Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Huawei Technology Co., Ltd.

Ting Zou

Qian Zhou

Fuqing Huang

Min Zha

Jing Huang

Lingyuan Fan

Yuepeng Chen

Xushan Lu

Wu Qing

Huailong Gu

Zhenzhu Lv

Jun Li

Haiyong Xie

Yiming Wang

Dengchao Wu

Hongtao Yin

Jian Li

Dongsheng Yue

Yu Zhang

Hao Wu

Bo Dong Liu

Peng Yang

Zhongjian Zhang

Yuxiang Wang

Xiaoyu Gong

Jianqun Chen

Zhiwang Zhao

Simon Perreault

Pingan Yang

Minchang Yang

Yan Fu

Huangcheng Xu

Xiaolian Zhang

Weixue Zhou

Xiaobin Luo

An Min

Lili Xue

An Application Layer Traffic Optimization (ALTO) node comprising a processor configured to import a first set of network information from one or more software defined networking (SDN) nodes, aggregate the network information received from the SDN nodes, calculate a plurality of traffic optimization decisions based on the aggregated network information, and forward the traffic optimization decisions to the SDN nodes. Also disclosed is a method for optimizing traffic using a SDN node and an Application Layer Traffic Optimization (ALTO) node, the method comprising receiving a request for network resources from a node, obtaining a plurality of traffic optimization information from the ALTO node, negotiating one or more paths with a second SDN node using the traffic optimization information received from the ALTO node, constructing the paths, and sending a response to the node that indicates the node may forward packets via one of the paths.

Supporting software defined networking with application layer traffic optimization

A method implemented by a software defined network (SDN) controller, the method comprising receiving, from a network node, a request for path optimization, wherein the request comprises information identifying the network node and a destination node, forwarding the request to an application layer traffic optimization (ALTO) server, receiving, from the ALTO server, path information that identifies a plurality of SDN domains to be traversed from the network node to the destination node, wherein the plurality of SDN domains comprises a first SDN domain, in which the SDN controller resides, and a second SDN domain, in which an edge node known by the SDN controller resides, and determining a first path segment from the network node to the edge node.

Defining data flow paths in software-defined networks with application-layer traffic optimization

Disclosed is an apparatus comprising a network element (NE) configured to receive an Internet Group Management Protocol (IGMP) data packet in Internet Protocol version four (IPv4) format, translate the data packet into an Multicast Listener Discovery (MLD) data packet in Internet Protocol version six (IPv6) format, and forward the translated data packet. Also disclosed is an apparatus comprising a NE configured to receive an MLD data packet in IPv6 format, and translate the data packet into an IGMP data packet in IPv4 format. Also disclosed is a method comprising receiving a plurality of data packets, wherein the plurality of data packets comprise IGMP data packets and MLD data packets, translating at least one of the IGMP data packets into a MLD data packet, and translating at least one of the MLD data packets into an IGMP data packet.

IGMP/MLD translation

A network element (NE) comprising a processor configured to transmit a message to a domain names system (DNS) server, wherein the message comprises a virtual service internet protocol (VSIP) version six (VSIPv6) address corresponding to a service associated with an internet protocol version four (IPv4) address. Also disclosed is a method comprising associating a remote host internet protocol (IP) version six (IPv6) address with a private IPv4 address in a stateful binding table, and associating a local service IPv4 address with a local service VSIPv6 address in a stateless binding table.

IPv4 data center support for IPv4 and IPv6 visitors

A network node for managing the control plane functions for a plurality of nodes within a software defined networking (SDN) domain, comprising a processor configured to collect a plurality of network information from the nodes, forward the network information based on a plurality of domain-specific policies, receive traffic optimization information based on the network information, and compute forwarding decisions for the nodes based on the traffic optimization information. In another embodiment, an Application Layer Traffic Optimization (ALTO) node, comprising a processor configured to import a first set of network information from one or more SDN nodes, aggregate the network information received from the SDN nodes, calculate a plurality of traffic optimization decisions based on the aggregated network information, and forward the traffic optimization decisions to the SDN nodes.

A network node for detecting failures in a Dual Stack Lite (DS-Lite) tunnel, comprising a processor configured to obtain a domain name that identifies a first node, create the DS-Lite tunnel to the first node using the domain name, initiate a first bidirectional forwarding detection (BFD) session to the first node, transmit a plurality of BFD data packets within the DS-Lite tunnel, and detect a failure within the DS-Lite tunnel using the BFD data packets.

DS-Lite with BFD support

An apparatus comprising a memory, and a processor coupled to the memory and configured to receive a mapping rule that associates a downstream internal Internet Protocol version four (IPv4) address prefix to an upstream external IPv4 address prefix, receive a first IPv4 packet from an upstream network node with a destination address field comprising an external IPv4 address comprising the external prefix, and perform a first network address translation IPv4 to IPv4 (NAT44) process by replacing the external IPv4 address in the first IPv4 packet's destination address field with an internal IPv4 address based on the mapping rule, wherein the internal IPv4 address comprises the internal prefix and a port set identifier (ID) associated with set of destination ports at a downstream node assigned to receive the first IPv4 packet.

Stateless NAT44

The embodiments of the present invention provide a method, a device, and a system for forwarding a packet. The method includes: receiving an IPv6 packet sent by a gateway, and obtaining a flow label of the IPv6 packet, where the flow label of the IPv6 packet is corresponding to a link identity of customer premise equipment in one-to-one correspondence; decapsulating the IPv6 packet; performing network address translation on a decapsulated packet according to the flow label; and forwarding the decapsulated packet according to a translated network address. When multiple links between the gateway and an AFTR are corresponding to the same tunnel for network address translation, in the case that IP addresses of terminal users are overlapping or are the same, different terminal users can be distinguished, so that a terminal user that sends a packet can receive feedback, thus improving customer satisfaction.

Method, device, and system for forwarding packet

A method, a device, and a system for offloading network traffic are provided, which are applied in the field of mobile communications. An offloading device located before a Serving General Packet Radio Service Support Node (SGSN) receives a data stream of a user sent by a base station, obtains an offloading policy of the user from the offloading device and/or obtains the offloading policy of the user from a policy server, and forwards the data stream according to the offloading policy. Accordingly, the offloading device can obtain the corresponding offloading policy according to the data stream sent by a forwarding plane, send a data stream of low value, low real-time performance requirement, or low priority to the Internet or another specific networks, and send a data stream of high value, high real-time performance requirement, or high priority to high-value devices, thereby reducing the networking cost.

Method, device and system for offloading network traffic

A multicast/unicast admission control method, a multicast/unicast admission control device, and a multicast/unicast admission control system are provided. In the method, through centralized resource control of a resource and admission control subsystem (RACS), sharing of multicast/unicast resources is realized. The RACS allocates and authorizes resources to an access node (AN), the AN manages the obtained multicast resources under the authorization, and the resource allocation is adjusted through interaction when the multicast resources of the AN or the resources of the RACS are not sufficient.

Multicast/unicast admission control method, device and system

A method, a device and a system for combination of resource admission control are provided. The system includes the policy determination combination device and multiple bearer and transmission devices. The combination device combines functions and interfaces of two or multiple kinds of arbitrary policy determination devices in systems of different standards, and has multiple interfaces to be connected with the bearer and transmission devices, and selects the corresponding interface working protocol according to the type of bearer and transmission device. Multiple bearer and transmission devices are connected with the policy determination combination device by different interfaces. By setting policy determination combination device, the combination of policy determination devices is realized with a few changes to the current network. When there are multiple types of bearer and transmission devices in a management domain, the number of the policy determination devices can be efficiently reduced, and the cost of setting up the network and maintenance can be reduced. Also, it is propitious to collaborate and combine different standards and to improve speed of industrialization.

Method, device and system for combination of resource and admission control

The present disclosure relates to the field of communications, and discloses a method for determining path pre-congestion. The method is applicable to an Ethernet path. Pre-congestion is determined and flagged through an ingress node or an intermediate node in the Ethernet path, and a pre-congestion status indication packet is sent by an egress node to the ingress node or a policy server, so that the ingress node or the policy server obtains pre-congestion information of the Ethernet path, and notify an application function entity AF of performing admission control. When the method in the present disclosure is used, problems of packet loss and excessively long time delay caused by the conventional congestion control technology may be avoided, thereby ensuring user experience of existing services.

Method, apparatus, and system for judging path congestion

A method comprises converging resource reservation requests from users, wherein the resource reservation requests contain bandwidth values to be occupied for data transmission; determining a total bandwidth value comprising a sum of the bandwidth values to be occupied for data transmission in the converged resource reservation requests; determining the total bandwidth value is larger than a preset bandwidth threshold of a first transmission path having an identifier (ID) number; and establishing a second transmission path using the identifier (ID) number of the first transmission path distributed to the users, wherein an ID number of the second transmission path is the ID number of the first transmission path and a bandwidth value of the second transmission path is larger than or equal to the total bandwidth value.

Method, device, and system for admission control in metropolitan area network

The present invention discloses a method, system, and device for admission control and pertains to the communications field. The method includes: admitting a subscriber for watching a multicast video only if each multicast bandwidth management device has sufficient remaining bandwidth after receiving a multicast video request from the subscriber; refusing the subscriber for watching the multicast video if any multicast bandwidth management device has insufficient bandwidth and fails to borrow bandwidth from a unicast bandwidth management device; and after receiving a unicast video request from the subscriber, admitting the subscriber for watching a unicast video only if remaining unicast bandwidth corresponding to a multicast bandwidth management device in each level is sufficient, or else, refusing the subscriber for watching the unicast video. Through bandwidth negotiation between the unicast bandwidth management device and each multicast bandwidth management device, admission control is implemented.

Method, system, and device for admission control

System and method for resource admission and control is disclosed. The system for resource admission and control includes an interface unit for application function unit configured to receive service request sent from the application function unit; a policy decision function unit configured to identify the type of an access network according to the service request received by the interface unit for the application function unit and select corresponding service logic for resource admission and control according to the identified type of access network. According to the technical solutions, no matter the request for resource is made to a fixed access network defined in TISPAN, or to a wireless access network defined in the 3GPP, the policy decision function unit xPDF may identify the type of the access network and select corresponding service logic to perform resource admission and control. The xPDF conceals the details of the access network from the AF such that the solution for network construction can be simplified and the system maintenance may become simple and convenient.

Growing community of inventors

Cupertino, CA, United States of America

Ting Zou