Patent ID: 9295091
Filing Date: 2016-03-22
CPC Classification: H04W

Claim Text:
1. A radio communication system comprising: an originating terminal configured to send a paging signal to call a terminating terminal; and a communication control apparatus configured to control direct communication between the originating terminal and the terminating terminal, wherein the originating terminal includes an originating-side paging processing unit configured to send the communication control apparatus the paging signal containing a direct communication request requesting for direct communication with the terminating terminal, and the communication control apparatus includes: a paging signal transmission unit configured to send the terminating terminal a paging signal containing information indicating that the originating terminal is requesting direct communication and configuration information on a communication environment necessary for the direct communication, a determination unit configured to determine whether the direct communication is executable by the terminating terminal or not based on the paging signal received from the originating terminal, wherein the determination unit determines whether the direct communication is executable or not based on a distance between the originating terminal and the terminating terminal, and a network-side notification unit configured to notify the originating terminal of an affirmative notification indicating that the direct communication is executable by the terminating terminal, when the determination unit determines that the direct communication is executable, wherein the originating-side paging processing unit directly calls the terminating terminal based on the affirmative notification notified of by the communication control apparatus, wherein when a distance between the originating terminal and the terminating terminal is equal to or smaller than a predetermined distance, the determination unit determines that the direct communication is executable on condition that the on originating terminal and the terminating terminal send radio signals at a radio field intensity of a value equal to or smaller than a predetermined value which depends on the distance, and wherein a network-side notification unit notifies the originating terminal of an affirmative notification containing the predetermined value.