METHOD AND DEVICE OF SELECTIVELY RECOVERING PACKET LOSS IN MOBILE WIMAX

摘要

PURPOSE: A method and an apparatus for selectively restoring lost packets in a mobile worldwide interoperability for microwave access(WiMax) are provided to supply seamless video services and keep the existing quality of images. CONSTITUTION: An access control router(ACR) sets the priority of packets based on received priority information and includes a priority manager and a multicast broadcast service(MBS) distributed data path function. The priority manager manages and stores the priority information. The MBS distributed data path function transmits the priority information and the sequence information of the packets to a radio access station(RAS). The RAS includes a priority analyzer and an RAS buffering controller. The priority analyzer confirms the loss of packets received from the ACR and determines the re-reception of lost packets according to the priority information.