RET Handbook

RET Handbook

RET Handbook Index  Introduction…………………………………………………...  Introduction…………………………………………………...3 3 

Supported Supported Antennas………………………………………...4 Antennas………………………………………... 4



Connectivity………………………………………………..... Connectivity……………………………………………….....9 9

 Supporting  Supporting  OMC

Devices………………………………………...11 Devices………………………………………...11

Conf iguration iguration Steps…………………………………14 Steps…………………………………14



RET Alarm Handling……………………………………….15



Newly Tested Solutions…………………………………...16

 © The Egyptian Company Company for Mobile Services Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 2

RET Handbook 1. Introduction Remote Electrical Tilt (RET) is a feature by which the Antenna is controlled remotely through the OMC. Either internal or external Remote Control Unit (RCU) is used in order to adjust the electrical tilt of the antenna. There is a RCU for each single band with unique serial number usually used to differentiate between different bands. Usually different RCUs of one sector are connected in a daisy chain as shown in the below diagram.

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 3

RET Handbook 2. Supported Antennas

Supported Antennas

Internal RET   

JW5880100G JW5980000G P65-18-XDHH-R

External RET



PW7785 P65-18-XXCHH-N-VF



ATR4517F1



APXVERR26-C



 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 4

RET Handbook 

 JW5880100G/ JW5980000G

Ruler Cap



The latest Jaybeam antennas have internal RET motors with mechanical override.



In order to manually adjust the E-tilt value, remove the ruler cap and rotate the knob.



If the cap is removed, an alarm would appear to the OMC indicating RET functionality is disabled.



There are male and female AISG ports and connecting RET cable to any of them should work.

Configuration files

5980100_WHITE-RI 5980100_WHITE-LEF 5980100_RED-RIGH 5980100_GREEN-LEF5980100_BLUE-RIGH 5980100_BLUE-LEFT GHT-12.bin T-14.bin T-00.bin T-02.bin T-01.bin -03.bin

5980000G_WHITE-R  5980000G_WHITE-L 5980000G_RED-RIG 5980000G_GREEN-L 5980000G_BLUE-RIG 5980000G_BLUE-LEF IGHT-12.bin EFT-14.bin HT-00.bin EFT-02.bin HT-01.bin T-03.bin

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 5

RET Handbook 

P65-18-XDHH-R

Measuring Ruler Knob



The new Powerwave antenna has internal RET that consists of three replaceable internal RCUs.



The RCUs are connected to each other in a daisy chain scenario.



The RCUs are pre-commissioned and no need to download configuration files



Mechanical override is available by rotating the black knob by using a screw in order to manually adjust the E-tilt and pulling out the ruler to measure the E-tilt.



There are male and female AISG ports and connecting RET cable to any of them should work.

Configuration files

PWP65-18-XDHH-RL PWP65-18-XDHH-RH PWP65-18-XDHH-RH B-A-SBand1-red-v20. BU-A-SBand1-blue-v2BL-A-SBand1-white-v

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 6

RET Handbook 











PW7785

The Powerwave antenna (PW7785) has an external RET Motor as shown above.

The motor has three slots to fit the 3 rulers of electrical tilt.

The motor has an AISG port that controls the 3 electrical tilts (GSM, DCS, 3G) of the antenna.

The RET is not pre-commissioned and we need to run the configuration file (latest version) to operate the motor through OMC. In order to install the RET motor; the ruler lock has to removed.

Ruler Lock

PW7785.00-white-v20PW7785.00-red-v20.b PW7785.00-blue-v20. .bin

in

bin

PW7785.00R1A-B-Mul ti Band.bin

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 7

RET Handbook 

P65-18-XXCHH_N_VF The Antenna used in sharing with ET or VF uses the same motor as PW7785. Since it is a 12-Port Antenna, Each half of the antenna has a Motor to control it (The antenna is technically like 2 modules of Pw7785 antennas next to each other). nd  Module A belong to have of the Antenna, And Module B belong to the 2  Half The Configuration file need to be run after the Motor is installed to configure the used module of the antenna shared.  

 

PW7785.00-white-v20PW7785.00-red-v20.b PW7785.00-blue-v20. PW7785.00R1A-B-Mul .bin

in

bin

ti Band.bin

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 8

RET Handbook 3. Connectivity 

Di rectly to the R R U:

This scenario is used where Huawei RRU is Located near the antenna. One port of the RET cable is connected to the RRU (DB9 connector) and the other is connected to the antenna RCU. The below AISG cable type is used:



Using TMA:

This scenario is used where TMA exists on the feeders. One port of the RET cable is connected to the TMA and the other is connected to the antenna RCU. The below  AISG cable type is used:

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 9

RET Handbook 

Using B ias Tee:

This scenario is used where TMA does not exist on the feeders and for all NSN sites as the RRH has no AISG port. One port is connected to the Bias Tee and the other is connected to the antenna RCU. The Bias Tee has to be connected on the main feeder (Tx/Rx). The below AISG cable type is used:

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 10

RET Handbook 4. Supporting Devices  

Bias Tee

Bias Tee / CILOC is a Current Injector Layer One Converter.



Bias Tee is a DC blocker in one direction; in order to extract AISG signals and inject it on the AISG cable.



Smart Bias Tee is used in Mobinil network as follows:

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 11

RET Handbook 



TMA / MHA

Tower Mounted Amplifier (TMA) / Mast Head Amplifier (MHA) is a Low-noise amplifier that is placed near the antenna in order to compensate the feeder losses.



TMA can be also used in extracting DC signal and delivering it to the Antenna for RET.



TMA is connected at the feeder ends as shown in the below figure:

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 12

RET Handbook 



MDDU (for sharing)

12-port Antenna JW5980000G comes with MDCU for RET control. MDCU has Male & Female ports; each one can control all six RCUs inside the antenna.

Female AISG Port

Male AISG Port



While using this antenna for sharing, MDCU has to be replaced with MDDU. MDDU has two Male ports; each one can control only three RCUs inside the antenna.

Male AISG Ports

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 13

RET Handbook 5. OMC Configuration Steps 1. Open ALD power switch: There must be withdrawn current (40 —70 mA) in order to be able to scan the ALD. 2. Scan ALD: RCU’s serial numbers must appear if connectivity is OK. 3. Download Configuration files: for non-pre-commissioned antennas only. 4. Add RET 5. Calibrate RET: All RCUs have to be calibrated; otherwise Motor fault alarm will be raised. In order to be able to calibrate, manual E-tilt has to be adjusted to any value within the tilt range (each band has its own range depending on the supplier). 6. Modify RET: Adjust E-tilt values multiplied by 10 (tilt values= 10, 20, 30…etc)

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 14

RET Handbook 6. RET Alarm Handling 1. Faulty RET will be reported by NOC providing the antenna type. 2. The below troubleshooting will be done according to the antenna type : Powerwave a.

If ALD Maintenance link failure alarm

Jaybeam a.

exists, Replace RET cable b. If actuator is jammed, Motor has to

alarm exists, Replace RET cable b. If motor is temporarily stalled, check

be greased c.

If problem still exists, Replace motor and reconfigure the RET

If ALD Maintenance link failure

the RET caps (change it if needed) c.

If motor is permanently stalled, Replace MDCU

3. In case the problem was not solved and needs antenna replacement, Production team will replace the faulty antenna after Radio team approval.

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 15

RET Handbook 7. Newly Tested Solutions: 

Splitting Sectors:

1. Installation:  

RET motors of all sectors should be connected to their RRUs (except the splitting sector), then all these sectors have to be configured before connecting the splitting sector. Splitting sector antenna should be connected with an AISG cable to the nearest antenna as shown in the below photos.

2. Configuration:  At first only configured sectors serial no’s will appear on the OMC, then after connecting the splitting sector its serial no’s will appear as unconfigured. So it would be easily distinguished as shown below.

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 16

RET Handbook 

After configuring the splitting sector, it should be renamed to give an indication about its sector number (as shown in the below snapshot for S4 splitting). Please note that both S1 & S4 wo uld have the same subrack no. as both have their RET c onnectivity through RRU 80 (used for S1).

List RET Configuration ---------------------Control

Control

Device

Device

Port

Port

No.

Name

Cabinet

Subrack

No.

No.

Control Port Slot

RET RET Type

No.

Subunit Number

Polar

Antenna

Vendor

Type

Scenario

Code

Serial No.

0

54151G

0

80

0

SINGLE_RET

1

SINGLE

DAISY_CHAIN

JB

B-AMA111004029601

1

54151

0

80

0

SINGLE_RET

1

SINGLE

2G_EXTENSION

JB

W-AMA111004029612

2

54151C

0

80

0

SINGLE_RET

1

SINGLE

2G_EXTENSION

JB

R-AMA111004029600

7

54153G

0

82

0

SINGLE_RET

1

DUAL

DAISY_CHAIN

JB

B-AMC110922500901

8

54153

0

82

0

SINGLE_RET

1

DUAL

2G_EXTENSION

JB

R-AMC110922500900

9

54153C

0

82

0

SINGLE_RET

1

DUAL

2G_EXTENSION

JB

W-AMC110922500912

10

54154G

0

80

0

SINGLE_RET

1

DUAL

DAISY_CHAIN

JB

B-AMA111004026201

11

54154

0

80

0

SINGLE_RET

1

DUAL

2G_EXTENSION

JB

R-AMA111004026200

12

54154C

0

80

0

SINGLE_RET

1

DUAL

2G_EXTENSION

JB

W-AMA111004026212

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 17

RET Handbook Installing 8230.4 Motor on PW7755:







PW7755 is a dual-band antenna with only two rulers (one for GSM & the other for 3G) while the 8230.4 motor has three internal motors. To solve this conflict the configuration files of the 8 230.4 motor between DCS & GSM have to be swapped as shown in the above figure. After finishing the configuration, there would be an alarm on the DCS band as the ruler is missing!

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 18

RET Handbook 

Huawei Antenna (ATR4517F1)

Huawei antenna has three external motors; in order to install RET motors; Tilt caps & locks have to be removed. In order to manually adjust tilts, rotate the black knob shown in the below figure.

Knob

Ruler Lock

Each motor has a colored label indicating the ruler it should be attached to. The below figure shows how motors should be installed (Ex.: Red motor attached to Red tilt ruler). Motors should be installed by hand and without using any special tools.

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 19

RET Handbook In order to differentiate between RET motors on the OMC while doing the configuration, the below table shows the code Huawei is using for each band.

RCU S/N

Color

Band

HWPxx…r 

Red

GSM

HWPxx…bT

Blue

UMTS

HWPxx…bbB

Blue/White

DCS

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 20

RET Handbook 

RFS Antenna (APXVERR26-C)

RFS antenna has three external motors; which are factory pre-installed. In order to manually adjust tilts, RET motors have to be removed using screw driver. Beneath the RET motor there is a small nut (as shown below), 3/16” hex drive screwdrive (Allen-key) has to be used to modify tilts. Tilt reading can then be observed through the ruler even when the motor is installed.

 © The Egyptian Company for Mobile Services (Mobinil)  – 2013 ECMS. Technology. RET Handbook  – Confidential 21