Method for providing enhanced floor control for group calls between a dispatch communications network and a cellular telephone communications network
First Claim
1. A method for providing enhanced floor control between a dispatch communications network and a cellular telephone communications network comprising the steps:
- establishing at least one first communications device operating in the dispatch communications network;
establishing at least one second communications device operating in the cellular telephone communications network;
transmitting a talk reservation request from the at least one second communications device to a network control entity for establishing communications on the dispatch communications network;
transmitting a talk reservation request from the at least one first communications device to the network control entity;
transmitting a transmit delay message by the network control entity to the second communications device when a talk reservation request has first been granted to the first communications device;
transmitting a transmit grant message from the network control entity to the second communications device when the first communications device switches from a transmit mode to receive mode; and
wherein the transmit grant message signals the second communications device to grant access to the dispatch communications network without sending another talk reservation request.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for providing enhanced floor control (500) between a dispatch communications network and a cellular telephone communications network includes transmitting a transmit delay message (517) by a network control entity (505) to a communications device (501) in the cellular telephone network when a talk reservation request (515) has first been granted to a communications device (507) in the dispatch network. A transmit grant message (521) is then transmitted from the network control entity (505) to the communications device (501) in the cellular telephone network when the communications device in the dispatch network switches from a transmit mode to receive mode (507). The transmit grant message signals the communications device (501) in the cellular telephone network enabling it to access the dispatch communications network without sending a second talk reservation request.
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Citations
16 Claims
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1. A method for providing enhanced floor control between a dispatch communications network and a cellular telephone communications network comprising the steps:
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establishing at least one first communications device operating in the dispatch communications network;
establishing at least one second communications device operating in the cellular telephone communications network;
transmitting a talk reservation request from the at least one second communications device to a network control entity for establishing communications on the dispatch communications network;
transmitting a talk reservation request from the at least one first communications device to the network control entity;
transmitting a transmit delay message by the network control entity to the second communications device when a talk reservation request has first been granted to the first communications device;
transmitting a transmit grant message from the network control entity to the second communications device when the first communications device switches from a transmit mode to receive mode; and
wherein the transmit grant message signals the second communications device to grant access to the dispatch communications network without sending another talk reservation request. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for controlling floor communications between subscribers operating in a dispatch communications network and a subscriber operating a cellular telephone from a cellular communications network interfaced with the dispatch communications network comprising the steps of:
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sending a talk reservation request from a cellular telephone to a network control entity for the dispatch communications network;
sending a talk reservation request from a radio transceiver operating in the dispatch communications network to the network control entity;
sending a transmit delayed message to the cellular telephone from the network control entity when the talk reservation request from the radio transceiver is received prior to the talk reservation request from the cellular telephone;
sending a transmit grant message from the network control entity to the cellular telephone when the network control entity detects the radio transceiver has stopped transmitting; and
wherein the transmit grant message allows the cellular telephone to access the dispatch network when sending another talk reservation request to the network control entity. - View Dependent Claims (9, 10, 11, 12)
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13. A method for providing enhanced floor control between stations operating in a dispatch radio network and subscribers operating remotely in the dispatch radio network using a cellular telephone network comprising the steps of:
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transmitting a talk reservation request from a cellular telephone operating through an Internet protocol (IP) gateway to a network control entity for the dispatch radio network;
transmitting a talk reservation request from a radio transceiver in the dispatch network to a network control entity;
granting a request to transmit from the network control entity to the radio transceiver if the talk reservation request from the radio transceiver is received by the network control entity prior to the talk reservation request sent by the cellular telephone;
sending a transmit delayed message from the network control entity to the cellular telephone;
sending a transmit grant message from the network control entity to the cellular telephone when the network control entity detects the radio transceiver is no longer transmitting; and
wherein the cellular telephone can transmit over the radio dispatch network without sending an additional talk reservation request to the network control entity. - View Dependent Claims (14, 15, 16)
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Specification