layer 3 messages

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1. Paging Messages 1 1 2 3 2 1 2 3 2. System Info Messages 1 IDLE MODE Informations 1 2 3 4 5 2 DEDICATED MODE Information 1 2 3. Call Processing Messages 1 2 3 Other L3 Messages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Paging Type 1 2 TMSI Combination 1 TMSI & 1 IMSI Combination 2 IMSI Combination Paging Type 2 2 TMSI & 1 IMSI Combination 3 TMSI Combination Paging Type 3 System Info 1 System Info 2 System Info 3 System Info 4 System Info 13 System Info 5 System Info 6 MS Originated Call MS Terminated Call Location Updating Procedure Channel Request for LU Location Update Request Location Update Accept Immediate Assignment Extended Disconnect due to No Circuits Disconnect Normal Cause Release Release Complete Channel Release Sync Channel Information Measurement Report Classmark Enquiry Classmark Change Channel Request for Call Re-establishment Immediate Assignment for Call Re-establishment CM Re-establishment Request CM Service Reject CM Service Accept Cell Broadcast Page Channel Mode Modify

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GSM layer 3

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Page 1: Layer 3 Messages

1. Paging Messages

1123

212

3

2. System Info Messages

1 IDLE MODE Informations12345

2 DEDICATED MODE Information12

3. Call Processing Messages123

Other L3 Messages123456789

1011121314151617181920

21

Paging Type 12 TMSI Combination1 TMSI & 1 IMSI Combination2 IMSI Combination

Paging Type 22 TMSI & 1 IMSI Combination3 TMSI Combination

Paging Type 3

System Info 1System Info 2System Info 3System Info 4System Info 13

System Info 5System Info 6

MS Originated CallMS Terminated CallLocation Updating Procedure

Channel Request for LULocation Update RequestLocation Update AcceptImmediate Assignment ExtendedDisconnect due to No CircuitsDisconnect Normal CauseReleaseRelease CompleteChannel ReleaseSync Channel InformationMeasurement ReportClassmark EnquiryClassmark ChangeChannel Request for Call Re-establishmentImmediate Assignment for Call Re-establishmentCM Re-establishment RequestCM Service RejectCM Service AcceptCell Broadcast PageChannel Mode Modify

Channel Mode Modify Acknowledge

Page 2: Layer 3 Messages

Paging Message Type 1 (2 TMSI Combination)

Brief Idea: Generally 3 types of Paging messages. 1. Paging Message Type 1

Contains Paging for Max 2 mobiles, with IMSI or TMSI

2. Paging Message Type 2Contains Paging message for 3 mobiles. 1 IMSI and the other 2 or 1 TMSI

3. Paging Message Type 3Contains only 4 TMSI's.

Paging Message Type 1 (1 TMSI & 1 IMSI Combination)

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Page 3: Layer 3 Messages

Paging Message Type 1 (2 IMSI Combination) Click to return to main page

Page 4: Layer 3 Messages

Paging Message Type 2 (2 TMSI & 1 IMSI Combination)

Paging Message Type 2 (3 TMSI Combination)

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Page 5: Layer 3 Messages

Paging Message Type 3 ( Will contain only 4 TMSI) Click to return to main page

Page 6: Layer 3 Messages

Brief Idea: Generally 3 types of Paging messages. 1. Paging Message Type 1

Contains Paging for Max 2 mobiles, with IMSI or TMSI

2. Paging Message Type 2Contains Paging message for 3 mobiles. 1 IMSI and the other 2 or 1 TMSI

3. Paging Message Type 3Contains only 4 TMSI's.

Page 7: Layer 3 Messages

System Info 1 ( Idle Mode)

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System Info 2 ( Idle Mode)

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System Info 3 ( Idle Mode)

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This message normally for the Cell channel Informations. This will give the no of frequencies allocated for the particular cell. In hopping case this will indicate the frequencies in the MAL list along with the BCCH frequency. In non hopping case will indicate the TCH & BCCH frequencies.

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This message gives the information about the neighbor frequencies in the idle mode. Will only gives the BCCH of the neighbors defined. And the NCC permitted parameter allows the mobile to restrict the neighbors to be sent in the measurement report.

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Page 8: Layer 3 Messages

System Info 4 ( Idle Mode)

Note:

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This message gives the information about the CBCH for the mobile to decode the CBCH. Along with the other cell level details like LAC, RACH control parameters etc…..

Page 9: Layer 3 Messages

System Info 5 ( Dedicated Mode)

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System Info 6 ( Dedicated Mode)

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This message gives the information about the neighbor frequencies in the dedicated mode. Will only gives the BCCH of the neighbors defined.

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Page 10: Layer 3 Messages

System Info 13 ( Idle Mode, GPRS Information) Click to return to main page

Page 11: Layer 3 Messages

This message normally for the Cell channel Informations. This will give the no of frequencies allocated for the particular cell. In hopping case this will indicate the frequencies in the MAL list along with the BCCH frequency. In non hopping case will indicate the TCH & BCCH frequencies.

This message gives the information about the neighbor frequencies in the idle mode. Will only gives the BCCH of the neighbors defined. And the NCC permitted parameter allows the mobile to restrict the neighbors to be sent in the measurement report.

Page 12: Layer 3 Messages

This message gives the information about the CBCH for the mobile to decode the CBCH. Along with the other cell level details like LAC, RACH control parameters etc…..

Page 13: Layer 3 Messages

This message gives the information about the neighbor frequencies in the dedicated mode. Will only gives the BCCH of the neighbors defined.

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Page 15: Layer 3 Messages

1. Channel Request

2. Immediate Assignment

3. CM Service Request

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Page 16: Layer 3 Messages

4.Authentication Request go back

Page 17: Layer 3 Messages

5. Authentication Response

6. Ciphering Mode Command

7. Ciphering Mode Complete

8. Setup

Point 2:

In this message only the mobile forward the called number to the system.

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Page 18: Layer 3 Messages

9. Identity Request

10. Identity Response

11. Call Proceeding

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12. Assignment Command

13. Assignment Complete

14. Alerting

15. Connect

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16. Connect Acknowledge go back

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Point 1

Once the Mobile sends the RACH it tries to decode all the AGCH information and waits for the Immediate assignment targeted to the particular mobile. It is being identified from the Establishment cause and Random reference.

Page 22: Layer 3 Messages

In this message only the mobile forward the called number to the system.

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1. Paging to the MS

2. Channel Request

3. Immediate Assignment

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Page 25: Layer 3 Messages

4. Paging Response

5. Ciphering Mode Command

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6. Ciphering Mode Complete

7. Identity Request

8. Identity Response

9. Setup

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Page 27: Layer 3 Messages

10. Call Confirmed

11. Assignment Command

12. Assignment Command

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13. Alerting

14. Connect

14. Connect Acknowledge

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Page 29: Layer 3 Messages

SMS Request

SMS Service Request Message

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Page 31: Layer 3 Messages

System Info 5 for the following Handover process

Measurement Report 1

Measurement Report 2

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Measurement Report 3

Measurement Report 4

Measurement Report 5

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Measurement Report 6

Measurement Report 7

Measurement Report 8

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Measurement Report 9

Measurement Report 10

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Measurement Report 11

Measurement Report 12

Measurement Report 13

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Measurement Report 14

Measurement Report 15

Handover Command

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Handover Access

Physical Information

Handover Complete

Physical Information

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Channel Request

Immediate Assignment

Location Updating Request

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Authentication Request

Authentication Response

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TMSI Reallocation Command

TMSI Reallocation Complete

Location Updating Accept

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Channel Request for Location Updating

Immediate Assignment Extended

DL Disconnect due to NO circuits

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DL Disconnect Normal Cause

Release

Release Complete

Channel Release

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Sync Channel Information

Measurement Report

Location Update Request

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Location Updating Accept

Classmark Enquiry

Classmark Change

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Channel Request for Call re-establishment

Immediate Assignment for Call re-establishment

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CM Re-establishment Request

CM Service Reject

CM Service Accept

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Cell Broadcast Page

Channel Mode Modify

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Channel Mode Modify Acknowledge

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This is scheduled to allocate SDCCH for 2 mobiles simultaneously.

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Page 61: Layer 3 Messages

Note

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In dedicated mode or group transmit mode, higher layers can request the setting of the channel mode.The channel mode modify procedure allows the network to request the mobile station to set the channelmode for one channel. The channel mode covers the coding, decoding and transcoding mode used on theindicated channel.

Page 62: Layer 3 Messages

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