摘要:
Embodiments of the present invention disclose a service transmission method and a device and a system for implementing the method. The method includes: recognizing a type of a received client service, encapsulating an OTN service, and generating an OTN signal frame or a lower order ODU; querying a tag forwarding base to acquire forwarding information of the OTN signal frame or the lower order ODU; acquiring tag information, and inserting the tag information into an overhead of the OTN signal frame or the lower order ODU; and forwarding the OTN signal frame according to the forwarding information. The method may further include: receiving the OTN signal frame sent by an upstream node, extracting the tag information from the overhead of the OTN signal frame; querying the tag forwarding base according to the tag information, acquiring the forwarding information of the OTN signal frame; and forwarding the OTN signal frame to a downstream node according to the forwarding information. An OTN technology is adopted in both forwarding and transmission of the service. Therefore, in the embodiments of the present invention, the forwarding and the transmission of the service may be performed in an OTN plane only, thereby reducing hardware modules of an MPLS plane.
摘要:
A method is provided for transmitting in-band signaling information in a wireless broadcasting system that transmits broadcast service data through a plurality of data Physical Layer Pipes (PLPs) constituting a frame. Non-PLP signaling information is included in a data PLP for a particular broadcast service and the data PLP is transmitted through a current frame, when no data PLP for the particular broadcast service is transmitted in at least one frame to be transmitted within a maximum schedulable period NMAX from a time the current frame is transmitted. The non-PLP signaling information indicates that no data PLP for the particular broadcast service is transmitted within the maximum schedulable period.
摘要:
The present invention relates to the field of communications technologies and discloses a method, an apparatus and a system for transmitting SDH/Sonet section overhead bytes, which reduce a burden of an intermediate node of a PTN network in a process of transmitting DCC bytes in the PTN network. In the present invention, a pseudo wire is established between a local end node and a peer end node. The local end node separates target overhead bytes from section overhead bytes of an SDH/Sonet frame, where the target overhead bytes include DCC bytes; packages the target overhead bytes to obtain a dedicated overhead packet; and sends the dedicated overhead packet to the peer end node, where the dedicated overhead packet is transmitted as a service packet of the pseudo wire. The embodiments of the present invention are mainly applied to a process of transmitting an SDH/Sonet service in the PTN network.
摘要:
The invention relates to a method for transferring control data (CD) in a transmission system for transferring payload data (UD), where the transmission rate of the control data (CD) is small compared to the transmission rate of the payload data (UD), in which the payload data (UD) or their clock signal (CL) is used as carrier for the control data (CD), to a transmission system, a transmitter ( Fig, 2 ), and a Receiver.
摘要:
The method for protecting a type B Passive Optical Network (PON) comprises preparation step for preparing an access control by a protection Optical Line Termination (OLT). The preparation step comprises the steps of: sending a ranging enabling message defining a ranging gap by a gap delay and a gap duration, the gap delay being the time to wait upon reception of the signalling ranging enabling message to range one single predetermined Optical Network Unit (ONU1) by the protection Optical Line Termination (OLT1), sending from the currently working Optical Line Termination (OLT0) to the protection Optical Line Termination (OLT1) signalling messages containing the ranging information of each Optical Network Unit (8,10,12) relative to the currently working Optical Line Termination (OLT0), ranging the predetermined Optical Network Unit (ONU1) by the protection Optical Line Termination (OLT1) during the ranging gap while keeping the currently working Optical Network Unit (OLT0) and the remaining Optical Network Units (ONU0, ONU2) silent, determining the ranging information of each Optical Network Unit relative to the protection Optical Network Unit (OLT1) from the ranging information of each Optical Network Unit relative to the currently working Optical Termination (OLT0) and the ranging information of the single predetermined Optical Network Unit (ONU1) relative to the protection Optical Line Termination (OLT1).
摘要:
A method and corresponding equipment, the method for enabling a Node B/base station to distinguish different states--HARQ active states and a DTX (non-transmitting) state--of a UE in respect to use of the feedback HSDPA (high-speed downlink packet access) channel HS-DPCCH over which the UE sends acknowledgement messages (ACK/NACK) to tile Node B in response to receiving packets via the HSDPA (downlink) data channel HS-DPCH, the method including steps in which the UE additionally sends preamble symbols if an acknowledgement message (ACK/NACK) is to be sent in a next time interval but not in the current time interval, and at least one postamble symbol prior to the UE entering the non-transmitting state (DTX).