Trunking system for CDMA wireless communication
First Claim
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1. A CDMA communication system, comprising:
- a plurality of base transceiver stations spatially distributed to communicate with mobile communication devices via radio links;
a plurality of base station controllers, each coupled to a plurality of base transceiver stations;
a mobile switching center connected to couple said base station controllers to a public telephone network;
a data communication system comprising (1) a plurality of packet control function devices respectively connected to said base station controllers to transmit data packets to and from the mobile communication devices via said base transceiver stations, and (2) a packet data serving node connected to said packet control function devices to provide packet data services to the-mobile communication devices; and
a trunking system comprising (1) a plurality of dispatching clients respectively connected to said base station controllers to transmit data packets of group calls to and from mobile communication devices of groups of subscribers where members of each group share a common trunking data link for transmission of data packets, and (2) at least one dispatching server connected to said packet data network to communicate with said dispatching clients, wherein said dispatching server and said dispatching clients are operable in combination to provide a push-to-talk function for a group call within each group.
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Abstract
Methods and systems for implementing trunking techniques in CDMA systems for handling group calls and push-to-talk services.
80 Citations
69 Claims
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1. A CDMA communication system, comprising:
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a plurality of base transceiver stations spatially distributed to communicate with mobile communication devices via radio links;
a plurality of base station controllers, each coupled to a plurality of base transceiver stations;
a mobile switching center connected to couple said base station controllers to a public telephone network;
a data communication system comprising (1) a plurality of packet control function devices respectively connected to said base station controllers to transmit data packets to and from the mobile communication devices via said base transceiver stations, and (2) a packet data serving node connected to said packet control function devices to provide packet data services to the-mobile communication devices; and
a trunking system comprising (1) a plurality of dispatching clients respectively connected to said base station controllers to transmit data packets of group calls to and from mobile communication devices of groups of subscribers where members of each group share a common trunking data link for transmission of data packets, and (2) at least one dispatching server connected to said packet data network to communicate with said dispatching clients, wherein said dispatching server and said dispatching clients are operable in combination to provide a push-to-talk function for a group call within each group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A CDMA communication system, comprising:
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a CDMA network having a mobile switching center connected to a public telephone switching network, operable to provide voice and data call services to mobile communication devices;
a packet data system coupled to said CDMA network to provide packet data services to the mobile communication devices; and
a trunking system coupled to said CDMA network and a packet data network to provide group call services to the mobile communication devices via the packet data network, said trunking system comprising (1) a plurality of dispatching clients in communication with said CDMA network to transmit data packets of a group call to and from mobile communication devices of a trunking group where members of each trunking group share a common trunking data link for transmission of data packets, and (2) a dispatching server connected to said packet data network and in communication with said dispatching clients to process group calls. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52)
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53. A method for providing group call services in a CDMA communication system, the method comprising:
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providing a plurality of dispatching clients in a CDMA system to dispatch group call requests via a packet data network to a dispatching server that controls and manages group calls;
using a common trunking message link through the packet data network to transmit trunking messages between a dispatching client and the dispatching server; and
using a single trunking data link to each trunking group between the dispatching server and each dispatching client such that a plurality of group members share the single trunking data link in transmitting user data over the packet data network. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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65. A CDMA communication system, comprising:
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a CDMA trunking system coupled to a CDMA network and a packet data network to provide group call services to mobile communication devices in the CDMA network via the packet data network, said CDMA trunking system comprising;
a plurality of dispatching clients in communication with the CDMA network to transmit data packets of a group call to and from mobile communication devices of a trunking group where members of each trunking group share a common trunking data link for transmission of data packets, and a dispatching server connected to said packet data network and in communication with said dispatching clients to process group calls. - View Dependent Claims (66, 67, 68, 69)
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Specification