| 摘要 |
A method for performing a voice private call service (VPCS) includes: requesting by a calling MS an access network to assign a dedicated signalling channel to the calling MS, in response to initiating a VPCS by the calling MS, and requesting, through the dedicated signalling channel, to set up a Signalling Connection Control Part (SCCP) connection between the access network and a core network; assigning by a network side via the dedicated signalling channel and the SCCP connection, a group call channel to the calling MS for transmitting information, paging, through a Paging Channel (PCH), a called MS, and assigning a group call channel to the called MS for receiving the information; and connecting the calling MS and the called MS through the group call channel assigned to the calling MS and the group call channel assigned to the called MS for performing the VPCS. A device for performing the VPCS includes a dedicated signalling channel assignment unit, an SCCP connection setup unit, a paging unit, and a group call channel assignment unit. The VPCS based on the GSM-R can be performed in accordance with embodiments of the invention.
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