Connection identification in transmission system of wireless telecommunication network over ATM protocol stack
First Claim
1. A signalling arrangement between network elements in a wireless telecommunication system having an asynchronous transfer mode (ATM)-based transmission system, the arrangement comprising a protocol stack which comprises, from top to bottom, a layer 3 user function for signalling between a wireless mobile station and a network, an ATM adaptation layer ATM layer and physical layer, wherein said ATM adaptation layer comprising on top a service-specific coordination function immediately between said layer 3 user function and a service-specific connection-oriented protocol, said service-specific coordination function comprising 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 said layer 3 user function.
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Abstract
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 and a network, an ATM adaptation layer, an ATM layer and a physical later. In accordance with the invention the ATM adaptation later comprises on top a service-specific coordination function immediately between said higher user function and a service-specific connection-oriented protocol. Said service-specific coordination 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 later needed for conveying signalling messages of the layer 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.
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4 Claims
- 1. A signalling arrangement between network elements in a wireless telecommunication system having an asynchronous transfer mode (ATM)-based transmission system, the arrangement comprising a protocol stack which comprises, from top to bottom, a layer 3 user function for signalling between a wireless mobile station and a network, an ATM adaptation layer ATM layer and physical layer, wherein said ATM adaptation layer comprising on top a service-specific coordination function immediately between said layer 3 user function and a service-specific connection-oriented protocol, said service-specific coordination function comprising 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 said layer 3 user function.
Specification