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Technology - Tele informatics

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Transit level of telecommunication environment – Expresses interconnection of single nodes (ATM). It is characterised by high transmission rates. The node interconnection architecture can lead to various availability values, such as:

  • Ring architecture – has high availability of transmission

  • Grid architecture – has high availability of transmission

  • Star architecture – has low availability of transmission

Access network – has a character of a local network but with respect to the character of transmission of information, it is necessary to secure an integrated transmission as close as possible to the particular application. Therefore, also access networks have to comply with higher requirements on transmission availability.

  • Local access network – Requires transmission of information between the access network node and single information sources (sensors). From the point of data carrier, the network can consist of various types of telecommunication environment.

  • Permanent networks – Consist of metallic or optical cable networks.

  • Radio networks – Networks in which air is the transmission media. There are various types of analogue and digital networks (GSM, TETRA, microwave links, etc.). These networks will be used always where there is not permanent network available (namely in access networks districts). Reliability of radio transmission has only a limited level.

  • Satellite transmission – Satellite channels are used for transmission of information. They are used always where there is no permanent network available. The concept of transmission reliability in satellite communication is somewhat complicated.

According to the type of transmitted information, the transmission can be divided in to the following types:

Transmission of static information – This requires no special telecommunication environment to be created. The transmission can be realized in any telecommunication environment, where the main decisive criterion will be price for the transmitted information. However, creation of the telecommunication environment must correspond not only with basic characteristics, but it also has to meet user’s requirements on availability, security and reliability of transmission.

Transmission of dynamic information – this requires a special telecommunication environment to be created, namely in the access section. If applications will have a sufficient level of security, the transit network levels of various operators can be utilized, because they are generally constructed to provide sufficient availability and reliability of transmission. The network architecture will be specified by means of analytical and optimization methods so as to meet the requirement on transmission parameters of single applications. From the point of view of information transmission, the network can also be monitored on vertical and horizontal levels.

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