A communication method for avoiding collisions in a wireless single-channel communication network
A communication network and conflict avoidance technology, which is applied in wireless communication, instruments, electrical components, etc., can solve problems such as gateway node paralysis and single-channel communication network prone to conflicts, achieve high communication fluency, prevent the entire network from being paralyzed, cost-effective effect
Active Publication Date: 2022-05-06
HANGZHOU DIANZI UNIV
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[0004] The purpose of the present invention is to provide a communication method for avoiding conflicts in a wireless single-channel communication network, so as to overcome the problems that the single-channel communication network is prone to conflicts and the failure of gateway nodes leads to paralysis
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[0037] A communication method for avoiding conflicts in a wireless single-channel communication network, the specific steps are as follows:
[0038] Step 1, such as figure 1 As shown, a single-channel communication network is established, and the communication network includes a gateway node and a plurality of terminal nodes. The gateway node communicates with the server. Each end node communicates with a gateway node. A priority queue of network node numbers is stored in the gateway node and each terminal node. The gateway node also stores a ready queue and an urgent queue.
[0039] The function of the ready queue is that the gateway allocates the right to use the channel by querying the ready queue. The host numbers of all terminal nodes under the communication network are recorded in the network node number priority queue.
[0040] Such as figure 2 As shown, there are five states of the terminal node: (1) Ready state: when the terminal node generates data and needs t...
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The invention discloses a communication method for avoiding conflicts in a wireless single-channel communication network. The steps are as follows: 1. Set up a communication network, which includes a gateway node and a plurality of terminal nodes. 2. The communication network runs cyclically in the order of the preparation time period, the node communication time period, the network management time period, and the network idle time period. The invention solves the problem that the single-channel communication network is prone to conflict, and compared with the traditional single-channel network based on time division multiplexing, the invention has higher real-time performance. In addition, the gateway node proposed by the present invention can be migrated to any network terminal node through terminal node arbitration. Compared with the traditional fixed-location network, it can automatically switch to a new gateway node when the gateway node fails, and can prevent Faults lead to the occurrence of accidents that paralyze the entire network, which has higher flexibility and higher fault tolerance of the communication network.
Description
technical field [0001] The invention belongs to the field of Internet of Things communication protocols, and mainly relates to a method for avoiding conflicts during data transmission of multiple terminal nodes under a wireless single-channel communication network. Background technique [0002] The Internet of Things (IOT) is the extension and expansion of the Internet. It combines various information sensing devices with the Internet to form a huge network to realize intelligent perception, identification and management of objects and processes. The Internet of Things is mainly composed of network terminal nodes, communication networks and remote servers. IoT technology mainly involves sensor technology, embedded technology, wireless communication network technology and computer technology. Taking the mainstream wireless IoT technology LoRa (Long Range) on the market as an example, the typical technical indicators of LoRa are as follows: the working frequency band is 433-9...
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IPC IPC(8): H04W74/04H04W72/12H04W24/04G16Y10/75G16Y40/30
CPCH04W74/04H04W24/04G16Y10/75G16Y40/30H04W72/566
Inventor 蔡文郁谢起楠张美燕张铭坤
Owner HANGZHOU DIANZI UNIV