Existing standards-based code division multiple access (CDMA) systems
support circuit-mode and packet-mode data services at an effective rat
e limited to 8 to 13 kbls. Lucent Technologies has taken the lead in a
ddressing this limitation. Lucent's phase I solution offers the highes
t possible performance while conforming to current IS-95-A air interfa
ce design characteristics and thereby maintaining strict compatibility
with existing base station hardware. The proposed standard will suppo
rt a high data rate (64 kbls) both to and from the mobile device. This
paper describes the architecture, design, and performance of the Burs
t Admission based on Load and Interference (BALI) high-speed data solu
tion for CDMA. High-speed service is provided through the aggregation
of multiple codes. A new burst-mode capability is defined to allow bet
ter interference management and capacity utilization. In the burst mod
e, the number of codes that may be used by a mobile on the forward or
reverse link for the duration of a burst is controlled by the infrastr
ucture. Static allocation of multiple codes to a small number of users
can result in inefficient use of CDMA air interface capacity. Dynamic
infrastructure-controlled burst allocation makes it possible to share
the bandwidth efficiently among several high-speed packet data mobile
s.