KR20110045931A - Message compression processing system and message compression processing method - Google Patents

Message compression processing system and message compression processing method Download PDF

Info

Publication number
KR20110045931A
KR20110045931A KR1020090102688A KR20090102688A KR20110045931A KR 20110045931 A KR20110045931 A KR 20110045931A KR 1020090102688 A KR1020090102688 A KR 1020090102688A KR 20090102688 A KR20090102688 A KR 20090102688A KR 20110045931 A KR20110045931 A KR 20110045931A
Authority
KR
South Korea
Prior art keywords
message
user
dictionary
compressed
call
Prior art date
Application number
KR1020090102688A
Other languages
Korean (ko)
Inventor
최우용
Original Assignee
에스케이 텔레콤주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 에스케이 텔레콤주식회사 filed Critical 에스케이 텔레콤주식회사
Priority to KR1020090102688A priority Critical patent/KR20110045931A/en
Publication of KR20110045931A publication Critical patent/KR20110045931A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Abstract

PURPOSE: A message compression processing system and message compression processing method are provided to apply a user definition dictionary when compressing a call message by using SigComp End-point in IMP network. CONSTITUTION: A terminal device(100) transmits a compressed call message and a user definition dictionary. A proxy server(200) receives the compressed call message and the user definition dictionary from the terminal device. The proxy server performs the decompression of the compacted call message on the user definition dictionary. The proxy server compresses a call message based on the user definition dictionary.

Description

MESSAGE COMPRESSION PROCESSING SYSTEM AND MESSAGE COMPRESSION PROCESSING METHOD}

The present invention relates to a message compression processing system, and more particularly, when a call message is exchanged between a terminal device and a proxy server operating as a SigComp end-point in an IMS network, when a call message is to be compressed using SigComp. The present invention relates to a message compression processing system and a message compression processing method capable of improving a compression ratio by applying a dictionary, a message compression processing method of a terminal apparatus and a terminal apparatus, and a message compression processing method of a proxy server and a proxy server.

Text-based protocols, such as SIP or SDP, have a message size of at least several hundred bytes and over 2,000 bytes. Therefore, in a resource-limited wireless communication network, a large sized call message may not only efficiently use limited radio resources but may also cause transmission delays. In order to solve this problem, the transmission time can be reduced by compressing a call message using SigComp (Signaling Compression).

The compression algorithm used in the SigComp method has a feature that the compression ratio is increased when the client and the server share the string repeated in the call message in advance. In particular, in the case of SIP call messages, the occurrence of repetitive text strings is high, so that the compression rate can be improved by sharing the text strings frequently used in SIP messages with the client terminal and the server.

In case of using static dictionary among compression algorithms used in existing SigComp method, it defines static string that frequently appears in SIP and SDP and static dictionary that defines all SigComp end-points, that is, strings that all terminal devices frequently appear in SIP and SDP. Save it as However, as shown in FIGS. 8 to 10, the SIP call messages used in the IMS network have a high weight of information (underlined information) that is variously changed / determined by the user. Since this information cannot be included in the static dictionary shared by all users, compression efficiency is reduced when only the static dictionary is used.

In addition, among the compression algorithms used in the existing SigComp method, call message information previously sent in the case of dynamic compression is used, and the received message information in the case of shared compression among the compression algorithms used in the existing SigComp method, is used as a dictionary. . In this case, all information duplicated for each call message is included in the dictionary, so the compression rate is the best, but the performance is deteriorated, and all call messages sent and received between the terminal and the server must be stored as a state. It's more likely to contain strings, and it's a waste of memory. In addition, when SigComp is applied to SIP, the minimum value of memory to store state is 2048 byte (RFC 5049). Therefore, when storing the message message exceeding this as state, the terminal and server have the same dictionary. It is hard to guarantee that.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a user-defined dictionary having substitution information corresponding to at least one character string included in a call message to be transmitted through a call session. Generates a compressed call message and the user-defined dictionary by compressing the call message based on the user-defined dictionary, and transmits the compressed call message and the user-defined dictionary from the terminal device. The proxy server receives the decompression of the compressed call message based on the user-defined dictionary, and the proxy server responds to the call to the terminal device in response to the call message based on the user-defined dictionary. Message compression processing system and message compression processing room for compressing and transmitting In order to improve the compression rate by applying a user-defined dictionary when compressing a call message using SigComp when exchanging a call message between a proxy server and a terminal device operating as SigComp end-point in IMS network.

The present invention was created in view of the above circumstances, and another object to be achieved in the present invention is to provide a user-defined dictionary having substitution information corresponding to at least one string included in a call message to be transmitted through a call session. A terminal device and a terminal device for generating a compressed message by compressing the call message to be transmitted based on the user-defined dictionary, and transmitting the compressed message to the outside through the call session. By providing a processing method, when a call message is exchanged between a terminal device operating as a SigComp end-point and a proxy server in an IMS network and a call message is compressed using SigComp, a user-defined dictionary is applied to improve the compression rate. .

The present invention has been made in view of the above situation, and another object of the present invention is to decompress when a compressed message is received from an external terminal device and executed by a predetermined code information field included in the received compressed message. According to the function, as a result of recognizing / determining dictionary type flag information included in the call compression message field of the received compressed message and recognizing / determining the dictionary type flag information, the dictionary type flag information includes a user-defined dictionary. If it is determined that the dictionary type flag information indicating, the user-defined dictionary and the user-defined dictionary ID information is extracted from the call compression message field to match the user-defined dictionary ID information and stored, and the user-defined dictionary Within the compressed message based on the stored user-defined dictionary corresponding to ID information. If the compressed call message is decompressed and the dictionary type flag information is recognized / determined, it is determined that the dictionary type flag information indicates that the dictionary type flag information does not include a user-defined dictionary. SigComp in the IMS network by providing a proxy server and a proxy server message compression processing method for recognizing a corresponding user-defined dictionary corresponding to dictionary ID information and decompressing the compressed call message in the compressed message based on the user-defined dictionary. When exchanging a call message between an end-point terminal device and a proxy server, the compression rate is improved by applying a user-defined dictionary when compressing the call message using SigComp.

A message compression processing system according to a first aspect of the present invention for achieving the above object is a user having substitution information corresponding to at least one string included in a call message to be transmitted through a call session according to a preset generation rule A terminal device generating a definition dictionary, compressing the call message based on the user-defined dictionary, and transmitting a compressed call message and the user-defined dictionary; And when the compressed call message and the user-defined dictionary are received from the terminal device, decompress the compressed call message based on the user-defined dictionary, and return to the terminal device in response to the call message. It includes a proxy server for compressing and transmitting a call message based on the user-defined dictionary.

A terminal device according to a second aspect of the present invention for achieving the above object is a terminal control unit for generating a call message to be transmitted through a call session, transmitting the message to the outside and receiving from the outside; A user-defined dictionary generation unit generating a user-defined dictionary having substitution information corresponding to at least one string included in the call message according to a preset dictionary generation rule; And a compressed message generating unit for compressing a call message to be transmitted through the call session based on the user-defined dictionary, generating a compressed message, and providing the compressed message to the terminal controller.

Preferably, the user-defined dictionary generation unit, according to the compression ratio selection information input from the user, at least one of the Pudlic ID information of the terminal, Pravate ID information of the terminal, IP information of the terminal, Port information of the terminal, service domain information A user-defined dictionary having substitution information corresponding to a character string may be generated, and the user-defined dictionary may be matched with the user-defined dictionary ID information and stored in the dictionary storage.

Preferably, the compressed message generation unit compresses the call message generated by the terminal control unit based on the user-defined dictionary, dictionary type flag information indicating whether the user-defined dictionary is included, the user-defined dictionary, and the A compressed message having a length information of a user-defined dictionary, ID information of the user-defined dictionary, and a call compression message field including at least one of the compressed call message may be generated and provided to the terminal controller.

Preferably, when a compressed message is received from the outside in response to the transmitted compressed message, it is executed by a predetermined code information field included in the received compressed message, and the dictionary included in the call compression message field of the received compressed message. The apparatus may further include a decompression execution unit configured to decompress the compressed call message based on the user-defined dictionary corresponding to the user-defined dictionary ID information based on the type flag information, the user-defined dictionary ID information and the compressed call message. .

Preferably, the compressed message generation unit, the user-defined dictionary corresponding to the user-defined dictionary ID information recognized in the call compression message field of the received compressed message to the call message generated after the received compressed message To generate a compressed message having dictionary type flag information indicating that the user-defined dictionary is not included, ID information of the user-defined dictionary, and a call compression message field including the compressed call message. Can be.

Preferably, the user-defined dictionary generation unit, at the time of occurrence of a predetermined user-defined dictionary regeneration event, the substitution information corresponding to at least one string included in the call message to be transmitted after the event occurs according to the pre-generation rule A new user-defined dictionary can be created and stored in the dictionary storage.

Preferably, the compressed message generating unit compresses a call message to be transmitted to the outside after the event occurrence based on a previous user definition dictionary, dictionary type flag information indicating whether the user definition dictionary is included, and the new user. And a call compression message field including at least one of a definition dictionary, length information of the new user-defined dictionary, the previous user-defined dictionary ID information, the new user-defined dictionary ID information, and the compressed call message. You can create compressed messages.

Preferably, the compressed message generation unit may generate the compressed message by including a code information field for executing a decompression function for decompressing the compressed message on an external server that will receive the compressed message. have.

Proxy server according to a third aspect of the present invention for achieving the above object comprises a server control unit for establishing a call session with the terminal device for providing a communication service, and transmits and receives a message through the call session; And when a compressed message is received from an external terminal device through the server control unit, extracts a user-defined dictionary included in the received compressed message, stores the user-defined dictionary in a pre-storage unit, and compresses a call in the compressed message based on the user-defined dictionary. It includes a decompression unit that decompresses the message.

Preferably, the decompression performing unit is executed by a predetermined code information field included in the received compression message when the compressed message is received from an external terminal device through the server control unit, and the call compression message of the received compressed message is executed. If it is determined that the dictionary type flag information included in the field is dictionary type flag information indicating that it includes a user-defined dictionary, the user-defined dictionary and the user-defined dictionary ID information are extracted from the call compression message field and the user-defined dictionary is recalled. Matching with user-defined dictionary ID information can be stored in the dictionary storage.

Preferably, if the decompression unit determines that the dictionary type flag information included in the call compression message field of the received compressed message does not include a user-defined dictionary, the call compression message field The user dictionary may recognize the user definition dictionary corresponding to the user definition dictionary ID information of the decompression unit, and decompress the compressed call message in the compressed message based on the user definition dictionary.

Preferably, the user-defined dictionary corresponding to the user-defined dictionary ID information recognized in the call compression message field of the received compressed message to the call message generated by the server control unit in response to the compressed message received from the external terminal device A compressed message having a dictionary type flag information indicating that the user-defined dictionary is not included, ID information of the user-defined dictionary, and a call compression message field including the compressed call message. The apparatus may further include a compressed message generation unit provided to the server control unit.

Preferably, the compressed message generation unit includes a code information field for executing a decompression function for decompressing the compressed message on an external terminal device that will receive the compressed message, to generate the compressed message. Can be.

Preferably, the decompressing unit determines that the dictionary type flag information included in the call compression message field of the received compressed message is dictionary type flag information indicating that the user defined dictionary is included and is transferred to the call compression message field. If there is user-defined dictionary ID information and new user-defined dictionary ID information, decompress the compressed call message in the compressed message based on the user-defined dictionary corresponding to the previous user-defined dictionary ID information, the call compression message field Extracts the user-defined dictionary and the new user-defined dictionary ID information and matches the user-defined dictionary with the new user-defined dictionary ID information to store in the dictionary storage.

Message compression processing method according to a fourth aspect of the present invention for achieving the above object is a user-defined dictionary having substitution information corresponding to at least one string included in the call message to be transmitted by the terminal device via the call session Generating according to a preset pre-generation rule; The terminal device compressing the call message based on the user-defined dictionary and transmitting a compressed call message and the user-defined dictionary; If the compressed call message and the user-defined dictionary are received from the terminal device, decompressing the compressed call message based on the user-defined dictionary; And transmitting, by the proxy server, a call message to be returned to the terminal device in response to the call message based on the user-defined dictionary.

Message compression processing method of a terminal device according to a fifth aspect of the present invention for achieving the above object is based on a user-defined dictionary having substitution information corresponding to at least one string included in a call message to be transmitted through a call session A dictionary generation step of generating according to a preset dictionary generation rule; A compressed message generation step of generating a compressed message by compressing the call message to be transmitted based on the user-defined dictionary; And a transmission step of transmitting the compressed message to the outside through the call session.

Preferably, the compressed message generation step, and compresses the call message generated to be transmitted to the outside based on the user-defined dictionary, dictionary type flag information indicating whether or not to include the user-defined dictionary, the user-defined dictionary and And a compressed message having a call compression message field including at least one of length information of the user defined dictionary, ID information of the user defined dictionary, and the compressed call message.

Preferably, when a compressed message is received from the outside in response to the compressed message transmitted through the transmission step, the received compressed message according to a decompression function executed by a predetermined code information field included in the received compressed message. Decompressing the compressed call message based on the user-defined dictionary corresponding to the user-defined dictionary ID information based on the dictionary type flag information, the user-defined dictionary ID information, and the compressed call message included in the call compression message field of the user. It may further comprise a decompression step.

Preferably, when a predetermined user-defined dictionary regeneration event occurs, the new user-defined dictionary having substitution information corresponding to at least one string included in a call message to be transmitted after the event is generated according to the pre-generation rule. The method may further include generating a new dictionary generation step.

Preferably, the call message to be transmitted to the outside after the occurrence of the event is compressed based on a previous user-defined dictionary, dictionary type flag information indicating whether the user-defined dictionary, the new user-defined dictionary, and the new An update to generate a compressed message having a call compression message field including length information of a user-defined dictionary, the previous user-defined dictionary ID information, the new user-defined dictionary ID information, and at least one of the compressed call message. The method may further include generating a compressed message.

Message compression processing method of the proxy server according to the sixth aspect of the present invention for achieving the above object is a decompression function that is executed by a predetermined code information field included in the received compression message, when a compression message is received from an external terminal device Acknowledging / determining dictionary type flag information included in a call compression message field of the received compressed message; If it is determined that the dictionary type flag information is dictionary type flag information indicating that the dictionary type flag information includes a user-defined dictionary, the user-defined dictionary and user-defined dictionary ID information is determined in the call compression message field. Extracting and storing the user-defined dictionary by matching the user-defined dictionary ID information and decompressing the compressed call message in the compressed message based on the stored user-defined dictionary corresponding to the user-defined dictionary ID information; And if it is determined that the dictionary type flag information is dictionary type flag information indicating that the dictionary type flag information does not include a user-defined dictionary, the device corresponds to the user-defined dictionary ID information of the call compression message field. Recognizing the corresponding user-defined dictionary stored and decompressing the compressed call message in the compressed message based on the user-defined dictionary.

Preferably, the call message generated to reply in response to the compressed message received from the external terminal device is based on the corresponding user defined dictionary corresponding to the user defined dictionary ID information recognized in the call compressed message field of the received compressed message. The terminal to generate a compressed message having dictionary type flag information indicating that the user-defined dictionary is not included, ID information of the user-defined dictionary, and a call compression message field including the compressed call message. The method may further include transmitting to the device.

Preferably, it is determined that the dictionary type flag information included in the call compression message field of the received compressed message is dictionary type flag information indicating that it includes a user-defined dictionary, and the previous user-defined dictionary ID information is included in the call compression message field. If new user-defined dictionary ID information exists, the compressed call message in the compressed message is decompressed based on the user-defined dictionary corresponding to the previous user-defined dictionary ID information, and the user-defined dictionary in the call compression message field. And extracting the new user-defined dictionary ID information and matching the user-defined dictionary with the new user-defined dictionary ID information.

Accordingly, according to the message compression processing system and the message compression processing method of the present invention, a user-defined dictionary (USD) specific to the terminal itself generated internally by the terminal device is loaded on the first call message and provided to an external server, and the server calls the first call. By receiving and storing a user-defined dictionary (USD) through the message, the call message is compressed and decompressed using the user-defined dictionary (USD) when exchanging a call message between a terminal and a server operating as a SigComp end-point, The user-defined dictionary (USD) of the terminal device and the server can be updated as needed, so that the compression rate is effectively improved compared to the existing method when exchanging call messages between the terminal device 100 and the proxy server 200 that operate as the SigComp end-point. Can ensure the reliability of compression and decompression

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 is a diagram illustrating a network performance verification system according to a preferred embodiment of the present invention.

As shown in FIG. 1, a network performance verification system according to the present invention includes a user definition having substitution information corresponding to at least one string included in a call message to be transmitted through a call session according to a preset generation rule. A terminal device 100 generating a dictionary, compressing the call message based on the user-defined dictionary, and transmitting the compressed call message and the user-defined dictionary; When the user-defined dictionary is received, the compressed call message is decompressed based on the user-defined dictionary, and the call message to be returned to the terminal device 100 in response to the call message is compressed based on the user-defined dictionary. Proxy server 200 and a communication network (1) for transmitting by.

In this case, the terminal apparatus 100 may be a form of a terminal using a communication service by setting up a call session to the communication network 1 via the proxy server 200.

The terminal device 100 corresponds to at least one string included in a call message to be transmitted through a call session according to a preset generation rule when exchanging a call message with the proxy server 200 to use a communication service. By generating a user-defined dictionary having a substitution information, and by compressing the call message based on the generated user-defined dictionary to transmit the compressed call message and the user-defined dictionary to the proxy server 200, based on the user-defined dictionary The compressed call message is exchanged with the proxy server 200.

The proxy server 200 relays the terminal device 100 to use the communication service to the communication network 1.

When the proxy server 200 receives the compressed call message and the user-defined dictionary from the terminal device 100 when exchanging a call message with the terminal device 100 to use a communication service, the user-defined dictionary. By decompressing the compressed call message on the basis of, and by compressing and transmitting the call message to be returned to the terminal device 100 in response to the call message based on the user-defined dictionary, compression based on the user-defined dictionary Exchanges the received call message with the terminal device 100.

Hereinafter, the configuration of the terminal device 100 according to the present invention will be described in more detail with reference to FIG. 2.

The terminal device 100 according to the present invention generates a call message to be transmitted through a call session, and transmits the message to the outside and receives the message from the outside and the call according to a preset pre-generation rule. A user-defined dictionary generation unit 150 for generating a user-defined dictionary having substitution information corresponding to at least one string included in the message, and compressing a call message to be transmitted through the call session based on the user-defined dictionary. And a compressed message generator 120 for generating a compressed message and providing the compressed message to the terminal controller 110.

The terminal control unit 110 is a function unit for managing call message exchange operations with the proxy server 200 in order to use a communication service, and includes a call message (for example, a register message or an invite message) to be transmitted through a call session. , Update messages, etc.), and transmit / receive messages to the outside.

The user-defined dictionary generation unit 150 generates a user-defined dictionary having substitution information corresponding to at least one string included in the call message according to the preset dictionary generation rule 155. Here, the preset dictionary generation rule 155 finds a string of characters frequently appearing in a call message and matches the corresponding string with substitution information including a specific position and length in the dictionary, and uses the existing SigComp (Signaling Compression) scheme. You can use the policy used to create the dictionary in.

More specifically, the user-defined dictionary generation unit 150, according to the compression ratio selection information input from the user, Pudlic ID information of the terminal, Pravate ID information of the terminal, IP information of the terminal, Port information of the terminal, service domain information A user specific dictionary (USD) having substitution information corresponding to at least one of the strings may be generated, and the generated user dictionary (USD) is matched with the corresponding user-defined dictionary ID information and stored in the dictionary storage unit ( 140).

For example, the compression ratio selection information input from the user may be selection information for the maximum, normal, and minimum of the compression ratio. When the maximum compression ratio selection information is input from the user, the user-defined dictionary generation unit 150 may determine the Pudlic of the terminal. A user-defined dictionary (USD) having ID information, Pravate ID information of the terminal, IP information of the terminal, Port information of the terminal, and substitution information corresponding to a character string of the service domain information can be generated, and the minimum compression ratio selection information from the user is generated. If is input, the user-defined dictionary generation unit 150, Pudlic ID information of the terminal, Pravate ID information of the terminal, IP information of the terminal, port information of the terminal, service domain information of two (for example, Pudlic ID information of the terminal, A user-defined dictionary (USD) having substitution information corresponding to a character string of the terminal's IP information) may be generated.

In addition, the custom dictionary generation unit 150 matches the generated custom dictionary (USD) with ID information of the corresponding custom dictionary (USD) (eg, partial state ID of the custom dictionary (USD)) and stores the dictionary. It may be stored in the unit 140.

The format of the user-defined dictionary (USD) generated in this way may be as shown in FIG. 7. Here, the Pudlic ID information of the terminal may correspond to a mobile directory number (MDN) of the terminal, the IP information of the terminal, the IP of the terminal, the port information of the terminal, and the service domain information of the terminal correspond to telcoware.com. Of course, the user-defined dictionary (USD) format of FIG. 7 is only an example.

Hereinafter, for convenience of description, the custom dictionary generated by the custom dictionary generation unit 150 will be referred to as a custom dictionary USD1.

The compressed message generator 120 compresses a call message generated by the terminal controller 110 to be transmitted through a call session based on a user-defined dictionary (USD) generated by the user-defined dictionary generator 150. It generates and provides a compressed message to the terminal control unit 110. Accordingly, the terminal controller 110 may provide a compressed message compressed with a call message using a user-defined dictionary (USD) to the proxy server 200 to the outside.

In more detail, the compressed message generator 120 compresses a call message generated by the terminal controller 110 based on a user-defined dictionary (USD), and indicates a dictionary type indicating whether the user-defined dictionary (USD) is included. Compressed compressed flag information, user defined dictionary (USD), user defined dictionary (USD) length, user defined dictionary (USD) ID information, and call message using user defined dictionary (USD) Generate a compressed message having a call compression message field that includes at least one of the call messages.

The compressed message generation unit 120 compresses the first call message to be transmitted to the outside based on the user-defined dictionary (USD1), dictionary type flag information indicating that the user-defined dictionary (USD1), and the user-defined dictionary ( USD1), length information of user defined dictionary (USD1), user defined dictionary (USD1) ID information, and a compressed message having a call compression message field including the compressed call message.

For example, since the first call message posted by the terminal device 100 to the proxy server 200 in the IMS network is always a register message, the compressed message generating unit 120 may generate the first call message based on the user-defined dictionary (USD1). In-register message is compressed and dictionary type flag information (eg 0x01) indicating that the user-defined dictionary (USD1) is included, the user-defined dictionary (USD1) used for compression, the length information of the user-defined dictionary (USD1), A compressed message having user-defined dictionary ID information (eg, partial state ID of the user-defined dictionary (USD1) used for compression) and a call compression message field including the compressed register message is generated. In this case, the call compression message field includes dictionary type flag information (for example, 0x01) in the first byte, next length information of the user-defined dictionary (USD1), and then contains the user-defined dictionary (USD1). , And then include user defined dictionary ID information (e.g., partial state ID of user defined dictionary (USD1)), and then include the compressed register message.

Of course, the compressed message generation unit 120, dictionary type flag information (for example, 0x01) indicating that the user definition dictionary (USD1) is included without compressing the first call message, the user-defined dictionary (USD1) and the user-defined dictionary Compression with length information of (USD1), user-defined dictionary ID information (e.g. partial state ID of user-defined dictionary (USD1)), and a call compression message field containing the first uncompressed call message, i.e., a register message. You might be able to generate a message.

Here, the compressed message generating unit 120, a code information field for executing a decompression function for decompressing the compressed message on an external server (for example, proxy server 200) that will receive the compressed message It is preferable to generate by including in the compressed message. This code information (Bytecode) corresponds to a machine language that is executed in a decompression function (eg, UDVM) that decompresses on an external server (eg, proxy server 200) that will receive a compression message. You can get it by interpreting the defined UDVM assembly.

Accordingly, the terminal controller 110 may transmit the compressed message compressed by using the user defined dictionary USD1 to the proxy server 200.

When the terminal apparatus 100 according to the present invention receives a compressed message from the outside through the terminal control unit 110 in response to the compressed message transmitted to the outside, the terminal apparatus 100 includes a predetermined code information field included in the received compressed message. And executes the compression based on the user-defined dictionary corresponding to the user-defined dictionary ID information based on the dictionary type flag information and the user-defined dictionary ID information and the compressed call message included in the call compression message field of the received compressed message. The decompression unit 130 further decompresses the received call message.

That is, the decompressing unit 130 receives a compressed message (for example, a compressed message corresponding to a 200 OK message) from the outside in response to an externally transmitted compressed message (for example, a compressed message corresponding to a register message). It is executed by the code information field included in the received compressed message. The decompressing unit 130 is preferably in the form of a virtual machine (eg, UDVM) of a decompression function that is executed by code information (Bytecode) of a code information field to perform decompression.

Accordingly, the decompression performing unit 130 is executed by the code information field included in the received compressed message to check the dictionary type flag information of the first byte included in the call compression message field of the received compressed message. If it is determined that the dictionary type flag information indicates that the dictionary type flag information does not include the user-defined dictionary (for example, 0x02), the decompression unit 130 determines the user-defined dictionary ID, which is the next byte of the call compression message field. Recognizing information (eg, partial state ID of the user-defined dictionary (USD1)), the dictionary storage unit 140 recognizes the user-defined dictionary (eg, USD1) corresponding to the user-defined dictionary ID information. Accordingly, the decompression performing unit 130 may decompress the compressed call message (eg, 200 OK message) included in the call compression message field of the compressed message based on the recognized user-defined dictionary USD1.

Then, the compressed message generation unit 120, the user-defined dictionary corresponding to the user-defined dictionary ID information recognized in the call compression message field of the received compressed message to the call message generated to be transmitted after the compressed message received from the outside Compression based on a dictionary, generating a compressed message having dictionary type flag information indicating that the user-defined dictionary is not included, ID information of the user-defined dictionary, and a call compression message field including the compressed call message. do.

That is, when the compressed message generation unit 120 compresses a call message (eg, an invite message) to be transmitted after the first call message (eg, a register message) transmitted to the outside, the compressed message (previously received) Example: Compression based on a user defined dictionary (eg, USD1) corresponding to user defined dictionary ID information recognized in a call compression message field of a 200 OK message). Then, the compressed message generation unit 120, dictionary type flag information (for example, 0x02) indicating that the user-defined dictionary (USD1) is not included, and user-defined dictionary ID information (for example, the user-defined dictionary used for compression (USD1) ), And generates a compressed message having a call compression message field including the compressed call message (eg, compressed byte message).

In this case, the call compression message field includes dictionary type flag information (eg, 0x02) in the first byte, and then includes custom dictionary ID information (eg, partial state ID of the user-defined dictionary (USD1) used for compression). And preferably include the compressed call message (eg, a compressed invite message).

Of course, the compressed message generation unit 120 is preferably generated by including the above-described code information field in all the compressed messages after the compressed message corresponding to the first call message.

Accordingly, the terminal device 100 according to the present invention carries a user-defined dictionary (USD) specific to the terminal itself generated internally by the terminal device 100 in an external call server (for example, the proxy server 200). ), The transmitted call message can be compressed and transmitted using the user defined dictionary (USD), and the received call message can be decompressed using the user defined dictionary (USD1).

Here, in a situation in which the terminal device 100 transmits and receives a compressed message compressed using the user-defined dictionary (USD1) through a call session with the proxy server 200, an event that needs to be regenerated may occur. Can be. This regeneration event means that a case where the capability, service, user name, etc. of the terminal device 100 is changed occurs.

As such, when an event requiring regeneration of the user-defined dictionary occurs, the user-defined dictionary generation unit 150, according to the pre-generation rule 155, at least one included in the call message to be transmitted after the regeneration event occurs Create a new custom dictionary (e.g. USD2) with substitution information corresponding to the string and match the custom dictionary (USD2) with the corresponding custom dictionary ID information (e.g. partial state ID of the custom dictionary (USD2)). Store in the dictionary storage unit 140.

Accordingly, the compressed message generator 120 compresses the first call message to be transmitted to the outside after the regeneration event occurs based on a previous user definition dictionary, and includes dictionary type flag information indicating that the user definition dictionary is included, and A compressed message having a new user-defined dictionary, a length information of the new user-defined dictionary, the previous user-defined dictionary ID information, the new user-defined dictionary ID information, and a call compression message field including the compressed call message. Create

That is, the compressed message generation unit 120 compresses the first call message (eg, update message) to be transmitted to the outside after the regeneration event occurs based on the previous user definition dictionary (USD1), and the user definition dictionary (USD2). Pre-type flag information (e.g. 0x01), newly recreated user-defined dictionary (USD2), length information of new user-defined dictionary (USD2), and previous user-defined dictionary ID information (e.g. compression). Partial state ID of the custom dictionary (USD1) used), new custom dictionary ID information (e.g., partial state ID of the custom dictionary (USD2)), and the compressed call message (e.g., a compressed update message). Create a compressed message with a call compression message field containing).

Thus, the terminal controller 110 may provide a compressed message (including a new user-defined dictionary (USD2)) compressed to the proxy server 200 to the outside by compressing the call message using the user-defined dictionary (USD1).

The decompression unit 130 receives a compressed message (eg, a compressed message corresponding to a 200 OK message) from the outside in response to a compressed message (eg, a compressed message corresponding to an update message) transmitted to the outside. Then, the dictionary type flag information of the first byte included in the call compression message field of the received compressed message is checked. If it is determined that the dictionary type flag information indicates that the dictionary type flag information does not include the user-defined dictionary (for example, 0x02), the decompression unit 130 determines the user-defined dictionary ID, which is the next byte of the call compression message field. By recognizing the information (eg partial state ID of the user-defined dictionary (USD2)), the dictionary storage unit 140 recognizes the corresponding user-defined dictionary (eg, USD2) corresponding to the user-defined dictionary ID information. Accordingly, the decompression performing unit 130 may decompress the compressed call message (eg, 200 OK message) included in the call compression message field of the compressed message based on the recognized user-defined dictionary (USD2).

In addition, the terminal device 100 recognizes the user-defined dictionary ID information (for example, partial state ID of the user-defined dictionary USD2) included in the call compression message field of the received compressed message, thereby recognizing the proxy server 200. Since the terminal device 100 recognizes that the new user-defined dictionary USD2 is shared, it is possible to delete the previous user-defined dictionary USD1 from the dictionary storage 140. Such deletion may be requested to the pre-storage unit 140 by any one of the function of the decompression unit 130, the terminal control unit 110 or the user-defined dictionary generation unit 150.

As described above, the terminal device 100 according to the present invention loads a user-defined dictionary (USD) specific to the terminal itself generated internally by the terminal device 100 in an initial call message to an external server (eg, a proxy). By providing to the server 200, the call message is compressed and decompressed using a user-defined dictionary (USD) when exchanging call messages between the terminal device 100 operating as a SigComp end-point and the proxy server 200. In addition, since a user-defined dictionary (USD) of the terminal device 100 and the proxy server 200 can be updated as needed, call messages are exchanged between the terminal device 100 and the proxy server 200 operating as SigComp end-points. The compression ratio can be improved more effectively than the existing method, and the reliability of compression and decompression can be secured.

Hereinafter, a detailed configuration of the proxy server 200 according to the present invention will be described with reference to FIG. 3.

The proxy server 200 establishes a call session with the terminal apparatus 100 to provide a communication service, transmits and receives a message through the call session, and externally through the server controller 210. When the compressed message is received from the terminal device 100, the user-defined dictionary included in the received compressed message is extracted and stored in the dictionary storage unit 240, and the compressed call message in the compressed message is stored based on the user-defined dictionary. It includes a decompression performing unit 220 to decompress.

The server control unit 210 is a function unit for managing call message exchange operations with the terminal apparatus 100 to provide a communication service, and includes a call message (eg, a register message, a byte message, an update) received through a call session. And a call message (eg, a 200 OK message) as a response corresponding to the message and the like, and transmit / receive the message to the terminal device 100.

When the decompression execution unit 220 receives the compressed message from the external terminal device 100 through the server controller 210, the decompression performing unit 220 is executed by a predetermined code information field included in the received compressed message, If it is determined that the dictionary type flag information included in the call compression message field is dictionary type flag information indicating that it includes a user-defined dictionary, the user-defined dictionary and the user-defined dictionary ID information are extracted from the call compression message field. The dictionary is matched with the user-defined dictionary ID information and stored in the dictionary storage 240.

That is, the decompression performing unit 220 is executed by the code information field included in the received compressed message when a compressed message (eg, a register message or an invite message) is received from the external terminal device 100. . The decompressing unit 220 is preferably in the form of a virtual machine (eg, UDVM) of a decompression function that is executed by code information (Bytecode) of a code information field to perform decompression.

Accordingly, the decompression performing unit 220 is executed by the code information field included in the received compressed message to check the dictionary type flag information of the first byte included in the call compression message field of the received compressed message. If the dictionary type flag information indicates that the dictionary type flag information includes a user-defined dictionary, this compression message will be the first call message (for example, a register message) transmitted from the terminal device 100 to the proxy server 200. If the dictionary type flag information indicates that the dictionary type flag information does not include the user-defined dictionary, the current compressed message is the message after the first compressed message including the user-defined dictionary (eg, USD1) of the terminal device 100. will be.

If it is determined that the dictionary type flag information of the first byte included in the call compression message field of the received compressed message is dictionary type flag information (eg, 0x01) indicating that the dictionary type flag information includes a user-defined dictionary, the compressed message is compressed. The decommissioning unit 220 determines a user-defined dictionary (eg, user-defined dictionary (USD1)) and user-defined dictionary ID information in the call compression message field based on the user-defined dictionary length information corresponding to the next byte of the call compression message field. Example: Extract the partial state ID of the custom dictionary (USD1). The decompression unit 220 matches the extracted custom dictionary USD1 with the custom dictionary ID information (for example, partial state ID of the custom dictionary USD1) and stores the extracted custom dictionary USD1 in the dictionary storage 240. .

Then, the decompression execution unit 220, the user-defined dictionary (USD1) stored in the dictionary storage unit 240, that is, the user-defined dictionary ID information of the call compression message field (for example, partial of the user-defined dictionary (USD1)) The compressed call message (eg, register message) included in the call compression message field of the compressed message may be decompressed based on the corresponding user-defined dictionary (eg, USD1) corresponding to the state ID).

Meanwhile, as a result of checking the dictionary type flag information of the first byte included in the call compression message field of the received compressed message, it is determined that the dictionary type flag information (for example, 0x02) indicates that the dictionary type flag information does not include the user-defined dictionary. The decompression execution unit 220 recognizes the user-defined dictionary ID information (for example, partial state ID of the user-defined dictionary USD1), which is the next byte of the call compression message field, and corresponds to the user-defined dictionary ID information. The user-defined dictionary (eg, USD1) is recognized in the dictionary storage unit 240. Accordingly, the decompression performing unit 220 may decompress the compressed call message (eg, the invite message) included in the call compression message field of the compressed message based on the recognized user definition dictionary USD1.

In addition, the proxy server 200 according to the present invention recognizes the call message generated by the server controller 210 in response to the compressed message received from the external terminal device 100 in the call compression message field of the received compressed message. It further includes a compression message generation unit 230 for compressing based on the user-defined dictionary corresponding to the user-defined dictionary ID information.

When the server controller 210 generates a call message (eg, 200 OK message) in response to the compressed message received from the external terminal device 100, the compressed message generator 230 previously transmits the terminal device 100. Pre-storing the user-defined dictionary (eg, USD1) corresponding to the user-defined dictionary ID information recognized in the call compression message field of the compressed message (eg, the compressed message corresponding to the register message). Recognize in. Accordingly, the compressed message generation unit 230 compresses the call message (eg 200 OK message) based on the recognized user-defined dictionary (eg USD1).

In addition, the compressed message generation unit 230 includes dictionary type flag information (eg, 0x02) indicating that the user-defined dictionary (USD) is not included, and user-defined dictionary ID information (eg, user-defined dictionary (USD1) used for compression). ) And a compressed message having a call compression message field including the compressed call message (for example, 200 OK message) and provided to the server controller 210. In this case, the call compression message field includes dictionary type flag information (eg, 0x02) in the first byte, and then includes custom dictionary ID information (eg, partial state ID of the user-defined dictionary (USD1) used for compression). And preferably include the compressed call message (eg, a compressed invite message).

Here, the compressed message generator 230 includes, in the compressed message, a code information field for executing a decompression function for decompressing the compressed message on the external terminal device 100 that will receive the compressed message. Is preferably produced. This code information (Bytecode) corresponds to a machine language that is executed in a decompression function (for example, UDVM) that decompresses on the terminal device 100 that will receive the compressed message, and interprets the UDVM assembly defined in RFC 4464. You can get it.

Accordingly, the server controller 210 may provide a compressed message compressed to the external terminal device 100 using the user defined dictionary USD1.

Accordingly, the proxy server 200 according to the present invention receives a user-defined dictionary (USD) specialized for the terminal itself generated internally by the terminal device 100 through the first call message and stores it in the dictionary storage 240. In addition, the received call message can be decompressed using the user-defined dictionary (USD1) and the call message transmitted can be compressed using the user-defined dictionary (USD).

Meanwhile, the decompression performing unit 220 checks the dictionary type flag information of the first byte included in the call compression message field of the compressed message received from the terminal device 100, and the dictionary type flag information includes the user-defined dictionary. It is determined that the dictionary type flag information (for example, 0x01) indicating that the information is present, and whether the old user-defined dictionary ID information and the new user-defined dictionary ID information exist in the call compression message field.

Therefore, if both the old custom dictionary ID information and the new custom dictionary ID information exist in the call compression message field, the decompression execution unit 220 determines that the update request for the user-defined dictionary (USD), the previous user The user-defined dictionary (eg, USD1) corresponding to the definition dictionary ID information (eg, partial state ID of the user-defined dictionary (USD1) used for compression) is recognized by the dictionary storage 240, and the user-defined dictionary (eg: Decompresses the compressed call message (eg, update message) in the compressed message based on USD1). Then, the decompression execution unit 220, based on the user-defined dictionary length information of the call compression message field, the user-defined dictionary (for example, user-defined dictionary (USD2)) and the new user-defined dictionary ID information (in the call compression message field) Example: Extract the partial state ID of the user-defined dictionary (USD2). The decompression unit 220 matches the extracted custom dictionary USD2 with the custom dictionary ID information (for example, partial state ID of the custom dictionary USD2) and stores the extracted custom dictionary USD2 in the dictionary storage 240. .

Thereafter, the compressed message generator 230 generates a call message (eg, 200 OK message) in response to the received compressed message (eg, a compressed message corresponding to the update message). The partial state ID of the new user-defined dictionary ID information (eg, user definition dictionary (USD2)) recognized in the call compression message field of the compressed message (eg, the compressed message corresponding to the update message) previously received from the terminal device 100. Recognizing the corresponding user-defined dictionary (eg, USD2) corresponding to the) in the dictionary storage unit 240, and compresses the call message (eg 200 OK message) based on the user-defined dictionary (eg USD2). In addition, the compressed message generation unit 230 may include dictionary type flag information (eg, 0x02) indicating that the user-defined dictionary (USD) is not included, and user-defined dictionary ID information (eg, user-defined dictionary (USD2) used for compression). ) And a compressed message having a call compression message field including the compressed call message (for example, 200 OK message) and provided to the server controller 210.

Accordingly, the server controller 210 may provide the compressed message compressed to the external terminal device 100 using the newly updated user definition dictionary USD2.

Here, the proxy server 200, if the user-defined dictionary ID information included in the call compression message field of the received compressed message is a partial state ID of the newly updated user-defined dictionary (USD2), the proxy server 200 and the terminal Recognizing that the device 100 shares the new user-defined dictionary (USD2), it is possible to delete the previous user-defined dictionary (USD1) from the dictionary storage (240). Such deletion may be requested to the pre-storage unit 240 by the decompression unit 220 or the server control unit 210 or any one of the functional units.

As described above, the proxy server 200 according to the present invention receives a user-defined dictionary (USD) specialized for the terminal itself generated internally by the terminal device 100 through the first call message and pre-store 240 ), The call message is compressed and decompressed using a user-defined dictionary (USD) when exchanging a call message between the terminal device 100 and the proxy server 200 operating as a SigComp end-point. Since the user-defined dictionary (USD) of the terminal device 100 and the proxy server 200 can be updated, a call message exchange between the terminal device 100 and the proxy server 200 operating as a SigComp end-point can be performed. The compression ratio can be effectively improved, and the reliability of compression and decompression can be ensured.

As described above, in the message compression processing system according to the present invention, an external server (eg, a proxy server) is loaded with a user-defined dictionary (USD) specialized for the terminal itself generated internally by the terminal device 100 in the first call message. (200) and the proxy server 200 receives and stores a user-defined dictionary (USD) through the first call message, the call between the terminal device 100 and the proxy server 200 to operate as SigComp End-point When exchanging messages, the call message can be compressed and decompressed using the user-defined dictionary (USD), and the user-defined dictionary (USD) of the terminal device 100 and the proxy server 200 can be updated as necessary. When the call message exchange between the terminal device 100 and the proxy server 200 operating as an end-point can improve the compression rate more effectively than the conventional method, it is possible to secure the reliability of compression and decompression.

Hereinafter, a message compression processing method according to a preferred embodiment of the present invention will be described with reference to FIGS. 4 and 6. Here, for the convenience of description, the configuration shown in FIGS. 1 to 3 described above will be described with reference to the corresponding reference numerals.

First, a message compression processing method according to the present invention will be described with reference to FIG. 4.

According to the message compression processing method according to the present invention, the terminal device 100 is a preset dictionary (USD1) having a substitution information corresponding to at least one string included in the call message to be transmitted through the call session Generate and store according to the pre-generation rule (S10).

In addition, the terminal device 100 compresses the call message generated to be transmitted through the call session based on the generated user-defined dictionary USD1 to generate a compressed message (S15). For example, since the first call message posted by the terminal device 100 to the proxy server 200 in the IMS network is always a register message, the terminal device 100 receives the register message which is the first call message based on the user-defined dictionary (USD1). Create a compressed message containing a user-defined dictionary (USD1).

Accordingly, the terminal device 100 may include the user definition dictionary USD1 in a compressed message compressed by using the user definition dictionary USD1 and transmit the first call message to the proxy server 200 to the outside (S20). .

The proxy server 200 receiving the compressed message transmitted from the terminal apparatus 100 determines that the dictionary type flag information of the compressed message is dictionary type flag information indicating that the user includes a user-defined dictionary. The user-defined dictionary (USD1) is extracted and stored (S25).

The proxy server 200 may decompress the compressed call message (eg, register message) included in the compressed message based on the user-defined dictionary (eg, USD1) (S30).

Accordingly, when the proxy server 200 generates a call message (eg, 200 OK message) as a response corresponding to the compressed message received from the terminal device 100, the proxy server 200 recognizes the corresponding custom dictionary (eg, USD1), Based on the recognized user-defined dictionary (for example, USD1), a call message (for example, 200 OK message) is compressed to generate a compressed message (S35), and transmitted to the terminal device 100 (S40).

When the message is received as a response corresponding to the transmitted compressed message, the terminal device 100 selects the corresponding custom dictionary (eg, USD1) corresponding to the user-defined dictionary ID information included in the received message, that is, the compressed message. Recognize and decompress the compressed call message based on the recognized user-defined dictionary (eg, USD1) (S45).

Thereafter, the terminal device 100 compresses a call message (eg, an invite message) generated to be transmitted through a call session based on the corresponding user-defined dictionary (USD1) recognized in step S45. Create a compressed message (S50).

Thus, the terminal device 100 may compress the call message after the first call message using the user-defined dictionary (USD1) and transmit the call message to the proxy server 200 to the outside (S55).

In addition, the proxy server 200 recognizes the corresponding custom dictionary (eg, USD1) corresponding to the custom dictionary ID information included in the compressed message received from the terminal device 100, and recognizes the user defined dictionary (eg Decompress the compressed call message based on USD1) (S60).

Accordingly, when the proxy server 200 generates a call message (eg, 200 OK message) as a response corresponding to the compressed message received from the terminal device 100, the proxy server 200 recognizes the corresponding custom dictionary (eg, USD1), Based on the recognized user-defined dictionary (eg USD1), the call message (eg 200 OK message) is compressed to generate a compressed message (S65), and transmitted to the terminal device 100 (S70).

When the message is received as a response corresponding to the transmitted compressed message, the terminal device 100 selects the corresponding custom dictionary (eg, USD1) corresponding to the user-defined dictionary ID information included in the received message, that is, the compressed message. Recognize and decompress the compressed call message based on the recognized user-defined dictionary (eg, USD1) (S75).

On the other hand, the terminal device 100, in the situation of transmitting and receiving the compressed message compressed using the user-defined dictionary (USD1) through the call session with the proxy server 200, the event that needs to re-create the user-defined dictionary It is always determined whether or not it occurs (S80).

When the regeneration event occurs, the terminal device 100 transmits the substitution information corresponding to at least one string included in the call message to be transmitted after the regeneration event is generated according to the pre-generation rule as in step S10 described above. Create and save a new custom dictionary (eg USD2) having (S85).

In addition, the terminal device 100 generates a compressed message including a newly created user-defined dictionary (USD2) by compressing the first call message to be transmitted to the outside after the regeneration event occurs based on the existing user-defined dictionary (USD1). (S90).

Accordingly, the terminal device 100 may transmit a compressed message (including a new user-defined dictionary (USD2)), which compresses the call message using the user-defined dictionary (USD1), to the proxy server 200 (S95). .

The proxy server 200 recognizes the corresponding custom dictionary (eg, USD1) corresponding to the previous custom dictionary ID information included in the compressed message received from the terminal device 100, and recognizes the user defined dictionary (eg: The compressed call message is decompressed based on USD1) (S100).

The proxy server 200 extracts and stores the new user-defined dictionary USD2 included in the compressed message transmitted from the terminal device 100 (S105).

Accordingly, when the proxy server 200 generates a call message (eg, 200 OK message) as a response corresponding to the compressed message received from the terminal device 100, the proxy server 200 recognizes a newly stored corresponding user-defined dictionary (eg, USD2). Then, the call message (for example, 200 OK message) is compressed based on the recognized user-defined dictionary (for example, USD2) to generate a compressed message (S110), and transmitted to the terminal device 100 (S115).

Accordingly, when the message is received as a response corresponding to the transmitted compressed message, the terminal device 100 selects the corresponding custom dictionary (eg, USD2) corresponding to the received custom dictionary ID information included in the received message, that is, the compressed message. Recognize and decompress the compressed call message based on the recognized user-defined dictionary (eg, USD2) (S120).

In this case, the terminal device 100 recognizes the user-defined dictionary ID information (for example, partial state ID of the user-defined dictionary USD2) included in the received compressed message, and thus, the proxy server 200 and the terminal device 100. Recognized that the new user-defined dictionary (USD2) is shared, the previously stored user-defined dictionary (USD1) can be deleted (S125).

Hereinafter, a message compression processing method of the terminal device 100 according to the present invention will be described with reference to FIG. 5.

In the message compression processing method of the terminal device 100 according to the present invention, a preset dictionary for generating a user-defined dictionary (USD) having substitution information corresponding to at least one string included in a call message to be transmitted through a call session is preset. Generate and store according to the rule (S200).

That is, the message compression processing method of the terminal device 100 according to the present invention, according to the compression ratio selection information input from the user, Pudlic ID information of the terminal, Pravate ID information of the terminal, IP information of the terminal, Port information of the terminal, Create a user-defined dictionary (USD) having substitution information corresponding to at least one string of service domain information, and generate the user-defined dictionary (USD) with ID information (eg, user-defined dictionary) of the user-defined dictionary (USD). (USD's partial state ID) can be stored. Hereinafter, for convenience of description, the user-defined dictionary generated this time in the message compression processing method of the terminal device 100 according to the present invention will be referred to as a user-defined dictionary (USD1).

In addition, the message compression processing method of the terminal device 100 according to the present invention generates a compressed message by compressing a call message generated to be transmitted through a call session based on the generated user-defined dictionary (USD1) (S210). .

That is, in the message compression processing method of the terminal device 100 according to the present invention, the generated call message is compressed based on the user-defined dictionary USD1, and the dictionary type flag information indicating whether the user-defined dictionary USD1 is included or not. The compressed call message is compressed by using the user-defined dictionary (USD1), the length information of the user-defined dictionary (USD1), the ID information of the user-defined dictionary (USD1), and the call message using the user-defined dictionary (USD1). Generate a compressed message having a call compression message field including at least one of the following.

More specifically, in step S210, the message compression processing method of the terminal device 100 according to the present invention compresses the first call message to be transmitted to the outside based on the user-defined dictionary (USD1), and the user-defined dictionary ( Call type including dictionary type flag information indicating that USD1) is included, user-defined dictionary (USD1), length information of user-defined dictionary (USD1), user-defined dictionary (USD1) ID information, and the compressed call message. Create a compressed message with a compressed message field.

For example, in the IMS network, since the first call message posted by the terminal device 100 to the proxy server 200 is always a register message, the message compression processing method of the terminal device 100 according to the present invention is a user-defined dictionary (USD1). Register message, which is the first call message, and dictionary type flag information (eg 0x01) indicating that the user defined dictionary (USD1) is included, user defined dictionary (USD1) used for compression, and user defined dictionary ( A compressed message having length information of USD1), user-defined dictionary ID information (for example, partial state ID of user-defined dictionary (USD1) used for compression), and a call compression message field including the compressed register message. do. In this case, the call compression message field includes dictionary type flag information (for example, 0x01) in the first byte, next length information of the user-defined dictionary (USD1), and then contains the user-defined dictionary (USD1). , And then include user defined dictionary ID information (e.g., partial state ID of user defined dictionary (USD1)), and then include the compressed register message.

Here, the message compression processing method of the terminal device 100 according to the present invention, a decompression function for decompressing the compressed message on an external server (for example, proxy server 200) that will receive the compressed message It is preferable to generate a code information field which executes in the compressed message. This code information (Bytecode) corresponds to a machine language that is executed in a decompression function (eg, UDVM) that decompresses on an external server (eg, proxy server 200) that will receive a compression message. You can get it by interpreting the defined UDVM assembly.

Accordingly, the message compression processing method of the terminal device 100 according to the present invention includes a user-defined dictionary (USD1) in a compressed message that compresses the first call message using the user-defined dictionary (USD1), and in particular, the proxy server to the outside. In operation S220, the transmission may be performed.

The message compression processing method of the terminal device 100 according to the present invention determines whether a message is received as a response corresponding to the transmitted compressed message (S230). When the message is received, the message compression processing method of the terminal device 100 according to the present invention, the decompression function (decompression performing unit 130 of FIG. Corresponding user definition dictionary corresponding to the user-defined dictionary ID information based on the dictionary type flag information and the user-defined dictionary ID information and the compressed call message included in the call compression message field of the received compressed message. Recognize (S240), and decompresses the compressed call message based on the recognized user-defined dictionary (S250).

In more detail, in the message compression processing method of the terminal device 100 according to the present invention, a compression message (eg, 200) is received from an external device in response to a compression message (for example, a compression message corresponding to a register message) transmitted to the outside. When the compressed message corresponding to the OK message is received, the virtual machine executed by the decompression unit 130 executed by the code information field included in the received compressed message, that is, the code information (Bytecode) of the code information field ( For example, the decompression unit 130 in the form of UDVM checks the dictionary type flag information of the first byte included in the call compression message field of the received compressed message. If it is determined that the dictionary type flag information indicates that the dictionary type flag information does not include a user-defined dictionary (for example, 0x02), the message compression processing method of the terminal apparatus 100 according to the present invention may include a call compression message field. By recognizing the next byte of user-defined dictionary ID information (eg partial state ID of user-defined dictionary (USD1)), the user-defined dictionary corresponding to user-defined dictionary ID information (eg, USD1) is recognized.

Accordingly, in the message compression processing method of the terminal device 100 according to the present invention, the compressed call message (eg, 200 OK message) included in the call compression message field of the compressed message based on the recognized user-defined dictionary (USD1). You can decompress it.

In addition, in the message compression processing method of the terminal device 100 according to the present invention, a user-defined dictionary ID recognized in a call compression message field of the received compressed message is a call message generated for transmission after a compressed message received from the outside. A call compression message including a dictionary type flag information indicating that the user-defined dictionary is not included, ID information of the user-defined dictionary, and the compressed call message. A compressed message having a field is generated (S260).

That is, in the message compression processing method of the terminal device 100 according to the present invention, when compressing a call message (eg, an invite message) to be transmitted after the first call message (eg, a register message) transmitted to the outside, Compression is performed based on a user defined dictionary (eg, USD1) corresponding to the user defined dictionary ID information recognized in a call compression message field of a previously received compressed message (eg, a compressed message corresponding to a 200 OK message). In addition, the message compression processing method of the terminal device 100 according to the present invention includes dictionary type flag information (eg, 0x02) indicating that the user-defined dictionary (USD1) is not included, and user-defined dictionary ID information (eg, compression). A compressed message having a partial state ID of the user-defined dictionary (USD1) used in the above and a call compressed message field including the compressed call message (eg, compressed byte message) is generated.

In this case, the call compression message field includes dictionary type flag information (eg, 0x02) in the first byte, and then includes custom dictionary ID information (eg, partial state ID of the user-defined dictionary (USD1) used for compression). And preferably include the compressed call message (eg, a compressed invite message).

Of course, the message compression processing method of the terminal device 100 according to the present invention is preferably generated by including the above-described code information field in all the compressed messages after the compressed message corresponding to the first call message.

Accordingly, in the message compression processing method of the terminal device 100 according to the present invention, the compressed message compressed by the call message using the user-defined dictionary (USD1) may be transmitted to the proxy server 200 to the outside (S220). .

Then, in the message compression processing method of the terminal device 100 according to the present invention, it is determined whether an event to regenerate the user-defined dictionary occurs (S280). Thus, as long as the regenerating event does not occur, the message compression processing method of the terminal device 100 according to the present invention repeats the above-described steps S230 to S270 by using the user-defined dictionary (USD1). The compressed compressed message may be transmitted to the outside, in particular, to the proxy server 200, and the compressed message received may be decompressed.

Here, in a situation in which the terminal device 100 transmits and receives a compressed message compressed using the user-defined dictionary (USD1) through a call session with the proxy server 200, an event that needs to be regenerated may occur. Can be. This regeneration event means that a case where the capability, service, user name, etc. of the terminal device 100 is changed occurs.

Therefore, when an event that needs to regenerate the user-defined dictionary occurs, the message compression processing method of the terminal device 100 according to the present invention, after the regeneration event occurs according to the pre-generation rule as in step S200 described above Create a new custom dictionary (e.g. USD2) with substitution information corresponding to at least one string included in the call message that you want to use, and add the custom dictionary (USD2) to the corresponding custom dictionary ID information (e.g. The partial state ID of the dictionary (USD2) is matched and stored (S290).

Accordingly, in the message compression processing method of the terminal device 100 according to the present invention, after the regeneration event occurs, the first call message to be transmitted to the outside is compressed based on a previous user definition dictionary, indicating that the user definition dictionary is included. A call including dictionary type flag information, the new user-defined dictionary, the length information of the new user-defined dictionary, the previous user-defined dictionary ID information, the new user-defined dictionary ID information, and the compressed call message. A compressed message having a compressed message field is generated (S300).

That is, the message compression processing method of the terminal device 100 according to the present invention compresses the first call message (eg, an update message) to be transmitted to the outside after the regeneration event occurs based on the previous user-defined dictionary (USD1). Dictionary type flag information (eg 0x01) indicating that a custom dictionary (USD2) is included, the newly recreated custom dictionary (USD2), the length information of the new custom dictionary (USD2), and the previous custom dictionary. ID information (e.g. partial state ID of custom dictionary (USD1) used for compression), new custom dictionary ID information (e.g. partial state ID of custom dictionary (USD2)), and the compressed call message Create a compressed message with a call compression message field that contains (eg, a compressed update message).

Accordingly, in the message compression processing method of the terminal device 100 according to the present invention, a proxy message, including a new user-defined dictionary (USD2), that compresses a call message using a user-defined dictionary (USD1) to the outside, in particular, a proxy server. In operation S310, the processor 200 may transmit the data to the computer 200.

The message compression processing method of the terminal apparatus 100 according to the present invention corresponds to a compressed message (eg, 200 OK message) from the outside in response to a compressed message (eg, a compressed message corresponding to an update message) transmitted to the outside. In step S320, the pre-type flag information of the first byte included in the call compression message field of the received compressed message is checked. If it is determined that the dictionary type flag information indicates that the dictionary type flag information does not include a user-defined dictionary (for example, 0x02), the message compression processing method of the terminal apparatus 100 according to the present invention may include a call compression message field. Recognizes the user-defined dictionary (eg USD2) corresponding to the user-defined dictionary ID information by recognizing the next byte of user-defined dictionary ID information (eg partial state ID of the user-defined dictionary (USD2)). Based on the dictionary USD2, the compressed call message (eg, 200 OK message) included in the call compression message field of the compressed message may be decompressed (S330).

In addition, in the message compression processing method of the terminal device 100 according to the present invention, the user-defined dictionary ID information (for example, the partial state ID of the user-defined dictionary (USD2)) included in the call compression message field of the received compressed message is used. By recognizing, since the proxy server 200 and the terminal device 100 recognize that the new user-defined dictionary (USD2) is shared, the previously stored user-defined dictionary (USD1) may be deleted (S340).

Then, the message compression processing method of the terminal device 100 according to the present invention, by using a newly updated user-defined dictionary (USD2) transmits the compressed message compressed the call message to the outside, in particular to the proxy server 200 In addition, the compressed message received can be decompressed.

Hereinafter, a message compression processing method of the proxy server 200 according to the present invention will be described with reference to FIG. 6.

In the message compression processing method of the proxy server 200 according to the present invention, it is determined whether a compressed message is received from the external terminal device 100 (S400), and when a compressed message is received, a predetermined code included in the received compressed message is received. According to the decompression function performed by the information field, the pre-type flag information included in the call compression message field of the received compressed message is recognized / determined to determine whether the user-defined information is included in the current compressed message (S410). ).

That is, when the compressed message is received, the message compression processing method of the proxy server 200 according to the present invention includes the decompression unit 220 executed by the code information field included in the received compressed message. The decompression unit 220 in the form of a virtual machine (eg, UDVM) executed by code information (Bytecode) checks the dictionary type flag information of the first byte included in the call compression message field of the received compressed message. It is determined whether the user defined information is included in this compressed message.

In this case, if the dictionary type flag information indicates that the dictionary type flag information includes a user-defined dictionary, the current compressed message is the first call message (eg, a register message) transmitted from the terminal apparatus 100 to the proxy server 200. If the dictionary type flag information indicates that the dictionary type flag information does not include the user-defined dictionary, the current compressed message is after the first compressed message including the user-defined dictionary (eg, USD1) of the terminal device 100. It will be a message.

Accordingly, in the message compression processing method of the proxy server 200 according to the present invention, as a result of checking the dictionary type flag information of the first byte included in the call compression message field of the received compressed message, the dictionary type flag information is applied to the user-defined dictionary. If it is determined that the dictionary type flag information (eg, 0x01) indicating that it includes, it can be determined whether both the old user-defined dictionary ID information and the new user-defined dictionary ID information in the call compression message field (S420).

As a result of the determination in step S420, if only one user-defined dictionary ID information exists, the message compression processing method of the proxy server 200 according to the present invention is based on the user-defined dictionary length information corresponding to the next byte of the call compression message field. In the call compression message field, a user-defined dictionary (eg, user-defined dictionary (USD1)) and user-defined dictionary ID information (eg, partial state ID of user-defined dictionary (USD1)) is extracted. The message compression processing method of the proxy server 200 according to the present invention matches and stores the extracted custom dictionary USD1 with user-defined dictionary ID information (for example, partial state ID of the user-defined dictionary USD1). (S430).

Then, the message compression processing method of the proxy server 200 according to the present invention, the stored user-defined dictionary (USD1), that is, the user-defined dictionary ID information of the call compression message field (for example, partial state of the user-defined dictionary (USD1)) The compressed call message (eg, register message) included in the call compression message field of the compressed message may be decompressed based on the corresponding user-defined dictionary (eg, USD1) corresponding to the ID (S440).

In the message compression processing method of the proxy server 200 according to the present invention, when a call message (eg, 200 OK message) is generated as a response corresponding to a compressed message received from the terminal device 100, the terminal device has previously been used. Recognize the corresponding custom dictionary (eg USD1) corresponding to the custom dictionary ID information recognized in the call compression message field of the compressed message received from the 100, and based on the recognized custom dictionary (eg USD1) Compress call messages (eg 200 OK messages).

In addition, the message compression processing method of the proxy server 200 according to the present invention includes dictionary type flag information (eg, 0x02) indicating that the user-defined dictionary (USD) is not included and user-defined dictionary ID information (eg, compression). A compressed message having a partial state ID of the user-defined dictionary (USD1) used for the call and a call compression message field including the compressed call message (for example, 200 OK message) is generated and transmitted to the terminal device 100 ( S450). In this case, the call compression message field includes dictionary type flag information (eg, 0x02) in the first byte, and then includes custom dictionary ID information (eg, partial state ID of the user-defined dictionary (USD1) used for compression). And preferably include the compressed call message (eg, a compressed invite message).

Here, in the message compression processing method of the proxy server 200 according to the present invention, code information for executing a decompression function for decompressing the compressed message on the external terminal device 100 that will receive the compressed message is performed. It is preferable to generate a field by including the compressed message. This code information (Bytecode) corresponds to a machine language that is executed in a decompression function (for example, UDVM) that decompresses on the terminal device 100 that will receive the compressed message, and interprets the UDVM assembly defined in RFC 4464. You can get it.

On the other hand, the message compression processing method of the proxy server 200 according to the present invention in step S410 described above, as a result of confirming the pre-type flag information of the first byte included in the call compression message field of the received compressed message, the pre-type flag information Is determined as dictionary type flag information (eg 0x02) indicating that it does not contain a user-defined dictionary, the user-defined dictionary ID information (eg partial state ID of user-defined dictionary (USD1)), which is the next byte of the call compression message field. Recognize the user-defined dictionary (eg, USD1) corresponding to the user-defined dictionary ID information (S460). Accordingly, the message compression processing method of the proxy server 200 according to the present invention, based on the recognized user-defined dictionary (USD1), the compressed call message (eg, byte message) included in the call compression message field of the compressed message It may be decompressed (S470).

In the message compression processing method of the proxy server 200 according to the present invention, when a call message (eg, 200 OK message) is generated as a response corresponding to a compressed message received from the terminal device 100, the terminal device has previously been used. Recognize the corresponding custom dictionary (eg USD1) corresponding to the custom dictionary ID information recognized in the call compression message field of the compressed message received from the 100, and based on the recognized custom dictionary (eg USD1) Compress call messages (eg 200 OK messages).

In addition, the message compression processing method of the proxy server 200 according to the present invention includes dictionary type flag information (eg, 0x02) indicating that the user-defined dictionary (USD) is not included and user-defined dictionary ID information (eg, compression). A compressed message having a partial state ID of the user-defined dictionary (USD1) used for the call and a call compression message field including the compressed call message (for example, 200 OK message) is generated and transmitted to the terminal device 100 ( S450).

On the other hand, if the determination result of step S420, both the old user-defined dictionary ID information and the new user-defined dictionary ID information, the message compression processing method of the proxy server 200 according to the present invention, for the user-defined dictionary (USD) Recognizing the update request, the user recognizes the corresponding custom dictionary (eg, USD1) corresponding to the previous custom dictionary ID information (eg, partial state ID of the custom dictionary (USD1) used for compression) (S480). The compressed call message (eg, update message) in the compressed message is decompressed based on the definition dictionary (eg, USD1) (S490).

The message compression processing method of the proxy server 200 according to the present invention includes a user-defined dictionary (eg, user-defined dictionary (USD2)) in a call compression message field based on user-defined dictionary length information of the call compression message field. Extract new custom dictionary ID information (e.g. partial state ID of custom dictionary (USD2)) and extract the extracted custom dictionary (USD2) from custom dictionary ID information (e.g. partial state ID of custom dictionary (USD2)) ) To be stored (S500).

Subsequently, the message compression processing method of the proxy server 200 according to the present invention may generate a call message (eg, 200 OK message) as a response corresponding to the received compressed message (eg, a compressed message corresponding to an update message). The partial state of the new user-defined dictionary ID information (eg, user definition dictionary (USD2)) recognized in the call compression message field of the compressed message (eg, the compressed message corresponding to the update message) received from the terminal device 100 previously. Recognize the corresponding custom dictionary (eg USD2) corresponding to the ID) and compress the call message (eg 200 OK message) based on the custom dictionary (eg USD2). In addition, the message compression processing method of the proxy server 200 according to the present invention includes dictionary type flag information (eg, 0x02) indicating that the user-defined dictionary (USD) is not included and user-defined dictionary ID information (eg, compression). Generates a compressed message having a partial state ID of the user defined dictionary (USD2) used in the call and a call compression message field including the compressed call message (for example, 200 OK message) and transmits it to the terminal device 100 ( S510).

Accordingly, the message compression processing method of the proxy server 200 according to the present invention may provide the external terminal device 100 with a compressed message compressed by using a newly updated user definition dictionary (USD2).

Here, the message compression processing method of the proxy server 200 according to the present invention, after the user-defined dictionary ID information is newly updated in the call compression message field of the compressed message received from the terminal device 100 ( If the partial state ID of USD2) is recognized, since the proxy server 200 and the terminal device 100 recognize that the new user-defined dictionary USD2 is shared, the previously stored user-defined dictionary USD1 may be deleted.

As described above, in the message compression processing method according to the present invention, an external server (eg, a proxy server) is loaded with a user-defined dictionary (USD) specialized for the terminal itself generated internally by the terminal device 100 in the first call message. (200) and the proxy server 200 receives and stores a user-defined dictionary (USD) through the first call message, the call between the terminal device 100 and the proxy server 200 to operate as SigComp End-point When exchanging messages, the call message can be compressed and decompressed using the user-defined dictionary (USD), and the user-defined dictionary (USD) of the terminal device 100 and the proxy server 200 can be updated as necessary. When the call message exchange between the terminal device 100 and the proxy server 200 operating as an end-point can improve the compression rate more effectively than the conventional method, it is possible to secure the reliability of compression and decompression.

Although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above-described embodiments, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will have the technical idea of the present invention to the extent that various modifications or changes are possible.

A user-defined dictionary (USD) specific to the terminal itself generated internally by the terminal device is provided to an external server by putting the first call message on the server, and the server receives and stores the user-defined dictionary (USD) through the first call message, thereby saving SigComp End. When a call message is exchanged between a terminal device and a server operating as a -point, the call message may be compressed and decompressed using a user-defined dictionary (USD), and a user-defined dictionary (USD) of the terminal device and the server may be updated as necessary. When applying a message compression processing system and a message compression processing method, it is possible to bring about a great improvement not only in the improvement of the compression rate of the call message exchange, but also in terms of the compression reliability and the efficiency, and furthermore, the satisfaction of the communication service. Not only are there enough market and sales possibilities for devices and servers, compressed service solutions, It may be conducted.

1 is a control block diagram of a message compression processing system according to a preferred embodiment of the present invention.

2 is a control block diagram of a terminal device according to an embodiment of the present invention.

3 is a control block diagram of a proxy server according to a preferred embodiment of the present invention.

4 is a flowchart illustrating a control flow of a message compression processing method according to a preferred embodiment of the present invention.

5 is a flowchart illustrating a control flow of a message compression processing method of a terminal device according to an exemplary embodiment of the present invention.

6 is a flowchart illustrating a control flow of a message compression processing method of a proxy server according to an exemplary embodiment of the present invention.

7 is an example of a preferred user-defined dictionary format generated by the terminal device of the present invention.

8 illustrates an example of a call message string that may be considered when generating a user-defined dictionary in the terminal device of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: communication network

100: terminal device

200: proxy server

Claims (24)

Generating a user-defined dictionary having substitution information corresponding to at least one string included in a call message to be transmitted through a call session according to a preset generation rule, compressing the call message based on the user-defined dictionary, A terminal device for transmitting a compressed call message and the user-defined dictionary; And When the compressed call message and the user-defined dictionary are received from the terminal device, the compressed call message is decompressed based on the user-defined dictionary, and a call to be returned to the terminal device in response to the call message. Message compression processing system comprising a proxy server for compressing and transmitting a message based on the user-defined dictionary. A terminal control unit generating a call message to be transmitted through a call session, transmitting a message to the outside and receiving the message from the outside; A user-defined dictionary generation unit generating a user-defined dictionary having substitution information corresponding to at least one string included in the call message according to a preset dictionary generation rule; And And a compressed message generation unit for compressing a call message to be transmitted through the call session based on the user-defined dictionary, generating a compressed message, and providing the compressed message to the terminal controller. The method of claim 2, The custom dictionary generation unit, A user-defined dictionary having permutation information corresponding to at least one string among the Pudlic ID information of the terminal, the Pravate ID information of the terminal, the IP information of the terminal, the Port information of the terminal, and the service domain information according to the compression rate selection information input from the user. And generating the user-defined dictionary and matching the user-defined dictionary with ID information and storing the user-defined dictionary ID information. The method of claim 2, The compressed message generation unit, Compressing the call message generated by the terminal control unit based on the user-defined dictionary, dictionary type flag information indicating whether the user-defined dictionary is included, the user-defined dictionary, length information of the user-defined dictionary, and And generating a compressed message having ID information of a user-defined dictionary and a call compression message field including at least one of the compressed call message and providing the compressed message to the terminal controller. The method of claim 2, When a compressed message is received from the outside in response to the transmitted compressed message, the pre-type flag information included in the call compression message field of the received compressed message is executed by a predetermined code information field included in the received compressed message. And a decompression performing unit for decompressing the compressed call message based on the user-defined dictionary corresponding to the user-defined dictionary ID information based on the user-defined dictionary ID information and the compressed call message. . The method of claim 5, The compressed message generation unit, Compressing the call message generated to be transmitted after the received compressed message based on the corresponding custom dictionary corresponding to the user-defined dictionary ID information recognized in the call compression message field of the received compressed message, wherein the user-defined dictionary And a compressed message having dictionary type flag information indicating that the message is not included, ID information of the user-defined dictionary, and a call compression message field including the compressed call message. The method according to any one of claims 2 to 6, The custom dictionary generation unit, When a predetermined user-defined dictionary regeneration event occurs, according to the dictionary generation rule to generate a new user-defined dictionary having a substitution information corresponding to at least one string included in the call message to be transmitted after the event is generated and stored in the dictionary Terminal device characterized in that the storage in the unit. The method of claim 7, wherein The compressed message generation unit, After the event occurs, the call message to be transmitted to the outside is compressed based on a previous user-defined dictionary, dictionary type flag information indicating whether or not the user-defined dictionary, the new user-defined dictionary, the new user-defined dictionary A terminal for generating a compressed message having a call compression message field including length information, the previous user-defined dictionary ID information, the new user-defined dictionary ID information, and at least one of the compressed call message. Device. The method according to any one of claims 2 to 6, The compressed message generation unit, And generating, in the compressed message, a code information field for executing a decompression function for decompressing the compressed message on an external server that will receive the compressed message. A server controller configured to establish a call session with a terminal device to provide a communication service, and to transmit and receive a message through the call session; And When the compressed message is received from the external terminal device through the server control unit, the user-defined dictionary included in the received compressed message is extracted and stored in the pre-storage unit, and the compressed call message in the compressed message is stored based on the user-defined dictionary. Proxy server comprising a decompression performing unit for decompression. 11. The method of claim 10, The decompression execution unit, When the compressed message is received from the external terminal device through the server control unit, the pre-type flag information included in the call compression message field of the received compressed message is executed by the predetermined code information field included in the received compressed message. If it is determined that the dictionary type flag information indicating that the definition dictionary, the user-defined dictionary and the user-defined dictionary ID information is extracted from the call compression message field to match the user-defined dictionary with the user-defined dictionary ID information to the dictionary Proxy server for storing in the storage unit. 11. The method of claim 10, The decompression execution unit, If it is determined that the dictionary type flag information included in the call compression message field of the received compressed message is dictionary type flag information indicating that the user dictionary does not include the user-defined dictionary, the corresponding corresponding to the user-defined dictionary ID information of the call compression message field is determined. And a user dictionary is recognized by the dictionary storage unit and decompresses the compressed call message in the compressed message based on the user-defined dictionary. 11. The method of claim 10, Compressing a call message generated by the server control unit in response to the compressed message received from an external terminal device based on the user defined dictionary corresponding to the user defined dictionary ID information recognized in the call compression message field of the received compressed message. And generating a compressed message having dictionary type flag information indicating that the user-defined dictionary is not included, ID information of the user-defined dictionary, and a call compression message field including the compressed call message to the server controller. Proxy server characterized in that it further comprises a compressed message generating unit to provide. The method according to any one of claims 10 to 13, The compressed message generation unit, And generating, in the compressed message, a code information field for executing a decompression function for decompressing the compressed message on an external terminal device that will receive the compressed message. The method according to any one of claims 10 to 13, The decompression execution unit, It is determined that the dictionary type flag information included in the call compression message field of the received compressed message is dictionary type flag information indicating that it includes a user-defined dictionary, and the previous user-defined dictionary ID information and the new user-defined dictionary are included in the call compression message field. If ID information exists, the compressed call message in the compressed message is decompressed based on the corresponding user-defined dictionary corresponding to the previous user-defined dictionary ID information, and the user-defined dictionary and the new user-defined dictionary in the call compression message field. Extracting dictionary ID information and matching the user-defined dictionary with the new user-defined dictionary ID information and stores in the dictionary storage unit. Generating, by the terminal device, a user-defined dictionary having substitution information corresponding to at least one string included in a call message to be transmitted through a call session according to a preset dictionary generation rule; The terminal device compressing the call message based on the user-defined dictionary and transmitting a compressed call message and the user-defined dictionary; If the compressed call message and the user-defined dictionary are received from the terminal device, decompressing the compressed call message based on the user-defined dictionary; And And compressing and transmitting, by the proxy server, a call message to be returned to the terminal device in response to the call message based on the user-defined dictionary. A dictionary generation step of generating a user-defined dictionary having substitution information corresponding to at least one string included in a call message to be transmitted through a call session according to a preset dictionary generation rule; A compressed message generation step of generating a compressed message by compressing the call message to be transmitted based on the user-defined dictionary; And And a transmission step of transmitting the compressed message to the outside through the call session. The method of claim 17, The compressed message generation step, Compressing a call message generated to be transmitted to the outside based on the user-defined dictionary, dictionary type flag information indicating whether the user-defined dictionary is included, the user-defined dictionary, length information of the user-defined dictionary, and And a compressed message having ID information of a user-defined dictionary and at least one of the compressed call message. The method of claim 17, When a compressed message is received from the outside in response to the compressed message transmitted through the transmission step, according to the decompression function executed by a predetermined code information field included in the received compressed message, the call of the received compressed message is received. Decompression to decompress the compressed call message based on the user-defined dictionary corresponding to the user-defined dictionary ID information based on the dictionary type flag information included in the compressed message field and the user-defined dictionary ID information and the compressed call message. Message compression processing method of a terminal device further comprising the step of performing. The method according to any one of claims 17 to 19, When a predetermined user-defined dictionary regeneration event occurs, a new dictionary further generating a new user-defined dictionary having substitution information corresponding to at least one string included in a call message to be transmitted after the event is generated according to the dictionary generation rule. Message compression processing method of the terminal device further comprising the step of generating. The method of claim 20, After the event occurs, the call message to be transmitted to the outside is compressed based on a previous user-defined dictionary, dictionary type flag information indicating whether or not the user-defined dictionary, the new user-defined dictionary, the new user-defined dictionary Generating a compressed message having a call compression message field including length information, the previous user-defined dictionary ID information, the new user-defined dictionary ID information, and at least one of the compressed call message. Message compression processing method of a terminal device further comprising. When the compressed message is received from the external terminal device, the pre-type flag information included in the call compression message field of the received compressed message is recognized according to the decompression function performed by the predetermined code information field included in the received compressed message. / Judging; If it is determined that the dictionary type flag information is dictionary type flag information indicating that the dictionary type flag information includes a user-defined dictionary, the user-defined dictionary and user-defined dictionary ID information is determined in the call compression message field. Extracting and storing the user-defined dictionary by matching the user-defined dictionary ID information and decompressing the compressed call message in the compressed message based on the stored user-defined dictionary corresponding to the user-defined dictionary ID information; And If it is determined that the dictionary type flag information is dictionary type flag information indicating that the dictionary type flag information does not include a user-defined dictionary, the pre-stored corresponding to the user-defined dictionary ID information of the call compression message field is stored. Recognizing the user-defined dictionary and decompressing the compressed call message in the compressed message based on the user-defined dictionary. The method of claim 22, Compressing a call message generated to be returned in response to the compressed message received from an external terminal device based on the corresponding custom dictionary corresponding to the user-defined dictionary ID information recognized in the call compression message field of the received compressed message; And generating a compressed message having dictionary type flag information indicating that the user-defined dictionary is not included, ID information of the user-defined dictionary, and a call compression message field including the compressed call message to the terminal device. Message compression processing method of a proxy server characterized in that it further comprises the step of. The method of claim 22 or 23, It is determined that the dictionary type flag information included in the call compression message field of the received compressed message is dictionary type flag information indicating that it includes a user-defined dictionary, and the previous user-defined dictionary ID information and the new user-defined dictionary are included in the call compression message field. If there is ID information, the compressed call message in the compressed message is decompressed based on the corresponding user-defined dictionary corresponding to the previous user-defined dictionary ID information, and the user-defined dictionary and the new user in the call compression message field. Extracting definition dictionary ID information and matching the user-defined dictionary with the new user-defined dictionary ID information and storing the message.
KR1020090102688A 2009-10-28 2009-10-28 Message compression processing system and message compression processing method KR20110045931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090102688A KR20110045931A (en) 2009-10-28 2009-10-28 Message compression processing system and message compression processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090102688A KR20110045931A (en) 2009-10-28 2009-10-28 Message compression processing system and message compression processing method

Publications (1)

Publication Number Publication Date
KR20110045931A true KR20110045931A (en) 2011-05-04

Family

ID=44240918

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090102688A KR20110045931A (en) 2009-10-28 2009-10-28 Message compression processing system and message compression processing method

Country Status (1)

Country Link
KR (1) KR20110045931A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112188554A (en) * 2019-07-03 2021-01-05 大唐移动通信设备有限公司 Information transmission method and device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112188554A (en) * 2019-07-03 2021-01-05 大唐移动通信设备有限公司 Information transmission method and device

Similar Documents

Publication Publication Date Title
CN104054068B (en) Improved bandwidth optimization for RDP
US7817630B2 (en) Method, communications node, and memory for dynamic dictionary updating and optimization for compression and decompression of messages
EP3125594A1 (en) Intelligent communication method, terminal and system
KR101072651B1 (en) Method and arrangement for state memory management
US20080037509A1 (en) Method and communications node for creation and transmission of user specific dictionary for compression and decompression of messages
KR20080014041A (en) Signalling compression/decompression
US20080120315A1 (en) Signal message decompressor
CN108696899B (en) SIP message transmitting and receiving method and transmitting and receiving device
CN111107051A (en) Message transmission method and device, computer equipment and storage medium
CN100452656C (en) Arrangement for application message decompression
CN111510476A (en) Communication method, communication apparatus, computer device, and computer-readable storage medium
US8621107B2 (en) State-mediated data signaling used for compression in telecommunication services
CN114500633A (en) Data forwarding method, related device, program product and data transmission system
CN108460044B (en) Data processing method and device
US7657656B2 (en) Signal message decompressor
KR20110045931A (en) Message compression processing system and message compression processing method
CN101491054B (en) Method and apparatus for optimization of sigcomp udvm performance
CN109766347B (en) Data updating method, device, system, computer equipment and storage medium
CN105391702A (en) Audio/video communication method, terminal, server and platform
JP2010191848A (en) Communication system, transmitting device, receiving device, and program
KR20120009587A (en) System and method for providing sip service
CN112039751A (en) Communication message sending method and device
CN114449051B (en) Data packet transmission method and communication equipment
US8792476B2 (en) Methods, apparatuses, and computer program products for processing session related protocol signaling messages
RU2390102C2 (en) Enhanced dynamic compression

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application