Huawei Technologies Co., Limited

Jiahong Wei

Jun Li

Yu Meng Li

Wei Chen

Xiquan Zhang

Jianmin Song

Lin Liu

Hao Wang

Wei Xiong

Bo Liu

Xianyin Li

Hong Xu

Peng Ma

Yue Chang

Wumao Chen

Qiao Li

Yonghui Zhang

Yuanxiang Chen

Chenglong Liu

Xiaming Lai

A method includes a gateway node that obtains a data transmission parameter between a first-level node and each node in a first node set, where the first-level node is located on a first-level power distribution device in a power distribution grid, and the first node set includes a node located on a power distribution device at another level in the power distribution grid other than the first-level power distribution device; determines a second-level node directly coupled to the first-level node from the first node set based on the data transmission parameter between the first-level node and each node in the first node set; and generates a physical network topology of the power distribution grid.

Method and apparatus for generating physical network topology

This application provides a latency-based transmission path control method, an apparatus, and a system. Device latencies of network node devices on an active transmission path, device latencies of network node devices on a standby transmission path, latencies of links between the network node devices on the active transmission path, and latencies of links between the network node devices on the active transmission path are obtained, and calculation is performed based on the respective device latencies and link latencies to obtain an active transmission path latency and a standby transmission path latency. Then, based on a latency-based switching mechanism, when the active transmission path latency is greater than a switching threshold and the standby transmission path latency is less than the switching threshold, an active-to-standby path switching command is generated.

Latency-based transmission path control method, network controller, and system

A method of delay measurement of a network node device is disclosed. The method includes obtaining a node delay value of a current packet when a preset time period starts. The method further includes determining, based on M+1 boundary values of preset M delay intervals, a delay interval in which the node delay value is located, and adding 1 to a value of a delay segment counter corresponding to the delay interval in which the node delay value is located, where M&#x3e;1, M is a positive integer. The method further includes obtaining a node delay value of a next packet until the preset time period ends. The method further includes determining a cumulative probability Pthat is greater than or equal to a target probability, and obtaining, as a delay threshold, a node delay value having the target probability.

Delay measurement method of network node device, apparatus, and network node device

A physical layer chip of a first physical port of a network device receives a packet and sends a first time stamp and the packet to a Media Access Control (MAC) chip of the first physical port. The MAC chip of the first physical port adds the first time stamp to the packet and sends the packet. A MAC chip of a second physical port receives the packet, extracts the first time stamp of the packet, and sends the packet to a physical layer chip of the second physical port. The MAC chip of the second physical port receives a second time stamp of the packet. The network device calculates a processing delay for the packet. The processing delay is a value obtained by subtracting the first time stamp from the second time stamp.

Delay measurement method and device

A packet loss rate detection method, apparatus, and system relating to a Packet Switching Network (PSN) are provided, and the method includes: transmitting, by a transmitting end, data packets and Operation, Administration, and Maintenance (OAM) packets, and writing a counting value of the data packets into the subsequent OAM packets after a time delay, and receiving, by a receiving end, the data packets and the OAM packets, counting a number of the received data packets, and calculating a packet loss rate based on the number of the practically received data packets and the counting value carried in the OAM packets.

Packet loss rate detection method, apparatus, and system

The present invention relates to a method for accessing integrated services by an access network, including: establishing at least one Multi-Protocol Label Switching (MPLS) Label Switch Path (LSP) in a broadband access network; MPLS encapsulating at a broadband access node a service to be transmitted, and transmitting the encapsulated service in the broadband access network via the LSP. As MPLS is a technology for providing multi-layered connection, in the embodiments of the present invention, MPLS is utilized as the means for networking of broadband access network and private line passing through the core network, so that the problem faced by the broadband access network serving as the bearer network of integrated services can be solved, the integrated services of video, voice, data and private line (including IP private line, and traditional private lines of ATM (Asynchronous Transfer Mode), TDM (Time Division Multiplexing) and FR (Frame Relay)) can be carried over the broadband access network at a lower cost.

Method for accessing integrated services by an access network

An embodiment of the present invention discloses a method for distributing a service according to a terminal type, wherein a correspondence relation table for storing correspondence relations between a terminal type and an IP address of a network administration server, and an IP address of a service server is preset in a DHCP (Dynamic Host Configuration Protocol) server, and the method comprises the steps of: a terminal initiating, a DHCP access request to a network with terminal type information included in the access request; the DHCP server issuing an assigned IP address to the terminal, and querying for and issuing an IP address of a network administration server and an IP address of a service server corresponding to the terminal type information; the terminal registering with the network administration server according to the obtained IP address of the network administration server, and obtaining an access to the network; the terminal initiating a service request to the service server according to the obtained IP address of the service server, and the service server distributing the service.

Method for distributing service according to terminal type

A method of a user terminal obtaining its access location information in next generation network, and a user terminal, and a server having function of Dynamic Host Configuration Protocol (DHCP) function are disclosed. DHCP is extended by adding a new DHCP option to carry the user terminal access location information; when the user terminal accesses to network, DHCP server puts the DHCP option into DHCP response message; receiving the DHCP response message, the user terminal obtains the access location information from the DHCP option. The present invention overcomes the shortcoming of the prior art that when a terminal nomadizes or roams from one access network to another, the access network information configured on the terminal has to be updated manually and thus results in redundant workload and inflexibility, the user terminal is allowed to obtain its access location information automatically, hence nomadicity or roaming of the user terminal is supported.

Growing community of inventors

Dongguan, China

Jiahong Wei