41
4 Product
Architecture
The PTP 600 Series Bridge consists of an identical pair of units deployed one at each end of
the link. The radio link operates on a single frequency channel in each direction using Time
Division Duplex (TDD). One unit is deployed as a master and the other as a slave. The
master unit takes responsibility for controlling the link in both directions.
The non-line-of-sight (NLOS) aspects of the product are provided by Multiple-Input Multiple-
Output (MIMO), coupled with Orthogonal Frequency Division Multiplexing (OFDM)
modulation.
The PTP 600 Series Bridge has been developed to operate within license exempt frequency
bands as well as the licensed 2.5GHz band in the USA.
The current product range supports:
•
USA BRS-EBS Post-Transition Band 2.5 GHz (2496 – 2690 GHz)
•
ETSI 5.4 GHz band B (5.470-5.725 GHz)
•
ETSI 5.8 GHz band C (5.725–5.850 GHz) and the USA 5 GHz ISM band
(5.725-5.850 GHz)
The PTP 600 Series Bridge has been designed to coexist with other users of the band in an
optimal fashion using a combination of Transmit Power Control (TPC), Spectrum
Management functionality and Antenna beam shape.
In order to maintain link availability, the product employs adaptive modulation techniques that
dynamically reduce the data rate in severe or adverse conditions. To the data network the
PTP 600 Series Bridge is implemented as a learning bridge. A learning bridge builds up a
picture of which addresses are connected to which port. This means that it will not bridge a
packet if it knows that the destination address is connected to the same port on which the
bridge saw the packet.
986H
Figure 12 illustrates the PTP 600 Series Bridge layer diagram.
Summary of Contents for MOTOWI 4 PTP 600 Series
Page 1: ...PTP 600 Series User Guide MOTOROLA POINT TO POINT WIRELESS SOLUTIONS ...
Page 2: ......
Page 24: ...22 List of Equations 462HEquation 1 Path Loss 955H63 463HEquation 2 Link Loss 956H91 ...
Page 113: ...111 8 3 3 Detailed Counters Page Figure 53 Detailed Counters Page ...
Page 221: ...219 Figure 136 Disarm Following TDD Synchronization ...
Page 227: ...225 Figure 142 Diagrammatically Showing the E1 T1 Connections ...
Page 228: ...226 Figure 143 Two E1 T1 120 Ohms signal Balanced to PTP600 Interface ...
Page 230: ...228 Figure 144 Typical Mast Installation with the addition of the E1 T1 cable ...
Page 233: ...231 Figure 146 Surge Arrestor ALPU ORT Connection Illustration ...
Page 237: ...235 Figure 149 QPSK 0 63 Single Payload Figure 150 QPSK 0 87 Single Payload ...
Page 238: ...236 Figure 151 16 QAM 0 63 Single Payload Figure 152 16 QAM 0 87 Single Payload ...
Page 239: ...237 Figure 153 64 QAM 0 75 Single Payload Figure 154 64 QAM 0 92 Single Payload ...
Page 240: ...238 Figure 155 256 QAM 0 81 Single Payload Figure 156 16 QAM 0 63 Dual Payload ...
Page 241: ...239 Figure 157 16 QAM 0 87 Dual Payload Figure 158 64 QAM 0 75 Dual Payload ...
Page 242: ...240 Figure 159 64 QAM 0 92 Dual Payload Figure 160 256 QAM 0 81 Dual Payload ...
