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A method, system and computer program product for instant message communication in a wireless and non-wireless environment. A message is sent from a mobile unit device over a wireless communication network. The message includes a destination address, information associated with the mobile unit devic

A method, system and computer program product for instant message communication in a wireless and non-wireless environment. A message is sent from a mobile unit device over a wireless communication network. The message includes a destination address, information associated with the mobile unit device's user, message content and message address. If, according to information previously stored for the mobile unit device's user at the instant message system, the destination address is associated with an instant message function, the associated instant message function is executed at the instant message system using the information contained in the message content, if required as determined by the associated instant message function. If, according to information previously stored for the mobile unit device's user at the instant message system, the destination address is associated with an instant message name, an instant message is created according to the message content and is sent to the user with the associated instant message name. For instant messages sent or received by a mobile unit device with known buddies, the instant message is optimized by tagging the instant message with a routing phone number that is unique to the mobile unit device and buddy combination, whose identity is stored both in the mobile unit device address book and in the instant message routing server.

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A method, system and computer program product for instant message communication in a wireless and non-wireless environment. A message is sent from a mobile unit device over a wireless communication network. The message includes a destination address, information associated with the mobile unit devic

A method, system and computer program product for instant message communication in a wireless and non-wireless environment. A message is sent from a mobile unit device over a wireless communication network. The message includes a destination address, information associated with the mobile unit device's user, message content and message address. If, according to information previously stored for the mobile unit device's user at the instant message system, the destination address is associated with an instant message function, the associated instant message function is executed at the instant message system using the information contained in the message content, if required as determined by the associated instant message function. If, according to information previously stored for the mobile unit device's user at the instant message system, the destination address is associated with an instant message name, an instant message is created according to the message content and is sent to the user with the associated instant message name. For instant messages sent or received by a mobile unit device with known buddies, the instant message is optimized by tagging the instant message with a routing phone number that is unique to the mobile unit device and buddy combination, whose identity is stored both in the mobile unit device address book and in the instant message routing server. cedes the center index, the location information indicates that the mobile station is located closer to the adjacent base station than the service base station, and when the determined search window index falls behind the center index, the location information indicates that the mobile station is located closer to the service base station than the adjacent base station. 6. A device for performing a handoff in a mobile communication system, comprising: a mobile station for determining a search window index corresponding to a first received signal out of a plurality of signals received from an adjacent base station, the received signals being searched within a range of a given search window and having a higher power than a predetermined level, and generating location information and direction information of the mobile station according to the determined search window index to make a handoff request message; and a base station for receiving the handoff request message to analyze the location information and direction information, and performing a handoff according to the analyzed location information and direction information; wherein the base station determines a location and a traveling direction of the mobile station according to the analyzed location information, and assigns a priority according to the location and the traveling direction of the mobile station. 7. The device as claimed in claim 6, wherein the base station assigns a highest priority when it is determined that the mobile station is located closer to the adjacent base station than the service base station and is moving to the adjacent base station from the service base station. 8. A method for performing a handoff in a mobile communication system, comprising the steps of: determining a search window index corresponding to a first received signal out of a plurality of signals received from an adjacent base station, the received signals being measured within a range of a given search window and having a higher power than a predetermined level; generating location information of the mobile station according to the determined search window index; generating direction information of the mobile station according to the determined search window index and a previously determined search window index; and making a handoff request message including the generated location information and direction information, and providing the handoff request message to a base station; wherein the location information is generated according to a location of the determined search window index relative to a center index corresponding to a center of the search window. 9. The method as claimed in claim 8, wherein the search window is centered on the search window index, which is covered with a mask as much as a PN phase offset of the adjacent base station at a reference time synchronized with a service base station. 10. The method as claimed in claim 8, wherein the direction information is generated according to a difference between a previously determined search window index and the presently determined search window index. 11. The method as claimed in claim 10, wherein when the difference between the previously determined search window index and the presently determined search window index is greater than a moving margin, the direction information indicates that the mobile station is moving to the adjacent base station from the service base station. 12. The method as claimed in claim 8, wherein when the determined search window index precedes the center index, the location information indicates that the mobile station is located closer to the adjacent base station than the service base station, and when the determined search window index is greater than the center index, the location information indicates that the mobile station is located closer to the service base station than the adjacent base station. 13. A method for performing a handoff in a mobile communication system, comprising the steps of: receiving a handoff request message from a mobile station and determining whether an adjacent base station has sufficient spare channels; analyzing, when the adjacent base station has insufficient spare channels, location information and direction information included in the handoff request message and performing a handoff according to the analyzed location information and direction information; determining a location of the mobile station based on the analyzed location information; determining a traveling direction of the mobile station based on the analyzed direction information; and assigning a priority according to the determined location and traveling direction of the mobile station and performing a handoff according to the priority. 14. The method as claimed in claim 13, wherein a highest priority is assigned when it is determined that the mobile station is located closer to the adjacent base station than the service base station and is moving to the adjacent base station from the service base station. 15. A method for performing a handoff in a mobile communication system, comprising the steps of: determining a search window index corresponding to a first received signal out of a plurality of signals received from an adjacent base station, the received signals being searched within a range of a given search window and having a higher power than a predetermined level, and generating location information and direction information of the mobile station according to the determined search window index to make a handoff request message; and receiving the handoff request message to analyze location information and direction information, and performing a handoff according to the analyzed location information and direction information; wherein the location information is generated according to a location of the determined search window index relative to a center index corresponding to a center of the search window. 16. The method as claimed in claim 15, further comprising the step of, upon receipt of a handoff cancel message, analyzing the location information and the direction information, and determining cancellation of a handoff based on the analyzed location information and direction information. 17. The method as claimed in claim 15, wherein the search window is centered on the search window index, which is covered with a mask as much as a PN phase offset of the adjacent base station at a reference time synchronized with a service base station. 18. The method as claimed in claim 15, wherein the direction information is generated according to a difference between a previously determined search window index and the presently determined search window index. 19. The method as claimed in claim 18, wherein when the difference between the previously determined search window index and the presently determined search window index is greater than a moving margin, the direction information indicates that the mobile station is moving to the adjacent base station from the service base station. 20. The method as claimed in claim 15, wherein when the determined search window index precedes the center index, the location information indicates that the mobile station is located closer to the adjacent base station than the service base station, and wherein when the determined search window index is greater than the center index, the location information indicates that the mobile station is located closer to the service base station rather than the adjacent base station. 21. The method as claimed in claim 15, wherein the handoff performing step comprises the steps of: determining a location of the mobile station based on the analyzed location information; determining a traveling direction of the mobile station based on the analyzed direction information; and assigning a priority according to the determined location and traveling direction of the mobile station and performing a handoff according to