1. Advantages
Advantages of wired transmission:
The technology of wired transmission has been quite mature, and compared with wireless transmission, it is easier to set up and the supporting facilities are more perfect. Wired transmission technology will begin to try to apply artificial intelligence, automatic control and other technologies to achieve automated intelligent processing of information data, and the future wired transmission technology will continue to develop in this direction.
Advantages of wireless transmission:
Wireless data transmission only needs to maintain the number of transmission modules, and in the event of a failure, the cause can be quickly found and the normal operation of the line can be restored. Wireless data transmission only needs to connect the new equipment and the wireless number transmission radio, which can realize the expansion of the system and has good scalability.
2. Disadvantages
Disadvantages of wired transmission:
Check the maintenance status of the cable communication link along the way. When a fault occurs, it is often difficult to find the fault. After the user sets up the communication network, due to the needs of the system, new devices are usually added, and the use of wired transmission may require rewiring.
Disadvantages of wireless transmission:
Due to the use of microwave transmission, the frequency band is above 1GHz, the transmission environment is an open space, if used in large cities, radio waves are more complex, relatively susceptible to external electromagnetic interference.
The microwave signal is transmitted in a straight line, and can not be blocked by mountains and buildings in the middle. If there is an obstacle, it is necessary to add a relay to solve it, and the Ku band is more seriously affected by the weather, especially the rain and snow weather will have a more serious rain failure phenomenon.
1, wired media: twisted pair, coaxial cable and optical fiber. Wireless transmission media: microwave, infrared, laser or satellite.
2, wired media twisted pair cable price is low, low transmission speed; Compared from anti-interference and price, coaxial cable is between twisted pair and optical fiber; Optical fiber has the advantages of low attenuation of optical signal, high bandwidth and strong anti-interference ability. Wireless transmission medium is electromagnetic wave transmitted through the atmosphere.
3, the maintenance of the wired communication link needs to be checked along the road, when the fault occurs, it is generally difficult to find the fault point in time, and the use of wireless data transmission mode only needs to maintain the data transmission module, when the fault occurs, it can quickly find the cause and restore the normal operation of the line.