Location based messaging

1. A method of processing a message, the method comprising:

receiving a message from a sender, the message directed to a recipient;

prior to delivery of the message to the recipient, processing the message including determining if a location-request code is appended to a destination number for the recipient included in the message and if so, then determining a current location of the sender, where the location-request code is an indication that the current location of the sender is to be included in the message; modifying the message to include the current location of the sender if a location-request code is appended to the destination number for the recipient; determining if a current location of the recipient can be included in a message originating from the recipient, and if a current location of the recipient can be included, further modifying the message to add a location-request code to a sender number included in the message, where the location-request code is a request to include the recipient's current location in a reply message to the message; and

transmitting the message to the recipient.

2. The method of claim 1 , wherein transmitting the message to a recipient comprises transmitting the message to a recipient associated with the destination number.

3. The method of claim 1 , wherein the message is a multi-media message.

4. The method of claim 1 , wherein the message is a short message.

5. The method of claim 1 , further comprising:

based on the location-request code, transmitting the message to a location server;

receiving from the location sewer the modified message;

wherein, the location server performs the steps of determining a location of the sender and modifying the message to include the location of the sender.

6. The method of claim 5 , further comprising:

the location server further modifying the message to remove the location-request code from the destination number.

7. The method of claim 5 , wherein the location server performing the step of determining a current location of the sender comprises sending a request from the location server to a location-enabled server and receiving at the location server a current location of the sender from the location-enabled server.

8. The method of claim 5 , wherein the location server performing the step of determining a current location of the sender comprises retrieving a current location for the sender from a cache of location information.

9. The method of claim 8 , wherein retrieving a current location for the sender from a cache of location information further comprises:

receiving location information from a plurality of network probes about current locations of a plurality of network users including the sender;

periodically caching the location information for the plurality of network users including the sender; and

retrieving at the location server a current location for the sender from the cache of location information.

10. The method of claim 1 , wherein determining a current location of the sender comprises:

querying a location enabled server for a current location of the sender; and

receiving a current location of the sender from the location enabled server.

11. The method of claim 1 , wherein determining a current location of the sender comprises:

retrieving a current location for the sender from a cache of location information.

12. The method of claim 11 , wherein retrieving a current location for the sender from a cache of location information comprises:

receiving location information from a plurality of network probes about current locations for a plurality of network users including the sender;

periodically caching the location information for the plurality of network users including the sender; and

retrieving a current location for the sender from the cache of location information.

13. A method of processing a message, comprising: receiving a message from a first messaging service center, the message directed from a sender to a recipient; processing the message to determine if a location-request code is included in the message, and if so, then determining a current location of a sender of the message, where the location-request code is an indication that the current location of the sender is to be included in the message; prior to delivering the message to the recipient, modifying the message to include the current location of the sender if a location-request code is included in the message; determining if a current location of the recipient can be included in a message originating from the recipient, and if a current location of the recipient can be included, further modifying the message to add a location-request code to a sender number included in the message, where the location-request code is a request to include the recipient's current location in a reply message to the message; and transmitting the message to a second messaging service center for delivery to the recipient.

14. The method of claim 13 , wherein the message is a short message, and the first messaging service center and the second messaging service centers are short messaging service centers.

15. The method of claim 13 , wherein the message is a multi-media message, and the first messaging service center and the second messaging service centers are multi-media messaging service centers.

16. The method of claim 13 , wherein the first messaging service center and the second messaging service center are the same messaging service centers.

17. The method of claim 13 , wherein the first messaging service center services a mobile network used by a sender of the message and the second messaging service center services a mobile network used by a recipient of the message.

18. The method of claim 13 , wherein the message includes a location-request code that is added to a destination number, the method further comprising:

before transmitting the message to the second messaging service center, further modifying the message to remove the location-request code from the destination number.

19. The method of claim 13 , wherein determining a current location of the sender comprises sending a request to a location-enabled server and receiving a current location of the sender from the location-enabled server.

20. The method of claim 13 , wherein determining a current location of the sender comprises retrieving a current location for the sender from a cache of location information.

21. The method of claim 20 , wherein retrieving a current location for the sender from a cache of location information further comprises:

receiving location information from a plurality of network probes about current locations for a plurality of network users including the sender;

periodically caching the location information for the plurality of network users including the sender; and

retrieving a current location for the sender from the cache of location information.

22. A method of processing a message, comprising: inputting a message into a mobile station, the message directed from the mobile station to a recipient messaging entity; inputting into the mobile station a location-request code and a destination number, where the location-request code specifies a request to modify the message prior to delivery to the recipient messaging entity to include a current location of the mobile station in the message and where the destination number corresponds to the recipient messaging entity; and transmitting the message from the mobile station to a messaging service center for delivery to the recipient messaging entity, where prior to transmission of the message, a determination is made as to whether a current location of the recipient can be included in a message originating from the recipient, such that if a current location of the recipient can be included, the message is modified to add a location-request code to a sender number included in the message, where the location-request code is a request to include the recipient's current location in a reply message to the message.

23. The method of claim 22 , wherein the message is a short message.

24. The method of claim 22 , wherein the message is a multi-media message.

25. A system for processing a message, comprising: a sender mobile station configured to receive a user input and based on the user input transmit a message over a mobile network for delivery to a recipient messaging entity associated with a destination number, where the message includes a request to include a current location of the sender mobile station in the message; a messaging service center configured to: receive from a sender mobile station a message; process the message to determine if the message includes a request to include a current location of the sender mobile station in the message; transmit the message to a location server; receive a modified message from a location server, the modified message including a request to include the recipient's current location in a reply message to the message when a current location of the recipient can be included in a message originating from the recipient; transmit the modified message to a recipient messaging entity; a location server configured to: receive a message from a messaging center, the message including a request to include a current location of a sender mobile station in the message; determine a current location of the sender mobile station; modify the message to include the current location of the sender mobile station; determine if a current location of the recipient can be included in a message originating from the recipient, and if a current location of the recipient can be included, further modify the message to include a request to include the recipient's current location in a reply message to the message; and transmit the modified message to a messaging center; and a recipient messaging entity configured to receive a modified message from the location server, the modified message including a current location of a sender mobile station from which the message originated, and a request to include the recipient's current location in a reply message to the message when a current location of the recipient can be included in a message originating from the recipient.

26. The system of claim 25 , wherein:

the message is a short message, and

the messaging service center is a short messaging service center.

27. The system of claim 25 , wherein:

the message is a multi-media message, and

the messaging service center is a multi-media messaging service center.

28. A method of processing a multi-media message, comprising: receiving a multi-media message originating from a sender mobile station, the multi-media message including destination information; processing the multi-media message to determine if a location-request code is included and if so, then determining a current location of the sender mobile station, where a location-request code is an indication that the current location of the sender mobile station is to be included in the multi-media message; prior to delivery of the multi-media message to a recipient, receiving from the location server a modified multi-media message including the current location of the sender mobile station if a location-request code is included with the multi-media message; determining if a current location of the recipient can be included in a multi-media message originating from the recipient, and if a current location of the recipient can be included, further modifying the multi-media message to add a location-request code to a sender number included in the multi-media message, where the location-request code is a request to include the recipient's current location in a reply message to the multi-media message; and transmitting the multi-media message to the recipient based on the destination information.

29. The method of claim 28 , wherein the transmitting step further comprises:

accessing a user profile associated with the sender mobile station;

based on the user profile and the destination information, determining an e-mail address associated with the recipient; and

transmitting the modified multi-media message to the recipient e-mail address.

30. The method of claim 28 , wherein determining a current location of the sender mobile station comprises:

querying a location enabled server for a current location of the sender mobile station; and

receiving a current location of the sender mobile station from the location enabled server.

31. The method of claim 28 , wherein determining a current location of the sender mobile station comprises:

retrieving a location for the sender mobile station from a cache of current location information.

32. The method of claim 31 , wherein retrieving a current location for the sender mobile station from a cache of location information comprises:

receiving location information from a plurality of network probes about current locations for a plurality of network users including the sender mobile station;

periodically caching the location information for the plurality of network users including the sender mobile station; and

retrieving a current location for the sender mobile station from the cache of location information.