GTPv2 (Sm)
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Landslide Performance Test System – Release 24.3 September 2024

GTPv2 (Sm)

In eMBMS Node test case, the GTPv2 tab in Sm interface tab provides configuration (for Control plane) between MME and MBMS GW, based on GTPv2-C and supports broadcast mode for the EPS architecture. For broadcast mode, the first signaling message comes from the SUT or Node. (Hence, no configuration for Sm interface in eMBMS Nodal test case).

Sm interface tab is visible in “eMBMS-GW and BMSC” or “eMBMS-GW” emulator mode.

 

 

Service Areas

 

 

 

 

 

 

GTPv2 Version

Use the drop-down list to select the GTPv2 version to be used by the eMBMS node. The applicable parameters are enabled depending on your selection.

Default: 11.7.0

Tcl Parameter: Gtp2Version

MBMS Session Duration

Indicates the attribute includes in the MBMS Session Start message (sent to the registered MBMS GW(s) and MME(s)).

It’s not available as “eMBMS-GW” emulator mode is selected.

Range : 1 to 1641600

Default : 1

Tcl Parameter : Gtp2MbmsSessDuration

MBMS Session Identifier

Indicates the attribute included in the Session Start Request message.

It’s not available as “eMBMS-GW” emulator mode is selected.

Range : 1 to 255

Default : 1

Tcl Parameter : Gtp2MbmsSessId

MBMS Flow Identifier

Indicates the attribute included in the Session Start Request message.

It’s not available as “eMBMS-GW” emulator mode is selected.

Range : 1 to 65535

Default : 1

Tcl Parameter : Gtp2MbmsFlowIdEn

Tcl Parameter : Gtp2MbmsFlowId

Multicast Source IP Address

Source IP Address (MBMS-GW) for MBMS data delivery.

Tcl Parameter : Gtp2MbmsMulticastSrclp

Multicast IP Address

Indicates the IP address based on which the BM-SC send an authorization request to the UE.

Tcl Parameter : Gtp2MbmsMulticastlp

Common TIED

Indicates the common Tunnel Endpoint ID (TEID).

Tcl Parameter : Gtp2MbmsCommonTeid

Recovery

Indicates the Recovery.

Range from 1 to 255.

Tcl Parameter : Gtp2MbmsRecovery

Sender F-TIED for Control Plane

Indicates the sender Tunnel Endpoint ID (TEID) for Control Plane processing.

Tcl Parameter : Gtp2MbmsSenderFteid
  • Mobile Country Code
  • Mobile Network Code
  • Service ID

 

Configure the location and Serving Network to which the UE (mobile subscriber) is attached.

They ares not available as “eMBMS-GW” emulator mode is selected.

Mobile Country Code

 

Defines the mobile subscriber's country of domicile.

Range: 000 — 999 (leading zeros are retained)

Default: 000

Tcl Parameter: Gtp2MbmsMcc

Mobile Network Code

Defines the mobile subscriber's home PLMN (Public Land Mobile Network)

Range: 000 — 999 (leading zeros are retained)

Default: 000

Tcl Parameter: Gtp2MbmsMnc

Service ID

Identifies the type of service used by the UE (mobile subscriber).

Tcl Parameter: Gtp2MbmsServiceId

 
Time to Data Transfer  

Indicates the minimum time between the transmission of the MBMS Session Start Request message and the actual start of the data transfer.

Enter a length of time to wait before the Data transfer.

It’s not available as “eMBMS-GW” emulator mode is selected.

NOTE: This parameter is not used when Content Type = WebDAV. When Content type = WebDav, data traffic is started on content server (emulated by IP App node), when to start transmitting downstream data from BMSC is determined by the configuration on IP App Node and BMSC FLUTE "Send delay".  

 

Range: 1 - 256

Default: 1

Tcl Parameter: Gtp2MbmsTimeToDataTransfer
MBMS Data Transfer Start

Indicates the absolute time of the actual start of the MBMS data transfer. It’s a new attribute introduced in version 11.7.0 and shall be included in MBMS Session Start message if it’s received from BM-SC.

If a time in the past is configured, it will be ignored and the relative “Time to Data Transfer” will be used to start MBMS data transfer.

It’s not available as “eMBMS-GW” emulator mode is selected. It’s available as “eMBMS-GW and BMSC” emulator mode is selected and GTPv2 version is 11.7.0. Tcl Parameter: Gtp2MbmsDataTransferStartEn Tcl Parameter: Gtp2MbmsDataTransferStartTime
MBMS Data Transfer Stop

Indicates the absolute time of the actual stop of the MBMS data transfer. It’s a new attribute introduced in version 11.7.0 and shall be included in MBMS Session Stop message if it’s received from BM-SC.

It’s not available as “eMBMS-GW” emulator mode is selected. It’s available as “eMBMS-GW and BMSC” emulator mode is selected and GTPv2 version is 11.7.0. Tcl Parameter: Gtp2MbmsDataTransferStopEn Tcl Parameter: Gtp2MbmsDataTransferStopTime
N3-Command Request Attempts

The maximum number of attempts made by GTP to send a request message without receiving an associated response message from the Srv GW. Enter 1 to disable retries.

Range: 1 to 65535

Default : 5

Tcl Parameter: Gtp2MbmsN3Attempts
T3-Response Wait Time (s)    

The number of seconds to wait for a command request response. The T3 timer starts when a signaling request message (for which a response has been defined) is sent.

Range: 1 to 65535

Default : 20

Tcl Parameter: Gtp2MbmsT3Time

 

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Service Areas

 

Starting Serving Area

Service Area identifies the location of the serving network to which the UE (mobile subscriber) is attached.. Starting Service Area and Number of Service Areas are combined used to configure service area list for MBMS bearers which is included in MBMS Session Start Request message. It will auto increase if multiple service areas or multiple MBMS bearers need to configure.

Range: 1 — 65535 (0 is skipped)

Default: 1

Tcl Parameter: Gtp2MbmsStartingServiceArea
Number of Service Areas

Identifies the number of service areas to be configured for a MBMS bearer in Session Start Request message

Range: 1 — 256

Default: 1

Tcl Parameter: Gtp2MbmsNumServiceArea
Bearer Update Delay   Number of New Service Areas     Starting New Service Areas  

They are not available as “eMBMS-GW” emulator mode is selected.

Bearer Update Delay: The number of seconds to wait, after a MBMS Bearer connection is established, before sending the update request.

Range: 1 — 65535

Default: 1

Tcl Parameter: Gtp2MbmsBearerUpdateDelayEn

Tcl Parameter: Gtp2MbmsBearerUpdateDelay

Starting New Service Area: Service Area indicates location of the new serving network to which the UE (mobile subscriber) attaches after Bearer Update Delay expires. Available only when you select Bearer Update Delay.Starting Service Area and Number of New Service Areas are combined used to configure updated service area list for MBMS bearers which is included in MBMS Session Update Request message. It will auto increase if multiple service areas or multiple MBMS bearers need to configure.

Range: 1 — 65535 (0 is skipped)

Default: 1

The MBMS Session Update message is sent after the time specified in the Bearer Update Delay expires.

Tcl Parameter: Gtp2MbmsStartingNewServiceArea

Number of New Service Areas: Identifies the number of service areas to be configured for a MBMS bearer in MBMS Session Update Request message

Range: 1 — 256

Default: 1

Tcl Parameter: Gtp2MbmsNumNewServiceArea
Manually Assign Service Areas to Bearer Groups

Select to enable the table below to manually enter up to 100 Bearer Groups. Starting Service Area, Number of Service Areas, Starting New Service Area and Number of New Service Areas are all Disabled.

Tcl Parameter: Gtp2MbmsBearerGroupsEn
Number of Bearer Groups

Enabled when Manually Assign Service Areas to Bearer Groups is selected. Enter up to 100 Bearer Groups. Remaining Bearers at the end of the pane will display the remaining bearers left to be configured.

Enter Number of Bearer Groups.

Tcl Parameter: Gtp2MbmsBearerGroups

They ares not available as “eMBMS-GW” emulator mode is selected.

Group #

Enter Group number. Index to Table

Range: 1 — 100

# of Bearers

Defines the Number of Bearers in the Group. The total number of Bearers from all the rows must equal the "Number of MBMS Bearers" on the eMBMS Emulator Configuration - Number of MBMS Bearers.

Default: 1

Tcl Parameter: Gtp2MbmsNumBearers_1

Range

Identifies the range of the Bearer Group.

Service Area(s)

Service Area identifies the location of the serving network to which the UE (mobile subscriber) is attached.

Range: Enter a single integer or comma separated , 1 — 65535 (0 is skipped)

Default: 1

Tcl Parameter: Gtp2MbmsServiceAreas_1

New Service Area (s)

New Service Area is required when Bearer Update Delay (s) is selected. Indicates location of the new serving network to which the UE (mobile subscriber) attaches after Bearer Update Delay expires,

Range:  Enter a single integer or comma separated , 1 — 65535  (0 is skipped)

Default: 2,3,4

Tcl Parameter: Gtp2MbmsNewServiceAreas_1

 

 

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Bearer Quality of Service

QoS measurements apply to eMBMS session loads and user service bandwidths to control network quality-of-service for sessions of multicast and broadcast MBMS bearer services.

It’s not available as “eMBMS-GW” emulator mode is selected.

Summary/Individual

For eMBMS, Individual selection is not available. You can define one QOS for all bearers. Select Summary to use the same QOS configuration for all bearers in the Default tab

Class Identifier

The Class ID in the Bearer QOS applies to the Uplink (UL) and Downlink (DL) IP flows. LTE test cases provide you with the ability to configure various QCI.

You can choose to use the same QoS Class ID for all IP contexts or you can define different Class IDs for each context.

Range: 0 — 255

TIP: To ensure that the value in the Class Identifier takes effect, either press the Tab key or click on another field.

Tcl Parameter: Gtp2QosClassId_1

 

ARP Priority Level

Use the ARP (Priority of Allocation and Retention) to determine the relative priority level during admission and congestion processes.

The primary purpose of ARP is to decide whether a bearer establishment/modification request is accepted or needs to be rejected in case of resource limitations (typically available radio capacity in case of GBR bearers). In addition, the ARP is also used (e.g. by the eNodeB) to decide which bearer(s) to drop during exceptional resource limitations (e.g. at handover). Once successfully established, a bearer's ARP does not have any impact on the bearer level packet forwarding treatment (e.g. scheduling and rate control).

 

Range: 1 - 15

Default: 1

Tcl Parameter: Gtp2QosArpValue_1

 

Set Bit Rates

The Set Bit Rates checkbox is available only when Class Identifier value is 0 or between 10 and 255.

Range : 0 to 255

Select Set Bit Rates to enter the Maximum Bit Rates and Guaranteed Bit Rates values for UL and DL traffic.

Tcl Parameter: Gtp2QosBrEn_1

 

Pre-emption Capability

Selecting this checkbox indicates that the bearer may preempt other bearers with a lower ARP value when resource limitations are reached.

Tcl Parameter: Gtp2QosArpPreemptCapEn_1

NOTE: The Pre-emption Capability and Vulnerability are available regardless of GTPv2 version.

Pre-emption Vulnerability

Selecting indicates that a bearer is vulnerable to being dropped when resource limitations have been reached and there is a bearer with a higher ARP value in service.

Tcl Parameter: Gtp2QosArpPreemptCapEn_1

 

Maximum Bit Rates and

Guaranteed Bit Rates

Define the IP flow Maximum Bit Rates and Guaranteed Bit Rates for UL and DL traffic.

Range: 0 - 10000000000

Default: 1

NOTES:

  • when Class Identifier is 5,6,7,8 and 9, the Maximum Bit Rates and Guaranteed Bit Rates parameters for UL and DL are not available

  • When Class Identifier is 1, 2, 3, or 4 the Maximum Bit Rates and Guaranteed Bit Rates parameters for UL and DL are available.

  • When Class identifier is 0, or between 10 and 255, the Maximum Bit Rates and Guaranteed Bit Rates parameters for UL and DL are available only when you select the Set Bit Rate checkbox.

 

Tcl Parameters:

Gtp2QosMaxUplink_1 Gtp2QosGuarUplink_1
Gtp2QosMaxDownlink_1 Gtp2QosGuarDownlink_1

 

 

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