Half-duplex radio communication method, program and system thereof
First Claim
1. A half-duplex radio communication method comprising:
- accepting an application from a sender terminal for multicasting data to a multicast group formed from each terminal of first radio communication terminals belonging to a first cellular network and second radio communication terminals belonging to a second cellular network whose present state meets a designated condition;
automatically registering the present state of each terminal of the first radio communication terminals of the first cellular network and the second radio communication terminals of the second cellular network; and
multicasting data from the sender terminal to the multicast group formed from each terminal of the first radio communication terminals of the first cellular network and the second radio communication terminals of the second cellular network when the present state of the respective terminal meets the designated condition,wherein the present state is a positional condition of each respective radio communication terminal,wherein the second cellular network is different from the first cellular network, andwherein forming the multicast group from each terminal of first radio communication terminals belonging to a first cellular network and second radio communication terminals belonging to a second cellular network whose present state meets a designated condition is based only on the positional condition of each respective radio communication terminal meeting the designated condition.
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Accused Products
Abstract
A half-duplex radio communication method, a program and a system enabling multicasting, for example, in an emergency for radio communication terminals belonging to different carrier systems if they meet designated condition while saving an operator the bother of inputting destinations. After accepting an application for emergency multicasting, a CUG server requests a presence server to search for data of radio communication terminals meeting the positional condition designated by a sender and receives the data. In this operation, the CUG server searches a present state table in the presence server, picks up user information of the radio communication terminals as the destinations of the emergency multicasts, based on the positional information. Then, a CUG is formed based on the picked up user information and registered as the CUG for the emergency multicasting.
21 Citations
16 Claims
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1. A half-duplex radio communication method comprising:
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accepting an application from a sender terminal for multicasting data to a multicast group formed from each terminal of first radio communication terminals belonging to a first cellular network and second radio communication terminals belonging to a second cellular network whose present state meets a designated condition; automatically registering the present state of each terminal of the first radio communication terminals of the first cellular network and the second radio communication terminals of the second cellular network; and multicasting data from the sender terminal to the multicast group formed from each terminal of the first radio communication terminals of the first cellular network and the second radio communication terminals of the second cellular network when the present state of the respective terminal meets the designated condition, wherein the present state is a positional condition of each respective radio communication terminal, wherein the second cellular network is different from the first cellular network, and wherein forming the multicast group from each terminal of first radio communication terminals belonging to a first cellular network and second radio communication terminals belonging to a second cellular network whose present state meets a designated condition is based only on the positional condition of each respective radio communication terminal meeting the designated condition. - View Dependent Claims (2, 3, 4, 5)
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6. A tangible processor-readable medium incorporating a half-duplex radio communication program for making a computer perform the processes of:
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accepting an application from a sender terminal for multicasting data to a multicast group formed from each terminal of first radio communication terminals belonging to a first cellular network and second radio communication terminals belonging to a second cellular network whose present state meets a designated condition; automatically acquiring the present state of each terminal of the first radio communication terminals of the first cellular network and the second radio communication terminals of the second cellular network; and multicasting data from the sender terminal to the multicast group formed from each terminal of the first radio communication terminals of the first cellular network and the second radio communication terminals of the second cellular network when the present state of the respective terminal meets the designated condition, wherein the present state is a positional condition of each radio communication terminal, wherein the second cellular network is different from the first cellular network, and wherein forming the multicast group from each terminal of first radio communication terminals belonging to a first cellular network and second radio communication terminals belonging to a second cellular network whose present state meets a designated condition is based only on the positional condition of each respective radio communication terminal meeting the designated condition. - View Dependent Claims (7, 8, 9, 10)
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11. A half-duplex communication system connected to communicate with a plurality of cellular networks, including a first cellular network and a second cellular network, the half-duplex radio communication system comprising:
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a radio communication controller for controlling half-duplex radio communication; and a first present acquisition section operable to automatically acquire information about a present state of each radio communication terminal belonging to the first cellular network, and a second present state acquisition section operable to automatically acquire information about the present state of each radio communication terminal belonging to the second cellular network, wherein, when the radio communication controller accepts an application for multicasting data to a multicast group formed from each terminal of the first and second radio communication terminals whose present state meets a designated condition, the data are multicasted to the multicast group formed from each terminal of the radio communication terminals of the first and second cellular networks whose present state meets the designated condition based on the information about the present states of the radio communication terminals acquired by the respective present state acquisition sections of the first cellular network and the second cellular network under the control of the radio communication controller, and wherein the present state is a positional condition of each radio communication terminal; wherein the second cellular network is different from the first cellular network, and wherein forming the multicast group from each terminal of first radio communication terminals belonging to a first cellular network and second radio communication terminals belonging to a second cellular network whose present state meets a designated condition is based only on the positional condition of each respective radio communication terminal meeting the designated condition. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification