34results about How to "Reduce the likelihood of disruption" patented technology

The invention provides a self-adapting modulating and encoding method and device based on channel second-order statistics in OFDM (orthogonal frequency division multiplex) system, and its characteristic: by character signal-to-noise ratio (SNR) variance, dynamically selecting suitable adapting time window; and using a two-grade moment criterion, i.e. according to SNR average value and variance, selecting suitable modulating and coding style (MCS) to accurately convert SNR to MCS, thus enhancing the applicability of self-adapting modulation and coding and reducing the possibility of system interruption, and therefore, bringing about better error bit rate property.

The invention relates to a satellite network channel coding method, and belongs to the field of satellite channel coding. The problem that the complexity of the coding and decoding in the LT code is relatively high, and when the number of input symbols is small, the decoding performance drops significantly. The technical point is as follows: cascading an LT code with an LDPC code as channel codingof the satellite network, wherein the degree distribution in the LT code adopts truncated robust soliton fixed degree distribution C_RSSD. The effect is that when the truncated robust soliton fixed degree distribution is used for performing LT coding and decoding, the probability of small values can be increased, the average degree value can be reduced, the coding and decoding overhead can be reduced, and the decoding success rate can be improved.

The invention provides a VPN security gateway, comprising an internal network communication unit, an external network communication unit, an encryption and decryption unit and a management unit, wherein the internal network communication unit is used for transmitting internal network data to the encryption and decryption unit and transmitting decrypted data that is transmitted from the encryption and decryption unit to an internal network; the external network communication unit is used for transmitting external network data to the encryption and decryption unit and transmitting encrypted data that is transmitted from the encryption and decryption unit to an external network; the encryption and decryption unit is used for correspondingly processing the corresponding data information transmitted from the internal network communication unit and the external network communication unit; and the management unit is used for uniformly managing the internal network communication unit, the external network communication unit and the encryption and decryption unit, and is used for monitoring the working states of the internal network communication unit, the external network communication unit and the encryption and decryption unit. According to the VPN security gateway provided by the invention, the isolation performance of the VPN security gateway can be improved.

The invention discloses a cloud-side-terminal collaborative meteorological intelligent warning system. The system includes a cloud for large-area weather warning, an edge terminal for small-area weather warning, and a terminal for collecting and displaying results; the cloud slave terminal The collected meteorological data is analyzed for large-scale meteorological early warning and intelligent meteorological early warning model training, and sent to the edge terminal; the edge terminal obtains the corresponding required data from each terminal according to the intelligent meteorological early warning model obtained from the cloud, and inputs the intelligent meteorological early warning model and perform model calculations to obtain meteorological early warning analysis in small areas; and to analyze comprehensive weather early warning information for large and small areas in combination with the characteristics of the edge end; and to upload small area and comprehensive weather early warning information to The cloud storage is used for large-area weather early warning, and the comprehensive weather early warning information is sent to the terminal for collection and result display for early warning display. The weather early warning system of the invention has high precision and fast speed.

The invention discloses a method, a system and a device for switching user equipment (UE) among nodes on a network side, which are used for solving the problem that coordinated multi-point (COMP) transmission continuity cannot be ensured when the UE is switched among the nodes on the network side in the prior art. The method comprises the following steps that: a target node on the network side receives switching request information sent by a source node on the network side where the UE is positioned, determines a COMP cooperation set of the UE in the target node on the network side according to at least one piece of attribute information of the UE carried in the switching request information, and determines at least one node on the network side in the COMP cooperation set, so that the at least one node on the network side performs COMP data transmission with the UE. In the embodiment of the invention, the attribute information of the UE with the COMP cooperation set to be determined is carried in the switching request information, so that the target node on the network side quickly determines the COMP cooperation set of the UE according to the attribute information of the UE and the COMP transmission continuity in the switching process can be ensured.

The invention belongs to the technical field of cigarette paper dispensing, and particularly relates to an automatic heating dispensing mechanism. The automatic heating dispensing mechanism comprisesa dispensing valve used for smearing latex on cigarette paper, an adjusting seat which is connected with the dispensing valve through a first connecting piece, and is provided with an X-direction adjusting rod, and a connecting plate which is connected with the adjusting seat through a second connecting piece, and is provided with a Z-direction adjusting rod; and hand wheels are mounted at the outer end parts of the X-direction adjusting rod and the Z-direction adjusting rod. According to the automatic heating dispensing mechanism, the position adjusting function is achieved through the arrangement of the X-direction adjusting rod and the Z-direction adjusting rod, the dispensing valve can be finely adjusted, the working precision of the dispensing valve is improved, the efficiency is further improved while the precision is guaranteed, the structural design is reasonable, operation is safe and reliable, and the practicability is high.

A device and method for selectively outputting packaged multiplexing stream (PMS) are disclosed in the present invention. The method comprises: a codec unit decodes the inputted asynchronous serial interface (ASI) streams, obtains multiple PMSs by parsing, checks the abnormality of the packet header information of the PMSs, and sends the abnormality-checking result and the multiplex frames obtained by parsing to a processing unit; the processing unit parses the multiplex frames of the PMS; and the codec unit receives the multiplex frames which are parsed by the processing unit and would be sent out, encapsulates them into a PMS and encodes the PMS, and sends the encoding result to the output ASI; or the ASI stream with the best quality is selected and directly sent to the output ASI. The method and device in the present invention enable the selective output of multiple PMSs, and reduce the probability of the back-end device's service breaking off.

The invention relates to a method, a device and an optical module for upgrading the firmware of an optical module, and relates to the technical field of optical communication. The method includes: running firmware; receiving control information of the firmware; storing the control information of the firmware in a first area of ​​the volatile storage area; the first area is an area used to store the control information of the firmware in the volatile storage area; Jumping from running the firmware to running the bootloader program, by running the Bootloader program, the firmware is upgraded, and the cache information generated in the firmware upgrade process is stored in the second area of ​​the volatile storage area; the firmware After the upgrade is completed, jump from running the Bootloader program to running the upgraded firmware, and obtain the control information of the firmware from the first area during the running of the upgraded firmware. The embodiments of the present invention can reduce the possibility of interruption of communication services caused by optical module upgrades.

The invention discloses a self-adapting modulating and coding method in orthogonal frequency division multiplexing system, it includes: the first step, setting original time window; the second step, obtaining adapted time window based on time window parameter; the third step, based station evaluates average RSSI value and standard difference of down sending time window; the forth step, inquiring AMC judging graph to obtain corresponding modulating and coding mode based on average RSSI value and standard difference; the fifth step, evaluating error code ratio, and comparing with expected errorcode ratio: if evaluated error code ratio <= expected error code ratio, turn to step six; If else, adjust time window parameter, turn to step two; the sixth step, modulate and code. The invention canobtain modulating and coding mode which fits for current channel, increases actual effect of AMC, decreases possibility of interrupt of system, increases spectrum efficiency, at the same time error ratio can be decreased.

The invention provides a target track automatic transfer method in combined training of multiple simulation training systems. The method comprises the following methods: generating a first estimated track by a track initiating end in accordance with a preset track and a first preset track equation, and judging whether an aircraft enters an automatic transfer adaptive track or not; when it judges that the aircraft enters the automatic transfer adaptive track, transmitting the first estimated track and a real track to a track receiving end via the track initiating end; and correcting a second preset track equation by the track receiving end in accordance with received data and judging whether the aircraft reaches a transfer point or not, and when it judges that the aircraft reaches the transfer point, generating a second estimated track by the track receiving end in accordance with the first estimated track and the second preset track equation. According to the technical scheme, the reliability of track automatic transfer among a plurality of simulation systems is improved, possibilities of point jump, point loss or interception, which can be caused when track transfer is conducted among the various simulation systems, are reduced, and the accuracy and reality of track simulation of the multiple simulation training system are improved.

A propagation loss measuring unit (207) measures the propagation losses of cells. A propagation loss comparator unit (208) compares the propagation losses of the cells. A transmission slot control unit (209) controls, in accordance with a switching period informed from a base station and acquired by a changing period acquiring unit (206), a data composing unit (211) and a spreader unit (213) so that a signal is transmitted to the base station located in the cell whose propagation loss is smaller. That is, a mobile station (100) transmits an individual communication channel signal according to the propagation loss by appropriately changing the time slot assignment condition in the change cycle informed from the base station.

The embodiment of the invention discloses a cell reselecting method and equipment, relating to the technical field of wireless communication, and beings used for improving the continuity when user equipment (UE) receives multimedia broadcast multicast service (MBMS) data. In the cell reselecting method, when receiving the MBMS data or determining that MBMS data in which a terminal is interested exists currently, the terminal sets the priority level of the frequency point at which the MBMS data are transmitted to be highest, and forbids the MBMS data to be reselected to a closed user group (CSG) cell and / or forbids the automatic CSG search function, thus the continuity when the UE receives MBMS data is improved.