Two-hop wireless network architecture

Abstract

The invention discloses a two-hop wireless network architecture, which comprises terminal equipment, relay equipment and gateway equipment, wherein the gateway equipment broadcasts a preset broadcast message to the terminal equipment in real time; the terminal equipment monitors and receives the preset broadcast message and determines a signal-to-noise ratio and the received signal strength under the current condition through combination with the actually-received message; the relay equipment alternatively carries out dormancy and revival; when the terminal equipment needs to send data to the gateway equipment, the data is selectively and directly sent to the gateway equipment according to the determined signal-to-noise ratio and the received signal strength under the current condition or the data is indirectly sent to the gateway equipment through the relay equipment; and when the data is indirectly sent through the relay equipment, the terminal equipment adds a lead code in the front of to-be-sent data, and when the relay equipment monitors the lead code, a revival state is kept until to-be-sent data corresponding to the lead code is received and forwarded. The two-hop wireless network architecture has the advantages of low cost, low complexity, low energy consumption and the like.

Description

technical field [0001] The invention relates to the field of wireless internet of things. More specifically, the present invention relates to a low-power two-hop wireless network architecture based on narrowband communication technology. Background technique [0002] In the Internet of Things, a large number of terminal devices will be connected to the network wirelessly. These devices need to consume power when communicating, and in many scenarios, they can only be powered by batteries and need to work for a long time, so it is necessary to reduce the energy consumed by them, that is, to consider reducing wireless communication when designing the network architecture. power consumption. On the other hand, the distance of wireless communication also affects the design of network architecture. The traditional wireless Internet of Things usually uses two network architectures, namely ad hoc network and star network. Ad hoc network usually refers to the formation of dynamic...

AI Technical Summary

Problems solved by technology

However, in the actual deployment of a star network, although the wireless coverage of the gateway is far away and the coverage area is large, the physical location of some terminal devices is often in a complex environment. Due to factors such as occlusion and interference, terminals and Stable direct communication between gateways may not be possible