Telecommunications Blog

** Conditions :

• capacity not constant.
• separate analysis for UL/DL.
• joint coverage/capacity analysis.
• HO areas and levels affect directly system capacity.
• basic shared resource is power.

** Objective parameters :


• coverage.
• capacity (blocking).
• good link quality (BER, FER).
• throughput delay, for packet services Methods.
• preplanned during network planning process.
• real time radio resource management.
• real time power control.








Resource reservation for handling expected traffic without congestion.
           – load per cell/sector, handover areas.

Sets allowable “power budget” available for services.
           – load higher than expected.
           – load “badly” distributed.
           – implements statistical multiplexing.

Estimates average power/load, variations of it are taken care in run time by RRM.
           – maximal allowed load versus average load.

Planning methods

•  Preparation phase.
           – Defining coverage and capacity objectives.
           – Selection of network planning strategies.
           – Initial design and operation parameters.

• Initial dimensioning.
           – First and most rapid evaluation of the network elements count and capacity of these elements.
           – Offered traffic estimation.
           – Joint capacity coverage estimation.

• Detailed planning.
           – Detailed coverage capacity estimation.
           – Iterative coverage analysis.
           – Planning for codes and powers.

• Optimisation.
           – Setting the parameters.

• Soft handover.

• Power control.

• Verification of the static simulator with the dynamic simulator.
           – Test of the static simulator with simulator where the users actual movements are modelled.

  It was agreed that any new security architecture must be based on an evolution of GSM and must adopt four basic principles:

•   It will take into account the additional features needed for actual or predicted change in the operating environment

•   It will maintain compatibility with GSM wherever possible

•   It will retain those features of GSM that have proved to be robust and useful to the user and network operator

•   It will add or enhance features to overcome actual or perceived weaknesses in 2G system

1-  Additional features :

  One of the main reasons for the development of the 3G system to make higher value services available to as many users as possible world wide, using a universal design of the handset. However, this increases the number of relationships, as the number of Users, Service Providers, and Network Operators in the market expands.

  This increased level of service interaction increases the number of potential attackers and the opportunities open to them. This was not too much of a problem in the initial roll out of GSM, as there were a relatively small number of operators and the risk of compromise was low.

  For 3G, the networks are getting smaller and more numerous, so opportunities for hackers and other abusers of networks will increase. Even if deliberate abuse is not considered likely, unintentional mishaps may occur as a result of the complexity and the rate of new service introduction.

Planning

     • Planning should meet current standards and demands and also comply with future requirements.
     • Uncertainty of future traffic growth and service needs.
     • High bit rate services require knowledge of coverage and capacity enhancements methods.
     • Real constraints
               – Coexistence and co-operation of 2G and 3G for old operators.
               – Environmental constraints for new operators.
     • Network planning depends not only on the coverage but also on load.

Objectives of Radio network planning

     • Capacity:
               – To support the subscriber traffic with sufficiently low blocking and delay.
     • Coverage:
               – To obtain the ability of the network ensure the availability of the service in the entire service area.
     • Quality:
               – Linking the capacity and the coverage and still provide the required QoS.
     • Costs:
               – To enable an economical network implementation when the service is established and a controlled network expansion during the life cycle of the network.

   Samsung Galaxy Tab 10.1 3G tablet with no GSM voice communication capabilities.
   It supports GSM 850 / 900 / 1800 / 1900 & HSDPA 850 / 900 / 1900 / 2100 and Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot .It has been Announced in March 2011 .

   It will be release in June 2011.Its dimensions are 256.6 x 172.9 x 8.6 mm .Its weight is 595 g
The display type is TFT capacitive touchscreen, 16M colors and support :