A15.1.1 Cellular network

When an item is selected in the main plot area its details are shown in the details table on the right handside of the “cellular structure” tab. The values shown depend on the type of element. When no element is selected the system itself is considered to be selected and the table is as shown in Figure 439.

Figure 439: Downlink system details – see Table 74

Table 74: Downlink system details

Name	Description
Link direction	Link direction of the CDMA network
Frequency	Carrier frequency of the CDMA network
Bandwidth	Bandwidth of the system
Cell Radius	The cell radius of the CDMA network is based on 3GPP2 and is equivalent to R in the graphic below.
Bitrate	Bit rate of the system. It is used to calculate the system processing gain
Link Level Data	Used to map the link level simulation (bit level) to the system level simulation (SIR level)
Total non interfered capacity	Same value as shown in the Snapshot summary.
Non interfered capacity per cell	Number of active UEs when the CDMA network is balanced. Note: This is the result of the optimal capacity finding simulation – and the value to extract and input to reuse the result.
Number of trials during capacity test	The number of trials input parameter
Obtained success rate	The result of optimal capacity finding for the capacity used. This can be different than the target (0.8 for downlink and target noise rise for uplink) if the algorithm has detected narrow oscillation (back and forth between the same values). Please refer to the CDMA specification for more details on this algorithm.
Number of ignored users (due to LLD)	Link level values are extrapolated from the values input and there is a build in hard coded stop if a UE is requiring more than half of received signal to be the wanted signal. Any UEs requiring more than this limit is automatically dropped. This number counts the number of UEs in this snapshot dropped due to this limit.
Total dropped users	Total number of dropped UEs (both due internal and external interference)
Users dropped before interference	Number of UEs dropped by power balance before the introduction of external interference. Along with the total number of dropped UEs this gives insight into the impact of external interference compared to the internal interference.
Number of ignored users (due to LLD)	Duplicate – will be removed.
Propagation model	The name of the selected propagation model for the system.
Maximum traffic channel proportion	This is the maximum transmit power for a single traffic channel (UE) – deducted from the maximum transmit power for the base stations and the specified maximum traffic channel fraction.
Noise floor	Calculated value of the Noise Floor
Percentage of active users in soft-handover	Linear percentage of voice active UEs who are in soft-handover. This is very dependent on the selected propagation model.
Percentage of dropped users in soft-handover	Linear percentage of dropped UEs in soft-handover.