KR20060041773A - Operation Method of Terminal Unique Number in Mobile Communication System - Google Patents

Abstract

The present invention relates to an effective operating method of the ESN for the normal operation of the terminal and the system in a mobile communication system. The present invention allocates an extended code of a predetermined bit to a field added to the front of the manufacturer code portion of the ESN or UIM_ID and stores it in the terminal. When the base station requests to send the extension code through a status request message, The terminal reports the extended code through a response message or through a terminal information message. Therefore, for example, even if the 32-bit ESN is exhausted, if the length of the extended code is determined to be 4 bits, additional space corresponding to 16 times the 32-bit ESN is secured, which effectively solves the ESN exhaustion problem and the PLCM collision problem. Can be.

ESN, Terminal ID, PLCM, UIM_ID

Description

How to Operate Terminal Unique Number in Mobile Communication System {METHOD FOR MANAGING TERMINAL SPECIFIC NUMBER IN MOBILE COMMUNICATION SYSTEM}

1 is a diagram showing the structure of a conventional 32-bit ESN.

Fig. 2 shows the structure of a conventional 42 bit PLCM used in cdma2000.

3 illustrates the structure of an extended ESN in accordance with the present invention.

4A and 4B are diagrams showing an example of a mapping table in the case where 4-bit extended ESN is used in the present invention.

FIG. 5 is a diagram illustrating a structure of a PLCM generated by mapping values of a mapping table in the present invention. FIG.

6 is a diagram illustrating an example of a status request message (STRQM) of a base station.

7 is a diagram illustrating an example of a status response message (STRPM) of a terminal of a terminal.

8 is a diagram illustrating an example of an extended status response message (ESTRPM) of a terminal.

9 shows part of a RECORD_TYPE in a status request message and a status response message STRPM.

FIG. 10 is a diagram illustrating a structure of an 8-bit station class mark capable of reporting characteristics of a terminal to a base station. FIG.

11 illustrates types of messages transmitted through a downlink common signaling channel (F-CSCH).

12 is a diagram illustrating types of other messages transmitted through a downlink dedicated signaling channel (F-CSCH).

The present invention relates to a mobile communication system, and more particularly, to an effective operating method of a terminal unique number for the normal operation of the terminal and the system.

Currently, cdma2000 systems and terminals use a terminal serial number (ESN) to identify each terminal.

Figure 1 shows the structure of a conventional 32-bit ESN.

As shown in FIG. 1, the terminal serial number (ESN) includes a manufacturer code portion of the upper 8 bits and a serial number portion of the remaining 24 bits. The 8-bit is a part assigned uniquely to each terminal manufacturer by a Telecommunication Industry Association (TIA) authorized by the Federal Communications Commission (FCC), and the serial number part is uniquely assigned to each terminal by each terminal manufacturer. Part.

 In particular, the terminal serial number (ESN) is a unique identifier of each terminal, and is used for generating user authentication and public long code mask (PLCM) in mobile communication systems and terminals. The common long code mask (PLCM) is generated using an ESN in a cdma2000 system, and is composed of 42 bits, as shown in FIG. The upper 10 bits of the PLCM are set to a fixed value to avoid collision with other long code masks, and the Per32-ESN is set to the lower 32 bits.

In addition, the TIA authorized by the FCC allocates a 32-bit unique number called a user identification module ID (UIM_ID) to a Removable User Identity Module (R-UIM), wherein the UIM_ID is an area for allocating an ESN. It is allocated within the range that does not overlap with the ESN. If the R-UIM is attached to the mobile communication terminal, a bit (1 bit) called a UIM_ID usage indicator is set to "1", and the UIM_ID is used instead of all ESNs. Therefore, in the case of the terminal to which the R-UIM is attached, permutated-UIM_ID is entered in the lower 32 bits of the PLCM shown in FIG.

However, due to the development of the mobile communication industry, the demand for mobile communication terminals increases and the number of companies that produce them increases the terminal unique numbers (ESN and UIM_ID). The biggest problem that occurs when the ESN and UIM_ID is exhausted is that the collision of the PLCM generated by using the ESN or UIM_ID inevitably occurs, and if the collision occurs in the PLCM cross talk problem May occur and the capacity may be significantly reduced.

Accordingly, an object of the present invention is to propose a method for operating a system and a terminal normally while using the terminal unique number as it is when the terminal unique number is exhausted.

Another object of the present invention is to provide a method for operating a terminal unique number that can effectively prevent a collision of PLCM caused by the exhaustion of ESN.

In order to achieve the above object, the present invention adds a predetermined field to the front of the manufacturer code portion of the terminal identification number, assigns an extended code value of a predetermined bit to the field, When the unique number is exhausted, the terminal uses the extended code value to generate a common long code mask (PLCM).

Preferably, the terminal unique number is an electronic serial number (ESN) or a user identification module ID (UIM_ID), and the extended code value is one fixed one of 1 to 5 bits. Has a value.

Preferably, the terminal stores the 5-bit portions (P36 ~ P32) of the PLCM corresponding to the extended code value in the form of a table, the 5-bit portion is set to a value that does not conflict with all the long code masks currently used .

In order to achieve the above object, the present invention includes the steps of storing the extended code value in the terminal; And when the status request message is received from the base station, reporting the extended code value to the base station through a response message.

Preferably, the extended code value is assigned to a predetermined field added to the front of the manufacturer code portion of the terminal identification number.

Preferably, the terminal unique number is an electronic serial number (ESN) or a user identification module ID (UIM_ID).                         

Preferably, the extended code value has a fixed value of one of 1 bit to 5 bits.

Preferably, the extended code value is transmitted through the RECORD-TYPE field of the status request message of the base station and the status response message of the terminal, respectively.

Preferably, the extended code value is transmitted through Type-specific fields of the status response message of the terminal.

Preferably, whether or not the terminal implements the extended code is stored in a permanent memory of the terminal and is transmitted to the base station through a registration message, an outgoing message, a page response message, and terminal information (Terminal Information). It is indicated by setting the value of SCM _P ) to the value that was previously reserved.

Preferably, the terminal may know to the base station that the terminal uses the extended code value by using a predetermined message field. In this case, the predetermined message field is a station class mark, and the message field is transmitted to a base station through a registration message, an outgoing message, a page response message, and a terminal information message.

Preferably, the terminal information message is a status message, a status response message and an extended status response message.

In addition, the base station may set the terminal channel or, if the terminal performs a handoff, it may inform the terminal that the base station or its mobile station is the base station using the extended code.                         

Preferably, whether or not the base station implements the extended unique number is an Extended Channel Assignment (ECAM) used when the base station allocates a channel and a General Handoff Direction Message (GHDM) that informs the information of the moved base station during handoff. ), You can find out by setting Message ID or Message Type of Universal Handoff Direction Message (UHDM) to reserved value which is not used.

The present invention is implemented in a cdma2000 system and a terminal. However, the present invention can also be applied to a wireless communication system operating according to other standards. Hereinafter, preferred embodiments of the present invention will be described in detail.

The present invention provides a system and a terminal while maintaining the ESN and UIM_ID scheme when the terminal unique number, that is, the terminal serial number (ESN) and the terminal identification number (UIM_ID), which uniquely distinguish each terminal in the mobile communication system is exhausted. We propose a way to operate normally.

To this end, the present invention first includes a predetermined field in the existing ESN or UIM_ID, as shown in FIG. 3, which field is implemented with one bit of 1 to 5 bits and is assigned a fixed code value. In the present invention, an example in which 4 bits are added will be described, and the code to be allocated will be referred to as an extended code. Preferably, the field is added to the front of the manufacturer code portion.

In addition, the present invention proposes a method of using the extended code value to generate the PLCM. The PLCM is used to encrypt the channel in the forward channel and to determine the location of the power control bits. In addition, the PLCM serves to distinguish each terminal in the reverse channel and serves to reduce interference with other subscriber stations.

To this end, the present invention does not conflict with all long code masks currently used in the 5-bit portion (P36 to P32) of the 42-bit (P0 to P41) PLCM according to the extended 4-bit code value. Use a table that maps to That is, the present invention finds and uses a pattern not currently used among the patterns of 5-bit portions P36 to P32 for generating PLCM according to the extended code value.

4A and 4B are examples of mapping tables when 4-bit extended codes are used, and FIG. 5 is a structure of a PLCM generated by each mapping value. As described above, the present invention determines 16-bit (2 ⁴ = 16) additional ESNs and PLCMs by determining an extended code value in case of depletion of 32-bit ESNs and then using them when generating PLCMs. .

Finally, the present invention proposes a signaling method that can recognize and use an extended code value. To this end, each terminal should store the extended code value, and has a function of reporting the extended code value according to the request of the base station. The extended code value is reported through a status response message (STRPM) or an extended status response message (STRPM) of the terminal to a status request message (STRQM) of the base station.

6 to 8 are STRQM, STRPM that the terminal can report the extended code value at the request of the base station. And the message structure of ESTRPM is shown. In particular, Figures 6 to 8 show the fields sent in each message (STRQM, STRPM. And ESTRPM), where RECORD_TYPE determines what information the base station will request in each message, or what the terminal will send in response It is used to determine whether or not. Accordingly, the extended code value is transmitted through the RECORD-TYPE field of the status request message of the base station and the status response message of the terminal, respectively. In addition, the extended code value may be transmitted through "Type-specific fields" of the status response message of the terminal.

9 is a diagram illustrating a part of a table that defines a RECORD_TYPE.

In FIG. 9, Flash indicates a flash with an information message or an extended flash with an information message, and an information record indicates a status request message STRQM, a status response message or an extended status response message. (ESTRPM).

Therefore, the present invention includes the extended code value in the RECORD_TYPE, when the base station requests the transmission of the extended code value through the STRQM, the terminal reports the extended code value to the base station through the STRPM or ESTRPM to report the extended code The value can be used to recognize the PLCM.

10 is a structure of an 8-bit station class mark that can be reported to a base station as a characteristic of a terminal.

Referring to FIG. 10, a station class mark is a value stored in a permanent memory of a terminal in the form of SCM _P , and is a registration message, an origination message, and a page response message without a request of a base station. Message field sent to the base station through the Response Message In addition, the Station Class Mark is a message field transmitted to a base station through a terminal information message such as a status message, a status response message, and an extended status response message.

Therefore, the present invention proposes that the terminal informs the base station that the terminal implements the extended code by using the reserved value of the station class mark. To this end, the present invention has previously reserved the value of the Station Class Mark (SCM _P ) delivered to the base station through the response message, the outgoing message, the page response message and the terminal information whether or not the terminal implements the extended code. You can tell it by setting it to a value.

For example, as shown in FIG. 10, the fourth bit representing the IS-54 Power Class of the Station Class Mark is set to "1", the third bit representing the 25 MHz bandwidth is set to "0", or Power Class for Band Class 0 By setting the 1st and 0th bits indicating the Analog Operation to "11", the terminal may inform the base station that the terminal implements the extended code.

In addition, when the base station generates the PLCM according to the extended code value, the base station may inform that the base station is a base station that has implemented the extended code when the channel is allocated to the terminal or when the terminal handovers. For this purpose, the base station must store the extended code value.

11 is a diagram illustrating types of messages transmitted through a downlink common signaling channel (F-CSCH).

In FIG. 11, each message is distinguished by MSG_ID. The MSG_ID of the Extended Channel Assignment Message (ECAM), which is a message used when allocating a channel, is “010101”. Therefore, according to another embodiment of the present invention, it is proposed that the base station notifies the terminal that the base station implements the extended code. That is, when the base station implementing the extended code gives the ECAM to the terminal implementing the extended code, the MSG_ID is not set to "010101", but is set to a reserved MSG_ID which is not used previously, so that the corresponding terminal of the base station is configured. Allows you to know whether to implement extended code.

Therefore, if the MSG_ID of the ECAM is not reserved as "010101", but more specifically, the specific value determined by this proposal, the terminal reads M36 to M32 from the table as suggested by this proposal when generating PLCM. Set it to the entered value.

12 is a view illustrating types of other messages transmitted through a downlink dedicated signaling channel (F-CSCH).

In FIG. 12, a general handoff direction message (GHDM) or a universal handoff direction message (UHDM) is used to inform a terminal of a target base station by a current source base station when performing a handoff. This message is used. In the case of the GHDM, the MSG_TYPE (or MSG_ID) is "00011111", and in the case of the UHDM, the MSG_TYPE is "00100010".

In this proposal, when the base station implementing the extended code gives the GHDM or the UHDM to the terminal implementing the extended code, the MSG_TYPE is not set to "00011111" or "00100010", but is set by the reserved MSG_TYPE which is not used previously. Extended of the target base station when the terminal is handed off It is suggested that we know whether the code is implemented. Therefore, when the MSG_TYPE of the GHDM or the UHDM is a specific value determined by the present proposal, which is not reserved, but not "00011111" or "00100010", the present proposal is performed when the target base station generates the PLCM after performing the handoff. As suggested in, set M36 ~ M32 to the value read from the table.

In addition, although the present invention has been described by taking an ESN as an example for convenience of explanation, it is understood that the same applies to the case where UIN_ID is used instead of the ESN.

As described above, the present invention adds a predetermined field in addition to the manufacturer code portion of 8 bits in the ESN or UIM_ID, and additionally allocates an extended code having a fixed value of 1 to 5 bits to the field. Therefore, when the extended code is used to generate the PLCM, an additional space corresponding to 16 times the 32-bit ESN space is secured, which may effectively solve the ESN depletion problem.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (22)

In a mobile communication system for generating a common long code mask (PLCM) using a terminal unique number, And adding a predetermined field in addition to the manufacturer code portion of the terminal unique number, and assigning an extended code value of a predetermined bit to the field. The terminal unique number of claim 1 Method of operating a terminal unique number, characterized in that the terminal serial number (Electronic Serial Number (ESN) or user identification module ID (UIM_ID)). The method of claim 1, wherein the extended code value A method for operating a terminal unique number, characterized in that it has a fixed value of one to five bits. The method of claim 1, wherein the field is Operating method of the terminal unique number, characterized in that added to the front of the manufacturer code portion. The terminal of claim 4, wherein the terminal And a 5-bit portion (P36 to P32) of the common long code mask in the form of a table corresponding to the extended code value. The method of claim 5, wherein the 5-bit portion Operating method of the terminal unique number, characterized in that it is set to a value that does not conflict with all long code masks currently used. Storing the extended code value in the terminal; And when the status request message is received from the base station, reporting the extended code value to the base station through a response message. 8. The method of claim 7, wherein the extended code value is Operating method of the terminal unique number, characterized in that assigned to a predetermined field added to the front of the manufacturer code portion of the terminal unique number. The method of claim 8, wherein the extended code value is A method for operating a terminal unique number, characterized in that it has a fixed value of one to five bits.  According to claim 8, wherein the terminal unique number Method of operating a terminal unique number, characterized in that the terminal serial number (Electronic Serial Number: ESN) or terminal identification number (User Identification Module ID: UIM_ID). The method of claim 7, wherein the response message is Operating method of the terminal unique number, characterized in that the status response message or extended status response message. 8. The method of claim 7, wherein the extended code value is A method for operating a terminal unique number characterized in that it is transmitted through the RECORD-TYPE field of the status request message of the base station and the status response message of the terminal. 8. The method of claim 7, wherein the extended code value is A method for operating a terminal unique number characterized in that it is transmitted through Type-specific fields of the status response message of the terminal. 8. The method of claim 7, further comprising the step of notifying the base station that the terminal uses the extended code value to the base station by using a predetermined message field. 15. The method of claim 14 wherein the predetermined message field is Method of operating a terminal unique number characterized in that the Station Class Mark. 15. The method of claim 14 wherein the message field is Method of operating a terminal unique number, characterized in that transmitted to the base station through the registration message, outgoing message, page response message and the terminal information message. 15. The method of claim 14, wherein the terminal information message Method of operating a terminal unique number, characterized in that the status message, status response message and extended status response message. In a mobile communication system for generating a common long code mask (PLCM) using a terminal unique number, The base station stores the extended code value and informs the terminal that the terminal or the handed off base station is the base station using the extended code when the channel setting of the terminal or the terminal performs handoff. Operating method. 19. The method of claim 18, wherein the base station The MSG_ID of the ECAM used when allocating a channel is set to a reserved MSG_ID which has not been previously used, thereby informing whether the extended code is implemented or not. The terminal of claim 18, wherein the terminal is A terminal using an extended code, wherein when the MSG_ID of the ECAM is not previously used, a 5-bit portion (P36 to P32) of the common long code mask is set to a stored table value when generating the PLCM. How the unique number works. 19. The method of claim 18, wherein the base station When the terminal handoffs, the MSG_ID of the GHDM or UHDM message used to inform the terminal of the handoff base station is set to a new unused reserved MSG_ID to inform the target base station whether to implement the extended code. A method for operating a terminal unique number characterized in that. The terminal of claim 21, wherein the terminal is A terminal using an extended code, in which the MSG_TYPE of the GHDM or UHDM message is a value not previously used, the 5-bit portion (P36 to P32) of the common long code mask is set to a stored table value when generating the PLCM. A method of operating a terminal unique number.

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