31 results about "Periodic broadcast" patented technology

The invention relates to a communication method, a communication device, Bluetooth equipment, a communication system, a medium and a product. The communication method is executed by a first Bluetooth device, and comprises the following steps: in response to an operation of initiating team formation, generating a target team formation identifier which is used for forming a first communication team; in response to receiving a first extension broadcast sent by a second Bluetooth device, teaming with the second Bluetooth device, the first extension broadcast comprising the target teaming identifier and the device identifier of the second Bluetooth device; and in response to completion of team formation of the first communication team, sending a first periodic broadcast in the first communication team, the first periodic broadcast comprising communication data to be sent by the first Bluetooth device. Therefore, team formation of a plurality of Bluetooth devices is realized through the low-power-consumption Bluetooth extended broadcast, and the purposes of rapid team formation and flexible entry and exit of team formation can be achieved. In addition, periodic broadcasting is adopted for communication, the communication distance is expanded, and the communication experience is improved.

The application provides a base station data continuation method, system and storage medium for offshore communication interruption, the method comprises the following steps: acquiring ship data, performing feature analysis and classification processing on the acquired ship data, and determining the data priority; adding timestamp information to the processed data, and storing the data according to the priority; connecting the base station to determine the continuation user, recording the user connection duration, and determining the continuation data; calculating the maximum sending rate of the continuation data, and allocating the continuation rate to each user; and performing data continuation according to the continuation rate. The technical scheme of the application can realize the optimization processing of the historical data continuation of the periodic broadcast information, solves the conflict problem caused by the network bandwidth of the historical data and real-time data, and improves the timeliness of the historical data continuation without affecting the real-time data by using the method.

The invention discloses a method and system for establishing and maintaining a backbone subnet in a mobile ad hoc network, and the method comprises the steps: dividing nodes in a network into different node types according to a current state, and enabling the node types to comprise an assigned node, an isolated node, a common node and a backbone node; the backbone node periodically broadcasts the beacon, and the surrounding nodes of the backbone node perform node conversion according to the received backbone node beacon; if the isolated node receives the beacon of the backbone node, the isolated node becomes a common node; if the backbone node beacon is not received within the preset time, the isolated node is changed into a backbone node after timeout; if the common nodes receive the backbone node beacons, the common nodes become backbone nodes based on self-election according to the backbone node beacons; and the backbone node judges whether redundancy exists or not according to the received beacons of other backbone nodes, and if yes, the backbone node is changed into a common node based on self-cutting. According to the invention, the network overhead is reduced, and efficient networking and transmission are realized.

The invention discloses an ONU (Optical Network Unit) gateway Mesh sub-machine software version synchronization method based on spreading type upgrading, which comprises the following steps of: performing initial triggering: when a host detects that a new version is available, sending an updating instruction to at least one core sub-machine, and receiving the updating instruction by the sub-machine for updating; performing spread synchronization, namely performing spread synchronization on the new version identification information to the adjacent sub-machine by the upgraded sub-machine through periodic broadcast; checking in a grading manner; and completing confirmation and state summarization. According to the embodiment of the invention, a hierarchical verification and retransmission mechanism is adopted, so that the integrity of version synchronization is ensured, the reliability is improved, and the method and the device can be applied to fiber to room (FTTR), enterprise-level fiber to room (FTTR)-B and broadband fusion terminal products.

Rotating a MAC address of a target STA to avoid being tracked by a nefarious actor. An AR sends a signal with multiple schedules to the target STA, each with a different timing to rotate the MAC address. The target STA can choose to use one of the schedules, use none of the schedules, or ask the AR to provide a modified schedule for the target STA to use. The AR can send another signal to the target STA with multiple schedules including the modified schedule.

This application provides an IoT data transmission method and system for exoskeleton status monitoring, relating to the field of exoskeleton IoT transmission technology. This application acquires wearer monitoring data and identifies gait intentions through an exoskeleton detection device, simultaneously predicting the relative motion trends and signal obstruction relationships between communication nodes. Then, the control nodes periodically broadcast beacons encapsulating motion vectors and link detection results. Nodes exchange beacons to construct a local network topology graph that fuses edge weights with detection results and link stability parameters. A hierarchical clustering structure is formed through distributed consensus optimization, and a highly stable cluster head is selected. Based on this structure, a multi-hop transmission path is established with the cluster head as a relay, maintaining a path concentration value characterizing transmission quality. When forwarding collaborative control commands, the next hop is probabilistically selected based on this value to complete command distribution, enabling adaptive, highly stable multi-hop transmission of collaborative control commands in exoskeleton IoT.

A method of controlling a base station in a telecommunications network to disable or continue periodic broadcast of a system information block one (SIB1). The method comprises broadcasting an indicati

The invention discloses a massive alarm log noise reduction and correlation analysis method based on a dynamic aggregation log codebook. According to the method, association analysis based on the Apriori algorithm is achieved for the alarm logs, an association log sequence is generated, a specific data structure-log codebook (Log Code-book) is generated through regularization processing, and codebook of the automatic association relation is achieved. In addition, noise reduction processing and multi-device association analysis of the massive alarm logs of the devices are achieved through the log codebook, and the alarm log association processing effect is remarkably improved. According to the invention, through a double-period codebook aggregation framework based on period broadcasting and timing uploading, a relatively high log association analysis effect is maintained in a dynamic network topology environment, and relatively high robustness is represented in various network environments.

The invention relates to a mesh network operation method with a power saving mechanism. A mesh network operation method with a power saving mechanism is applied to a mesh network system, and comprises the following steps: acquiring a packet temporary storage state of a node device from an access point device by a root node device; each node device is provided with a node packet temporary storage state table for indicating a packet temporary storage state, and broadcasts a beacon signal containing the node packet temporary storage state table at an independent periodic broadcast time; enabling the node device to correspondingly receive the beacon signals broadcasted by the father node device and the child node device; enabling the node device to analyze the node packet temporary storage state table of the beacon signal so as to update the node packet temporary storage state table of the node device; and when the node device enters the dormancy state and the packet temporary storage state has the temporary storage indication level, waking up according to the preset schedule to carry out the packet transfer program.

The application discloses an air-ground communication method and device, a terminal and an ATG base station, and relates to the technical field of communication, to solve the problem that the existing air-ground communication system has long-time same-frequency interference on air mobile services. The method comprises the following steps: a terminal determines a first candidate ATG base station group according to position information of the terminal and preset air-to-ground ATG base station list information; the terminal sends a wake-up message to the first candidate ATG base station group to wake up the first candidate ATG base station group and trigger the first candidate ATG base station group to send system messages; and the terminal establishes a communication connection with a target candidate ATG base station in the first candidate ATG base station group when the target candidate ATG base station sends a system message. In this way, the ATG base stations along the air route are changed from a periodic broadcast mode to a long-time silent mode by the terminal waking up and triggering the ATG base stations to broadcast system messages, so that the long-time same-frequency interference of the periodic wide beam of the ground ATG base station on the air mobile services is effectively avoided.

The invention discloses a UWB-based low-power-consumption ranging and positioning system. The system comprises a plurality of beacons, a plurality of tags and a gateway, two wireless communication modes of UWB and Bluetooth BLE are built in the beacon, in a discovery state, the beacon closes all peripherals to enter a dormant state, Bluetooth BLE periodic broadcast is started, a data packet is sent periodically through the UWB, and a receiving waiting response is started; in a working state, a Poll packet is regularly and actively sent in a dormancy mode, receiving is started, whether correct response packet data is received or not is judged within set time, if yes, a Final packet is sent in a delayed mode to complete a distance measurement process, and if not, whether a discovery state is re-entered or not is judged according to receiving idle count; a three-axis sensor is arranged in the tag, and in a working state, distance measurement is completed through interaction of UWB signals and nearby beacons, and the distance is uploaded to a server. According to the invention, the beacon can be powered by the battery and can operate for a long time, stay wires deployed on site are omitted, and the installation complexity of the UWB positioning system is reduced.

The invention discloses a networking method and system for a cremation equipment working condition parameter wireless monitoring system based on a hierarchical protocol stack, and belongs to the technical field of industrial Internet of Things wireless communication. The invention provides a hierarchical protocol stack networking scheme for solving the problems that an existing cremation equipment wired monitoring system is complex in wiring and poor in expansibility, and the multi-node conflict rate is high and the transmission reliability is insufficient in wireless communication. According to the scheme, a unified time reference is established by periodically broadcasting synchronous signaling through a coordinator node, and an exclusive communication time slot is distributed for a terminal node by adopting a CS-TDMA (Center Coordinated Time Division Multiple Access) mechanism, so that the multi-node communication conflict is fundamentally avoided; meanwhile, in combination with a TS-DART (time-sharing dual-acknowledgement reliable transmission) mechanism, end-to-end reliable transmission is ensured through four handshake flows of'command-ACK-data-ACK '. The system adopts a star network topology, the coordinator is realized based on a CC2530 chip, and the terminal nodes are integrated with various sensor acquisition modules, so that the system has the characteristics of low power consumption, high reliability, strong interference resistance and the like, the real-time performance and the stability of cremation equipment working condition monitoring are remarkably improved, and the system is suitable for high-temperature and strong-interference industrial environments.

The invention discloses an IP-based meter reading method and system based on a dual-mode communication network, relates to the technical field of field area networks, and solves the technical problem that interconnection and intercommunication between devices are difficult to quickly perform in the field area network technology. The method comprises the following steps that: a routing node and a terminal node carry out networking of a local network, and the routing node synchronously drives an Ethernet module or a mobile communication module to access the Internet in an IPv6 (Internet Protocol Version 6) mode; the routing node dynamically acquires an IPv6 global unicast address, sets two network routes, and starts to periodically broadcast and send a route notification message after accessing the Internet; the terminal node actively initiates a routing request message or receives a routing notification message periodically broadcasted by the routing node; after receiving the route notification message, the terminal node generates a global unicast address; and the terminal node is in data communication with the remote server to analyze and store the data of the electric meter. The method is suitable for the field area network with multiple communication modes fused, and equipment interconnection and intercommunication can be carried out conveniently and rapidly.

The invention provides an internet-of-things data transmission method and system for exoskeleton state monitoring, and relates to the technical field of exoskeleton internet-of-things transmission, and the method comprises the steps: obtaining the monitoring data of a wearer through an exoskeleton detection device, recognizing a gait intention, and synchronously predicting a relation between a relative motion trend and a signal shielding between communication nodes; controlling the nodes to broadcast and package beacons of motion vectors and link detection results periodically, and exchanging the beacons by the nodes to construct a local network topological graph of edge weight fusion detection results and link stability parameters; a hierarchical clustering structure is formed through distributed consensus optimization, and a high-stability cluster head is selected; establishing a multi-hop transmission path taking a cluster head as a relay based on the structure, and maintaining a path concentration value representing transmission quality; and when the cooperative control instruction is forwarded, the next hop is selected in a probabilistic manner according to the value to complete instruction distribution, so that self-adaptive and high-stability multi-hop transmission of the cooperative control instruction in the exoskeleton Internet of Things can be realized.

This application discloses a master device, a stylus, a control method, and a stylus search system. The control method includes: upon receiving a stylus search command, the master device initiates reception of a periodic broadcast signal and receives the periodic broadcast signal containing a constant pitch extension from the stylus. Based on the periodic broadcast signal containing the constant pitch extension, the master device calculates the real-time distance between the master device and the stylus using channel sensing technology, and generates a control command corresponding to the distance based on the real-time distance to control at least one of the master device and the stylus to output a prompt signal representing the magnitude of the real-time distance.

The invention relates to a broadcast audio communication method and device, electronic equipment and a storage medium. The broadcast audio communication method includes: a broadcast audio receiver determines a broadcast audio transmitter based on a detected extended broadcast EA; a response periodic broadcast PAwR sent by the broadcast audio transmitter is received, the PAwR is synchronized, the PAwR comprises periodic broadcast data used for identifying one or more sub-events, and the sub-events are used for bearing sub-event information; analyzing the periodic broadcast data to obtain one or more sub-events, and determining a target idle sub-event in the one or more sub-events; and synchronizing sub-event information corresponding to the target idle sub-event with the broadcast audio transmitter, and listening to a broadcast audio stream sent by the broadcast audio transmitter. According to the invention, based on the PAwR, the broadcast audio receiver receives the broadcast audio stream sent by the broadcast audio transmitter, and bidirectional communication between the broadcast audio receiver and the broadcast audio transmitter is realized.

A wireless network operation method having power saving mechanism is provided. Packet storage states of node apparatuses are retrieved by a root node apparatus from an access point apparatus. For each of the node apparatuses, a node packet storage state table indicating the packet storage states is configured and a beacon signal including the node packet storage state table is broadcasted in an independent periodic broadcast time. For each of the node apparatuses, the beacon signals are received and the node packet storage state table included by the beacon signal is analyzed to update the node packet storage state table. For each of the node apparatuses entering a sleep mode, a predetermined schedule is performed to wake up to perform a packet transmitting process when the packet storage state of any one of the node apparatuses and the child node apparatus thereof has a storage indication level.

The invention discloses a one-to-one transmission method, device, system and equipment for audio signals, and a medium, which are used for quickly and accurately realizing synchronization of audio signals received by a receiving end and audio signals sent by a sending end through a broadcast isochronous group. The method comprises the following steps: establishing a one-to-one connection link between first electronic equipment and second electronic equipment; an extended broadcast is created, a periodic broadcast is created based on the extended broadcast, the periodic broadcast comprises information of a broadcast isochronous group to be sent by the first electronic device, the information is used for instructing the second electronic device to receive the broadcast isochronous group sent by the first electronic device, and the broadcast isochronous group is used for transmitting audio signals; when the periodic broadcast is successfully operated, making the extended broadcast invalid; sending the synchronization information of the periodic broadcast to a second electronic device through a one-to-one connection link, so that the second electronic device receives the periodic broadcast sent by the first electronic device; based on the information of the broadcast isochronous group, the broadcast isochronous group carrying the audio signal is transmitted.

The application provides a wireless audio communication method, device and system, comprising: broadcasting audio data based on a broadcast communication link; periodically broadcasting based on an advertising channel; the advertising channel comprises a periodic advertising channel; when periodically broadcasting, negotiating with a second device on the periodic advertising channel to establish an ACL link according to a pre-configured protocol; the pre-configured protocol is used to support bidirectional communication between the first device and the second device based on the periodic advertising channel, and the ACL link is used for point-to-point data transmission with the second device. Thus, during the broadcasting of the audio data, the first device can negotiate with the second device on the periodic advertising channel to establish the ACL link through the periodic broadcasting, and the first device does not need to additionally open a search window to establish the ACL link, so that the ACL link between the first device and the second device can be quickly established, the bandwidth is saved, the development difficulty is reduced, and the user experience is improved.

The invention provides an equipment communication method, system and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: dividing a periodic broadcast event into at least two sub-events, and determining response information corresponding to the sub-events; the response information comprises a response equipment identifier and response time; sending corresponding response information to a second audio device at the sub-event, so that the second audio device determines a target sub-event according to a response device identifier corresponding to the sub-event; and switching a receiving mode according to the response time corresponding to the target sub-event, and receiving response data of the second audio equipment. According to the invention, two-way communication of low-power-consumption and high-performance audio equipment can be realized.

The invention belongs to the technical field of wireless communication, and particularly relates to a long-distance passive channel shaping method based on a passive intelligent reflecting surface, which comprises the following steps that: a transmitting end periodically broadcasts synchronous reference, drives an RIS control panel to move, average and correct a symbol counter, and aligns an OFDM symbol boundary; the method comprises the following steps: pre-loading a reflection pattern, and regularly submitting a specified target symbol and a security window; a delay sample is collected by a pilot frequency covering switching, and a stable completion upper bound is obtained according to a quantile and an error margin; in this way, a window is selected in the CP, the reserved symbol or the blank micro-segment, and the reflection units are synchronously updated in the window through global latching / pointer swapping. According to the method, switching disturbance is limited in a safety window, invisible ICI is inhibited, error codes are reduced, and throughput stability is improved.

The invention relates to a method for defending against a replay type pseudo base station and a counterfeit type pseudo base station, belongs to the field of communication security, and solves the problem that the security of a 5G network is reduced due to a pseudo base station attack. Comprising the following steps: respectively presetting symmetric keys Key for encryption and decryption at a 5G base station and a special terminal; the method comprises the following steps: generating 5G cell broadcast information SIB1 at a 5G base station side, performing assignment encryption on a reserved field in the SIB1 to obtain an expanded SIB1 ', and performing periodic broadcast on the SIB1'; wherein the reserved field assignment is performed based on the SIB1, the cyclically changed serial number and the sending timestamp to generate an SIB1'with a unique serial number identifier and a timestamp; the reserved field in the received SIB1'is decrypted and verified on the special terminal side; decrypting and checking the defense counterfeit type pseudo base station based on the reserved field; and verifying the defense replay type pseudo base station based on the sequence number in the reserved field and the time difference between the receiving time stamp and the sending time stamp. And the communication security is improved.

The invention discloses a low-altitude narrowband Internet of Things communication system, and belongs to the field of Internet of Things communication. The system constructs a broadcast type wireless data distribution network based on LoRa, TurMass and other narrowband Internet of Things links, and a ground management and control system uniformly plans waveform identifiers and parameter sets for low-altitude airspace grids and / or air route segments and broadcasts and publishes the waveform identifiers and the parameter sets; the unmanned aerial vehicle platform terminal obtains and switches waveforms according to the airspace where the unmanned aerial vehicle platform terminal is located, broadcast frames containing identities, states and air traffic control service information are periodically broadcasted, and other nodes monitor and obtain the airspace situation in real time. A sending end judges channel occupation through waveform monitoring so as to reduce collision, retransmission is carried out by adopting a random time slot delay mechanism when it is detected that a channel is busy or a collision event is detected, and waveform and retransmission parameters are supported to be updated and published based on an airspace statistical result. According to the invention, the manageability, the expandability and the cross-regional cooperation capability of low-altitude airspace communication are enhanced, and a more stable situation sharing and air traffic control service guarantee is provided for a high-density low-altitude operation scene.

The invention discloses a tire pressure data transmission method and system and a vehicle, and relates to the technical field of data transmission. The method comprises the following steps: sending broadcast data to a tire pressure data receiving end of a vehicle, triggering the enabling of the tire pressure data receiving end and configuring periodic broadcast PAwR with response according to preset parameters, establishing connection with the tire pressure data receiving end in response to a connection request sent by the tire pressure data receiving end, and receiving response slot configuration information; according to the preset parameters sent by the tire pressure data receiving end, synchronizing with the tire pressure data receiving end, and finally responding to the periodic broadcast packet sent by the tire pressure data receiving end, and replying the periodic broadcast response packet with the tire pressure related data in the response slot specified by the response slot configuration information. Therefore, the problems of high power consumption, low receiving rate and high delay caused by the fact that the tire pressure sensor transmits the tire pressure data in a Bluetooth low-power-consumption broadcast mode are solved.

The present application relates to the technical field of Internet of Things, and provides a kind of air conditioner bluetooth connection method, equipment and medium, by air conditioner periodic broadcast connectable non-directional broadcast package, second connectable non-directional broadcast package sent by mobile device is analyzed and verified, and verification code is randomly generated, after receiving and verifying third connectable non-directional broadcast package sent by mobile device, fourth connectable non-directional broadcast package with the specific connectable mark of air conditioner is sent, when receiving the connection request package of mobile device, bluetooth connection is established with mobile device, and then it can be connected in the adaptive connection authentication of non-connecting stage using connectable non-directional broadcast in broadcast stage, avoid the resource occupation caused by illegal connection operation of other equipment, improve bluetooth connection pairing efficiency and stability.

The application belongs to the technical field of wireless communication, and particularly relates to a long-distance passive channel shaping method based on a passive intelligent reflecting surface. A transmitting end periodically broadcasts a synchronization reference, drives a RIS control board sliding average correction symbol counter, and aligns an OFDM symbol boundary. A reflection pattern is preloaded, and a specified target symbol and a safety window are submitted in time. Delayed samples are collected according to pilot coverage switching, and a stable upper limit is obtained according to quantile values and error margins. According to this, a window is selected in a CP, a reserved symbol or a blank section, and a reflecting unit is synchronously updated through global latching / pointer exchange in the window. The method limits switching disturbance in the safety window, suppresses invisible ICI, reduces error codes, and improves throughput stability.

The invention provides a main / standby control method and device, and the method comprises the steps: determining whether a current master control resource module fails or not according to a system period state table of a calculation channel in the current master control resource module and a self-inspection result; according to the cycle broadcast message received by the calculation channel in the current master control resource module and the system cycle state table, whether other master control resource modules fail or not is determined; and if any master control resource module has a fault, finishing master-slave switching control according to the master-slave type of the master control resource module. The method does not depend on any external special equipment, each master control resource module in the cloud platform becomes an equal participant in a decision network, and a decentralized and highly-credible collective decision system is formed through a system period state table and a period broadcast message. The purpose of effectively performing main and standby control in the cloud security computing platform is achieved.

The application relates to the field of wireless communication, in particular to a high-density Internet of Things channel access method based on deep reinforcement learning, which comprises the following steps: initializing a communication network when a new node joins the communication network; after each initialization, carrying out data transmission according to a superframe period, wherein the superframe period comprises a data transmission period and a control period, in the control period, a node listens to an access contention window and a maximum backoff index broadcast by a sink node, and then the maximum backoff times are determined, in the data transmission period, the node carries out channel access according to channel access parameters broadcast in the control period in the last superframe period; after the data transmission period ends, the sink node selects an access parameter corresponding to the maximum action value according to a Q-learning algorithm as an access parameter of the next superframe period; the application avoids the generation of a large number of collisions in a high-density network environment, improves network throughput, and reduces a packet loss rate.

The invention belongs to the technical field of wireless communication, and particularly relates to an adaptive broadcasting method for an ad hoc network in a high-dynamic environment. According to the scheme, the network system comprises a high-dynamic mobile ad hoc network composed of k mobile nodes, the nodes operate under a synchronous time slot structure, and each node achieves neighbor discovery and link maintenance by periodically broadcasting HELLO messages. According to the method, optimization of neighbor discovery efficiency and energy consumption balance is taken as a target, and a dual-stage adaptive mechanism is adopted: rapid topological convergence is realized through fast / slow start dual-mode probability broadcast in an initial discovery stage, and an HELLO interval is dynamically adjusted based on link duration prediction and node density in a link maintenance stage. Compared with the prior art, the scheme of the invention can significantly improve the neighbor discovery efficiency in a high dynamic environment and reduce the system energy consumption without the support of a GPS (Global Positioning System).

Rotating a MAC address of a target STA to avoid being tracked by a nefarious actor. An AP sends a signal with multiple schedules to the target STA, each with a different timing to rotate the MAC address. The target STA can choose to use one of the schedules, use none of the schedules, or ask the AP to provide a modified schedule for the target STA to use. The AP can send another signal to the target STA with multiple schedules including the modified schedule.