TRANSPORT NETWORK PARAMETERS

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TRANSPORT NETWORK PARAMETERS

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Once the service is selected and the transport network is created, a dialog will open to configure transport network parameters.

link_network

Parameters to configure in a transport network are the following:

Name. Transport Network study identification name.

Description. Feedback or information that the user wants to add to provide more information.

Cartography for calculation of intervisibility and interference. It has a list with cartographic layers, such as digital terrain models or digital elevation models (digital terrain models that also contain the buildings heights), to be used in calculation. To add or remove study layers it is possible to access the cartography management window through the icon modify_common_small.

Links under study.  All the profiles which belong to our network have to be incorporate to this list. For this purpose, you have the following options:

oico_perfil_nuevo To create a new Link study, which will only appear as part of this study, and not in the general list of studies.

oadd_profile To add an existing link in our user's profile.

oextract_profile To extract a link from this list and from the study.

ochange_profile  To extract a link from the profiles list under study (desired profiles) and adding it to the list of enviroment profiles (interfering profiles)

oremove_common_small  Delete a profile (Attention: it deletes the study from the database).

 

Environment links. It will be necessary to incorporate to this list all the profiles that, although not belonging to our network, they exist in the near environment and could be an interference source or may be interfered with. To make this list has, the user has the same options as above:

orefresh_common_small Reload links from the inventory.

oico_perfil_nuevo To create a new Link study, which will only appear as part of this study, and not in the general list of studies..

oadd_profile To add an existing profile.

oextract_profile To extract a profile from this list and from the study.

ochange_profile To extract a profile from the list of profiles under study (desired profiles) and adding it to the list of enviroment profiles (interfering profiles).

oremove_common_small Delete a profile (Attention: it deletes the study from the database).

 

Interference parameters. In this tab you can configure the following parameters:

oInterference compute method. Algorithms to be used in the calculation of interference. You can change the compute method and parameters by selecting the icon modify_common_small.

oInterference evaluation method. Interference Reduction Factor (IRF) method evaluates interference from the spectral masks of transmission filter and receiver sensitivity masks obtained from methods described in the ETSI standards and configured in interfering and interfered ends modulations. With the "C/I Matrix Method", interferences are evaluated from the C/I mask (NFD) configured in the interfering and interfered end modulations. Finally, calculation can be more generically if there are not accurate data from the manufacturer using "Rejection Factors" method.

oRejection factor. The rejection factor specifies how interfering signal affects based on radio service, the separation in frequency, etc.  It is possible to add a new rejection factor by clicking the icon add_common_small , or modify the default settings by clicking the icon modify_common_small.

oConsider ATPC (Automatic Transmit Power Control). In case this option is activated, the links interfering power using this will decrease the number of dB specified in each modulation.

oInterfering modulation selection. When a device is able to emit in different modulations Xirio allows the user to choose between the restrictive option, which is the one that has more power of all equipment modulations. Either the least restrictive, which has one with the lowest modulation power .

oMargin of C/I viability. The C/I viability margin specifies how much the co-channel protection ratio needs to be increased to ensure the viability of the environment link considering only new interference generated by in-service links. It is used to display, in the transport network summary report, any incompatibilities introduced by new links. In this way, not only C/I threshold of interfering equipment will be taken into account, but also the calculated C/I is forced to be above C/I threshold plus C/I viability margin.