Short message delivery system
AssigneeNEC Corporation
InventorAyaka Uchimura
Life of this patent
Estimating the term…
Abstract
A short message delivery system has: mobile terminal devices each having a function of generating and receiving a short message; ground facilities each including a radio station connected to a mobile terminal device by radio means; and a short message center for receiving the short message issued from a mobile terminal device via a ground facility and transmitting the received short message to a specified transmission destination. The short message center includes retry means responsive to a failure of the transmission of the short message for retrying the transmission according to a communication state of a mobile terminal device of reception side and a term of validity of preservation of the short message.
Claims3
A message delivery system comprising:
- mobile terminal devices, each configured to convey speech or communication from a place where the mobile terminal device is located by radio means, and to generate and receive a message;
- ground facilities, each including a radio station connected to a mobile terminal device by radio means;
- and
- a message center configured to receive the message issued from a mobile terminal device via a ground facility and transmit the received message to a specified transmission destination, the message center including retry means responsive to a failure of the transmission of the message configured to retry the transmission according to a communication state of a mobile terminal device of reception side and a term of validity of preservation of the message,
- wherein the retry means comprises:
- a transmission failure message preservation section configured to provide a message transmission which has failed with transmission information, set a priority, and store the message;
- a retry control section configured to control retry transmission of the message transmission which has failed;
- a timer configured to set an interval of the retry;
- a retry counter configured to count the number of times of execution of the retry;
- and
- a control section configured to control reception and transmission of the message and to manage the whole retry means, and
- wherein
- the retry means is configured to change the number of times of retry according to a communication state of a mobile terminal device of a transmission destination of the message and a term of validity of the message;
- the retry means is configured to shorten the retry interval when a communication failure is judged to be an occurrence of temporary error due to the communication state;
- the retry means is configured to execute the retry a preset number of times;
- the retry means is configured to change the priority of the retry to a high value when the term of validity is near at hand;
- and
- the retry a low value when the number of times of the retry has exceeded the preset number of times.
Dependencies are inferred from the claim text.