44 results about "Transmission convergence" patented technology

Provided is an apparatus for transmitting / receiving communication and broadcasting data. The transmitting apparatus includes: a mapper for mapping inputted broadcasting data into a transport stream according to a predetermined standard; a broadcasting buffer for temporarily storing the mapped transport stream for multiplexing; a communication buffer for temporarily storing a communication data stream for multiplexing; a counter for measuring data rate information of a broadcasting stream inputted between two SYNC signals and outputting the measured data rate; an SYNC signal generator for generating an SYNC signal for synchronization between the transmitting apparatus and a receiving part and periodically transmitting the generated SYNC signal; and a multiplexer for multiplexing a communication stream, a broadcasting stream, and an SYNC signal.

The invention relates to a tomography imaging system and method based on a terahertz quantum device. The system comprises a terahertz source part, a transmission convergence light path system, a rotary parallel scanning table and a terahertz signal detection part, wherein the terahertz source part comprises a terahertz quantum cascade laser, a drive power supply and a chopping fan; the transmission convergence light path system comprises a first off-axis parabolic mirror group and a second off-axis parabolic mirror group; and the terahertz signal detection part comprises a terahertz quantum well detector, a signal processing module and a phase-locked amplifier. The method comprises the following steps: the continuous terahertz waves emitted by the terahertz quantum cascade laser are modulated by the chopping fan and converged on a sample by one off-axis parabolic mirror group; the terahertz waves penetrate through the sample and are converged to the terahertz quantum well detector through the other parabolic mirror group to generate a response light current; the light current signal is converted into a voltage signal; the voltage signal is amplified by a low-noise amplifier; and the data is read by the phase-locked amplifier. According to the invention, the tomographic image information of the sample can be effectively obtained.

In a line termination unit integrated circuit in a point-to-multipoint network, a receiver receives an upstream transmission from a network termination unit within the point-to-multipoint network, a transmitter transmits a downstream transmission to a network termination unit within the point-to-multipoint network, and an internal processor operatively coupled to the receiver processes sub-fields within the overhead field of the upstream transmission. The internal processor is also operatively coupled to the transmitter to assemble the overhead field of the downstream transmission. The upstream transmission is an upstream transmission convergence frame format having an overhead field and a payload field, and the downstream transmission is a downstream transmission convergence frame format having an overhead field and a payload field.

In a network termination device integrated circuit in a point-to-multipoint network, a receiver receives a downstream transmission from a line termination unit within the point-to-multipoint network, a transmitter transmits an upstream transmission to the line termination unit within the point-to-multipoint network, and an internal processor operatively coupled to the receiver processes sub-fields within the overhead field of the downstream transmission. The internal processor is also operatively coupled to the transmitter to assemble the overhead field of the upstream transmission. The downstream transmission is an downstream transmission convergence frame format having an overhead field and a payload field, and the upstream transmission is an upstream transmission convergence frame format having an overhead field and a payload field.

The invention discloses a terahertz quantum well photodetector (THzQWP)-based passive thermal imaging detection system and a method thereof. A photoconduction THzQWP is taken as a photodetector, a self-designed radiation signal denoising modulation method, a synchronous control module and a signal transmission-convergence light path are adopted, and THzQWP-based passive thermal imaging detection is finished; a thermal radiation signal is modulated by an adjustable aperture diaphragm and a wave chopper at an acquisition end of the thermal radiation signal, and the modulation frequency is set by the wave chopper; a photoconduction mode is adopted at a signal detection circuit end of the THzQWP, the THzQWP receives the radiation signal through an off-axis parabolic mirror group convergence light path and extracts a THz signal, stable bias voltage is applied, THzQWP photocurrent is converted into voltage by a transimpedance amplifier, the voltage is amplified by a low noise amplifier, anddata is read by a phase-locked amplifier; and the read signal is recorded and processed by the synchronous control module, and thermal image information is acquired finally.

In the embodiment, the invention discloses a method for carrying out the communication switching on a base transceiver station (BTS) and a base subsystem, relating to a telecommunication technology. The invention solves the problem of the communication switching between a calling mobile platform and a called mobile platform positioned on the same BTS set. The method comprises that whether the calling mobile platform and the called mobile platform are from the same BTS set of the same base controller BSC is judged; if yes, the calling mobile platform and the called mobile platform carry out the communication switching in a transmission convergence BTS of the BTS set; and the base subsystem comprises the base controller and the base transceiver station. The embodiment of the invention ensures that the calling mobile platform and the called mobile platform from the same BTS set can realize the communication switching in the transmission convergence BTS of the BTS set without coding / decoding for a voice frame through a converter TC.

The invention belongs to the field of petroleum drilling, in particular to an underground turbine power laser drilling tool. The underground turbine power laser drilling tool comprises a power source outer barrel, a stator blade, a rotor blade, a turbine shaft, sealing rings, a generator outer barrel, a stator, a rotor, a limit joint, a current transformer, an optical fiber laser, a combiner, an optical fiber, a drill bit body and a laser head. The stator blade and the rotor blade are connected with the turbine shaft and of an up-down two-stage structure, two O-shaped sealing rings are respectively arranged above and below the generator outer barrel, the stator and the rotor coact to produce electric energy, the current transformer is arranged at the lower part of the generator outer barrel, the optical fiber laser is arranged at the lower part of the limit joint, and laser produced by the combiner is transported to the laser head at the bottom of the drill bit body through the optical fiber. The underground turbine power laser drilling tool can provide a stable power supply for the optical fiber laser, high-energy laser transmission convergence is guaranteed, an existing drilling technology is not changed, laser and drill bit mechanical combined efficient rock breaking is realized, and petroleum drilling speed is effectively increased.

The embodiment of the invention discloses a method and a device for crossing time slots. The method comprises the following steps of: receiving a transmission convergence layer (TC) frame and extracting at least one time slot unit from payload of the TC frame, wherein each time slot unit has different units; performing crossed scheduling on the extracted time slot unit according to the preset time slot table; and outputting a crossed TC frame according to the preset generating frame header information and the crossed scheduling result, wherein a bandwidth map in the crossed TC frame at least comprises an initial position and an end position of the time slot unit, and the payload of the crossed TC frame comprises the time slot unit. The embodiment of the invention also provides an exchangedevice. In the technical scheme provided by the embodiment of the invention, the time slot units in the crossed TC frame do not need to supplement idle data to ensure that each time slot unit has thesame unit, so that the waste of bandwidth resource is reduced.

Embodiments disclosed herein are configured for retransmission above the gamma (γ) interface. At least one embodiment of a method includes receiving data from an Ethernet layer, the data being identified as eligible for retransmission or not eligible for retransmission; in response to a determination that the data is eligible for retransmission, storing a copy of at least a portion of the data in a retransmission queue; and transmitting the data across a gamma (γ) interface to a packet transfer mode transmission convergence layer.

The present invention relates to a transmission collection sublayer circuit of receiver for asynchronous transmission and its operation method. Said circuit is connected between the buffer and decoder. Said decoder can transfer a data-flow enable signal and a data flow to said circuit, under the enablement of said data flow enable signal said circuit can utilize a data processing management circuit to receive and simultaneously temporarity store array byte data in any signal element, and utilize a signal head error check register to receive said byte data and search signal head. After an idlesignal element identification character is used for validating that said signal element is a non-idle signal element or not, when said signal head is found and said signal element is non-idle, an inverse scrambler is used to obtain effective load data of said signal element.

The invention discloses a wind-photovoltaic-thermal-bundled DC transmission AGC control method. Firstly a master control area and a wind-photovoltaic-thermal-bundled control area are established in aprovincial power grid, wherein the control boundary of the wind-photovoltaic-thermal-bundled control area is a thermal total transmission connection line, a DC transmission connection line and a new energy transmission convergence line. If the wind-photovoltaic-thermal-bundled control area has an overall power generation plan, the wind-photovoltaic-thermal-bundled control area uses the FTC mode tocontrol. If there is no overall power generation plan, the wind-photovoltaic-thermal-bundled control area can use the internal fluctuation suppression and auxiliary main network frequency connectionline power control mode so that waxing and waning of the wind-photovoltaic-thermal output can be realized, the power of the bundled transmission area is ensured to be stable and the influence of new energy fluctuation of the wind-photovoltaic-thermal-bundled transmission area on the overall power grid can be reduced.

Embodiments disclosed herein are configured for retransmission above the gamma (γ) interface. At least one embodiment of a method includes receiving data from an Ethernet layer, the data being identified as eligible for retransmission or not eligible for retransmission; in response to a determination that the data is eligible for retransmission, storing a copy of at least a portion of the data in a retransmission queue; and transmitting the data across a gamma (γ) interface to a packet transfer mode transmission convergence layer.

The present invention relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided, so as to improve flexibility of a system and satisfy a requirement that an error probability is reduced as low as possible. The method includes: after success of link, sending a preamble according to an allocated time slot, sending a burst synchronization delimiter, and then sending successively a burst header, a Gigabit-Capable Passive Optical Network (GPON) Transmission Convergence (GTC) frame header, and GTC frame data. In the sent synchronization delimiter, the number of non-zeros is the same as the number of zeros, and in a delimiter sequence, the number of non-zeros on odd bits is equal to the number of zeros on even bits, and the number of non-zeros on even bits is equal to the number of zeros on odd bits, the number of zeros on the odd bits is N, the number of non-zeros on the odd bits is M, a relation |N−M|≦1 is satisfied, the number of zeros in a continuous zero group is X, the number of non-zeros in a continuous nonzero group is Y, and a relation |X−Y|≦1 is satisfied. A device for sending an upstream transfer frame in a passive optical network is further provided.

Provided is an apparatus for transmitting / receiving communication and broadcasting data. The transmitting apparatus includes: a mapper for mapping inputted broadcasting data into a transport stream according to a predetermined standard; a broadcasting buffer for temporarily storing the mapped transport stream for multiplexing; a communication buffer for temporarily storing a communication data stream for multiplexing; a counter for measuring data rate information of a broadcasting stream inputted between two SYNC signals and outputting the measured data rate; an SYNC signal generator for generating an SYNC signal for synchronization between the transmitting apparatus and a receiving part and periodically transmitting the generated SYNC signal; and a multiplexer for multiplexing a communication stream, a broadcasting stream, and an SYNC signal.

The embodiment of the invention provides an information processing method and a mobility management entity and is used for solving the technical problem that in the prior art, a protocol conversion process of business of a trunking core network at a T1 interface is relatively complex. The method comprises the steps that the mobility management entity (MME) obtains a non-access stratum (NAS) message from a terminal, wherein the NAS message is used for indicating business requested by the terminal; the MME analyzes the NAS message and judges whether a message type of the NAS message is a presetmessage type or not; and if the message type of the NAS message is the preset message type, the MME transparently transmits the NAS message to a transmission convergence function (TCF) through a transmission link according to a preset transmission protocol, wherein the preset transmission protocol is any one of a transmission control protocol TCP, a user datagram protocol UDP, a stream control transmission protocol SCTP and a system queue protocol.

A telecommunication environment includes an interface card and a system communication controller. The interface card provides an asynchronous transfer mode interworking capability that is compatible with a serial communications controller within the system communication controller. A transmission convergence sublayer within the interface card identifies valid asynchronous transfer mode cells carried over a T1 / E1 trunk link. The valid asynchronous transfer mode cells are transferred to an encapsulation unit within the interface card. The encapsulation unit generates encapsulated frames in a protocol format understood by the serial communications controller. The encapsulated frames carry asynchronous transfer mode cells for processing by the system communication controller. A processor within the system communication controller performs segmentation and reassembly processes on payload extracted by the serial communications controller.

An implementing process of transmission convergence sublayer is used on a WiMAX base station on the basis of IP, which comprises the following two parts, the first part is the maintenance of a categorizer data structure which comprises the establishment, deletion, activation and activation release of the categorizer, the second part is that the execution of sort operations for the descending sectionalization, and the implementing key points lie in that firstly using target IP address prefix as index to establish a mapping mechanism from the target IP address of the descending sectionalizationto the relative categorizer subset, secondly searching for the relative categorizer subset through utilizing the target IP address prefix of the sectionalization, and then searching for the suitable categorizer which has the highest priority from the relative categorizer subset, thereby mapping the descending data sectionalization on the relative connection of the categorizer which is searched. The process especially conducts optimization on account of the target IP address, significantly increases the speed of the sort operation, and simultaneously, the processing algorism is simple and is easy to be realized.

The invention provides an encryption / decryption seamless switch achieving method. The encryption / decryption seamless switch achieving method comprises a port identification encryption / decryption enabled switch mode used by negotiation between an optical line terminal (OLT) and an optical network unit (ONU). If the negotiation uses an appointed port identification encryption / decryption enabled switch mode, the OLT can send a gigabit passive optical network transmission convergence layer GTC frame to the ONU. A gigabit passive optical network packing type GEM frame of the GTC frame carries decryption enabled indication to indicate whether the GEM frame needs to be decrypted. The ONU can decide whether the GEM needs to be decrypted according to the decryption enabled indication. The invention further provides an OLT and an ONU.

The invention discloses a passive optical network framing method, device and system. The method includes generating a first Gigabit passive optical network transmission convergence GTC frame and a second GTC frame respectively, wherein the sum of the frame lengths of the first GTC frame and the second GTC frame is 125 microseconds, and the second The frame header interval of the GTC frame is 125 microseconds; the second GTC frame is bit-mapped to generate a third TC frame, and the bit mapping refers to using N bits for each bit of the second TC frame to identify; sending the first GTC frame and the second GTC frame to an optical network unit. Since the line rate corresponding to the second GTC frame in this framing method is lower than 2.488Gbps, the rate of the receiver on the receiving side is reduced and the bandwidth of the receiver is narrowed, thereby reducing the loss of the optical link, thereby improving the optical power budget .

The invention provides a novel optical network terminal of an ATM-PON (Asynchronous Transfer Mode-Passive Optical Network) access network system, comprising a photo-electric / electro-photo conversion module, a clock recovery module, a transmission convergence layer module, a Utopia interface module, a channel layer module and an adaptation layer and high layer universal software platform module which have the connection relationship as follows: a signal in an ascending direction sequentially flows to the photo-electric / electro-photo conversion module, the clock recovery module, the transmission convergence layer module, the Utopia interface module, an ATM layer module and the adaptation layer and high layer universal software platform module; and a signal in a descending direction sequentially flows to the adaptation layer and high layer universal software platform module, the ATM layer module, the Utopia interface module, the transmission convergence layer module and the photo-electric / electro-photo conversion module. The novel optical network terminal can meet the requirement of broadband access of fiber to the home (FTTH), provide 155MHz bandwidth which is vertically symmetrically for each user and provide various kinds of broadband business service for the user.

The invention discloses a realization method and system of transmission convergence layer framing in a passive optical network, and relates to the field of the passive optical network. The method comprises the following steps: fragmenting data frames participating in the TC framing according to an independent development algorithm to obtain the data frames participating in the fragmentation; adding the data frames participating in the fragmentation in a GEM frame header, encapsulating to the GEM frame; and computing the length of an idle frame according to the independent development algorithm when needing to insert the idle frame. The framing of the data frame and the insertion of the idle can be dynamically controlled by using the realization method disclosed by the invention, the framing probability of the data frame is increased as far as possible when guaranteeing the constant linear velocity of the TC framing, the insertion of the idle frame is maximally reduced, and the throughput and the QOS of the whole PON system are improved.

The present invention provides a method and an apparatus for transmitting a physical layer operations administration and maintenance message, wherein the method comprises: splicing multiple messages with a sum of the length of message contents less than a predetermined length into a message group by a predetermined manner, and transmitting the message group in a gigabit passive optical network transmission convergence frame. By the invention, the problems of wasting the bandwidth, prolonging the time of message interaction and reducing the reliability of the message interaction in the prior art are solved, thereby effectively reducing the occupation of the bandwidth and the time of the message interaction, and improving the reliability of the message interaction.

The present invention provides a method for realizing seamless switching of encryption and decryption, including: the port identification encryption and decryption enabling switching mode negotiated and used between an optical line terminal (OLT) and an optical network unit (ONU); If the mode can be switched, the OLT sends a gigabit passive optical network transmission convergence layer GTC frame to the ONU, and the gigabit passive optical network encapsulation form GEM frame contained in the GTC frame carries a decryption enable indication, indicating that the corresponding Whether the GEM frame needs to be decrypted. The ONU decides whether to decrypt the GEM according to the decryption enabling indication. The invention also provides an OLT and an ONU.

The invention provides a passive optical network compatible device. Two uplink burst clock and data recovery units recover received uplink data according to two standards and sends the recovered uplink data to corresponding uplink delimiting, descrambling and forward error correction (FEC) decoding units, the two uplink delimiting, descrambling and forward error correction (FEC) decoding units delimit the received recovered uplink data according to two standards, after the delimiting is successful, a processed GTC frame is sent to a gigabit passive optical network transmission convergence (GTC) deframing unit, and finally the GTC deframing unit sends the data obtained by deframing to different processing units for processing. The invention also discloses a realizing method compatible with a passive optical network and an optical line terminal.

A transmission convergence sublayer circuit of a receiver for asynchronous transmission and an operation method thereof, the circuit is coupled between a buffer and a deframer. The data framer sends a data flow enable signal and a data flow to the circuit, and the circuit uses a data processing pipeline to receive and temporarily store the array byte data in any cell under the permission of the data flow enable signal , and use a header error check register to receive byte data at the same time, search for the header, and use an idle cell identifier to confirm whether the cell is a non-idle cell; when the header is found, and it is a non-idle cell After the free cell, use an anti-scrambler to obtain the payload data of the cell from the data processing pipeline, and perform anti-scrambling after obtaining the data amount enough to reach one word of data, so that it can be processed in a minimum Waiting time, output one word of data to the buffer. In addition, this circuit also has the function of automatic correction when a data error occurs in the header, so that the receiving circuit can continue to perform the receiving function smoothly.

A transmission convergence method of base station controller is disclosed. The radio resource management module RMM is positioned far from the system control module SCM and close to the sites. A time slot exchange technique is used to filter out the useless idle channels and switch the useful service channels to the convergence interface ABIS. Then they are transmitted to the SCM. Its advantages are low transmission cost and flexible extension of system.

The invention belongs to the field of petroleum drilling, in particular to an underground turbine power laser drilling tool. The underground turbine power laser drilling tool comprises a power source outer barrel, a stator blade, a rotor blade, a turbine shaft, sealing rings, a generator outer barrel, a stator, a rotor, a limit joint, a current transformer, an optical fiber laser, a combiner, an optical fiber, a drill bit body and a laser head. The stator blade and the rotor blade are connected with the turbine shaft and of an up-down two-stage structure, two O-shaped sealing rings are respectively arranged above and below the generator outer barrel, the stator and the rotor coact to produce electric energy, the current transformer is arranged at the lower part of the generator outer barrel, the optical fiber laser is arranged at the lower part of the limit joint, and laser produced by the combiner is transported to the laser head at the bottom of the drill bit body through the optical fiber. The underground turbine power laser drilling tool can provide a stable power supply for the optical fiber laser, high-energy laser transmission convergence is guaranteed, an existing drilling technology is not changed, laser and drill bit mechanical combined efficient rock breaking is realized, and petroleum drilling speed is effectively increased.

The embodiment of the invention discloses a method and a device for crossing time slots. The method comprises the following steps of: receiving a transmission convergence layer (TC) frame and extracting at least one time slot unit from payload of the TC frame, wherein each time slot unit has different units; performing crossed scheduling on the extracted time slot unit according to the preset time slot table; and outputting a crossed TC frame according to the preset generating frame header information and the crossed scheduling result, wherein a bandwidth map in the crossed TC frame at least comprises an initial position and an end position of the time slot unit, and the payload of the crossed TC frame comprises the time slot unit. The embodiment of the invention also provides an exchangedevice. In the technical scheme provided by the embodiment of the invention, the time slot units in the crossed TC frame do not need to supplement idle data to ensure that each time slot unit has thesame unit, so that the waste of bandwidth resource is reduced.

The invention provides main equipment of an emergency mobile communication system, the main equipment comprises a core network part, a base station part and an optical transmission part, the core network part completes user management and service bearer establishment and management functions of the emergency mobile communication system and establishes connection with an external network to realize interconnection and intercommunication, and the base station part is responsible for generating a radio frequency signal and transmitting the radio frequency signal to the optical transmission part. The main body equipment comprises a main control unit, a software radio unit, an optical transmission convergence unit and a power supply module, the main control unit is configured with the software radio unit, and the software radio unit is configured with the optical transmission convergence unit; and the optical transmission convergence unit realizes one-to-many forwarding of interface data of the software radio unit and the far-end radio frequency unit.