Introduction
Site Engineering Solution For MobilinkBY
Faran Ul Ghani/Du Erning
Purpose
• This ppt will describe in detail the site engineering swap solutions from existing BTS to new ZTE BTS/NodeB
Key Points
• Difference between Integrated Solution and Distributed Solution.
• Original BTS swapped with ZTE BS8700• BBU Installed in 8910A cabinet.
BTS Swap Scenarios
• Outdoor Macro Site swapped to Outdoor distributed site (IDU Installed in BC Cab)
• Outdoor Macro Site swapped to Outdoor distributed site (IDU Installed in Rectifier)
• Indoor Macro Site Swap to Outdoor Distributed Site
• Indoor Macro Site Swap to Outdoor Distributed Site (After New Rec Move ZTE BTS Outdoor
Outdoor Scenario Before Swap
After Swap
Outdoor to OutdoorScenario -2
After SwapNote: If IDU are less than 3, we will remain the IDU in REC
Indoor to OutdoorScenario -3
After SwapNote: Pre Install recti and ZTE BTS to prop location, IDU will remain in shelter
Indoor to OutdoorScenario -4
After Swap-1
After Swap-2Secondary Swap
Note: Secondary Swap need after new recti ready
Indoor to IndoorScenario -5
After Swap
RF System Swap Solution There are 6 RF system scenarios during the Site Swap RF Scenario 900M 1800M 1 Sector 2 or 3 Sectors • Single band S1-S4 R8881 R8863 • Single band S5-S8 R8881 x2 R8863 x2 • S1~S4 S1~S4 R8881 x2 R8863 x2 • S1~S4 S5~S8 R8881 x3 R8863 x3 • S5~S8 S1~S4 R8881 x3 R8863 x3 • S5~S8 S5~S8 R8881 x4 R8863 x4 • Any sector has a configure which is more than 8 TRXs, R8881 will be used
for all the sectors.
Scenario-1Single band 900M or 1800M sector
only.S1-S4
Scenario-2Single band 900M or 1800M S5-S8
Scenario-3Dual band 900M S1-S4 +1800M S1-S4
Scenario-4Dual band 900M S1-S4, 1800M S5-S8
Scenario-5Dual band 900M S5-8, 1800M S1-4
Scenario-5 CONT
Scenario-6Dual band 900M S5-S8 , 1800M S5-S8
Scenario-6 CONT
Scenario-7 UMTS swap
This scenario is showing the 3G swap • Distributed site: Original 3G RU is installed on
the tower. During the swap, dismantle the original RRU and install ZTE R8881/R8863 in the old location. Connect the jumpers from RRU to the 2100M port of the antenna.
• Macro site: Original 3G RU in the cabinet For some sharing site, there is no space on the tower to install RRU, The RRUs will be installed on the ground with a pole. During the swap, original feeders will be reused, connect the jumpers from RRU to original feeders.
FS- RRU Relations • R8881 connection
The connections between FS and R8881 should comply with the following rules:
• In case of using one FS board: The FS board is placed at slot3 of BBU, An additional FS board will be configured at slot 4 when there are more than 6 sectors.
• Each sector takes one FS port. The secondary R8881 for the same sector will be cascaded to the first R8881.
• The ports of FS board are numbered from 0 to 5 (from right to left).The RRU units are connected to the FS ports in the following order from port No. 0 to port No. 5:
• Not more than 6 sectors:
GSM 900 R8881 in order of cells (lower at first) takes 0, 1, and 2 DCS1800 R8881 in order of cells (lower at first) takes 3, 4, and 5
R8881 connection CONT• More than 6 sectors: GSM 900 R8881 in order of cells (lower at first) takes 0, 1, 2, 3…..(FS board in slot3) DCS1800 R8881 in order of cells (lower at first) takes 0, 1, 2, 3…..(FS board in slot4) UMTS2100 R8881 in order of cells (lower at first) takes 3,4,5 ports of the FS board in slot4.
R8863 connection The connections between FS and R8863 should comply with the following rules: • In case of using one FS board: The FS board is placed at slot3 of BBU. • Each R8863 takes one FS port. The secondary R8863 will directly connect to the FS
board instead of cascading. • The ports of FS board are numbered from 0 to 5 (from right to left).The RRU units
are connected to the FS ports in the following order from port No. 0 to port No. 5: • An additional FS board will be added in the 3G site. GSM 900 R8863 in order of cells (lower at first) takes 0, 1, and 2 DCS1800 R8863 in order of cells (lower at first) takes 3, 4, and 5 UMTS2100 R8863 in order of cells (lower at first) takes 0,1, and 2 of FS in slot4
RET connection
• R8881 The distance between RRU to Antenna is less than 6m ,One standard AISG cable for each sector.
R8881 CONTThe distance between RRU and Antenna is more than 6m ,NSBT and ASBT will be configured for each sector, connect RRU and NSBT with a AISG special cable (DB15 to AISG), and ASBT to the RCU with a AISG standard cable (AISG to AISG).
RET R8863
An AISG special cable connect the R8863 to the RCU for sector A, then cascade the RCU for sector B and C.
Power Supply Solution
All RRUs will be connected to the LLVD 25A breakers on existing rectifier. IF more than 6 RRUs are configured • R8881: parallel connect two RRUs to one breaker. • R8863: connect one RRU to one 25A breaker, add
additional breaker when there are more than 6 R8863.
DCPD7 will be used in the BC cabinet for the BBU&IDU power supply, which is connected to the BLVD breaker of the existing rectifier.
DCPD7
New power system swap.
As Mobilink planned, the new Rectifier will be installed.
Before new rectifier installed, an new ATS and DB will be installed outdoor which will provide the power to the new rectifier.
During the secondary swap, reconnect the power cable of original rectifier to the new built ATS and DB. After all equipments working normally, dismantle the original ATS and DB.
New Power System Swap
New Power System Swap
Transmission solution
In the phase 2, Ericson is using IP for the BTS transmission. All the phase 2 site will use an Ethernet cable connecting from IDU to CC board.
For the outdoor sites, a LPU will be configured for the Lightning protection Unit (LPU). All the signalling cables which is lying out of the BC cabinet, should be connected to the LPU first
Transmission Solution
External Alarm Solution
For Outdoor Sites
PIN and Colour definitionSA board
Labels Guideline
The following items should be abided when fix labels:
• Labels shall be affixed facing the same direction, and the side that indicates the cabling direction shall face upward or face the side of operation and maintenance for ease of reading.
• Both ends of each cable (power cable, grounding cable, transmission cable, jumper wire, and so on) shall be affixed with labels.
• Labels shall be affixed in a neat and workmanlike manner. • A label shall be affixed 200 mm from each end of a feeder, or 20 mm
from each end of a power cable, network cable, signal cable or fibre. • Affix labels on the cables distributed vertically and horizontally in the
way shown in the following figure.
Feeder and Jumper Labels Requirement
[Label Format] Sector ID- ANT1/2 [Labelling Conditions] • Sector ID: Ranges from S1 to S4 • ANT1 for TX/RX, ANT2 for RX
Optical Fibre Labels Requirement
[Label Format] Sector ID- OPB/OPR [Labelling Conditions] • Sector ID: Ranges from S1 to S4 • OPB: Used on BBU side; OPR: Used on RRU
side
Optical Fibre Labels Requirement CONT
When connect RRUs to BBU FS board with optical fibre, it’s very easy to make mistake. So ZTE require all the partners use temporary labels on the fibre's when lay them. The temporary label for fibres requirements are as follows: [Label Format] Fiber-SystemID-SectorID-1/2 [Labelling Conditions] • System ID:GSM900 DCS1800 • Sector ID: Ranges from S1 to S4 • 1/2 means the fiber quantity in one sector [Labelling Conditions]
Label of Main DC Cable
[Label Format] PWR [Labelling Conditions] • Main DC cable include DC power cable of
BS8800, ILP ,DCPD4 and so on.
Label of Outdoor LPB (OLP)
[Label Format] Sector ID-PWR [Labeling Conditions] • Sector ID: Ranges from S1 to S4 • PWR means power.
Label of GPS feeder
Label of Alarm Cable
Label of MW IF Cable [Label Format] MU1-ODU1 [Labelling Conditions] • If IDU more than one, A red remark used to
identify them
Label of Grounding Cable
THE ENDHave a Good DAY
