Patent ID: 8331365

Claim:
A method for filtering in a network entity of a core network or a radio access network of a mobile communication system a multicast or broadcast service provided in the form of a multiplexed packet stream, the multiplexed packet stream being delivered from a service center via the network entity toward at least one mobile terminal, the method being performed by the network entity and comprising: receiving the multicast or broadcast service via multicast or broadcast, wherein the multicast or broadcast service is multicast or broadcast as a single bearer service and the multiplexed packet stream comprises a plurality of packet streams each being associated to quality-of-service attributes, receiving from an upstream network entity context information of the multicast or broadcast service, the context information comprising information on the packet streams belonging to the multicast or broadcast service, the quality-of-service attributes of the packet streams belonging to the multicast or broadcast service, and, where applicable, combinations of the packet streams providing the multicast or broadcast service at different quality of service levels, obtaining from a quality-of-service management function of a service manager within the network entity quality-of-service constraints indicating a quality-of-service available for data transmission on each of a plurality of downstream interfaces of the network entity, selecting for a respective one of the downstream interfaces of the network entity one of the packet streams of the multicast or broadcast service or a combination of the packet streams of the multicast or broadcast service, transmittable downstream within the obtained quality-of-service constraints, wherein the selecting is based on the context information of the multicast or broadcast service received from the upstream network entity, and forwarding the selected packet stream or streams of the multiplexed packet stream downstream towards the at least one mobile terminal, wherein the received context information on the quality-of-service attributes of the multiplexed packet stream indicates at least one of a guaranteed bandwidth of each of the packet streams, a delivery order of service data units, a maximum size of service data units, a service data unit format, a service data unit error ratio, a residual bit error ratio, an indication whether erroneous service data units should be delivered or discarded, a transfer delay parameter, a traffic handling priority of the single bearer service, and an Allocation/Retention Priority of the single bearer service.