Power and code shortage in UTRA-FDD downlink dedicated channels

This paper provides the framework for the design of downlink admission control algorithms in the FDD mode of UMTS. Such algorithms are responsible of accepting or refusing requests of new connections depending on the resource availability in the downlink direction, which is measured in terms of the power and the amount of OVSF codes required In all the existing connections. So a specific algorithm that account for both power and code availability is presented and it is analyzed for different situations, revealing the crucial parameters that should be appropriately set in order to ensure the QoS expected by all the admitted connections.

[1]  Oriol Sallent,et al.  A downlink admission control algorithm for UTRA-FDD , 2002, 4th International Workshop on Mobile and Wireless Communications Network.

[2]  J. Perez-Romero,et al.  Impact of user location in W-CDMA downlink resource allocation , 2002, IEEE Seventh International Symposium on Spread Spectrum Techniques and Applications,.

[3]  Joan J. Olmos,et al.  Transport block error rates for UTRA-FDD downlink with transmission diversity and turbo coding , 2002, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[4]  Claudio Guerrini,et al.  Signalling delay of code allocation strategies , 2002 .

[5]  Antti Toskala,et al.  Wcdma for Umts , 2002 .