User's Manual

U-NII Config & User Guide 5.2 Axxcelera Broadband Wireless
13.10.3 Type 3 Interference
Uplink to Access
Point interfered with by
another Access Point
Downlink. This is only an
issue if sectors using the
same frequency face each
other in the reuse pattern,
e.g., Cell 1 and Cell 3.
Otherwise it is a benign
interference type, e.g., Cell 1
and Cell 2.
Interferi
n
g
AP
Cell
3
Interference
path
Interfering AP
Cell
2
Cell
1
13.10.4 Type 4 Interference
Uplink to Access
Point interfered with by a
Subscriber Unit Uplink in
another cell. This is the worst
case of intercell interference,
as one SU, e.g., in Cell 2,
interferes with all the users
on the same frequency and
polarization in Cell 1
(whenever the SU in Cell 2 is
transmitting). As the system
has power control for SUs,
the worst case Type 4
interference will be caused
by SUs deployed at range
and at the edge of their
sector, i.e., in the Access
Point Antenna Cusp.
Interfering CT
Interference
path
Cell 2
Cell 1
March 10, 2003 Company Confidential Page 141 of 149