FIELD: information technology.
SUBSTANCE: LTE/EPC communication network comprises a system (server), in which a Policy and Charging Rules Function (PCRF) is stored, i.e. charging rules for online and offline charging. To perform charging for a session, LTE network elements that are serving the session request charging rules from the PCRF that identifies the charging rules, and assigns a unique LTE charging identifier for the session across all network elements in the LTE/EPC communication network. The LTE network elements receive the charging rules from the PCRF along with the LTE charging identifier for the session. The LTE network elements generate charging messages for the session, and insert the LTE charging identifier in the charging messages. The LTE network elements then transmit the charging messages to a charging system which may then correlate the charging messages for the session based on the LTE charging identifier.
EFFECT: control reliability for LTE/EPC user service increases.
