User's Manual

Lucent Technologies — Proprietary
See notice on first page
21-16
401-660-100 Issue 11 August 2000
CDMA Maintenance
The RCC uses the CRTU to perform CDMA functional tests on every antenna face
(omni, alpha, beta, gamma, delta, epsilon, zeta) of a CDMA cell. The CRTU must
be in the active state to perform the tests.
There are two types of CDMA functional tests: overhead channel functional tests
and traffic path functional tests. Testing is limited to one CDMA carrier per
antenna face with the following exception: for CDMA Series II Cell Sites, CDMA
traffic path testing of multiple CDMA carriers is supported.
NOTE:
Multiple CDMA carriers on an omni cell or cell sector consist of one or two
common CDMA carriers and one or more optional non-common CDMA
carriers. For the cellular band class (850 MHz), the TIA IS-95 standard
defines two common carriers: the primary CDMA carrier, which is centered
on RF channel 283 for System A (A band) and 384 for System B (B band),
and the secondary CDMA carrier, which is centered on RF channel 691 for
System A (A’ band) and 777 for System B (B’ band). Each CDMA omni cell
or cell sector must be assigned at least one common carrier. Non-common
CDMA carriers are chosen by the system operator within certain limits
defined in the IS-95 standard. The 1.23-MHz bandwidth for a CDMA carrier
suggests that the minimum center frequency separation between center
frequencies is 1.23 MHz.
NOTE:
For the PCS band class (1900 MHz), candidates for common CDMA
carriers range from channel numbers 25 to 1175 in increments of 25.
NOTE:
A common CDMA carrier has its own unique pilot channel, sync channel,
paging channel, access channel, and traffic channels. A non-common
CDMA carrier has its own unique pilot channel and traffic channels but no
sync, paging, or access channels. In CDMA Release 3.0, there is one
paging channel per common carrier per antenna face, known as the
primary paging channel, which is covered (spread) using Walsh code
function number 1.
Each common CDMA carrier (primary, secondary) on an antenna face has one
channel element (CE) configured as the pilot/sync/access overhead channel,
known as the P/S/A CE, and another configured as the paging overhead channel,
known as the page CE. The two CEs may be on the same CDMA channel unit
(CCU) or on different CCUs within the same CDMA cluster.
The overhead channel and traffic path functional tests verify the operation of the
following Cell Site equipment: RF transmit paths, RF receive paths, and CDMA
radio equipment.