Method and apparatus for detecting an offline radio resource in an interoperability system

1. A method comprising:

obtaining an indication, the indication being arranged to indicate that a donor radio is online with respect to an interoperability system, the indication further being arranged to indicate that the donor radio is transmitting, wherein obtaining the indication includes detecting at least one real-time transport protocol (RTP) packet on a multicast group associated with the donor radio;

determining if the indication is accurate, wherein determining if the indication is accurate includes determining if a notification is received from the donor radio, the notification being arranged to indicate that the donor radio is transmitting, and wherein determining if the indication is accurate further includes determining if the notification is received from the donor radio within a predetermined time period;

identifying a communication status for the donor radio as a fail if it is determined that the indication is not accurate, the communication status being identified within the interoperability system; and

identifying the communication status for the donor radio as a success if it is determined that the indication is accurate within the interoperability system.

2. The method of claim 1 wherein the indication is the notification, the notification being arranged to indicate that the donor radio is receiving.

3. The method of claim 2 wherein determining if the indication is accurate further includes determining if the at least one RTP packet is detected on the multicast group of the donor radio within the predetermined time period.

4. The method of claim 1 wherein the indication is obtained by a radio control server and the communication status of the donor radio is identified by the radio control server, the radio control server being included in the interoperability system.

5. A non-transitory computer-readable medium comprising computer program code, the computer program code, when executed, configured to:

obtain an indication, the indication being arranged to indicate that a donor radio is online with respect to an interoperability system, the indication further being arranged to indicate that the donor radio is transmitting, wherein the computer program code configured to obtain the indication is configured to detect at least one real-time transport protocol (RTP) packet on a multicast group associated with the donor radio;

determine if the indication is accurate, wherein the computer program code configured to determine if the indication is accurate is configured to determine if a notification is received from the donor radio, the notification being arranged to indicate that the donor radio is transmitting, and wherein the computer program code configured to determine if the indication is accurate is further configured to determine if the notification is received from the donor radio within a predetermined time period;

identify a communication status for the donor radio as a fail if it is determined that the indication is not accurate, the communication status being identified within the interoperability system; and

identify the communication status for the donor radio as a success if it is determined that the indication is accurate within the interoperability system.

6. The non-transitory computer-readable medium of claim 5 wherein the indication is the notification, the notification being arranged to indicate that the donor radio is receiving.

7. The non-transitory computer-readable medium of claim 6 wherein the computer program code configured to determine if the indication is accurate is further configured to determine if the at least one RTP packet is detected on the multicast group of the donor radio within the predetermined time period.

8. The non-transitory computer-readable medium of claim 5 wherein the indication is obtained by a radio control server and the communication status of the donor radio is identified by the radio control server, the radio control server being included in the interoperability system.

9. An apparatus comprising:

means for obtaining an indication, the indication being arranged to indicate that a donor radio is online with respect to an interoperability system, the indication further being arranged to indicate that the donor radio is transmitting, wherein the means for obtaining the indication include means for detecting at least one real-time transport protocol (RTP) packet on a multicast group associated with the donor radio;

means for determining if the indication is accurate, wherein the means for determining if the indication is accurate include means for determining if a notification is received from the donor radio, the notification being arranged to indicate that the donor radio is transmitting, and wherein the means for determining if the indication is accurate further include means for determining if the notification is received from the donor radio within a predetermined time period;

means for identifying a communication status for the donor radio as a fail if it is determined that the indication is not accurate, the communication status being identified within the interoperability system; and

means for identifying the communication status for the donor radio as a success if it is determined that the indication is accurate within the interoperability system.

10. An apparatus comprising:

a communications arrangement, the communications arrangement being configured to communicate with a donor radio;

a transmission issue sensing arrangement, the transmission issue sensing arrangement being configured to determine when the donor radio is expected to be online but is not online; and

a packet monitoring and detection arrangement, the packet monitoring and detection arrangement being arranged to detect when a real-time transport protocol (RTP) packet is present on a multicast group associated with the donor radio by obtaining an indication, the indication being a notification received from the donor radio, the transmission issue sensing arrangement further being configured to determine if the indication is accurate, wherein the sensing arrangement is configured to determine if the indication is accurate by determining if the indication is if the indication is received from the donor radio within a predetermined time period.

11. The apparatus of claim 10 wherein the apparatus is a radio control server of an interoperability system.

12. The apparatus of claim 10 wherein the apparatus is included in an interoperability system, and wherein the transmission issue sensing arrangement is configured to determine when the donor radio is expected to be online with respect to the interoperability system but is not online with respect to the interoperability system.