Patent ID: 6438122
Filing Date: 2002-08-20
Classification: H04W

Abstract:
A method for use in a GPRS (General Packet Radio Service) system providing packet switched connections throughout a communication network, especially a PLMN (Public Land Mobile Network), said connections having different QoS (Quality of Service) levels between end users, wherein an LLC (Logic Link Control) protocol is a packet oriented protocol, and wherein an LLC layer is established when one MS (mobile station) activates one PDP (Packet Data Protocol) context with a QoS for which said MS does not already have said LLC layer established, comprising the steps of:utilizing one LLC layer with an independent set of link state variables per QoS, so as to allow independent handling of different QoS within said LLC layer; and utilizing one supervisory frame and using a bit-mapped LLSVI (Logic Link State Variable Indicator) for acknowledging several QoSs in said supervisory frame.