gprs protocols

8/2/2019 GPRS Protocols

1/16

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2/16

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Relay

GTP

MOBILE STATION(MS)

GTP

LL C

GSM RF

Um Gb Gi

L1bisGSM RF

NetworkService

Relay

BSSGP

LL CTC P

UDP /

SCCP

IP

TC P

UDP /

IP / X.25

SNDCP

(GGSN)(BSS) (SGSN)

Application

RelayRLC

MAC

RLC

MAC

SNDCP

BSSG P IP

NetworkService

NetworkService L2

L1bis L1

IP / X.25

L1

L2

Gn

Relay

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3/16

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Transport

Network

Data Link

GPRS

GMS/CDMA

Application

INAP

Session

Presentation

VLR

IS41/MAP HLR

AUC

EIR

DTAPB-ISUP

ISUP

DUP

SSMMRR

CM/CCSMS

SNDCP

BSSMAP

SMS

GMM

Physical

TCAPTUP

BTSMBSSAP

SCCP

NM

V5

GTP

BSSGP

MTP1

MTP2

MTP3

NS-Network

LAPv5

From LAPD

From UDPTo IP

To X.25

FromFrame Relay

V5 Link Control

V5 PSTN

V5 Control

V5 Protection

LLC


4/16

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8 7 6 5 4 3 2 1 Octet

PDU type 1

Information elements 2-n

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5/16

16

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Information element ID (IEI) 1

Length indicator 2

Information element value 3

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6/16

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PDU type 1

Information elements 2

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7/16

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8/16

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9/16

*73

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Version Reserved LFN

Message type 1

Length 2

Sequence number 3

Flow label 4

LLC frame number 5

x x x x x x x FN 6

Reserved

TID

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10/16

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11/16

*73

8 7 6 5 4 3 2 1 Octet

MCC digit 2 MCC digit 1 1

MNC digit 1 MCC digit 3 2MSIN digit 1 MNC digit 2 3

MSIN digit 3 MSIN digit 2 4




NSAPI MSIN digit 10 8

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12/16

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8 7 6 5 4 3 2 1 Octet

Address 1

Control 2

Information

FCS

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8 7 6 5 4 3 2 1 Octet

PD C/R XX SAPI 1

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13/16

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14/16

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8 7 6 5 4 3 2 1 Octet

X C T M NSAPI 1DCOMP PCOMP 2

Data 3-n

61'$7$3'8VWUXFWXUH

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8 7 6 5 4 3 2 1 Octet

X C T M NSAPI 1

DCOMP PCOMP 2

Segment offset N-PDU number 3

E N-PDU number (continued) 4

N-PDU number (extended) 5

Data 6-n

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15/16

61'&3

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16/16

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gprs protocols

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