The authors present an integrated framework for implementing connection-oriented mobile bearer services (MBS) to support personal communications over an asynchronous transfer mode (ATM)-based broadband integrated services digital network (B-ISDN) with an embedded intelligent network architecture characterized by intelligent mobile terminals. To support user terminal mobility, location-independent connection establishment and nondisruptive handoff between radio zones accessed from different network segments are required, subject to maintaining appropriate connection performance during user information exchange. The authors propose a new mobile virtual circuit (MVC) connection in the ATM layer with the above attributes, and a seamless handoff scheme using the MVC. They also propose an integrated per-call and per-cell congestion control mechanism for maintaining connection performance at each MVC connecting link. >

https://ieeexplore.ieee.org/iel2/3220/9154/00407160.pdf

Supporting user terminal mobility over an ATM/B-ISDN personal communications network

A digital mobile communications system developed by NTT is described. This system offers various user services corresponding to ISDN services involving effective nonvoice services. It includes a nonvoice service adapter which converts modem output to baseband signals for transmission over narrowband digital radio links, and a hitless handover scheme which offers high-quality data communication services even under roaming conditions resulting from decreases in cell size. A mobile communication exchange (MCX) can be constructed by applying newly designed mobile signal equipment to the existing digital switching system. >

Digital mobile radio switching system

Digital switching controls for integrated-services digital mobile radio communications are discussed. The digital radio networks controls radio terminals by way of the radio multiaccess subscriber line. The network also handles tracking switching for call setup and handover for voice and data communications. The basic concepts of the signal reference model, layer configuration, and protocol structure of the user/network interface are described. >

http://ieeexplore.ieee.org/iel2/717/971/00026047.pdf

Digital mobile communications switching

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Digital mobile communications switching