Chengdu Ebyte Electronic Technology Co.,Ltd..
E52-400/900NW22S User Manual
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Copyright ©2012–2023, Chengdu Ebyte Electronic Technology Co.,Ltd.
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a data relay after receiving data. The multicast mechanism is relatively complex and can achieve one-to-many
communication. Users need to configure the multicast group address first, similar to a public address. Anycast is usually
used for data exchange between different networks. Data will not be forwarded under anycast. Under anycast, two
communication methods, unicast and broadcast, can be implemented depending on the target address. Users can transmit
any data to any module within the communication range.
During network transmission, data will be encrypted using special algorithms by default to ensure data privacy and
security. In addition, in order to avoid data errors caused by interference from other nodes, multiple verifications are
performed on the data at the network layer to ensure the reliability and accuracy of the transmitted data.
1.3 Function description
LoRa MESH: Using advanced LoRa modulation method, it has the advantage of long-distance anti-interference,
greatly improving the coverage of the entire MESH network;
Super large network capacity: the theoretical number of LoRa MESH network is as high as 65535, and the proposed
network size is about 200
；
Decentralization: The entire network is composed of only two types of nodes: terminal nodes and routing nodes,
and there is no need for a central node or coordinator to participate in network management;
Automatic routing: When initiating a data request, each routing node can automatically initiate connections with
surrounding nodes to determine the data transmission path, without the need for the coordinator to participate in
path planning;
Network self-healing: When a link fails, the routing node re-establishes a new path after several communication
attempts fail;
Multi-level routing: Routing nodes can automatically transmit data to lower-level routing, and the automatically
generated routing table controls the transmission direction of data;
Path optimization: Routing information will be continuously and automatically updated and optimized with data
transmission in the network to ensure the stability of the entire network;
Avoidance mechanism: CSMA avoidance mechanism can greatly reduce the possibility of air signal collision;
Communication methods: Supports four communication methods: Unicast, Multicast, Broadcast and Anycast;
E52-400NW22S module frequency range: works in the 410.125 ~ 509.125 MHz frequency band, supports 100
channels, and the channel spacing is 1 MHz;
E52-900NW22S module frequency range: works at 850.125 ~ 929.125 MHz, supports 80 channels, and the channel
interval is 1 MHz;
Multiple verification: ensure the reliability and accuracy of the data transmission process;
Multiple verification: ensure the reliability and accuracy of the data transmission process;
High throughput: The entire network is combined in time and space to achieve high concurrency performance;
Remote configuration: Supports remote changes of basic communication parameters of the entire network.
1.4 Network topology
LoRa MESH network supports two types of devices: routing nodes and terminal nodes.
Routing node: Routing node receives data in the network for routing updates and data forwarding.
Terminal node: Terminal nodes do not have routing functions and are generally deployed at the edge of the network.
