Abstract: A mapping method, an apparatus, and a system for data transmission are provided, so as to solve a problem that mapping between a Passive Optical Network (PON) service transmission path and a Pseudo Wire (PW) and/or a Packet Switched Network (PSN) tunnel cannot be realized on a premise of ensuring Quality of Service (QoS) of data transmission. Data packets are classified according to own attribute information in PSN tunnel information and/or PW information. When Multi Protocol Label Switch (MPLS) tunnel information carried in the data packets includes the PSN tunnel information or the PW information, the data packets are classified according to Class of Service (CoS) information, and/or label information in the PSN tunnel information or the PW information; and then the classified data packets are respectively mapped to service transmission paths of different PONs. The invention is applied to a PON to support packet switching technology.

Abstract: A data transmission method is provided. The method is used to transmit multiple data packets, and includes the following steps. Multiple acquired data packets are mapped to different sessions according to data header information of the data packets, in which each session corresponds to one or more data packets. A data packet is encapsulated into a session message, in which the encapsulated session message includes a session identifier of the session corresponding to the one or more data packets. Multiple session messages belonging to the same session are transmitted to a next network node through at least two tunnels in link layer.

Abstract: An extender box (EB) includes: a downlink data sending module configured to send downlink data to first passive optical network (PON) devices; at least two uplink data receiving modules configured to receive uplink data sent from a corresponding first PON device respectively; and a duplexer configured to convert the data transmission mode used by the downlink data sending module and the uplink data receiving modules from dual-fiber transmission to single-fiber transmission to implement single-fiber bidirectional transceiving. The uplink data receiving modules have ports corresponding to uplink ports of the first PON devices on a one-to-one basis. Optical fibers of the uplink data receiving modules that are connected with the uplink ports of the first PON devices are separated from optical fiber of the downlink data sending module, where the optical fiber is connected with downlink ports of the first PON devices. A data transmission method and a PON system are also disclosed.

Abstract: A method for bearing a multi-protocol label switching (MPLS) packet in a passive optical network (PON), a receiving method, an optical network unit (ONU)/optical network terminal (ONT)/optical line terminal (OLT), and a communication system are provided, which relate to an optical communication network, and are designed to solve the technical problem that protocol stack layers are complicated when a PON and a mobile network are coupled. The sending method includes the following steps. An MPLS packet is obtained. The MPLS packet is encapsulated into a Gigabit PON (GPON) encapsulation mode (GEM) frame. The GEM frame is sent. The receiving method includes the following steps. A GEM frame is received. The GEM frame is decapsulated into an MPLS packet. The MPLS packet is sent. Therefore, tight coupling between the PON and the mobile network is realized.

Abstract: A method, apparatus and system for virtual network configuration and partition handover are provided. The virtual network configuration method includes the following steps: The serving edge device obtains a target virtual network identifier and a corresponding interface identifier, uses the target virtual network identifier and the corresponding interface identifier to generate a Layer-2 Control (L2C) protocol packet, and sends out the L2C protocol packet; the communication proxy device that receives the L2C protocol packet obtains the target virtual network identifier and the corresponding interface identifier from the L2C protocol packet, and sets up a mapping relation between a target virtual network and an interface.

Abstract: A binding/unbinding processing method, system and apparatus are disclosed. The binding processing system includes: an Internet Protocol (IP) edge node and an Access Node (AN). The IP edge node is configured to: monitor received Dynamic Host Configuration Protocol (DHCP) messages, after monitoring a specific DHCP message, forward the specific DHCP message to all ANs corresponding to bound links, where the specific DHCP message is a DHCP ACK or DHCP REPLY message. The AN is configured to: receive the specific DHCP message sent by the IP edge node, parse and obtain an IP or Media Access Control (MAC) address carried in the specific DHCP message, and bind a port of the AN to the IP or MAC address according to the obtained IP address or MAC address. The present disclosure implements the binding/unbinding of an AN port to/from an IP or MAC address in inter-AN binding scenarios.

Abstract: An access network system, an address resolution protocol proxy method and an IP bridging forwarding method for the access network system are disclosed. The access network system comprises: one or more access network edge nodes that connect to one or more access nodes; one or more access nodes that connect to user terminals to the access network, and a reference point that is introduced between two adjacent access nodes for the access nodes interconnection. With this system, the multi-cast or broadcast flow in the network can be reduced and the communication delay and path can also be decreased. Therefore the communication bottleneck brought by BRAS/BNG can be avoided.

Abstract: The present invention relates to optical communications and discloses a master clock time synchronization method, slave clock time synchronization method, system and optical network device in a Passive Optical Network (PON) for the purpose of resolving time synchronization in Ethernet over Gigabit PON Encapsulation Method (GEM) mode. The PON master clock time synchronization method includes: predefining a rule for matching packet time stamp generating points; sending a first clock packet carried in a first downstream frame; acquiring time at a packet time stamp generating point that matches the frame data of the first downstream frame at the PON Media Access Control (MAC) layer and regarding the acquired time as the time the first clock packet is sent; and sending a second clock packet in a second downstream frame, where the second clock packet carries the time the first clock packet is sent.

Abstract: A network access method, an authentication method, a communications system, and relevant devices are provided to support implicit authentication based on subscriber line information in Internet Protocol version 6 (IPv6). The network access method includes: receiving a first request message sent from a User Equipment (UE) on an Access Node (AN), where the first request message carries a Link-Local Address (LLA); obtaining subscriber line information corresponding to the UE; and sending a second request message from the AN to a Broadband Network Gateway (BNG), where the second request message carries the LLA and the subscriber line information and instructs the BNG to perform access authentication. An authentication method, a communications system and relevant devices are also disclosed.

Abstract: An address configuration method, apparatus, and system are disclosed. The method includes: after receiving a neighbor solicitation message sent by a terminal and inclusive of a Link-Local Address (LLA), comparing the LLA with addresses in an Internet Protocol (IP) address cache, and judging whether any address in the IP address cache matches with the LLA; and sending a proxy neighbor advertisement message to the terminal if an address in the IP address cache matches with the LLA, where the message indicates that the LLA is a duplicate address. In the embodiments of the present disclosure, after a neighbor solicitation message is received, duplicate addresses are detected for the LLA; after the Duplicate Address Detection (DAD), an IPv6 address is generated and delivered. In this way, IPv6 stateless address auto-configuration is realized on the terminal.

Abstract: A communication proxy method, device and system are provided, including: after receiving a packet communicated between a provider device and the access device, performing a conversion process between the physical port and the logic port to physical port information or logic port information in the packet received according to the mapping information between the physical port and the logic port. Thus, it is ensued that the variation of the physical port does not affect the process in which the provider device provides services and the safety of each physical port in the access device is also guaranteed.

Abstract: A ring-based packet transmitting method, network system and node equipment are provided. The ring-based packet transmitting method includes the following steps: a received user packet is encapsulated; one or more PBB or PBT rings are detected for fault; when a fault is detected, a PBB or PBT ring having no fault is selected to send the encapsulated packet to a target node equipment according to a corresponding relation between virtual media access control (VMAC) addresses and ports. The network system includes at least two node equipments interconnected with one or more node equipments respectively through ports provided thereon to form one or more PBB or PBT rings. The node equipment includes at least two ports and a data processing unit. Thus, packet transmission on the PBB or PBT ring is achieved.

Abstract: A method, apparatus and system for virtual network configuration and partition handover are provided. The virtual network configuration method includes the following steps: The serving edge device obtains a target virtual network identifier and a corresponding interface identifier, uses the target virtual network identifier and the corresponding interface identifier to generate a Layer-2 Control (L2C) protocol packet, and sends out the L2C protocol packet; the communication proxy device that receives the L2C protocol packet obtains the target virtual network identifier and the corresponding interface identifier from the L2C protocol packet, and sets up a mapping relation between a target virtual network and an interface.

Abstract: An optical access network (OAN) system is provided. In the system, a remote radio unit (RRU) receives and sends a wireless signal and implement conversion between the wireless signal and a first frequency signal; an optical network device receives and sends the wireless signal, and implement conversion between the wireless signal and the first frequency signal and conversion between the first frequency signal and a fiber transmission signal; an optical distribution network (ODN) connected to the optical network device transmits the fiber transmission signal; an optical line terminal (OLT) device receives and sends the fiber transmission signal, and implements conversion between the fiber transmission signal and a second frequency signal, conversion between the second frequency signal and a base band signal, and conversion between the base band signal and a signal of another standard protocol.

Abstract: A PON ring system and a method for realizing primary and backup link protection in a passive optical network (PON) are provided. A PON ring is established between at least two optical line terminations (OLTs) through at least two user side edge nodes or network side edge nodes. Each of the OLTs is coupled to any other OLT through the at least two edge nodes. Two links respectively in a clockwise direction and a counterclockwise direction exist in the PON ring, in which one link is a primary link and the other is a backup link. Node of the links adopt the transmission mode of “multiple sending and selective receiving”. Therefore, the present invention reduces the impact on the PON caused by single link failure in the network.

Abstract: An aggregation node device of a passive optical network (PON) is provided which includes an aggregation optical line terminal (OLT) and an aggregation optical network unit (ONU). The aggregation OLT is connected to a user-side ONU. The aggregation OLT aggregates service data transmitted by a user-side ONU and transmits the aggregated service data to the aggregation ONU. The aggregation ONU is adapted to transmit the received aggregated service data to a network-side OLT. A PON system is further provided. The device and system can not only support the conventional time division multiplexing (TDM) services but also support the services based on variable-length packets and the multicast service. Moreover, it is not necessary to build an equipment room and supply power for an intermediate optical distribution network (ODN) which greatly reduces the network construction and operation costs.

Abstract: A session monitoring method based on multicast technologies is disclosed. The method includes: obtaining information about members of a multicast group that can be joined by a user in a session, wherein the session between a network and a member of the multicast group in the session is in an alive state; and checking whether the information about the members of the multicast group in the session includes user information corresponding to the user; if the member information includes the user information corresponding to the user, determining that the session between the network and the user as the member of the multicast group in the session is alive. A session monitoring apparatus, a session monitoring system, and an Access Node (AN) based on multicast technologies are also disclosed.

Abstract: A Dynamic Host Configuration Protocol (DHCP) authentication method includes: authenticating a Routing Gateway (RG) by an Authentication Server (AS) that serves the RG; receiving an access policy from a DHCP authenticator after the RG passes the authentication; and starting DHCP authentication according to the access policy, and performing DHCP authentication for a DHCP client connected to the RG. With the present invention, the DHCP authentication is started on the RG, and the DHCP authentication is performed for the DHCP client connected to the RG. Therefore, the DHCP client connected to the RG can undergo DHCP authentication through the RG to access the network.

Abstract: A proxy includes a session keep-alive detection converting unit, configured to perform conversion between a first session keep-alive detection message supported by a first session communication peer and a second session keep-alive detection message supported by a second session communication peer. Another proxy includes a session group keep-alive detection processing unit, configured to act as an intermediate agent for the session group keep-alive detection between a session group communication peer and a session communication peer. A method and network system for session keep-alive detection based on two proxies is also provided. The present invention can implement conversion between different session keep-alive detection mechanisms, and perform keep-alive detection on the session group, thus reducing the message traffic in the session keep-alive detection.

Abstract: A method, system, and device for filtering packets are disclosed. The method includes: by a deep packet inspection (DPI) proxy server configured at the access-network user side, identifying the service type and/or contents of a received packet, and performing DPI filtering on the packet by using a preset DPI filtering policy according to the identified service type and/or contents. In the technical solution of the present invention, DPI proxy servers are configured at the access-network user side on a distributed basis; each DPI proxy server receives packets only from a user equipment (UE) on a customer premises network (CPN), where the UE corresponds to the DPI proxy server. Compared with the DPI server configured at the edge between the core network and the access network in the prior art, the DPI proxy server provided in embodiments of the present invention processes fewer packets, thus performing real-time DPI on the packets.