Method for realizing peer-to-peer network based on IEEE (Institute of Electrical and Electronic Engineers) 802.15.4

Abstract

The invention discloses a method for realizing a peer-to-peer network based on IEEE (Institute of Electrical and Electronic Engineers) 802.15.4. The protocol stack is divided into a physical layer, a link layer and an application layer. The physical layer and the link layer are defined by the IEEE802.15.4 while the application layer is designed autonomously. The network channels, PANIDs (Personal Area Network Identifier) and network addresses of all nodes are respectively set as same values. The nodes are differentiated by using a 64-bit extended address which is globally unique and cannot be changed. Each node has an equipment name which is determined by a user. Each equipment name comprises maximally 10 bytes. According to the invention, as long as other similar nodes exist in a communication range of a certain node, the certain node can communicate with the similar nodes; a plurality of similar nodes in a certain area automatically form a peer-to-peer network; all nodes are peer-to-peer with no need to create and maintain the network by a central node. Each node can join in and leave autonomously, and the network is not finished until the last node leaves.

Description

technical field [0001] The invention relates to a wireless peer-to-peer network based on the IEEE 802.15.4 protocol. Background technique [0002] Peer-to-peer network is a distributed application architecture, nodes in this type of network can work together to complete a certain task. Different from the traditional Client / Server model or Master / Slave model, the nodes in the P2P network have the same priority and are equal participants. Nodes divide their own resources, such as computing power, storage space, and network bandwidth, into several parts for use by other network participants. The entire process does not require centralized coordination by servers or central nodes. Each node is a provider and consumer of resources. Each device can actively communicate with other devices. [0003] The IEEE 802.15.4 protocol supports the Peer-to-peer topology. In the Peer-to-peer topology, any device can directly communicate with other devices as long as they are within the sign...

AI Technical Summary

Problems solved by technology

[0004]However, the Peer-to-peer network defined in the IEEE 802.15.4 protocol still needs a central node to form the network. Once the central node leaves, the network does not exist , which causes other users in the network to fail to communicate

If other users want to continue to communicate, they need to re-select a new central node and re-do the networking process, and the network disconnection during this period is inevitable

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