公开(公告)号：US10979885B1

公开(公告)日：2021-04-13

申请号：US16422786

申请日：2019-05-24

Applicant: Amazon Technologies, Inc.

Inventor： Ashish Kumar Shukla ,  Kun Ting Tsai ,  Karim Abulmakarem Mohamed Khalil ,  Burak Varan ,  Lori Yoshida ,  Kiran Kumar Edara

IPC: H04W8/00 ,  H04W84/18 ,  H04W40/24 ,  H04W72/04 ,  H04W74/08 ,  H04L5/00

Abstract: Network hardware devices organized in a wireless mesh network (WMN). A first mesh network device performs a three-stage discovery protocol; in a first stage, a discovery scan uses a first radio to find a set of neighbor devices in proximity; in a second stage, a discovery locate probe process is performed on a secondary discovery channel that is from a same frequency band group as a first DFS channel; in a third stage, a CAC is performed via the first DFS channel and, after the CAC, a neighbor peering request is sent and a neighbor peering response is received from a second mesh network device via a second radio. The neighbor peering response confirms establishment of a first communication channel between the second radio of the first mesh network device and a radio of the second mesh network device over the first DFS channel.

公开(公告)号：US10230636B2

公开(公告)日：2019-03-12

申请号：US15188841

申请日：2016-06-21

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Sheung Mei Chan ,  Andrew David Price ,  Varadarajan Gopalakrishnan ,  Yi Zhu ,  Lori Yoshida

IPC: H04W40/24 ,  H04L12/741 ,  H04L29/12 ,  H04W40/02 ,  H04L12/755

Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes a first radio and a second radio coupled to a processing device. The processing device receives a request from a client consumption device via the first radio and determines a destination for the request as a second mesh network device. The processing device access a master routing table to determine that the second radio is to forward the request and forwards the request to the second radio. The second radio accesses a local routing table at the second radio to determine that a radio of a third mesh network device is a next-hop mesh network device in a first path to the second mesh network device. The second radio sends the request to the radio of the third mesh network device.

公开(公告)号：US10219142B2

公开(公告)日：2019-02-26

申请号：US15595479

申请日：2017-05-15

Applicant: Amazon Technologies, Inc.

Inventor： Lori Yoshida ,  Varadarajan Gopalakrishnan ,  Sheung Mei Chan ,  Avinash Joshi ,  Andrew David Price ,  Jungtao Liu

IPC: H04W8/00 ,  H04W4/80 ,  H04W76/14 ,  H04B7/04 ,  H04W84/18

Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes multiple radios. A processing device of a first network hardware device receives, via a first radio, a beacon frame from a second mesh network device, scans, via a second radio, for a second mesh frame of the second mesh network device, and receives the mesh frame. The processing device determines a first sector identifier that identifies an antenna from which the mesh frame is transmitted, a first signal strength indicator value corresponding to the mesh frame, an unused radio and an unused channel of the second mesh network device. The processing device sends a first message to the unused radio of the second mesh network device on the unused channel via the second radio, receives a second message, and configures the multiple radios to communicate with the second mesh network device.

公开(公告)号：US20180331914A1

公开(公告)日：2018-11-15

申请号：US15595479

申请日：2017-05-15

Applicant: Amazon Technologies, Inc.

Inventor： Lori Yoshida ,  Varadarajan Gopalakrishnan ,  Sheung Mei Chan ,  Avinash Joshi ,  Andrew David Price ,  Jungtao Liu

IPC: H04L12/24 ,  H04W4/00 ,  G08C15/02 ,  H04W84/18

CPC classification number: H04W8/005 ,  H04B7/04 ,  H04W4/80 ,  H04W76/14 ,  H04W84/18

Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes multiple radios. A processing device of a first network hardware device receives, via a first radio, a beacon frame from a second mesh network device, scans, via a second radio, for a second mesh frame of the second mesh network device, and receives the mesh frame. The processing device determines a first sector identifier that identifies an antenna from which the mesh frame is transmitted, a first signal strength indicator value corresponding to the mesh frame, an unused radio and an unused channel of the second mesh network device. The processing device sends a first message to the unused radio of the second mesh network device on the unused channel via the second radio, receives a second message, and configures the multiple radios to communicate with the second mesh network device.

公开(公告)号：US10129731B2

公开(公告)日：2018-11-13

申请号：US15188831

申请日：2016-06-21

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Lori Yoshida ,  Andrew David Price ,  Varadaranjan Gopalakrishnan ,  Yi Zhu ,  Sheung Mei Chan

IPC: H04W8/00 ,  H04L5/00 ,  H04L29/08 ,  H04W40/24 ,  H04W72/00 ,  H04W84/18 ,  H04B7/04 ,  H04W88/06

Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes multiple radios. A processing device of a first network hardware device scans a channel of the first radio for access point (AP) beacon frames that each contains information identifying a mesh network device in a WMN. The processing device creates a list of a plurality of mesh network device from the AP beacon frames and transmits a location probe transmission by each of the plurality of radios one sector at a time in a neighbor discovery process. The processing device receives metrics of the location probe transmissions received by the plurality of mesh network devices in the neighbor discovery process and configures each of the plurality of radios to communicate with one of a set of neighbor mesh network devices using the metrics in a neighbor selection process.

公开(公告)号：US20170366458A1

公开(公告)日：2017-12-21

申请号：US15188841

申请日：2016-06-21

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Sheung Mei Chan ,  Andrew David Price ,  Varadaranjan Gopalakrishnan ,  Yi Zhu ,  Lori Yoshida

IPC: H04L12/741 ,  H04L29/12

CPC classification number: H04L45/745 ,  H04L45/021 ,  H04L61/6022 ,  H04W40/02 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/20 ,  Y02D70/22 ,  Y02D70/30

Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes a first radio and a second radio coupled to a processing device. The processing device receives a request from a client consumption device via the first radio and determines a destination for the request as a second mesh network device. The processing device access a master routing table to determine that the second radio is to forward the request and forwards the request to the second radio. The second radio accesses a local routing table at the second radio to determine that a radio of a third mesh network device is a next-hop mesh network device in a first path to the second mesh network device. The second radio sends the request to the radio of the third mesh network device.

公开(公告)号：US10595185B1

公开(公告)日：2020-03-17

申请号：US15886394

申请日：2018-02-01

Applicant: Amazon Technologies, Inc.

Inventor： Xi Chen ,  Lori Yoshida ,  Avinash Joshi

IPC: H04L12/28 ,  H04W8/00 ,  H04W72/12 ,  H04W40/24 ,  H04L5/00 ,  H04W48/16 ,  H04L29/08 ,  H04B7/04 ,  H04W84/18

Abstract: Technology for neighbor selection with radio channel diversity awareness is described. In one embodiment, processing logic receives an RSSI value, a neighbor-sector identifier that identifies an antenna, and an unused channel list from each neighboring mesh network device. The processing logic generates a data structure with data in entries that are sorted according to an order of ascending or descending RSSI values. The processing logic performs a first search of the data structure to obtain a first set of radio channels for a first set of communication links and a second search to obtain a second set of radio channels for a second set of communication links. The processing logic determines that the second set of radio channels is higher than a second connectivity-quality metric value of the first set of radio channels and sends a neighbor pairing request to each neighboring mesh network device in the second set.

公开(公告)号：US20170366956A1

公开(公告)日：2017-12-21

申请号：US15188831

申请日：2016-06-21

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Lori Yoshida ,  Andrew David Price ,  Varadaranjan Gopalakrishnan ,  Yi Zhu ,  Sheung Mei Chan

IPC: H04W8/00 ,  H04L5/00 ,  H04L29/08 ,  H04W40/24 ,  H04W72/00 ,  H04W84/18

CPC classification number: H04W8/005 ,  H04B7/04 ,  H04L5/006 ,  H04L67/104 ,  H04W40/244 ,  H04W72/005 ,  H04W84/18 ,  H04W88/06

Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes multiple radios. A processing device of a first network hardware device scans a channel of the first radio for access point (AP) beacon frames that each contains information identifying a mesh network device in a WMN. The processing device creates a list of a plurality of mesh network device from the AP beacon frames and transmits a location probe transmission by each of the plurality of radios one sector at a time in a neighbor discovery process. The processing device receives metrics of the location probe transmissions received by the plurality of mesh network devices in the neighbor discovery process and configures each of the plurality of radios to communicate with one of a set of neighbor mesh network devices using the metrics in a neighbor selection process.