Basic structure of communication network

The basic structure of the communication network is as follows:

Mesh structure:

Mesh structure is a network composed of multiple nodes, and each node can communicate directly with other nodes. This structure has high redundancy and reliability, and is suitable for occasions with fewer nodes and higher reliability requirements. But its disadvantages are low line utilization rate, high cost and difficult capacity expansion.

Star structure:

The star structure takes a central node (such as a switch or server) as the core, and other nodes are directly or indirectly connected with the central node. Star structure is easy to manage, maintain and expand, but its reliability is relatively low, because when the central node fails, the whole network will be affected.

Bus structure:

Bus structure is a network that connects multiple nodes on the same transmission line in turn. This structure is simple, low cost, but poor scalability, easy to be affected by faulty nodes.

Ring structure:

The ring structure is a closed loop composed of multiple nodes, and the nodes are connected with each other through links in the loop. The ring structure has high reliability and fault resistance, but its expansibility is limited.

Tree structure:

Tree structure is a network with a root node as the core and other nodes connected hierarchically. Tree structure has good hierarchy and expansibility, but its reliability is limited by the number of hierarchies.

Composite structure:

Composite structure is a network composed of various basic structures, such as star bus and star ring. This composite structure combines the advantages of various structures and has high reliability, expansibility and manageability.

In practical application, the structure of communication network can be adjusted and optimized according to service type, coverage, transmission mode and operation mode. Such as a telephone communication network (e.g., PSTN, mobile communication network, etc.). ) and radio and television networks. In addition, with the development of modern communication technology, the topological structure of communication network is constantly evolving, such as from traditional circuit switching to packet switching, optical communication, wireless communication and Internet.