AP) on one of a plurality of links that is not a non-primary link among the plurality of links comprising at least a primary link and the non-primary link. Based on the indication, the STA determines that: (i) the first AP is affiliated with a non-simultaneous-transmit-and-receive (NSTR) AP multi-link device (MLD), and (ii) a second AP, as a neighbor AP of the first AP, is affiliated with the NSTR AP MLD and is operating on the non-primary link.

System parameters transmission scheme in wireless communications

Embodiments of the present invention provide an improved switching mechanism for multi-link devices that can perform frame exchanges using multiple spatial streams and automatically switch back to a listening mode on enabled links deterministically for improved throughput and reduced latency. Embodiments of the present invention are suitable for multi-link operations performed using a multi-radio device or a single-radio device.

Enhanced multi-link operation switching mechanisms

A method for a backoff process for uplink (UL) random access is provided. The method may include one or more of receiving, by a station (STA) eligible to participate in a UL MU transmission, a UL trigger frame indicating that one or more anonymous users are eligible to participate in the UL multiuser (MU) transmission, randomly selecting, by the STA, one or more resource units (RUs), and transmitting, by the STA, the UL MU transmission.

Method and apparatus for uplink multi-user transmission in a high efficiency wireless LAN

Multi-link operations can provide higher network throughput and improved network flexibility compared to traditional techniques for wireless communication. Embodiments of the present invention provide techniques for simultaneously transmitting frames of an A-MSDU over multiple links in a multi-link operation between wireless devices (e.g., a wireless STA and a wireless AP). The A-MSDU can be aggregated to satisfy capability requirements of the transmitting device and/or the receiving device. Moreover, the A-MSDU can be fragmented, for example, to satisfy an MPDU length requirement of the transmitting device and/or the receiving device. Some embodiments disclosed herein use a virtual mac address of an LLC sublayer interface to define parameters values of an A-MSDU sub-frame header (e.g., SA and DA) for routing the respective frame to the LLC sublayer interface of the receiving device.

Apparatus and methods for EHT multi-band A-MSDU operation

Embodiments of the present invention provide transmission schemes and methods that can assign multiple resource units (RUs) to a single wireless station using Aggregate Media Access Control Protocol Data Unit (A-MPDUs) in a flexible transmission scheme for the multi-RUs transmission. Embodiments of the present invention can send and receive data sing multiple resource units allocated to a single wireless STA. A 20 MHz segment and a 40 MHz segment on either side of a punctured portion of an 80 MHz segment can be treated as separate resource units (RUs), and the RUs can be assigned to the same wireless user/device. Each punctured 80 MHz segment can be interleaved separately. Different processes for encoding data and transmission schemes for transmitting the data are described herein according to embodiments of the present invention. Different transmission schemes can be used based on the size and number of the RUs allocated to an STA.

Aggregated resource unit transmission scheme for single station allocation in WLAN

Embodiments of the present invention are drawn to electronic systems capable of transmitting a group addressed frame that identifies an MLD according to an MLD MAC address. The group addressed frame can include an ARP request, for example, and can be transmitted by an AP MLD responsive to an individually addressed frame transmitted by a non-AP STA MLD associated with the AP MLD. The AP MLD can provide a proxy ARP service for associated non-AP STA MLDs.

Apparatus and methods for proxy address resolution protocol (ARP) service for multi-link operation

During association between an access point (AP) multi-link device (MLD) and a non-AP MLD, the non-AP MLD indicates a first capability allocation of a first combination of affiliated stations for a first combination of enabled links on the non-AP MLD, and indicates a second capability allocation of a second combination of affiliated stations for a second combination of enabled links on the non-AP MLD. For example, the first combination of affiliated stations and the second combination of affiliated stations have different numbers of stations in the non-AP MLD, and the first combination of enabled links and the second combination of enabled links have different numbers of enabled links. Hence, during the association between the non-AP MLD and the AP MLD, capabilities of different non-AP station combinations corresponding to different enabled link combinations supported by the non-AP MLD are signaled to the AP MLD.

Wi-Fi multi-link device for indicating capabilities of affiliated stations for different enabled link combinations during association and related capability indication method

A physical protocol data unit (PPDU) transmission method includes: setting parameters of each of a plurality of links for enabling the plurality of links to have different capacity for PPDU transmission, wherein parameters of one link are different from parameters of another link, and highest capacity supported by the one link is higher than highest capacity supported by the another link; aligning an ending time instant of transmission of a first PPDU transmitted via the one link with an ending time instant of transmission of a second PPDU transmitted via the another link through setting a content that is carried by the first PPDU transmitted via the one link; and transmitting PPDUs via the plurality of links, wherein one PPDU is transmitted via each of the plurality of links, and the PPDUs include the first PPDU and the second PPDU.

Physical protocol data unit transmission method employed by wireless fidelity multi-link device

Multi-link operations can provide higher network throughput and improved network flexibility compared to traditional techniques for wireless communication. Embodiments of the present invention provide a method of frame transmission that prevents constrained MLDs from transmitting and receiving frames on multiple links simultaneously using a novel and reliable group addressed frame transmission schedule for constrained MLDs. Group addressed frames are frames that are transmitted to several devices (e.g., broadcast) listening on a wireless link. It is important to carefully schedule group addressed frames for reception by MLDs to prevent IDC interference. According to some embodiments, group addressed frames are only transmitted when all MLDs listening on a wireless link are not transmitting data to prevent IDC interference.

Group addressed frame wireless transmission for constrained multi-link operation

A network device to function as an Access Point (AP) in a Wireless Local Area Network (WLAN) is provided. The AP is configured to acknowledge a data frame transmitted by a station (STA) in an uplink multi-user physical layer protocol data unit (UL MU PPDU). The AP includes one or more memories, a physical layer (PHY) processor, and a media access controller (MAC) processor. Each processor is coupled to the one or more memories, and is configured to receive the UL MU PPDU, decode an acknowledge (ACK) policy field within a data field of the UL MU PPDU, and determine whether an acknowledgement (ACK) policy indicated in the data field signals an implicit block acknowledgement (BlockAck) request. Responsive to a determination that the ACK policy indication signals an implicit acknowledgement policy, the AP is configured to transmit an ACK or BlockAck frame to the STA in either a single user (SU) or a multi user (MU) manner.

ACK policy for uplink and downlink MU PPDU

Embodiments of the present invention provide methods and devices for discovering a multi-link device (MLD) on a wireless network. One exemplary approach includes transmitting a beacon frame including a MAC address of an AP MLD on the wireless network. The AP MLD includes a plurality of STAs operating on a plurality of wireless links and associated with a plurality of wireless MAC addresses. A password element is generated using a preconfigured password and the MAC address of the AP MLD, and authentication is performed using the password element.

Growing community of inventors

San Jose, CA, United States of America

Yongho Seok