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公开(公告)号：US10397933B1
公开(公告)日：2019-08-27
申请号：US15849213
申请日：2017-12-20
Applicant: Marvell International Ltd.
Inventor： Hua Mu , Xiayu Zheng , Hongyuan Zhang
Abstract: The present disclosure describes apparatuses and methods of interference cancellation for receivers with multiple antennas. In some aspects, an interference packet transmitted by an interfering device of a wireless environment is received via multiple antennas of a device. Based on the interference packet, an interference channel that describes interference in the wireless environment is estimated. The device then receives an intended packet through the wireless environment in which the interfering device is operating. At least a portion of interference received with the intended packet, such as interference caused by other interfering packets, is cancelled using the interference channel. By so doing, a receiver may reduce effects of interfering packets or signals of the wireless environment to improve receive performance (e.g., bit-error rate) for packets that are intended for reception by the device.
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公开(公告)号：US10383054B1
公开(公告)日：2019-08-13
申请号：US16055869
申请日：2018-08-06
Applicant: Marvell International Ltd.
Inventor： Hongyuan Zhang , Mingguang Xu , Yakun Sun
Abstract: Accordingly, systems and methods for managing power when the number of training and data tones are increased in a wireless communications system are provided. An L-SIG field is generated that includes a set of data and pilot tones, wherein the pilot tones are inserted between the data tones in the set of data and pilot tones. A plurality of training tones is added to the L-SIG field before and after the set of data and pilot tones. A symbol is generated that includes the L-SIG field, an L-LTF field, and a data field, wherein the training tones of the L-SIG field provide channel estimates for the data field. Power of the L-LTF field is managed relative to power of the L-SIG field in the generated symbol in a time domain.
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公开(公告)号：US10251065B1
公开(公告)日：2019-04-02
申请号：US15291818
申请日：2016-10-12
Applicant: Marvell International Ltd.
Inventor： Jinjing Jiang , Liwen Chu , Yakun Sun , Lei Wang , Hongyuan Zhang , Hui-Ling Lou
IPC: H04W16/02 , H04W52/36 , H04L12/741 , H04W84/12
Abstract: A first communication device maintains respective spatial reuse information for respective pairs of second communication devices, the respective spatial reuse information for determining whether the first communication device can simultaneously transmit during respective transmissions between the respective pairs of second communication devices. The first communication device determines whether the first communication device can transmit a spatial reuse transmission to a third communication device simultaneously with one or more ongoing transmissions between one or more pairs of second communication devices using the spatial reuse information. Responsive to determining that the first communication device can transmit the spatial reuse transmission, the first communication device transmits a packet to the third communication device simultaneously with the one or more ongoing transmissions between one or more pairs of second communication devices.
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公开(公告)号：US10244536B1
公开(公告)日：2019-03-26
申请号：US15692979
申请日：2017-08-31
Applicant: Marvell International Ltd.
Inventor： Jinjing Jiang , Liwen Chu , Lei Wang , Hongyuan Zhang , Hui-Ling Lou
Abstract: In a method for determining whether a communication device can transmit via a first communication channel, the communication device receives a packet via a second communication channel and sets a network allocation vector (NAV) timer corresponding to the second communication channel using duration information included in the header of the packet. The communication device determines whether the second communication channel overlaps in frequency with a first communication channel. If the second communication channel overlaps the first communication channel, the communication device is not permitted to transmit via the first communication channel when the NAV timer is not zero. If the second communication channel does not overlap the first communication channel, the communication device is permitted to transmit via the second communication channel even when the NAV timer is not zero.
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公开(公告)号：US10243711B1
公开(公告)日：2019-03-26
申请号：US15334550
申请日：2016-10-26
Applicant: Marvell International Ltd.
Inventor： Rui Cao , Xiayu Zheng , Hongyuan Zhang , Hui-Ling Lou , Liwen Chu , Yakun Sun
Abstract: A first communication device receives, from a second communication device, a synchronization frame having an allocation indicator that indicates a non-overlapping allocation of pilot tones. The first communication device generates a first data frame that comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols of a non-legacy training field portion, the plurality of OFDM symbols including only pilot tones corresponding to the non-overlapping allocation of pilot tones. The first communication device transmits, in response to the synchronization frame and via a multiple input, multiple output (MIMO) communication channel, the first data frame to the second communication device simultaneously with a transmission of a second data frame by a third communication device via the MIMO communication channel, wherein corresponding OFDM symbols of respective non-legacy training field portions of the first data frame and the second data frame include non-overlapping pilot tones according to the non-overlapping allocation.
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Patent Agency Ranking
公开(公告)号：US10225338B1
公开(公告)日：2019-03-05
申请号：US14687705
申请日：2015-04-15
Applicant: Marvell International Ltd.
Inventor： Liwen Chu , Sagar Tamhane , Sarang Shrikrishna Wagholikar , Hongyuan Zhang , Hui-Ling Lou
Abstract: A method for discovering devices in a peer to peer (P2P) wireless communication network is described. During a search state of a first communication device, a probe request is transmitted by the first communication device on a first channel included in a plurality of channels. During the search state, a probe response transmitted by a second communication device on the first channel is received by the first communication device. In response to the probe response, a ranging exchange with the second communication device is performed by the first communication device.
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公开(公告)号：US10212730B1
公开(公告)日：2019-02-19
申请号：US15488162
申请日：2017-04-14
Applicant: Marvell International Ltd.
Inventor： Liwen Chu , Yakun Sun , Lei Wang , Jinjing Jiang , Hongyuan Zhang , Hui-Ling Lou
Abstract: Systems and techniques relating to partial AID length change notification include: transmitting, to one or more wireless devices within a wireless communication system, a first frame including an indication of a partial association identifier (AID) length and an indication of a target time at which the one or more wireless devices within the wireless communication system will utilize the indicated partial AID length; and transmitting, to the one or more wireless devices within a wireless communication system, one or more additional frames before the target time is reached, where each of the one or more additional frames include the indication of the partial AID length and the indication of the target time.
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公开(公告)号：US10201009B1
公开(公告)日：2019-02-05
申请号：US15236230
申请日：2016-08-12
Applicant: Marvell International Ltd.
Inventor： Lei Wang , Liwen Chu , Jinjing Jiang , Yakun Sun , Hongyuan Zhang , Hui-Ling Lou
Abstract: A channel access timer at a communication device is set to a duration for which a shared communication medium is expected to be busy in a basic service set (BSS) heard by the communication device. The channel access timer is counted down. Before the channel access timer reaches zero, respective indications of respective contention free period durations in multiple basic service sets (BSSs) heard by the communication device are recorded in a BSS record maintained by the communication device. Recording the respective indications includes recording, for each particular BSS of the multiple BSSs, (i) an identifier of the particular BSS and (ii) an offset value corresponding to an offset of an end of a contention free period in the particular BSS from an end of a contention free period in the BSS based on which the channel access timer is currently set at the communication device.
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公开(公告)号：US10187497B1
公开(公告)日：2019-01-22
申请号：US15379027
申请日：2016-12-14
Applicant: Marvell International Ltd.
Inventor： Yakun Sun , Hongyuan Zhang , Lei Wang , Liwen Chu , Jinjing Jiang , Hui-Ling Lou
Abstract: Embodiments described herein provide a method for providing a physical-layer control mechanism in accordance with a wireless local area network communication protocol allowing a high data rate. At a wireless receiver, a physical-layer data frame may be received compliant with the wireless local area network communication protocol. When the physical-layer data frame includes only one data unit, a length of an enhanced directional multi-gigabit header from a header associated with the physical-layer data frame may be obtained, and the enhanced directional multi-gigabit header from the physical-layer data frame may be enhanced based on the length. When the physical-layer data frame includes more than one data unit, a first length of a first data unit may be obtained from a first header associated with the first data unit, and the first data unit may be identified from the data frame based on the first length.
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公开(公告)号：US10181966B1
公开(公告)日：2019-01-15
申请号：US15143075
申请日：2016-04-29
Applicant: Marvell International Ltd.
Inventor： Yakun Sun , Hongyuan Zhang
Abstract: A communication device determines a format according to which a data unit is to be generated, and selects a pilot sequence to be used for generating the data unit. The pilot sequence is selected from a plurality of pilot sequences corresponding to a plurality of data unit formats, and the pilot sequence is selected based on the determined format. The communication device generates the data unit to include the selected pilot sequence, and transmits the data unit.
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