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Chapter 1: Product description
Wireless operation
Page 1-11
The TDD cycle for a simple HCMP sector with two Slave ODUs is illustrated in
. The
steps in the cycle are as follows:
1 The TDD Master transmits a burst to the first TDD Slave.
2 A delay occurs as the Master-Slave burst propagates over the link.
3 The first Slave receives the burst from the Master.
4 The first Slave processes the Master-slave burst.
5 The first Slave transmits a burst to the Master.
6 A delay occurs as the Slave-Master burst propagates over the link.
7 The Master receives the burst from the first Slave.
8 The Master transmits a burst to the second TDD Slave. A similar set of steps leads to:
9 The Master receives the burst from the second Slave.
10 The Master transmits the next burst to the first Slave.
Sectors configured for more than two Slaves necessarily have extended frame duration to
accommodate additional Master-Slave and Slave-Master transmissions.
TDD frame parameters
In the HCMP topology, the TDD burst duration is fixed.
The TDD frame duration varies depending on the following:
•
Maximum number of Slaves
•
Maximum link range.
The propagation delay in Step 2 is necessarily equal to the propagation delay in Step 6, and is
determined solely by the link range. The propagation delay for the second Slave will be
different from the delay for the first Slave unless the two Slaves are at exactly the same range.
Содержание PTP 670 Series
Страница 1: ...F Cambium PTP 670 Series User Guide System Release 670 02 50 ...
Страница 349: ...Chapter 5 Installation Installing an SFP Ethernet interface Page 5 52 Correct Incorrect ...
Страница 405: ...Chapter 6 Configuration and alignment System menu Page 6 46 Figure 151 LAN Configuration page PTP topology TDM support ...
Страница 406: ...Chapter 6 Configuration and alignment System menu Page 6 47 Figure 152 LAN Configuration page PTP topology SFP support ...
Страница 408: ...Chapter 6 Configuration and alignment System menu Page 6 49 Figure 154 LAN Configuration page HCMP topology ...
Страница 416: ...Chapter 6 Configuration and alignment System menu Page 6 57 Figure 156 QoS Configuration page IP MPLS ...
Страница 445: ...Chapter 6 Configuration and alignment Management menu Page 6 86 Figure 173 Time Configuration page SNTP enabled ...
Страница 551: ...Chapter 7 Operation System statistics Page 7 64 Figure 250 Main Port Counters page when main port is bridging traffic ...