Specifications

Neighbor Cell List
Handover
August 08, 2000 68P81095E55-E D-7
Neighbor Cell List
The Neighbor Cell List is specific to each cell (sector or omni). The neighbor list is
a set of logical numbers assigned to other cells that indicate potential handover
candidates. The list identifies cells that are adjacent or close enough to take over
control of the voice and data communication between the MS and the EBTS as the
mobile moves around the network (Figure D-3). The MS uses the broadcast channel
to scan the Neighbor Cell List and uses the radio link quality to select a “new” host
cell. This is based on radio link quality (SQE and RSSI), and operator (software) set
parameters. This assures the best possible radio link quality on a real-time basis.
Figure D-3 Logical Neighbor Cell Listings
Handover Measurements
The measurements use to determine radio link quality are listed in Table D-2 and
Figure D-4
Table D-2 Handover Measurements
0
1
2
3
4
9
7
6
5
8
Neighbor List
Active (host) cell = 0
Good Candidates are:
Cell 1
Cell 2
Cell 6
Cell 7
Possible Candidates are:
Cell 3
Cell 4
Cell 5
Cell 8
Cell 9
T. N. French
Host Cells Neighbor Cells Idle Servers
Mobile Station Signal Quality Estimate
(SQE)
[C/(I + N)]
Color Code
Received Signal Strength
Indication (RSSI)
SQE [C/(I + N)]
Color Code
RSSI
Base
Transceiver
SQE [C/(I + N)]
Color Code
RSSI
Interference + Noise
(I + N)