9 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).

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 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.

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 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 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.

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.