Adaptive SAT Allocation for TACS

Johan Cederlund

Master Thesis, Report UPTEC 95141E, 50 pp, December 1995.

Abstract:

In this thesis, the performance of a suggested algorithms for slow adaptive channel allocation is evaluated. The algorithm is studied regarding the adaptive allocation of Supervisory Audio Tones, SAT, in the cellular system TACS. The objective is to make an automatic channel allocation concept possible for a TACS mobile communication system, which would facilitate the procedure of frequency planning.

In order to analyze the behavior and conditions of the adaptive SAT allocation, the handoff procedure has been studied with simulations. The adaptive SAT allocation has been evalued against systems using fixed plans of SAT based on both very good and random allocations of SAT.

From the results, it can be concluded that the suggested algorithm for slow adaptive channel allocation should not be applied to the allocation of SAT. The reason for this is that no information from the neighbor cells is used in the selection process of SAT, although these cells are responsible for the identification of the mobile stations during the handoff procedure by means of SAT. By not taking this information into consideration when allocating the SAT, difficulties will arise in the process for identifying the mobile stations during the handoff procedure.

Company:

Ericsson Radio Systems AB

Thesis Advisor:

Mikael Sternad

Related Master Thesis on adaptive channel allocation for TACS.