Title :
Uplink user bitrate adaptation for packet data transmissions in WCDMA
Author_Institution :
Wireless Commun. Res. Lab., Ericsson Telecomunicazioni SpA, Bologna, Italy
Abstract :
The possibility to adaptively select the user bitrate for packet transmissions in a WCDMA system, is analysed as a strategy to solve local coverage problems, such as those for mobiles at the cell border. Two basic bitrate adaptation schemes have been evaluated: one based on the estimation of BLER (block error rate) experienced by the user, the other based on the mobile output power. For both of them, bitrate changes are controlled and performed by the mobile terminal. System simulation results show an improvement of the system performance which can be seen in terms of coverage, having the same QoS, or better QoS, maintaining the same coverage area
Keywords :
broadband networks; cellular radio; code division multiple access; data communication; error statistics; multiuser channels; packet radio networks; quality of service; radio links; QoS; WCDMA; block error rate; cell border mobiles; local coverage problems; mobile output power; mobile terminal; packet data transmissions; system performance; system simulation results; uplink user bitrate adaptation; Bit rate; Data communication; Delay; Error analysis; Multiaccess communication; Power generation; Radio control; Telecommunications; Throughput; Wireless communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-6463-5
DOI :
10.1109/PIMRC.2000.881670
