CONNECTION IDENTIFICATION IN TRANSMISSION SYSTEM OF WIRELESS TELECOMMUNICATION NETWORK OVER ATM PROTOCOL STACK

摘要

The invention relates to wireless telecommunication systems employing ATM technique (Asynchronous Transfer Mode) in transmission systems. A signalling arrangement between network elements comprises a protocol stack comprising on top a layer (3) user function for signalling between a wireless mobile station (MS) and a network, an ATM adaptation layer, an ATM layer and a physical layer. In accordance with the invention the ATM adaptation layer comprises on top a service-specific co-ordination function (SSCF) immediately between said higher user function and a service-specific connection-oriented protocol (SSCOP). Said service-specific co-ordination function comprises as functions the adaptation of the user function to the service-specific connection-oriented protocol and the establishment, discrimination and release of the signalling connections of the ATM adaptation layer needed for conveying signalling messages of the layer (3) user function. The invention provides a simple protocol stack that is easy to implement. The efficiency of the protocol stack also increases as the number of layers decreases.