Applicable Area
DBS3900 WiMAX Site Survey Guide V2.0Confidentiality:
INTERNAL
DBS3900 WiMAX Site Survey Guide V2.0Confidentiality:
INTERNAL
Applicable AreaChinaProduct NameDBS3900 WiMAX
Intended AudienceSurvey engineersProduct VersionAll versions
DepartmentWireless Technical Service DeptDocument VersionV
2.0
Date2008-07-25
DBS3900 WiMAX Site Survey Guide
(V2.0)Prepared byGTS Wireless Product Import Service
DeptDate2008-05-13
Reviewed by Date
Reviewed byDate
Approved byDate
Huawei Technologies Co., Ltd.All rights reservedRevision
Record
DateRevision Version DescriptionAuthor
2008-05-13V1.0Initial transmittalZhao Cengyang
2008-06-25V2.0Modified Wang Jingxiong
Contents71 Overview of the Site Survey
71.1 Version Description
71.1.1 Introduction to the System
91.2 System Configuration
102 Introduction to the Site Survey Procedure
102.1 Preparation
102.1.1 Equipment Configuration List and Technical Proposal
102.1.2 Preparing Documents
102.1.3 Preparing Tools
112.2 On-Site Preparation Coordination Meeting
112.3 On-Site Survey
112.4 Site Preparation before Installation
123 Fill-in of Site Survey Report
123.1 Cover Information
123.1.1 Customer Name
123.1.2 Contract Number
133.1.3 Quotation Number
133.1.4 Office Surveyed
133.1.5 Engineering Type
133.1.6 Contact Methods
144 DBS3900 WiMAX Site Survey
144.1 Collecting Site Information
144.1.1 Equipment Room
154.1.2 Tower and Floor
154.1.3 Parameters of Transmission Ports
164.1.4 Grounding System
164.1.5 Communication with Customer
164.2 Installation Space of DBS3900 WiMAX BBU in 19-Inch
Space
164.3 Installation Space Requirements of RRU3701C
174.3.1 Dimensions of RRU3701C
174.3.2 Installation Space of Fan-Cooled RRU3701C
184.3.3 Installation Space of Naturally Cooled RRU3701C
204.4 Installation Space of Vertical Frame
214.5 Cabling Design Principles
224.5.1 Feeder System Design Principles
244.5.2 Surveying External Cables
334.5.3 U-Shaped Card of Pole-Mounted GPS Antenna Support
334.5.4 Outdoor Cable Conversion Box
344.5.5 Precautions in Site Survey
344.6 Information Organization and Confirmation
354.7 Survey Document Delivery
Figures7Figure 1-1 WiMAX network architecture
16Figure 4-1 Requirements of DBS3900 WiMAX BBU on the
installation space (unit: mm)
17Figure 4-2 Space occupied by the fan-cooled RRU3701C (unit:
mm)
17Figure 4-3 Space occupied by the naturally cooled RRU3701C
(unit: mm)
18Figure 4-4 Recommended installation space of the fan-cooled
RRU3701C (unit: mm)
19Figure 4-5 Recommended installation space of the naturally
cooled RRU3701C (unit: mm)
20Figure 4-6 Minimum installation space required by the
naturally cooled RRU3701C (unit: mm)
21Figure 4-7 Installation space of the vertical frame (unit:
mm)
22Figure 4-8 Floor plan of the DBS3900 WiMAX equipment room
24Figure 4-9 Top view of feeder installation
25Figure 4-10 Power cable of the DBS3900 WiMAX BBU
25Figure 4-11 Grounding cable of the DBS3900 WiMAX BBU
27Figure 4-12 CPRI optical cable of the DBS3900 WiMAX
29Figure 4-13 GPS clock signal conversion cable
30Figure 4-14 Power cable of the DBS3900 WiMAX RRU
31Figure 4-15 Grounding cable of the DBS3900 WiMAX RRU
32Figure 4-16 Panel of the CDUC
33Figure 4-17 Specifications of the U-shaped card for installing
GPS antenna support on a pole
34Figure 4-18 OCB structure
Tables22Table 4-1 Relationship between the effective height h
and distance d
26Table 4-2 Network cable set - Auxiliary network cables of the
DBS3900 WiMAX for R6 interface
27Table 4-3 Optical fiber set - Single-mode optical fiber of
DBS3900 WiMAX for R6 interface
28Table 4-4 Optical fiber set - Multi-mode optical fiber of
DBS3900 WiMAX for R6 interface
34Table 4-5 Electrical specifications of OCB
1 Overview of the Site Survey
1.1 Version DescriptionThis site survey guide is applicable to
operations of the site survey in the new deployment, expansion, and
reconstruction of the DBS3900 WiMAX distributed base station. This
guide describes operation methods, requirements, and main survey
items in a practical site survey according to product features and
survey design specifications. It also describes product knowledge
and data used in the site survey to allow relevant site survey
engineers to learn about the survey contents and knowledge of the
DBS3900 WiMAX distributed base station, to improve the survey
quality and implement the survey task efficiently, quickly, and
completely.
1.1.1 Introduction to the System The WiMAX system consists of
the mobile station (MS)/subscriber station (SS), access service
network (ASN), and connectivity service network (CSN).Figure 1-1
shows the WiMAX network architecture.Figure 1-1 WiMAX network
architecture
The functions of each WiMAX component are as follows:
AAAThe authentication, authorization, and accounting (AAA) is a
high performance remote authentication server providing services
such as the authentication, authorization, accounting, and
value-added services. The AAA supports a variety of databases. The
AAA features the powerful agent function and flexible
operations.
ASNThe access service network consists of the base station (BS)
and the access service network gateway (ASN-GW). The ASN can be
connected to multiple CSNs. The ASN provides the radio access
service for the CSN of network service providers (NSPs) and WiMAX
subscribers. The ASN manages the IEEE 802.16e air interface. The
ASN provides the following functions: Establishing layer-2
connections between the BS and MS
Transferring AAA messages to the homing NSP of the MS
Assisting the upper layer to establish layer-3 connection with
the MS to allocate IP addresses
Establishing and managing the tunnel between the ASN and CSN
Responsible for the ASN mobility management and handover
Responsible for the intra-ASN paging and location management
Radio resource management (RRM)
Storing the temporary user information list
ASN-GWThe ASN-GW is a logical functional entity with a control
plane. The ASN-GW interworks with the ASN internal NE (for example,
BS). The ASN-GW can also interwork with the CSN or other ASN NEs.
The ASN gateway provides the routing and bridging functions in the
bearer plane. Huawei ASN-GW product is the WASN9770.BSThe BS is
responsible for receiving and transmitting radio signals. The BS
implements the communications between the WiMAX and MS. Huawei BS
product is the DBS3900 WiMAX.
CSNThe CSN can be composed of the router, AAA agent or server,
subscriber database, and Internet gateway. The CSN can be a new
network entity of the WiMAX system. The CSN function can also be
implemented through an existing network device. The CSN provides
the IP connection for WiMAX subscribers. The main functions of the
CSN are as follows: Allocation of MS IP addresses and subscriber
session parameters
Internet access
Establishment of layer-3 connection forwarding messages for MSs
(for example, IP address allocation)
Transfer of RADIUS message to the homing NSP of WiMAX
subscribers for the AAA of subscriber sessions
AAA agent or server
Subscriber billing and settlement
Subscriber parameter-based QoS and permission control Inter-ASN
mobility management
Establishment and management of the tunnel between the ASN and
CSN
WiMAX services such as location-based services and group
broadcast service
MS/SSMS/SS is the subscriber part of the WiMAX system. The MS/SS
provides the universal function device between the user equipment
and BS.
PPSThe prepaid service (PPS) allows a subscriber to prepay a
service with certain amount (for example, duration or data traffic
with certain volume in the data PPS). The system traces the usage
(duration or traffic) of the purchased resources in real time and
deducts the currently used fee from the account balance in real
time.SCPThe service control point (SCP) is the core component of
the intelligent network (IN). The SCP stores subscriber data and
service logic. The SCP receives query messages from the service
switching point (SSP), queries the database, and implements the
decoding. The SCP starts different service logics according to call
events reported by the SSP. Then, the SCP sends call control
instructions to the corresponding SSP according to service logics
and implements intelligent calls.1.2 System ConfigurationFor
details, see the Configuration Manual.
2 Introduction to the Site Survey Procedure
2.1 PreparationUpon the receipt of the site survey notice,
engineers should carefully read the contract, technical proposal,
and networking diagrams, and learn about the configurations of
equipment in each office and their connection relations. Engineers
must consult relevant personnel in time if any question is unclear.
After engineers are familiar with the entire project, the engineers
should contact the customer in advance and determine the site
survey coordination meeting, on-site survey personnel, time, and
job arrangements.
2.1.1 Equipment Configuration List and Technical Proposal
Engineers should carefully study the Technical Proposal and
equipment configuration list to learn about the entire project. If
relevant engineers have any question about the Technical Proposal
or equipment configuration or the technical solution, project
responsibility matrix, or schedule arrangement is unclear in the
Technical Proposal, they should negotiate with the engineer who
handles the contract in time to reach an agreement.
Some items in the contract or the technical proposal may be
incorrect or missed. In this case, survey engineers must review the
technical solution on the realizability and operability of the
project based on their rich experience on the project. If a problem
is found in the review, survey engineers must feed back it to sales
and R&D personnel to modify the technical solution and contract
configuration in time. This procedure can avoid further errors and
losses.
2.1.2 Preparing DocumentsSurvey engineers prepare the following
documents and information:
The Site Survey Notification
Name, telephone number, and address of the responsible person of
the customer
The Technical Proposal and equipment configuration list The
DBS3900 WiMAX Site Survey Guide 20080513-B-V1.0 The HUAWEI DBS3900
WiMAX Site Preparation Guide2.1.3 Preparing ToolsSurvey engineers
prepare the following tools: Drawing tools such as ruler, set
square, automatic pencil, rubber, and paper
Tape more than 4.5 m
Laptop computer
2.2 On-Site Preparation Coordination Meeting
The purpose of the survey coordination meeting is to allow
Huawei engineers to have a face-to-face communication with the
leader of the customer, to allow the leader of the customer to know
this engineering basically and perceptually. Through the
coordination meeting, the customer can understand and support the
current and future jobs of Huawei better. The methods of the survey
coordination meetings vary with projects. For common projects or
low-level customers, engineers can introduce the project to the
leader in a symposium. For important, complicated, or high-level
projects, engineers can introduce the project to the leader in
technical conferences or other methods with the help from various
departments of Huawei.
Upon the arrival of the site, design engineers must contact the
responsible personnel of Engineering Dept, Maintenance Dept, or
Network Construction Dept of the customer, and the engineering
technical personnel first. Design engineers introduce the complete
project implementation procedure to relevant personnel of the
customer in detail, and familiarize the customer with relevant
preparations. In the meeting, Huawei engineers determine the
implementation timetable of the project together with relevant
personnel of the customer.
2.3 On-Site SurveyIf an office meets the site survey condition,
Huawei engineers can perform the on-site survey. Engineers should
request the customer to prepare relevant facilities in advance,
such as power supply, grounding bar, air-conditioner, cabling rack,
and raised floor. Survey engineers determine the positions of the
equipment, cabling path, and reserved position for the expansion
together with the customer. Survey engineers can learn about
construction parameters of the equipment room, distance between
equipment rooms, and available wires of optical cables from the
personnel of the customer.
Huawei engineers should carry out the on-site survey according
to the contract and survey report requirements, carefully survey
each item, and record data in detail. All data must be obtained
based on the practical survey. 2.4 Site Preparation Before
Installation
Survey engineers should check the initial installation
environment in the case of on-site survey. According to the Site
Preparation Checklist in the HUAWEI DBS3900 WiMAX Site Preparation
Guide, survey engineers determine whether the installation
conditions of the equipment are met and guide the customer to
prepare for the installation.
3 Fill-in of Site Survey Report
3.1 Cover Information3.1.1 Customer NameFill in the full name of
Party A in the contract, for example, Jilin Post and
Telecommunications Appliances Corp.
Party A does not refer to end users. Fill in Party A of the
contract in this item.
3.1.2 Contract Number
The contract number consists of 14 or 18 digits. The contract
number must be filled correctly without any missed digit and wrong
digit.
For a 14-digit contract number, the first six digits represent
the local zip code, the following six digits indicate the date that
the contract is signed on, and the last two digits are the internal
code of Huawei, generally 0A or 0B.
The 18-digit contract numbering standard is an improvement and
supplementation to the original contract numbering rule. The new
standard unifies the contract numbering rules in national and
international markets, solves the year 2000 problem in contract
numbering, and meets the requirements of subsidiaries, joint
ventures, and various business departments of Huawei on
development. The 18-digit contract numbering standard will
gradually replace the original 14-digit numbering standard.
Structure of the 18-digit contract number
The descriptions of each information field of a contract number
are as follows:
[Zip code]: For the domestic market, this field represents the
zip code of the area that the customer is in. It is a nationally
unique 6-digit number. For the international market, the zip code
is represented in 000 + country code (three letters). The country
code is determined according to GB/T 2659-94 Codes for the
Representation of Names of Countries and Regions (equivalent to
ISO3166 Codes for the Representation of Names of Countries and
Their Subdivisions revised in July 1993). The country code consists
of three Latin letters included in the name of the country or
subdivision (see the appendix). The first three digits of the field
are set to zero by default.
[Contract signing date] This field indicates the date that the
contract is formally signed on. The first four digits indicate the
year, the two digits in the middle indicate the month, and the last
two digits indicate the day. For example, if a contract is signed
on June 15, 2000, this field is 20000615.
[Contract type] The contract type is represented by one digit: 0
Sales contract; 1 Office inventory demand contract; 2 Sales return
material contract; 3 Internal requisition demand contract; 4
Internal requisition return material contract; 5 Loss replenishment
contract; 6 Loss return material contract; 7 Exhibition contract; 8
Pilot Contract; 9 Loan goods contract.
[Serial number] The serial number is represented by one of 26
English letters in sequence. This field indicates the serial number
of a contract among multiple contracts signed with one customer in
a day. At most 26 contracts can be signed with a customer in a
day.
[Associated enterprise code] This field defines the associated
enterprise (business department) of Huawei. The meanings of various
enterprise codes are as follows: HW Huawei Technologies Co., Ltd.;
SH Shanghai Huawei; NH Huawei New Technology, HB Hebei Huawei; HD -
Huawei Electric Co., Ltd.; SD Shandong Huawei; HJ Huawei Integrated
Circuit Design Center; SY Shenyang Huawei; HX Huawei Information;
BF Beijing Northern Huawei Telecommunication Technologies Co., Ltd;
AZ Huawei Installation; TJ Tianjin Huawei; SC Sichuan Huawei
For example, if Hebei Huawei signed a sales contract with
Baoding Telecommunication Bureau on June 15, 2000, the contract
number is 071051200006150AHB.
3.1.3 Quotation Number
Fill in the final contract quotation number of the office
corresponding to this survey report. Make sure that the contract
number consists of 16 digits.
3.1.4 Office Surveyed
Fill in the name of the office surveyed. The survey report must
be filled in by referencing the quotation information and contract
information. If the actual office name on site is different from
the office name in the contract quotation, fill in the actual
office name (BB) in a bracket after the original office name AA,
such as AA (BB), or specify in the remark column of the report.
Because a contract often involves multiple offices and one survey
report often concerns only part offices, the number of offices that
have been surveyed must be specified in the survey report. In the
survey report, engineers must use the actual office name.
3.1.5 Engineering Type
The engineering types include new deployment, expansion, and
reconstruction.
3.1.6 Contact Methods
Fill in the names or offices, telephone numbers, fax numbers,
and contact person of two parties in the electronic survey report
that is sent to Huawei. The contact person of Huawei is the person
in charge of survey design or project manager of the local office.4
DBS3900 WiMAX Site Survey
4.1 Collecting Site Information
4.1.1 Equipment Room
Survey engineers need to collect the following information of
the equipment room: Detailed address of the office, including the
street, house number, and name of the equipment room building
Name and telephone number of the building owner. With the
information, the customer can communicate with the building owner
conveniently and relevant engineers can contact the building owner
when certain survey data is required or missed.
Position and floor of the DBS3900 WiMAX equipment room and the
layout of the floor
Latitude and longitude of the equipment room in the case of a
special graphical environment
Equipment room information, including the structure and existing
equipment of the equipment room
Length, width, and height (height of the raised floor, headroom,
and ceiling height) of the equipment room
Positions and dimensions of doors, windows, poles, and main
girder
Structure, main girder position, bearing, and decoration of the
equipment room. If the weight capacity of the equipment room is
insufficient, engineers need to fasten the equipment room.
Positions and dimensions of existing equipment in the equipment
room
Positions and dimensions of other obstructions Information of
auxiliary equipment, including the positions of feeder windows and
indoor grounding bar and whether the grounding of the equipment
room meets certain requirements
Positions and heights of original cabling racks and the cabling
of AC and DC cables
Information of air conditioners, illumination, and elevators.
Power supply conditions of the equipment room, including the mains
lead-in mode, AC capacity, and terminal occupation of the existing
AC distribution box. If the DC power is directly led in from
another equipment room, relevant engineers must survey the cable
routing and power supply capacity and check whether the terminals
and battery capacity are sufficient.
Transmission conditions of the equipment room, including the
transmission mode, impedance, and terminal occupancy and routing of
transmission cables of existing transmission equipment.
Space of the cabinet provided by the customer. The space must be
sufficient for installing the DBS3900 WiMAX equipment. In addition,
if the DBS3900 shares the cabinet with the transmission equipment,
survey engineers need to check whether the total installation space
is enough.
4.1.2 Tower and Floor
Survey engineers need to collect the following information on
the tower and floor:2. Detailed information of the site. Because
the outdoor environment is relative complex, survey engineers must
collect related information in detail. If possible, the engineers
can collect certain picture information to facilitate the
design.
3. Tower information and position relative to the equipment
room
4. Height of towers5. Height and occupancy of the platform in
each floor, installation positions of existing equipment, and
platform dimensions
6. Routing of cabling ladders 7. Materials and structure of
towers
8. Preliminary installation positions of antennas
9. Cable routing of antenna feeders
10. Relative positions and directions of towers. Note: Do not
measure the direction with a compass in a floor. The direction
should be determined in locations far away from towers and large
metal objects and the direction must be confirmed in multiple
points.
11. Floor information, including the position of the DBS3900
WiMAX equipment room relative to the building and the appearance
and structure of the building
12. Dimensions and utilization of buildings on the floor
13. Positions and dimensions of existing outdoor cabling
racks
14. Information of the lightning protection grounding net,
including the available positions for grounding points and the
possibility of using lightning protection grounding clips as the
grounding plan.
15. Whether the specifications of poles provided by the customer
meet the installation requirements of the DBS3900 WiMAX.
The pole diameter supported by the pole-mounted DBS3900 WiMAX
RRU ranges from 60mm to 114mm.
The pole diameter supported by the hoop irons of the
pole-mounted OCB ranges from 30mm to 125mm.
The pole diameter supported by the pole-mounted part (U-shaped
card) of the GPS support ranges from 60 mm to 118 mm.
4.1.3 Parameters of Transmission PortsSurvey engineers need to
collect the following parameters of the peer transmission ports
from the customer:
16. GE Ethernet interface or optical interface, interface type
(10 M, 100 M, or 1000M, adaptive or negotiation), transmission
bandwidth, and distance of the transmission line
17. Type of the uplink transmission equipment (exchange or
router, model, and provider)
18. Information of the optical interface, including the type,
wavelength, transmission rate, distance (km), connector type, and
fiber length of the peer optical fiber interface
4.1.4 Grounding System
Survey engineers need to obtain the information of the grounding
system from the accompany personnel of the customer, including the
grounding resistance, locations of ground points, and grounding
routing. The written data is preferred.
4.1.5 Communication with Customer
Survey engineers need to record the site survey results and the
promises made by the customer in the survey report memorandum and
request the customer to confirm and sign on the memorandum. The
survey engineers must collect related information in detail on
site. If possible, the engineers can collect certain picture
information to facilitate the design.
4.2 Installation Space of DBS3900 WiMAX BBU in 19-Inch Space
The DBS3900 WiMAX BBU can be installed in a 19-inch cabinet or
vertical frame (the 19-inch cabinet and vertical frame are
collectively called the 19-inch space) or integrated in the
APM.
Figure 4-1 shows the requirements on the installation space when
the DBS3900 WiMAX BBU is installed in the 19-inch space. Figure 4-2
Requirements of DBS3900 WiMAX BBU on the installation space (unit:
mm)
The requirements of the DBS3900 WiMAX BBU in the installation
space of the 19-inch space are as follows: A space of at least 25
mm in the left is reserved for ventilation.
A space of at least 25 mm in the right is reserved for
ventilation.
A space of at least 70 mm before the panel is reserved for
cabling.
4.3 Installation Space Requirements of RRU3701C
To facilitate the cabling, operation, and maintenance, the
RRU3701C has different requirements on the installation space in
different installation modes. This section describes the
requirements on the installation space according to practical
engineering experiences.4.3.1 Dimensions of RRU3701C
Figure 4-2 shows the actual space occupied by the RRU3701C in
installation.Figure 4-3 Space occupied by the fan-cooled RRU3701C
(unit: mm)
Figure 4-4 Space occupied by the naturally cooled RRU3701C
(unit: mm)
4.3.2 Installation Space of Fan-Cooled RRU3701C
The RRU3701C 1.8G is cooled by fans.Figure 4-4 shows the
installation space required by the fan-cooled RRU3701C.Figure 4-5
Recommended installation space of the fan-cooled RRU3701C (unit:
mm)
A space of at least 500 mm in the bottom is reserved for
cabling. To facilitate maintenance, it is recommended that the
distance between the bottom and ground be at least 1200 mm. A space
of at least 1000 mm in the front is reserved for maintenance. A
space of at least 200 mm in the top is reserved for maintenance. A
space of at least 1000 mm in the left is reserved for maintenance.
A space of at least 1000 mm in the right is reserved for
maintenance.4.3.3 Installation Space of Naturally Cooled
RRU3701C
The RRU3701C 2.3G, 2.5G, and 3.5G are cooled naturally. Figure
4-5 shows the recommended installation space of the naturally
cooled RRU3701C. Figure 4-6 Recommended installation space of the
naturally cooled RRU3701C (unit: mm)
A space of at least 500 mm in the bottom is reserved for
cabling.
A space of at least 500 mm in the front is reserved for
maintenance.
A space of at least 200 mm in the top is reserved for
maintenance.
A space of at least 200 mm in the left is reserved for
maintenance.
A space of at least 200 mm in the right is reserved for
maintenance.
Figure 4-6 shows the minimum installation space required by the
naturally cooled RRU3701C.Figure 4-7 Minimum installation space
required by the naturally cooled RRU3701C (unit: mm)
A space of at least 300 mm in the bottom is reserved for
cabling. A space of at least 300 mm in the front is reserved for
maintenance. A space of at least 100 mm in the top is reserved for
maintenance. A space of at least 100 mm in the left is reserved for
maintenance. A space of at least 100 mm in the right is reserved
for maintenance.4.4 Installation Space of Vertical Frame
To facilitate the cabling, operation, and maintenance, this
section describes the requirements of the vertical frame on the
installation space according to engineering experiences.
Figure 4-7 shows the installation space required by the vertical
frame:Figure 4-8 Installation space of the vertical frame (unit:
mm)
The details are as follows: A space of at least 1000 mm in the
front is reserved for maintenance.
A space of at least 1000 mm in the front is reserved for
maintenance.
A space of at least 500 mm in the left is reserved for
maintenance.
A space of at least 500 mm in the right is reserved for
maintenance.
4.5 Cabling Design Principles
19. Power cables should be routed separately from transmission
cables, signal cables, alarm cables, and feeders. If the cables
must be routed in parallel, the distance must be greater than 200
mm.
20. The bend radius of feeders must meet the following
requirements: For the 7/8 feeder, the bend radius cannot be less
than 250 mm; for the 5/4 feeder, the bend radius cannot be less
than 380 mm.
21. The design of indoor cabling racks must take the cable
routing of equipment in the equipment room into consideration.
Cables should be routed with the minimum number of cabling racks.
Cabling racks should be arranged properly and orderly according to
the actual installation conditions of equipment. The recommended
width of cabling ladders is 400 mm and the recommended installation
height is 2400 mm.
22. The size of the feeder window is 400mm400mm and the size of
the feeder hole in the corresponding wall is 250mm250mm. The lower
edge of the feeder hole should be 100mm higher than the upper edge
of the cabling rack.
23. The PVC bellow should be designed according to its position
(indoor or outdoor), length, and diameter. Figure 4-9 Floor plan of
the DBS3900 WiMAX equipment room
4.5.2 Feeder System Design Principles
24. Summary of engineering parameters: The design of the feeder
system must realize the wireless objective of the earlier network
planning. Before the design, relevant engineers must obtain the
summary of engineering parameters determined in the earlier network
planning, including antenna height, sector azimuth, sector downtilt
angle, and antenna model. The feeder system must be designed based
on the summary of engineering parameters.
25. Antenna support: The antenna support must be designed based
on the conditions of the tower platform and antenna on the roof so
that the support can be installed and fastened conveniently. In
addition, the design of the antenna support must also consider the
physical dimensions of the antenna and the requirements on
diversity and isolation distance. When the antenna is installed on
the tower platform, the horizontal distance between the antenna and
the tower or other metal objects should be equal to or greater than
2m. When the antenna is installed on the building roof, the
effective height h between the lower edge of the antenna and the
roof in the radiation direction of the antenna and the distance d
between the roof edge in the radiation direction of the antenna and
the antenna support must meet the requirements listed in Table
4-1:
Table 4-1 Relationship between the effective height h and
distance dHD
0.5m0~2m
1m2~10m
2m>10m
26. Poles on the roof: When the building height cannot meet the
requirements on antenna height, poles must be set on the roof.
Poles should be installed according to the conditions of the roof
and cannot be blocked by other objects.
27. Outdoor cabling racks: Outdoor cabling racks should be
installed along walls in the shortest route to reduce the
installation difficulty and facilitate feeder grounding. The width
of outdoor cabling racks must meet the requirements on cabling.
28. Lightning protection: Antennas must be installed in the
protection range of the lightning arrester. If the directional
antenna is installed on the roof, the lightning arrester should be
installed on a pole. If other antennas are installed on the roof,
special lightning arresters must be installed. The protection angle
of the lightning arrester in plain areas cannot exceed 45 and that
in lightning intensified and mountainous areas cannot exceed 30.
29. Requirements on antenna isolation: In one system, the
horizontal distance between two antennas of different sectors
cannot be less than 3m. In two different systems, when two antennas
in the same sector are in the same direction, the horizontal
isolation distance between the antennas cannot be less than 3 m and
the vertical isolation distance cannot be less than 0.5m. For the
antenna diversity, when the receiver diversity is the space
diversity, the horizontal distance between two antennas cannot be
less than ten times of the wavelength and the recommended distance
is 3 m.
30. Installation of GPS antennas: GPS antennas should be
installed in positions far away from building edges and cannot be
installed on the short walls around the building roof. Effective
lightning protection devices must be available near the antennas
and the antennas should be installed in the protection range of the
lightning protection devices. The angle between the line connecting
the antenna receiving head, the lightning arrester, or the tower
top and the vertical direction should be less than 45 in plain
areas or 30 in lightning intensified areas. If a tower or lightning
arrester is unavailable, special lightning arresters must be
installed to meet the requirements of the building on lightning
protection. The horizontal distance between the lightning arrester
and antenna should be between 2 m to 3 m. The location that the
satellite antenna is installed in must be wide in vision and is not
blocked by high buildings. The angle of view of the antenna in the
vertical direction must be greater than 90. A satellite antenna
cannot be installed in the radiation range of a directional antenna
with frequency higher than 400 MHz and power more than 1 W. The
distance of the satellite antenna to an omni-directional transmit
antenna must be greater than 20 m. Figure 4-10 Top view of feeder
installation
4.5.3 Surveying External Cables
Cables of BBU1. Power cableThe power input cable connects the
external -48V DC power to the BBU as the working power supply of
the entire BBU.
The power input cables of the BBU include three specifications,
corresponding to the length 0.7m, 0.9m, and 5m respectively.
Specifications of the 0.7m cable (delivered to other areas than
North America and Japan): Power cable-0.7m-(D3 female-2
female)-(H07Z-K-2.5^2 blue+H07Z-K-2.5^2 black)-(2*OT2.5-4);
Specifications of the 0.9 m cable (delivered to North America
and Japan): Power cable-0.9m-(D3 female-2 female)-(14UL1015
black+14UL1015 blue)-(2*OT2.5-4);
Specifications of the 5 m cable (delivered when the DC-BOX is
configured, prepared on site): Electrical cable-450V/750V-227 IEC
02(RV)-6mm^2-blue-44A and electrical cable-450V/750V-227 IEC
02(RV)-6mm^2-black-44A.Figure 4-11 Power cable of the DBS3900 WiMAX
BBU
2. Protection grounding cableOne end of the BBU protection
grounding cable is connected to the protection grounding terminal
on the BBU panel and another end is connected to the protection
grounding bar terminal on the installation site. The specifications
of the protection grounding cables are as follows:
Electrical cable-450V/750V-227 IEC 02(RV)-6mm^2-Yellow green-44A
(delivered to other areas than North America and Japan);
Electrical cable-600V-UL1015-5mm^2-10AWG-Green-50A-105 wire
stranded (delivered to North America and Japan).
By default, each set of equipment is configured with 2m
grounding cable. The actual length is determined based on the site
survey and the cable is delivered in rolls. Figure 4-12 Grounding
cable of the DBS3900 WiMAX BBU
3. Alarm cable
The alarms of external backbone nodes are reported through the
alarm cable. The alarm cable connects the BBU to the APM or DC-BOX.
The specifications of the alarm cables are as follows:
Symmetric twisted pair-UL2464-0.64mm-22AWG-1 pair-Black-Special
for OEM products
Monitoring and alarm cable-Monitoring cable-1.1m-(network port
8-bit-VI)-(CC4P0.48 black(S)-I)-LSZH. It is the alarm cable between
the BBU and PMU and is mandatory in the delivery of APM.
Monitoring and alarm cable-Monitoring cable-2m-(D9
male)-(CC2P0.48 black(S)-I)-(network port 8-bit-VI)-LSZH. It is the
alarm cable between the BBU and EMUA/EMU and is mandatory in the
delivery of EMUA/EMU.
4. FE/GE trunk Ethernet cable
The FE/GE trunk Ethernet cable transfers FE/GE trunk signals and
realizes the electrical connection of R6 interfaces.
Table 4-2 Network cable set - Auxiliary network cables of the
DBS3900 WiMAX for R6 interface
04046009Single cable-Shielded straight through
cable-1.00m-(network port 8-bit-IV)-(CC4P0.5P430U(S))-(network port
8-bit-IV)-LSZH1pcsOptional, IP transmission network cable. When
both the transmission equipment and BBU are installed in the APM,
the network cable of 2m long can be used. By default, the 04040522
is delivered.
04040522Single cable-straight through cable-2.00m-(network port
8-bit-IV)-(CC4P0.5P445U(S))-(network port 8-bit-IV)-shielded
04041054Single cable-Shielded straight through
cable-3.00m-(network port 8-bit-IV)-(CC4P0.5P445U(S))-(network port
8-bit-IV)
04040540Single cable-straight through cable-4m-(network port
8-bit-IV)-(CC4P0.5P445U(S))-(network port 8-bit-IV)-GPRS
04021279Single cable-straight through cable-5.00m-(network port
8-bit-IV)-(CC4P0.5P445U(S))-(network port 8-bit-IV)-shielded,
DL1229
04040101Single cable-straight through cable-10m-(network port
8-bit-IV)-(CC4P0.5P445U(S))-(network port 8-bit-IV)-Shielded
5. Optical cable
The optical cables are divided into the following two types:
One type of the optical cables is used to connect the BBU to the
RRU and transfer CPRI signals between the BBU and RRU. A BBU can be
configured with six optical fibers at most and thus can connect to
at most six RRUs. The optical fiber of the NodeB (Number: 04100099)
is used to perform this function. It is the multi-mode optical
cable. It functions as the optical fiber component that connects
the BBU and RRU and transfers optical signals. The available
lengths include 2 m, 10 m, 20 m, 30 m, 40 m, 50 m, 60m, 100m, and
150 m. The optical fiber is selected according to the site
survey.
Both ends of the optical fiber are equipped with the DLC
connectors. One DLC connector is connected to the optical module
interface on the BBU panel labeled as CPRI0, CPRI1, or CPRI2, and
another DLC connector is connected to the optical module interface
labeled as CPRI1 on the RRU maintenance cavity.
In connection, relevant engineers must make sure that the Tx end
of the BBU corresponds to the Rx end of the RRU and the Rx end of
the BBU corresponds to the Tx end of the RRU. Each RRU is
configured with one optical cable. According to the number of RRUs,
one to three optical fibers can be configured.
Because of the restrictions of the power cable between the APM
and RRU, the length of the optical cable between the BBU and RRU
cannot exceed 180 m.Figure 4-13 CPRI optical cable of the DBS3900
WiMAX
Another type of optical fiber is used to connect R6 interfaces
(from the BBU to the transmission equipment) and realize the
optical connection (from BBU to transmission equipment) of R6
interfaces.
When the R6 interface adopts the optical interface transmission,
the network cable is selected according to the actual site survey
and the type of the peer optical interface provided by the
customer.
Relevant engineers must obtain the following information in the
survey:
Type: Multi-mode or single-mode optical port.
Optical port: STM-1(155 M), STM-4 (155/622H), STM-16 (2.5G), or
STM-64 (10G)
Optical module
Wavelength: 850 nm, 1310 nm, or others
Length: 0.55 km, 10 km, 40 km, or others
Optical fiber length
Table 4-3 Optical fiber set - Single-mode optical fiber of
DBS3900 WiMAX for R6 interface
CodeDescriptionRemarks
14130197Optical jumper-FC/PC-LC/PC-Single mode-2mm-10 mOptional.
Each BBU is configured with two pcs. The optical fiber functions as
the single-mode fiber pigtail between the BBU and ODF. It is
delivered when the BBU R6 interface is configured with the
single-mode optical module. The length of the optical fiber is
determined according to the distance between the BBU and customer
ODF mentioned in the special material information table. By
default, the connector optical fiber of 20 m long is delivered,
namely 14130274.
14130198Optical jumper-FC/PC-LC/PC-Single mode-2mm-5 m
14130274Optical jumper-FC/PC-LC/PC-Single mode-2mm-20 m
14130278Optical jumper-FC/PC-LC/PC-Single mode-2mm-30 m
14130291Optical jumper-FC/PC-LC/PC-Single mode-G.652-2mm-50
m
14130293Optical jumper-FC/PC-LC/PC-Single mode-G.652-2mm-15
m
Table 4-4 Optical fiber set - Multi-mode optical fiber of
DBS3900 WiMAX for R6 interface
Item codeDescriptionRemarks
14130299Optical jumper-FC/PC-LC/PC-Multi-mode-2mm-5 mOptional.
Each BBU is configured with two pcs. The optical fiber functions as
the multi-mode fiber pigtail between the BBU and ODF. It is
delivered when the BBU R6 interface is configured with the
multi-mode optical module. The length of the optical fiber is
determined according to the distance between the BBU and customer
ODF and the connector type mentioned in the special material
information table. By default, the FC/PC-LC/PC connector optical
fiber of 20m long is delivered, namely 14130273.
14130221Optical jumper-FC/PC-LC/PC-Multi-mode-2mm-10 m
14130277Optical jumper-FC/PC-LC/PC-Multi-mode-2mm-30 m
14130296Optical
jumper-LC/PC-LC/PC-Multi-mode-Multi-mode-2mm-5m
14130222Optical jumper-LC/PC-LC/PC-Multi-mode-2mm-10m
14130294Optical jumper-LC/PC-LC/PC-Multi-mode-2mm-30m
14130223Optical jumper-LC/PC-SC/PC-Multi-mode-2mm-10m
14130275Optical jumper-LC/PC-SC/PC-Multi-mode-2mm-30m
14130273Optical jumper-FC/PC-LC/PC-Multi-mode-2mm-20m
6. GPS feederIf the GPS is involved in the contract, the length
of the GPS feeder must be surveyed. The specifications of available
GPS feeders are as follows:
Coaxial cable -Copper-clad aluminum
wire-50ohm-13.5mm-8.7mm-3.55mm-Black-Super flexible 1/2 jumper
Coaxial cable-Smooth copper tube-50ohm-28mm-22.2mm-9mm-Black 7/8
feeder
Coaxial cable-1/2.74mm-50ohm-10.16mm-7.24mm-0mm-International
model: RG8.
Principles of feeder selection:
In the configuration of one geostationary satellite and the M12
satellite card (default configuration), the high-gain antenna A
should be selected. When the distance between the GPS antenna and
the BBU does not exceed 50m, the A+RG-8U super flexible feeder
should be used. If the distance is between 50 m and 100 m
(including 100m), the A+1/2' super flexible feeder should be
used.
In the configuration of one geostationary satellite and the
Resolution T satellite card, the common gain antenna B should be
selected. When the distance between the GPS antenna and BBU does
not exceed 10m, the B+RG-8U super flexible feeder should be used.
If the distance is between 10 m and 50 m (including 50m), the
B+1/2' super flexible feeder should be used. When the distance is
between 50 m and 100 m (including 100 m), the B+7/8'+1/2' feeder
should be selected.
In the configuration of two geostationary satellites, antenna C
that supports two satellite cards is configured. If the distance
between the GPS antenna and BBU does not exceed 10 m, the C+RG-8U
super flexible feeder should be used. If the distance is between 10
m and 50 m (including 50m), the C+1/2' super flexible feeder should
be used. When the distance is between 50 m and 100 m (including 100
m), the C+7/8'+1/2' feeder should be selected.
Generally, the length of a feeder cannot exceed 100 m. If a
longer feeder is required, the length must be confirmed by R&D
personnel.
7. GPS conversion cableEach GPS is configured with one
conversion cable to connect the BBU of the DBS3900 WiMAX to the
lightning protection unit at one side of the BBU.
The specifications of the GPS conversion cable are as follows:
Single cable-RF cable-1m-(SMA50 right angle male)-(RG316-50-1.5/0.5
brown-I)-(N50 straight female-II)-GPS external signal cable.Figure
4-14 GPS clock signal conversion cable
Cables of RRU1. Power cableThe power input cable connects the
external -48V DC power to the RRU as the working power supply of
the entire RRU.
Power input cable Electrical cable-300V-UL2464-3.3mm^2-2*12AWG-
Black jacket (blue and black wires)-Shielded outdoor power
cable-Special for OEM products (default)
Electrical cable-600V/1000V-ROV-K-4mm^2-Black jacket (blue and
brown wires)-36A-Shielded outdoor power cable (delivered to
Europe)
The length of the power cable is determined according to the
site survey. By default, the power cable of 20m long is delivered
and the cables are delivered in rolls. The power cable can be
extended to 60m at most. If the distance is greater than 60m, the
10mm^2 power cable + Conversion box + RRU power cable plan should
be selected.Figure 4-15 Power cable of the DBS3900 WiMAX RRU
RRU extension power cable
The specifications of this type of power cables are as follows:
Electrical cable-600V/1000V-ROV-K-10mm^2-Black jacket (blue and
brown wires)-63A-Shielded outdoor power cable. When the extension
distance of the RRU exceeds 60m, this cable in combination with the
power conversion box and 3.3mm^2 common RRU power cable should be
used. The maximum extension distance is 180m (including the 3.3mm^2
common RRU power cable) and the length of the 3.3mm^2 common RRU
power cable cannot exceed 10m.
2. Protection grounding cableThe specifications of the RRU
protection grounding cable are as follows: Electrical
cable-450V/750V-227 IEC 02(RV)-16mm2-Yellow green-85A.
One end of the grounding cable is connected to the protection
grounding terminal of the RRU, and another end is connected to the
connecting terminal of the grounding bar on the installation
site.
By default, the cable of 20m long is delivered and the cables
are delivered in rolls. The cable is tailored and the terminals are
prepared on site. The length of the power cable is determined
according to the site survey. Figure 4-16 Grounding cable of the
DBS3900 WiMAX RRU
3. Optical cableThe optical cable connects the RRU and BBU. For
details, see related contents in Cables of BBU.
4. Feeder cableThe feeder cable is routed between the RRU module
and the antenna to transfer RF signals. When the surveyed distance
between the RRU of the base station and the antenna is less than
20m, the 1/2 jumper is selected. In this case, the RRU side of the
base station should be configured with the 14040315N connector
(bend) and the jumper at the antenna side should be configured with
the 14040150N connector (straight). The connection sequence from
the RRU to the antenna is as follows: RRU (N connector, female)
-> (N elbow, male) 1/2" jumper (N straight, male) -> (N
connector, female) antenna.
When the surveyed distance between the RRU of the base station
and the antenna is greater than 20 m, the 1/2 fixed-length jumper
(99040PRB), the 7/8 or 5/4 main feeder, and the 1/2 fixed-length
jumper (99040PRC) should be configured. The two ends of the main
feeder must be equipped with the 14040521 (configured with the 7/8
aluminum feeder) or 14040179 (configured with the 5/4 aluminum
feeder) DIN connectors.The connection sequence from the RRU to the
antenna is as follows: RRU (N connector, female)>(N elbow, male)
1/2" fixed-length jumper (DIN male)>(DIN female) 7/8" feeder or
5/4" feeder (DIN female)>(DIN male) 1/2" fixed-length jumper (N
straight, male)>(N connector, female) antenna.
Each RRU of the base station provides two antenna ports and the
RF coaxial connectors are configured for the two antenna ports. If
only one monopole antenna is used, one antenna port is occupied. In
this case, the number of RF coaxial connectors, fixed-length
jumpers, and tapes must be reduced by a half. Principle of feeder
length design: The feeder length is determined based on the
distance L between the RRU and the antenna:
In 2.3G and 2.5G, if L is equal to or less than 20 m, select the
1/2 feeder; if L is between 20 m and 45 m (including 45 m), select
the 1/2'+7/8'+1/2' feeder; if L is greater than 45m, select the
1/2'+5/4'+1/2' feeder. The feeder length must be surveyed.
In 3.5G, if L is equal to or less than 20 m, select the 1/2
feeder; if L is between 20 m and 35 m (including 35m), select the
1/2'+7/8'+1/2' feeder; if L is greater than 35m, select the
1/2'+5/4'+1/2' feeder. The feeder length must be surveyed.
5. ConnectorsThe connectors are divided into the following
types:
Straight N connector for the 1/2 jumper: This connector is used
at the antenna side of the jumper. The specifications of this type
of connector are as follows: RF coaxial
connector-N-50ohm-Connector/Straight-male-With 1/2 super flexible
jumper.
DIN connector between 1/2 and 7/8: The connector functions as
the conversion connector between the 1/2 flexible jumper and 7/8
feeder.
DIN connector between 1/2 and 5/4: The connector functions as
the conversion connector between the 1/2 flexible jumper and 7/8
feeder.
Bend N connector for the 1/2 jumper: The jumper is used at the
RRU side of the jumper of the base station. The specifications of
this type of connectors are as follows: RF coaxial
connector-N-50ohm-Connector/Bend-male-With 1/2 super flexible
jumper
Other cables required are configured according to the site
survey results.
GMKE3DCDUC - Cables of DC Distribution UnitFigure 4-17 Panel of
the CDUC
If the GMK3DCDUC (DC-BOX) is configured as the power equipment,
this section is mandatory.
2. Power cable Electrical power cable-450V/750V-227 IEC
02(RV)-16mm^2-Blue-85A 1 M.
Electrical power cable-450V/750V-227 IEC 02(RV)-16mm^2-Black-85A
1 M.
The default length of the power cable delivered is 5 m and the
power cable is delivered in rolls.
3. Grounding cable Electrical power cable-450V/750V-227 IEC
02(RV)-6mm^2-Yellow green-44A. This type of grounding cable is
delivered to areas without environmental requirements.
Electrical power cable-600V-UL1015 -5mm^2-10AWG-Green-50A-105
wire stranded. This type of grounding cable is delivered to North
America and Japan.
The length of the grounding cable is determined according to the
site survey result.
Cables of APMIf the APM is configured as the power equipment,
this section is mandatory.
1. Power cableOne 2 12AWG bifilar sheathed cable of 8m long is
delivered with the cabinet.
2. Grounding cable Electrical power cable-450V/750V-227 IEC
02(RV)-16mm^2-Yellow green-85A. This type of grounding cable is
delivered to areas without environmental requirements.
Electrical power cable-450V/750V-227 IEC 02(RV)-16mm2-Green-85A.
This type of grounding cable is delivered to North America and
Japan.
The length of the grounding cable is determined according to the
site survey result.
4.5.4 U-Shaped Card of Pole-Mounted GPS Antenna Support
If the support of the GPS antenna is installed on a pole, the
U-shaped card must be configured. Each set of GPS is configured
with one U-shaped card. Figure 4-17 shows the specifications of the
U-shaped card. Figure 4-18 Specifications of the U-shaped card for
installing GPS antenna support on a pole
4.5.5 Outdoor Cable Conversion Box
The power cable delivered with the RRU does not support the
long-distance power transmission. If the equipment room is too far
away from the local power supply, a cable with a larger diameter
must be used to connect the local power supply to the equipment
room. In this case, the OCB must be used at the near end of the RRU
to connect the power cable of the RRU to the cable.
The OCB can be mounted on a wall or pole. The hoop irons are
delivered with the OCB. The pole diameters supported by the hoop
irons range from 30 mm to 125 mm. Figure 4-19 OCB structure Table
4-5 Electrical specifications of OCB
ParameterIndexRemarks
Input characteristics6 mm or 10 mm 2-core shielded cableThe
cable diameter supported by the OCB ranges from 13 mm to 18 mm.
Output characteristics3.3 mm or 4 mm 2-core shielded cable10 mm
to 14 mm
Installation modeOn a metal pole or on a wall
Box weight0.79 kgNet weight
Maximum dimensions of the box (HWD)196 mm 141 mm 78 mm
Protection levelIP65
4.5.6 Precautions in Site Survey
The contents in the survey report related to delivery must be
measured carefully and correctly. An incorrect survey result may
lead to order and production problems, project material errors,
loss of working time, and stoppage, and eventually affect the
long-term operation of equipment.4.6 Information Organization and
Confirmation
The information collected on site must be organized as soon as
possible to avoid information omission. The organized documents
must be confirmed and agreed by the customer and be delivered to
the downstream in time.3. Fill in the primary installation
environment examination form based on the site conditions.4.
Prepare engineering drawings based on the site draft and site
survey results. The equipment room and feeder must be designed in
compliance with related design specifications and drawings must be
prepared in compliance with the drawing specifications.5. Fill in
the survey report based on the contract list, project
responsibility matrix, engineering drawings, and site survey
records. If the site has certain special requirements, specify in
the remark column of the survey report.6. During the information
organization, if the engineer has any questions on the contract
quotation, fill in the Contract Problem Feedback Form in time and
feed back it to the project manager and order management personnel
in time.7. After the primary survey task is finished, summarize the
overview of each site, special problems, predictable problems that
may occur in subsequent engineering implementation, problems in the
survey, and other related contents and output the summary of the
survey.8. After the information organization, supervise the
customer to finish the pre-engineering preparations as soon as
possible to avoid installation failure, wrong goods delivery, and
other problems caused by unilateral changes made by the customer.
The installation environment examination form, engineering form,
and survey report must be confirmed and signed by the customer.9.
The customer must promise a completion date for the items whose
preparations are not completed in the installation environment
examination form. In some cases, if the customer does not promise
to reconstruct the items that do not meet the installation
requirements, a survey memorandum must be signed with the
customer.4.7 Survey Document Delivery
The documents confirmed by the customer must be delivered to the
downstream in time according to the procedure to ensure the smooth
progressing of the entire project.10. The survey report,
engineering drawings, and work report are sent to the Survey Review
Division. After the documents are reviewed, the documents are
delivered to the Order Configuration Section to guide the order
placing and delivery.11. The primary instillation environment
examination form is submitted to the project manager. The project
manager supervises the pre-engineering preparations of the customer
according to the form.12. Engineering drawings are submitted to the
System Design Department and Hardware Design Department and are
combined to engineering files. After the files are reviewed, the
files are sent to the site to guide the engineering
implementation.13. The Contract Problem Feedback Form is sent to
the project manager and order management personnel for contract
problem confirmation and subsequent goods problem handling.14. The
survey summary and memorandum are sent to the project manager and
carbon copied to the System Design Department. All paper documents
signed by the customer must be archived in the company.
2008-8-11Huawei Confidential Page 28 of 35
2008-8-11Huawei Confidential Page 27 of 35
_1279356055.vsd
_1279363586.vsdConnected to the RRU
Connected to the BBU