Overview of Single Frequency Multipoint Transmission Concepts for HSDPA and Performance Evaluation of Intra-Site Multiflow Aggregation Scheme

WCDMA based third generation networks are widely deployed and 3GPP is constantly seeking to evolve their performance. It is a well-known problem that reception quality degrades at cell edges. Multipoint transmission from two separate cells can be used to overcome this problem in single frequency deployments. In this paper we make an overview of several techniques for single frequency multipoint transmission, which are under consideration in 3GPP. This study presents the simulation results of Intra-site Multiflow Aggregation scheme where UEs can receive two independent transmissions from separate sectors. The performance of Type 3 and Type 3i receivers is also benchmarked in such scenario. Considerable improvement of radio network performance is demonstrated for users with Type 3i receivers on the borders of the cells without any sensible negative effect for all other users.