56results about How to "Meet networking requirements" patented technology

The invention discloses a method and a device for selecting time synchronization sources. The method includes: allowing a boundary clock device or a slave clock device to select sources according to any parameters of clock sources, such as primary reference clock source quality level, primary reference time source quality level, co-existence or no co-existence of primary reference clock sources and primary reference time sources in a device, device port clock priority parameter, message delay change indicator, and time synchronization link symmetry indicator. The method and device are applicable to time-synchronized source selection schemes, multiple relevant parameters can be fully utilized to select sources, and accordingly source selection reasonability is improved. A protection mechanism is also achieved for a time synchronization network and used for protecting switching, certain special faults of the time synchronization network can be timely sensed and treated, interaction between a clock synchronization network and the time synchronization network is supported, flexibly in switching the time synchronization network is improved and time synchronization performance is protected from influence.

The invention relates to the technical field of aircrafts and provides an aircraft and a control method, device and electronic device thereof. The aircraft comprises an aircraft body and a communication relay device arranged on the aircraft body. The communication relay device is suitable for making the aircraft a communication relay node to achieve communication between at least two devices needing communication. Therefore, a communication network between two or more points can be set up through the aircraft. The position of the aircraft is easy to adjust, satisfies the networking requests when barrier exists between the communication points or cable entities cannot be laid. The networking cost is lower than satellite communication.

The disclosed device includes user interface board, main control board and back plate. The said user interface board and main control board through serial bus in high speed are connected to the back plate respectively. The method includes following steps: unitive loadbearing bus is provided through broadband access device; service information in different types is gathered together to the bus; according to their sorts, information is processed, and processed service information is sent to corresponding link. In the invention, bus carries services in different types without need of complex conversion, providing user interface access for services in different types as well as independent service interface. The invention simplifies structural design of back plate, and raises reliability of device.

The embodiment of the invention discloses a method, an apparatus and a system for negotiating a channel, wherein the channel negotiating system comprises the following steps: acquiring channel occupation information; sending a channel negotiating executing frame including a channel switching way to at least one networked network equipment according to the channel occupation information, so that the at least one networked network equipment switches a current working channel according to the channel switching way to generate an idle channel; and receiving a channel negotiating executing confirming frame which is fed back by the networked network equipment, and implementing a networking operation on the idle channel. According to the channel negotiating method provided by the embodiment of the invention, the bandwidth utilizing rate and the data transmission rate are improved.

The invention relates to a semi-peer-to-peer acentric ad hoc network topology establishment method and apparatus for dividing a large number of nodes into two levels of multi-clusters. The ad hoc network topology establishment method comprises the following steps: dividing nodes into a plurality of node clusters, forming a plurality of second level ad hoc networks for the cluster nodes, selecting nodes in each node cluster to form a first level ad hoc network, and obtaining network topology composed of a plurality of ad hoc networks, wherein arbitrary two nodes in the network topology can perform communication. Compared with the problems of limited node number and poor expansibility of the ad hoc network topology in the prior art, the network topology in the embodiment of the invention increases the number of the nodes in the ad hoc networks, and the data transmission and processing among a large number of nodes can be supported. A data link network established based on the ad hoc network topology establishment method provided by the embodiment of the invention comprises a large number nodes, is flexible in architecture and high in expansibility, and thus being suitable for new generation of data link network structures in joint operation of multiple army categories.

The invention relates to a cluster service realization method, a system, a terminal, a base station and a cluster core network dispatch subsystem (DSS). The method comprises the following steps: a RRC connection establishment step; a cluster service context establishment step in which an E-UTRAN and the cluster core network dispatch subsystem (DSS) establish a cluster service context; a configuration step in which the E-UTRAN carries out cluster null interface configuration on a cluster service speaking terminal and a cluster service listening terminal; a paging step in which the E-UTRAN pages the listening terminal according to a paging message of the cluster core network dispatch subsystem; and a cluster service data forwarding step in which the E-UTRAN forwards cluster service data according to the cluster service null interface configuration. By the adoption of the cluster service realization method, the system and the network element of the invention, professional cluster services can be provided without being influenced by a LTE service.

The invention provides an RDSS and wifi based Beidou micro base station dynamic mixed networking method to enable a Beidou micro base station based on Beidou RDSS and wifi combination to realize multi-user access and network construction. According to the method, corresponding flows are provided for RDSS link, wifi link, and RDSS and wifi mixed link scenes respectively. The method can be applied to solve the problems in constructing the layered dynamic mixed network based on the RDSS satellite link and the wifi link, and can be used to realize interconnection and intercommunication of access terminals of the Beidou RDSS micro base station under the condition of heterogeneous network.

A method of transmitting a signaling packet in a communication system with session border controller SBC comprises that: a user device sending a signaling packet with a register request to a signaling static translation function entity in a first network; after the signaling static translation function entity receives the signaling packet, modifying the destination IP address / port number of the signaling packet to the IP address / port number of the signaling control function entity according to a mapping relation of the IP address / port number of the signaling static translation function entity which is preset or obtained by other mode and the signaling control function entity, and modifying the source IP address / port number to the IP address / port number distributed by the signaling static translation function entity itself, and then sending this signaling packet to the signaling control function entity. The signaling static translation function entity sets network address transformation (NAT) table item of the signaling packet of the user device. The table item is the corresponding relation of the IP address / port number in the first network and the IP address / port number distributed by the signaling static translation function entity itself. The signaling control function entity analyzes the signaling packet and sends to the function entity in a second network. At the same time, the invention also discloses a communication system with a Session Border Control (SBC). The invention can effectively prevent from the malice attack on the signaling control function entity in the SBC by the user, and makes the system to be more secure and enables the SBC to be more flexible without the restriction from the networking in the actual network.

The invention discloses a method and a system for testing parking brake performance, which overcome the defect of the method needing to build a parking slope and directly measure the traction force of a parked vehicle, a force cell is connected with the tested vehicle through a wire rope, traction force which accounts for 20 percent of the overall weight of the tested vehicle or 15 percent when the overall weight of the vehicle is less than 1.2 times as heavy as the curb weight is applied on the vehicle according to standard specifications, the parking brake performance is acceptable when thetested vehicle stays still, otherwise is unacceptable, and the acceptability or unacceptability of the parking brake performance can be judged on an on-site screen or remotely transmitted to a computer and judged in the form of reading. The testing system is small and does not require the building of a special-purposed slope, thus dispensing with land occupation and capital expenditure needed by the slope method to build the testing slope and creating favorable conditions for various vehicle testing stations to carry out the testing operation. Because the testing system adopts a zigbee wireless communication mode for the first time, the testing system reduces electricity consumption, is light, and does not have external cables.

The present invention provides a method for realizing load sharing. The method includes the following steps: defining the priorities of several links between the two entities, and storing the information in the first entity; The link with the highest required priority is selected from the links connected to the process of the second entity, and the signaling is carried on the link; the signaling is transmitted to the second entity via the link, and the second entity is sent by the second entity. Process output after processing. On the basis of the three service flow sharing methods of the active / standby method, the load sharing method and the broadcasting method provided in the SIGTRAN standard protocol, the present invention also proposes a method for realizing the service flow sharing by using the link priority, which is more convenient for users. A method for selecting a service bearer is provided, so that the service switching is faster, and the flexibility of the system application is also improved.

The invention provides an automatic matching method for radio frequency channels of a multichannel distributed antenna system. The automatic matching method for the radio frequency channels of the multichannel distributed antenna system comprises steps of diving optical fiber transmission resources into a plurality of signal transmission units which have fixed bandwidth and mapping to any radio frequency channel; setting up a carrier wave information chart through a main AU (Access Unit) according to configuration information of the radio frequency channels and sending the information chart to all RUs (Remote Units); setting up a mapping list of main AU radio frequency channels and the signal transmission units through the main AU according to the carrier wave information chart; setting up a mapping list between auxiliary radio frequency channels and the signal transmission units when the carrier wave information chart is received; setting up a mapping list between the radio frequency channels and the signal transmission units according to the operating frequency band range of a power amplifier module of a local machine and in combination with carrier wave configuration information when the RUs receive the carrier wave information chart form the main AU. The automatic matching method for the radio frequency channels of the multichannel distributed antenna system has the advantages of providing a carrier wave free dispatching method for a multimode and multi-standard DAS (Data Acquisition System), increasing the extendibility of the system and enabling few parts to be changed for a same set of software and hardware system to satisfy networking requirements of various application scenarios.

This invention discloses a method to realize SMS intercommunication based on mixed discharging number. Wherein, creating correlation between user's logic and physical number and user's SMS center number in SHLR; when transmitting original SMS, the SMS center request to find the target SMS center address in SHLR according to received request; SHLR returns target SMS center address according to obtained correlation; original center transmits SMS to target center to send SMS to target user. It also discloses a opposite communication network system.