05 - ps call setup.ppt
DESCRIPTION
05 - PS Call Setup.pptTRANSCRIPT
PS Call SetupPS Call Setup
PS Call Setup– Attach And Detach
– PDP Context Activation
– Iu-CS VS Iu-PS
– Encryption
PMM and SM State
Detached
Connect
Idle
Inactive
Active
SM StatePMM State
ON
AttachOFF
Detach
“Iu Release”Command Message
PDP Context
Activation
PDP Context
Deactivation
GPRS Attach
UEATTACH REQUEST ( )
(Identification Procedure)
Authentication and Ciphering Procedure
ATTACH ACCEPT ( )
e.g. new TMSIor P-TMSI
ATTACH COMPLETE ( )
3G-SGSN
Radio Bearer Setup
UE Initiated PDP Context Activation
UE
3G-SGSN
GGSNACTIVATE PDP CONTEXT REQUEST ( )
ACTIVATE PDP CONTEXT ACCEPT ( )
CREATE PDP CONTEXT REQUEST
CREATE PDP CONTEXT RESPONSE
UPDATE PDP CONTEXT REQUEST
UPDATE PDP CONTEXT RESPONSE
PDP Context Activation
Protocol discriminator
Requested QoS
Requested LLC SAPI
Transaction indicator
Activate PDP contextrequest message ID
Requested PDP address
Access Point Name OP
Requested NSAPI
Protocol configurationoptions OP
1010: GPRS session management messages
01000001: Activate PDP context request
• Delay class• Reliability class• Precedence class• Mean and peak
throughput class• Maximum UL/DL bit rate• Transfer delay• Guaranteed UL/DL bit
rate• Residual BER• Delivery order• etc.
UE 3G-SGSN
ACTIVATE PDP CONTEXT REQUEST ( )
PDP Context Activation
Protocol discriminator
Negotiated QoS
Negotiated LLC SAPI
Transaction indicator
Activate PDP contextrequest message ID
PDP address
Packet Flow Identifier
OPProtocol configuration
options
OP
Radio priority
Spare half octet
OP
1010: GPRS session management messages
01000010: Activate PDP context accept
Not required in UMTS, but transmitted tosupport UMTS – GPRS cell reselection
UE 3G-SGSN
ACTIVATE PDP CONTEXT ACCEPT ( )
Overview of Setting Up CallMobile Terminated Call (MTC)
ServiceRequest
Radio AccessBearer
Paging
Mobile Originated Call
RRCConnectio
n
Iu-CS VS Iu-PS Call SetupRRC
ServiceReq
Security Mode Command
RAB Establishment Iu-CS VS Iu-PS
For non-real time services, the radio access bearer is created without immediately reserving radio resources
RAB
Iu-CS Iu-PS
PDP Context Activation
RAB Assignment Iu-CS VS Iu-PS Iu-PS RAB-ASSIGNMENT REQUEST
RANAP-PDU
initiatingMessage
- procedureCode: 0
- criticality: reject
initiatingMessage
RAB-AssignmentRequest
protocolIEs
- id: 54
- criticality: ignore
RAB-SetupOrModifyList
- id: 53
- firstCriticality: reject
firstValue
- rAB-ID: '00000101'B
rAB-Parameters
- trafficClass: background
- rAB-AsymmetryIndicator: symmetric-bidirectional
maxBitrate
- MaxBitrate: 128000
- deliveryOrder: delivery-order-not-requested
- maxSDU-Size: 12016
sDU-Parameters
residualBitErrorRatio
- mantissa: 1
- exponent: 5
Iu-CS RAB-ASSIGNMENT REQUEST
RANAP-PDU
initiatingMessage
- procedureCode: 0
- criticality: reject
initiatingMessage
RAB-AssignmentRequest
protocolIEs
- id: 54
- criticality: ignore
RAB-SetupOrModifyList
- id: 53
- firstCriticality: reject
firstValue
- rAB-ID: '00000001'B
rAB-Parameters
- trafficClass: conversational
- rAB-AsymmetryIndicator: symmetric-bidirectional
maxBitrate
- MaxBitrate: 12200
guaranteedBitRate
- GuaranteedBitrate: 4750
- deliveryOrder: delivery-order-requested
- maxSDU-Size: 244
sDU-Parameters
sDU-ErrorRatio
- mantissa: 7
- exponent: 3
Bit rate
RAB Assignment Iu-CS VS Iu-PS Iu-PS residualBitErrorRatio
- mantissa: 1
- exponent: 5
- deliveryOfErroneousSDU: no-error-detection-consideration
allocationOrRetentionPriority
- priorityLevel: 2
- pre-emptionCapability: shall-not-trigger-pre-emption
- pre-emptionVulnerability: pre-emptable
- queuingAllowed: queueing-not-allowed
- relocationRequirement: none
Iu-CS residualBitErrorRatio
- mantissa: 1
- exponent: 6
- deliveryOfErroneousSDU: yes
sDU-FormatInformationParameters
- subflowSDU-Size: 81
: :
residualBitErrorRatio
- mantissa: 1
- exponent: 3
- deliveryOfErroneousSDU: no-error-detection-consideration
sDU-FormatInformationParameters
- subflowSDU-Size: 103
: :
residualBitErrorRatio
- mantissa: 5
- exponent: 3
- deliveryOfErroneousSDU: no-error-detection-consideration
sDU-FormatInformationParameters
- subflowSDU-Size: 60
: :
- transferDelay: 80
- sourceStatisticsDescriptor: speech
RAB Assignment Iu-CS VS Iu-PS Iu-PS
userPlaneInformation
- userPlaneMode: transparent-mode
- uP-ModeVersions: '0000000000000001'B
transportLayerInformation
- transportLayerAddress: '00001010001110100001010100000101'B
- -extension range: 0
- length (in bits): 00011111
- padding: 00000
- contents: 0A 3A 52 0C
iuTransportAssociation
- gTP-TEI: '3C000000'H
- service-Handover: handover-to-GSM-should-not-be-performed
- secondCriticality: ignore
secondValue
pDP-TypeInformation
- PDP-Type: ipv4
- PDP-Type: ipv4
- dataVolumeReportingIndication: do-not-report
Iu-CS
userPlaneInformation
- userPlaneMode: support-mode-for-predefined-SDU-sizes
- uP-ModeVersions: '0000000000000001'B
transportLayerInformation
- transportLayerAddress: '01000101000000000000000000000110011000011
000000110010000000100010001111100000000000 00000000000000000000000000000000000000000
00000000000000000000000000000000000 0'B
- extension range: 0
- length (in bits): 10011111
- padding: 000000
- contents
45 00 00 06 61 81 90 11 1F 00 00 00 00 00 00 00 00 00 00 00
iuTransportAssociation
- bindingID: '01025550'H
- secondCriticality: ignore
secondValue
Tunnel Unit (TU) of SGSN
i.e. 10.58.82.12
Tunnel EndpointMGW A2EA
Encryption off and Encryption on
Encryption setting in 3G SGSN
Encryption off Encryption on
User Data can not be decoded
Encryption off Encryption on
Iu-PS Attach (1/2) UE RNC
RRC Connection Setup
GMM : Identity RequestRANAPRANAP
Identity Request (GMM)RRC RRC
SGSN Node-B
Initial Direct Transfer
Attach Request GMMRRC RRC
Initial UE Message
Attach Request GMMRANAPRANAP
Identity Response (GMM)RRC RRC
RANAPRANAPGMM: Identity Response
Iu-PS Attach (2/2) UE RNC
RRC Connection Setup
GMM: Authentication & Ciphering Request RANAPRANAP
GMM: Authentication & Ciphering RequestRRC RRC
SGSN Node-B
RRC RRC
RANAPRANAP
GMM: Authentication & Ciphering Response
GMM: Authentication & Ciphering Response
GMM: Attach Accept RANAPRANAP
GMM: Attach AcceptRRC RRC
RRC RRC
RANAPRANAP
GMM: Attach Complete
GMM: Attach Complete
Security Mode Command
Common ID RANAPRANAP