Cambium PTP 670 Series, User Manual

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Chapter 3: System planning Data throughput capacity tables
Page 3-120
Data capacity in HCMP topology
Use the tables in this section to look up the TDD frame duration as a function of bandwidth,
number of Slaves and Link Symmetry. Then look up one-way capacity (Mbit/s) achieved in each
time slot of an HCMP sector as a function of frame duration and modulation mode.
The one-way capacity for a single Slave is the capacity per time slot multiplied by the number
of timeslots. The aggregate (two-way) capacity for one Slave is the sum of two one-way
capacities. The aggregate capacity for the Master is the capacity for one Slave multiplied by the
number of Slaves.
Determine the frame duration from the following tables:
Channel
Bandwidth TDD
Synchronization Frame Duration
Table Capacity
Table
20 MHz Disabled Table 129 Table 132
Enabled
40 MHz Disabled Table 130 Table 133
Enabled Table 131
Table 129 HCMP frame duration, 20 MHz Channel Bandwidth
Number of
Slaves
Link symmetry Maximum range Frame Duration
Two 1:1 5.0 km to 16.3 km 2747 μs
16.4 km to 32.6 km 2882 μs
32.7 km to 40.0 km 3012 μs
1:2 and 2:1 5.0 km to 8.1 km 4000 μs
8.2 km to 32.6 km 4184 μs
32.7 km to 40.0 km 4367 μs
1:3 and 3:1 5.0 km to 32.6 km 5495 μs
32.7 km to 40.0 km 5714 μs
Three 1:1 5.0 km to 8.1 km 4000 μs
8.2 km to 32.6 km 4184 μs
32.7 km to 40.0 km 4367 μs
1:2 and 2:1 5.0 km to 16.3 km 6024 μs
16.4 km to 40.0 km 6410 μs
Four 1:1 5.0 km to 32.6 km 5495 μs
32.7 km to 40.0 km 5714 μs