document on map service flow

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MAP Service Flow of 2GV0702

ZTE UniversityMobile-MSS/WDSS Group


OUnderstand Registration /Deregistration FlowOUnderstand Calling Service FlowOUnderstand SMS Service FlowOUnderstand Authentication Flow

Course Objectives


Agenda

Registration/Deregistration Flow p Call Service Flowp SMS Service Flowp Authentication Flow


Mobile station registration

MS1 MSC/VLR1 MSC/VLR2HLR

Location Update Request

REGNOT_Req

REGNOT_Resp

REGCANC_Resp

REGCANC_Req

Location Update Accept


MS MSC/VLR HLR

POWER OFF

MSINACT_Req

MSINACT_Resp

(DEREG)

MS De-registration


MS MSC/VLR HLR

MSINACT_Req

MSINACT_Resp

(Inactive)

MS Inactive


Agenda

p Registration/Deregistration Flow Call Service Flowp SMS Service Flowp Authentication Flow


MS1 MSC/VLR1 HLR

MS2

Calling

LOCREQ_Req

LOCREQ_Resp

Conversation

Paging

Connect

MS to MS (in the Same MSC)


MS1 MSC/VLR1 MSC/VLR2HLR

MS2

Calling

LOCREQ_Req

LOCREQ_Resp

ROUTREQ_Req

ROUTREQ_Resp

IAM

ACM

ANM

MS to MS (Different MSC)

Conversation

Paging

Connect

(MIN)

(TLDN)(TLDN)

(TLDN)


Agenda

p Registration/Deregistration Flow p Call Service Flow SMS Service Flowp Authentication Flow


SMS MO


SMS MT


SMS MO+MT


SMS Notification


Agenda

p Registration/Deregistration Flow p Call Service Flowp SMS Service Flow Authentication Flow


Security Management

Authentication parameters A-KEYMINESNSSD and CAVE algorithm

This function is designed to protect legal subscribers and prevent phony subscribers from "invasion". Each registered subscriber has been given a subscriber number, mobile station identification number (MIN) and an authentication key (A-KEY). The MIN and A-KEY are written into the subscriber's mobile phone. By means of SSD updating, a Shared Secret Data (SSD), which is to be used future authentication and encryption algorithm calculation, is generated in both the AUC and the subscriber's mobile phone to be used for. If the VLR supports SSD sharing, this SSD is also saved in the VLR.

The 128-bit SSD is divided into two parts, 64-bit SSD_A for authentication calculation and the 64-bit SSD_B for the encryption calculation respectively.


Function of A-key & SSD

RAND32

ESN32

SSD_A_NEW64

MIN124

Auth_SignatureProcedure

AUTHR18

RAND_CALLENGE ESN AUTH_DATA SSD_AUTH

RANDSSD56

ESN32

A-Key64

SSD_GenerationProcedure

SSD_A_NEW64

SSD_B_NEW64

SSD generation algorithm Authentication algorithm


Global Challenge


Thanks Thanks Thanks Thanks Questions are welcome Questions are welcome

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