13 results about "Packet collision" patented technology

This invention provides an energy efficiency optimization method for the large-scale deployment of ultra-reliable low-latency (URLLC) devices, comprising: Step 1: Calculating the short packet collision probability and short packet reception failure probability of a single device, and calculating the packet loss rate of the device based on the calculated short packet collision probability and short packet reception failure probability; Step 2: Calculating the packet loss rate of each device, and grouping devices with similar communication environments into one category based on the calculated packet loss rate; Step 3: Optimizing the energy efficiency of all devices categorized in Step 2 using a deep reinforcement learning method. The beneficial effects of this invention are: 1. The method can effectively reduce the transmission power of sensing devices sending short packets and the number of times the same short packets are repeatedly sent, significantly improving the communication energy efficiency of URLLC devices and extending their battery life; 2. The method of this invention uses a classification method, which significantly shortens the training time of deep reinforcement learning.

A multi-channel time-coordinated transmission system and method for low-altitude identification signals, belonging to the field of multi-channel transmission technology, aims to address the problem of increased air interface packet loss rate in low-altitude, high-density flight scenarios, leading to flight trajectory loss in ground monitoring systems. The method includes: acquiring the transient kinematic parameters of a low-altitude flight entity within the current period and analyzing the spatial grid hash value corresponding to the physical space where the low-altitude flight entity is located; generating a time slot offset matrix covering multiple different radio frequency bands; extracting the time delay offset corresponding to each radio frequency band based on the time slot offset matrix; mapping the identification signal frame to be transmitted to a multi-channel radio frequency module; and using the multi-channel radio frequency module to stagger the broadcasting of the identification signal frame according to the time delay offset corresponding to each radio frequency band. This invention improves the anti-interference capability of identification signals in low-altitude, high-density scenarios and reduces the data packet collision rate and packet loss rate.

To perform polling while avoiding packet collisions in a wireless mesh network. [Solution] The lighting control system according to the embodiment comprises each device connected to a lighting control network and an information processing device that monitors the operating status of each device. The information processing device comprises a distribution unit that assigns each device to each group and a polling unit that polls the status of each device for each group assigned by the distribution unit.

The invention belongs to the technical field of Internet of Vehicles control, and particularly discloses a cellular Internet of Vehicles spectrum resource allocation method under hidden terminal influence. According to the method, firstly, a data packet transmission model is provided and used for describing the probability of data packet collision caused by the fact that two or more vehicles access the same channel resource and broadcast CAM, and the model can represent the probability of data packet collision caused by interference of exposed terminals and two types of hidden terminals under different inter-vehicle distances and vehicle densities at the same time. The invention further provides an inter-data packet receiving probability model which is used for describing a time interval between two successive successful data packet receiving. In addition, the invention further designs a self-adaptive multi-agent reinforcement learning scheme used for searching for an optimal channel resource allocation strategy for each V2V link, meanwhile, a hierarchical approximation strategy iteration mechanism based on a binary tree is introduced, and through hierarchical decomposition of a state space and local search optimal strategy search, an optimal channel resource allocation strategy is provided for each V2V link. The calculation complexity of reinforcement learning training is reduced.

Techniques for network management are described herein. In a network environment, such as a utility system (e.g., an electrical grid, a water supply system, a natural gas supply system), networked devices are used to upload data to a data-collector (e.g., central office server(s)). The networked devices can be grouped. In the example of an electricity grid, networked devices (e.g., smart electricity meters) can be grouped according to a transformer to which all of the members of the group are attached. To reduce network data traffic, data packet collisions, transmission retries, and power consumption, a "spokes-meter" may be selected. The spokes-meter is configured to accept data from other members of the group and to forward that data to the data-collector. The spokes-meter acts as a relay for other members of the group.

The invention relates to multi-gateway coordination in a thermal management system. Systems and methods are provided for coordinating gateway polling in a multi-gateway sensor system, such as a sensor system implemented in a data center for monitoring thermal conditions. The system comprises: at least two subsets of sensors in communication with at least two gateways; and a controller in communication with the at least two gateways, the controller configured to implement a dynamic polling scheme to coordinate polling of the at least two gateways. In embodiments, the dynamic polling scheme includes scheduling non-overlapping time slots for polling gateways and / or intervals for polling sensors to avoid data packet conflicts.

The application provides a networking system data transmission method, a networking system and an electronic device. The method is applied to a host in the networking system and includes the following steps. First data packets sent by multiple slaves are received. When it is determined that the received first data packets meet preset data window conditions, attribute information corresponding to the multiple first data packets and the number of target slaves are obtained. Based on the attribute information in the multiple first data packets and the number of target slaves, time slices corresponding to the target slaves are determined. The multiple time slices are broadcast according to target serial number information corresponding to the target slaves, so that the target slaves send second data packets according to the corresponding time slices. According to the embodiment of the application, multiple data packets from multiple slaves are aggregated by the host, so that the uplink throughput capacity of the system is improved. Moreover, corresponding time slices can be dynamically allocated according to the attribute information of the received data packets, so that data packet collision is avoided and the transmission efficiency is improved.

To avoid packet collisions in wireless mesh networks. [Solution] The lighting control system according to the embodiment comprises a plurality of lighting fixtures forming a wireless mesh network and a control device for controlling the lighting fixtures. The lighting fixtures transmit status packets indicating their own status information to the wireless mesh network at a transmission time determined by the control device, and transmit received packets received from other lighting fixtures to the wireless mesh network according to the timing of receipt.

A method of avoiding data packet collisions includes initiating, by a first electronic device, a Hands-Free-Profile (HFP) call event between the first electronic device and a third electronic device through a second electronic device, wherein the second electronic device and the third electronic device communicate using an extended Synchronous Connection-Oriented (eSCO) communication link during one or more pre-defined eSCO time intervals, establishing, by the first electronic device, a Bluetooth Low Energy (BLE) communication link with the second electronic device while the HFP call event is active, and in response to the establishing of the BLE communication link, configuring, by the first electronic device, one or more BLE time intervals to exchange one or more BLE data packets between the first and second electronic devices. The BLE time intervals are distinct from the eSCO time intervals to avoid the data packet collisions.

A communication rate optimization method and system for intelligent circuit breaker (PCB) data acquisition is disclosed. A master-slave 485 serial communication network architecture is adopted, with the master station communicating with multiple slave PCBs via an edge gateway. First, the broadcast parameters for the PCB data acquisition task are determined. The master station's edge gateway sends a call address command, and the slave stations respond according to priority, calculating communication parameters based on the number of devices and message length. The master station evaluates the overall data transmission time by calculating the response time interval and determines whether the communication efficiency is optimal. A communication rate optimization mechanism is established, with the master station dynamically adjusting the safety factor to balance stability and transmission efficiency. Specifically, this is achieved by detecting data packet conflicts, adjusting the safety factor calculation method, and optimizing the slave station response priority based on device alarm status. This invention enables one-question-multiple-response communication, automatically adjusting communication efficiency, and improving the efficiency of serial communication data acquisition.

This application discloses a scheduling method, scheduling device, electronic device, and computer program product. The method, applied to an access point (AP), includes: publishing preset configuration parameters to each associated station (STA), the preset configuration parameters being used to prohibit the STA from actively competing for the channel within a preset time period, the preset time period including multiple sub-time periods, each sub-time period including a first stage and a second stage; in the first stage, acquiring the remaining load information of each STA; determining a target STA based on the remaining load information of each STA, the target STA being: a STA whose remaining load, as indicated by the remaining load information, meets preset load conditions; and in the second stage, scheduling the target STA to send uplink packets. This application's solution can rationally schedule communication between the AP and STAs, reducing packet collisions between different devices.

According to the control method and system for the water valves in the farmland irrigation area, the medium, the program and the electronic terminal, a gateway sends broadcast commands to all the water valves in the same irrigation area at the same time through a control channel, a traditional low-efficiency mode of sending commands one by one is replaced, and parallel wakeup and action execution of the water valves are achieved. Meanwhile, the system is provided with an independent control channel and an independent feedback channel, and the control channel and the feedback channel work at different frequencies, so that command issuing and state reporting can be synchronously carried out and do not interfere with each other. Based on this, the water valve can autonomously report the state through the feedback channel without waiting for gateway polling after executing the action. In order to avoid uplink signal conflicts among the water valves, different waiting durations are set for each water valve, so that the water valves send state information in sequence in a time-sharing manner, and data packet collision is thoroughly avoided while the communication real-time performance is ensured.

Methods, systems, and devices for exchanging subband puncture information for network throughput management are described. In some examples, an access point may receive an action frame from a station device, which includes a disabled subchannel bitmap subfield that indicates subband puncturing information based on localized interference detected by the station device. The access point may then determine a negotiated subband puncturing pattern that considers both the station device's and the access point's detected subband puncturing information. Subsequently, the access point may transmit an action frame back to the station device containing this negotiated subband puncturing pattern. Both the access point and the station device may adhere to this negotiated subband puncturing pattern for future unicast frame exchanges, thereby enhancing network efficiency by effectively managing packet transmissions and reducing packet collisions.