公开(公告)号：US10419349B2

公开(公告)日：2019-09-17

申请号：US14983184

申请日：2015-12-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenmin Ge ,  Zhefeng Yan ,  Rong Wang

IPC: H04L12/801 ,  H04L12/64 ,  H04L12/66 ,  H04L29/08 ,  H04L12/825 ,  H04L12/835

Abstract: Provided are a congestion control method, device and system. The congestion control method includes: receiving, by a source device, through a first port a local anti-congestion response message sent from a sink device, wherein the local anti-congestion response message is sent after the sink device determines that the length of data cached in a port sending queue for a second port of the sink device corresponding to the first port exceeds a threshold; and suspending, by the source device, sending of a data packet which needs to be sent to the second port through the first port. Hop-by-hop congestion control for the data packets of nodes in a content centric networking (CNN) is timely and accurately realized.

公开(公告)号：US09742656B2

公开(公告)日：2017-08-22

申请号：US15137963

申请日：2016-04-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiuli Zheng ,  Bailin Wen ,  Rong Wang

IPC: H04L12/66 ,  H04L12/28 ,  H04L12/751 ,  H04L12/721 ,  H04L12/715 ,  H04L12/717 ,  H04L12/741 ,  H04L29/06

CPC classification number: H04L45/02 ,  H04L45/26 ,  H04L45/38 ,  H04L45/42 ,  H04L45/54 ,  H04L45/64 ,  H04L69/16

Abstract: Embodiments of the present invention disclose a method for acquiring, by an SDN switch, an exact flow entry, applied to an SDN network, where the SDN network includes an SDN controller and multiple SDN switches, the SDN controller communicates with each SDN switch in an inband communication manner, and the method includes: first establishing, by a first SDN switch, a reliable connection to the SDN controller; then, sending a first control message based on a packet corresponding to a protocol for the reliable connection; adding path information of the first SDN switch to the control message; and subsequently, also adding, by each SDN switch that receives the first control message, path information of each SDN switch to the first control message, so that finally, the SDN controller knows an entire path, so as to deliver a flow table to the first SDN switch.

公开(公告)号：US09628368B2

公开(公告)日：2017-04-18

申请号：US15005717

申请日：2016-01-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chunfeng Yao ,  Rong Wang ,  Zhefeng Yan

IPC: H04L12/28 ,  H04L12/751 ,  G06F17/30 ,  H04L29/08

CPC classification number: H04L45/02 ,  G06F17/30327 ,  G06F17/30961 ,  H04L67/327

Abstract: A method and an apparatus for compressing a content name are provided. In the method, a controller constructs a content name tree according to content names in a content database, where a first node of the content name tree stores a first-level prefix of a content name in the content database, and an Nth-level node of the content name tree stores prefixes of first N levels of the content name; and then the controller compresses a content name stored in the Mth-level node into a first content name stored in a father node of the Mth-level node when determining that the content name stored in each Mth-level node in the content name tree is corresponding to a first network node in a network. Thus, compression of a content name in a content name database is achieved, and space occupied by the content name is saved.

公开(公告)号：US20160241459A1

公开(公告)日：2016-08-18

申请号：US15137963

申请日：2016-04-25

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Xiuli Zheng ,  Bailin Wen ,  Rong Wang

IPC: H04L12/751 ,  H04L29/06 ,  H04L12/741 ,  H04L12/721

CPC classification number: H04L45/02 ,  H04L45/26 ,  H04L45/38 ,  H04L45/42 ,  H04L45/54 ,  H04L45/64 ,  H04L69/16

Abstract: Embodiments of the present invention disclose a method for acquiring, by an SDN switch, an exact flow entry, applied to an SDN network, where the SDN network includes an SDN controller and multiple SDN switches, the SDN controller communicates with each SDN switch in an inband communication manner, and the method includes: first establishing, by a first SDN switch, a reliable connection to the SDN controller; then, sending a first control message based on a packet corresponding to a protocol for the reliable connection; adding path information of the first SDN switch to the control message; and subsequently, also adding, by each SDN switch that receives the first control message, path information of each SDN switch to the first control message, so that finally, the SDN controller knows an entire path, so as to deliver a flow table to the first SDN switch.

Abstract translation: 本发明的实施例公开了一种通过SDN交换机获取应用于SDN网络的SDN网络的精确流入口的方法，其中SDN网络包括SDN控制器和多个SDN交换机，SDN控制器与SDN交换机进行通信， 带内通信方式，该方法包括：首先通过第一SDN交换机建立与SDN控制器的可靠连接; 然后，基于与用于可靠连接的协议相对应的分组发送第一控制消息; 将所述第一SDN交换机的路径信息添加到所述控制消息; 并且随后，还通过接收到第一控制消息的每个SDN交换机将每个SDN交换机的路径信息添加到第一控制消息，使得最后，SDN控制器知道整个路径，以便将流表传送到 第一个SDN开关。

公开(公告)号：US20240407050A1

公开(公告)日：2024-12-05

申请号：US18807172

申请日：2024-08-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jing Yao ,  Zichen Xie ,  Rong Wang

IPC: H04W76/40 ,  H04L1/08 ,  H04L5/00 ,  H04W56/00

Abstract: A short-range wireless communication method includes a sending device configured to broadcast a data packet; the sending device performs, at a predetermined time point within a time periodicity associated with the broadcasting of the data packet and in a predetermined frequency range, detection on response information fed back by at least one receiving device based on reception of the data packet, where the response information indicates at least a message that the data packet is not successfully received by any one of the at least one receiving device; and the sending device retransmits the data packet if the response information is obtained through detection.

公开(公告)号：US20240195584A1

公开(公告)日：2024-06-13

申请号：US18581473

申请日：2024-02-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zichen Xie ,  Rong Wang

IPC: H04L5/00 ,  H04W28/18

CPC classification number: H04L5/0055 ,  H04W28/18

Abstract: A method and associated apparatus provide for a management node to send to a terminal node, a negotiation request used to update a receiving/sending switching interval to first switching time. The receiving/sending switching interval includes a first receiving/sending switching interval of the management node and a second receiving/sending switching interval of the terminal node. The terminal node receives the negotiation request, feeds back acknowledgment response information to the management node in response to the negotiation request, and updates the second receiving/sending switching interval to the first switching time. The management node receives the acknowledgment response information. The management node updates the first receiving/sending switching interval to the first switching time based on the acknowledgment response information.

公开(公告)号：US20160087881A1

公开(公告)日：2016-03-24

申请号：US14961337

申请日：2015-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenmin Ge ,  Zhefeng Yan ,  Rong Wang

IPC: H04L12/717 ,  H04L12/741

CPC classification number: H04L45/42 ,  H04L45/306 ,  H04L45/745 ,  H04L67/10 ,  H04L67/2814 ,  H04L67/327 ,  H04L69/22 ,  H04L69/40

Abstract: Embodiments of the present invention provide a method for routing and forwarding. The method includes: receiving, by a network controller, a routing request message sent by a requesting routing node, where the routing request message carries a content name of requested content; determining, by the network controller according to a network topology diagram and registration information of the requested content, a proper forwarding path; and delivering, by the network controller, routing information to each routing node on the forwarding path. In the embodiments of the present invention, a network controller is introduced, and registration information and a network topology diagram are stored in the network controller, so that the network controller may be used to determine a forwarding path of a content request packet, which reduces blindness of routing and forwarding of the content request packet in an ICN network and improves efficiency of routing and forwarding.

Abstract translation: 本发明的实施例提供了一种用于路由和转发的方法。 该方法包括：由网络控制器接收由请求路由节点发送的路由请求消息，其中路由请求消息携带所请求内容的内容名称; 由网络控制器根据网络拓扑图和所请求内容的注册信息确定适当的转发路径; 并由网络控制器将路由信息传送到转发路径上的每个路由节点。 在本发明的实施例中，引入了网络控制器，并且将注册信息和网络拓扑图存储在网络控制器中，使得网络控制器可以用于确定内容请求分组的转发路径，其减少 在ICN网络中路由和转发内容请求报文的盲目性，提高路由和转发效率。

公开(公告)号：US20150195201A1

公开(公告)日：2015-07-09

申请号：US14661374

申请日：2015-03-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianfei Li ,  Rong Wang

IPC: H04L12/741 ,  H04L29/12 ,  H04L12/721

CPC classification number: H04L45/745 ,  H04L45/02 ,  H04L45/32 ,  H04L45/48 ,  H04L61/103 ,  H04L61/2015 ,  H04L61/6022

Abstract: The method includes the following steps. First, a controller receives a data packet that is reported by a switch connected to a source host; then the controller searches a local media access control (MAC) address table of physical addresses of devices to determine whether a destination address of the data packet exists, and the controller acquires a destination port if no destination address of the data packet exists, where the destination port is a port of a switch connected to a destination host, and the destination host is another host different from the source host; and finally, the controller uses the destination port as a destination address to generate a routing table, and sends the routing table to the switch connected to the source host, so that the switch connected to the source host forwards the data packet according to the routing table.

Abstract translation: 该方法包括以下步骤。 首先，控制器接收由连接到源主机的交换机报告的数据包; 那么控制器搜索设备的物理地址的本地媒体访问控制（MAC）地址表，以确定是否存在数据分组的目的地址，并且如果没有数据分组的目的地址存在，则控制器获取目的地端口，其中 目的端口是连接到目的主机的交换机的端口，目的主机是与源主机不同的另一主机; 最后，控制器使用目的地端口作为目的地址生成路由表，并将路由表发送给连接到源主机的交换机，使得连接到源主机的交换机根据路由转发数据包 表。