公开(公告)号：US20200344159A1

公开(公告)日：2020-10-29

申请号：US16397124

申请日：2019-04-29

Applicant: Cisco Technology, Inc.

Inventor： PASCAL THUBERT ,  HUIMIN SHE ,  PATRICK WETTERWALD ,  LI ZHAO

IPC: H04L12/753 ,  H04L29/08

Abstract: In one embodiment, a method comprises attaching, by a constrained network device in a data network, to a first parent network device in a tree-based storing mode topology in response to receiving a first advertisement message generated by the first parent network device; outputting to the first parent network device a plurality of routes stored in the constrained network device, the routes identifying destinations reachable via the constrained network device; determining, by the constrained network device, that the first parent network device is encountering saturation of stored routes based on the constrained network device receiving a second advertisement message from the first parent network device; and eliminating, by the constrained network device, the saturation encountered by the first parent network device based on moving at least a portion of the routes from the first parent network device to a second parent network device in the tree-based storing mode topology.

公开(公告)号：US20200374208A1

公开(公告)日：2020-11-26

申请号：US16419124

申请日：2019-05-22

Applicant: Cisco Technology, Inc.

Inventor： LELE ZHANG ,  LI ZHAO ,  CHUANWEI LI ,  FEILIANG WANG

IPC: H04L12/26 ,  H04W84/18 ,  H04W4/06 ,  H04L12/24 ,  H04L12/751

Abstract: In one embodiment, a method comprises: determining, by a network device in a wireless data network, a past throughput of broadcast data packets transmitted at broadcast transmission intervals of a prescribed broadcast schedule over a selected measurement interval, the broadcast transmission intervals each adjacent to unicast transmission intervals allocated in the wireless data network, each of the broadcast transmission intervals in the prescribed broadcast schedule initially set at a prescribed duration; predicting, by the network device, a predicted throughput of a future broadcast transmission interval of the prescribed broadcast schedule, for transmission of at least a future broadcast data packet, based on executing a trendline prediction of the predicted throughput using the past throughput over the selected measurement interval; and adjusting the corresponding prescribed duration of the future broadcast transmission interval, relative to the corresponding adjacent unicast transmission interval following the future broadcast transmission interval, based on the predicted throughput.

公开(公告)号：US20230422023A1

公开(公告)日：2023-12-28

申请号：US17850094

申请日：2022-06-27

Applicant: Cisco Technology, Inc.

Inventor： PASCAL THUBERT ,  HUIMIN SHE ,  LI ZHAO

IPC: H04W8/26 ,  H04W4/70

CPC classification number: H04W8/26 ,  H04W4/70 ,  H04W88/16

Abstract: In one embodiment, a method comprises: outputting, by a gateway device in a wireless data network comprising wireless network devices, a rule template for execution by any of the wireless network devices, the rule template comprising a device information variable for insertion of a device-specific value by a corresponding wireless network device executing the rule template, a context variable for insertion, by the wireless network devices, of a generic network context, and a compression rule specifying a compression operation and a corresponding decompression operation; and providing the generic network context to the wireless network devices, enabling each wireless network device to selectively execute the rule template, for execution of one of the compression operation on a network protocol data packet or the corresponding decompression operation for recovery of the network protocol data packet, based on the insertion of the corresponding device-specific value for the device information variable.

公开(公告)号：US20230064808A1

公开(公告)日：2023-03-02

申请号：US17671712

申请日：2022-02-15

Applicant: Cisco Technology, Inc.

Inventor： PASCAL THUBERT ,  HUIMIN SHE ,  LI ZHAO ,  JEAN-PHILIPPE VASSEUR

IPC: H04W48/18 ,  H04W24/08 ,  H04W36/12 ,  H04L43/0876

Abstract: In one embodiment, a method comprises: first determining, by a controller, a target load for each of at least first and second wireless data networks rooted by respective first and second root network devices; second determining, by the controller, that at least a prescribed minimum number of network devices attached within the first wireless data network need to migrate from the first wireless data network to the second wireless data network based on the respective target loads; and causing, by the controller, the prescribed minimum number of network devices to migrate from the first wireless data network to the second wireless data network, based on the controller sending to the first and second root network devices enrollment priorities to be advertised by the first and second root network devices, respectively.

公开(公告)号：US20230379782A1

公开(公告)日：2023-11-23

申请号：US17747649

申请日：2022-05-18

Applicant: Cisco Technology, Inc.

Inventor： PASCAL THUBERT ,  HUIMIN SHE ,  LI ZHAO

IPC: H04W36/22 ,  H04W60/06 ,  H04W28/08

CPC classification number: H04W36/22 ,  H04W60/06 ,  H04W28/0804

Abstract: In one embodiment, a method comprises: determining, by a controller device, load attributes for respective wireless network devices in a data network comprising at least a first wireless data network rooted by a first root network device, each wireless network device attached to at least an identified parent network device; identifying, by the controller device based on at least a subset of the load attributes, that at least one targeted device among the wireless network devices needs to migrate to a different parent network device in the data network; and causing, by the controller device, the targeted device to detach from its identified parent network device and attach to the different parent network device based on generating and outputting an individual attachment directive destined for the targeted device.

公开(公告)号：US20230319683A1

公开(公告)日：2023-10-05

申请号：US17712381

申请日：2022-04-04

Applicant: Cisco Technology, Inc.

Inventor： PASCAL THUBERT ,  LELE ZHANG ,  HUIMIN SHE ,  LI ZHAO

IPC: H04W40/24

CPC classification number: H04W40/246

Abstract: In one embodiment, a method comprises: creating, by a root network device in a wireless data network, a perimeter topology comprising a first distance vector-protocol path of a first group of perimeter devices and a second distance vector-protocol path of a second group of the perimeter devices, the creating comprising outputting first and second advertisement messages causing the perimeter devices to attach to only one parent of only one of the first or second distance vector-protocol paths and a junction device to attach at respective ends of the first and second distance vector-protocol paths; and causing the junction device to forward, from the first distance vector-protocol path, a data packet toward the root network device via the second distance vector-protocol path.

公开(公告)号：US20230068112A1

公开(公告)日：2023-03-02

申请号：US17409985

申请日：2021-08-24

Applicant: Cisco Technology, Inc.

Inventor： PASCAL THUBERT ,  LI ZHAO ,  HUIMIN SHE ,  CHUANWEI LI

IPC: H04L12/26 ,  H04L12/24 ,  H04L12/727

Abstract: In one embodiment, a method comprises: joining, by a network device, a network topology rooted by a root network device in a data network, and in response transmitting an advertisement indicating a position of the network device in the network topology; suppressing a second transmission based on initiating a deferred transmission operation in response to transmitting the advertisement; maintaining the deferred transmission operation to enable a prescribed minimum number of other network devices to join the network topology at respective identified lower positions than the position of the network device; and changing, by the network device, from the deferred transmission operation to an accelerated operation in response to expiration of a prescribed deferral interval or detecting the prescribed minimum number of other network devices having the respective identified lower positions, the accelerated operation enabling the network device to initiate transmission of a data packet before the other network devices.

公开(公告)号：US20220124073A1

公开(公告)日：2022-04-21

申请号：US17563646

申请日：2021-12-28

Applicant: Cisco Technology, Inc.

Inventor： LI ZHAO ,  PASCAL THUBERT ,  HUIMIN SHE ,  HAIBO DONG

IPC: H04L41/06 ,  H04W40/02 ,  H04W28/02 ,  H04W12/033

Abstract: In one embodiment, a method comprises: registering, by a root network device in a low power and lossy network, a constrained network device that is reachable within the low power and lossy network; obtaining, by the root network device, executable code associated with execution of a network service operation by the constrained network device; receiving a data packet from a source device and destined for the constrained network device; and causing execution on the data packet, by the root network device, of the network service operation on behalf of the constrained network device in response to reception of the data packet.