Abstract: The disclosure is related to a method and a system for adjusting a communication channel based on a signal scan result. The system includes wireless gateway modules, a wireless transceiver module and a control circuit. The control circuit determines whether or not the wireless transceiver module conducts any transmission task. The wireless transceiver module is activated to scan signals over a selected frequency when it is available. Multiple scan results can be obtained when the scanning process is repeatedly conducted in different frequencies. Signal information is recorded in a signal scan table. Thus, if the system determines the frequency needs to be adjusted based on a transmission status, one of the frequencies recorded in the table can be chosen and set for the wireless gateway module and a transmission frequency for a terminal node is modified.

Abstract: The disclosure is related to a method and a system for long-distance full-duplex wireless communication. The system is mainly composed of a control circuit, at least one wireless transmission module and one or more wireless gateway modules. The wireless gateway module can receive data from a terminal node via one of multiple channels. The control circuit instructs a wireless transmission module to transmit data. The system utilizes the wireless transmission module to deal with the data from the gateway modules. In the method, in order to achieve full-duplex communication, the system obtains transmission parameters of every terminal node, sets up a transmission schedule with respect to signals having various frequencies within designated time slots according to the operating environment of the node, assigns a transmission priority within the time slots and stores the setting in the node.

Abstract: The disclosure is related to a multi-gateway communication method. The method is applied to a wireless gateway system that includes multiple nodes including a number of gateways. A root gateway is provided among the gateways. When a gateway receives an uplink data from a node, the uplink data is transmitted to a backend server if the gateway is the root gateway. The uplink data is transmitted to a parent gateway if the gateway is not the root gateway. On the other hand, when the gateway receives downlink data from a node, it is determined if a destination node is recorded in a downlink routing table of a descendant gateway if gateway is not connected with the destination node but with the descendant gateway. If the destination node is recorded in the downlink routing table, the data is transmitted to the descendant gateway; otherwise, the downlink data is discarded.

Abstract: A wireless communication system, a communication method, and a portable transceiver device are provided. The wireless communication system includes a server, a plurality of gateway devices and user-end portable transceivers that are interconnected by a wireless WAN protocol, e.g. LoRa. Each portable transceiver connects a user device via a near-end wireless communication protocol that allows the user device to connect with the server via a gateway device. After the user device sends a message through the portable transceiver, the server discovers another portable transceiver and another gateway device according to a destination address. Thereby, the message can be transmitted via this connection, or a direct voice communication can be performed via a communication channel over this connection. The communication system therefore provides a communication service under the wireless WAN protocol that is an alternative to traditional mobile communications.

Abstract: A wireless communication system is comprised of a control circuit, a wireless transmission module and one or more wireless gateway modules. The wireless gateway module receives data from a terminal via a channel. The control circuit performs a control method for instructing the wireless transmission module to transmit the data. The system utilizes the wireless transmission module to deal with the data from the gateway modules, and outputs the data via the module. This framework is a great benefit to the system due to its scalability and high performance. In the method, the wireless gateway module receives data, the control circuit computes a transmission time and generates a transmission request, the request and the data are transmitted to a transmission queue and then to the wireless transmission module, and the wireless transmission module determines a transmission channel for transmitting the data.