| 摘要 |
The present invention relates to a method related to GPRS (General Packet Radio Service) system providing packet switched connections throughout a communication network, especially a PLMN (Public Land Mobile Network), said connections being related to 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 (Logic Link Control) is established when one mobile station activates one PDP context with a QoS for which the MS (Mobile Station) does not already have an LLC established, and in order to avoid separate handling of several logic links for one mobile station, and in order to avoid assignment of new link identities internally within an SGSM and at change of SGSN, it is according to the present invention suggested that the method involves the use of one LLC (Logic Link Control) with an independent set of link state variables per QoS, so as to allow independent handling of different QoS within said link.
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