Cambium PTP 670 Series, Руководство пользователя

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Chapter 1: Product description Wireless operation
Page 1-14
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2:1 – The capacity in the direction Master to Slave is twice that of the direction Slave to
Master. The PTP 670 series achieves this by setting the Burst Duration of the Master to
twice that of the Slave.
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1:2 – The capacity in the direction Slave to Master is twice that of the direction Master to
Slave. The PTP 670 series achieves this by setting the Burst Duration of the Slave to twice
that of the Master.
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1:3 – The capacity in the direction Slave to Master is three times that of the direction Master
to Slave. The PTP 670 series achieves this by setting the Burst Duration of the Slave to
three times that of the Master.
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1:5 – The capacity in the direction Slave to Master is five times that of the direction Master
to Slave. The PTP 670 series achieves this by setting the Burst Duration of the Slave to five
times that of the Master.
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Adaptive – The capacity allocated to a given link direction is dependent on the offered level
of network traffic in both link directions. If the level of offered traffic in both directions is
equally high or equally low, the PTP 670 will allocate equal capacity to both directions. If
however the offered level of traffic is greater in one direction, it is allocated a greater
proportion of the overall link capacity. The PTP 670 series achieves this by increasing (or
decreasing) the duration of the Transmit Burst in a given link direction as the offered level
of network traffic increases (or decreases) in this same direction. This is done
independently for the two directions.
Note
The 5:1, 3:1, 2:1, 1:2, 1:3 and 1:5 modes are not available when TDD synchronization is
enabled, or when TDM services are enabled.
Note
Adaptive mode is not available in the following configurations:
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When link mode optimization is set to TDM Traffic (see Link mode optimization on
page 1-12 .
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When TDD synchronization is enabled.
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In regions where radar avoidance is operational (see Radar avoidance on page 1-19 ).
HCMP topology
The PTP 670 series provides seven configuration options for apportioning the available
capacity between the two link directions.
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4:1 – The capacity in the downlink (Master to Slave) direction is four times that of the uplink
(Slave to Master) direction.
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3:1 – The capacity in the downlink direction is three times that of the uplink direction.
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2:1 – The capacity in the downlink direction is twice the uplink direction.
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1:1 – Uplink and downlink capacity is equal.
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1:2 – The capacity in the uplink direction is twice the downlink direction.
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1:3 – The capacity in the uplink direction is three times that of the downlink direction.
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1:4 – The capacity in the uplink direction is four times that of the downlink direction.