There are several different events in which the information is sent to the DF2 if this is required. The events for interception are configurable (if they are sent to DF2) in the PDN-GW, LI LCS Client and can be suppressed in the DF2. The network procedures for which the events are generated are defined in TS 23.402
The following events are applicable to the PDN-GW:
PMIP Attach/tunnel activation;
PMIP Detach/tunnel deactivation;
PMIP session modification
Start of interception with active PMIP tunnel;
PMIP PDN-GW initiated PDN-disconnection;
Packet Data Header Information.
A set of elements as shown below can be associated with the events. The events trigger the transmission of the information from the nodes to DF2. Available IEs from this set of elements as shown below can be extended in the nodes, if this is necessary as a national option. DF2 can extend available information if this is necessary as a national option.
Observed MN NAI
The Network Access Identifier of the Mobile Node (target identity).
MSISDN of the target.
IMEI of the target
Indicates which type of event is delivered: PMIP attach/tunnel activation, PMIP detach/tunnel deactivation, PMIP Session modification, Start of interception with active PMIP tunnel, PMIP PDN-GW initiated PDN disconnection, , Packet Data Header Information.
Time of the event generation in the ICE. Time stamp shall be generated relative to ICE internal clock.
Date of the event generation in the ICE.
The correlation number is used to correlate CC and IRI.
Network Element Identifier
Unique identifier for the ICE reporting the event.
Logical Function Information
Used to distinguish between multiple logical functions operating in a single physical network element.
Indicates the lifetime of the tunnel; it is set to a nonzero value in the case of registration; is set to zero in case of deregistration.
Failed attach reason
Reason for the failed attach/tunnel deactivation of the target.
Access technology type
Indicates the Radio Access Type.
Provides information on whether the procedure is triggered as part of a handover.
The Access Point Name used for the connection.
UE address info
Includes one or more IP addresses allocated to the UE.
Additional information provided by the UE, such as protocol configuration options.
The UE IP address(es) for the PDN connection.
Indicates the reason which triggered the PDN-GW initiated PDN-disconnection procedure
Identifies the serving network the UE is attached to
DHCP v4 Address Allocation Indication
Indicates that DHCPv4 is to be used to allocate the IPv4 address to the UE
Provides, if received from the PCRF, and/ or from the LI LCS Client, location information of the target.
Time of Location
Date/Time of location. The time when location was obtained by the location source node.
Destination IP Address
The IP address, including type IPv4 or IPv6, of the destination of the IP packet.
Destination Port Number
The port number of the destination of the IP packet.
Flow Label (IPv6 only)
The field in the IPv6 header that is used by a source to label packets of a flow (see RFC 3697 ).
The number of packets detected and reported (for a particular summary period).
Packet Data Summary Reason
The reason for a Packet Data Summary message being sent to the LEMF (e.g., timed out, counter expiration, end of session)
The size of the packet. (i.e., Total Length Field in IPv4 or Payload Length field in IPv6)
Source IP Address
The IP address, including type IPv4 or IPv6, of the source of the IP packet.
Source Port Number
The port number of the source of the IP packet.
Sum of Packet Sizes (for a particular summary period)
The sum of values contained in the Total Length fields of the IPv4 packets or the sum of the values contained in the Payload Length fields of the IPv6 packets.
Includes the dates and times of the first and last packets in a particular packet data interval.
Transport Protocol (e.g., TCP)
The identification of the transport protocol of the packet or packet flow being reported.