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MPT1327 Trunking Systems Presentation

MPT1327 Trunking Systems Presentation. Today’s Wireless World. System. Type. Technology. Evolution. Cellular. AMPS FDMA GSM TDMA PCS (NPCS, BPCS) CDMA. Paging. One-Way POCSAG One-Way FLEX Two-Way ReFLEX Two-Way InFLEXion. LMR: PMR, PAMR. Conventional FM/CTCSS

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MPT1327 Trunking Systems Presentation

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  1. MPT1327 Trunking Systems Presentation

  2. Today’s Wireless World... System Type Technology Evolution Cellular AMPS FDMA GSM TDMA PCS (NPCS, BPCS) CDMA Paging One-Way POCSAG One-Way FLEX Two-Way ReFLEX Two-Way InFLEXion LMR: PMR, PAMR Conventional FM/CTCSS Conventional w/signaling FMCTCSS/Select V/MDC1200 Analog Trunking FM/MPT1327, Smartnet, LTR Digital Trunking TDMA/TETRA, APCO, ASTRO, iDEN, EDACS Engineering Department

  3. Market Requirements &Costs One-to-many Telephone Talkaround Friendly to Use Ruggedness • Construction X X X X • Security X X X X X • Manufacturing X X X X • Transportation X X • Taxis X X _________________________________________________________________________ Cellular N/A Excellent No Moderate Average iDEN Good Very Good Limited Moderate Good Analog MPT Excellent Good Yes Simple Excellent Purchase Cost Ave. Monthly Cost Yearly Cost • Cellular $0 $125 $1500 • iDEN $199 $76 $912 • MPT $600 $25 $300 Note: Analog MPT Radios last longer Engineering Department

  4. Telephony was first! TRUNKS EXCHANGE EXCHANGE Engineering Department

  5. Conventional Radio System Individual Logic Repeaters Mobiles Tone Panel Channel 1 Blocked& Monitoring IDLE Tone Panel Channel 2 Channel 3 Tone Panel Blocked & Monitoring Channel 4 Tone Panel Engineering Department

  6. Land Mobile Radio(LMR) Technology Evolution Smartnet • The 80ths Trunking Conventional LMR LTR • UNEFFICIENT MPT1327: an open standard: LMR = PMR + PAMR

  7. Trunked Radio System Networked Logic Mobiles Repeaters Quick Access!<300 ms Control channel Traffic channel 1 Trunking Logic Traffic channel 2 Good Privacy! Traffic channel 3 Engineering Department

  8. Concept of Radio Trunking Automatic sharing of a limited number of Trunks (Communication Channels) among a large number of users, where any user has access to any free Trunk (channel) The Fundamental Principle Improve efficiency using channels and Radio spectrum Engineering Department

  9. Analog MPT Systems shows advantages compared to... • ConventionalSystems, …………………….in efficiency • CellularSystems, …………..in possibilities of managing field operation of fleets, organizations, groups and….costs • Digital Trunking Systems,… in simplicity and …..cost Engineering Department

  10. Average statistics: (capacity grows with the number of Channels) • 1 Non Trunked Channel 15-40 Radios • 5 Channel Trunked System 260 total (52 R/Can) • 10 Channel Trunked System 700 total (70 RU/Can) • 15 Channel Trunked System 1275 total (85 R/Can) • 20-Channel Trunked System 1900 total (95 R/Can) Engineering Department

  11. MPT1327 Protocol General Characteristics Engineering Department

  12. History of the MPT1327 Protocol • Protocols of the MPT1327 family : • MPT1317 Data Bearer Specification 1981 • MPT1318 Engineering/Statistics 1986 • MPT1327 Signaling Standard 1988 • MPT1331 Code of practice for radio site engineering 1987 • MPT 1343 Air Interface Specification 1987 • MPT1347 Radio Interface Specification 1988 • MPT1352 Performance/Test Specification 1991 • MPT Evolution: • 1985_U.K DTI allocates BANDIII (175-225MHz) to land mobile and mandates all systems to be trunked and conform to MPT1327 • 1988_MPT1327 Specifications is published • 1989_some European countries begin to adopt MPT1327 • 1991_Germany, Switzerland and Holland Systems go on-line • 1993_over 110,000 subscribers in service • Today_millions of MPT users all over the world Engineering Department

  13. MPT1327 is an Open Protocol • Proprietary Protocol: • little or no choice of manufacturer • no competition, higher prices • availability via single source • practically no access to technology • There are more than 20 manufacturers of MPT1327 Radios : Motorola, Icom, Yaesu, Kenwood, Kavicomm, Nokia, Alcatel, Tait, OTE, Maxon, Teltronik, etc. • There are more than 10 manufacturers of Infrastructure MPT1327:Fylde, Zetron, Nokia, R&S, Alcatel, Tait, OTE, Teltronik, etc. Engineering Department

  14. Digital Control Channel sends information of synchronization to the Radios Bits 1 7 13 1 3 23 16 0 PFX General Field Parity IDENT 1 1 CAT 64 Bits CCSC LET Preamble SYNC ADD 1 ADD 2 CCSC CCSC ADD 2 64 Bits Preamble Parity Check 0 SYS 1 1 0 0 0 1 0 0 1 1 0 1 0 1 1 1 CCS 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 Bits 1 15 16 16 16 SYS - System Identity Code. (Note any value of SYS that results in a similar value as the SYNC code is not permitted.) CCS - Codeword Completion Sequence, a value which is chosen to form the parity check bits Engineering Department MPT 1327 Control Channel Transmitted Sequence

  15. Control channel is DIGITAL Traffic channels are ANALOG The modulation of the Control Channel is FFSK (MSK)1200bps 1200 Hz Binary bit 1 1800 Hz Binary bit 0 1200 Baud Data speed. Binary Binary Binary Binary Binary 1 1 0 0 1 Continuous Modulation. Engineering Department

  16. Random access protocol, which is based on slotted ALOHA, is used to avoid clashing between radios Control Channel Transmit Sequence ALOHA ALOHA ALOHA AHOY ALOHA GTC ALOHA ALOHA ALOHA ALOHA 1 1 1 2 1 1 1 1 1 1 Control Channel Receive Sequence RQS ACK 1 2 Traffic Speech Period CLEAR Channel TSC to Radios Message P 1 P 2 Engineering Department

  17. MPT1327TrunkingSystem Services Engineering Department

  18. Systems MPT1327 offers similar services to the more sophisticated systems... • Speech and Data Calls • Calls to/from PSTN/PABX • Selective Calls, Individual & Groups • Roaming • Calls with different priority levels • Late Entry Group Calls • Over the air Dynamic Regrouping • Short Data Messages, Numeric & Alphanumeric • Semi-duplex Data Transmission • Divert Calls • Electronic Serial Number Verification (ESN) • Last Number Redial • Shortform Dialing • Programmable dedicated call button • Caller “ID” Engineering Department

  19. 20 23 “23#” Normal Priority “*8*23#” High Priority “*9*23#” Emergency (with or without Channel Preempt) Individual Call Group 91 Group 91 MPT System Engineering Department

  20. 21 20 23 “91#” Group Call Group 91 Group 91 Group 91 MPT System Engineering Department

  21. 21 20 23 “91#” Broadcast Call Group 91 Group 91 Group 91 MPT System Engineering Department

  22. Dynamic Regrouping using CORDS, MAP27 connection to the mobile & Short Data Messages in the CC 23 27 31 33 23 27 31 33 before Note: CC= Canal de Control CT= Canal de Traffic Group 91 Group 92 after Group 93 (temporal) MPT System CORDS (Condor) Engineering Department

  23. 20 21 “91#” “21#” Multisite Call : individual & group Group 91 Group 91 MPT Site MPT Site Engineering Department

  24. 20 PSTN Call 3240123 “03240123” MPT System PSTN Engineering Department

  25. 20 PABX Call 4312 MPT System PABX 4420 “84312” 4856 Engineering Department

  26. 44 Roaming: change of area coverage from one site to another Overlapping Zone Engineering Department

  27. 44 • Hunting & acquisition: • normal • comprehensive • background • preferential • home channel Roaming: Hunting & acquisition Overlapping Zone Engineering Department

  28. C B A F D G E J Instruction “Vote Now” Engineering Department

  29. 23 Individual Validation of a radio before the call is established Habilitado 20 No Habilitado 23 Group 91 20 Group 91 MPT System “23#” Normal Priority “*8*23#” High Priority “*9*23#” Emergency (with or without channel preempt) Engineering Department

  30. 44 44 Verification of the Electronic Serial Number (ESN) before allow the Registration of a radio “002/07/072212” Overlapping Zone “002/07/084492” Engineering Department

  31. 44 20 “355044#” INTER-FLEET Call Prefix No. 201 Fleet No. 3550 Prefix No. 201 Fleet No. 2001 MPT System Engineering Department

  32. INTER-PREFIX Call Prefix No. 203 Fleet No. 3550 44 Prefix No. 201 Fleet No. 2001 20 “203355044#” MPT System Engineering Department

  33. Preprogrammed alphanumeric messages typically up to 10 different messages Implementation: radio keypad and Short Data Messages (STATUS) in the CC Note: CC= Control Cannel TC= Traffic Cannel 44 20 “44S03#” MPT System “Come back to the shop” Engineering Department

  34. CMC MPT System Preprogrammed Alphanumeric Messages up to 31 different messages Implementation: external keypad connected to the mobile&SDM(Status)in the CC Note: CC= Control Cannel TC= Traffic Cannel 44 20 Keypad 1 2 3 4 5 6 7 8 9 “On Duty” S 0 # “44S13#” Engineering Department

  35. 20 Numeric Messages packages of up to 23-25 characters Implementation: radio keypad & Short Data Messages in the CC Note: CC= Control Cannel TC= Traffic Cannel 44 “18003240123” “44D18003240123” MPT System Engineering Department

  36. Alphanumeric Messages (text) (packages of up to 23-25 characters) Implementation: CORDS, MAP27 I/F to the mobile & SDM in the CC Note: CC= Control Cannel TC= Traffic Cannel 44 20 “ Meeting postponed to 2pm ” “ Meeting postponed to 2pm ” MPT System CORDS (Condor) Engineering Department

  37. CMC CMC Data Transmission (semi-duplex) Implementation: terminal, CMC& MAP27 I/F to the mobile, Data in the TC Note: CC= Control Cannel TC= Traffic Cannel CMC= MAP27 Modem (Condor) 44 20 MPT System *31*44# ... Send file: users.dat Receive file: users.dat Speeds: 1200-4800 bps PCPLUS Software (or similar) Engineering Department

  38. Flexible programmability User per time and day of the week. Engineering Department

  39. Flexible Control Parameters programmability per time and day of the week. Engineering Department

  40. Flexible Control Parameters programmability per time and day of the week…………cont Engineering Department

  41. Logging of all Events Engineering Department

  42. MPT1318 Statistics Engineering Department

  43. Vote Now Programming Engineering Department

  44. In-depth Remote Monitoring and Diagnostic capability Engineering Department

  45. In-depth Remote Monitoring and Diagnostic capability……cont Engineering Department

  46. In-depth Remote Monitoring and Diagnostic capability…cont Engineering Department

  47. In-depth Remote Monitoring and Diagnostic capability….cont Engineering Department

  48. In-depth Remote Monitoring and Diagnostic capability….cont Engineering Department

  49. In-depth Remote Monitoring and Diagnostic capability….cont Engineering Department

  50. Flexible Organization of the Fleets FLEETA 2 NRO 2021 PREFIX_201 USER A PREFIX_202 USER B FLEETA 1 NRO 2001 FLEETA 1 NRO 2001 GROUP 90 SUBFLEETA: 20-29 GROUP 91 SUBFLEETA: 30-39 GROUP 90 SUBFLEETA: 20-29 GROUP 90 SUBFLEETA: 20-29 UN 20 (20-39, 90,91) UN 21 (20-29, 90) . . . UN 29 (20-29, 90) UN 30 (20-39, 90,91) UN 31 (30-39, 91) . . . UN 39 (30-39, 91) UN 20 (20-39, 90,91) UN 21 (20-29, 90) . . . UN 29 (20-29, 90) UN 20 (20-39, 90,91) UN 21 (20-29, 90) . . . UN 29 (20-29, 90) Engineering Department

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