A proposal on frequency management methodologies for WCDMA systems using cell coupling matrices

Jad Nasreddine (1) , Jordi Perez Romero (1) , Oriol Sallent (1) , Ramon Agusti (1) , Xavier Lagrange (2)

1 UPC - Universitat Politècnica de Catalunya = Université polytechnique de Catalogne [Barcelona]
2 RSM - Département Réseaux, Sécurité et Multimédia

Although a single carrier frequency is usually considered in Wideband Code Division Multiple Access (WCDMA) systems, each operator has more than one carrier frequency in practical 3G systems. Moreover, QoS levels and the throughput within a given frequency highly depend on interference patterns, which are mainly related to cell-frequency allocation. Therefore, frequency management plays a key role in WCDMA network planning. However, the frequency management problem has not been in the center of attention for WCDMA systems so far due to the fact that WCDMA has not yet been implemented in wide range with all possible services. Nevertheless, the arrival of multimedia services will emphasize the critical importance of a smart frequency allocation. In this context, the presence of several frequencies for each operator (typically 2 or 3 in Europe) manifests itself as a fertile dimension of flexibility to be exploited. This paper introduces a novel frequency management methodology based on coupling matrices that reflects the interaction between cells for a given interference pattern. The proposed methodology is implemented as an integral task of the planning tool and has lead to better results than the frequency allocation in the classical hierarchical cell structure

Mots clés: 3G mobile communication; Channel allocation; Code division multiple access; Matrix algebra; Multimedia communication; Telecommunication network management; Telecommunication network planning

Domaines: Multimédia [cs.MM]; Réseaux et télécommunications [cs.NI]

Jad Nasreddine, Jordi Perez Romero, Oriol Sallent, Ramon Agusti, Xavier Lagrange. A proposal on frequency management methodologies for WCDMA systems using cell coupling matrices. VTC 2006 : 64th IEEE Vehicular Technology Conference, Sep 2006, Montréal, Canada. pp.1 - 5, ⟨10.1109/VTCF.2006.271⟩. ⟨hal-02345908⟩