The service planning information contains the information about all the parameters required for configuring the NE data.
Basic Information About Microwave Links
According to the spectrum allocation on the radio network and the required radio transmission capacity, you can obtain the basic information about the microwave links, as provided inTable 1.
Parameter |
Link 1 |
Link 2 |
Link 3 |
Link 4 |
|---|---|---|---|---|
Link ID |
101 |
102 |
103 |
104 |
Tx high site |
NE11 |
NE14 |
NE15 |
NE15 |
Tx low site |
NE12 |
NE13 |
NE13 |
NE16 |
Tx frequency at the Tx high site (MHz) |
14930 |
14952 |
14967 |
14930 |
Tx frequency at the Tx low site (MHz) |
14510 |
14532 |
14547 |
14510 |
T/R spacing (MHz) |
420 |
420 |
420 |
420 |
Radio working mode |
STM-1, 28MHz, 128QAM |
16E1, 14MHz, 16QAM |
22E1, 14MHz, 32QAM |
8E1, 7MHz, 16QAM |
RF configuration mode |
1+1 HSB |
1+1 HSB |
1+1 HSB |
1+0 |
Polarization Direction |
V (vertical polarization) |
H (horizontal polarization) |
V (vertical polarization) |
H (horizontal polarization) |
NOTE: - To prevent interference on a microwave site, it is recommended that you plan the microwave site as only a TX high site or a TX low site at a time.
- To prevent interference between two microwave links on a microwave site that use transmit frequencies with a small spacing between, it is recommended that you set the two microwave links to operate in different polarization directions.
- The planning information that is not related to the configuration of the IDU (except for the polarization direction) is not provided in this example.
Power and ATPC Information
By using the radio network planning software such as the Pathloss, you can analyze and compute the availability of services and parameters of microwave links. Then, you can obtain the power and ATPC information of the microwave links as provided in Table 2.
Parameter |
Link 1 |
Link 2 |
Link 3 |
Link 4 |
|---|---|---|---|---|
Transmit power (dBm) |
5(NE11) 5(NE12) |
10(NE13) 10(NE14) |
5(NE11) 5(NE12) |
5(NE11) 5(NE12) |
Receive power (dBm) |
-42(NE11) -42(NE12) |
-44(NE13) -44(NE14) |
-43(NE13) -43(NE15) |
-48(NE15) -48(NE16) |
ATPC enabling |
Enabled |
Enabled |
Enabled |
Enabled |
ATPC automatic threshold enabling |
Disabled |
Disabled |
Disabled |
Disabled |
Upper threshold of ATPC adjustment (dBm) |
-32(NE11) -32(NE12) |
-34(NE13) -34(NE14) |
-33(NE13) -33(NE15) |
-38(NE15) -38(NE16) |
Lower threshold of ATPC adjustment (dBm) |
-52(NE11) -52(NE12) |
-54(NE13) -54(NE14) |
-53(NE13) -53(NE15) |
-58(NE15) -58(NE16) |
Maximum transmit power (dBm) |
- |
- |
- |
- |
NOTE: - In this example, the ATPC is enabled to reduce the inter-site interference. The ATPC may be disabled if there is no such a requirement.
- The ATPC controls the receive power within a range, namely, (2 dB more or less than the central value between the upper threshold and lower threshold of ATPC adjustment). Hence, this example sets the upper threshold to 10 dB higher than the receive power, and the lower threshold is 10 dB lower than the receive power.
- The maximum transmit power is the actual maximum transmit power of the ODU after the ATPC is enabled. When this parameter is not specified, the value of the parameter is the rated maximum transmit power of the ODU. If the ODU works at the rated maximum transmit power, the electromagnetic wave agrees with the spectrum configuration profile. Hence, this parameter is not set generally.
Information of IF Boards
According to the radio type, slot priorities of IF boards, and configuration rules of the 1+1 protection, you can obtain the information of IF boards as provided inTable 3.
Parameter |
Link 1 |
Link 2 |
Link 3 |
Link 4 |
|---|---|---|---|---|
Main IF board |
3-IF1(NE11) 3-IF1(NE12) |
3-IF1(NE13) 3-IF1(NE14) |
4-IF1(NE13) 4-IF1(NE15) |
3-IF1(NE15) 3-IF1(NE16) |
Standby IF board |
5-IF1(NE11) 5-IF1(NE12) |
5-IF1(NE13) 5-IF1(NE14) |
6-IF1(NE13) 6-IF1(NE15) |
- |
RF configuration mode |
1+1 HSB |
1+1 HSB |
1+1 HSB |
1+0 |
Revertive mode |
Revertive (default value) |
Revertive (default value) |
Revertive (default value) |
- |
WTR time(s) |
600 (default value) |
600 (default value) |
600 (default value) |
- |
Reverse switching enabling |
Disabled |
Disabled |
Disabled |
- |
NOTE: - it is recommended that you configure the main IF board in the slot with the smaller slot number.
- In 1+1 HSB configuration, it is recommended that you disable the reverse switching function. In 1+1 SD configuration, it is recommended that you enable the reverse switching function.
- Unless otherwise specified the other parameters of the 1+1 HSB/FD/SD all take default values.