22results about How to "Reduce switching delay" patented technology

The invention relates to an automatic switching method of a terminal and a satellite based on multi-attribute decision, and belongs to the technical field of satellite communication. The objective of the invention is to solve the problems of frequent switching and network performance reduction caused by high-speed movement of satellites in a 5G NTN low-orbit satellite communication scene. The method comprises the following steps: firstly, a terminal collects information of satellites in a visible range, including longitude and latitude, signal strength, serial numbers, channel resources and the like, and reports the information to a service satellite; and the service satellite calculates the remaining coverage time of the current satellite on the terminal according to the reported information, and judges whether to trigger switching. And if switching is triggered, the service satellite screens a candidate satellite set, quantitative evaluation is carried out according to attributes such as a satellite elevation angle, residual service time, the number of channels and switching time delay, and the satellite with the maximum comprehensive quantitative value is selected as a target satellite. And finally, the service satellite initiates a switching request to the target satellite and starts a switching process to complete switching between the terminal and the satellite.

The invention discloses a vehicle communication network switching method and device, equipment, a storage medium and a product. The method comprises the following steps: acquiring first network state data of a current communication network of a vehicle and second network state data of a standby communication network in a historical time period according to current vehicle driving time; inputting the first network state data into a network state prediction model obtained by pre-training to obtain predicted network state data output by the model in a future time period; according to the predicted network state data, whether network switching is carried out on the current communication network of the vehicle is judged; if yes, determining a target communication network based on a network state prediction model according to second network state data of the standby communication network; and switching the current communication network of the vehicle to the target communication network. According to the technical scheme of the embodiment of the invention, the switching delay of the vehicle-mounted communication network is reduced, and the situation of communication interruption is avoided.

The embodiment of the invention provides a memory leak detection method and device, equipment and a storage medium, and relates to the technical field of operating systems and performance tuning. The method comprises the following steps: monitoring memory allocation and release operation of a process by adopting a probe program; collecting memory use information of a stack of the process on memory allocation and release operation; through a collaborative caching mechanism of a kernel mode and a user mode, sharing memory use information to the user mode, and analyzing the memory use information in the user mode to obtain a comprehensive hotspot score representing a memory occupation growth trend of a stack; and determining whether the stack has memory leak according to the comprehensive hotspot score. Based on the method, whether the memory leaks or not can be accurately detected under the condition of low performance overhead.

The present invention provides a session creation method, device and AMF, the method comprising: before the session is created, obtaining slice information corresponding to the session; selecting a session management function SMF according to the slice information, and sending a first session creation request message to the selected SMF; in an embodiment of the present invention, the AMF obtains the slice information corresponding to the session before the session is created, so that the AMF can select the SMF and create the session according to the correct slice information, avoiding the process of inserting the SMF twice, shortening the switching delay, and improving the user service experience; at the same time, the AMF does not need to configure interoperability dedicated slices, reducing the local data workload.

The embodiment of the invention discloses a measurement result sending method, a measurement result receiving method and a related device, which are used for sending a measurement result of one or more reference signal resources and mode switching information so as to trigger a terminal device to be switched from a common mode to a separated mode. The network device does not need to configure the terminal device to switch to the separation mode through the RRC signaling, thereby reducing the switching time delay, and avoiding the influence on the transmission efficiency of the terminal device. The method provided by the embodiment of the invention comprises the following steps: measuring one or more reference signal resources; and sending the measurement result of the one or more reference signal resources and mode switching information, the mode switching information being used for indicating the terminal device to switch from a common mode to a separate mode, or the mode switching information being used for the terminal device to request to switch from the common mode to the separate mode.

The invention discloses a method and an apparatus in a communication node used for wireless communication. The communication node receives the first message; receiving a first signaling; applying the configuration information of the first cell as a response to the first signaling being received; as a response that the configuration information of the first cell is not successfully applied and completed, setting a first information block in a first UE variable, the first information block being used for indicating related information of wireless connection failure; the first domain in the first information block is set, and the first domain in the first information block indicates the identity of the first cell; a second domain in the first information block is set, the second domain in the first information block being set depending on whether the first cell is a serving cell of the first node. According to the scheme provided by the invention, self-configuration and self-optimization of the network are facilitated, the switching delay of the UE is reduced, and the switching success probability of the UE is improved.

The application discloses a plug-in micro set-top box multi-screen interactive content data adaptive processing method and system, relates to the technical field of broadcast television; the application is specially aimed at the scene of plug-in micro set-top box multi-screen interaction, and aims to solve the content processing bottleneck caused by local resource limitation and the problem of being unable to realize multi-screen interaction; based on a star structure formed by a central computing platform and a plug-in micro set-top box, the central computing platform is centrally managed, the plug-in micro set-top box only serves as light-weight data collection, streaming media receiving and processing, the plug-in micro set-top box uploads the collected device parameters to the platform, the platform adaptively processes content to generate streaming media, realizes multi-screen interaction through real-time processing, and considering predictive processing, distribution and resource scheduling, high adaptive efficiency, seamless switching, excellent picture quality and high scalability are realized.

The invention discloses an access method, device and equipment, a readable storage medium and a program product, relates to the technical field of communication, and aims to reduce switching time delay. The method comprises the following steps: receiving configuration information of a first node; according to the configuration information, setting the state between the terminal and the first node as a first RRC state, and setting the state between the terminal and a second node as a second RRC state; wherein in the first RRC state, air interface connection is not established between the terminal and the first node, and the second RRC state is an RRC connection state. According to the embodiment of the invention, the switching time delay can be reduced.

The utility model provides a packaging structure of an IGBT series module. The packaging structure comprises a housing; the semi-finished product units are stacked in the shell, each semi-finished product unit comprises a copper substrate, an IGBT chip and an FRD chip, the IGBT chip and the FRD chip are in bonding connection through a first bonding wire, the copper substrate is provided with a first welding surface, a second welding surface, a pin and an electrode, the first welding surface and the second welding surface are arranged oppositely, the pin and the electrode are connected, the IGBT chip and the FRD chip are located on the first welding surface, and the second welding surface is located on the second welding surface. The IGBT chip is in bonding connection with the pin through a second bonding wire; wherein the first bonding wires and the second bonding wires are arranged in a high-low mode, so that when the multiple copper substrates are stacked, the first bonding wires are partially connected to the second welding faces adjacent to the first bonding wires. According to the utility model, the technical problem that the turn-on delay and the parasitic inductance of the traditional packaging structure are difficult to further reduce is solved.

The application relates to the technical field of cross-domain multi-modal robots, in particular to a land-air robot with high ground self-adaptability and a control method thereof. The land-air robot comprises an air movement unit, a ground movement unit and an automatic driving module. The air movement unit is used for providing flight power for the land-air robot, so that the land-air robot has a flight mode. The ground movement unit is arranged at the bottom of the air movement unit, so that the land-air robot has a ground movement mode. The ground movement unit comprises a movement module and a five-link wheel-foot mechanism symmetrically arranged on the left and right sides of the land-air robot. The movement module is used for adjusting the posture of the five-link wheel-foot mechanism, so that the land-air robot realizes dynamic balance and posture righting in the ground movement mode. The automatic driving module is electrically connected with the air movement unit and the ground movement unit. The land-air robot in the application can move on land and in the air, and has good trajectory tracking performance in the land-air dual mode.

The invention provides a method for optimizing the frame rate of a two-dimensional map under a low-performance platform, and belongs to the technical field of geographic information systems, and the method comprises the steps: building LOD grades: carrying out the two-dimensional display of a map, and building the LOD grades of which the levels are greater than ten levels; setting an element display range: carrying out corresponding display level setting on each type of map elements; processing complex elements: setting different simplification strategies for different types of map elements with edge points exceeding a first preset threshold value, and utilizing a topology maintenance algorithm to ensure topology constraints; and data compression and reading: compressing and reading the original map data based on LOD grading establishment, element display range setting and complex element processing contents. Through the processing scheme provided by the invention, the frame rate stability when the low-performance platform operates the two-dimensional map is improved, the user interaction experience is improved, the equipment energy consumption is reduced, and the overall performance is improved.

This invention relates to the field of data communication technology and discloses a data communication method and system. The method includes: calculating the average RSRP of the primary 4G link over multiple consecutive periods; when the average RSRP is lower than the link switching threshold, switching the service route to the secondary 4G link in a hot standby state, and determining the secondary 4G link as a valid 4G link; triggering the airborne monitoring equipment and the remote monitoring platform to perform bidirectional authentication and generate a session key based on the valid 4G link; using the session key to perform SM4 source encryption on the monitoring data, adding a UTC timestamp, and performing channel encryption to obtain a double-encrypted message; transmitting the double-encrypted message to the secure access gateway of the remote monitoring platform; and having the secure access gateway of the remote monitoring platform perform channel decryption on the double-encrypted message to obtain a source-encrypted data packet, which is then forwarded to the remote monitoring platform. This method achieves seamless traceability of monitoring data throughout the entire flight process of a low-altitude aircraft.

The invention relates to a convolutional neural network acceleration technology, and provides a convolutional neural network accelerator designed on an ARM + FPGA heterogeneous platform. The ARM end generates a task descriptor containing Deadline, Cbudget and Bbudget, and predicts a budget; dynamic scheduling based on slack is adopted at the FPGA end, preemptive execution is implemented with tile as granularity, and context such as paraalsum and output buffer is stored / recovered at the boundary of the tile; and meanwhile, bandwidth shaping is carried out on DMA access by using a token bucket and a time slice, so that the bandwidth of each task does not exceed Bbudget. According to the scheme, DDR contention and delay jitter are reduced in a multi-task scene, and the real-time deadline satisfaction rate and the array utilization rate are improved.

The invention relates to a network switching method and device, computer equipment, a storage medium and a product, and relates to the technical field of communication. The method comprises the following steps: acquiring a network state of a current network environment; under the condition that the network state meets a first condition, determining that a network switching mode is to switch a current access network of the terminal equipment to an ad hoc convergence network; the ad hoc fusion network is a communication network obtained by fusing a cellular mobile network and a WLAN (Wireless Local Area Network); under the condition that the network state meets a second condition, determining that the network switching mode is to switch the current access network of the terminal equipment to a single available network; instructing the terminal equipment to perform network switching based on the determined network switching mode; by means of the method, intelligent network switching can be achieved, network switching delay and performance overhead during switching are reduced, and therefore delay and interruption of data transmission are reduced, and continuity and reliability of communication are guaranteed.

The invention relates to an optical switching device and an optical communication transmission system. The device comprises an optical switching unit, an optical switching sending unit, an optical switching receiving unit and a control unit, the optical switching transmitting unit comprises at least two groups of transmitting lines, and the optical switching receiving unit comprises at least two groups of receiving lines; the optical switching unit comprises a first switching subunit and a second switching subunit; the sending line is used for monitoring the power of each wave channel of signal light of a sending station; the control unit is used for determining a corresponding power change value when the power of the signal light of the sending station changes, and sending the power change value to the light switching receiving unit of the receiving station; the receiving line is used for determining and adjusting a switching threshold value of the second switching subunit according to the power change value; and the second switching subunit is used for carrying out line switching when the received signal optical power is smaller than the updated switching threshold. According to the invention, the problems of wrong line switching and long switching time delay in the existing multi-wave transmission system can be solved.

This disclosure relates to the field of communication and interaction technology, specifically to an audio transmission method, an audio transmission device, and an audio transmission system. The audio transmission method applied to the transmitting end includes: acquiring a stereo audio stream; mixing a first-channel audio stream and a second-channel audio stream to obtain a mixed audio stream for the first channel processing at the receiving end; determining square wave signal data corresponding to the mixed audio stream based on the transmission information of each audio frame in the mixed audio stream, for the second channel processing at the receiving end; combining the mixed audio stream and the square wave signal data, and transmitting the combined data via a first connection and a second connection pre-established with the receiving end, respectively, so that the receiving end can switch between the first audio stream received via the first connection and the second audio stream received via the second connection, thereby improving switching accuracy, reducing switching latency, and ensuring the smoothness and continuity of audio playback.

This utility model discloses a seamless 15V dual power input switching circuit, comprising a connector circuit, a switching circuit body, and a protection circuit. The connector circuit includes first and second connector circuits for connecting to an external 15V power input, which are respectively connected to the switching circuit body, enabling switching between the two power sources. The protection circuit connects the first connector circuit and the switching circuit body to prevent reverse connection of the power supply and protect downstream components. Compared with traditional solutions such as contactors, this seamless dual power input switching circuit significantly reduces switching delay, enables zero-interruption switching, and significantly improves power supply reliability, meeting the needs of devices sensitive to power switching time. Furthermore, it uses a combination of general-purpose components, eliminating the need for a dedicated switching chip and effectively reducing BOM costs.

The invention provides a timing advance estimation method and device, and the method is applied to terminal UE, and comprises the steps: determining that a current state is before switching; and obtaining a timing advance (TA) of the candidate cell. According to the timing advance estimation method and device provided by the invention, before the conditional LTM switching, the UE acquires the timing advance TA of the candidate cell, so that the situation that the UE cannot acquire the TA of the adjacent cell in the conditional LTM switching is avoided, and the switching time delay is reduced.

The invention discloses a method and an apparatus in a communication node used for wireless communication. A communication node receives a first message, the first message comprising configuration information of a first cell; sending a second signaling; receiving a first signaling, the first signaling being a signaling of a protocol layer under an RRC sub-layer, the first signaling indicating the first cell; applying the configuration information of the first cell as a response to the first signaling being received; as a response that the configuration information of the first cell is not successfully applied and completed, setting a first information block in a first UE variable, the first information block being used for indicating related information of wireless connection failure; a first domain in the first information block is set, and the first domain indicates the identity of the first cell; a second domain in the first information block is set, the second domain indicating a first time interval, the first time interval depending on at least one of the second signaling or the first signaling.

The invention discloses a mobile communication method. The method comprises the steps that first terminal equipment sends third information to second network equipment; the second network equipment receives third information; the first terminal equipment generates information of candidate relay equipment of the first terminal equipment at least based on the third information; the first terminal equipment sends the information of the candidate relay equipment to the first network equipment; the first network equipment receives the information of the candidate relay equipment; the first network equipment sends first information used for indicating to establish a side link between the candidate relay equipment and the first terminal equipment to the candidate relay equipment; and under the condition that the first terminal equipment needs to switch the relay equipment, the first network equipment and the first terminal equipment execute relay equipment switching based on the side link. The invention also discloses a first network device, a second network device, a first terminal device and a computer readable storage medium.

The invention discloses an FSK and LORA dual-band adaptive switching method based on environmental perception, and the method comprises the following steps: collecting multi-dimensional parameters of a communication environment and a link state in real time, and carrying out the standardization processing of the multi-dimensional parameters; determining a weight coefficient of the multi-dimensional parameter based on an analytic hierarchy process, constructing a switching decision index in combination with the standardized multi-dimensional parameter, and setting an FSK frequency band starting threshold interval, an LOAR frequency band starting threshold interval and a transition state threshold interval according to a value range of the switching decision index; according to a real-time calculation result of the switching decision index, judging a communication frequency band which should be started at present, and if the communication frequency band is in a transition state, starting a frequency band pre-switching mechanism; and after the switching is completed, collecting a communication quality parameter under a new frequency band, if the communication quality does not reach a preset standard, triggering a model parameter fine tuning process, and dynamically optimizing a weight parameter and a threshold interval. According to the invention, the technical problem of how to realize self-adaptive and high-reliability switching of FSK and LORA dual bands based on environmental perception is solved.

The invention relates to an operating system scheduling method supporting RISC-V vector register resource dynamic management, and belongs to the field of computer system structures, and the method comprises the following steps: building a vector instruction data acquisition basis; constructing a vector register use state and a data field of resource configuration; a judgment and branch processing logic based on task configuration parameters is introduced into a context switching execution path, and a context switch context switching process is completed based on a vector register use state and a data field of resource configuration; on the basis of collection of vector instruction data, in the task running process, the use condition of a vector register is periodically collected, a vector use heat value is calculated and updated, vector register resource hierarchical configuration is completed on the basis of a calculation result, and meanwhile the use state of the vector register and a data field of resource configuration are updated. The method has the effects that the context switching overhead is reduced on the premise of ensuring the execution correctness, and the vector hardware resource utilization efficiency and the overall system performance are improved.