Method for policing data traffic, a data traffic policer realizing such a method and a telecommunication network including such a policer

摘要

A data traffic policer (POL) included in a telecommunication network, to police data traffic which includes data packets that are part of a lower order data flow that is on its turn part of a higher order data flow. Each data packet is associated to a lower order identifier (LOI) that identifies the lower order data flow and to a higher order identifier that (HOI) identifies the higher order data flow. The policer (POL) includes first determiner (DET1) coupled to an input of the policer (POL) to determine, upon reception of a data packet, its lower order identifier (LOI). A first controller (CTRL1) coupled to the first determiner (DET1) checks a conformance of the data packet according to predefined lower order conformance rules (LOC(LOI)) associated to its lower order identifier (LOI) and provides thereby a lower order conformance result (LOCR) that is lower order conforming or lower order non-conforming. Furthermore the policer (POL) includes second determiner (DET2) coupled to the input to determine the higher order identifier (HOI) that is associated to the data packet and forwards the higher order identifier (HOI) to a second controller (CTRL2). The second controller (CTRL2) checks a conformance of the data packet according to predefined higher order conformance rules (HOC(HOI)) associated to the higher order identifier (HOI) and provides a higher order conformance result (HOCR) that is higher order conforming or higher order non-conforming. The policer (POL) includes declarer (DECL) coupled between the first controller (CTRL1), the second controller (CTRL2) and an output (OUT) of the policer (POL). The declarer (DECL) declares, in the event when the lower order conformance result (LOCR) is lower order non-conforming, and the higher order conformance result (HOCR) is higher order conforming, the data packet as conforming. As a result, when being transmitted, the data packet uses some leftover bandwidth from another lower order data flow within the higher order data flow. After the heading, delete the title in its entirety.