公开(公告)号：US10477452B1

公开(公告)日：2019-11-12

申请号：US15446656

申请日：2017-03-01

Applicant: Marvell International LTD.

Inventor： Jinjing Jiang ,  Liwen Chu ,  Lei Wang ,  Yakun Sun ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W4/00 ,  H04W40/24 ,  H04W72/04 ,  H04W84/10 ,  H04W84/12

Abstract: The present disclosure proposes systems and methods for performing spatial reuse using the following techniques at access points and stations. More specifically, the present disclosure relates to spatial reuse of medium with a spatial reuse opportunity announcement provided to STAs by an AP, opportunistic directional sensing performed by STAs, and a channel access method with a new backoff procedure performed by the STAs. An AP may provision a spatial reuse opportunity announcement in a beacon interval, and STAs may perform opportunistic directional sensing based on the announcement and perform channel access after performing opportunistic directional sensing.

公开(公告)号：US10314025B1

公开(公告)日：2019-06-04

申请号：US15422235

申请日：2017-02-01

Applicant: Marvell International Ltd.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Yakun Sun ,  Lei Wang ,  Jinjing Jiang ,  Hui-Ling Lou

IPC: H04W72/04 ,  H04L1/16

Abstract: Systems and methods are provided for performing multi-user transmissions across different segments of a transmission medium. A connection between a first access point and a plurality of stations is established; wherein a first station of the plurality of stations detects that a primary channel of communication between the first access point and the plurality of stations is being used for transmission by a second access point. The first access point allocates a transmission channel to the first station to communicate with the first access point. The first access point determines whether an acknowledgement from the first station is received. In response to determining that the acknowledgement has been received, the first access point allocates a resource unit to the first station using the transmission channel. In response to determining that the acknowledgement has not been received, the first access point reallocates the first station to a different transmission channel.

公开(公告)号：US10306603B1

公开(公告)日：2019-05-28

申请号：US15442398

申请日：2017-02-24

Applicant: Marvell International Ltd.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Lei Wang ,  Yakun Sun ,  Jinjing Jiang ,  Hui-Ling Lou

IPC: H04W28/02 ,  H04W72/04 ,  H04L12/833

Abstract: A method for transmitting a resource request for an uplink (UL) multi-user (MU) transmission is described. A High Throughput (HT) Control field that includes buffer information corresponding to media access control (MAC) protocol data units (MPDUs) that are queued for transmission by a first communication device is generated by the first communication device. The buffer information indicates a number of bytes for the MPDUs that are queued for transmission. A resource request MPDU that includes the HT Control field is generated by the first communication device. The resource request MPDU is transmitted by the first communication device to a second communication device via a wireless communication channel to request an allocation of radio resources for the UL MU transmission by the second communication device.

公开(公告)号：US10237891B1

公开(公告)日：2019-03-19

申请号：US15438732

申请日：2017-02-21

Applicant: Marvell International Ltd.

Inventor： Liwen Chu ,  Lei Wang ,  Jinjing Jiang ,  Hongyuan Zhang ,  Yakun Sun ,  Hui-Ling Lou

IPC: H04W74/00 ,  H04L29/08 ,  H04W88/10

Abstract: A method for identifying association identifiers (AIDs) for multiple basic service sets (BSSs) supported by a first communication device is described. A reference identifier that indicates a fixed mapping of AIDs to BSS identifiers (BSSIDs) in a multiple-BSSID set is identified by a first communication device. The multiple-BSSID set includes BSSIDs of a first and second BSS. A management frame that includes a maximum BSSID indicator that indicates a maximum size of the multiple-BSSID set, the reference identifier, and a transmitter address of the management frame is generated for a receiver of the management frame to derive a first AID corresponding to the first BSS and a second AID corresponding to the second BSS based on the maximum BSSID indicator, the reference identifier, and the transmitter address. The management frame is transmitted to at least one second communication device associated with one of the first BSS and the second BSS.

公开(公告)号：US10159043B1

公开(公告)日：2018-12-18

申请号：US15221438

申请日：2016-07-27

Applicant: Marvell International Ltd.

Inventor： Rui Cao ,  Yakun Sun ,  Hongyuan Zhang

IPC: H04L27/26 ,  H04W52/02 ,  H04L5/00 ,  H04W84/12

Abstract: The present disclosure includes systems and techniques relating to training sequences used in wireless communication systems. In some implementations, a transmission mode of a transmitting device is determined for transmitting a long training field (LTF) sequence for High Efficiency (HE) wireless local area network (WLAN) communication. Based on the transmission mode, candidate training sequences for the LTF sequence are constructed. Each candidate sequence includes a first number of base sequences and a second number of floating sequences, wherein the base sequences reuse an LTF sequence for Very High Throughput (VHT) WLAN communication. The candidate training sequences are constructed by varying values and locations of the floating sequences. A target training sequence is selected that has a desired peak-to-average power ratio (PAPR) value. The target training sequence is assigned to the transmitting device for transmitting the target training sequence in the LTF for the HE WLAN communication.

公开(公告)号：US10034227B1

公开(公告)日：2018-07-24

申请号：US15374066

申请日：2016-12-09

Applicant: Marvell International Ltd.

Inventor： Jinjing Jiang ,  Liwen Chu ,  Lei Wang ,  Yakun Sun ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04L1/00 ,  H04W48/12 ,  H04W72/04 ,  H04L5/00 ,  H04W84/12 ,  H04W88/08 ,  H04W72/12

Abstract: In aspects of access point association using trigger-based uplink single user transmission, a wireless network system includes a station device that detects an initial trigger frame communicated in the wireless network system, and the station device can communicate an association request to an access point to join the wireless network system. The access point can receive the association request from the station device and generate an association response as an acknowledgement to the association request. The acknowledgement aggregates an association response frame that includes an association identifier for the station device and a unicast trigger frame to initiate a trigger-based uplink single user (UL-SU) transmission from the station device. The access point can then communicate the acknowledgement to the station device.

公开(公告)号：US10009736B1

公开(公告)日：2018-06-26

申请号：US14639477

申请日：2015-03-05

Applicant: Marvell International LTD.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Hui-Ling Lou ,  Lei Wang ,  Yakun Sun ,  Jinjing Jiang

IPC: H04W4/06 ,  H04L12/741 ,  H04L29/06 ,  H04W12/04 ,  H04W40/02 ,  H04W56/00

CPC classification number: H04W4/06 ,  H04L45/74 ,  H04L63/0428 ,  H04W12/001 ,  H04W12/04 ,  H04W12/0401 ,  H04W40/02 ,  H04W56/0015 ,  H04W84/12

Abstract: A first access point including a physical layer (PHY) module, a parameter module and a medium access control (MAC) module. The parameter module is configured to, via the PHY module, negotiate a first parameter with a second access point. A basic service set of the first access point overlaps a basic service set of the second access point. The first basic service set includes stations. The second basic service set includes one or more of the stations. The MAC module is configured to receive a first frame. The PHY module is configured to, based on the first parameter and during a joint transmission of the first frame by the first access point and the second access point, transmit the first frame to the stations according to a first address while the second access point transmits the first frame to the one or more stations according to the first address.

公开(公告)号：US09979569B1

公开(公告)日：2018-05-22

申请号：US15611656

申请日：2017-06-01

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Mingguang Xu ,  Hongyuan Zhang

IPC: H04L25/03 ,  H04W84/12

CPC classification number: H04L25/03171 ,  H04L25/03012 ,  H04L25/061

Abstract: Systems and techniques relating to repeated signal detection are described. A described technique includes receiving a signal including first and second portions, the first portion includes first and second symbols; performing a determination, based on a first decision metric component and a second decision metric component, of whether the second symbol is a repeated version of the first symbol, the first decision metric component contributing to the determination that the second symbol is the repeated version of the first symbol, and the second decision metric component contributing to the determination that the second symbol is not the repeated version of the first symbol; and decoding the second portion of the signal in accordance with a first format or a second format. The first format is used if the first symbol is not repeated. The second format is used if the first symbol is repeated.

公开(公告)号：US09967127B1

公开(公告)日：2018-05-08

申请号：US15486154

申请日：2017-04-12

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Yan Zhang ,  Sudhir Srinivasa

IPC: H04L27/36 ,  H04L27/34

CPC classification number: H04L27/362 ,  H04L27/34 ,  H04L27/3405

Abstract: The present disclosure includes systems and techniques relating to an integer non-uniform constellation (NUC) high-order M-QAM. In some implementations, a scale factor is identified for a mapping of bit patterns into M constellation points of a NUC M-QAM, wherein M is no less than 1024; each of the M constellation points has respective real and imaginary coordinates; and the respective real and imaginary coordinates having respective decimal parts that are integer multiples of 2−n, with n being a non-negative integer less than 5. A bit pattern is received and mapped to integer real and imaginary coordinates of one of the M constellation points according to a mapping rule of the NUC M-QAM. The integer real and imaginary coordinates of the one of the M constellation points equal the scale factor multiplied with respective real and imaginary coordinates of the one of the M constellation points having respective decimal parts.

公开(公告)号：US09935794B1

公开(公告)日：2018-04-03

申请号：US14667448

申请日：2015-03-24

Applicant: Marvell International Ltd.

Inventor： Rui Cao ,  Xiayu Zheng ,  Hongyuan Zhang ,  Hui-Ling Lou ,  Liwen Chu ,  Yakun Sun

IPC: H04W52/54 ,  H04L27/26 ,  H04L25/02 ,  H04B7/0413 ,  H04W56/00

CPC classification number: H04L25/0226 ,  H04B7/0413 ,  H04W56/0035

Abstract: A method for use in a communication network is described. A plurality of data frames, transmitted simultaneously from respective ones of a plurality of second communication devices, are received at a first communication device via a multiple input, multiple output (MIMO) communication channel. A common carrier frequency offset (CFO) that is common to the data frames is estimated based on a legacy portion of a physical layer (PHY) preamble of the data frames. Each data frame is compensated based on the common CFO. Respective device-specific CFOs are estimated for channel estimation of the MIMO communication channel based on pilot tones of respective non-legacy training field portions of the data frames. The pilot tones have a non-overlapping allocation to the plurality of second communication devices and each device-specific CFO is specific to the corresponding second communication device. The respective non-legacy training field portions are compensated based on the corresponding device-specific CFO.