90results about How to "No packet loss" patented technology

The invention discloses a method and a device for receiving RTP data packets. The method comprises the following steps of: receiving RTP data packets from a network; performing first-level buffering and pre-ordering of the received RTP data packets; and performing the second-level buffering of the RTP data packets undergoing the pre-ordering, wherein a queue group serving as the first-level buffer is used for the first-level buffer and pre-ordering treatment of the received RTP data packets, and the queue group comprises a linked list group and an array group. The device has the advantages of overcoming the defect of low processing efficiency of the RTP receiving mode existing in the prior art and improving the receiving efficiency of the RTP data packets.

The invention discloses a named data network transmission control method and system. The method comprises the steps of determining speed and determining a forwarding strategy. According to the step of determining the speed, a requester sends a request packet to a named data network, when the network feeds back a data packet corresponding to the request packet to the requester, a router estimates accurate congestion information in the network and writes the accurate congestion information into the data packet, the maximum sending rate of the request packet of the flow is calculated according to the accurate congestion information and the estimated value of the data packet, and follow-up request packets are sent with the speed. According to the step of determining the forwarding strategy, when the network feeds back a data packet corresponding to the request packet to the requester, the router further calculates available values of all forward interfaces corresponding to a flow path according to the accurate congestion information in the network, and the available values are used for selecting the interface with the maximum available value in a self-adaption mode when the request packet is forwarded. Therefore, the network resource utilization rate can be improved effectively, packet loss probability can be reduced, and data flow completion time can be shortened.

The invention discloses a method for switching message of switching network, a switching device, a route line card and an ether line card. The method includes: allocating independent output buffer for each port of the switching device; dividing the output buffer of each port into mutually independent output buffer queue corresponding to various line cards, according to the types of the line card capable of being inserted; the switching device, switching a message that the line card types of the source line card and the object line card are same, to the output buffer queue corresponding to the object line card type at the port for inserting the object line card. Application of the invention can realize at least two switching planes at one switching device.

This invention discloses a terminal device. The terminal device comprises a first control module, a second control module, a judge module and a third control module; the first control module is used for controlling the terminal device to establish a TCP (Transmission Control Protocol) connection with a server through a WiFi network; the second control module is used for controlling the terminal device to send an IP (Internet Protocol) data message to the server through the WiFi network; the judge module is used for judging whether the terminal device receives ACK (Acknowledgement Character) acknowledgement message returned by the server according to the IP data message in a first transmission time delay or not; the first transmission time delay is less than a default transmission time delay in the TCP connection; the third control module is used for resending the IP data message to the server through a LTE (Long Term Evolution) network when the terminal device does not receive the ACK acknowledgement message returned by the server according to the IP data message in the first transmission time delay. This invention further discloses a method for controlling data transmission. By adopting the terminal device and the method provided bythe invention, the terminal device can keep a preferable transmitting speed without a congestion control.

The invention discloses an automatic brick type milk bag casing system and a casing method thereof. The casing system comprises a milk bag conveying platform (1) and a packing case conveying line (2), wherein an integration and separation device (9) is arranged on the milk bag conveying platform (1), a transitional conveying platform (10) is arranged on the front side in the conveying direction, and a grabbing robot (11) adopting a clamping apparatus (12) at the lower end of a mechanical hand is arranged on the front side of the transitional conveying platform (10). The casing method comprises the flow processes of lane division, pre-integration, grabbing and casing, the clamping apparatus (12) is used for grabbing brick type milk bags and then firstly translating the milk bags to the translational conveying platform (10) along the conveying direction of the milk bag conveying platform (1), and then the clamping apparatus (12) is used for translating the milk bags onto a packing case on the packing case conveying line (2) along the direction which is vertical to the conveying direction of the milk bag conveying platform (1) for completing the packing process. The automatic brick type milk bag casing system disclosed by the invention has the advantages of simple structure and convenience in operation, the clamping apparatus can perform translational motion along the straight line direction, the packing is tidy, fast and high in efficiency, and the automatic brick type milk bag casing system is suitable for popularization and use.

The system consists of control terminal and high voltage switch with receiving device controlled by the execution terminal. The signal transmitted between control terminal and server and the signal transmitted between sever and execution terminal are transferred through public communication network. The switch controller for making real time control to switch is connected with execution terminal and high voltage switch.

The invention aims at providing a method, a device and a system for achieving dynamic migration of virtual base stations in a BBU pool. A second virtual base station for accepting migration of a first virtual base station is determined by utilizing a migration management device according to a migration request of the first virtual base station; the first virtual base station sends a corresponding migration relevant parameter to the second virtual base station; the second virtual base station configures a corresponding communication tunnel according to the migration relevant parameter; the first virtual base station switches a corresponding data path and an interface to the second virtual base station according to the communication tunnel. Compared with the prior art, the method, the device and the system achieve non-destructive virtual base station migration, millisecond-magnitude-order service interruption time and packet loss freeing, ensure the service quality and enable users not to feel the migration process.

The invention relates to a network protocol, in particular relating to a security network protocol for inter-column communication of a system, in particular to a communication method based on a security network protocol for inter-column communication of a reactor protection system. The protection system comprises a communication system among distributed servers, the protocol is composed of a physical layer, a data link layer and an application layer, and the communication method is characterized in that a sending party and a receiving party in network equipment in the security network protocol are in point-to-point connection; and sending and receiving have the same time cycle. By utilizing the communication method, the network transmission is stable, and the communication method further has the specific advantages that as the sending sequences are matched equivalently, the network load is constant, and the safety and real-time property of a network are improved.

The invention provides an FPGA based multi-channel data recording and playback method. With a method for setting a data selector and adding or stripping marks, a function for completing the recording of multi-channel data working synchronously by a one-time recording operation can be achieved; and meanwhile, when a single task formed by one-time recording is in the playback operation, data can be returned through corresponding channels without packet loss. The multi-channel data recording and playback method can be used for recording multi-channel real-time data working synchronously, and the data can be played back at any time when needed to reproduce a test scenario. According to multi-channel data recording and playback method, the data can be effectively managed and used, the function of a data switch is replaced to a certain extent, the system design is simplified, and the system cost is reduced.

The invention discloses a method of setting the flow control model. The method is as follows: a switch obtains an auto-negotiation result currently saved by a local PHY chip, and the auto-negotiation result is used to define a flow control model executed by a local switch chip and determine a flow control model currently executed by the local switch chip; and then the switch compares the flow control model defined by the auto-negotiation result with the flow control model currently executed by the local switch chip, and when the switch determines the two are inconsistent, the switch resets the flow control model executed by the local switch chip according to the flow control model defined by the auto-negotiation result. In this way, the flow control states of the local terminal and the communication remote terminal are assured to be consistent, and the packet loss situation is avoided happening due to the disorder of the flow control state in the communication process between the local terminal and the communication remote terminal, thereby improving the work quality of the switch to a great degree and the stability of the system. The invention discloses a switch at the same time.

The invention discloses a high-level transmission method and device used in a base station and UE (User Equipment). The UE maps a first sequence number into a second sequence number, wherein the firstsequence number is an integer in a first set, and the second sequence number is an integer in a second set; the first set comprises K1 integers, and the second set comprises K2 integers; the first set is a subset of the second set; the K1 and the K2 are respectively positive integers, and the K1 is less than the K2; and both the first sequence number and the second sequence number correspond to afirst bit sequence. The high-level transmission method used in the base station and the UE can ensure that no packet loss is caused during reassortment of a second cell group when a user switches cells or during dual linking. Furthermore, the method enables the sequence numbers of transmitted or received data packets to be continuous when the base station or the UE sends switching or dual linkingreassortment.

An embodiment of the invention provides a protection switching method, a device and a system thereof, wherein the protection switching method comprises the following steps: respectively establishing path of data transmission to the data transmission end through an operating link and a protecting link, and receiving service data from the data transmission end through the operating link; receiving detection information from the operating link and the protecting link; when the operating link is determined to be generated with a failure according to the detection information, transmitting notifying information indicating circuit switching to the data transmission end; and receiving the service data transmitted from the data transmission end through the protecting link. The embodiment of the invention also provides a protection switching device and a protection switching system correspondingly. The protection switching method, the device and the system provided by the embodiment of the invention can increase the protection switching efficiency, reduce the data loss in the protection switching process and increase the transmission quality of service data.

Provided are a method and device of alleviating VANET broadcast storm, wherein the method comprises the steps of: a first node receiving the data package from a last node, determining whether the data package is received for the first time, calculating a distribution time slot if receiving the data package for the first time, calculating a retransmission probability, rebroadcasting the data package according to the retransmission probability through the distribution time slot after receiving the data package, or abandoning the data package. In the technical scheme, the distribution time slot and a weighting forwarding probability are designed to reduce the information flooding influence in a VANET; the distribution time slot can reduce the data package flooding probability in time dimension, and the weighting forwarding probability can reduce the data package flooding probability in space dimension, thereby alleviating VANET broadcast storm in the case of dense traffic, avoiding important information loss, and solving the problems of broadcast storm and important information loss in the prior art.

The invention discloses a rate control method. In the method, a control device receives a connection establishment request of a terminal, and the connection establishment request is used for establishing connection for data transmission of the terminal; the control device sends rate control time management information to the data sending device, wherein the time management information is used forthe data sending device to perform rate control on the data sent on the connection, the time management information comprises starting time indication information of a rate control time unit for performing rate control, and the starting time indication information is used for indicating the starting time of the rate control time unit. By means of the scheme, the problem that in the prior art, whenthe data sending equipment sends the reasonable number of data through the rate control information, packet loss or delay processing still occurs is solved.

The invention provides a load balancing method and a load balancing device. When users on a first service board migrate to a second service board, a control module can calculate access users belonging to a second user group in view of the current access users according to the second user group corresponding to the second service board, user table entries corresponding to the access users belonging to the second user group in a first user group are synchronized to the second service board, second user group table entries are obtained, an access board is controlled to update access users corresponding to the second user group table entries, flow of the access users belonging to the second user group is guided to the second service board for being processed, and thus, effects of automatically adjusting the loads are achieved, and no perception and no packet loss of the user can be realized.

The invention relates to a method for increasing the reliability of RSVP-TE tunnel. The downstream node of the TE tunnel directly sends a Resv information with updated tag value to an upstream node when requiring to change the tag value, and receiving the corresponding new and old tag values before the update is successful. The invention is suitable for unicast MPLS network. In the upstream of anLSP, whatever happened, if tag LABEL used by the device needs to change, traffic interruption will never occur in the process of changing tag in the established LSP, thereby, lost of the message passing the LSP is prevented.

The invention discloses a container cluster delayed shrinkage scheduling method and system and belongs to the container cluster shrinkage scheduling field. The method comprises the following steps: 1) an agent monitoring module monitors in real time performance index and health status data of a container bearing a service and sends the result to a scheduling module; 2) the scheduling module judges whether the reported performance index and the health status data surpass preset threshold values, if so, sends an instruction to the agent monitoring module to create a new container, or otherwise, judges whether there is a newly-created container, and if there is the newly-created container, turn to the step 3); and 3) the scheduling module judges whether the performance index is smaller than the preset threshold value, if so, a load balancer stops allocating service traffic, and after the data is processed, the scheduling module issues an instruction to delete the new container, or otherwise, turn to the step 1). The whole system is prevented from the detect of data loss of an existing mode through delay and TCP resetting, thereby ensuring that the cases of packet loss and brief interruption of services are not caused in the load balancing configuration update process to the maximum degree.

The invention discloses a method and a system for rapidly and remotely monitoring vibration parameters of a steam turbine generator unit in an online manner. The system mainly consists of a data acquisition unit, an internal communication system, a database server, an external network and a client. The characteristic data acquired by processing the field vibration data through the acquisition unit and an original waveform are directly written into the server database through SQL (structured query language) in an optical fiber transmission mode, the data storage mode, DMA (direct memory access) data acquisition, multi-register data processing and other data processing methods are optimized, and the vibration parameters of the steam turbine generator unit are rapidly and remotely monitored in an online manner.

The invention relates to a seamlessly connected kernel data packet acquisition technology. The technology comprises the following operation steps: firstly, driving is performed on a kernel registration network intermediate layer; secondly, data packets are cached in network intermediate layer driving in a blocked way, blocked data is stored in a queue, and each data cache is set to be 2M; thirdly, when a data traffic peak value exceeds a data packet disc writing speed, a data storage queue can automatically apply memory from a system, so as to meet the storage requirements, when the data traffic peak value is recovered, data cache blocks used for a long time can be released, and the data storage queue can be automatically adjusted according to data traffic; fourthly, when a thread is started in a kernel to read blocked data in a cache queue, and when the quantity exceeds the designated data packet quantity, the blocked data cache is written in disc files in order; fifthly, the blocked data is written in a disc according to a PCAP file format.

The invention discloses a streaming media transmission self-adaptive system in a wireless network system, belonging to the technical field of video monitoring, which consists of a video coding module, a streaming media sending module and a controlling module, wherein the video coding module is connected with the streaming media sending module; the streaming media sending module is connected with the controlling module; and the controlling module is connected with the video coding module. According to the self-adaptive system, the network service quality is controlled by a front-end module; according to the dynamic of the current network status, a coder is regulated, so that a generated code flow is suitable for the transmission of the current network; based on a transmission control protocol (TCP) transmission, the self-adaptive system has the advantages of good video effect of the client side, no vibration, few mosaic, short time, no packet loss and stable and reliable operation, and is capable of saving a great amount of network flow expenses caused by the packet loss.

This invention provides an optical burst / packet exchange structure without head block, which separates burst data of different wavelengths at the entry port with a WDM then to transform it to any wavelengths according to the dispatch with a wavelength converter to be selected on any FDL in P group by 1xp optical switch, finally to be sent to a related exit port from the selected FDL to reach the aim of switching the burst data of any wavelength of any entry port to any wavelength of any exit port via a controlled time delay.

The invention discloses a Gigabit and 10-Gigabit Ethernet intercommunication system and method. The Gigabit and 10-Gigabit Ethernet intercommunication system comprises a Gigabit Ethernet transceiver interface module, a 10-Gigabit Ethernet transceiver interface module and a logic module. The logic module is configured between the Gigabit Ethernet transceiver interface module and the 10-Gigabit Ethernet transceiver interface module, and is used for gathering Gigabit Ethernet traffic from the Gigabit Ethernet transceiver interface module to the 10-Gigabit Ethernet transceiver interface module and outputting the Gigabit Ethernet traffic, and equally allocating 10-Gigabit Ethernet traffic from the 10-Gigabit Ethernet transceiver interface module to the Gigabit Ethernet transceiver interface module and outputting the 10-Gigabit Ethernet traffic. Compared with the prior art, the Gigabit and 10-Gigabit Ethernet intercommunication system and method solve a problem that traffic cannot get access to a network device because of incompatibility with a 10-Gigabit Gigabit interface on a selected network hardware device in a Gigabit or 10-Gigabit Ethernet traffic environment, and are reasonable in design, simple, feasible, good in practicality.

The invention provides a method and a device for resolving co-frequency interference, which belong to the technical field of information. The method comprises the following steps. In the process of transmitting a first packet from a first communication module in a terminal device to a first external terminal device in connection with the first communication module, when a second communication module in the terminal device is monitored to start to transmit a second packet to a second external device in connection with the second communication module, the transmission of the first packet is then halted. When the second packet transmission is completed, the transmission of the first packet is resumed. In the invention, a higher transmission priority is given to the second packet with a smaller amount of data so that the transmission of the first packet with a larger amount of data can be resumed only after the transmission of the second packet is completed. This does not cause packet loss for the co-frequency interference resulting from the same communication band of the first communication module and the second communication module, so that the first terminal device can communicate effectively with the second external communication device.

The invention provides a message forwarding method and device, and the method comprises the steps: marking a message with the priority being lower than the priority of a to-be-forwarded message in a leaky bucket buffer memory when the leaky bucket buffer memory cannot accommodate the to-be-forwarded message; discarding the marked message in the leaky bucket buffer memory, so as to enable the to-be-forwarded message to enter the leaky bucket buffer memory for forwarding. According to the invention, the method solves a problem in the related technologies that the forwarding of a message with thelower priority causes the discarding of a message with the higher priority, enables the message with the higher priority not to be discarded in an SP scheduling scene, improves the service quality ofkey services, and improves the satisfaction of customers.

The invention discloses a cell reselection method for a group calling terminal. The method includes steps of 1, an access network performs group calling parameter configuration through system broadcast or a group calling dedicated control channel; 2, according to pilot frequency measurement configuration, after pilot frequency measurement start conditions are met, the group calling terminal starts pilot frequency measurement according to pre-configuration parameters obtained from the access network; 3, according to the reselection configuration of the group calling cell, after the pilot frequency cell reselection conditions are met, the group calling terminal starts a pilot frequency cell reselection process, selects a pilot frequency cell for residence and receives downstream group calls. The method provided by the invention solves a problem of downstream group calling data transmission loss in a pilot frequency cell selection process performed by using the cell reselection method by the cluster group calling terminal in an LTE wideband clustering system and improves data transmission reliability.

The invention provides a dynamic bandwidth allocation method and related equipment. The method comprises the following steps of: by dynamic bandwidth allocation equipment, receiving a bandwidth request message from bandwidth request equipment by at least two access ports of aggregation equipment, wherein the bandwidth request message comprises requested bandwidth information, allocating bandwidthinformation to the bandwidth request equipment according to the bandwidth information and the residual bandwidth information of an uplink output port of the aggregation equipment, wherein the residualbandwidth information is the difference between the limited bandwidth information of the uplink output port and the allocated bandwidth information, and sending a response message to the bandwidth request equipment through an access port. According to the method, the bandwidth request messages sent by all the bandwidth request equipment can be globally scheduled, the bandwidth information is globally and dynamically allocated, and the problems of uplink congestion and packet loss in the system and high power consumption cost of the devices are avoided.

The invention discloses a message processing method and device, and the method comprises the steps: determining a fault switching port identifier if a fault switching board is monitored, generating aset message carrying the fault switching port identifier, and adding the set message into a to-be-forwarded queue; determining a first switching port identifier corresponding to a to-be-forwarded message obtained from the to-be-forwarded queue according to a load balancing table, and determining whether the to-be-forwarded message is the set message; if so, writing the fault switching port identifier into a fault switching port identifier record table and then discarding the fault switching port identifier; if not, determining whether the fault switching port identifier record table comprisesthe first switching port identifier, and if so, selecting a second switching port identifier from other switching port identifier sets corresponding to the first switching port identifier in a fast switching table, and sending the to-be-forwarded message through a switching port corresponding to the second switching port identifier, and if not, sending the to-be-forwarded message through the switching port corresponding to the first switching port identifier. The scheme greatly reduces the number of lost packets.

The invention relates to a control device for a low-background alpha-beta measuring instrument. The device comprises a nuclear pulse pretreatment unit, an FPGA (Field Programmable Gate Array) / CPLD (Complex Programmable Logic Device)-based master control calculation unit, a communication interface unit and a high voltage and threshold control unit; the FPGA / CPLD-based master control calculation unit is respectively connected with the nuclear pulse pretreatment unit, the communication interface unit and the high voltage and threshold control unit; and high voltage and threshold control unit is connected with the nuclear pulse pretreatment unit. The control device has various characteristics such as parallel and high-speed treatment, real-time synchronous treatment on multipath signals, convenience in expansion, high integration level, capability of reducing the amount of peripheral chips and enhancing the stability and the like.

The invention provides a virtual remote desktop access management method / system, a medium and an electronic device. The virtual remote desktop access management method comprises the steps of integrating an operation system with a virtual remote desktop access function; programming the operation system to the electronic device, thereby configuring the electronic device as a server for a client to remotely access; and when a transmission protocol resource locator is received, providing virtual remote desktop access. A flat panel detector can be subjected to remote desktop access through a browser conveniently; a hardware display interface does not need to be designed for realizing desktop display; the dependency of access of the flat panel detector on a network condition is reduced; the dependency on custom client software is reduced; and a one-stop solution is provided for a user.