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System Planning

From satellite systems to multimedia wireless, from rural fixed telephony to urban mobile cellular systems, we are able to help our clients plan their systems to maximise the efficiency of spectrum use, ensure that performance objectives are achieved and minimise the cost of required infrastructure.

Examples of how we can help include:

  • Designing radio links in order to achieve a particular performance objective based on equipment and propagation behaviour taking account of intra- and inter-system interference.
  • Trading-off different network or system parameters including multiple access methods, diversity, performance objectives, coverage requirements and network architecture.
  • Collating, verifying and processing the technical data that has to be submitted both at a national and international level for the purposes of licensing and co-ordination.
  • Client support and, if required, representation during the licensing and co-ordination process.

We have experience in system planning across a wide range of radio applications including broadcast, fixed, mobile and satellite systems.

Cellular Network Design

Our engineering staff have been actively involved in the design and optimisation of cellular networks. We are able to help our clients at all stages of the design process including rf system engineering design, cellular network operation performance analysis and optimisation, and traffic engineering and planning. We are also able to offer to our clients consultancy and technical support services regarding cellular network design and expansion.

Our engineers have extensive experience in analysing cellular network scenarios and environments. We conduct radio propagation modelling and interference analysis using the Aegis Spectrum Engineering Toolkit, together with a variety of mathematical tools deploying a wide range of empirical and theoretical propagation models that take into consideration parameters such as network environment (dense urban, urban, suburban or rural), terrain, atmospheric and building penetration losses. Our extensive knowledge of base-station sub-system (BSS) equipment combined with expertise in rf spectrum management enables us to assist our clients in all the issues related to cellular network planning.

Rural Telecommunications

Although there is a considerable demand for telecommunications in rural areas, providing cost-effective telecommunication services is a challenging task, as density and clustering of subscribers is too low to make the provision of cable or conventional radio solutions economic. Desirable features of rural communication systems are:

  • economy of installation and operation
  • ease of maintenance
  • structural simplicity

Our expertise in rural communication network system planning comprises a thorough awareness and understanding of appropriate technologies for provision of communication systems in rural areas, particularly in developing countries. We have built up considerable skill and experience in the modelling and analysis of radio systems and the use of propagation modelling related to the rural networks. In particular, we specialise in:

  • the definition of meaningful measures of spectrum efficiency for rural network applications
  • the derivation of straightforward design rules to ensure that networks meet the performance measures
  • the development of discrete event simulation platforms to simulate the spectral usage with various levels of detail in order to predict, correctly, the network performance observed in real applications
  • the development of routing, channel assignment and power control algorithms for improvement of network spectrum efficiency

Satellite Communications

The user demands placed on satellite systems require that a careful balance be struck during the satellite system design. This balance has to take account not only of the most cost-effective overall architecture, but also the technical regulation under which the transmissions must operate. We have provided expertise in satellite communication system design for over a decade, enabling us to advise our clients in areas such as:

  • The design of innovative satellite systems, where existing technical regulations will not always embrace the particular application being considered. It is then necessary to take account of the technical background to the existing regulations so that, on the basis of a justifiable extrapolation from this technical background, the system design can be undertaken.
  • Satisfaction of a multiplicity of communication requirements, where it is essential that the flexibility designed into the architecture is not dominated by a single requirement.
  • System operation at higher frequencies where propagation impairments become a significant design factor.
  • Interference prediction and international co-ordination.

Broadcast

Aegis engineers have practical experience of the planning of terrestrial broadcast networks, for both radio and television services, at frequencies ranging from LF to UHF. We have also undertaken studies related to the implementation of digital broadcast networks using the COFDM techniques that form the basis of the European standards for both digital TV and radio in Europe.

Elements of broadcast planning with which we have been concerned include:

  • the estimation of network coverage in terms of area and population
  • the prediction of interference to or from proposed new services, taking into account agreed assignment plans (e.g. Geneva '84 or Wiesbaden '95)
  • the specification of transmitter and antenna characteristics
  • site survey and testing

To discuss how Aegis could help plan your fixed, mobile, broadcast or satellite system, contact us at enquiry-2015@aegis-systems.co.uk.

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See also:

Co-ordination | Interference Analysis | Product Support | Representation


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