basic knowledge of cdma

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Basic KnowledgeV0701

ZTE UniversityMobile-MSS/WDSS Group


Understand CDMA System Architecture

Understand Numbering Plan

Course Objectives


Agenda

Architecture of CDMA system

Numbering Plan


MSC/SSP

HLR

VLR

AUCMC

BSCBTS

MC

MS MSC PSTN

BSS

MSS

A B

C D

HNM

Q

Abis

Um E Ai

Architecture of CDMA system (2G)


Base Station Sub-system

• Function：It provides trunks between wireless part and fixed part of PLMN network.

• ---BSCBSC performs the controlling function and management.

• ---BTSBTS is in charge of wireless transmission.


Mobile Switching Sub-system

• Function：– CDMA switching function – Manage mobile subscriber data – Manage database for mobile service– Interface between CDMA network and other network

(such as PSTN, other PLMN etc.).• It includes 5 function units:

---MSC ---VLR---HLR ---AUC---SC


Agenda

Architecture of CDMA system

Numbering Plan


• E.164:The international public telecommunication numbering plan

• E.212:International identification plan for mobile terminals and mobile users

Number Plan Introduction


MDN=CC+MAC+SN

• The MDN ( Mobile Directory Number ) is the standard international telephone number used to identify a given subscriber. It consists of a CC (Country Code), an MAC (Mobile Access Code ) and an SN (Subscriber Number).

• The number is based on the ITU-T E.164 standard.

MDN Number


• The IMSI ( International Mobile Subscriber Identity ) is a unique identifier allocated to each mobile subscriber. It consists of a MCC (Mobile Country Code), a MNC(Mobile Network Code) and a MSIN (Mobile Station Identification Number).

• The number is based on the ITU-T E.212 standard.

IMSI Number


• MSCIN/VLRIN/HLRIN/SCIN is used to identify the networking entities and realize international routing of SS7 messages.

• In CDMA networking, MSCIN/VLRIN/HLRIN/SCIN is based on the ITU-T E.212 standard.

MSCIN/VLRIN/HLRIN/SCIN Number


• The TLDN (Temporary Local Directory Number ) is a temporary number that is allocated by the CDMA VLR and is used for routing a call for a mobile subscriber.

TLDN Number

MSC/VLR1 MSC/VLR2

HLR/AUC

1 MDN 23 TLDN4 TLDN

5 TLDN


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basic knowledge of cdma

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