Antenna System

Antenna System SRAN5.0

Feature Parameter Description

Issue 01

Date 2010-10-15

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved.

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SingleRAN

Antenna System Contents

Issue 01 (2010-10-15) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd

ii

Contents

1 Introduction ................................................................................................................................ 1-1

1.1 Scope ............................................................................................................................................ 1-1

1.2 Intended Audience ........................................................................................................................ 1-1

1.3 Change History .............................................................................................................................. 1-1

2 Connection with TMA .............................................................................................................. 2-1

2.1 Overview of Connection with TMA ................................................................................................ 2-1

2.2 RF Receiver Channel Attenuation ................................................................................................. 2-2

2.3 Power Supply for TMA .................................................................................................................. 2-2

2.4 Monitor TMA .................................................................................................................................. 2-2

3 Remote Electrical Tilt ............................................................................................................... 3-1

3.1 Overview of Remote Electrical Tilt ................................................................................................ 3-1

3.2 Operating Principles of RET .......................................................................................................... 3-1

3.3 Operating Principles of Huawei RET ............................................................................................. 3-2

4 2-Way Antenna Receive Diversity ........................................................................................ 4-1

5 Parameters ................................................................................................................................. 5-1

5.1 Parameters of Connection With TMA ............................................................................................ 5-1

5.2 Parameters of Remote Rlectrical Tilt........................................................................................... 5-15

6 Counters ...................................................................................................................................... 6-1

7 Glossary ...................................................................................................................................... 7-1

8 Reference Documents ............................................................................................................. 8-1

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Antenna System 1 Introduction



1-1

1 Introduction

1.1 Scope

This document describes the antenna system feature of Huawei SingleRAN system. It covers the sub-features connection with Tower Mounted Amplifier (TMA), remote electrical tilt, and 2-way antenna receive diversity.

1.2 Intended Audience

This document is intended for:

Personnel who are familiar with GSM and WCDMA basics

Personnel who need to understand antenna system

Personnel who work with Huawei products

1.3 Change History

This section provides information on the changes in different document versions.

There are two types of changes, which are defined as follows:

Feature change: refers to changes in the antenna system feature of a specific product version.

Editorial change: refers to changes in wording or the addition of the information that was not described in the earlier version.

Document Issues

The document issues are as follows:

01 (2010-10-15)

Draft (2010-05-15)

01 (2010-10-15)

This is the document for the first commercial release of SRAN5.0.

Compared with issue Draft (2010-05-15) of SRAN5.0, this issue optimizes the description.

Draft (2010-05-15)

This is the draft of the document for SRAN5.0.

This is a new document.

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Antenna System 2 Connection with TMA



2-1

2 Connection with TMA

This section describes the RF RX channel attenuation configuration, power supply configuration, and working status monitoring configuration of the Tower Mounted Amplifier (TMA).

The connection with TMA function corresponds to the feature MRFD-210601 Connection with TMA (Tower Mounted Amplifier).

2.1 Overview of Connection with TMA

Installed on the tower top, a TMA is a device for amplifying uplink signals. As an optional component of the antenna system, the TMA compensates for the feeder loss caused by a long feeder to improve the uplink sensitivity and converge. In SRAN5.0, both NodeBs and BTSs support TMA and smart TMA (STMA). An STMA has a built-in Smart Bias Tee (SBT) in comparison to a TMA. The power supply switch and attenuation factor need to be set for both TMA and STMA.

In a network whose uplink coverage is limited, the TMA can be installed to improve the RX sensitivity and expand the cell radius, thus reducing the number of BTSs and minimizing investments. Users need to determine whether to install the TMA according to the actual project requirements.

BTSs power and control the TMA. Huawei BTS provides the TMA with 10 - 13 V output voltage. When a major alarm related to the TMA is reported, the BTS automatically sets the attenuation value of the RX channel to 0. After the alarm is cleared, the BTS automatically restores the attenuation value of the RX channel to the configured value.

The RET control signals, power supply, and RF signals of the TMA are transmitted through the feeder. This facilitates operation and maintenance. The SBT powers the TMA through the feeder and provides the RCU with control signals.

Huawei BTS also supports dual-TMA. Dual-TMA indicates that each TMA contains two pairs of RX/TX branches. Each sector needs to be configured with only one TMA. Each TMA also contains a low noise amplifier (LNA) for monitoring alarms.

The functions of the two pairs of RX/TX branches of a TMA are the same. The RX channel has two RX filters and one LNA. When the input DC is faulty, the LNA is automatically ignored. The Bias Tee is configured on the BTS side of the TMA. The Bias Tee of a smart TMA (STMA) is referred to as an SBT. The Bias Tee can distinguish the combined signals of RF signals and DC signals, power the LNA, and provide the RCU with RET control signals. The TX channel contains a TX filter, as shown in Figure 2-1.

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Figure 2-1 Working principle of the TMA

.

2.2 RF Receiver Channel Attenuation

The TMA can improve both the uplink RX gain and the RX sensitivity. When the BTS measures the uplink RX level, the measurement result must reflect the actual radio environment. Therefore, the TMA gain must be compensated reversely on the RF RX channel to ensure that the RX quality is improved and the RX level reflects the actual radio environment when the BTS measures the uplink RX level.

When the TMA is configured, users need to set the RF RX channel attenuation of the RF antenna interface and the RX channel corresponding to the TRX to obtain the TMA gain according to the actual requirement.

For the BTS, you can run the MML command SET BTSRXUBP to specify whether the TMA is installed on the antenna system, and set the attenuation factor for the TMA.

For the NodeB, you can run the MML command ADD ALD to add the TMA for the antenna line device (ALD), run the MML command SET TMAMODE to set the work mode of the TMA, run the MML command SET TMAGAIN to set the gain of the TMA, and run the MML command SET RXATTEN to set the attenuation of the RX channel.

2.3 Power Supply for TMA

The TMA needs to be powered by the BTS/NodeB through the RF feeder:

For the BTS, RXU board types such as the RRU3008, RRU3908, GRFU, and MRFU can directly provide power for the TMA. The DRFU, however, does not directly provide power for the TMA. Instead, it needs to be installed with a GATM board to provide power for the TMA. You can run the MML command SET BTSRXUBP/SET BTSDATUBP to enable the power switch.

For the NodeB, the RF module provides power for the TMA. You can run the MML command SET ALDPWRSW to enable the power switch.

2.4 Monitor TMA

The working status of the TMA can be determined according to the status of the feeding current on the TMA. The methods of reflecting the working status of the TMA through the feeding current vary

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according to TMAs. Users need to configure feeder boards for TMAs according to the actual TMA feature configuration.

There are three alarm modes: MODE1 has only one type of alarm whose alarm severity is critical, and the alarm current threshold is fixed and greater than the normal working current; MODE2 has two types of alarms whose alarm severities are critical and warning, and the alarm current is fixed and greater than the normal working current; MODE 3 has two types of alarms whose alarm severities are critical and warning, and the warning alarm current is periodical pulse current, while the critical alarm current is fixed.

Figure 2-2 Power supply current chart corresponding to MODE1


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When the power switch is set to ON, you need to set the current alarm threshold:

For the BTS, you can run the MML command SET BTSRXUBP/SET BTSDATUBP to set the current alarm threshold.

For the NodeB, you can run the MML command SET ALDPWRSW to set the current alarm threshold.

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Antenna System 3 Remote Electrical Tilt



3-1

3 Remote Electrical Tilt

This section describes a solution for remote adjustment of the antenna tilt.

The remote electrical tilt (RET) function corresponds to the feature MRFD-210602 Remote Electrical Tilt.

3.1 Overview of Remote Electrical Tilt

The RET refers to an antenna system whose tilt is controlled electrically. After an antenna is installed, the tilt of the antenna needs to be adjusted for the purpose of network optimization. With the RET feature, the phases of signals that reach the elements of the array antenna can be adjusted through electrical control, so as to change the vertical pattern of the antenna.

The tilt of the RET antenna can be adjusted after the system is powered on and be monitored in real time. In this way, precise adjustment of the antenna tilt can be achieved.

The RET feature provides the following benefits:

The RET antennas at more than one site can be remotely adjusted at the same time. Therefore, the efficiency of adjusting the antenna tilt is improved and the cost of network optimization is reduced.

The adjustment of RET antennas can be performed irrespective of weather conditions.

It is easy to adjust the RET antennas at the sites that are difficult to reach.

The operating principles of RET are described in this chapter.

3.2 Operating Principles of RET

The tilt of the RET antenna can be adjusted remotely.

The phase shifter of the antenna can be controlled by the stepper motor outside or inside the antenna. You can adjust the antenna tilt after the system is powered on and monitor the tilt in real time. Therefore, the precise remote adjustment of the antenna tilt can be achieved.

Figure 3-1 shows the operating principles of the RET antenna.

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Figure 3-1 Operating principles of the RET antenna

RCU

Phase shifter

Pulling bar

Radome

Control cable

(DC+ control signals)

The Remote Control Unit (RCU) is the driving motor of the phase shifter of the RET antenna. The RCU receives and executes the control commands from the MBTS to drive the stepper motor. A pulling bar connects the stepper motor and the phase shifter. When the stepper motor is triggered, the pulling bar moves and then the phase of the phase shifter changes through the gears. In this situation, the phase of each element of the array antenna changes regularly. Then, the direction of the main beam of the antenna changes accordingly. Thus, the antenna tilt is adjusted.

3.3 Operating Principles of Huawei RET

Huawei MBTS supports the following types of RET antenna connection:

Directly connect the RET through multicore cables: It is applicable when the distance between the RRU and the RCU is shorter than 20 meters.

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Figure 3-2 DBS Station connect the RET Antenna directly

Connect the RET via SBT: It is applicable when the distance between the RRU and the RCU is longer than 20 meters and the TMA is not used in the system.

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Figure 3-3 DBS Station connect the RET Antenna via SBT

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Figure 3-4 BTS Station connect the RET Antenna via SBT

Connect the RET together with the STMA: It is applicable when the distance between the RRU and the RCU is longer than 20 meters and the TMA is required by the system.

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Figure 3-5 DBS Station connect the RET Antenna together with STMA

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Figure 3-6 BTS Station connect the RET Antenna together with STMA

The MBTS supplies the DC power to the stepper motor and communicates with it through the AISG interface on the motor.

In the Huawei RET solution, the RET antenna can be controlled remotely or locally through a command sent from the M2000 or LMT respectively.

When directly connect the RET through multicore cables, the process of RET antenna control is as follows:

1. The M2000 or LMT issues the control command to the BBU, and then the BBU sends the command to the RRU.

2. The RRU modulates the control command into RS485 signals and then transmits the signals from the RS485 port to the RCU through the control cable.

When connect the RET via the SBT, the process of RET antenna control is as follows:


2. The RRU modulates the control command into On-Off-Keying (OOK) signals and then transmits the signals and the DC power from the RF port to the SBT.

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3. The SBT demodulates the OOK signals into RS485 signals and then transmits the signals and part of the DC power to the RCU.

When conect the RET together with STMA, the process of RET antenna control is as follows:


2. The RRU modulates the control command into OOK signals and then transmits the signals and the DC power from the RF port to the STMA.

3. The STMA demodulates the OOK signals into RS485 signals and then transmits the signals and part of the DC power to the RCU.

The Huawei RET solution supports the RET cascading control. Several cascaded RET antennas can be controlled by the signals coming from the same control cable. The cascading solution helps save the cost of the SBTs.

The Huawei RET solution also supports the 2G/3G RET cascading control. 3G RET antennas can be cascaded with 2G RET antennas. When they are cascaded, the tilts of the 2G RET antennas can be controlled on the OMC for 3G, and the tilts of the 3G RET antennas can also be controlled on the OMC for 2G. The cascading helps save the cost of SBTs and STMAs when the 2G and 3G RET antennas are installed at the same place.

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3G/2G NodeB 2G/3G BTS

RC

U

SBT

Dual-band Antenna

RC

U 2G 3G

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Antenna System 4 2-Way Antenna Receive Diversity



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4 2-Way Antenna Receive Diversity

The 2-way antenna receive diversity function corresponds to the feature MRFD-210604 2-Way Antenna Receive Diversity.

With this feature, the same signal is received by two antennas. Then, the two ways of signals on the two antennas are combined after being processed. In this manner, the signal attenuation is reduced.

This feature is a technique for improving the receive sensitivity and uplink coverage, thus reducing the CAPEX.

For details, see TX Diversity and RX Diversity Feature Parameter Description of the RAN, and 2-Antenna Receive Diversity Feature Parameter Description of the GBSS.

2-Antenna%20Receive%20Diversity.htm

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Antenna System 5 Parameters



5-1

5 Parameters

5.1 Parameters of Connection With TMA

Table 5-1 Parameter description for GSM RXU board

Parameter ID NE MML Description

HAVETT1 BSC6900 SET BTSRXUBP(Optional)

Meaning: Whether the tower-top amplifier is installed on antenna tributary 1. GUI Value Range: NO(NO), YES(YES) Actual Value Range: NO, YES Unit: None Default Value: NO

ATTENFACTOR1 BSC6900 SET BTSRXUBP(Optional)

Meaning: TMA attenuation factor of antenna tributary 1 GUI Value Range: 0~15 Actual Value Range: 0~15 Unit: dB Default Value: 0

HAVETT2 BSC6900 SET BTSRXUBP(Optional)

Meaning: Whether the tower-top amplifier is installed on antenna tributary 2. GUI Value Range: NO(NO), YES(YES) Actual Value Range: NO, YES Unit: None Default Value: NO

ATTENFACTOR2 BSC6900 SET BTSRXUBP(Optional)

Meaning: TMA attenuation factor of antenna tributary 2 GUI Value Range: 0~15 Actual Value Range: 0~15 Unit: dB Default Value: 0

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PwrSwitchA BSC6900 SET BTSRXUBP(Optional)

Meaning: When ANT_A ALD Power Switch is set to ON, the current alarm threshold of the port to which the antenna is connected needs to be set. The ALD system type varies according to the ALD type and connection mode. Therefore, an ALD system type needs to be selected to determine the default value of the current alarm threshold.5Except UER_SELF_DEFINE1 and UER_SELF_DEFINE2, other values of ANT_A ALD Current Alarm Threshold Type indicate one severity level. The alarm current is fixed and greater than the current required for normal operation. UER_SELF_DEFINE2 indicates two alarm severity levels: warning alarms and major alarms. The alarm current is fixed and greater than the current required for normal operation. UER_SELF_DEFINE3 indicates two alarm severity levels: warning alarms and major alarms. The warning alarm current is periodical pulse current, while the major alarm current is fixed. GUI Value Range: OFF(OFF), ON(ON) Actual Value Range: OFF, ON Unit: None Default Value: OFF

ChkModA BSC6900 SET BTSRXUBP(Optional)

Meaning: Alarm mode of the ANT_A tributary of an RXU board. There are three alarm modes. Alarm mode 1 has only one type of alarms. The alarm current is fixed and greater than the normal working current. Alarm mode 2 has two types of alarms: warning alarms and critical alarms. The alarm current is fixed and greater than the normal working current. Alarm mode 3 has two types of alarms: warning alarms and critical alarms. The warning alarm current is periodical pulse current, while the critical alarm current is fixed. When the parameter is set to 1, "ANT_A ALD Current Minor Alarm Occur Th", "ANT_A ALD Current Minor Alarm Clear Th", "A ALD Cur-Minor Alarm Over-Cur Duration", and "A ALD Cur-Minor Alarm N-Cur Duration" cannot be configured. When the parameter is set to 2, "A ALD Cur-Minor Alarm Over-Cur Duration", and "A ALD Cur-Minor Alarm N-Cur Duration" cannot be configured. When the parameter is set to 3, "ANT_A ALD Current Minor Alarm Occur Th", and "ANT_A ALD Current Minor Alarm Clear Th" cannot be configured. GUI Value Range: UER_SELF_DEFINE1(User Self Defined Type 1), UER_SELF_DEFINE2(User Self Defined Type 2), UER_SELF_DEFINE3(User Self

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Defined Type 3), TMA12DB_ONLY_NON_AISG(For 12 dB non-AISG TMA), TMA24DB_ONLY_NON_AISG(For 24 dB non-AISG TMA), RET_ONLY_COAXIAL(For RET only (coaxial)), TMA12DB_AISG(For 12 dB TMA and RET or 12 dB TMA (AISG)), TMA24DB_AISG(For 24 dB TMA and RET or 24 dB TMA (AISG)) Actual Value Range: UER_SELF_DEFINE1, TMA12DB_ONLY_NON_AISG, TMA24DB_ONLY_NON_AISG, RET_ONLY_COAXIAL, TMA12DB_AISG, TMA24DB_AISG, UER_SELF_DEFINE2, UER_SELF_DEFINE3 Unit: None Default Value: UER_SELF_DEFINE1

OverCurAlmThdA BSC6900 SET BTSRXUBP(Optional)

Meaning: Abnormally alarm raise threshold triggered by too heavy current of the ANT_A tributary antenna. When the actual current is higher than the configured value, the ALD Current Abnormally Alarm is triggered with the corresponding alarm tributary No. of 0. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 320

OverCurClrThdA BSC6900 SET BTSRXUBP(Optional)

Meaning: Clearance threshold for the alarm triggered when the ANT_A tributary antenna is over current. When the actual current is below this threshold, the ALD Current Abnormal Alarm is cleared. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 280

UnderCurAlmThdA BSC6900 SET BTSRXUBP(Optional)

Meaning: Abnormally alarm triggering threshold when the ANT_A tributary antenna current is too light. When the actual current is lower than the configured value, the ALD Current Abnormally Alarm is triggered with the corresponding alarm tributary No. of 1. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 40

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UnderCurClrThdA BSC6900 SET BTSRXUBP(Optional)

Meaning: Abnormally alarm clearance triggering threshold when the ANT_A tributary antenna current is too light. When the actual current is higher than the configured value, the ALD Current Abnormally Alarm disappears with the corresponding alarm tributary No. of 1. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 60

MinorAlmThdA BSC6900 SET BTSRXUBP(Optional)

Meaning: Threshold for triggering prompt alarm clearance when the ANT_A tributary antenna current is too heavy. When the actual current is higher than the configured value, the ALD Current Prompt Alarm clearance is triggered. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 170

MinorClrThdA BSC6900 SET BTSRXUBP(Optional)

Meaning: Threshold for triggering prompt alarm clearance when the ANT_A tributary antenna current is too heavy. When the actual current is lower than the configured value, the ALD Current Prompt Alarm clearance is triggered. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 140

OverCurDurA BSC6900 SET BTSRXUBP(Optional)

Meaning: When the ANT_A tributary antenna current abnormally check mode is set to UER_SELF_DEFINE3, the parameter ALD Current Prompt Alarm is checked by periodical pulse. The periodical pulse consists of antenna over-current duration and normal current duration. This parameter is the ANT_A tributary antenna over-current duration. GUI Value Range: 100~10000 Actual Value Range: 100~10000 Unit: ms Default Value: 1500

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NormalCurDurA BSC6900 SET BTSRXUBP(Optional)

Meaning: When the ANT_A tributary antenna current abnormally check mode is set to UER_SELF_DEFINE3, the parameter ALD Current Prompt Alarm is checked by periodical pulse. The periodical pulse consists of antenna over-current duration and normal current duration. This parameter is the ANT_A tributary antenna normal current duration. GUI Value Range: 100~10000 Actual Value Range: 100~10000 Unit: ms Default Value: 2500

PwrSwitchB BSC6900 SET BTSRXUBP(Optional)

Meaning: When ANT_B ALD Power Switch is set to ON, the current alarm threshold of the port to which the antenna is connected needs to be set. The ALD system type varies according to the ALD type and connection mode. Therefore, an ALD type needs to be selected to determine the current alarm threshold. Except UER_SELF_DEFINE1 and UER_SELF_DEFINE2, other values of ANT_A ALD Current Alarm Threshold Type indicate one severity level. The alarm current is fixed and greater than the current required for normal working. UER_SELF_DEFINE2 indicates two alarm severity levels: warning alarms and major alarms. The alarm current is fixed and greater than the current required for normal working. UER_SELF_DEFINE3 indicates two alarm severity levels: warning alarms and major alarms. The warning alarm current is periodical pulse current, while the major alarm current is fixed. GUI Value Range: OFF(OFF), ON(ON) Actual Value Range: OFF, ON Unit: None Default Value: OFF

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ChkModB BSC6900 SET BTSRXUBP(Optional)

Meaning: Alarm mode of the ANT_B tributary of an RXU board. There are three alarm modes. Alarm mode 1 has only one type of alarms. The alarm current is fixed and greater than the normal working current. Alarm mode 2 has two types of alarms: warning alarms and critical alarms. The alarm current is fixed and greater than the normal working current. Alarm mode 3 has two types of alarms: warning alarms and critical alarms. The warning alarm current is periodical pulse current, while the critical alarm current is fixed. When the parameter is set to 1, "ANT_B ALD Current Minor Alarm Occur Th", "ANT_B ALD Current Minor Alarm Clear Th", "B ALD Cur-Minor Alarm Over-Cur Duration", and "B ALD Cur-Minor Alarm N-Cur Duration" cannot be configured. When the parameter is set to 2, "B ALD Cur-Minor Alarm Over-Cur Duration", and "B ALD Cur-Minor Alarm N-Cur Duration" cannot be configured. When the parameter is set to 3, "ANT_B ALD Current Minor Alarm Occur Th", and "ANT_B ALD Current Minor Alarm Clear Th" cannot be configured. GUI Value Range: UER_SELF_DEFINE1(User Self Defined Type 1), UER_SELF_DEFINE2(User Self Defined Type 2), UER_SELF_DEFINE3(User Self Defined Type 3), TMA12DB_ONLY_NON_AISG(For 12 dB non-AISG TMA), TMA24DB_ONLY_NON_AISG(For 24 dB non-AISG TMA), RET_ONLY_COAXIAL(For RET only (coaxial)), TMA12DB_AISG(For 12 dB TMA and RET or 12 dB TMA (AISG)), TMA24DB_AISG(For 24 dB TMA and RET or 24 dB TMA (AISG)) Actual Value Range: UER_SELF_DEFINE1, TMA12DB_ONLY_NON_AISG, TMA24DB_ONLY_NON_AISG, RET_ONLY_COAXIAL, TMA12DB_AISG, TMA24DB_AISG, UER_SELF_DEFINE2, UER_SELF_DEFINE3 Unit: None Default Value: UER_SELF_DEFINE1

OverCurAlmThdB BSC6900 SET BTSRXUBP(Optional)

Meaning: Abnormally alarm raise threshold triggered by too heavy current of the ANT_B tributary antenna. When the actual current is higher than the configured value, the ALD Current Abnormally Alarm is triggered with the corresponding alarm tributary No. of 0. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 320

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OverCurClrThdB BSC6900 SET BTSRXUBP(Optional)

Meaning: Abnormally alarm clearance threshold triggered by too heavy current of the ANT_B tributary antenna. When the actual current is lower than the configured value, the ALD Current Abnormally Alarm clearance is triggered with the corresponding alarm tributary No. of 0. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 280

UnderCurAlmThdB BSC6900 SET BTSRXUBP(Optional)

Meaning: Abnormally alarm triggering threshold when the ANT_B tributary antenna current is too light. When the actual current is lower than the configured value, the ALD Current Abnormally Alarm is triggered with the corresponding alarm tributary No. of 1. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 40

UnderCurClrThdB BSC6900 SET BTSRXUBP(Optional)

Meaning: Abnormally alarm clearance triggering threshold when the ANT_B tributary antenna current is too light. When the actual current is higher than the configured value, the ALD Current Abnormally Alarm disappears with the corresponding alarm tributary No. of 1. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 60

MinorAlmThdB BSC6900 SET BTSRXUBP(Optional)

Meaning: Threshold for triggering prompt alarm clearance when the ANT_B tributary antenna current is too heavy. When the actual current is higher than the configured value, the ALD Current Prompt Alarm clearance is triggered. GUI Value Range: 10~3500 Actual Value Range: 10~3500 Unit: mA Default Value: 170

MinorClrThdB BSC6900 SET BTSRXUBP(Optional)

Meaning: Threshold for triggering prompt alarm clearance when the ANT_B tributary antenna current is too heavy. When the actual current is lower than the configured value, the ALD Current Prompt Alarm clearance is triggered. GUI Value Range: 10~3500 Actual Value Range: 10~3500

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Unit: mA Default Value: 140

OverCurDurB BSC6900 SET BTSRXUBP(Optional)

Meaning: When the ANT_B tributary antenna current abnormally check mode is set to Mode 3, the parameter ALD Current Prompt Alarm is checked by periodical pulse. The periodical pulse consists of antenna over-current duration and normal current duration. This parameter is the ANT_B tributary antenna over-current duration. GUI Value Range: 100~10000 Actual Value Range: 100~10000 Unit: ms Default Value: 1500

NormalCurDurB BSC6900 SET BTSRXUBP(Optional)

Meaning: When the ANT_B tributary antenna current abnormally check mode is set to UER_SELF_DEFINE3, the parameter ALD Current Prompt Alarm is checked by periodical pulse. The periodical pulse consists of antenna over-current duration and normal current duration. This parameter is the ANT_B tributary antenna normal current duration. GUI Value Range: 100~10000 Actual Value Range: 100~10000 Unit: ms Default Value: 2500

Table 5-2 Parameter description for GSM GATM board


AMPC0 BSC6900 SET BTSDATUBP(Optional)

Meaning: Whether to supply power to the TMA on tributary 0 GUI Value Range: OFF(OFF), ON(ON) Actual Value Range: OFF, ON Unit: None Default Value: OFF

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MODE0 BSC6900 SET BTSDATUBP(Optional)

Meaning: Alarm mode of feed tributary 0. There are three alarm modes. Alarm mode 1 has only one type of alarms. The alarm current is fixed and greater than the normal working current. Alarm mode 2 has two types of alarms: warning alarms and critical alarms. The alarm current is fixed and greater than the normal working current. Alarm mode 3 has two types of alarms: warning alarms and critical alarms. The warning alarm current is periodical pulse current, while the critical alarm current is fixed. GUI Value Range: MODE1(Mode1), MODE2(Mode2), MODE3(Mode3) Actual Value Range: MODE1, MODE2, MODE3 Unit: None Default Value: MODE1

MAJORALMUP0 BSC6900 SET BTSDATUBP(Optional)

Meaning: Critical alarm threshold against excessive TMA feed current of feed tributary 0. When the actual current is greater than the specified value, a TMA feed current critical alarm is generated. GUI Value Range: 0~2000 Actual Value Range: 0~2000 Unit: mA Default Value: 170

ALMD0 BSC6900 SET BTSDATUBP(Optional)

Meaning: If the feed current of the TMA on tributary 0 is smaller than the value of this parameter, the TMA Low Temperature alarm is triggered. GUI Value Range: 0~2000 Actual Value Range: 0~2000 Unit: mA Default Value: 30

MINORALMUP0 BSC6900 SET BTSDATUBP(Optional)

Meaning: Warning alarm threshold against excessive TMA feed current of feed tributary 0. When the actual current is greater than the specified value, a TMA feed current warning alarm is generated. GUI Value Range: 0~2000 Actual Value Range: 0~2000 Unit: mA Default Value: 170


Meaning: Whether to supply power to the TMA on tributary 1 GUI Value Range: OFF(OFF), ON(ON) Actual Value Range: OFF, ON Unit: None

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5-10


Default Value: OFF




Meaning: Critical alarm threshold against excessive TMA feed current of feed tributary 1. When the actual current is greater than the specified value, the TMA feed current critical alarm is generated. GUI Value Range: 0~2000 Actual Value Range: 0~2000 Unit: mA Default Value: 170




Meaning: Warning alarm threshold against excessive TMA feed current of feed tributary 1. When the actual current is greater than the specified value, the TMA feed current warning alarm is generated. GUI Value Range: 0~2000 Actual Value Range: 0~2000 Unit: mA Default Value: 170

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5-11











Meaning: Warning alarm threshold against excessive TMA feed current of feed tributary 2. When the actual current is greater than the specified value, the TMA feed current warning alarm is generated. GUI Value Range: 0~2000 Actual Value Range: 0~2000 Unit: mA

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5-12


Default Value: 170









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5-13











Meaning: If the feed current of the TMA on tributary 4 is smaller than the value of this parameter, the TMA Low Temperature alarm is triggered. GUI Value Range: 0~2000 Actual Value Range: 0~2000 Unit: mA

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5-14


Default Value: 30









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5-15






Table 5-3 Parameter description for UMTS Connection With TMA


PWRSW NodeB SET ALDPWRSW(Optional)

Meaning: ALD power supply switch status GUI Value Range: ON, OFF Actual Value Range: ON, OFF Unit: None Default Value: -

DEVTP NodeB ADD ALD(Optional) MOD ALD(Optional)

Meaning: ALD type GUI Value Range: SINGLE_RET, STMA, MULTI_RET, SASU Actual Value Range: SINGLE_RET, STMA, MULTI_RET, SASU Unit: None Default Value: -

GAIN NodeB SET TMAGAIN(Mandatory)

Meaning: STMA gain GUI Value Range: 0~255 Actual Value Range: 0~63.75 Unit: dB Default Value: -

ATTEN NodeB SET RXATTEN(Mandatory)

Meaning: It is the value of WRFU/RRU Rx attenuation. GUI Value Range: 0, 4~30 Actual Value Range: 0, 4~30 Unit: dB Default Value: -

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5-16


MODE NodeB SET TMAMODE(Mandatory)

Meaning: STMA working mode GUI Value Range: NORMAL(Normal Mode), BYPASS(Bypass Mode) Actual Value Range: NORMAL, BYPASS Unit: None Default Value: -

5.2 Parameters of Remote Rlectrical Tilt

Table 5-4 Parameter description


TILT NodeB SET ANTTILT(Optional)

Meaning: RET antenna tilt GUI Value Range: -100~300 Actual Value Range: -10~30, Step:0.1 Unit: degree Default Value: -

AER NodeB SET TILTAER(Optional)

Meaning: It is the tilt alarm error range of the RET antenna. GUI Value Range: 0~10 Actual Value Range: 0.0~1.0, Step:0.1 Unit: degree Default Value: 5

The Actual Value Range of the parameter TILT, described by the table above, means the data that the user can send out from the BTS to the RET. Whether the RET can be actually adjusted to this tilt also rests with the tilt range supported by the RET antenna, which is varies with models and vendors.

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Antenna System 6 Counters



6-1

6 Counters

For the counters, see the BSC6900 GU Performance Counter Reference.

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Antenna System 7 Glossary



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7 Glossary

For details about the acronyms, abbreviations, terms, and definitions, see the Glossary.

Glossary.htm

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Antenna System 8 Reference Documents



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8 Reference Documents

There are no specific reference documents associated with this feature.

Antenna System

Documents

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