Mobility Management Messages
Message Type |
Used
By |
Description |
Identification Request/Re- sponse |
GTP-C |
Sent by the new SGSN to the old SGSN to request the IMSI for a MS when a GPRS Attach is done with a P-TMSI and the MS has changed SGSNs since the GPRS Detach was done. |
SGSN context Request/ Response/ Acknowledge |
GTP-C |
Sent by the new SGSN to the old SGSN to request the MM and PDP Contexts for the MS. |
Forward Relocation Request/ Response/ Complete/ Com- plete Acknowledge |
GTP-C |
Indicates mobile activation/deactivation within a Routing Area. This prevents paging of a mobile that is not active (visited VLR rejects calls from the HLR or applies Call Forwarding). Note that the mobile station does not maintain an attach/detach state. |
SRNS contexts contain for each concerned RAB the sequence numbers of the GTP-PDUs next to be transmitted in uplink and downlink directions. |
||
Relocation Cancel Request/ Response |
GTP-C |
Send to cancel the relocation of a connection. |
Forward SRNS Context/ Con- text Acknowledge |
GTP-C |
This procedure may be used to trigger the transfer of SRNS con- texts from RNC to CN (PS domain) in case of inter system for- ward handover. |
Forward the Routing Area Network (RAN) information. |
||
RAN Information Relay |
GTP-C |
A Routing Area (RA) is a subset of a GSM Location Area (LA). A RA is served by only one SGSN. Ensures that regular radio con- tact is maintained by the mobile |
MBMS messages |
||
Message Type |
Used
By |
Description |
MBMS Notification Request/ Response/ Reject Request/ Reject Response |
GTP-C |
Notification of the radio access devices. |
Create MBMS Context Request/ Response |
GTP-C |
Request to create an active MBMS context. The context will be pending until the response is received.
Once active, the MBMS context allows the MS to receive data from a specific MBMS source |
Message Type Used
By
Description
Update MBMS Context
Request/ Response
Delete MBMS Context
Request/ Response
GTP-C
GTP-C Request to deactivate the MBMS context. When the response is received, the MBMS context will be inactive.
Having trouble configuring your Fortinet hardware or have some questions you need answered? Check Out The Fortinet Guru Youtube Channel! Want someone else to deal with it for you? Get some consulting from Fortinet GURU!