System and method for generating message reference number for a mobile communication station

A system and method is disclosed is capable of receiving messages from a mobile communication system. The system generates a reference number for a received message comprising a terminal, a reference number table, and comparator. The terminal communicates a received message having an allocated reference number. A reference number table stores messages according to reference number. A comparison is performed at the terminal for comparing the allocated reference number to a reference number of a previously stored message. A new reference number is generated if the allocated reference number is the same as the reference number of the previously stored message. The system also provides means for storing the allocated reference number and the new reference number in the reference number table for the received message.

CROSS-REFERENCE TO RELATED APPLICATIONS

Pursuant to 35 U.S.C. § 119(a), this application claims the benefit of earlier filing date and right of priority to Korean Application No. 10-2003-80861, filed on Nov. 15, 2003, the contents of which are hereby incorporated by reference herein in their entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a message service of a mobile communication terminal, and particularly, to a system and method for generating a message reference number of a mobile communication terminal.

2. Description of the Related Art

A mobile terminal provides not only voice, but more recently data communication and multimedia services. One type of data communication service, a short message service, transmits a text message through a short message center (SMSC) to a user. An enhanced message service (EMS) may transmit the text message with attachments. The attachments may be pictures, animations, photos, melodies, and the like. These attachments may be provided by an EMS terminal. A single message from an EMS terminal may contain only a limited number of bytes of data. To increase the capacity of an EMS terminal, multiple data bytes are concatenated as one message utilizing a concatenation function.

The data contained in a concatenated message has a value associated with a reference number. For example, if the reference number is 8 bits, then the data has a value between 0 to 255. In another example, if the reference number is 16 bits, then the data has a value between 0 to 65335. Upon transmission of a mobile originated (MO) message, a mobile originated mobile station (MOMS) assigns reference numbers to messages for concatenation. A mobile terminated mobile station (MTMS) receiving the messages concatenates the messages having the reference numbers into one message.

A reference number contained in a message of the conventional mobile terminal has a limited number of bytes. In one example, a conventional mobile terminal is limited to communicating messages of 8 to 16 bytes. When a mobile terminal user exchanges a message with multiple users, the reference numbers are repeatedly used. The MTMS may receive a message having the same reference number as that of a previously received and stored message. Accordingly, the received message and the previously stored message having the same reference number, even if stored separately, are not concatenated to avoid a collision of reference numbers. The collision would result in a data error.

There is a need for improvements in communicating messages within a mobile communication system that addresses the above problems and provides additional advantages.

SUMMARY OF THE INVENTION

The invention is directed to provide a system and method for generating a reference number, such as an allocated reference number, for a message of a mobile terminal to prevent data collision errors due to overlapping reference numbers. The reference number is generated when a newly received message has a reference number that is the same as that of a previously stored message.

In one embodiment, a system for generating a message reference number implementing a message service function comprising a terminal for communicating a received message having an allocated reference number, a reference number table, and a comparator electrically coupled to the terminal for comparing the allocated reference number to a reference number of a previously stored message. The embodiment further comprises a means for generating a new reference number if the allocated reference number is the same as a reference number of a previously stored message. The embodiment further comprises a means for storing the allocated reference number and the new reference number in the reference number table for the received message.

In yet another embodiment, the system further comprises a means for extracting the allocated reference number. In yet another embodiment, the system further comprises a means for extracting the allocated reference number if the received message is a concatenated message.

In yet another embodiment, the reference number table has a means for registering the allocated reference number for comparison with a registered number for a previously stored message.

The reference number table further comprises a data field structure having a message identifier field for identifying the order that the received message was received. The reference number table further comprises a data field structure having a reference number field for storing the allocated reference number. The reference number table further comprises a data field structure having a new reference number field for storing the new reference number if the allocated reference number is the same as the reference number of a previously stored message.

In yet another embodiment, the allocated reference number is allocated by a mobile originated mobile station. In another embodiment, the new reference number of the received message is allocated by a mobile terminated mobile station.

In yet another embodiment, a method is disclosed for generating a reference number for a message of a mobile communication terminal comprising extracting a reference number allocated to a received message, determining whether another message having a reference number that is the same as the extracted reference number exists; and, generating a new reference number for the received message if another message having the same reference number exists, and registering the new reference number in a reference number table.

The embodiment further comprises determining if the received message is a concatenated message, then extracting the reference number.

The embodiment further comprises notifying a user of the message reception.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

These and other embodiments will also become readily apparent to those skilled in the art from the following detailed description of the embodiments having reference to the attached figures, the invention not being limited to any particular embodiments disclosed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention relates to efficiently transmitting messages by increasing data capacity and preventing data collisions between terminals in a mobile communication system. The method and system is capable of detecting and discerning concatenated messages. Although the invention is illustrated with respect to a mobile terminal using an enhanced message service, it is contemplated that the invention may be utilized anytime it is desired for efficiently transmitting or receiving signals from one location to another location.

The present invention provides a solution for conventional mobile communication terminals when a received message (reception message) has a reference number that is the same as a previously received message. The present invention prevents the loss of data due to a received message being copied over a stored message with the same reference number. The present invention generates a new reference number for a received message if the received message has the same reference number as a stored message at a terminal. The reference numbers of messages are stored according to reference number in a reference number table. If the received message has the same reference number as the stored message, the reference number of the received message and the new reference number are stored in the reference number table. The reference numbers are registered by the system of the present invention.

Referring toFIG. 1, an enhanced message service (EMS) utilizes a field structure comprising a user data length (UDL), a user data header length (UDHL), an information element identifier (IEI), an information element identifier data length (IEIDL), and information element data (IED). The UDHL field defines the entire length of the user data field. The UDHL field expresses the number of octets in a User Data Header field as an integer and the UDHL field. However, the fill bits are not included in the number of octets. The information element (IEIDL) field expresses the number of octets related to an information element data (IED) field as an integer. The IEIDL field itself is not included in a count value.

An enhanced message service (EMS) sends a message. The message is divided into two messages. A concatenated short message having a 8-bit reference number and a concatenated short message having a 16-bit reference number. As for the concatenated short message having the 8-bit reference number, the values for the fields are IEI=0, IEIDL=3, and the IED octet includes, in this example, octets1,2and3. Octet1comprises a concatenated short message 8-bit reference number. Octet2comprises the maximum number of short messages in the concatenated short message. Octet3comprises the sequence number of the current short message.

As for the concatenated short message having the 16-bit reference number, the values for the fields are the IEI=08, the IEIDL=4, and the IED octet includes, in this example, octets1,2,3, and4. Octets1and2are concatenated short messages for 16-bit reference numbers. Octet3is the maximum number of short messages in the concatenated short message. Octet4is the sequence number of the current short message.

Referring toFIG. 2, an embodiment of the IED octet (using 8-bit reference number) is shown. A concatenated message is received. The concatenated message comprises multiple messages, for example, designated M1, M2, and M3. Referring to M1, octet1indicates a reference number of ‘123’, octet2indicates the maximum number of short messages is ‘3’, and octet3indicates a sequence number of the current short message is ‘1’. Referring to M2, octet1indicates a reference number ‘123’, octet2indicates the maximum number of short messages is ‘3’, and octet3indicates a sequence number of the current short message is ‘2’. Referring to M3, octet1=‘123’, octet2=‘3’, and octet3=‘3’.

Referring toFIG. 3, a received message is received (S11). A terminal determines whether the received message is a concatenated message (S12). If the received message is not a concatenated message, but a multimedia message service (MMS) or a long message service (LMS), the terminal notifies a user that the message is received (S13). For notification purpose, the message is outputted on a display unit, in this example, according to a user input command. The user input command may be through the key buttons of the terminal.

If the received message is a concatenated message, the terminal extracts a reference number from the received message (S14). The terminal determines whether another message, such as a stored or temporarily stored message, has a same reference number (S15). In this example, the reference number of the received message is compared to a previously stored message, such as a concatenated message located in a reference number table. The reference number table is located, in this example, at the terminal. Namely, the reference number of the concatenated message received by the terminal is stored in the reference number table.

If a received message has the same reference number as the (extracted) reference number already stored in the terminal, the terminal generates a new reference number (S16). The new reference number, in one example, replaces the reference number of the received message. In yet another embodiment, the reference number (extracted from the received message) and the new reference number are stored together in the reference number table (S17).

If the extracted reference number does not exist at the terminal, the terminal stores only the extracted reference number in the reference number table (S18).

Referring toFIG. 4, the reference number table, for example, is comprised of fields comprising a message identifier, a reference number, and a new reference number. The message identifier allocates or generates an identifier according to the order that the concatenated messages arrive at the terminal. The reference number is stored for each concatenated message from the mobile originated mobile station (MOMS). The new reference number is allocated or generated for each concatenated message by the mobile terminated mobile station (MTMS).

The reference number associated with message identifier #3 is ‘123’. The terminal searches the reference number table. The terminal determines there is a concatenated message (another message) having a reference number ‘123’ corresponding to message identifier #2. The terminal generates or allocates a new reference number ‘122’ for the concatenated message corresponding to the message identifier #3. The reference number ‘123’ and the new reference number ‘122’ are both stored for message identifier #3 in the reference number table.

In other words, if a received message has an identical reference number as a reference number as that of a concatenated message already existing, the terminal generates a new reference number and stores the two reference numbers for identifying the received message.

Referring toFIG. 5, a method of the present invention is disclosed. A user inputs a command checking a message stored in a terminal (S21). The terminal displays a message list on a display unit (S22). The user selects a message from the message list and the terminal determines whether the corresponding message is a concatenated message (S23).

If the message is a concatenated message, all messages within the concatenated message having the same reference number as that of the corresponding message are arranged in the order of their sequence numbers (S24). The contents of the concatenated message are provided to the display unit (S25). However, if the message is not a concatenated message, the corresponding message is coded and displayed on the display unit (S25).

If the reception terminal provides a newly allocated reference number to the concatenated message, the concatenated messages within the message are arranged according to an assigned sequence number. The assigned sequence number is based on the new reference number.

The following are examples including a mobile communication device using the system and the method of the present invention.

Referring toFIG. 6, the mobile communication device600comprises a processing unit610such as a microprocessor or digital signal processor, an RF module635, a power management module606, an antenna640, a battery655, a display615, a keypad620, a storage unit630such as flash memory, ROM or SRAM, a speaker645and a microphone650.

A user enters instructional information, for example, by pushing the buttons of a keypad620or by voice activation using the microphone650. The processing unit610receives and processes the instructional information to perform the appropriate function. Operational data may be retrieved from the storage unit630to perform the function. Furthermore, the processing unit610may display the instructional and operational information on the display615for the user's reference and convenience.

The processing unit610issues instructional information to the RF module635, to initiate communication, for example, transmit radio signals comprising voice communication data. The RF module635comprises a receiver and a transmitter to receive and transmit radio signals. The antenna640facilitates the transmission and reception of radio signals. Upon receive radio signals, the RF module635may forward and convert the signals to baseband frequency for processing by the processing unit610. The processed signals would be transformed into audible or readable information outputted via the speaker645.

The processing unit610performs the methods and provides the systems as illustrated inFIGS. 2–5. As an example, the processing unit610adapted to generating a reference number for a message of a mobile communication terminal, comprising extracting a reference number associated with a received message, determining whether another message having a reference number that is the same as the extracted reference number exists, generating a new reference number for the received message if the another message having the same reference number exists, and registering the new reference number in a reference number table. Other features, as described above inFIGS. 2–5, may be incorporated as well into the processing unit610.

The processing unit610stores the messages received from and messages transmitted to other users in the storage unit630, receive a conditional request for message input by the user, process the conditional request to read data corresponding to the conditional request from the storage unit. The processing unit610outputs the message data to the display unit615. The storage unit630is adapted to store message data of the messages both received and transmitted.

It will be apparent to one skilled in the art that the preferred embodiments of the present invention can be readily implemented using, for example, the processing unit610(ofFIG. 6) or other data or digital processing device, either alone or in combination with external support logic.

Although the present invention is described in the context of a consumer product such as a MP3 player, the present invention may also be used in any wired or wireless communication systems using mobile devices, such as PDAs and laptop computers equipped with wired and wireless wireless communication capabilities. Moreover, the use of certain terms to describe the present invention should not limit the scope of the present invention to certain type of wireless communication system, such as UMTS. The present invention is also applicable to other wireless communication systems using different air interfaces and/or physical layers, for example, TDMA, CDMA, FDMA, WCDMA, etc.

The preferred embodiments may be implemented as a method, system or article of manufacture using standard programming and/or engineering techniques to produce software, firmware, hardware, or any combination thereof. The term “article of manufacture” as used herein refers to code or logic implemented in hardware logic (e.g., an integrated circuit chip, Field Programmable Gate Array (FPGA), Application Specific Integrated Circuit (ASIC), etc.) or a computer readable medium (e.g., magnetic storage medium (e.g., hard disk drives, floppy disks, tape, etc.), optical storage (CD-ROMs, optical disks, etc.), volatile and non-volatile memory devices (e.g., EEPROMs, ROMs, PROMs, RAMs, DRAMs, SRAMs, firmware, programmable logic, etc.).

Code in the computer readable medium is accessed and executed by a processor. The code in which preferred embodiments are implemented may further be accessible through a transmission media or from a file server over a network. In such cases, the article of manufacture in which the code is implemented may comprise a transmission media, such as a network transmission line, wireless transmission media, signals propagating through space, radio waves, infrared signals, etc. Of course, those skilled in the art will recognize that many modifications may be made to this configuration without departing from the scope of the present invention, and that the article of manufacture may comprise any information bearing medium known in the art.

The logic implementation shown in the figures described specific operations as occurring in a particular order. In alternative implementations, certain of the logic operations may be performed in a different order, modified or removed and still implement preferred embodiments of the present invention. Moreover, steps may be added to the above described logic and still conform to implementations of the invention.

Further, with respect to the claims, it should be understood that any of the claims described below may be combined for the purposes of the present invention.