Call processing method and apparatus for effective QoS control in mobile communication system

A call processing method in a mobile communication system, where the mobile communication system has a first mobile station with a call in progress, a second mobile station, and a base station that serves both the first and second mobile stations, comprising the steps of:

• receiving a call set-up request from a second mobile station;
• determining a service level of a call requested by the call set-up request, if the base station does not have enough available resources to accommodate the requested call;
• and
• if the service level of the requested call is higher than a service level of the call in progress of the first mobile station:
• transmitting, by the base station, a waiting message to the first mobile station;
• discontinuing, by the first mobile station, data transmission in response to the waiting message;
• accepting, by the base station, the requested call set-up;
• servicing, by the base station, the requested call of second mobile station;
• transmitting, by the base station, a reestablishment message to the first mobile station, if the base station secures enough resources to resume the suspended call;
• and
• resuming, by the first mobile station, data transmission in response to the reestablishment message.

A call processing method in a mobile communication system having a first mobile station with a call in progress, a second mobile station, and a base station that serves the first and second mobile stations, comprising the steps of:

• receiving a call set-up request from a second mobile station;
• determining a service level of a call requested by the call set-up request, if the base station does not have enough available resources to accommodate the requested call;
• and
• if the service level of the requested call is higher than a service level of the call in progress of the first mobile station:
• transmitting, by the base station, a waiting message to the first mobile station;
• discontinuing, by the first mobile station, data transmission in response to the waiting message;
• accepting, by the base station, the requested call set-up;
• servicing, by the base station, the requested call of second mobile station;
• and
• resuming, by the first mobile station, data transmission after a predetermined time period.

A mobile communication system, comprising:

• a first mobile station with a call in progress to a base station;
• a second mobile station that transmits a call set-up request to the base station;
• and
• the base station for, if the base station does not have enough available resources to accommodate the requested call, and if a service level of the requested call is higher than a service level of the call in progress of the first mobile station, suspending the call in progress from the first mobile station and for servicing the requested call of the second mobile station, and for resuming, by the first mobile station, data transmission after a predetermined time period.

A mobile communication system, comprising:

• at least one first mobile station with a call in progress to a base station;
• a second mobile station that transmits a call set-up request to the base station;
• and
• the base station for, if a service level of the requested call is higher than a service level of the at least one call in progress of the at least one first mobile station, and if the base station does not have enough available resource to accommodate the requested call, suspending the at least one call in progress with a lower service level, and for servicing the requested call of the second mobile station, and for resuming, by the first mobile station, data transmission after a predetermined time period.