125results about How to "Realize transparent transmission" patented technology

The invention relates to the optical communication techniques and discloses a method and a device for transmitting low-speed business signals in an optical transmission network, which leads the low-speed business signal to be mapped onto the optical transmission network with high bandwidth utilization rate, can provide a flexible scheduling mechanism and an end-to-end performance management mechanism in a level of the low-speed business signal. The method and the device for transmitting the low-speed business signal in the optical transmission network adopt a GFP mapping method for mapping the low-speed business signal (GE/FC) to an ODUGE signal which is suitable for OTN transmission; the method and the device adopt an asynchronous or synchronous multiplexing method for multiplexing the ODUGE signal in multiple ways to one-way ODUk signal; the method and the device use the mapping from ODUGE to ODUk and an ODUGE cross network for implementing the on-line and off-line business in the level of the low-speed business signal .

The invention discloses a method for transmitting a method for transmitting signal of optical channel transmission unit and a device. The method comprises the following steps of: receiving an OTUk signal of an optical channel transfer unit after the photoelectric conversion; packaging the OTUk signal into an ODU signal of an optical channel data unit; multiplexing and mapping the ODU signal to the OPUj signal of an optical channel payload unit, wherein the OPUj signal is the high-order signal of the ODU signal; and packaging the OPUj signal into the ODUj and OTUj signals and then transmitting the ODUj and OTUj signals. The embodiment of the invention can realize the completely transparent transmission of the OTU signal.

The invention relates to a method for sending and receiving a clock signal as well as an optical transmitter, an optical receiver and a system thereof. The sending method comprises superposing the following steps: a clock signal to be sent to an optical carrier by optical amplitude modulation to form a pilot tone modulated light carrier; superposing a service signal to be sent to the pilot tone modulated optical carrier by light amplitude modulation to form an optical modulation service signal; and sending the optical modulation service signal through a fiber link. The receiving method comprises the following steps: receiving an optical modulation service signal from a fiber link; outputting a mixed electrical signal including a service signal and a clock signal after photoelectric conversion and optical amplitude modulating are carried out to the received optical service-modulated signal; filtering the mixed electrical signal for separation to obtain the clock signal. The invention realizes receiving or unvarnished transmission of the clock signal without taking up other extra bandwidth or access resources of the optical transmission system, and greatly reduces network construction cost and maintenance cost, and is easy to realize.

The present invention relates to the communication transmitting field, especially relates to a method which is suitable for the fixed-speed business transmitting in the transmitting system of the OTN (optical transport network) and the device. The invention judges whether the available net loading area of the transmitting frame can support the fixed-speed business by confirming the bite number of the fixed-speed business which is received in the transmitting frame period, maps the multiplex fixed-speed business distributedly to the transmitting frame, realizes the transmitting to the unknown fixed-speed business and uses the net loading area of the transmitting frame to maximum; meanwhile the invention need not analyze and process the business agreement and can realize the transparent transmitting of the business.

The embodiment of the invention provides a method, device and system for transmitting multi-path independent Ethernet data, comprising: using a plurality of timeslot channels and NJO(multiple pairs of negative adjusting opportunity byte) and PJO (positive adjusting opportunity byte) configured in an optical path payload unit virtual concatenated frame mechanism OPUk-Xv, in order to form a virtual concatenated multi-path transmission channel; and respectively transmit independent Ethernet data in one channel via each of the transmission channel of the multi-path transmission channel. With application of the invention, it can realize OTN (optical transmission network) transparently transmitting multi-path independent Ethernet data; also it can solve the problem that the network time delay for the multi-path independent Ethernet data to pass through the OTN is uncontrollable; and the frequency deviation range does not comply with Ethernet interface defined by IEEE (Institute of Electrical and Electronics Engineers).

The invention provides a data transmission method and device, and the method is used for a transmitting end of an OTN (optical transmission network). The method comprises the steps: converting a firstframe structure into a central frame structure, wherein the central frame structure is an irregular ODU frame, and at least a part of bytes of the irregular ODU frame in each clock period are effective bytes; converting the central frame structure into a second ODU frame, and transmitting the second ODU frame into a receiving end, wherein the rate of the second ODU frame is higher than the rate of the first frame structure. The second ODU frame is a regular ODU frame, and the bytes of the regular ODU frame in each clock period are effective bytes or ineffective bytes. The rate of the effective bytes of the central frame structure is equal to the rate of the second ODU frame. The method employs FMP mapping, and solves a problem that a GMP mapping mode has defects in the OTN business.

The invention discloses a remote upgrade method of a power utilization information acquisition terminal. The terminal program upgrade file transmission is finished by use of a communication channel of an acquisition system, and the State Grid Enterprise Standard Q/GDW 376.1-2009 < power consumer power utilization information acquisition system communication protocol: master station and acquisition terminal communication protocol> is expanded; on the one hand, the method supports the realization of the file transmission through a standard file transmission command so as to realize the transparent transmission of the file; on the other hand, the method supports the breakpoint resume, the file query, the ftp downloading and like functions. Therefore, the problems of failed upgrade data file issuing caused by the communication fault, the online upgrade occupied system master station resource, and unstable system caused by channel switching are avoided.

The present invention discloses a method and a system for the transparent transmission of BPDU message in a layer 2 switched local area network; the method comprises the following steps of: encapsulating a BPDU message on the end of getting into BPDU tunnel; adding the original purpose MAC address to the encapsulated message; sending the encapsulated message through the BPDU tunnel; on the end of getting out of the BPDU tunnel, executing message forwarding to corresponding user network by obtaining and identifying the original purpose MAC address of the received message. The invention further discloses an input/output device. With the invention, the transparent transmission of the BPDU message of a layer 2 management protocol in layer 2 switched local area network can be realized simply and effectively regarding the specific type of the layer 2 management protocol, so that the applicable the layer 2 management protocol has good expandability and flexibility.

The invention discloses a machine frame straddling system and an implementation method and device of time and frequency passthrough of the system. The method comprises the following steps: a time serviced machine frame receives information sent by a time service machine frame through a communication connecting line between the time serviced machine frame and the time service machine frame; and the time serviced machine frame acquires the time information of the time service machine frame and/or the frequency information of the time service machine frame from the received information, wherein the time serviced machine frame is a machine frame where a clock source in the machine frame straddling system is located, and the time serviced machine frame is a machine frame in the machine frame straddling system accept the time service machine frame. Through the invention, the passthrough of time and frequency in machine frame straddling equipment is realized without adding hardware connection between machine frames.

The invention discloses a repeater and an information transmission method thereof. The repeater comprises a terminal and a communication module mounted on the terminal, and the repeater further comprises a data conversion unit and a remote unit. The communication module which is originally mounted on the terminal is mounted on the remote unit, and the remote unit is provided with an antenna which can be connected with the communication module for wireless communication; the data conversion unit used for analog of the communication module is mounted on the terminal and connected with the terminal through a remote communication module interface; the data conversion unit is in wired connection with the remote unit. The repeater and the information transmission method thereof have the advantages that cross-standard, cross-manufacturer and cross-product compatibility is realized; the communication module can be mounted at positions excellent in signal service, communication distance between a terminal and the communication module is effectively increased, and communication effects are excellent; in addition, normality in operation can be realized only by getting power from the terminal instead of an external power source, so that convenience in mounting and utilization is achieved.

The invention discloses a repeater and an information transmission method and a communication module hardware ID identification method of the repeater. The repeater comprises a terminal and a communication module installed on the terminal. The repeater further comprises a data conversion unit and a remote unit, the communication module originally installed on the terminal is installed on the remote unit, the remote unit is further provided with an antenna and can be connected with the communication module for wireless communication, the data conversion unit used for virtualizing the communication module is installed on the terminal and is connected with the terminal through a remote communication module interface, and the data conversion unit is in wired connection with the remote unit. The repeater achieves cross-specification, cross-manufacturer and cross-product compatibility; the communication module can be installed at the position with good signal intensity, the communication distance between the terminal and the communication module is effectively prolonged, and the communication effect is excellent. The repeater dispenses with an external power source, can work normally by only getting electricity from the terminal and is convenient to install and use.

The invention discloses a method for realizing optical fibre interconnection based on an SAS/SATA interface, which comprises the following steps of: step A, performing negotiation to an out-of-band signal of the SAS interface by a sending terminal and a receiving terminal; and step B, directly transmitting a digital signal of the SAS interface to the receiving terminal through an optical fibre by the sending terminal after the negotiation of the out-of-band signal is completed. The invention also discloses an optical fibre interconnection system based on the SAS/SATA interface. The SAS interface negotiation is performed between the sending terminal and the receiving terminal through the optical fibre, and the digital signal of the SAS is transmitted directly through the optical fibre after the negotiation is completed, thus realizing the interconnection by using the optical fibre in the SAS interface, and breaking through the length limitation and EMC problem of SAS signals connected by cables. Therefore, a storage system framework has the advantages of being more flexible, more expansible and more reliable.

The invention discloses a reverse isolating device cross method for JMS (java message service). The reverse isolating device cross method is that a JMS transmitting end of an information management area sends a JMS message to a JMS server of the information management area, a JMS reverse proxy of the information management area receives the JMS message from the JMS server of the information management area and writes the message into a file under an assigned catalog of the information management area, the file under the catalog is transmitted to an assigned catalog of a generation control area through reverse isolation cross file transmission software of a reverse isolating device, a JMS reverse proxy of the generation control area reads and analyzes the file from the catalog to acquire JMS channel information and corresponding JMS message, further, the JMS reverse proxy of the generation control area sends the JMS message to the corresponding JMS channel in the JMS server according to the JMS channel information, and finally, the JMS server of the generation control area transfers the JMS message to a JMS receiving end of the generation control area.

The invention discloses a device and a method for measuring frame error rate in a transmission link, which belong to communication technologies. The device comprises a data sending end processing part and a data receiving end processing part which are mutually connected, wherein the data sending end processing part persistently generates maintenance frames and inserts the maintenance frames in the transmission link, and the maintenance frames carry sent total frame information when the data sending end inserts the maintenance frames; the data receiving end processing part respectively reads the total frame information which represents start and end positions of a measuring period and is carried by the maintenance frames when the frame error rate needs to be measured, counts the number of frames correctly received by the data receiving end in the measuring period and calculates the frame error rate. The invention avoids the loss of service interruption caused by measurement, cannot cause counting deviation and has high reliability.

A transmission control protocol type session media stream transmission method and system, when the signaling plane access control unit determines that the UE is behind a NAT device, if the offer-SDP message body of the SIP signaling plane control message contains a=setup :xxx line, then modify the value of a=setup line according to the predetermined rule; when receiving the answer-SDP message body of the SIP signaling plane control message containing a=setup:xxx line, the answer-SDP message body and offer -The a=setup:xxx lines contained in the SDP message body are compared, and if the comparison result does not match, a simulated TCP link establishment notification message is sent to the media gateway device controlled by it, and the media gateway device is notified to perform simulated TCP link establishment. The invention can realize end-to-end high-efficiency transmission of TCP type media flow under the NAT networking environment.

The invention discloses a PON backbone line protection device which comprises a PON protection local side device and a PON protection shunt. The PON protection local side device is connected with an OLT device and used for monitoring the state of a main line and the state of a spare line and controlling selection of the main line or the spare line; the PON protection shunt is connected with the PON protection local side device and ONU devices and used for equally dividing PON signals; the PON protection local side device comprises an optical switch, a filter connected with the optical switch, a circulator connected with the filter, a laser device and a detector, and the laser device and detector are connected with the circulator; the PON protection shunt is provided with a reflection membrane used for reflecting monitoring light. Automatic switchover protection of the main line and the spare line of a PON line is achieved through the PON backbone line protection device; when a main optical fiber is disconnected because of a fault, the PON protection local side device can be automatically switched to the spare line, and it is guaranteed that the PON line can normally work.

The invention discloses an extensible network element management system, which comprises a network manager, a mainframe and one or more extended frames connected with the mainframe, wherein the mainframe comprises a network element control processor (NCP); the extended frame comprises a communication forwarding board and one or more single-board management control units (MCU) connected with the communication forwarding board; the NCP is connected with the network manager, and is used for acquiring the address of the MCU in a message from the network manager and transmitting the message to the extended frame to which a target MCU belongs; and the communication forwarding board is connected to the NCP, and is used for transmitting message to the target MCU and transmitting the message from the MCU to the NCP. Correspondingly, the invention also provides an extensible network element management system-based extensible network element management method. The method and the system have the advantages of greatly reducing the load of the network element control processor and improving the processing capacity of network elements.

The invention discloses a cell switching method and a base station. The method comprises the following steps that a source base station triggers switching; the source base station sends a switching request to a target base station, wherein the switching request carries capability information of terminal equipment to be switched, and the protocol version used by the target base station is higher than the protocol version used by the source base station; the source base station receives a switching response message sent by the target base station, and obtains undecoded configuration informationfrom the switching response message based on an abstract syntax mark corresponding to the switching response message in a communication protocol used by the source base station, wherein the decoding format of the Handover Command-r8-Ies contained in the abstract syntax mark on the switching response message is defined as the Handover Command OCTET STRING, and the decoding format of the Handover Command-r8-Ies contained in the abstract syntax mark on the switching response message is defined as the Handover Command OCTET STRING; and the source base station forwards the undecoded configuration information to terminal equipment to be switched, so that the terminal equipment to be switched completes switching according to the undecoded configuration information.

The invention discloses a data modulating and demodulating method as well as a frequency spectrum management method, device and system. The frequency spectrum management method comprises the following steps of: acquiring a target frequency band allocated for a transmitting terminal; calculating a precoded codeword index formed by a frequency spectrum according to a codebook corresponding to a current radio scene and the target frequency band, wherein the codeword index corresponds to a zero return sub carrier sequence which is used for calculating a precoding vector for modulating data; and broadcasting and transmitting the precoded codeword index. By implementing the embodiment of the invention, a receiving terminal can be used for knowing pre-filtering operation of the transmitting terminal according to the pre-coded codeword index; and the data are demodulated according to the precoding vector, and thus transparent transmission from the transmitting terminal to the receiving terminal is realized and the demodulation efficiency is improved.

The invention discloses a method and a system for acquiring monitoring and surveying result in real time. The method comprises receiving a monitoring video transmitted by a pollution source monitoring camera at the site end, carrying out A/D conversion on the video signals, encoding and compressing the video signals after A/D conversion to be converted into the general video format; collecting the monitoring data of pollution source at the site end, identifying the monitoring data, comparing with a preset alarm threshold value, if exceeding the alarm threshold value, determining alarm strategy according to standard exceeding information if exceeding the alarm threshold value, and determining alarm multimedia message content according to the alarm strategy; converting the monitoring data into a format identifiable by a video compressing and encoding device according to the determined alarm multimedia message content, overlying the monitoring data of pollution source with the signals of monitoring video and encoding to generate an alarm multimedia message; and transmitting the generated alarm multimedia message to a target terminal via a mobile network. The scheme of the invention can realize efficient and accurate unmanned automatic monitoring.

This invention discloses a permeation method for multimedia information streams including the following steps: getting and analyzing media data to set up a media data head and sending it to P2P network after a transmission slice arrives, then setting up media data packets and sending them to the P2P network after judging that the data head is sent successfully. This invention also discloses a permeation system, which not only realizes permeation of multimedia information streams and rm files, but also realizes the permeation of self coded formats.

The invention discloses a large-scale concurrent data forwarding method based on netty. The method comprises the step of establishing a data forwarder and a data receiver, wherein the data receiver is mainly responsible for receiving data information of remote hosts, analyzing the data information and searching suitable channels in the data forwarder for forwarding, and the data forwarder mainly is responsible for carrying out data transmission on a remote receiving host and for the received data, sending the data to the remote hosts by simulating the plurality of channels. The method is applicable to related applications such as transparent transmission of a great deal of sensor data or conversion of a transmission protocol in an Internet of things environment.

The invention discloses a mode division multiplexing transmission system based on a multimode optical fiber. The system comprises n channels, wherein signal sources of the channels are connected with n light modulators through light power beam splitters; the n light modulators, n polarization controller, n opto-isolators and n first mode filters are sequentially connected; the n first mode filters respectively emit light in the channels to a first mode multiplexer which multiplexes light to a first multi-mode optical fiber; the first multi-mode optical fiber is connected with a first mode demultiplexer which demultiplexes signals to n add-drop multiplexers; the n add-drop multiplexers respectively emit light to a second mode multiplexer through n second mode filters, the second mode multiplexer multiplexes n signals to an erbium-doped optical fiber amplifier, the erbium-doped optical fiber is connected with a second multimode optical fiber, the second multimode optical fiber is connected with the second mode demultiplexer, the second mode demultiplexer respectively demultiplexes light to n mode filters, and the n mode filters are respectively connected with n light receivers.