ACCESS NETWORK PLANNING
The generic process of planning an access network includes one or more basic steps to establish a Network Nominal Plan.
A Network Nominal Plan establishes the number and configuration of sites and equipment involved in the network, considering noise limitations (maximum radio range) of the network without taking into account possible limitations due to interference or electromagnetic compatibility (EMC) between each other.
All parameters used by default in Xirio, are sufficient to achieve this stage of planning.
The basic steps for achiving a nominal network plan are:
NEEDS ANALYSIS - CONFIGURATION
Previously in the planning process, the planner should know clear what technology will be used in the network, what are the qualitative and quantitative coverage objectives and the methodology that wants to use to design the network.
•The basic cartography to work with.
•Calculation Method to use.
•Equipment and technology data: radio service, frequency bands, antennas, etc..
•Locations already known.
In this phase, the parameters regarding to technology used and radio station are characterized for a single emission center. To do so, we are supposed to know the technology used by the network, the equipment, the technical data and propagation models we intent to use in simulations.
It is important to stand out that in Xirio there is no concept of "radio station" or "Base Station". By contrast, there is the concept of site as the radio infrastructure geographical location, and the concept of transmitter as an element connected to an antenna and capable of emitting electromagnetic waves. At the same site there can be multiple transmitters. Where the technologies use Base Stations with several sectors (eg.: LMDS, GSM, etc..) each sector should be considered a separate transmitter. On the other hand, those technologies that use multiple carriers from a single transmitter (eg.: GSM, TETRA, radio, etc..) can link all the channels to a single transmitter.
If the planning project is limited to know the scope of a single radio station, it probably completes its work in this functionality block. If, however, the project's objective is to plan a multiple stations network you must use other more complex studies of the application.
The multi-coverage study analyzes coverage of multiple transmitters. This requires having a coverage study linked to each transmitter involved. The result of this study allows to know the total network coverage, the overlap between individual coverages of different transmitters and the areas where each one acts like best server.
Once the study of multiple coverage is done, the user has a reliable guide to the scope of its network, represented as spot coverage on the map.