Janne Laakso

Auto-tuning of service-specific requirement of received EbNo in WCDMA

The paper validates the feasibility of auto-tuning of service- and bit rate-specific EbNo (E/sub b//N/sub 0/) requirements. The EbNo requirement is the level of the received bit energy to the interference and noise density that the receiver equipment requires for proper decoding of the signal. The planned EbNo values can be used e.g., to scale the powers when the service is varying. The proposed methods, one for uplink and one for downlink, are tested using a dynamic WCDMA system simulator with a deployment of macrocells on a city region whose measured propagation characteristics have been incorporated into the model. The results show that the proposed methods tune the initially incorrect planned EbNo values so that the throughput in the system increases.

Radio resource knapsack packing for WCDMA air interface

A set of optimisation algorithms are studied for high density wideband code division multiple access (WCDMA) mobile networks. The method to be introduced is a radio resource knapsack packing, as packet traffic is the main consideration. The method includes centralised packet scheduling (PS) and power control (PC) algorithms that will maximise a utility function defined by the operator. The goal of the proposed algorithms is to maximise either the throughput of the system (a cluster of cells) or the value of the correctly received packets.

Radio resource knapsack packing for WTDMA air interface

A set of algorithms are studied for high density mobile networks to pack coexisting time slots of wideband time division multiple access (WTDMA) frames in an effective way. The method is introduced as radio resource knapsack packing, as packet traffic is the main consideration. The method includes centralised channel assignment and power control algorithms that will maximise a utility function defined by the operator. The goal of the proposed algorithms is to maximise either the throughput of the system (a cluster of cells) or the value of the correctly received packets.