UMTS TDD Simulations

Possibilities to use WinProp for UMTS TDD network planning 

Introduction


Compared to UMTS FDD networks the planning of TDD networks has to consider further aspects. The possibility to assign the radio resources flexible between uplink and downlink emphasizes the influence of the modeling of the traffic sources and the corresponding radio resource management algorithms.

Furthermore a realistic interference modeling includes also the MS-MS and BS-BS interference scenarios.

Basic Simulation Principle


The ProMan UMTS TDD simulator is based on the UMTS FDD module. Most aspects described with the FDD simulation tool apply also for the TDD simulator.


The dynamic simulation is based on a continuous generation of mobile terminals according to a specified arrival process. Radio ressources in form of time slots and spreading codes are allocated for all mobiles (if available). The number of required time slots and codes can be specified for each defined service.


A closed loop power control algorithm tries to set the transmission powers to reach the required service depending target SNIR level.


Some of the key features of the dynamic UMTS TDD simulator are:

  • Different services (e.g. Speech, Data)

  • Different Mobile Types

  • Configurable Traffic Generator

  • Power Control

Outputs


One important opportunity is the generation of output maps with the information covering the whole simulation area. To generate these maps a scan mobile is passed over the simulation area and tries to connect to the network at each receiver pixel. During this scan the state of the dynamic simulation is frozen.


The possible outputs include:

  • Resulting Cell Footprints (cell areas)

  • Required  Transmission Power (UL and DL)

  • Service Coverage

MS power map
BS power map
MS power map
BS power map

 

 

Brochure related to
3G Circuit Switched
Brochure related to
3G Packet Switched
Publications related to UMTS Simulators
Comparison of different simulator concepts
Read more about the Dynamic Simulator









cell area

Cell areas in a TDD network
(Computed with the
UMTS TDD simulator)

 

Propagation Models

The important determination of the inter-cell and intra-cell interference requires advanced propagation models.


AWE Communications provides a variety of these  propagation models for different scenarios and all models interact with he network planning module.


Please have a look at the propagation pages to get further infromation.

Application Areas 

To get more information about the usage of the 3G simulation tools for other applications you may have a look at the following links:

Brochures

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