Company Name: FCC ID: Work Order Number Samsung Telecommunications America NP8-1900-10-PRU 2000034 / A0398 APPENDIX I: USER’S MANUAL Page 122 of 1
Wireless Network Systems CDMA Network Guide C DMA Pi c oBTS TM H a r d w a r e D e sc ri p t i o n CD M A? Si mp l y S am su n g.
Ab o ut th i s d o c um e n t D o c u m e n t t i t l e : S a m s u n g C D M A P i c o B T S TM h a r d w a r e description Document version: 1 Document file name: WS01.03.01.00.fm CD version: 1 CD number: WSN01.01.00 Document date: January 2000 CDMA hardware version: 1.0 CDMA software version: 1 S a m s u n g Te l e c o m m u n i c a t i o n s A m e r i c a , I n c . Customer Care Center 1601 E. Plano Parkway, Suite 150 Plano, Texas 75074, U.S.A Phone: 972.761.7500 Customer Care: 888.987.4357 FAX: 972.
Table of Contents 1 Overview 1.1 Functions 1.2 PicoBTSTM system features 1.3 General specifications 1 1 2 3 2 Operation 2.1 Overview of operation 6 6 2.1.1 Air interface with CDMA handsets 2.1.2 Components 2.2 PicoBTSTM system main unit (PMU) 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 2.3 2.
Detailed specifications 5.1 Mechanical packaging 5.1.1 Mounting 5.1.2 Cabling and connections 5.1.3 Power Consumption 5.
List of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 PicoBTSTM system in communication with the BSC complex and the MSC 2 PicoBTSTM system flexible configurations 5 PMU block diagram 8 PMCC logical interfaces 9 PMU back panel with connectors and mounting hardware 15 PMU with open service door 16 Inside of PMU door 17 PMU service panel 18 PRU as it is shipped from the factory 20 CDMA PicoBTSTM Hardware Description Page 3
List of tables Table 1: PicoBTSTM system specifications CDMA PicoBTSTM Hardware Description 3 Page 4
1 Overv i e w This document describes the Samsung CDMA Pico base TM t r a n s c e i v e r s y s t e m ( P i c o B T S ) , m o d e l S C B S - Z 1 9 P. This doc ument is intende d for per sonne l who administer, install, provision, configure, maintain, or troubleshoot a TM PicoBTS base station in a Samsung CDMA base station system (BSS), as well as traffic engineers who deal with system sizing and performance. 1.
The air interface complies with J-STD-008 and J-STD-019. TM The PicoBTS base station backhaul uses superframe (SF), an unchannelized T1 (AMI) and a proprietary protocol.
TM • PicoBTS main unit (PMU), a light-weight main processor u n i t t h a t m o u n t s i n d o o r s o r o u t d o o r s p o l e , w a l l , o r t o w e r. • PicoBTS radio unit (PRU), a light-weight radio unit that mounts at or near the antenna to cut insertion losses. The PRU is available in 5 W or 10 W models. T h e P M U - P R U i n t e r f a c e , a h e a v y - d u t y, w e a t h e r - p r o o f PMU-PRU interconnect cable.
TM Table 1: PicoBTS base station specifications Parameters Measurements Vaules Weight PMU 115 lb PRU 33 lb without brackets Power 1270 W Voltage 100 to 260 Vac Input frequency 47 to 63 Hz Battery backup input +48 Vdc External to the PMU Temperature -40°C to +52°C (varies with altitude) Humidity 10% to 95% Temperature -40°C to +70°C Humidity 10% to 95% Power Operating environment Storage environment CDMA PicoBTSTM Hardware Description Page 4
BSC T1 PMU PRU PRU BSC Omni, single frequency T1 PMU PRU PRU BSC T1 PRU PMU Three sector, single frequency PRU Two sector, single frequency TM Figure 2 PicoBTS base station flexible configurations CDMA PicoBTSTM Hardware Description Page 5
2 Op erati on T h i s s e c t i o n d e s c r i b e s P i c o B T S TM b a s e s t a t i o n o p e r a t i o n . 2.1 Overview of operation T h e P i c o B T S TM b a s e s t a t i o n s u p p o r t s r e g i s t r a t i o n , synchronization, call setup, origination, and termination as well as handoff for mobile subscriber units.
• • • • P i c o B T S TM r a d i o u n i t ( P R U ) , c o n t a i n i n g t h e t r a n s c e i v e r P i c o B T S TM m a i n u n i t ( P M U ) , c o n t a i n i n g t h e c o n t r o l l e r a n d channel cards PMU-PRU interconnect cable that connects the PRU with the PMU T1 link from the PMU to the BSC capable of transmitting voice and data for more than 82 calls, running a Samsung-proprietary version of HDLC 2.
GPS receiver PMU TFC TFU PRU PCC0 PMCC To/ from BSC T1 TRIC PCC1 PRU PCC2 PCC3 RS-422 PRU 115/220 Vac Power supply assembly (PSA) Heat management system (HMS) Figure 3 PMU block diagram The PMU consists of the following modules (see Figure 3): • PicoBTS main controller card (PMCC) • PicoBTS channel cards (PCC) • Tr a n s m i t a n d r e c e i v e i n t e r f a c e c a r d ( T R I C ) • GPS receiver • Heat management system (HMS) • Power system assembly (PSA) CDMA PicoBTSTM Hardware Descriptio
2.2.1 Th e P M C C The PMCC performs the following major functions: • System control • Fault management • T1 communication • Packet management The interfaces to the PMCC appear in Figure 4. The operations of these interfaces are described in the following paragraphs.
2.2.1.1 S t art- u p During start-up, the PMCC reads a command from the local interface or the T1 link and initializes itself. During this procedure, the PMCC manages the download of executable software and configuration data to the other PicoBTS devices. When the PMU internal temperature is +5 C
2.2.1.4 R eliab ility The PMCC is designed so that no single point failure of critical components will result in more than 50% reduction in c a p a c i t y. T h e o n e e x c e p t i o n t o t h i s r u l e i s t h e i n t e r f a c e t o t h e external T1 backhaul line interface. At a minimum, the PMCC incorporates redundant, electrically isolated controller p r o c e s s o r s a n d a p p l i c a t i o n m e m o r y.
The TRIC interface to the PRU for the forward link consists of combined I and Q baseband signals. The interface for the reverse link allows for cable attenuation. The TRIC-to-PRU interface compensates for cable attenuation. 2.2.
2.2.5 PM U h eat man ag emen t s ys tem (HMS) The HMS maintains the internal temperature of the PMU in the range +5°C to +70°C when the external ambient temperature is in the range of –40°C to +52°C. The HMS has heating, cooling, and heat transfer components that raise or lower the internal temperature to meet these requirements. The HMS reports alarms and other performance data to the PMCC. 2.2.
For the received signal, the PRU amplifies and performs IF down-conversion of the PCS-band RF carrier signals received by the primary and diversity antennas. The transmitter receiver operates over the transmit and receive US PCS Class 1 band frequencies and provides: • Nominal 50-ohm impedance • VSWR < 1.
3 Ph ysi c al c h ar ac te r i s t i c s 3.1 PMU assembly A PMU is shipped from Samsung completely assembled and ready to install. Figure 5 shows the PMU back panel and the connectors for power, PRUs, and the GPS antenna c able. GPS PRU1 (Alpha) PRU2 (Beta) PRU3 (Gamma) T1 Customer I/O Power Figure 5 PMU back panel with connectors and mounting hardware Figure 6 shows the PMU with the service door open. The boards are completely enclosed to maintain the correct operating temperatures inside the PMU.
I/O DC Input cannot be used as primary power source; only backup.
F i g u r e 7 s h o w s t h e i n s i d e o f t h e s e r v i c e d o o r. T h i s d o o r c a n b e removed by compressing the spring on the top hinge and removing the hinge. Upper door hinge and spring Door locks in unlocked position.
GPS DUPLEX 1 1 2 3 4 5 6 7 8 9 10 11 12 CUSTOMER I/O EXT BAT 48V DIV_Q RX TIP RX RING TX TIP TX RING 10 MHZ PRU PORT 1 4 GRD 3 Neutral 2 Line 1 1 T1 Line 2 DUPLEX 1 DIV_Q 10 MHZ AC LINE INPUT PRU PORT 2 DUPLEX 1 DIV_Q Piano hinge 10 MHZ PRU PORT 3 STATUS DISPLAY Circuit breaker panel 19.
3.2 PRU physical characteristics The PRU is a self-contained single unit. Figure 9 shows the P R U a s i t i s s h i p p e d f r o m t h e f a c t o r y.
Rx Diversity Power Indicator (LED) Duplexed Rx/Tx PMU-PRU Interconnect cable Figure 9 PRU as it is shipped from the factory CDMA PicoBTSTM Hardware Description Page 20
4 Mainte n an c e 4.1 Maintenance goals and philosophy M a i n t a i n i n g a P i c o B T S TM b a s e s t a t i o n h a s f o u r g o a l s : • Prevent loss of service to the subscribers • Prevent site visits except as a last resort (replacing a faulty unit) • Send craft persons to the site with all all the equipment required to facilitate replacement • Reduce spares inventory to an absolute minimum The Samsung maintenance philosophy is simple replacement of the entire PMU or PRU.
The mean time between critical failures (MTBCF) is greater than 2.5 years for a three-sector base station and includes all critical functions. 4.2.2 F a i l ur e types A critical failure is a failure that is service critical and r e q u i r e s i m m e d i a t e r e p a i r.
I f t h e P i c o B T S TM b a s e s t a t i o n i s i n s t a l l e d i n a c c o r d a n c e w i t h t h e c l e a r a n c e s p r e s c r i b e d f o r i n s t a l l a t i o n , t h e P i c o B T S TM b a s e station allows easy access to the faulty module for r e p l a c e m e n t . T h e P i c o B T S TM b a s e s t a t i o n i s d e s i g n e d t o minimize the number of steps required to remove and replace a module. 4.3.
5 Detai l e d s pe c i f i ca t i o n s T h i s s e c t i o n p r e s e n t s d e t a i l e d s p e c i f i c a t i o n s f o r t h e P i c o B T S TM base station. This module also discusses compliance to industry standards. 5.
The PMU provides maintenance personnel with access to service panels, status indicators, and unit connections. 5.1.2 C a blin g an d co n n ectio ns The PMU requires the following cabling and connections. • I n p u t v o l t a g e p o w e r o f 1 1 0 / 2 2 0 Va c , 6 0 / 5 0 H z , s i n g l e p h a s e • T1 data connection • GPS antenna 5.1.
• • Code of Feder al Re gulations, Title 47, FCC Par t 15 Radio Frequency Devices, Subpart B Unintentional Radiators (PMU) Code of Feder al Re gulations, Title 47, FCC Par t 24 Per sona l Communications Services, Subpart E Broadband PCS (PRU) CDMA PicoBTSTM Hardware Description Page 26
