| 摘要 |
In a multi-point mobile radio broadcast network, the multiple mobile radios can have personality information reprogrammed via a broadcast method, rather than on a one-to-one basis. A communication manager, which controls the communications between the various mobile radios can change the personality information contained in each radio by broadcasting that information to the radios as a group. After receiving the new personality information, a processor within the mobile radios can remove the unique identification codes associated with that particular radio from the old personality information, imported into the new personality information communicated to it by the communication manager, and store the new personality information with the newly incorporated unique identification codes into a local memory. The protocol for broadcasting the personality information to the mobile radios is important to ensure that the mobile radios receive the new personality information. It is also important that the communication manager have assurances that the mobile radios properly receive the new personality information, without requiring the mobile radios to communicate multiple acknowledgements one-by-one to the communication manager. Accordingly, broadcast sessions are initiated by a repetitious broadcast control signal, then group data is broadcast without acknowledgements to the mobile radios. On the last data broadcast, the communication manager requests an acknowledgement, which is returned one-by-one from each mobile radio. Finally, a disconnect broadcast session control signal is then repetitiously broadcast to the radios. |
