Strategy Document for RUS Deployment

Strategy for RUS deployment 1- Background: Ericsson has announced last time buy for Flamingo BTS and has introduced RUS BTS. RUS BTS has few advantages/Limitations over Flamingo BTS’s:

2- Advantages: › Better Sensitivity of Radio Unit Support Receiver sensitivity of (-113) dbm against (-104) dbm of flamingo › Reduced Number of GSM Antennas Support 8 number of TRX with Single 2 port GSM Antenna against 4 TRX in Flamingo. › Higher Configuration in single Cabinet: Max TRX possible in single Cabinet is (24 TRX (2G) + 12 TRX (3G) +12 TRX (LTE)). ›Reduced Power requirements: Power requirements are less as compared to Flamingo BTS › Reduced Foot Prints: Foot Prints requirements are less Compared to Flamingo BTS with Higher Configuration.

3- Limitations: › TCC Feature Not Supported: TCC feature is not supported by RUS hence at existing TCC sites cannot be used. › TRX SW Configuration in BSC’s Against the Total number of TRX in BTS, BSC SW also needs to be configured. › Minimum Configuration Minimum Configuration in one sector will be 4 TRX. Following are the Model Types of RUS BTS: 1- RUS 6101 (outdoor 48V) ( 900/1800 MHZ ) Max configuration (Dual Band: RUS): 3x4 + 3x4 (6 Radio units; 2 Digital Units) 2- RUS 6202 (Indoor 48V) ( 900/1800 MHZ ) Max configuration (Dual Band: RUS): 3x4 + 3x4 (12 Radio units; 2 Digital Units) 3- RUS 6201 (Indoor 48V) ( 900/1800 MHZ ) Max configuration (Dual Band: RUS): 3x8 + 3x8 (12 Radio units; 2 Digital Units) 4- RUS 6601 (Indoor 48V) ( 900/1800 MHZ ) Max configuration (Dual Band: RUS) : 3x4 + 3x4 (6 Remote Radio units ; 2 Digital Units )

4- Technical Details about RUS: Following are the Major building Blocks of RUS BTS: 1- Multi standard Radio Unit (RUS) 1 RUS unit support 4 TRX HW Supports 2 Technologies simultaneously. RX Sensitivity -117.8 dBm 2- Digital Unit for GSM (DUG) Controls upto 12 TRX For > 12 TRX additional DUG in sync with additional DUG. 3- Power supply unit (PSU)

5- BOQ of RUS BTS: Based on BOQ study following are the major observations: 1- Hardware available will be in the granularities of 4, however actual configuration will be controlled by SW licenses in the BSC. 2- All Interfaces at RUS BTS which needs to be connected to GSM/MW system are similar to that of flamingo BTS. Hence no changes are required at Jumper/feeder etc. 3- Power requirements of BTS are less as compared to Flamingo hence similar Power cable used of Flamingo BTS Power supply (2 core 6 sq mm for Indoor and 35 sq mm for Outdoor) can be used with RUS BTS types respectively. 4- Sync cables (Cables connecting 2 BTS at same sites) are not part of BOQ and if needed, needs to be mentioned separately in BOQ and will be delivered FOC. 5- 1 PCM Cable with 2 E1’s capacity will be delivered along with BTS till 4+4+4 Configuration and 2 PCM Cables will be delivered along with 6+6+6 or higher configuration.

6- High Level Deployment strategy & Factors affecting the deployment of RUS: 1. RUS BTS will be deployed only on Planned Cabinet expansions in FY-13 and High Traffic Sites(>10 TRX 10 TRX at Top 14 L

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Possible swappable Sites with > 10 TRX at Top 14 L

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Additional Requirement of BTS

62

Additional Requirement of BTS

-20

a- Outdoor BTS      

More number O/D Flamingo BTS are required than the freed available BTS after Cabex with RUS. BTS swapping of existing 2954 BTS with Outdoor RUS BTS 6101(4,4,4) is to be done for sites with > 10 TRX in Top 14 engineer location. After this swapping 1 O/D Flamingo BTS with minimum 5 DRU’s will be freed at each site. These BTS will be used for New Sites & pending O/D Cabex as (2,2,2) configuration. Rest of the DRU’s will be utilized for upgrades on exiting sites with DRU/DTRU. For pending additional BTS requirements (62), O/D Flamingo Cabinets to be ordered. These Cabinets will be used as (2,2,2) configuration BTS for New town rollout.

** 70 number of 2954 BTS has been approved with 2+2+2 configuration against these Cabinets. b- Indoor BTS 

As Number of Indoor BTS freed after Cabex with RUS are higher as compared to the requirement, hence No additional swapping of indoor BTS is required. ** As many of the freed Flamingo 2954 BTS (approx 52%) require power supply of -24 V and at New Sites IP’s are only providing -48 V Supply, hence to reutilize these BTS DC-DC converter from -48V to -24V have been proposed. 1- Performance of different vendors needs to be evaluated for procurement. 2- Power Rating Needs to be clearly mentioned on SRN of Flamingo BTS to ensure proper segregation in Warehouse.