Emergency call control apparatus for mobile communication system

An emergency call control apparatus for a mobile communication system including at least a first base station having a service zone, a first base station controller for controlling the first base station, an exchange for mobile communications which is connected to the first base station controller, a second base station having a service zone adjacent to the service zone of the first base station, and a second base station controller for controlling the second base station, the second base station controller being connected to the exchange, comprising:

• confirming means in said exchange, for confirming how radio channels are used in at least said first base station controller and said second base station controller when a request to originate an emergency call is received from a mobile station through said first base station and said first base station controller;
• channel securement requesting means in said exchange, for selecting one of idle radio channels confirmed in said second base station controller by said confirming means, and requesting, through the exchange, said second base station controller to secure said selected one of the idle radio channels;
• securing means in said second base station controller, for securing a requested radio channel according to the request from said channel securement requesting means;
• and
• connection requesting means in said first base station controller, for requesting said second base station controller through said exchange to make a radio connection between said mobile station and said second base station through the radio channel secured by said securing means when said mobile station needs a handoff to said second base station.

An emergency call control apparatus for a mobile communication system including at least a first base station having a service zone, a first base station controller for controlling the first base station, an exchange for mobile communications which is connected to the first base station controller, a second base station having a service zone adjacent to the service zone of the first base station, and a second base station controller for controlling the second base station, the second base station controller being connected to the exchange, comprising:

• confirming means in said exchange, for confirming how radio channels are used in at least said first base station controller and said second base station controller when a request to originate an emergency call is received from a mobile station through said first base station and said first base station controller;
• connection requesting means in said exchange, for selecting one of idle radio channels confirmed in said second base station controller by said confirming means, and requesting said second base station controller to make a radio connection between said mobile station and said second base station through said selected one of the idle radio channels;
• and
• connecting means in said second base station controller, for making a radio connection between said mobile station and said second base station through a requested radio channel according to a request from said connection requesting means.

An emergency call control apparatus for a mobile communication system including at least a first base station having a service zone, a first base station controller for controlling the first base station, an exchange for mobile communications which is connected to the first base station controller, a second base station having a service zone adjacent to the service zone of the first base station, and a second base station controller for controlling the second base station, the second base station controller being connected to the exchange, comprising:

• information collecting means in said exchange, for collecting information on how radio channels are used in at least said second base station controller and transmitting the information to said first base station controller when a request to originate an emergency call is received from a mobile station through said first base station and said first base station controller;
• channel securement requesting means in said first base station controller, for selecting one of idle radio channels in said second base station controller based on the information from said information collecting means, and requesting said second base station controller through the exchange to secure said selected one of the idle radio channels;
• securing means in said second base station controller, for securing a requested radio channel according to a request from said channel securement requesting means;
• and
• connection requesting means in said first base station controller, for requesting said second base station controller through said exchange to make a radio connection between said mobile station and said second base station through a radio channel secured by said securing means when said mobile station needs a handoff to said second base station.

An emergency call control apparatus for a mobile communication system including at least a first base station having a service zone, a first base station controller for controlling the first base station, an exchange for mobile communications which is connected to the first base station controller, a second base station having a service zone adjacent to the service zone of the first base station, and a second base station controller for controlling the second base station, the second base station controller being connected to the exchange, comprising:

• information collecting means in said exchange, for collecting information on how radio channels are used in at least said second base station controller and transmitting the information to said first base station controller when a request to originate an emergency go call is received from a mobile station through said first base station and said first base station controller;
• connection requesting means in said first base station controller, for selecting one of idle radio channels in said second base station controller based on the information from said information collecting means, and requesting said second base station controller through the exchange to make a radio connection between said mobile station and said second base station through said selected one of the idle radio channels;
• and
• connecting means in said second base station controller, for making a radio connection between said mobile station and said second base station through a requested radio channel according to a request from said connection requesting means.