Projet 2a

Technical requirements for the handover interfaces for the execution of telecommunications surveillance

For E-UTRAN the "startTime" and "endTime" of the

network access session correspond to the activation,

respectively the deactivation, of the default bearer or

tunnel, as specified in 3GPP TS 23.401 V13.5.0 and

3GPP TS 23.402 V13.1.0.

Note: In case of roaming session the GPRS “Call Event

Start Timestamp” provided by the visited serving mobile

network is in local time. In order that this local time can

be equated with the time in the home network, the

difference between local time and UTC Time is

supplied with the attribute “UTC Time Offset” defined as

Local Time minus UTC Time.

Examples:

Visited serving network: USA, location: Washington DC

Local time: 1000hrs

UTC Time: 1500hrs

UTC Time Offset: 10 -15 = -5

Where dates are different, 24 hours are added to the

time of the greater date.

Visited serving network: Australia, location: Sydney

Local time: 0100hrs

UTC Time: 1500hrs

UTC Time Offset: (01+24) -15 = +10

The interval structure is composed of the following

elements: 1) startTime and 2) endTime:

1) startTime Annex E.3

Description and requirements Examples

The calendar date and time of the beginning of the 20140310145234+0100 network access with at least a precision to the second. 20140615092545+0200 It shall be in local time with indication of the time zone 20140712160841.2+0200 relative to UTC. The format is according to the

GeneralizedTime parameter specified in ITU-T X.680

(11/08).

2) endTime Annex E.3

Description and requirements Examples

The calendar date and time of the end of the network 20140310152812+0100 access with at least a precision to the second. It shall 20140615132834+0200 be in local time with indication of the time zone relative 20140713023403.2+0200 to UTC. The format is according to the

GeneralizedTime parameter specified in ITU-T X.680

(11/08).

naDeviceID Table E.3

Description and requirements Examples

Information on the device used to access the service, if a1:23:45:67:8d:5b available. Depending on the type of network access, 357160045577005 the device identification can be for example a MAC