Half-duplex radio communication method, program and system thereof
First Claim
1. A half-duplex radio communication method comprising the steps of:
- accepting an application from a sender terminal for multicasting data to radio communication terminals whose present state meets a designated condition; and
multicasting data from the sender terminal to a plurality of communication control systems and the radio communication terminals whose present state meets a designated condition and belonging to the respective communication control systems.
1 Assignment
0 Petitions
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.
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Citations
20 Claims
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1. A half-duplex radio communication method comprising the steps of:
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accepting an application from a sender terminal for multicasting data to radio communication terminals whose present state meets a designated condition; and
multicasting data from the sender terminal to a plurality of communication control systems and the radio communication terminals whose present state meets a designated condition and belonging to the respective communication control systems. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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 radio communication terminals whose present state meets a designated condition; and
multicasting data from the sender terminal to a plurality of communication control systems and the radio communication terminals whose present state meets a designated condition and belonging to the respective communication control systems. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A half-duplex radio communication system comprising a plurality of communication control systems connected with each other, each including:
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a radio communication controller for controlling half-duplex radio communication; and
a present state acquisition section for acquiring information about the present states of radio communication terminals belonging to the communication control systems;
wherein, when the radio communication controller accepts an application for multicasting data to the radio communication terminals whose present state meets a designated condition, data are multicasted to the radio communication terminals whose present state meets a designated condition based on the information about the present states of the radio communication terminals retained by the respective present state acquisition sections of the plural communication control systems under the control of the radio communication controller. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification