CN102970661A - Method and device for code conversion of short messages - Google Patents
Method and device for code conversion of short messages Download PDFInfo
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- CN102970661A CN102970661A CN2012104719541A CN201210471954A CN102970661A CN 102970661 A CN102970661 A CN 102970661A CN 2012104719541 A CN2012104719541 A CN 2012104719541A CN 201210471954 A CN201210471954 A CN 201210471954A CN 102970661 A CN102970661 A CN 102970661A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
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Abstract
The invention discloses a method and a device for the code conversion of short messages. The method comprises: a code conversion driving table is stored in a short message center, and the corresponding relation of the code values of characters in an American standard code for information interchange (ASCII) code table and the code values of the same characters in a global system for mobile communications (GSM) code table is recorded in the code conversion driving table; and after the short message center receives the short message, when a sender and a receiver adopt different short message encoding types, the code value of the received short message is found out from the code conversion driving table according to the short message encoding type which is adopted by the sender, so that the code value, which corresponds to the code value of the short message, of the short message encoding type which is adopted by the receiver is obtained. The code conversion driving table is added in the short message center, custom code table conversion can be realized through the code conversion driving table no matter which country regions the short message center is used, and a new code table conversion function does not need to be temporarily developed.
Description
Technical field
The present invention relates to the short message transmission technical field, relate in particular to a kind of method and device that short message is carried out code conversion.
Background technology
The code table conversion of content of short message is a core technology of short message service center.Short message service center supports multiple short message transport protocol, for example, and GSM0340 (global system for mobile communications 0304) agreement and SMPP (the short message breath is point-to-point) agreement.GSM0304 is used for the communication between the GSM terminal.The SMPP agreement is used for the communication between the outside Short Message Entity, and different agreements is used different short message code tables.
What GSM0340 used is GSM code table (seeing the GSM0338 agreement for details), is illustrated in figure 1 as the basic code table of GSM, is illustrated in figure 2 as GSM expansion code table; What the SMPP agreement was used is ASCII (ASCII) code table, is illustrated in figure 3 as the basic code table of ASCII.
When between terminal and outside Short Message Entity, receiving and dispatching short message, need short message service center between GSM code table and ASCII character table, to carry out the code value conversion, i.e. code table conversion.For example, the user sends out a short message to certain SP (outside Short Message Entity) from terminal, and short message service center is after receiving the short message that terminal is submitted to, and the character of the needs conversion that need to will wherein comprise is converted to ASCII character from the GSM code, and then delivers to SP.In practice; short message service center is after carrying out the code table conversion to short message; content of short message and the problem that former content of short message not exclusively conforms to after often can occurring changing cause transmitting wrong content of short message to receiving terminal, have reduced the service quality to the user.
Summary of the invention
The technical problem to be solved in the present invention provides a kind ofly carries out method and the device of code conversion to short message, is reduced in the probability that content of short message makes a mistake after the type of coding conversion.
For solving the problems of the technologies described above, of the present inventionly a kind of short message is carried out the method for code conversion, comprising:
Short message service center preserves the code conversion table-drive, records the corresponding relation of the code value of identical characters in the code value of character in the ASCII ASCII character table and the global system for mobile communications GSM code table in the described code conversion table-drive;
After described short message service center receives short message, when transmit leg adopts different short message type of codings from the recipient, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from described code conversion table-drive, obtain the code value of the short message type of coding that the recipient corresponding to code value of short message adopt.
Further, also record the corresponding relation of the code value that is included in the code value that is not included in the character in the GSM code table in the ASCII character table and the character in the GSM code table in described code conversion table-drive, described to be included in the code value that is not included in the character in the GSM code table in the ASCII character table corresponding with identical code value in the GSM code table.
Further, in described code conversion table-drive, be provided with the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table.
Further, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from described code conversion table-drive, obtains the code value of the short message type of coding that the recipient corresponding to code value of short message adopt, and comprising:
When described short message service center adopts the type of coding recipient of ASCII character to adopt the type of coding of GSM code at transmit leg, from the code value of the ASCII character table of described code conversion table-drive, search the code value of the short message that receives, obtain the code value of GSM code table corresponding with the code value of the ASCII character table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
Further, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from described code conversion table-drive, obtains the code value of the short message type of coding that the recipient corresponding to code value of short message adopt, and comprising:
When described short message service center adopts the type of coding recipient of GSM code to adopt the type of coding of ASCII character at transmit leg, from the code value of the GSM code table of described code conversion table-drive, search the code value of the short message that receives, and according to the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table, obtain the code value of default ASCII character table corresponding with the code value of the GSM code table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
Further, described ASCII character table comprises the basic code table of ASCII and one or more ASCII expansion code table; Described GSM code table comprises the basic code table of GSM and GSM expansion code table.
Further, a kind of short message is carried out the device of code conversion, comprising: code conversion table-drive module, short message receive module and short message code conversion module, wherein:
Described code conversion table-drive module, be used for to preserve the code conversion table-drive, record the corresponding relation of the code value of identical characters in the code value of character in the ASCII ASCII character table and the global system for mobile communications GSM code table in the described code conversion table-drive;
Described short message receives module, is used for receiving short message;
Described short message code conversion module, be used for after described short message reception module receives short message, when transmit leg adopts different short message type of codings from the recipient, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from described code conversion table-drive, obtain the code value of the short message type of coding that the recipient corresponding to code value of short message adopt.
Further, in described code conversion table-drive, also record the corresponding relation of the code value that is included in the code value that is not included in the character in the GSM code table in the ASCII character table and the character in the GSM code table, described to be included in the code value that is not included in the character in the GSM code table in the ASCII character table corresponding with identical code value in the GSM code table, is provided with the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table in described code conversion table-drive.
Further, described short message code conversion module, concrete being used for when transmit leg adopts the type of coding recipient of ASCII character to adopt the type of coding of GSM code, from the code value of the ASCII character table of described code conversion table-drive, search the code value of the short message that receives, obtain the code value of GSM code table corresponding with the code value of the ASCII character table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
Further, described short message code conversion module, concrete being used for when transmit leg adopts the type of coding recipient of GSM code to adopt the type of coding of ASCII character, from the code value of the GSM code table of described code conversion table-drive, search the code value of the short message that receives, and according to the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table, obtain the code value of default ASCII character table corresponding with the code value of the GSM code table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
In sum, the present invention is by increasing the code conversion table-drive in short message service center, realize self-defined code table conversion, can be reduced in the probability that the rear content of short message of type of coding conversion makes a mistake, and, no matter short message service center in which country area uses, can realize self-defined code table conversion by the code conversion table-drive, do not need the new code table translation function of interim exploitation.
Description of drawings
Fig. 1 is the schematic diagram of the basic code table of existing GSM;
Fig. 2 is the schematic diagram of existing GSM expansion code table;
Fig. 3 is the schematic diagram of the basic code table of existing ASCII;
Fig. 4 is the schematic diagram of existing ISO_8859 code table;
Fig. 5 is that the present invention adopts the code conversion table-drive to carry out the Organization Chart of code conversion;
Fig. 6 is the schematic diagram of the code value corresponding relation of code conversion table-drive of the present invention;
Fig. 7 is the flow chart that short message is carried out the method for code conversion of the present invention;
Fig. 8 is the Organization Chart that short message is carried out the device of code conversion of the present invention.
Embodiment
Find to cause short message service center in the present embodiment after short message being carried out the code table conversion, content of short message after occurring changing is to have the not identical character of a part of code value in GSM code table and the ASCII character table with the main cause that former content of short message not exclusively conforms to, although the code value of GSM code table and most of character of ASCII character table is identical, the not identical character of a part of code value that exists has caused the generation of the problems referred to above.For example, code value is that 0 character is " " in the GSM code table, and in the basic code table of ASCII code value be 0 be a sightless control character, the code value of " " character is 64 in the ASCII character table.
And the ASCII character table also comprises multiple expansion code table, and character corresponding to same code value also may be inconsistent in these ASCII expansion code tables.Shown in ISO 8859 code tables among Fig. 4, except english character, also have a lot of western language characters, they represent with different codings that respectively for example, ISO 8859-1 represents the West Europe code, ISO 8859-2 represents Central European code, the concrete code value of these yards is discrepant, and short message service center is in code table when conversion of doing short message, can't determine to adopt the code value in ASCII character table corresponding to the code value of content of short message of GSM code table.And, when short message service center uses in the country variant area, can be required to carry out the code table conversion of dialect; All coded systems can't be predicted by short message service center, often need the new code table translation function of interim customization in Process of Internationalizationand.
Increase the code conversion table-drive in short message service center in the present embodiment, can realize self-defined code table conversion by the code conversion table-drive.The user disposes the code table transformational relation as required, can adapt to various code tables, does not need to carry out extra coding.
Be illustrated in figure 5 as the Organization Chart that short message is carried out code conversion, the short message of short message service center's transmitting-receiving carries out the code value conversion through the code conversion table-drive according to transmit leg and recipient's type.If transmit leg is consistent with recipient's type, does not need to carry out the code value conversion, otherwise the code value of content of short message need to be converted to recipient's type of coding from the type of coding of transmit leg.
For example, when outside Short Message Entity sends SMS message to terminal, the type of coding of transmit leg is ASCII character, recipient's type of coding is the GSM code, therefore after the short message of outside Short Message Entity transmission is received by short message service center, content of short message need to be converted to the GSM code from ASCII character, terminal could be identified content of short message after receiving message like this.
Be illustrated in figure 6 as the schematic diagram of code conversion table-drive, the code conversion table-drive records the corresponding relation between the code value of identical characters in the code value of character in the ASCII character table and the GSM code table.
For example, code value is that 0 character is " " in the GSM code table, and in the basic code table of ASCII code value be 0 be a sightless control character, the code value of " " character is 64 in the ASCII character table.The above corresponding relation of definition in the code conversion table-drive, ASCII character 0x40 (64) is character "@", corresponding GSM code is the GSM code value of character "@", namely 0.
Also record the corresponding relation of the code value that is included in the code value that is not included in the character in the GSM code table in the ASCII character table and the character in the GSM code table in the code conversion table-drive, it is corresponding with identical code value in the GSM code table to be included in the code value that is not included in the character in the GSM code table in the ASCII character table.
For example, the corresponding invisible control character " NUL " of ASCII character 0x00 does not have character " NUL " in the GSM code table, and ASCII character 0x00 is corresponding GSM code value 0 still.
Therefore, many-to-one relation can appear in ASCII character and GSM code, i.e. ASCII character 0 and 64 corresponding GSM code 0 all.No problem when being transformed into the GSM code from ASCII character, but when being transformed into ASCII character from the GSM code, because there are many-one relationship in GSM code and ASCII character, can't determine to convert on earth which value.For example, when converting ASCII character to from GSM code 0, can't determine change into 0 or 64.Therefore, except the corresponding relation of configuration ASCII character and GSM code, also need the sign (with reference to figure 6) of the code value of a default ASCII character table corresponding to the code value of configuration flag GSM code table in the code conversion table-drive.For example, the code value 64 of ASCII character is configured to the acquiescence ASCII character value of the code value 0 of GSM code, and the code value 0 of GSM code converts the code value 64 of ASCII character to like this, rather than 0.
As shown in Figure 7, present embodiment short message is carried out the method for code conversion, comprising:
Step S701, (for example ISO8859-1 is used in West Europe according to the on-site ASCII character encoding scheme of short message service center, ISO8859-4 is used in Northern Europe, ISO8859-6 is used in the Arabic area), the corresponding relation of the code value of identical characters in the code value of character and the GSM code table in the configuration ASCII character table;
Step S702 in the code conversion table-drive, is default ASCII character value of each GSM code value configuration, and each GSM code value must and can only have a default ASCII character value;
Step S703, short message service center is after receiving short message, when transmit leg adopts the type of coding recipient of ASCII character to adopt the type of coding of GSM code, because there is not many-to-one relationship in ASCII character to the GSM code, namely the code value of each ASCII character has the code value of a unique GSM code corresponding with it, so, directly from the code value of the ASCII character table of code conversion table-drive, search the code value of the short message that receives, obtain the code value of GSM code table corresponding with the code value of the ASCII character table that finds in the code conversion table-drive, finish the code conversion of the short message that receives;
Step S704, short message service center is after receiving short message, when transmit leg adopts the type of coding recipient of GSM code to adopt the type of coding of ASCII character, because there are many-to-one relationship in the code value of GSM code and the code value of ASCII character, the code value that namely code value of certain GSM code may corresponding a plurality of ASCII character, so, from the code value of the GSM code table of code conversion table-drive, search the code value of the short message that receives, and according to the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table, obtain the code value of default ASCII character table corresponding with the code value of the GSM code table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
As shown in Figure 8, present embodiment also provides a kind of short message is carried out the device of code conversion, comprising: code conversion table-drive module, short message receive module and short message code conversion module, wherein:
Code conversion table-drive module be used for to be preserved the code conversion table-drive, records the corresponding relation of the code value of identical characters in the code value of character in the ASCII ASCII character table and the global system for mobile communications GSM code table in the code conversion table-drive;
Short message receives module, is used for receiving short message;
Short message code conversion module, be used for after short message reception module receives short message, when transmit leg adopts different short message type of codings from the recipient, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from the code conversion table-drive, obtain the code value of the short message type of coding that the recipient corresponding to code value of short message adopt.
In the code conversion table-drive, also record the corresponding relation of the code value that is included in the code value that is not included in the character in the GSM code table in the ASCII character table and the character in the GSM code table, it is corresponding with identical code value in the GSM code table to be included in the code value that is not included in the character in the GSM code table in the ASCII character table, is provided with the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table in the code conversion table-drive.
Short message code conversion module, concrete being used for when transmit leg adopts the type of coding recipient of ASCII character to adopt the type of coding of GSM code, from the code value of the ASCII character table of code conversion table-drive, search the code value of the short message that receives, obtain the code value of GSM code table corresponding with the code value of the ASCII character table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
Short message code conversion module, concrete being used for when transmit leg adopts the type of coding recipient of GSM code to adopt the type of coding of ASCII character, from the code value of the GSM code table of code conversion table-drive, search the code value of the short message that receives, and according to the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table, obtain the code value of default ASCII character table corresponding with the code value of the GSM code table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
ASCII character table in the present embodiment comprises the basic code table of ASCII and one or more ASCII expansion code table; The GSM code table comprises the basic code table of GSM and GSM expansion code table.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind is carried out the method for code conversion to short message, comprising:
Short message service center preserves the code conversion table-drive, records the corresponding relation of the code value of identical characters in the code value of character in the ASCII ASCII character table and the global system for mobile communications GSM code table in the described code conversion table-drive;
After described short message service center receives short message, when transmit leg adopts different short message type of codings from the recipient, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from described code conversion table-drive, obtain the code value of the short message type of coding that the recipient corresponding to code value of short message adopt.
2. the method for claim 1, it is characterized in that, also record the corresponding relation of the code value that is included in the code value that is not included in the character in the GSM code table in the ASCII character table and the character in the GSM code table in described code conversion table-drive, described to be included in the code value that is not included in the character in the GSM code table in the ASCII character table corresponding with identical code value in the GSM code table.
3. method as claimed in claim 2 is characterized in that, is provided with the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table in described code conversion table-drive.
4. method as claimed in claim 3, it is characterized in that, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from described code conversion table-drive, obtain the code value of the short message type of coding that the recipient corresponding to code value of short message adopt, and comprising:
When described short message service center adopts the type of coding recipient of ASCII character to adopt the type of coding of GSM code at transmit leg, from the code value of the ASCII character table of described code conversion table-drive, search the code value of the short message that receives, obtain the code value of GSM code table corresponding with the code value of the ASCII character table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
5. method as claimed in claim 3, it is characterized in that, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from described code conversion table-drive, obtain the code value of the short message type of coding that the recipient corresponding to code value of short message adopt, and comprising:
When described short message service center adopts the type of coding recipient of GSM code to adopt the type of coding of ASCII character at transmit leg, from the code value of the GSM code table of described code conversion table-drive, search the code value of the short message that receives, and according to the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table, obtain the code value of default ASCII character table corresponding with the code value of the GSM code table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
6. the method for claim 1 is characterized in that, described ASCII character table comprises the basic code table of ASCII and one or more ASCII expansion code table; Described GSM code table comprises the basic code table of GSM and GSM expansion code table.
7. one kind is carried out the device of code conversion to short message, and comprising: code conversion table-drive module, short message receive module and short message code conversion module, wherein:
Described code conversion table-drive module, be used for to preserve the code conversion table-drive, record the corresponding relation of the code value of identical characters in the code value of character in the ASCII ASCII character table and the global system for mobile communications GSM code table in the described code conversion table-drive;
Described short message receives module, is used for receiving short message;
Described short message code conversion module, be used for after described short message reception module receives short message, when transmit leg adopts different short message type of codings from the recipient, the short message type of coding that adopts according to transmit leg is searched the code value of the short message that receives from described code conversion table-drive, obtain the code value of the short message type of coding that the recipient corresponding to code value of short message adopt.
8. device as claimed in claim 7, it is characterized in that, in described code conversion table-drive, also record the corresponding relation of the code value that is included in the code value that is not included in the character in the GSM code table in the ASCII character table and the character in the GSM code table, described to be included in the code value that is not included in the character in the GSM code table in the ASCII character table corresponding with identical code value in the GSM code table, is provided with the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table in described code conversion table-drive.
9. device as claimed in claim 8 is characterized in that:
Described short message code conversion module, concrete being used for when transmit leg adopts the type of coding recipient of ASCII character to adopt the type of coding of GSM code, from the code value of the ASCII character table of described code conversion table-drive, search the code value of the short message that receives, obtain the code value of GSM code table corresponding with the code value of the ASCII character table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
10. device as claimed in claim 8 is characterized in that:
Described short message code conversion module, concrete being used for when transmit leg adopts the type of coding recipient of GSM code to adopt the type of coding of ASCII character, from the code value of the GSM code table of described code conversion table-drive, search the code value of the short message that receives, and according to the sign of the code value of a default ASCII character table corresponding to the code value of mark GSM code table, obtain the code value of default ASCII character table corresponding with the code value of the GSM code table that finds in the code conversion table-drive, finish the code conversion of the short message that receives.
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| CN2012104719541A CN102970661A (en) | 2012-11-20 | 2012-11-20 | Method and device for code conversion of short messages |
| PCT/CN2013/076968 WO2013182079A1 (en) | 2012-11-20 | 2013-06-08 | Short message transcoding method and device |
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| CN2012104719541A CN102970661A (en) | 2012-11-20 | 2012-11-20 | Method and device for code conversion of short messages |
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| CN106604246A (en) * | 2016-12-09 | 2017-04-26 | 惠州Tcl移动通信有限公司 | Method and system for setting the short message coding range based on national codes and mobile terminal |
| CN106604246B (en) * | 2016-12-09 | 2020-08-11 | 惠州Tcl移动通信有限公司 | Method, system and mobile terminal for setting short message coding range based on country code |
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| WO2013182079A1 (en) | 2013-12-12 |
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