33results 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 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 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 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.

A spoon is disclosed. The invention relates to the field of kitchen appliances, in particular to improvement of spoons. The spoon has a good anti-scalding effect, and is safe and clean. The spoon comprises a hemispherical spoon body made of stainless steel and a long strip-shaped spoon handle arranged on one side of the spoon body; a head end of the spoon handle is connected with the spoon body; atail end of the spoon handle has a silica gel layer; a cavity is formed between the silica gel layer and the spoon handle; partition plates are arranged inside the cavity; the partition plates dividethe cavity into a plurality of empty warehouses; and the empty warehouses are filled with liquid. The spoon has a good anti-scalding effect and is safe and clean.

The invention provides an automobile product analysis method and device based on an NLP algorithm and a medium, and the method comprises the steps: determining that a plurality of signal collection ends are connected with a gateway, collecting network public opinion data by the signal collection ends, carrying out the preprocessing based on the NLP algorithm, and recognizing a plurality of comment authors of the network public opinion data collected by each signal collection end; transmitting the data to a plurality of gateway nodes; the gateway node normalizes the data acquired by the signal acquisition end and transmits the data to the mobile display terminal or the switch; the switch transmits data to the plurality of edge nodes, the plurality of edge nodes distribute signal data acquired by the plurality of signal acquisition ends and transmitted by the switch and transmit the data to the cloud, and the remote terminal downloads the data from the cloud. According to the method, the NLP algorithm and OBD data fusion are adopted, comment authors in the network public opinion data text can be accurately analyzed, enterprises can make coping strategies for network public opinions in time, and products and services of the enterprises are continuously innovated and perfected.