Group call method, a system controller and a subscriber station in a radio system
First Claim
1. A group call method in a radio system comprising a plurality of base stations and subscriber stations, the group call method comprising:
- transmitting group call data to a subscriber station participating in a first ongoing group call to enable the subscriber station to engage in a second ongoing group call; and
performing one of continuing participation of the subscriber station in the first ongoing group call and selecting the second ongoing group call from among a plurality of group calls corresponding to the group call data transmitted to the subscriber station.
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Accused Products
Abstract
A group call method, a system controller and a subscriber station in a radio system comprising a plurality of base stations and subscriber stations. In order for a subscriber station to be able to select the group call in which it will participate from among a plurality of group calls while participating in a first group call, group call data are transmitted to the subscriber station during the first group call, by means of which data the subscriber station can engage in another ongoing group call, whereby the subscriber station continues to participate in the first group call or, if it desires, selects another group call from among the group calls whose group call data have been transmitted to the subscriber station and whose group call identifiers are simultaneously displayed on the display of the subscriber station.
64 Citations
21 Claims
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1. A group call method in a radio system comprising a plurality of base stations and subscriber stations, the group call method comprising:
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transmitting group call data to a subscriber station participating in a first ongoing group call to enable the subscriber station to engage in a second ongoing group call; and performing one of continuing participation of the subscriber station in the first ongoing group call and selecting the second ongoing group call from among a plurality of group calls corresponding to the group call data transmitted to the subscriber station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 21)
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8. A subscriber station of a radio system, comprising:
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a receiver-transmitter for establishing a radio link to the radio system; a memory unit for storing station and channel identifiers of base stations; a control unit for controlling the subscriber station and various units of the subscriber station; a user interface comprising a display and a keyboard to enable interaction between a user and the subscriber station; means for receiving group call data including a plurality of group call identifiers and for displaying the plurality of group call identifiers on the display of the user interface; and selecting means, by which the user can select a group call in which the subscriber station will engage from among the plurality of group call identifiers displayed on the display of the user interface. - View Dependent Claims (9, 10, 11, 14, 16, 17)
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12. A system controller of a radio system, said system controller comprising:
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an interface unit for transmitting calls and signalling messages to base stations of the radio system; a switching matrix for switching calls between subscriber stations or between subscriber stations and subscribers of a telecommunications network associated with the radio system; memory means for maintaining data on the subscriber stations, radio resources and ongoing group calls; a control unit for controlling the switching matrix and the base stations of the radio system; a group call control unit for checking whether there is a plurality of ongoing group calls in the radio system and, in response to the checking, if there is a plurality of ongoing group calls, for transmitting group call data or call information messages to the subscriber stations during a first ongoing group call to enable at least one of the subscriber stations to engage in a second ongoing group call. - View Dependent Claims (13, 18, 19, 20)
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Specification