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公开(公告)号：US20210099220A1
公开(公告)日：2021-04-01
申请号：US17122024
申请日：2020-12-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jung Hoon Suh , Osama Aboul-Magd , Kwok Shum Au
IPC: H04B7/06 , H04B7/0495 , H04B7/0452 , H04L5/00
Abstract: In some examples, a first wireless device includes a network interface capable of communicating using 16 spatial streams; and at least one processor configured to allocate at least one spatial stream of the 16 spatial streams to a plurality of wireless devices, such that no wireless device of the plurality of wireless devices is allocated more than 4 spatial streams, and send a control information element indicating the allocation of the at least one spatial stream to the plurality of wireless devices.
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公开(公告)号：US10862637B2
公开(公告)日：2020-12-08
申请号：US16184002
申请日：2018-11-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jung Hoon Suh , Alireza Bayesteh , Osama Aboul-Magd , Kwok Shum Au
Abstract: In accordance with embodiments, methods and systems for data transmissions are disclosed. A station (STA) transmits an orthogonal frequency division multiplexing (OFDM) frame to an access point (AP). The OFDM frame comprises an OFDM symbol. The OFDM symbol comprises data tones and pilot tones. The total number of the data tones and the pilot tones in the OFDM symbol is divisible by 4. In some embodiments, the OFDM symbol may comprises 232 data tones, 8 pilot tones, 5 direct current (DC) tones, and 11 edge tones. The 232 data tones and 8 pilot tones of the OFDM symbol may be segmented to a set of 15 blocks for channel estimation between the AP and the STA.
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公开(公告)号：US20200153571A1
公开(公告)日：2020-05-14
申请号：US16184002
申请日：2018-11-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jung Hoon Suh , Alireza Bayesteh , Osama Aboul-Magd , Kwok Shum Au
Abstract: In accordance with embodiments, methods and systems for data transmissions are disclosed. A station (STA) transmits an orthogonal frequency division multiplexing (OFDM) frame to an access point (AP). The OFDM frame comprises an OFDM symbol. The OFDM symbol comprises data tones and pilot tones. The total number of the data tones and the pilot tones in the OFDM symbol is divisible by 4. In some embodiments, the OFDM symbol may comprises 232 data tones, 8 pilot tones, 5 direct current (DC) tones, and 11 edge tones. The 232 data tones and 8 pilot tones of the OFDM symbol may be segmented to a set of 15 blocks for channel estimation between the AP and the STA.
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公开(公告)号：US10567126B2
公开(公告)日：2020-02-18
申请号：US15685722
申请日：2017-08-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Osama Aboul-Magd , Jung Hoon Suh , Kwok Shum Au
Abstract: Embodiments are provided for WLAN Orthogonal Frequency Division Multiple Access (OFDMA) design of subcarrier groups and corresponding frame format. An embodiment method includes grouping a plurality of subcarriers for OFDMA transmissions into a plurality of subcarrier groups in accordance with a pre-defined grouping structure for subcarriers. The method further includes allocating the subcarrier groups to a plurality of corresponding users, and signaling, to the users, a map of the subcarrier groups to the corresponding users. According to the pre-defined grouping structure, each one of the subcarrier groups includes a plurality of consecutive subcarriers, a plurality of non-consecutive subcarriers, or a combination of consecutive and non-consecutive subcarriers according to a deterministic structure. The map is signaled using an OFDMA PPDU comprising a legacy preamble portion configured to silence legacy users that do not use OFDMA communications, an OFDMA preamble portion indicating the map, and a data portion.
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75.发明申请公开(公告)号：US20190230524A1
公开(公告)日：2019-07-25
申请号：US16372907
申请日：2019-04-02
Applicant: Huawei Technologies Co., Ltd.
Inventor： Osama Aboul-Magd , Jung Hoon Suh , Kwok Shum Au
Abstract: Embodiments are provided for enabling a coordinated beamforming (CB) mechanism in WLAN scenarios. In an embodiment, an AP sends a Feedback Request (FBR) frame to each one of the STAs in the OBSSs. The OBSSs comprise the STAs and a plurality of APs including the AP. The AP then receives a feedback frame from each STA of the STAs that participate in the CB transmission. The feedback frame includes channel state information (CSI) of the STA. The CSI enables the sending AP of performing CB on downlink. In an embodiment, the AP receives an initiate CB frame from a second AP initiating a CB transmission, and then sends an ACK frame to the second AP before sending the FBR frame to each one of the STAs. The AP starts the CB transmission with each one of the other APs that participate in the CB transmission.
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Patent Agency Ranking
公开(公告)号：US10299280B2
公开(公告)日：2019-05-21
申请号：US14961602
申请日：2015-12-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jung Hoon Suh , Osama Aboul-Magd , Kwok Shum Au , Sheng Sun
Abstract: System and method embodiments are provided for interference alignment in a wireless local area network (LAN) with an overlapping basic service set (OBSS). In an embodiment, a method includes instructing a first access point (AP) in the wireless LAN to broadcast a null data packet (NDP) sounding packet to a plurality of stations when no other AP is broadcasting, wherein the NDP sounding packet comprises a plurality of long training field (LTFs), and wherein a total number of LTFs is equal to a total number of transmission streams, receiving channel beamforming (BF) information and a signal plus interference to noise ratio (SINR) from each of the stations, wherein each of the stations computes the channel BF information and the SINR from sounding packets received from each of the APs in the wireless LAN, and determining a transmission schedule according to the SINRs and the channel BF information.
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公开(公告)号：US10285091B2
公开(公告)日：2019-05-07
申请号：US15643253
申请日：2017-07-06
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jung Hoon Suh , Yunbo Li , Kwok Shum Au , Osama Aboul-Magd , Sheng Sun
Abstract: A method for transmitting a frame includes generating an omni portion of the frame, the omni portion including a non-beamformed long training field and a signal field, the non-beamformed long training field including channel estimation information used to decode the signal field, the non-beamformed long training field configured to be transmitted through one of multiple antennas and multiple streams. The method also includes generating a multi-stream portion of the frame, the multi-stream portion including a data field and a multi-stream long training field, the multi-stream long training field including station-specific decoding information for station-specific data in the data field. The method further includes applying a beamforming indicator to the signal field of the omni portion, and transmitting the frame.
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公开(公告)号：US20190124549A1
公开(公告)日：2019-04-25
申请号：US16196880
申请日：2018-11-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jung Hoon Suh , Yunbo Li , Kwok Shum Au , Osama Aboul-Magd , Sheng Sun
Abstract: A method for transmitting a frame includes generating an omni portion of the frame, the omni portion including a non-beamformed long training field and a signal field, the non-beamformed long training field including channel estimation information used to decode the signal field, the non-beamformed long training field configured to be transmitted through one of multiple antennas and multiple streams. The method also includes generating a multi-stream portion of the frame, the multi-stream portion including a data field and a multi-stream long training field, the multi-stream long training field including station-specific decoding information for station-specific data in the data field. The method further includes applying a beamforming indicator to the signal field of the omni portion, and transmitting the frame.
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公开(公告)号：US10136353B2
公开(公告)日：2018-11-20
申请号：US15702345
申请日：2017-09-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Osama Aboul-Magd , Kwok Shum Au , Jung Hoon Suh
Abstract: Embodiments are provided herein for improving carrier aggregation for wireless networks. A plurality of bandwidth channels are assigned to a basic service set (BSS) for transmissions. Specifically, the bandwidth channels are divided into multiple channel segments corresponding to multiple primary or alternate primary channels. A channel segment possibly further includes one or more additional secondary channels. The locations of the primary or alternate primary channels that correspond to the channel segments of the BSS are then broadcasted in the network. When a station or AP receives this BSS information, it searches for an available primary or alternate primary channel of the BSS to begin transmission. Upon detecting an available primary channel or alternate primary channel that is not used for another transmission, the station or AP transmits data on the channel segment corresponding to the detected primary or alternate primary channel.
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公开(公告)号：US10063302B2
公开(公告)日：2018-08-28
申请号：US15361717
申请日：2016-11-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Sheng Sun , Yan Xin , Kwok Shum Au , Osama Aboul-Magd
CPC classification number: H04B7/0617 , H04B7/0695 , H04B7/088 , H04W76/10 , H04W88/02 , H04W88/08
Abstract: The AP can generate a distinctive 8 bit value, and fill the 8 most significant bits (MSBs) of the a 16 bit AID field to form a EDMG BSS AID. Beamforming can include a station performing a sector level sweep (SLS) process including transmitting, in sequence, a plurality of short sector sweep (SSW) frames to the other station using corresponding ones of the antenna sectors, and receiving, in sequence, a plurality of the short SSW frames from the other station, the short SSW frames having an addressing field format specifying a receiver address association ID (RA AID) and a transmitter address association ID (TA AID). The distinctive 8 bit value can be used as the AP AID.
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