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Method-of-handling-short-message-service-acknowledgement-messages-between-cooperating-mobile-switching-centers-in-a-radio-telecommunications-network

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Method of handling short message service acknowledgement messages between cooperating mobile switching centers in a radio telecommunications network

Details

Inventors: Corriveau, Michel; Brochu, Jean-Pierre; Raynauld, Jacques; Joong, Donald;
Assignee: Telefonaktiebolaget LM Ericsson (publ) (Stockholm, SE)
Primary Examiner: Trost; William G.
Assistant Examiner: Trinh; Sonny
Attorney, Agent or Firm: Smith & Danamraj, PC

A method of handling SMS messages in a radio telecommunications network when an originating mobile station-based Short Message Entity (MS-SME) sends a SMS origination message while operating in a first Mobile Switching Center (MSC) and then moves into a second MSC before the MS-SME receives a SMS acknowledgement message. The method begins by including a R.sub.-- Transaction ID parameter in the SMS origination message sent over the Digital Traffic Channel (DTC) from the originating MS-SME to the first MSC. If the MS-SME moved back to an anchor MSC, a SMS.sub.-- Transaction ID (SMSTID) parameter is included in an ANSI-41 SMS Delivery Backward (SMDBACK) Invoke message sent from the first MSC to the anchor MSC. The SMSTID parameter utilizes information from the R.sub.-- Transaction ID parameter to enable the MS-SME to correlate a SMS acknowledgement message with the SME origination message. If the MS-SME moved to a new serving MSC, the SMSTID parameter is placed in a SMS Delivery Point-to-Point Acknowledgement (SMDPPACK) Invoke message, and sent from the anchor MSC to the new serving MSC. The information in the SMSTID parameter is used by the second MSC to send a SMS acknowledgement message to the originating MS-SME.

DETAILED DESCRIPTION In one aspect, the present invention is a method of handling Short Message Service (SMS) messages in a radio telecommunications network when an originating mobile station-based Short Message Entity (MS-SME) sends a SMS origination message while operating in a serving Mobile Switching Center (MSC) and then moves into an anchor MSC before the MS-SME receives a SMS acknowledgement message.
The method begins by including a radio air interface SMS message-correlating parameter in an intersystem SMS delivery message sent from the serving MSC to the anchor MSC.
When the anchor MSC receives an SMS acknowledgement message from a message center, the anchor MSC determines whether the MS-SME is in its service area.
This is followed by sending the SMS acknowledgement message directly from the anchor MSC to the originating MS-SME over an air interface radio link, and including the radio air interface SMS message-correlating parameter.
The SMS message-correlating parameter enables the MS-SME to correlate the SMS acknowledgement message with the SMS origination message.
In another aspect, the present invention is a method of handling SMS messages in a radio telecommunications network when an originating MS-SME sends a SMS origination message while operating in an initial serving MSC and then moves through a tandem MSC into an anchor MSC before the MS-SME receives a SMS acknowledgement message.
The method begins by including a radio air interface SMS message-correlating parameter in an intersystem SMS delivery message sent from the initial serving MSC to the tandem MSC.
The SMS message-correlating parameter is then included in an intersystem SMS delivery message sent from the tandem MSC to the anchor MSC.
The SMS acknowledgement message is then sent directly from the anchor MSC to the originating MS-SME over the air interface Digital Traffic Channel (DTC).
The originating MS-SME then utilizes the radio air interface SMS message-correlating parameter to correlate the SMS acknowledgement message with the SMS origination message

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