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ORA000003 CDMA2000 Principle

ORA000003 CDMA2000 Principle. 1.2. Objectives. After this presentation, you will be familiar with: the development of mobile communication system the structure of CDMA2000 network the number planning in CDMA2000 network. Course Organization. Chapter 1: Introduction.

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ORA000003 CDMA2000 Principle

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  1. ORA000003 CDMA2000 Principle 1.2

  2. Objectives • After this presentation, you will be familiar with: • the development of mobile communication system • the structure of CDMA2000 network • the number planning in CDMA2000 network Security Level: Internal

  3. Course Organization Chapter 1: Introduction Chapter 2: CDMA Techniques & Technologies Chapter 3: CDMA Core Networks Chapter 4: CDMA Number Planning Security Level: Internal

  4. Development of Mobile Communications Introduction 1st Generation 1980s (analog) 2nd Generation 1990s (digital) 3rd Generation current (digital) GSM UMTS WCDMA AMPS CDMA IS95 TACS CDMA 2000 Voice to Broadband Analog to Digital NMT TDMA IS-136 TD-SCDMA OTHERS PDC • 3G provides: • Complete integrated service solutions • High bandwidth • Unified air interface • Best spectral efficiency and • ……………… a step towards PCS Security Level: Internal

  5. Power Frequency Time Power Frequency Time Power Frequency Time Transmission Techniques Introduction CDMA Traffic channels:different users are assigned unique code and transmitted over the same frequency band, for example, WCDMA and CDMA2000 TDMA Traffic channels: different time slots are allocated to different users, for example, DAMPS and GSM FDMA User User User User User Traffic channels: different frequency bands are allocated to different users,for example, AMPS and TACS User Security Level: Internal

  6. 3G Objectives Introduction 3G is developed to achieve: • Universal frequency band for standard and seamless global coverage • High quality of service with complete security and reliability • Easy and smoothly transition from 2G to 3G, compatible with 2G • Provide multimedia services, with the rates: • Vehicle environment: 144kbps • Walking environment: 384kbps • Indoor environment: 2Mbps Security Level: Internal

  7. Standards for 3G Introduction CDMA2000 3GPP2 FDD mode WCDMA TD-SCDMA 3G system 3GPP CWTS FDD mode TDD mode Security Level: Internal

  8. IS95A 9.6kbps CDMA2000 3X IS95A 115.2kbps CDMA2000 1X EV 1X EV-DO 1X EV-DV Development of CDMA Introduction • Higher spectrum efficiency and network capacity • Higher packet data rate and more diversified services • Smooth transit to 3G • CDMA2000 307.2kbps • Heavier voice service capacity ; • Longer period of standby time 1995 1998 2000 2003 Security Level: Internal

  9. CDMA2000 1X Network Structure Introduction A1(Signaling) A2(Traffic) Abis A3(Signaling & Traffic) A7(Singaling) A11(Signaling) A10(Traffic) MS: Mobile Station BTS: Base Transceiver Station BSC: Base Station Controller MSC: Mobile Switching Center HLR :Home Location Register VLR: Visitor Location Register PCF: Packet data Control FunctionPDSN: Packet Data Service Node HA: Home Agent FA: Foreign Agent SCP: Service Control Point Radius: Remote Authentication Dial-in User Service Security Level: Internal

  10. Course Organization Chapter 1: Introduction Chapter 2: CDMA Techniques & Technologies Chapter 3: CDMA Core Networks Chapter 4: CDMA Number Planning Security Level: Internal

  11. Spreading and De-spreading CDMA Techniques & Technologies The improvement of time-domain information rate means that the bandwidth of spectrum-domain information is spread. S（f） S（f） information information f0 f f0 f The spectrum before spreading The spectrum after spreading S（f） S（f） information Interference/noise Interference/noise information f0 f f0 f The spectrum before despreading The spectrum after despreading pulse interference information White noise S(f) is the energy density. Security Level: Internal

  12. t The Principle of RAKE Receiver CDMA Techniques & Technologies Transmission signal S(t) RAKE Receiver- multi-path fading Security Level: Internal

  13. Correlator 1 Correlator 2 Combiner The combined signal Receive set Correlator 3 Calculate the time delay and signal strength Searcher correlator s(t) s(t) t t The Principle of RAKE Receiver CDMA Techniques & Technologies RAKE antennas help to overcome on the multi-path fading and enhance the receive performance of the system Security Level: Internal

  14. Handoff CDMA Techniques & Technologies Soft handoff It is a process of establishing a link with a target sector before breaking the link with the serving sector Softer handoff Like the soft handoff, but the handoff is occurred between multi-sectors in the same base station Hard handoff Hard handoff occurs when the two sectors are not synchronized or are not on the same frequency. Interruption in voice or data communication occurs but this interruption does not effect the user communication Security Level: Internal

  15. Power received from a single sector Combine all the power from each sector Soft/Softer Handoff CDMA Techniques & Technologies • Multi-path combination in the BSC during soft handoff • Multi-path combination in the BTS during softer handoffs Security Level: Internal

  16. Course Contents Chapter 1 Introduction Chapter 2 CDMA Techniques & Technologies Chapter 3 CDMA Core Network Chapter 4 CDMA Number Planning Security Level: Internal

  17. T 9 Di EIR IP HLR IP ISDN T 3 F T2 T 5 T8 T1 MSC SCP SCP SSP PSTN E Ai Um A Di MS BS MSC ISDN Ai C B H D AC HLR VLR Q N G SME SME MC MC VLR M M M A typical CDMA Network CDMA Core Network Security Level: Internal

  18. CDMA Interfaces CDMA Core Network Mobile Customer Service Center MC/VM PSTN/ISDN IS-41 Other MSCs SS7 SS7 IS-41 SDH SS7 Other PLMNs BSC MSC/SSP/VLR GMSC/SSP TCP/IP IOS4.0 IS-41 BTS IS95---- CDMA2000 OMC IS-41 INTERNET SCP MS IS-41 BTS HLR/AC STP MSC: Mobile-service Switching Center BSC: Base Station Controller MC: Short Message Center HLR: Home Location Register BTS: Base Transceiver Station VM: Voice Mailbox VLR: Visitor Location Register OMC: Operation & Maintenance Center AC: Authentication Center SCP: Service Control Point Security Level: Internal

  19. CDMA Services CDMA Core Network • Schools, groups • Universal account number • Sectorized and time shared charge • Broadcast news • Businesses, enterprises • Mobile virtual private network • Mobile high-speed network access • Advertising services • Free phone • Family • Familiarity number • Life & amusement • Individuals • Individualized services • Privacy Security Level: Internal

  20. CDMA Feature Services---Example 1 CDMA Core Network Ruyi lock Features: a mobile phone user can dial the access code and input the PIN code to lock/unlock his mobile phone by using any fixed telephone instead of registering and paying at a business hall. Where is my mobile phone? It is lucky to have Ruyi lock! Why can’t I make a call the moment I picked it up? Security Level: Internal

  21. CDMA Feature Services---Example 2 CDMA Core Network You can register for a forwarding service on your own FOLLOW ME Features: a user can activate call forwarding of his/he MS from any phone to ensure that any incoming call of a mobile phone user will not be lost. I forgot to bring my mobile phone, but I will have an important customer to meet this afternoon. What should I do? Security Level: Internal

  22. CDMA Feature Services---Example 3 CDMA Core Network Friendshipcom Features: After a called user subscribes for this service, the system requires password to caller. A call is accomplished only if the password is correct. Otherwise, the call will be rejected or transferred. He can no longer reach me! Why? Ask me to input a password? Does that guy still bother you recently? Security Level: Internal

  23. CDMA Feature Services---Example 4 CDMA Core Network LOOK FOR service Feature 1: When a user makes a call to an intra-group user, the terminals of all intra-group users ring in-turn or simultaneously until there is a reply. Intra-group user Security Level: Internal

  24. CDMA2000---Data Services CDMA Core Network Video Streaming 2,000 Still Imaging Remote Medical Service 384 High-quality videoconference Audio Streaming Data rate in Kbps Sports, news and weather report on demand 144 Text Messaging Low-quality videoconference 128 Voice Mobile TV 64 Image Electronic newspaper Video Surveillance, Video Mail, Travel Voice Mail JPEG Still Photos Singing room 32 Electronic book E-commerce Fax E-Mail 9.6 Data Telephone (Voice) Mobile Radio 0 Weather, transportation, news, sports and securities Security Level: Internal

  25. Locating Services CDMA Core Network 3GPP2 uses the following 3 standards for MS location: • GPS-aided measurement • Accuracy: suburbs---10m. City zone---30~70m. Indoor --unable to locate • Response time: 3~10s • Measurement of base station pilot phase • Accuracy: 50~200m • Response time: 3~6s • Locating of a cell ID • Accuracy: depends on the size of a cell • Response time: within 3s Security Level: Internal

  26. VVVROOM ! Locating Services CDMA Core Network • The system transfers the alarm to the nearest alarm processing center based on the location. • An emergency button can be set on a user’s mobile phone to so that an alarm can be reported without any conversation or delay. 110! Bandit! Security Level: Internal

  27. Equal Access of Toll Calls CDMA Core Network HLR • Help mobile operators to absorb large quantities of toll services • Users subscribe to select toll operators to ensure quality of service. • Enable users to save toll call charge (premium strategy) • Make an IP toll call without dialing a preamble CDMA/ INTERNET PSTN Toll route after subscription MSC/GMSC Original toll route Operators who subscribe for toll services Users who subscribe for toll services Security Level: Internal

  28. Course Contents Chapter 1: Introduction Chapter 2: CDMA Techniques & Technologies Chapter 3: CDMA Core Network Chapter 4: CDMA Number Planning Security Level: Internal

  29. Definition of Coverage Areas CDMA Number Planning Service area PLMN area MSC area Location area Cell area Sector area Security Level: Internal

  30. Parameters Involved CDMA Number Planning In a CDMA system, the following parameters are defined to identify a user and his location: • MIN/IMSI • MDN • ESN • TLDN • SID/NID • LAI • GCI • SIN • SSN Security Level: Internal

  31. MIN/IMSI CDMA Number Planning Not more than 15 digits 3 digits 2 digits MSIN MCC MNC NMSI IMSI Mobile subscriber identity/international mobile subscriber identity For example, 0907550001/460030907550001 Security Level: Internal

  32. MDN CDMA Number Planning + + + CC MAC H H H H ABCD 0 1 2 3 International mobile subscriber DN National valid mobile subscriber number Mobile directory number For example, 8613307550001 Security Level: Internal

  33. ESN CDMA Number Planning A unique Electronic Serial Number (ESN) is used to identify single MS. An ESN includes 32 bits and has the following structure: 31......24 23......18 17......0 bit Manufacturer’s number retained equipment SN For example, FD 03 78 0A (the 10th Motorola 378 mobile phone) The equipment serial number is allocated by a manufacturer. Security Level: Internal

  34. CC MAC 44 H H H + ABC + + + 0 1 2 TLDN CDMA Number Planning Temporary local directory number For example, 8613344755001 Security Level: Internal

  35. SID/NID CDMA Number Planning MSCID (Exchange Identity) = System Identity (SID) + Exchange number (SWIN) is used to represent a certain set of equipment in an NSS network. For example, Unicom CDMA Shenzhen MSC is labeled as 3755+01 Security Level: Internal

  36. Location Area Identity (LAI) CDMA Number Planning • PAGING message is broadcast within a local area, the size of which depends on traffic, paging bearer capability, signaling flow , etc. • Format: MCC+MNC+LAC • MCC: Mobile Country Code, 3 digits. For example, China is 460. • MNC: Mobile Network Code, 2 digits. For example, the MNC of Unicom is 03. • LAC: Location Area Code, a 2-byte-long hexadecimal BCD code. 0000 cannot be used with FFFE. • For example, 460030100 Security Level: Internal

  37. Global Cell Identity (GCI) CDMA Number Planning • The unique ID of a cell in PLMN • Format: LAI+CI • CI: Cell Identity, a 2-byte-long hexadecimal BCD code, pre defined by the engineering department. The first 3 digits and the last digit represent the base station number and the sector number respectively. For an omni-directional site, the last digit of CI is 0. • For example, 4600301001230 shows base station number 123 contains an omni-directional site Security Level: Internal

  38. Sender Identification Number (SIN) CDMA Number Planning MSC number The MSC number stipulated by Unicom is 460 + 03 + 09 +H0H1H2H3 + 1000. HLR number The HLR number stipulated by Unicom is 460 + 03 + 09 + H0H1H2H3 + 0000. SMC number The SMC number stipulated by Unicom is 460 + 03 + 09 + H0H1H2H3 + 2000. SCP number The SCP number stipulated by Unicom is 460 + 03 + 09 + H0H1H2H3 + 3000. 09 is used by China Unicom, this number is distributed uniquely in the world. Security Level: Internal

  39. Sub-System Number (SSN) CDMA Number Planning • SSN of MSC: 8 • SSN of VLR: 7 • SSN of HLR: 6 • SSN of AC: 10 • SSN of SMC: EE • SSN of SCP: EF • SSN of A interface: FE/FC • SSN of SCCP management: 1 Security Level: Internal

  40. Summary • Brief Development History of Mobile Communication • Analog--digital--code division • Objectives of 3G and comparison of 3 systems • CDMA network structure and Technical features • Service provided in CDMA network • Number planning in CDMA Network Security Level: Internal

  41. Thank you Security Level: Internal

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