22 results about "Group communication systems" patented technology

The invention provides a method for generating a parameter lookup table used for linear quantization of an input LLR signal of a decoder, and the method comprises the following steps: determining a communication system parameter used for the lookup table, and obtaining a conditional probability quality function of the LLR signal outputted by a demodulator based on the communication system parameter; based on the conditional probability mass function, determining a quantization factor for a linear quantizer by using a mutual information maximization algorithm; and storing at least each group of communication system parameters and the corresponding quantization factors in a lookup table to generate the lookup table. According to the method and the device, the parameter lookup table can be constructed, and the corresponding optimal linear quantization parameter is calculated for each group of communication system parameters, so that rapid parameter calling in an online operation stage of the system is supported, and efficient quantization processing of the LLR signal is realized.

A group communication method, a group communication apparatus, a base station, a terminal, a group communication system and a computer-readable storage medium. The method is executed by a radio-frequency daughter board of a base station, and comprises: sending a synchronization frame to a terminal group within a communication cycle, wherein the synchronization frame includes indication information that indicates whether the communication cycle is a wake-up packet sending cycle, the terminal group comprises a plurality of terminals, and the plurality of terminals are grouped in a multi-level organization manner (S110); and within the wake-up packet sending cycle, sending to the terminal group a multi-level description field for waking up terminals and a data payload field (S120).

The invention relates to the technical field of wireless communication, in particular to an antenna radiation and mutual coupling collaborative optimization system based on a time domain hybrid fast algorithm. The antenna radiation and mutual coupling collaborative optimization system based on the time domain hybrid fast algorithm is applied to an unmanned aerial vehicle group communication system and comprises an antenna array unit, a data acquisition unit, a time domain hybrid fast algorithm unit, a mutual coupling calculation unit, an optimization control unit and a communication coordination unit. According to the invention, the three-dimensional geographic coordinates, attitude angle data and signal intensity of the unmanned aerial vehicle group are acquired in real time through the data acquisition unit, and real-time mutual coupling coefficient analysis of the mutual coupling calculation unit is combined, so that the system can dynamically sense the formation form change and trigger the optimization instruction, and the optimization control unit performs comparison through a preset threshold value. The node with the maximum deviation degree is adjusted preferentially, it is ensured that the antenna spacing and the radiation pattern are always adaptive to the dynamic environment, the mutual coupling effect is reduced, and the communication stability is remarkably improved.

To provide a network device and a communication control method for applying a minimization of drive tests (MDT) function to a user device to which a coverage extension function is applied.SOLUTION: A communication control method includes a user device transmitting, to a network, a success information stored when the user device succeeds in receiving a predetermined service from a predetermined cell. The success information includes an identifier of the predetermined cell, an identifier of the user device provided from the predetermined cell, and information indicating the number of times of trials for receiving the predetermined service.SELECTED DRAWING: Figure 12

Provided is a video conference support method which includes: presenting a plurality of virtual space background objects, each of which is associated with seat arrangement and metadata representing seat information including a seat size, a seat level, and seat location coordinates for each seat, to a host terminal device through a network, and receiving information on a selected virtual space background object from the host terminal device; obtaining participant images each from the multiple terminal devices; constructing a composite image by arranging all the participant images on the selected virtual space background object according to the metadata and in a predetermined participant arrangement order; and encoding the selected virtual space background object constituting the composite image, and the participant images and audio, transmitting encoded data to the plurality of terminal devices, and causing the terminal devices to overlay and output the participant images on the selected virtual space background object.

The utility model discloses a Bluetooth earphone with a talkback function and a group communication system. The Bluetooth earphone with the talkback function comprises a charging bin body, an earphone body and a wearable remote controller. The charging bin body comprises a Bluetooth module in signal connection with the earphone body and the wearable remote controller, a 4G / talkback module in signal connection with the Bluetooth module, and a charging module for charging the earphone body; the earphone body comprises a microphone used for receiving sound and a loudspeaker used for playing the sound; wherein the wearable remote controller is in signal connection with the Bluetooth module through the low-power-consumption Bluetooth chip, the wearable remote controller sends a remote control signal to the Bluetooth module through the low-power-consumption Bluetooth chip, and the Bluetooth module sends a control signal to the earphone body based on the remote control signal to start the microphone. According to the Bluetooth earphone with the talkback function, on the basis of the talkback function, the remote controller convenient for controlling the Bluetooth earphone is arranged.

The present invention provides an optimized method for the operation of a heavy-haul train group with communication and line vertical and horizontal profile constraints, which relates to the field of the operation of heavy-haul train groups and includes: establishing a longitudinal dynamics model of a heavy-haul train group considering vehicle-to-vehicle communication; decomposing the three-dimensional spatial alignment of the railway line corresponding to the heavy-haul train group into curves along the horizontal plane and ramps along the vertical direction to generate a railway line decomposition result; establishing an optimized operation model of a heavy-haul train group considering vehicle-to-vehicle communication according to the longitudinal dynamics model of a heavy-haul train group considering vehicle-to-vehicle communication and the railway line decomposition result; numerically solving the optimized operation model of a heavy-haul train group considering vehicle-to-vehicle communication to generate an operation curve; and solving the vehicle-to-vehicle communication system parameters that meet the communication transmission requirements according to the operation curve. This method provides direct guidance for the selection of communication systems for large-scale heavy-haul train groups in complex environments and has significant advantages in improving the operation smoothness of heavy-haul train groups.

Embodiments of the present invention provide a cross-domain intercom group communication system, method, apparatus, device, and medium. The present invention uses a first quantum security software development toolkit to send a key application request for group communication to a first quantum key system, receives first authentication code information and a key identifier sent by the first quantum key system, and sends group information, first authentication code information, and key identifier of the group to a second quantum security software development toolkit. The second quantum security software development toolkit sends the identity token, group information, first authentication code information, and key identifier of the second quantum security software development toolkit to the second quantum key system. The second quantum key system determines the verified authentication code information, and the second intercom terminal establishes communication with the first intercom terminal through the verified authentication code information, thereby enabling the first intercom terminal and the second intercom terminal to communicate even if they are terminals of an intercom group in a cross-domain quantum resource pool.

Provided in the embodiments of the present application are a cross-domain intercom group communication system, method and apparatus, and a device and a medium. In the present application, a first quantum security software development kit sends to a first quantum key system a key application request for the communication of a group, receives first authentication code information and a key identifier that are sent by means of the first quantum key system, and sends group information of the group, the first authentication code information and the key identifier to a second quantum security software development kit; the second quantum security software development kit sends an identity token of the second quantum security software development kit, the group information, the first authentication code information and the key identifier to a second quantum key system; the second quantum key system determines verified authentication code information; and a second intercom terminal establishes communication with a first intercom terminal by means of the verified authentication code information, such that the first intercom terminal and the second intercom terminal can communication with each other even if they are terminals in an intercom group of a cross-domain quantum resource pool.

The invention provides a radio frequency front-end module, a communication system and communication equipment, and relates to the technical field of radio frequency front-ends, and the radio frequency front-end module comprises an amplification circuit and a matching circuit. The amplification circuit inputs a power supply voltage, inputs a first signal, and obtains a second signal based on the first signal. The matching circuit amplifies the second signal to form a target signal, the target signal is an output signal of the radio frequency front-end module, the matching circuit comprises a balun structure and an impedance matching adjusting unit, the balun structure comprises a primary winding and a secondary winding, the primary winding is electrically connected with the amplifying circuit, and the primary winding is also grounded; the secondary winding is electrically connected with the impedance matching adjusting unit, and the secondary winding is also electrically connected with the output end through the impedance matching adjusting unit. The radio frequency front-end module can adapt to different power supply voltages based on the capacitance value of the impedance matching adjusting unit, and the power supply voltage is inversely proportional to the capacitance value of the impedance matching adjusting unit, so that the power supply voltage of the radio frequency front-end module can be regulated and controlled.

The invention provides an animal ear tag group communication system, the system comprises a plurality of animal ear tags and a receiving node, each animal ear tag comprises a first energy storage unit, a second energy storage unit, an energy collection module and a control unit, and the control unit is used for carrying out cooperative power supply control on the first energy storage unit and the second energy storage unit. A communication strategy is executed according to the scheduling instruction of the receiving node or the local sensing state; wherein the receiving node dynamically divides the plurality of animal ear tags into different communication groups according to the received state information of the plurality of animal ear tags by broadcasting synchronization information or issuing a scheduling instruction so as to realize group-level communication scheduling. According to the technical scheme, the novel animal ear tag system has a high-energy-efficiency power supply framework, environment and behavior perception capability and a self-adaptive group communication scheduling mechanism, so that high-efficiency, reliable and intelligent communication management of large-scale animal groups is realized while long-term endurance is guaranteed.

The invention relates to a group communication system (1) comprising: at least one WLAN wireless network, a plurality of terminal devices (E1-E3), and a plurality of access points (AP1-AP3), wherein each of the access points (AP1-AP3) forms a node of the group communication system (1), wherein several or all of the access points (AP1-AP3) form a WLAN mesh wireless network (2), wherein each of the terminal devices (E1-E3) is connected to the access point (AP1-AP3) with which the best quality WLAN wireless connection exists, wherein each of the terminal devices (E1-E3) is a participant in a group communication that encompasses the entire WLAN mesh wireless network (2), and wherein participation in the group communication occurs regardless of which access point (AP1-AP3) the respective terminal device (E1-E3) is connected to.

The invention relates to the field of earphone self-assembly communication, and discloses an infinite cascading method and device of a full-duplex communication earphone and a storage medium. The method comprises the following steps: the first host system establishes communication connection with a specified second slave system in N2 second slave systems; the first host system receives a communication instruction and judges whether the communication instruction points to N1 first slave systems; when the communication instruction points to N1 first slave systems, the communication instruction is sent to the corresponding first slave systems; when the communication instruction does not point to N1 first slave systems, the communication instruction is sent to the specified second slave system; and the specified second slave system receives the communication instruction and transmits the communication instruction to the second host system. According to the embodiment of the invention, the Ad hoc communication system is utilized to maintain the earphone communication tone quality, increase the earphone connection number and expand the call coverage range.

To provide a network device and a communication control method for applying a minimization of drive tests (MDT) function to a user device to which a coverage extension function is applied.SOLUTION: A communication control method includes a user device transmitting, to a network, a success information stored when the user device succeeds in receiving a predetermined service from a predetermined cell. The success information includes an identifier of the predetermined cell, an identifier of the user device provided from the predetermined cell, and information indicating the number of times of trials for receiving the predetermined service.SELECTED DRAWING: Figure 12

The embodiment of the invention discloses a communication interference control method, a communication system and equipment, applied to the communication system, the communication system comprises a plurality of interconnected communication modules, and the communication system determines a master control module from the plurality of interconnected communication modules; the non-master control module sends working information to the master control module, wherein the working information comprises the communication technology and the working frequency currently used by the non-master control module; the master control module determines a protected module and an interference module from non-master control modules according to the working information; the interference module and the protected module have a frequency conflict; the main control module sends a frequency switching instruction to the interference module, wherein the frequency switching instruction is used for switching the working frequency currently used by the interference module into a target working frequency; the target working frequency does not conflict with the working frequency currently used by the protected module. According to the embodiment of the invention, a unified interference negotiation technology can be adopted among multiple devices, and communication interference among the multiple devices is avoided.

The application is suitable for the technical field of motor train unit communication management, and provides a motor train unit communication management method and system based on AI analysis.The method comprises the following steps: when it is predicted that a target motor train unit communication system has a link stability risk caused by pantograph instantaneous interruption in a future period, the current route priority improvement range of a backup link is obtained, a predicted voltage disturbance index corresponding to the future period is obtained, and historical operation condition data of the communication system is extracted.The application introduces a double correction factor mechanism under the condition of predicted voltage disturbance by constructing a motor train unit communication management method based on AI analysis, dynamically corrects the route priority improvement range of the backup link, and thus realizes fine adjustment of a link scheduling strategy.

The invention provides a low-delay Bluetooth group communication system and communication method in a physical education scene. Belongs to the technical field of Bluetooth communication. The method comprises the steps that a two-dimensional code on a bracelet is scanned through a physical education special APP, after the APP reads two-dimensional code information, service data are issued to the bracelet, initialization binding of the bracelet is completed, and an initialized bracelet list is generated; dynamically grouping the student bracelets participating in the same physical education course according to the initialized bracelet list; in the data transmission process, a batch ACK mechanism is adopted to generate batch ACK packets, and the ACK packets are sent back to the bracelets through Bluetooth broadcast; and sending and receiving the batch ACKs, and marking the corresponding data packets to be in an uploaded state after the bracelet receives the batch ACKs. Through a subpackage sending mechanism, the problem of Bluetooth transmission byte limitation is effectively solved, complete transmission of heart rate, motion data and the like is ensured, data loss is avoided, and the accuracy and integrity of the data are ensured.

The present application relates to the technical field of wireless communication, in particular to an antenna radiation and mutual coupling collaborative optimization system based on a time-domain hybrid fast algorithm. The antenna radiation and mutual coupling collaborative optimization system based on the time-domain hybrid fast algorithm is applied to a UAV group communication system, and comprises an antenna array unit, a data acquisition unit, a time-domain hybrid fast algorithm unit, a mutual coupling calculation unit, an optimization control unit and a communication coordination unit. In the present application, the three-dimensional geographic coordinates, attitude angle data and signal strength of the UAV group are acquired in real time by the data acquisition unit, and the real-time mutual coupling coefficient analysis of the mutual coupling calculation unit is combined, so that the system can dynamically perceive the formation mode change and trigger the optimization instruction, and the optimization control unit compares the preset threshold value, preferentially adjusts the node with the largest deviation degree, ensures that the antenna spacing and the radiation pattern are always adapted to the dynamic environment, reduces the mutual coupling effect, and significantly improves the communication stability.

The present invention discloses a WEB-based multi-module communication system, which relates to the technical field of multi-module communication. The WEB-based multi-module communication system includes a WEB application module, a first WiFi module, a second WiFi module, a first peripheral device, and a second peripheral device. The first peripheral device is configured to send a first instruction to the first WiFi module in response to a first operation by a user; the first WiFi module is configured to send the first instruction to the WEB application module based on a WebSocket protocol; the second peripheral device is configured to send a second instruction to the second WiFi module in response to a second operation by the user; the second WiFi module is configured to send the second instruction to the WEB application module based on a WebSocket protocol; the WEB application module is configured to receive the first instruction sent by the first WiFi module and the second instruction sent by the second WiFi module, and send the first instruction to the second WiFi module based on the WebSocket protocol, and send the second instruction to the first WiFi module.

The invention is suitable for the technical field of motor train unit communication management, and provides a motor train unit communication management method and system based on AI analysis, and the method comprises the steps: obtaining the current route priority improvement amplitude of a standby link when a link stability risk caused by the instantaneous disconnection of a pantograph net in a future time period of a target motor train unit communication system is predicted, and acquiring a predicted voltage disturbance index corresponding to the future time period, and extracting historical operation condition data of the communication system. According to the method, the AI analysis-based motor train unit communication management method is constructed, a double-correction factor mechanism is introduced under the condition of predicting voltage disturbance, and the route priority lifting amplitude of the standby link is dynamically corrected, so that fine adjustment of a link scheduling strategy is realized.

The invention relates to a data transmission module communication method and system, computer equipment and a storage medium. The data transmission module communication system is characterized in that when a main node election condition is triggered, a node management module determines the node type of each data transmission module node according to a current network load and node information broadcasted by each data transmission module node in a data transmission module network, the node type comprises a main node or a non-main node, and the main node election condition is triggered; the method comprises the following steps: selecting one of a plurality of data transmission module nodes as a main node, and forwarding a data packet sent by a non-main node by using the main node, thereby realizing the network communication of the data transmission module, and not needing manual configuration in the data transmission module network. The main node can be automatically elected only by combining the current network load and the node communication capability of each data transmission module node, and compared with manual configuration of a new main node, the determination time length of the main node is greatly shortened, so that the problem that the time length of manual intervention of configuration of the main node is relatively long when the main node needs to be elected again is solved.

Medium, method and system for ad hoc, ambient, synchronous multimedia collaboration in a group-based communication system. Embodiments of the invention provide a way for users to quickly establish a real-time collaboration among a group of peers without the burden and overhead of a conventional call or video meeting. Users can quickly and easily join and leave these synchronous multimedia collaboration sessions at any time, without disrupting the session for other users. This enables the user to experience the collaboration as a convenient forum rather than a burdensome scheduled event.