초록 ▼

A system and method of simultaneously conducting a data transfer and a voice call between a mobile station and a radio telecommunications network having a mobile switching center (MSC) which serves the mobile station. A first embodiment includes a landline digital simultaneous voice and data (DSVD)

A system and method of simultaneously conducting a data transfer and a voice call between a mobile station and a radio telecommunications network having a mobile switching center (MSC) which serves the mobile station. A first embodiment includes a landline digital simultaneous voice and data (DSVD) modem associated with the mobile station which generates DSVD source signal and line negotiation protocols. The DSVD source signal and line negotiation protocols are encapsulated into circuit mode Radio Link Protocol (RLP) signals and transmitted to the MSC. An interworking function (IWF) associated with the MSC translates the circuit mode RLP signals into signals in a landline telecommunications protocol. In another embodiment, the voice call is carried over the air interface from the mobile station to the network in one timeslot, and the data transfer is carried in at least one additional timeslot on the same voice channel. In other embodiments, two voice channels may be allocated to the same mobile station. The voice call to a first party is carried from the mobile station to the network on one voice channel, and the data transfer to the first or a second party is carried on the second voice channel. The MSC hands off the two voice channels together, but releases them individually when either the voice call or the data transfer is completed.

대표청구항 ▼

[ What is claimed is:] [1.] A system for interworking digital simultaneous voice and data (DSVD) modems with a radio telecommunications network having a mobile switching center (MSC) which communicates with a mobile station utilizing a circuit mode Radio Link Protocol (RLP), said system comprising:a

[ What is claimed is:] [1.] A system for interworking digital simultaneous voice and data (DSVD) modems with a radio telecommunications network having a mobile switching center (MSC) which communicates with a mobile station utilizing a circuit mode Radio Link Protocol (RLP), said system comprising:a DSVD modem associated with said mobile station, said DSVD modem generating DSVD source signal and line negotiation protocols;means for encapsulating DSVD source signal and line negotiation protocols without modification into circuit mode RLP signals, said means for encapsulating including means for multiplexing said DSVD source signal and line negotiation protocols into a single voice channel;an interworking function associated with said MSC for translating said circuit mode RLP signals into signals in a landline telecommunications protocol; andmeans for modulating and transmitting said signals in a landline telecommunications protocol to a landline telecommunications network.