37results about How to "Transmission priority" patented technology

The invention provides a video transmission method and a device with high fault tolerance and low latency which is applied to deep space communication, wherein, the method comprises a video coding step, a base-layer data transmission step, an enhancement-layer data transmission step and a video decoding step. In the video coding step, acquired video data is processed through scalable video coding, and a scalable video coding code stream includes a base-layer code stream and at least an enhancement-layer code stream; in the base-layer data transmission step, the base-layer code stream in the scalable video coding code stream is extracted and transmitted by using an automatic retransmission request method, and the network packet loss rate is calculated when the transmission of the base-layer code stream is finished; in the enhancement-layer data transmission step, the enhancement-layer code stream is extracted, the obtained parameter is calculated for channel coding and transmission according to the packet loss rate by combining the channel coding technology for Athlon code, and the received enhancement-layer code stream is processed through channel decoding; and in the video decoding step, the received base-layer code stream is processed through video decoding, and the enhancement-layer code stream which is processed through channel decoding is processed through video decoding by combining the received base-layer code stream.

The invention discloses a high-speed rail mobile communication system and a working method thereof. The system comprises a vehicle-mounted communication system, a rail communication system and a ground communication system, wherein the vehicle-mounted communication system comprises a vehicle-mounted base station, a light distribution antenna system and a vehicle-mounted ultra-high frequency wireless wide-band communication machine; the vehicle-mounted ultra-high frequency wireless wide-band communication machine is in communication connection with the vehicle-mounted base station; and the vehicle-mounted base station forms a vehicle-mounted access network in a carriage through the light distribution antenna system. The rail communication system comprises a rail optical cable, a ground ultra-high wireless wide-band communication machine and an optical transmission network, wherein the rail optical cable is laid along the rail and used for transmitting a communication signaling and a communication content, the ground ultra-high wireless wide-band communication machines are sequentially accessed along the optical cable, the ground ultra-high wireless wide-band communication machine is in communication connection with the ground ultra-high wireless wide-band communication machine corresponding to the ground, and the ground ultra-high wireless wide-band communication machines are respectively in communication connection with the corresponding ground communication system through the optical transmission network.

The invention provides a communication method based on a WLAN access control mechanism and application. Collected data are transmitted in a transmission mode based on the WLAN access control mechanism, the WLAN access control mechanism is that a user priority is added in an EDCA mechanism of an MAC layer, the added user priority is set to be the highest priority, and the user priority can preferentially gain a channel access right. The communication method based on the WLAN access control mechanism is applied to a vehicular communication system, when safety information during vehicle running accesses the channel, the safety information can preferentially gain the channel access right, competition between the safety information and other data types is avoided, therefore, time delay of the safety information is reduced, transmission of the safety information in the network is smoother, road accidents caused by the fact that the safety information is not received in time are reduced, and meanwhile congestion of the ground transportation network is reduced.

In a network having an L2SW in which uplink VLAN is set, a transfer delay of a voice call packet is prevented. In a process of establishing a session between terminals ( 5 ), a packet transfer device ( 1 ) stores information capable of specifying a sending terminal ( 5 - 1 ) and a receiving terminal ( 5 - 2 ) and a correspondence relation (user connection information) to a connection port into a table. A SIP message of a session control packet communicated between the terminals ( 5 ) is snooped, and a destination IP address, a transmission source IP address, a destination port number, a transmission source port number, a connection port etc. are stored into the table. In a case where an RTP packet as voice data is received after the session is established, the packet transfer device ( 1 ) performs a loopback transfer or transfers it to an uplink port in accordance with the table.

The invention relates to a carrier aggregation based method for separating a control plane from a user plane. Base stations include a macro base station and micro base stations which are used for establishing a communication connection with user equipment. The method comprises the steps that the macro base station and the micro base stations are respectively set as a primary serving cell (Pcell) and secondary serving cells (Scells); a control signal uses the scheduling grant of the macro base station and is sent prior to a first MAC CE signal; in the previous step, if the scheduling grant of the macro base station is sufficient to support the transmission of the first MAC CE signal besides the part used by the control signal, the macro base station sends the first MAC CE signal, otherwise, the macro base station sends the first MAC CE signal to the micro base station; and the first MAC CE control signal uses the scheduling grant and is sent prior to data. According to the method, optimal allocation of the scheduling grant of the macro base station is realized while high-level mobility management is guaranteed.

The invention discloses a mapping method. The method comprises the following steps: a distributed unit IAB donor DU in an access and return integrated host node receives a signaling message and firstindication information sent by a centralized unit IAB donor CU in a network element of the access and return integrated host node, wherein the first indication information is used for indicating the signaling type of the signaling message;the IABdonor DU maps the signaling message to a transmission channel corresponding to the signaling message according to the signaling type of the signaling message and sends the signaling message to an access backhaul integrated node IAB node, and the signaling type comprises an F1AP message related to the access terminal or an F1AP message unrelated to theaccess terminal. According to the method, the node maps the signaling message to the corresponding transmission channel and sends the signaling message to the next node after receiving the signaling message, so that the priorities of the signaling messages can be distinguished, and the signaling transmission quality is improved.

The invention discloses a method for applying wireless priority based on an IP (internet protocol) address in a train control system. The method is characterized in that a sub-network and a corresponding IP address are distributed to wireless train control system equipment; safety equipment is considered as a safety sub-network, and a non-safety equipment is considered as a non-safety sub-network; and the data of the safety sub-network is preferentially transmitted through a wireless channel. With the adoption of the method disclosed by the invention, the wireless transmission mode in the data communication subsystem is optimized based on the property of the information transmission of the train control system.

The invention is applicable to the technical field of computers, and provides a conference information transmission method which is applied to a conference system with a server and a plurality of conference terminals, each conference terminal corresponds to a network node, and the method comprises the following steps: verifying a conference access request of the conference terminal; when the conference access request passes verification, the conference terminal accesses a virtual conference room through a network node, and the conference terminal receives and / or sends audio and video data; detecting the network transmission rate of each network node to the audio and video data in real time; when the network transmission rate of the network node is lower than a set threshold value, the conference terminal corresponding to the network node is controlled to receive and / or send the audio data or the video data, and the method and the device have the advantages that when the network is stuck, priority transmission of the audio data can be guaranteed, and normal proceeding of a conference can be effectively guaranteed.

The invention discloses a video trunk line management method and device for a video monitoring system. The method comprises the steps of determining all cascading channels from a monitoring point location monitoring device corresponding to the playing request to a target monitoring device according to the playing request of a current user; judging whether the cascading channels satisfying a monitoring point location video importance condition exist in all the determined cascading channels or not; if the cascading channels exist, selecting the cascading channel with the optimum video trunk line quality as the cascading channel corresponding to the current user in the cascading channels satisfying the monitoring point location video importance condition. The cascading channels are selected through adoption of the monitoring point location video importance condition, and the cascading channel with the optimum video trunk line quality is selected in the cascading channels satisfying the monitoring point location video importance condition, so a video trunk line is managed reasonably, and the video image effect played by the target monitoring device is good.

The invention discloses a high-speed rail mobile communication system and a working method thereof. The system comprises a vehicle-mounted communication system, a rail communication system and a ground communication system, wherein the vehicle-mounted communication system comprises a vehicle-mounted base station, a light distribution antenna system and a vehicle-mounted ultra-high frequency wireless wide-band communication machine; the vehicle-mounted ultra-high frequency wireless wide-band communication machine is in communication connection with the vehicle-mounted base station; and the vehicle-mounted base station forms a vehicle-mounted access network in a carriage through the light distribution antenna system. The rail communication system comprises a rail optical cable, a ground ultra-high wireless wide-band communication machine and an optical transmission network, wherein the rail optical cable is laid along the rail and used for transmitting a communication signaling and a communication content, the ground ultra-high wireless wide-band communication machines are sequentially accessed along the optical cable, the ground ultra-high wireless wide-band communication machine is in communication connection with the ground ultra-high wireless wide-band communication machine corresponding to the ground, and the ground ultra-high wireless wide-band communication machines are respectively in communication connection with the corresponding ground communication system through the optical transmission network.

The present invention discloses a priority forwarding method based on the number of paths. A backoff mechanism of the method is that once forwarding nodes encounter the data collision status, the sizes of the backoff windows of the collided forwarding nodes are decided by the numbers of the selectable paths of the forwarding nodes, the retransmission time of the nodes is staggered by the different numbers of the forwarding paths, and the data of the forwarding node having the less forwarding paths is sent preferentially, thereby guaranteeing that the data of the forwarding node having the less paths can be sent out, also avoiding that the data transmission is too congested in a part of regions, and also being able to utilize the bandwidth of a whole network effectively to increase the throughput of the network and improve the data reception rate. The priority forwarding method based on the number of paths of the present invention is based on a competitive MAC protocol, by the reasonable backoff mechanism, enables the flow load of the node data to be balanced, the bandwidth to be utilized fully and the data transmission power consumption to be reduced, at the same time, avoids the interference among nodes, and can be effectively applied to the network needing to acquire data rapidly.

The invention discloses a method, system and implicit content server for data transmission on the basis of cloud computing. The method includes: the implicit content server receives conditions of files owned by common nodes of common node periodical reports in a network; resource index of each data block of each file is calculated according to the conditions of the files owned by the common nodes; bitmap information corresponding to most scare front K data blocks of each file is set as visual common nodes according to the resource index, bitmap information corresponding to the surplus data blocks is set as invisible common nodes, and the value of K is adjusted periodically and dynamically according to current bandwidth using conditions of the implicit content server and file bandwidth occupancy thresholds configured for each file; and bitmap information of each file in the implicit content server is respectively issued to the common nodes in the network so as to enable the common nodes to request the data blocks from the implicit server according to the issued bitmap information.

The invention discloses an image transmission method, device and equipment of a remote operation system and a medium, the method is applied to a local operation end, the remote operation system comprises the local operation end and a remote operation end, and the method comprises the following steps: acquiring an initial ultrasonic image corresponding to a target object at the local operation end, performing feature extraction on the initial ultrasonic image to obtain a target ultrasonic image; determining an ultrasonic sub-image corresponding to the target ultrasonic image based on the knowledge graph, and determining an image value of the ultrasonic sub-image according to the ultrasonic image evaluation dimension; and transmitting the ultrasonic sub-image to a remote operation end according to the image value. Based on the technical scheme, the image is divided into the sub-images of different areas, the image values of the sub-images are determined, and the transmission methods corresponding to the sub-images are determined according to the image values, so that the preferential transmission of the high-value image is ensured, the overall bandwidth occupation and the system load are reduced, and the transmission efficiency is improved. And a key technical support is provided for the accuracy and safety of a remote operation.

The embodiment of the invention provides a hybrid automatic repeat request response transmission method and equipment. The method comprises the following steps: determining priorities of HARQ-ACKs carried by one or more PUCCH resources; and according to the priority of the HARQ-ACK, transmitting the HARQ-ACK. In the embodiments of the present invention, when a plurality of HARQ-ACKs are respectively carried on different PUCCH resources for transmission, the HARQ-ACKs can be transmitted according to the priorities of the HARQ-ACKs, so that the HARQ-ACKs with high priorities can be transmitted preferentially, thereby ensuring the preferential transmission of services with high priorities.

The invention discloses a method for applying wireless priority based on an IP (internet protocol) address in a train control system. The method is characterized in that a sub-network and a corresponding IP address are distributed to wireless train control system equipment; safety equipment is considered as a safety sub-network, and a non-safety equipment is considered as a non-safety sub-network; and the data of the safety sub-network is preferentially transmitted through a wireless channel. With the adoption of the method disclosed by the invention, the wireless transmission mode in the data communication subsystem is optimized based on the property of the information transmission of the train control system.

The invention provides a data transmission scheduling method, a system and a device for IP storage area network (SAN) storage, wherein the method comprises setting sub cache on a storage front end server end aiming at each channel, setting priority for each channel according to actual requirements, extracting data from the sub cache of each channel according to the priority of each channel and according to a preset priority strategy, and sending internet small computer system interface (iSCSI writing request) aiming at each data and according to extracting sequence, or setting request list aiming at each channel on an IP SAN storage device end, setting priority for each channel according to actual requirements, and extracting iSCSI writing request from the request list of each channel according to the priority of each channel and according to the preset priority strategy, and answering each iSCSI writing request and getting ready for receiving response according to the extracting sequence, thereby satisfying different data storage requirements of each channel.

The invention discloses an unmanned aerial vehicle surface reconstruction method based on point cloud semantic communication, and belongs to the technical field of point cloud semantic communication. According to the method, the problem that in the surface reconstruction process of the unmanned aerial vehicle, due to the defects of limited flight time and computing resources of the unmanned aerial vehicle, information needs to be completely transmitted in a transmission bandwidth limited scene, so that surface reconstruction is smoothly carried out is solved. The invention provides a new semantic communication algorithm based on the point cloud, an auto-encoder architecture with category importance permission is introduced for selective transmission, and unnecessary data transmission is reduced, so that the bandwidth is saved, and information more related to a surface reconstruction task is transmitted. Secondly, an end-to-end training system framework is developed, joint optimization of deep learning is utilized, data transmission and surface reconstruction processes are simplified, and the overall efficiency and reconstruction precision of the system are improved. Wide verification and simulation results prove that the framework can complete surface reconstruction with less point cloud data transmission quantity, the superiority of the framework in efficiency and performance is verified, and the application of the system in different data types and scenes is expanded.

The invention provides a ring network data communication architecture based on an optical fiber vehicle-mounted Ethernet, and the architecture comprises an electronic control unit and a plurality of sensors; the electronic control unit and the plurality of sensors are sequentially connected end to end through an optical fiber vehicle-mounted Ethernet bus to form a ring network; the data sent by the electronic control unit is transmitted, forwarded and converged to the electronic control unit one by one in a one-way mode through the sensors of the ring network to achieve input and output of the data, and transmission data of the sensors in the ring network nodes are concentrated in data frames. Compared with a traditional communication mode for transmission, the electronic control unit in the invention can realize data communication circulation in the ring network node only through one-time receiving and transmitting, a high transmission rate of 1-10G / s can be obtained, and the communication efficiency of the network node is improved at the same time.

The invention is suitable for the technical field of data transmission, and provides a network transmission state intelligent monitoring system based on data feature mining. The system comprises a feature mining transmission unit, a speed adjusting unit and a transmission monitoring unit. According to the network transmission state intelligent monitoring system based on data feature mining, through cooperation of the feature mining transmission unit, the speed adjusting unit and the transmission monitoring unit, data can be divided into timeliness data and non-timeliness data, the timeliness data are transmitted preferentially, and the transmission speed is adjusted, so the rapid transmission of the timeliness data is guaranteed, all transmission of the non-timeliness data is guaranteed in the idle time of the system, and accumulation of the non-timeliness data is avoided, so that priority arrangement of the data is realized, the timeliness data and the non-timeliness data can be transmitted in proper time, rapid response of the system is realized, and the system reliability is enhanced.

The invention discloses a priority forwarding method based on path number. The back-off mechanism of this method once the forwarding node encounters a data collision conflict, the size of the back-off window of the collided forwarding node will be determined by the number of paths that the forwarding node can choose, and the retransmission time of the node is staggered by the difference in the number of forwarding paths. Let the data of forwarding nodes with fewer forwarding paths be sent first, which can not only ensure that the data of forwarding nodes with fewer paths can be sent out, but also avoid excessive congestion in some areas of data transmission, and effectively use the bandwidth of the entire network. Increase the throughput of the network and improve the data receiving rate. The present invention is based on a competition-based MAC protocol. By adopting a reasonable back-off mechanism, the node data can balance the flow load, make full use of the bandwidth, reduce the power consumption of data transmission, and avoid inter-node interference at the same time. in the network.

This invention discloses a communication method and system for crew monitoring data. The method includes: real-time acquisition of various types of crew monitoring data through sensors; determining indicator parameters for each monitoring data based on data characteristics; calculating the importance weight of each crew monitoring data, wherein the importance weight guides the dynamic adjustment of corresponding quantization levels and bandwidth allocation; determining an adaptive quantization level based on the importance weight of each crew monitoring data and the current bandwidth situation, and dynamically allocating bandwidth resources for each data stream; and quantifying various types of crew monitoring data according to the aforementioned importance weight and adaptive quantization level. This invention improves the efficiency and reliability of crew monitoring data transmission by dynamically assessing data importance and optimizing quantization and bandwidth allocation, ensuring priority transmission of critical data, saving bandwidth resources, and enhancing the real-time performance and stability of system data transmission.

The invention discloses a mapping method, which comprises the following steps: a distributed unit IAB donor DU in an access and return integrated host node receives a signaling message and first indication information sent from a centralized unit IAB donor CU in an access and return integrated host node network element, and the first indication information is used for indicating the signaling type of the signaling message; the IAB donor DU maps the signaling message to a transmission channel corresponding to the signaling message according to the signaling type of the signaling message and sends the signaling message to an access and return integrated node IAB node, and the signaling type comprises an F1AP message related to the access terminal or an F1AP message unrelated to the access terminal. In the application, after receiving the signaling message, the node maps the signaling message to the corresponding transmission channel and sends the signaling message to the next node, so that the priority of the signaling message can be distinguished, and the signaling transmission quality is improved.

The invention discloses an intelligent derivative variable construction method in data modeling. The intelligent derivative variable construction method comprises the following steps that a mobile terminal collects original data and divides the collected original data into static data, behavior data and transaction data; the mobile terminal receives the information sending priority information; the mobile terminal receives a mobile terminal identity identifier, and the mobile terminal identity identifier is generated by the transmission receiving point and distributed to the mobile terminal; the mobile terminal determines a sending sequence based on the information sending priority information; and the mobile terminal determines sending random waiting time and sends a random access requestmessage to the transmission receiving point according to the sending sequence after sending the random waiting time, and the random access request message comprises the sending random waiting time and the mobile terminal identity identifier. By classifying the mobile terminals, it is ensured that some time delay sensitive data can be transmitted preferentially.

The invention discloses a WBAN information interaction method, device and system, wherein the method includes: Hub sends a beacon frame to a node and receives information sent by a node according to a preset superframe structure; wherein, the superframe structure Including three stages, the first stage includes the first beacon period, the first time slot period and the second time slot period, the first time slot period and the second time slot period are respectively used for nodes to send emergency services and ordinary services ; The second stage includes a second beacon period and a third time slot period, and the third time slot period is used for node supplementary transmission services; the third stage includes a fourth time slot period, and the fourth time slot period is used for A node sends a sleep request and / or an access request. Through the present invention, the problems existing in the signaling transmission structure of the WBAN in the related art are solved, the probability of transmission failure is greatly reduced, the time slot is utilized to a greater extent, and the priority transmission of emergency services is guaranteed as much as possible, while reducing node and network energy consumption.

The invention discloses a method, system and implicit content server for data transmission on the basis of cloud computing. The method includes: the implicit content server receives conditions of files owned by common nodes of common node periodical reports in a network; resource index of each data block of each file is calculated according to the conditions of the files owned by the common nodes; bitmap information corresponding to most scare front K data blocks of each file is set as visual common nodes according to the resource index, bitmap information corresponding to the surplus data blocks is set as invisible common nodes, and the value of K is adjusted periodically and dynamically according to current bandwidth using conditions of the implicit content server and file bandwidth occupancy thresholds configured for each file; and bitmap information of each file in the implicit content server is respectively issued to the common nodes in the network so as to enable the common nodes to request the data blocks from the implicit server according to the issued bitmap information.

An embodiment of the present invention provides a distributed machine learning training method, device, electronic equipment, and storage medium, wherein the method includes: determining the machine learning model to be trained, and the communication priority of the data sent to each computing node, said The communication priority of the data sent to each computing node is determined based on the model structure of the machine learning model and / or the processing speed of each computing node running the corresponding training task in the machine learning model; based on the data sent to The data communication priority of each computing node is to transmit the data flow generated by the machine learning model during the training process, so that each computing node can train the machine learning model based on the received data flow. The method, device, electronic equipment, and storage medium provided by the embodiments of the present invention improve the computing speed of machine learning model training and improve the utilization rate of computing resources in a distributed system.