Method and system for dynamic group radio using existing telephony infrastructure
First Claim
Patent Images
1. A group radio system, comprising:
- a plurality of remote units;
a wireline switched telephone network; and
a group radio controller connected to the wireline switched telephone network which receives messages from one of the plurality of remote units and repeats the messages to the plurality of remote units by way of a group channel, wherein the one of the plurality of remote units is a cellular telephone which communicates with the wireline switched telephone network by way of a cellular network, and wherein the one of the plurality of remote units is an anchor radio which transmits energy to the cellular network, thereby allowing the plurality of remote units to receive from a single channel of the cellular network.
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Abstract
A group radio system (10) uses a group radio controller (230) to connect and manage remote units (20-100) through a wireline switched telephony network. The group radio controller receives voice or data from any of the remote units and repeats this to the others who are connected to the group channel. The group radio controller also assigns remote units in communication with the group channel via satellites (300,400) and other remote units also in communication with the group channel via a terrestrial cellular host network (90) to be anchor radios. The use of anchor radios for these types of users significantly lowers the cost to the group for this type of global radio service.
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Citations
32 Claims
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1. A group radio system, comprising:
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a plurality of remote units; a wireline switched telephone network; and a group radio controller connected to the wireline switched telephone network which receives messages from one of the plurality of remote units and repeats the messages to the plurality of remote units by way of a group channel, wherein the one of the plurality of remote units is a cellular telephone which communicates with the wireline switched telephone network by way of a cellular network, and wherein the one of the plurality of remote units is an anchor radio which transmits energy to the cellular network, thereby allowing the plurality of remote units to receive from a single channel of the cellular network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of connecting a plurality of remote units to a group channel, comprising the steps of:
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a) the plurality of remote units each transmitting an identifier through a telephone network to a group radio controller; b) the group radio controller creating at least one group channel which connects the plurality of remote units together; and c) the group radio controller assigning a remote unit to be an anchor radio, wherein the anchor radio communicates with a wireline switched telephone network by way of a cellular network, and wherein the anchor radio transmits energy to the cellular network, thereby allowing the plurality of remote units to receive from a single channel of the cellular network. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method of maintaining a group channel, comprising the steps of:
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a) a first remote unit transmitting a disconnect request to a group radio controller; b) the group radio controller assigning a second remote unit to be an anchor radio if the first remote unit is an anchor radio; and c) the second remote unit transmitting an anchor accept message to the group radio controller. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method of maintaining a group channel, comprising the steps of:
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a) a first remote unit transmitting a disconnect request to a group radio controller; b) the group radio controller assigning a second remote unit to be an anchor radio if the first remote unit is an anchor radio; and c) the group radio controller assigning the anchor radio function in response to multiple remote units transmitting an anchor accept message. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification