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OVERVIEW OF WIRELESS IN LOCAL LOOP

OVERVIEW OF WIRELESS IN LOCAL LOOP. WIRELESS IN LOCAL LOOP - IT IS SOMETIMES CALLED FIXED CELLULAR. - NORMALLY USED FOR RURAL OR UNPOPULATED AREA. WLL CAN BE A QUICK SOLUTION FOR DEPLOYING TELEPHONES INFRASTRUCTURE. ELEMINATES MANY PROBLEMS AND REDUCE COST

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OVERVIEW OF WIRELESS IN LOCAL LOOP

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  1. OVERVIEW OF WIRELESS IN LOCAL LOOP

  2. WIRELESS IN LOCAL LOOP • - IT IS SOMETIMES CALLED FIXED CELLULAR. • - NORMALLY USED FOR RURAL OR UNPOPULATED AREA. • WLL CAN BE A QUICK SOLUTION FOR DEPLOYING • TELEPHONES INFRASTRUCTURE. • ELEMINATES MANY PROBLEMS AND REDUCE COST • INHERENT TO WIRELINE LOOP SYSTEM IN CERTAIN AREAS. • - DECREASES THE TIME TO DEPLOY A NETWORK.

  3. ADVANTAGES OVER GSM - BIGGER COVERAGE AREA. - HIGHER CAPACITY. - IMPROVED SIGNAL AND REDUCED INTERFERENCE. - FREQUENCY REUSE DISTANCE IS REDUCED.

  4. SYSTEM SPECIFICATIONS - SYSTEM IS MANUFACTURED BY LGIC ON IS-95 STANDARDS. - FREQUENCY BAND 824 - 849MHz (FSU - BTS) 869 - 894MHz (BTS - FSU) - MULTIPLE ACCESS METHOD IS CODE DIVISION MULTIPLE ACCESS. - DUPLEXING METHOD IS FDD. - ACCESS CHANNELS PER CARRIER PER SECTOR ARE 23 TO 40. - RF SPACING IS 1.25MHz. - DUPLEX SEPERATION IS 45MHz. - COVERAGE IN RURAL IS UPTO 25 KM AND IN URBAN 5KM RADIUS.

  5. - INTERFACE WITH PSTN V5.2 ( RURAL SYSTEMS) & R2MF /CCS7 ( URBAN SYSTEMS) - ONE BSC CAN SUPPORT 20,000 SUBSCRIBERS (R2/NO.7 SYSTEM) OR 10,000 SUBSCRIBERS (V5.2 SYSTEM) - VOICE CODING 8K/13K QCELP 8K EVRC - MAX. 8FAs CAN BE USED WITH ONE BTS. - ONE BTS CAN SUPPORT UPTO 8,000 SUBSCRIBERS.

  6. SYSTEM CONFIGURATION WLL SYSTEM CONSISTS: - BASE STATION CONTROLLER (BSC) - BASE TRANCEIVER SUBSYSTEM (BTS) - BASE STATION MANAGER (BSM) - FIXED WIRELESS TERMINAL (FWT) - MOBILE STATION (MS)

  7. ITEMS TO BE SUPPLIED - BSM/BSC/BTS/TERMINALS/MOBILE. - DC-DC CONVERTER. - SMPS POWER PLANT FOR BSC/BTS. - BATTERY BANK FOR BSC/BTS. - TOWER/DDF/OPTIMUX. - SOFTWARE, TOOLS &TESTER. - INVERTER FOR BSM -3KVA. - ALARM DEVICE. - ANTENNAS, GPS ANTENNAS. - FEEDER CABLE.

  8. PSPDN PSTN R2/NO.7/V5.2 (E1 LINK) X.25 FWT BSC RS422 (E1 LINK) BSM MS BTS LGIC PROPERIETERY (BHI) BTS NETWORK DIAGRAM

  9. BASE STATION CONTROLLER (BSC) IT IS LOCATED BETWEEN BTS AND PSTN. ITS CAPACITY IS 20,000/10,000 SUBSCRIBERS. IT CONTROLS UPTO 48 BTSs. INTERFACE WITH PSTN - R2/NO.7 - V5.2 BSC FUNCTIONS - CALL PROCESSING BETWEEN WLL AND PSTN, HAND OFF - TRANCECODING 64 KBPS PCM DATA AND CDMA QCELP DATA AND ECHO CANCELLING SUBSCRIBER MANAGEMENT AUTHENTICATION, MOBILITY MANAGEMENT.

  10. - CUSTOMER CALLING SERVICES - PROVIDES INTERFACES - DATA INTERWORKING ( IWF ) - PROVIDES OA AND M OF WLL THROUGH BSM VOICE:- 8K QCELP 13K QCELP 8K EVRC

  11. CUSTOMER CALLING SERVICES R2/NO.7 SYESTEM - CALL FOR WARDING - CALL WAITING - CALL TRANSFER -CALLER LINE IDENTIFICATION PRESENTATION / RESTRICTION - 3- WAY CALLING / CONFERENCE CALL - MALICIOUS CALL TRACE - AUTHENTICATION etc. V5.2 SYESTEM WLL CAN SUPPORT SERVICES TRANSEPARENTLY PROVIDED BY PSTN- LE.

  12. SYSTEM USING R2/NO.7 PROTOCOL IN THIS SYSTEM EXISTING PSTN ACCOMODATES R2 SIGNALLING OR CCS7 SIGNALLING. SYSTEM CAPACITY - 20,000 SUBS. MAX. (18,920) ( TAKING .1 ERLANG PER SUBS. &1%GOS) CONNECTIVITY WITH PSTN - 64E1 LINKS MAX. NO. BTSs WITH ONE BSC - 48 SELECTOR/VOCODING - 1920CHLs. CHANNEL CAPACITY: - 8 SVC CHL/PBA - 16 PBA/SHELF(128 SVC CHLs UPTO 15 SHELVES/BSC (15X128=1920)

  13. IWF CAPACITY: - 512CHLs (UPTO 4SHELVES) SWITCH NETWORK: - T-SWITCH POWER REQUIREMENT: - -48V DC (-43 TO -55V) TEMPERATURE: - 0 ~ 50 DEG.C HUMIDITY : - 0 ~90 % SIZE OF ONE RACK: - 750mm(W)X700mm(D)X1886mm(H)

  14. SYSTEM USING V5.2 PROTOCOL THISSYSTEM ACCOMODATES V5.2 PROTOCOL WHICH IS BEING SETTELED AS STANDARD PROTOCOL FOR WLL SYSTEM. BILLING AND NUMBER TRANSLATION FUNCTIONS ARE PERFORMED BY PUBLIC NETWORK. - TRAFFIC HANDLING CAPACITY : - 995 ERLANG - NO. OF SUBSCRIBERS ACCOMODATED : - 9950 SUBS. (.1E/SUBS) CONNECTIVITY WITH PSTN - 32 E1 LINKS MAX. NO. BTS PORTS - 48 E1 SELECTOR/VOCODING - 1024 CHLs. CHANNEL CAPACITY: - 8 SVC CHL/PBA - 16 PBA/SHELF(128 SVC CHLs - UPTO 8 SHELVES/BSC (8X128=1920)

  15. IWF CAPACITY: - 256CHLs (UPTO 2SHELVES) SWITCH NETWORK: - T-SWITCH POWER REQUIREMENT: - -48V DC (-43 TO -55V) TEMPERATURE: - 0 ~ 50 DEG.C HUMIDITY : - 0 ~90 % SIZE OF ONE RACK: - 750mm(W)X700mm(D)X1886mm(H)

  16. BSC RACKS(R2/NO.7) WICR WNIR MSIR MTIR MINR MHIR VMH/ CMX LSI DCI 16E1 DCI 16E1 DCI DCI 16E1 16E1 CSB5 CSB15 MCIN TSW CSB0 CSB4 CSB10 CSB14 CCIN0 MTU CIN0 CSB3 CSB9 CIN1 CCIN1 DKU/ GPS X.25 TLSP DCIP CSB2 CSB8 CSB13 CSB18 ASP GSP WTFC CSB7 CSB1 CSB12 CSB17 OCP CCSP CCP PDIP0 PDIP1 CSB11 CSB6 CSB16

  17. BSC RACKS(V5.2) WICR WNIR MSIR DCI 16E1 DCI 16E1 CSB3 CSB9 CSB8 TSW CSB2 WTFC CSB1 CSB7 DKU/RGPS CSB0 CSB6 TLSP/DCIP CIN CSB5 OCP VCP CCP CSB4

  18. BSC (R2/NO.7 TYPE) DISSIPATED CURRENT DISSIPATED CURRENT (AMP.) CABINET WICR WNIR MSIR MTIR MINR IWFR 36.20 25.44 36.03 35.40 32.30 18.70 BSM 39.70

  19. WICR (WLL INTERFACE CONTROL RACK) • 1. VMH/CMX (VOICE MASSAGE HANDLER& CONFERRENCE MIXER) • APSU CARD -2NOs. • (ANNOUNCEMENT PRIMARY/SECONDARY UNIT) • IT PROVIDES FACILITY FOR 32 ANNOUNCEMENTS. • CMCAN CARD -2NOs. • ( CLOCK MIXER CIRCUIT BOARD ASSEMBLY) • IT PROCESSES MULTIWAY CALL PROVIDED BY WLL SYSTEM. • 2. LSI (LOCAL SERVICE INTERFACE) • USTAN -2NOs. (UNIVERSAL SIGANALLING TRANS-RECEIVE BOARD ASSEMBLY) • TRANSMITS AND DETECTS VARIOUS SIGANALS TO PROCESS CALL CONNECTION.

  20. 3. TSW (TIME SWITCH) • MDXA (MUX/DEMUX BOARD ASSY.) -6NOs. • TSWA (TIME SW BOARD ASSY.) -2NOs. • TNDA (TIME SW N/W SYNC. & DISTRIBUTOR BOARD ASSY.) • –2NOs. • TSW PERFORMS TIME SLOT INTERCHANGE TO PROVIDE CALL PATH. • 4. MTU(MAGNETIC TAPE UNIT) • DATA STORAGE FROM DKU. • 5. I/O PORT/X.25 • PSAA (PORT SWITCHING ADAPTER BOARD ASSY.) -2NOs. • TWO PHYSICAL PORTS FOR ONLINE TRANSMISSION OF BILLING DATA.

  21. 6. DKU (DISK UNIT BLOCK) - POAO6 (DISK POWER SUPPLY CCT BOARD -2NOs. - POAO7 (DISK INTERFACE CCT BOARD) -2NOs. FOR RECORDING CHARGING DATA AND FOR DATA LOADING OF WLL SYSTEM SW PART. 7. RGPS( REDUNDANT GLOBAL POSITIONING SYSTEM ) -GPSU -R – 2UNITS RECEIVS CLOCK FROM GPS SATELLITE. CLOCKS AVAILABLE FOR USE ARE TOD, 10MHz AND 1PPS PULSE. 8. ASP (ACCESS SWITCHING PROCESSOR) -MPRA(MAIN PROCESSOR&REDUNDANCY CONTROL BOARD ASSY) -2NOs. - IPGA (INTER PROCESSOR COMM. & GLOBAL BUS CONTROL BOARD ASSY. -2NOs.

  22. MANAGES AND CONTROLS CALL RESOURCES FOR INTERWORKING BETWEEN AIR I/F AND PSTN INTERFACE. 9. GSP(GLOBAL SERVICE PROCESSOR) - PIHA (PP & IPC HARDWARE BOARD ASSY.) -2NO. PROVIDES ANNOUNCEMENT AND FUNCTIONS RELATED TO THE CONFERENCE CALLS IN THE R2/NO.7 SYSTEM. 10. OCP(OPERATION CONTROL PROCESSOR) - MPRA (MAIN PROCESSOR AND REDUNDANCY CONTROL BOARD ASSY. -2NOs. - IPGA (INTER PROCESSOR COMM. & GLOBAL BUS CONTROL BOARD ASSY) -2NOs. - IOXA (I/OX.25 I/F BOARD ASSY.) -2NOs. - MIFA (MASS STORAGE & FILE SYSTEM BD ASSY.) -2NOs. FUNCTIONS RELATED TO THE MTCE OF WLL SYSTEM AND CONTROLS THE AUX. MEMORY UNIT. NO. TRANSLATION FUNCTION, CALL ROUTING CONTROL, TRANSIT CALL PROCESSING ETC.

  23. WNIR (WLL N/W INTERFACE RACK) 11. DCI (DIGITAL CEPT INTERFACE) - ECIA-N/ETIA - 4+4 FOR 32E1 LINKS. (EXTENDED CEPT INTERFACE) 12. CSB (CDMA SELECTOR BANK) - SVEA (SELECTOR VOCODER & ECHO CANCELLER BD ASSY.) -16NOs. - SBPA (SELECTOR BANK PROCESSOR BD. ASSY.) -1NO. CONVERSION BETWEEN QCELP & PCM DATA. DCI/TSW I/F. CIN BLOCK I/F. 13. CIN (CDMA INTER NETWORKING) - CIRA (CDMA INTERNETWORKING ROUTING BD. ASSY.) -2NOs. - CINA (CDMA INTERNETWORKING NODE BD, ASSY.) -2NOs. - CIGA (CDMA INTERNETWORKING GATEWAY BD. ASSY.) -2NOs.

  24. CITA (CDMA INTERWORKING TRUNK BD. ASSY.) -2NOs. • CIN INTERFACES WITH BTS, CSB BLOCK,CCP BLOCK, TMP (WTFC) AND BSM. IT PROVIDES COMM. PATH FOR VOICE PKT & CONTROL PKT IN MOBILE COMM. USING CDMA. IT PROVIDES ALL PHYSICAL CONNECTIONS FOR CALL PROCESSING. • 14. TLSP (TIME SW & LOCAL SERVICE PROCESSOR) • PIHA (PERIPHERAL & I/F H/W BLOCK ASSY.) -10 Nos. • CONTROLS THE TIME SW AND THE LOCAL SERVICE I/F EQPT. DCIP CONTROLS THE DIGITAL TRUNKS FOR TRANSIT CALLS. • 15. WTFC (WLL TIMING & FREQUENCY CONTROL) • - WINA(WLL NETWORKING NODE BD. ASSY) • - WIRA (WLL NETWORKING ROUTING BD. ASSY) • - CDMA (CLOCK DISTRIBUTION & MGMT BD. ASSY.) • - BACA (BSS ALM COLLECTION BD ASSY.) • TMPA (TIMING MGMT PROCESSOR BD ASSY.)

  25. WTFC HAS A TIMING MODULE (TMPA & CDMA) FOR PROVIDING SYSTEM SYNCHRONIZATION AND CLOCK USING TOD AND SYNC SIGNALS PROVIDED FROM RGPS RECEIVER. 16. CCSP (CCS7 PROCESSOR) - SGBA (SS7 GLOBAL BUS I/F BD ASSY.) -1NO. - SMDA (SS7 MESSAGE HANDLING & ADMN BD ASSY.) -1NO. - STFA (SIGANALLING TRML FUNCTION BD ASSY.) -2NOs. PROVIDES CCS7 SIGANALLING. 17. CCP (CALL CONTROL PROCESSOR) - BIPA( BSC INTERNETWORKING PROCESSOA BD ASSY) -1NO. - BMPA (BSC MAIN PROCESSOR BD ASSY.) -1NO. MAIN PROCESSOR, PERFORMS CALL CONTROL FUNCTION SUCH AS CALL SETUP AND RELEASE REQUEST SENT FROM TRML, PAGING, SELECTOR ASSIGNMENT &RELEASE, MANAGES CALL STATUS INFORMATION, TRAFFIC CHL ADDRESS, CELL ID etc.

  26. MSIR( MOBILE STATION INTERFACE RACK) CSB (CDMA SELECTOR BANK) - SVEA (SELECTOR VOCODER & ECHO CANCELLER BD ASSY.) -16NOs. - SBPA (SELECTOR BANK PROCESSOR BD. ASSY.) -1NO. CONVERSION BETWEEN QCELP & PCM DATA. DCI/TSW I/F. CIN BLOCK I/F.

  27. BASE TRANS-RECEIVE SUBSYSTEM(BTS) IT IS LOCATED BETWEEN MS AND BSC. BTS PERFORMS CALL CONTROL AND MAINTENANCE FUNCTIONS CONCERNING MSs. IT GUIDES MSs TO RECOGNIZE THE BTS, ASSIGNS TRAFFIC CHLs UPON THE CALL REQUESTS AND OPENS CALL PATHS. BTS TYPES: - INDOOR TYPE UPTO 8 FA - OUTDOOR TYPE UPTO 4 FA (a) STANDARD 8FA/3SECTOR (b) COMPACT 8FA/3SECTOR (c) MICROCELL 1 FA/3SECTOR (d) PICOCELL 1 FA/1SECTOR

  28. BTS SPECIFICATIONS: BTS TYPE: STANDARD ( INDOOR) UPTO 8 FA/ 3 SECTORS TRAFFIC CHLS CAPACITY 8 K VOCODING - UPTO 40 CHLS PER SECTOR: 13 K VOCODING - UPTO 23 CHLS TRAFFIC HANDLING >9 ERLANG/SECTOR/FA BP =2% CAPACITY PER SECTOR: NO. OF FA PER BTS: UPTO 8 FA/ 3 SECTORS (1 FA = 1.25 MHz) NO. OF CHLS PER BOARD: 16 CHANNEL ELEMENTS NO. OF RECEIVER ANT. 2 EA/ SECTOR SECTORIZATION: OMNI, 3SECTORS

  29. FREQ. BAND: BTS - FSU 869 - 894 MHz FSU - BTS 824 - 849 MHz POWER REQUIREMENT: DC + 24V TEMPERATURE: 0 ~ 50 DEG. C RACK SIZE : 750mm(W)X650mm(D)X1886mm(H) TX FREQUENCY(MHz)= 0.03N+870 RX FREQUENCY(MHz)=0.03N+825 WHERE N=CHL NO.(1 TO 799)

  30. BTS RACKS BSCR BSRR BSDR BHI UDC BHI DUFA CCB CCB LNA CCB CCB CCB CCB LPA TCP CCB CCB LPA UDC UDC UDC GPSU-R LPA 1FA,2FA 1FA,2FA,3FA,4FA 1FA,2FA,3FA,4FA,5FA,6FA,7FA,8FA

  31. BHI(BACK HAUL INTERFACE) • CIRA (CDMA INTERNETWORKING ROUTING BD ASSY.) -2NOs. • CINA (CDMA INTERNETWORKING NODE BD ASSY.) -4NOs. • CITA (CDMA INTERNETWORKING TRUNK BD ASSY.) -2NOs. • PROVIDES COMMUNICATION PATH OF VOICE PKTS & CONTROL PKTS WITHIN THE BTS AND B/W BSC & BTS. • CCB (CDMA CHL BANK) • - DCPA (DIGITAL CHL PROCESSOR BD ASSY.) -2NOs. • - MCPA (MULTI CHL PROCESSING BD ASSY.) -8NOs. • - BDCA (BB DISTRIBUTION & COMBINING BD ASSY.) -2NOs. • - BSCA (BASE STN SECTOR CONVERSION BD ASSY.) -4NOs. • CCB PROCESSES CDMA CHANNELS AND PERFORMS DIGITAL & ANALOGUE SIGNAL PROCESSING FOR IS 95A CALLS OF EACH CHL AND I/F WITH RF BLOCK.

  32. TCP ( TIME & FREQENCY CONTROL PROCESSOR) • TFPA (TIMING & FREQUENCY PROCESSOR BD ASSY.) -2NOs. • TRMA (TIMING REFERENCE MASTER BD ASSY.) -2NOs. • BACA (BSS ALARM COLLECTION BD ASSY.) -2NOs. • BSPA: CONTROLS CALL PROCESSING AND STATUS MGMT OF BTS. • PERFORMS THE GENERAL AND MGMT OF THE FULL FUNCTION OF THE BTS HARDWARE & SOFTWARE. • UDC (UP DOWN CONVERTER) • RFPA (RF PROCESSOR BD ASSY.) -2NOs. • PVMA (POWER & VSWR MONITOR BD ASSY.) -1NO. • PCUA (PATH CONTROL UNIT ASSY.) -1NO. • UDCA (UP DOWN CONVERTORBD ASSY.) -6NOs. • DUFA (DUPLEXER FRONT END BLOCK) -3NOs.

  33. PHYSICAL CHANNELS:- STANDARD BTS- 128CHLs/3SECTOR/FA COMPACT BTS- 100CHLs/3SECTOR/FA MICROCELL BTS- 60CHLs/FA PICOCELL BTS- 20CHLs/FA BTS POWER REQUIREMENTS:- 6MODULE DC-DC CON. 1 4 DC-DC CON. +24V 48V FROM BTY/SMPS POWER PLANT 2 5 3 6 24V/300A

  34. 55A AT 24V OR 110A AT 48V 100A AT 48V OR 200A AT 24V 143A AT 48V OR 286A AT 24V 1FA 2FA 3FA

  35. FIXED WIRELESS TERMINAL SUPPLIED ITEMS WITH SUBS. UNIT ARE 1. FWT-200F 2. DIPOLE ANTENNA GAIN-2dbi POL. -VER. 3. BATTERY INTERNAL 4. AC/DC ADOPTER 100V -250V AC 5. PATCH PANEL ANTENNA EXTERNAL ANTENNA, DIRECTIONAL ANT., GAIN-8dbi CBLE LENGTH= 4M MAX. CABLE LOSS -.5db/M 6. IN FWT - NETWORK INTERFACE MODULE - FAX MODEM - RF MODULE

  36. 7. THREE PORTS - TELEPHONE PORT - PC PORT - FAX PORT 8. BATTERY TYPE: Ni -MH CAPACITY: 2.1 AH VOLTAGE: 8.4V(7CELL) CHARGING TIME: 10 -15 HRS CURRENT CONSUMPTION: SLEEP MODE = 50-150mA IDLE MODE = 150-200mA TALK MODE = 600-700mA 9. TRANS. POWER 27-34 dbm RECEIVE POWER -104 dbm THRESHOLD

  37. TYPES OF FWT:- 1. SINGLE SUBSCRIBER UNIT(SSU) A FIXED UNIT WITH A STANDARD WIRELINE INTERFACE. - VOICE PORT (RJ 11) - COM(PC) PORT RS232 - G3 FAX PORT (RJ 11) 2. MULTI-SUBSCRIBER UNIT(MSU) A FIXED UNIT WITH MULTIPLE SUBSCRIBER INTERFACE. PROVIDES 32 SUBS INTERFACES USING 4RF.

  38. SUPLIMENTARY SERVICES SUPPORTED BY FWT - AUTOMATIC ALARM SERVICES. - CALLING WAITING - CALL DIVERTING -BUSY, NO ANSWER OR UNCONDITIONAL. - SUBSCRIBER AS INCOMING ONLY - SUBSCRIBER AS OUTGOING ONLY - DYNAMIC LOCK - 3WAY CONFERENCING. - ABBREVIATED DIALLING - MALLACIOUS CALL - INTERCEPTION CALL - PRIORITY LINE

  39. BASE STATION MANAGER (BSM) FUNCTION:- - SUBSCRIBER MANAGEMENT - MAN MACHINE INTERFACE - OPERATION, ADMINISTRATION & MAINTENANCE - CONFIGURATION MANAGEMENT - PERFORMANCE MANAGEMENT INTERFACE:- - INTERFACE TO BSC WITH RS422 - NETWORK PROTOCOL- TCP/IP SPECIFICATION:- - SUN MICROSYSTEMS ULTRA5 - GUI: X-WINDOW MOTIF 2.X

  40. THANK YOU

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