RU2411655C2 - Terminal, method and system to perform combined service, using version of functional capabilities of terminal - Google Patents

Abstract

FIELD: information technologies.

SUBSTANCE: terminal, method and system are proposed to perform a service with channels switching - CS-service, a service on the basis of session initiation protocol SIP or combined CSI-service. According to realisation of invention, the terminal connects controller in order to receive version of functional capabilities of terminal, at least of one target terminal, in order to compare this received version of functional capabilities of terminal with previously memory-stored version of functional capabilities of terminal of this at least one target terminal, and in order to determine on the basis of comparison result whether it is required to request data on functional capabilities of terminal at least of this target terminal. At the same time specified version of functional capabilities of terminal identifies version of functional capabilities of this at least one target terminal.

EFFECT: improved efficiency and simplified procedure of alarm on establishment of connection for service realisation.

29 cl, 8 dwg

Description

FIELD OF THE INVENTION

[1] The present invention relates to a combined service, in which two or more services are simultaneously performed, and, in particular, to a terminal, method and system for performing a combined service using terminal version functionality information.

State of the art

[2] A combined service is a service in which two or more services are simultaneously performed between the first and second users. Combined service may also mean a service intended to combine at least two or more services from among the first service based on the first network, the second service based on the second network and the third service based on the third network, and then simultaneously performing combined services among two or more users.

[3] In order to provide combined services between the first and second users, the first and second users must accordingly understand the information associated with the services supported by the other party, and then agree on the conditions for the implementation of the available services between them.

[4] Of the combined services of various types, here we will consider, for example, a combination of a circuit switched service (“CS service”) and multimedia data transmission services based on Internet protocols (“IMS service”), hereinafter this combination of services is called a combined “ CSI service. "

[5] Combined "CSI service" (also called "CSI service") means a service that combines (combines) a circuit-switched service ("CS service") and a protocol-based multimedia transmission subsystem service Internet (“IMS service”), and then the combined services are simultaneously carried out among two or more users or terminals. In the case of the combined “CSI service”, a connection for the service of the multimedia data transmission subsystem based on the Internet protocols (“IMS service”) can be added to the connection for the “CS service” already established between the first and second users, or a communication session between the first and second users already established for the "IMS service" may be added to the connection for the "CS service". A service of a multimedia data transmission subsystem based on Internet protocols (“IMS service”), which can be added to a connection for a “CS service” pre-installed between the first and second users, can contain one or more services based on the multimedia data subsystem based on Internet protocols (“IMS service”), for example, instant messaging (IM), video distribution, data delivery, etc. One example of a multimedia data transfer service based on Internet protocols (“IMS service”) (a combination of “CS service” and “IMS service”) can be a conversation on a mobile phone (“CS service”) between a user on a mobile terminal “A” and another user on mobile terminal “B”, during which a video clip or image (“IMS service”) is transferred from mobile terminal “A” to terminal “B”.

[6] FIG. 1 illustrates a network structure for providing a conventional combined service, for example, a combined “CSI service”, between the first and second terminals in accordance with a known technical solution. As shown in FIG. 1, a conventional network for providing a combined service, such as a combined “CSI service”, may include the first 31 and second 32 core switching networks “CS” (“CS service”) designed to support the service with circuit switching in the framework of the combined “CSI service” between the first terminal 10 and the second terminal 20, the first 41 and second 42 core networks of the multimedia data transmission subsystem based on Internet protocols (“IMS service”), designed to support the “IMS service” in the combined “CSI service” int the first terminal 10 and the second terminal 20, the first AS application server 43 connected to the first core network 41 of the multimedia data transmission subsystem based on the Internet protocols, designed to perform a specific communication session for the multimedia data transmission subsystem service based on the Internet protocols ( “IMS service”) within the combined “CSI service” associated with the first terminal 10, for example, a service based on the counting function, the second AS application server 44 connected to the second core network 42 subsystems for transmitting multimedia data based on Internet protocols to perform a separate communication session function for a service for subsystems for transmitting multimedia data based on Internet protocols (“IMS service”) within the combined “CSI service” (for example, services based on a counting function), the first 30 radio access network - “RAN”, designed to access the first terminal 10 to the first 31 core network “CS” and the first 41 core network of the multimedia transmission subsystem based on Internet protocols (“IMS services”) (and vice versa) e second 33 radio access network - “RAN”, designed to access the second terminal 20 to the second 32 core network for “CS” and the second 42 core network of the multimedia transmission subsystem based on Internet protocols (and vice versa).

[7] A conventional network for providing a combined “CSI service” or other similar type of service may further include a first 40 packet switched core network (PS) connected between the first 30 radio access network “RAN” and the first 41 core network of the transmission subsystem multimedia data based on Internet protocols (“IMS services”) with the aim of setting up a communication session for “IMS service” as part of the combined “CSI service”, and the second 45 core packet-switched network “PS” connected between the second 33 network radio access "RAN" and the second basic a network 42 of a multimedia data transmission subsystem based on Internet protocols (“IMS services”) for establishing a communication session for an “IMS service” as part of a combined “CSI service”.

[8] Both the first 31 and second 32 CS-switched core network may include a mobile switching center (MSC), a guest location register (VLR) and a home location register (HLR).

[9] Consider now a conventional method for providing a combined “CSI service” in a conventional network as shown in FIG.

[10] When a CS service is requested between the first and second terminals 10 and 20, information and control signals between them are exchanged through the first 31 and second 32 CS-switched core networks. In the case of a communication session for the multimedia data transmission subsystem based on Internet protocols (the “IMS service”), information and control signals are exchanged through the first 40 PS “packet-switched” core network and the first 41 multimedia data transmission subsystem core network based on the Internet protocols (IMS) and through the second 42 core network of the multimedia data transmission subsystem based on Internet protocols (IMS) and the second 45 core network with packet switching “PS”.

[11] The first terminal 10 is equipped with the function of simultaneous access to the first 31 CS-switched core network and the first 40 packet-switched core PS network, and the second terminal 20 is equipped with the function of simultaneous access to the second 32 channel-switched core network CS "and the second 45 core network with packet switching" PS ".

[12] Before initializing the combined “CSI service” provided between the first and second terminals 10 and 20, the first and second terminals 10 and 20 exchange with each other current data on the radio channel environment and information on the functionality of the terminals and, therefore, respectively receive information related to services supported by the other party.

[13] Current information on the environment (operating conditions) of the terminal’s radio channel is used as important information necessary for determining the user’s actions after establishing a CS-switched call connection. Radio channel environment data is exchanged in the CS-switched domain during connection setup for the CS-switched service. When establishing a connection for a CS-switched service, the information on the radio channel environment is flexible and may vary depending on the environment. Accordingly, the information obtained on the exchange of the environment of the radio channel is used as information that is valid only during the lifetime of the connection for the circuit-switched service “CS”. Information about the environment of the radio channel may include information related to whether the terminal can simultaneously support services with circuit switching "CS" and packet switching "PS", for example, a combined "CSI service".

[14] Terminal functionality data is information identifying terminal capabilities and is used as information to determine whether a user in communication with another party will request available services for that party. The specified data exchange on the terminal’s functionality occurs through the domain of the multimedia data transmission subsystem based on the Internet protocols (“IMS service”).

[15] FIG. 2 shows a conventional method for exchanging terminal functionality between the first and second terminals 10 and 20 in the conventional network shown in FIG. 1.

[16] As shown in FIG. 2, the first terminal 10 sends an “OPTIONS” message in accordance with the SIP session establishment protocol to the second terminal 20 through the first 41 and second 42 core networks of the protocol-based multimedia transmission subsystem Internet "IMS" to request data on the functionality of the second terminal 20 (S21). Then, the second terminal 20 stores the address information of the first terminal 10 contained in the received “OPTIONS” message (S22), and then sends an OK message 200 with confirmation to the first terminal 10 in response to the “REQUEST” message (OPTIONS) in accordance with the SIP session establishment protocol. The OK message 200 with confirmation contains the functionality of the second terminal 20 (S23).

[17] The first terminal 10, having received the OK confirmation message 200, stores the functionality of the terminal 20 contained in the OK confirmation message 200 (S24).

[18] On the other hand, in the event that the terminal 20 received the “OPTIONS” message from the first terminal 10 but does not send the “OPTIONS” (SIP OPTIONS) message to the first terminal 10 requesting information about the terminal’s functionality 10, the second terminal 20 determines that it is necessary to send a “OPTIONS” message to the first terminal 10 (S25). After receiving the OPTIONS message from the second terminal 20 requesting data on the functionality of the first terminal 10 and in response to the received OPTIONS message, the first terminal 10 stores in memory the address information of the second terminal contained in the message “ REQUEST "(OPTIONS) (S26 and S27), and sends a 200 OK message with confirmation to the second terminal 20 (828). The specified message 200 "OK" with confirmation contains data on the functionality of the first terminal 10.

[19] Then, the second terminal 20 stores in memory the functionality data of the first terminal 10 contained in the OK message 200 with an acknowledgment sent from the first terminal 10 (S29).

[20] Accordingly, the functionality data of the first terminal 10 and the functionality data of the second terminal 20 that the terminals exchanged with each other are stored in the memory of the second terminal 20 and the first terminal 10, respectively, so as to provide quick service setup and reduce the load on network during subsequent data exchange between them.

[21] According to the known method mentioned above, for a certain terminal to receive terminal functionality data from a counterparty terminal, the corresponding terminal must send an “OPTIONS” message to the counterparty terminal to request information about the counterparty terminal functionality parties and receive from him a response message containing data on the functionality of this terminal. In accordance with this method, the terminal sends a “OPTIONS” message once (for example, to establish a connection) to the counterparty terminal and stores in its memory the received data on the functionality of the counterparty terminal for subsequent use.

[22] Thus, even if the data on the functional capabilities (functionality) of the counterparty terminal has not changed, the terminal still sends an “OPTIONS” message to the counterparty terminal (for example, to establish a connection) to perform an operation receiving unchanged data on the functionality of this terminal. However, this is not necessary, because the data on the functionality of the counterparty terminal has not changed and has already been saved in the terminal from the previous message “REQUEST” (OPTIONS). In addition, such an operation can lead to an increase in network load.

[23] On the other hand, in the general case, the actual functionality data associated with the terminal can be dynamically updated. Consider, in accordance with the known technical solution, the following cases when data on functional capabilities (functionality) can be changed (updated).

[24] There are three cases where actual terminal functionality data may be changed for that terminal. Namely, the first case is possible when various devices (for example, a video camera, etc.) are dynamically connected to and disconnected from the terminal, the second case is when the terminal is registered in the multimedia data transmission subsystem service based on Internet protocols (“IMS service ”), And the third case - when the terminal updated its current functionality data by downloading a new codec using the download service.

[25] After changing the actual data on the terminal’s functionality, if at the same time the terminal’s cache is not updated due to power on or off, SIM card replacement, timeout, etc. - all such operations associated with the terminal, data on the terminal’s functionality stored in the terminal’s cache may not accurately display the actual data on the functionality (functionality) of the terminal. Then, since the counterpart terminal receives the stored terminal functionality data from the terminal cache, the actual terminal functionality data will not coincide with the terminal functionality data stored in the counter side terminal cache. That is, in connection with the dynamic replacement, the actual data on the functionality of the terminal may not be known to the other side terminal.

[26] Accordingly, later, when the counterparty terminal wishes to use the combined “CSI service” using this terminal, the counterparty terminal must confirm that the functionality of this terminal is already stored in the cache of the counterparty terminal, and then after radio communications with characteristics messages immediately send an “INVITE” message to the terminal without sending “OPTIONS” messages (that is, without executing the “OPTIONS” process) in order to receive data on functional tyah terminal. Accordingly, the counterparty terminal requests from this terminal a multipoint half-duplex communication service in the mobile radiotelephone communication network - “PoC services”. However, since the terminal’s functionality has changed (for example, this terminal is not quite ready to perform a PoC service), this terminal unregisters the PoC service, the PoC service cannot be requested, and therefore, to obtain data on the functional capabilities the counterparty terminal must re-execute the OPTIONS process. Thus, previously stored in the memory data on the functionality of the terminal in a known technical solution cannot be used.

[27] In addition, in known mobile communication systems, one subscriber can have several terminals and one open (public) user identifier can be used simultaneously in several subscriber identity modules (SIM) terminals. That is, one subscriber and other terminals share one subscriber number of the subscriber of the mobile station for international communications (MSISDN). In the case of a cache in which only one public user identifier is recorded, upon receipt of the request, the receiving terminal may not recognize which of the many counterpart terminals using the public user identifier sent the request. Accordingly, a combined service (for example, a combined “CSI service”) cannot normally be implemented with the terminal that actually sent the request.

SUMMARY OF THE INVENTION

Technical solution

[28] Thus, an object of the present invention is to provide a terminal or user equipment (UE), method and system for implementing a combined service using a version of a terminal’s functionality that can simplify a terminal’s functionality exchange and signaling procedure during connection setup for a combined service by providing each terminal with the possibility of sending from it a version of the terminal's functionality.

[29] Another objective of the present invention is to provide a user terminal or device, a method and system for providing combined services using a terminal functionality version, in which whenever terminal functionality data for each terminal is changed, each terminal maintains its version of functionality capabilities of the terminal with an individual value and sends this version of the functionality of the terminal during connection establishment for I have a combined service, thanks to which it is possible to correctly determine whether the data on the functionality of the terminal of the other party have changed and increase the efficiency of using the cache by storing the agreed information in the cache of the called terminals.

[30] Another objective of the present invention is to provide a terminal, a system and a method for providing a circuit-switched service “CS”, a service based on a SIP session establishment protocol (for example, “IMS services”, etc.) or a combined “ CSI Services ”, which eliminated the limitations and disadvantages of well-known technical solutions.

[31] To obtain these and other advantages in accordance with the purpose of the present invention, as it is implemented and described in detail here, according to one aspect of the present invention, there is provided a method for providing a combined service as part of a method for simultaneously implementing various services among two or more terminals, including yourself: exchange versions of terminal functionality when requesting a connection for a service and comparing the accepted version of the terminal functionality with the version stored in memory s capability of the terminal to selectively receive data about terminal capability procedures and procedures for connectionless services.

[32] In accordance with another aspect of the present invention, in a system for simultaneously performing various services among two or more terminals, a method of performing combined services may include the following steps: generating a version of the functionality of the terminal based on data on the functionality of the terminal and sending a version of the functionality terminal when requesting a connection for a service.

[33] In order to achieve these and other advantages in accordance with the objectives of the present invention, according to yet another aspect, in a device for performing combined service with at least one or more terminals, the terminal may comprise a storage device for storing at least a version the functionality of this terminal and data on the functionality of the terminal of the counterpart, as well as a processor for sending a version of the functionality of the terminal itself and to the counterparty terminal when connecting the service and comparing the version of the counterparty’s terminal functionality received from the counterparty’s terminal with the version of the counterparty terminal’s functionality stored in the memory in order to selectively execute the procedure for exchanging terminal functionality and establishing a connection for the service .

[34] In accordance with another aspect of the present invention, in a method for simultaneously performing the first and second services among two or more terminals, a method for implementing combined services may include the following steps: sending a connection setup request message for a first service containing a first version of functional capabilities from the sending terminal to the receiving (terminal) terminal; receiving, by the sending terminal, a connection response message containing a second version of the functionality from the receiving terminal and sending a request message to connect to the communication session for the second service from the sending terminal to the receiving terminal when it is confirmed that the received second version of the functionality is the same as that stored in memory version of the functionality of the receiving terminal.

[35] In accordance with yet another aspect, the present invention provides a terminal capable of providing a CS circuit-switched service, a SIP session establishment protocol service, and a combined CSI service, which is a combination of a CS service and services of a subsystem for transmitting multimedia data based on Internet protocols (“IMS service”), and comprising: a controller for generating a version of the terminal’s functionality based on, at a minimum, data on the terminal’s functionality from this rminala and transfer terminal capability version of the at least one of the target terminals, where this version of the terminal capability version identifies the functionality of the terminal.

[36] In accordance with another aspect, the present invention provides a terminal for providing a circuit-switched service (“CS Services”), a service based on a SIP session establishment protocol and a combined “CSI Service”, a service representing a combination of circuit-switched services (“CS-services”) and multimedia data transmission services based on Internet protocols (“IMS-service”), and comprising: a controller for transmitting a version of the terminal’s functionality to at least one of the targets terminals and receiving a version of the functionality of at least one target terminal during the establishment of a communication session for an instant messaging service (IM) or while setting up a connection for a circuit-switched service (“CS services”), in which this version is functional terminal capabilities identifies the version of the functionality of the corresponding terminal.

[37] In accordance with another aspect, the present invention provides a terminal capable of providing a circuit switched service (“CS service”), a service based on a SIP session protocol, and a combined “CSI service”, which is a combination of a service with circuit switching (“CS-services”) and services of the multimedia data transmission subsystem based on Internet protocols (“IMS-service”), and comprising: a controller for receiving a version of the functionality of at least one target terminal for comparing the received version of the terminal’s functionality with a previously saved version of the functionality of at least one of the target terminals and to determine, based on the comparison result, whether to request a version of the functionality for the terminal of at least one of the target terminals, where this version functionality of the terminal identifies a version of the functionality of at least one target terminal.

[38] In accordance with another aspect, the present invention provides a system capable of providing a circuit-switched service (“CS service”), a service based on a SIP session establishment protocol, and a combined “CSI service”, which is a combination of a service circuit-switched channels (“CS-services”) and services of a multimedia data transmission subsystem based on Internet protocols (“IMS-service”), and comprising: a first terminal and a second terminal intended for mutual exchange of functionality versions her terminal during the configuration of services, and each version of the functionality of the terminal identifies a version of the functionality of the corresponding terminal.

[39] In accordance with another aspect of the present invention, there is provided a method for providing a circuit-switched service (“CS Services”), a service based on a SIP session establishment protocol and a combined “CSI Service”, which is a combination “CS-services” and services of the multimedia data transmission subsystem based on Internet protocols (“IMS-service”), and which includes the following steps: generating by the terminal a version of the terminal’s functionality based on at least the functional data the capabilities of the specified terminal and the terminal transferring the generated version of the terminal’s functionality to at least one of the target terminals, where this version of the terminal’s functionality identifies the version of the terminal’s functionality.

[40] In accordance with another aspect of the present invention, there is provided a method for providing a circuit switched service (“CS Services”), a service based on a SIP Session Establishment Protocol and a combined “CSI Service”, which is a combination “CS-services” and services of the multimedia data transmission subsystem based on Internet protocols (“IMS-service”), and which includes the following steps: transfer by the terminal the version of the terminal’s functionality for this terminal to at least one of the target terminals during session setup for an instant messaging service (IM) or during call setup of a circuit switched service (“CS services”) and reception by a terminal of a version of functionality from at least one target terminal during setup of a session for instant messaging services (IM) or while setting up a call to a circuit-switched service (“CS-services”), where this version of the terminal’s functionality identifies the version of the functionality corresponding to terminal terminal.

[41] In accordance with another aspect, the present invention provides a method for providing a circuit-switched service (“CS Services”), a service based on a SIP Session Establishment Protocol and a combined “CSI Service”, which is a combination of “CS-services” and services of the multimedia data transmission subsystem based on Internet protocols (“IMS-service”), and which includes the following steps: receiving by the terminal a version of the functionality of at least one target terminal, comparing the terminal with a clean version of the terminal’s functionality with a previously stored version of the terminal’s functionality of at least one of the target terminals and determining by the terminal, based on the comparison result, whether to request data on the functionality of at least one of the target terminals, where this version of the functional terminal capabilities identifies a version of the functionality of at least one target terminal.

[42] In accordance with yet another aspect, the present invention provides a method for providing a circuit-switched service (“CS Services”), a service based on a SIP Session Establishment Protocol and a combined “CSI Service”, which is a combination of “CS-services” and services of the multimedia data transmission subsystem based on Internet protocols (“IMS-service”), and including: mutual exchange between the first and second terminals with the version of the functionality of the first terminal and the version of the functional ozhnostey second terminal at the time of service settings, each terminal capability version identifies the version of the functional capability of the terminal.

[43] In accordance with yet another aspect, the present invention provides a method for providing a circuit-switched service (“CS Services”), a service based on a SIP session establishment protocol and a combined “CSI Service”, which is a combination of “CS-service” and services of the multimedia data transmission subsystem based on Internet protocols (“IMS-service”), and including: storing in the first terminal during the previous combined “CSI-service” an open user identifier of the second term and, on the terminal capability data from the second terminal and the terminal capability version of the second terminal, where this version of the terminal capability for identifying the second terminal capability version of the second terminal; storing in the second terminal during the previous combined “CSI service” an open user identifier of the first terminal, terminal functionality data from the first terminal and the terminal functionality version for the first terminal, where this version of the terminal functionality from the first terminal identifies the functionality version of the first terminal; updating terminal functionality data for the first terminal if the functionality information of the first terminal is dynamically changed; generating by the first terminal a new version of the terminal functionality for the first terminal based on at least updated functionality data of the first terminal; sending an INVITE message to establish a communication session for a service of the multimedia data transmission subsystem based on Internet protocols (IMS service) from the first terminal to the second terminal, while the INVITATION message includes a new version terminal functionality for the first terminal; comparison by the second terminal of the received version of the terminal functionality x for the first terminal with a stored version of the terminal functionality for the first terminal and, based on the comparison results, the second terminal selectively executes a request procedure for terminal functionality data.

[44] In accordance with another aspect, the present invention provides a method for providing a circuit-switched service (“CS Services”), a service based on a SIP session establishment protocol and a combined “CSI Service”, which is a combination of “CS-service” and “REQUEST” (OPTIONS)) and which includes: storing in the first terminal during the previous combined “CSI-service” the public identifier of the second terminal, data on the terminal's functionality for the second terminal and rsii terminal capability for the second terminal, where this version of the terminal capability for identifying the second terminal capability version of the second terminal; storing in the second terminal during the previous combined “CSI service” an open user identifier of the first terminal, terminal functionality data for the first terminal, terminal functionality version for the first terminal, where this version of terminal functionality for the first terminal identifies the functionality version of the first terminal; updating terminal functionality data for the first terminal if the functionality information of the first terminal is dynamically changed; generating by the first terminal a new version of terminal functionality for the first terminal based on at least updated terminal functionality data for the first terminal; sending a connection establishment message for establishing a CS-switched circuit within the current combined “CSI service” from the first terminal to the second terminal; sending a connection establishment message from the second terminal to the first terminal in response to this connection establishment message, wherein the connection establishment message contains a current version of the terminal functionality for the second terminal; selectively executing, by the first terminal, a procedure for requesting data on terminal capabilities based on comparing a version of terminal capabilities for a second terminal contained in a received connection message with a version of terminal capabilities for a second terminal stored in memory; sending an INVITE message from the first terminal to the second terminal, where a new version of the terminal functionality for the first terminal is contained in the transmitted INVITE message and / or in the transmitted connection establishment message; and selectively performing, by the second terminal, a procedure for requesting data on terminal functionality depending on the result of comparing the terminal functionality version for the first terminal contained in the received connection establishment message and / or in the “INVITE” message with the memory version of the functional terminal capabilities for the first terminal.

[45] The foregoing and other objects, features, aspects and advantages of the present invention will be more apparent from the following detailed description of the present invention with reference to the accompanying drawings.

Description of drawings

[46] The accompanying drawings, included in the description for a better understanding of the invention and forming part of this description, illustrate embodiments of the present invention and together with the description serve to explain the principles of the invention.

[47] In the drawings:

[48] figure 1 shows the structure of a network designed to provide ordinary combined services between the first and second terminals;

[49] Fig. 2 is a diagram illustrating a conventional method for exchanging terminal functionality data between the first and second terminals shown in Fig. 1;

[50] FIG. 3 is a diagram illustrating a terminal equipped with a storage device for storing a version of a terminal’s functionality in accordance with current terminal functionality data, in accordance with an embodiment of the invention;

[51] Fig. 4 is a diagram illustrating various examples of a method for generating an individual version of terminal functionality corresponding to current terminal functionality data in accordance with the present invention;

[52] Fig. 5 is a diagram illustrating a method for implementing a combined service using terminal functionality versions in accordance with a first embodiment of the present invention;

[53] FIG. 6 is a diagram illustrating a method for implementing a combined service using terminal functionality versions in accordance with a second embodiment of the present invention, and

[54] FIGS. 7 and 8 are diagrams illustrating a method for implementing a combined service using terminal functionality versions in accordance with a third embodiment of the present invention.

Description of Embodiments

[55]

[56] We now turn to a detailed description of the present invention with reference to the accompanying drawings.

[57] Explanations will be provided for a terminal, method, and system for implementing a combined service using a version of the functionality of a terminal in accordance with preferred embodiments of the present invention with reference to the accompanying drawings.

[58] In this description of the present invention, the term "version of the functionality" of the terminal (or data on the functionality of the terminal) is version information identifying the version of the functionality (data on the functionality) of the terminal. For example, the version of the functionality of the terminal is an individual value that identifies the current version (set) of functionality of the terminal.

[59] The present invention uses at least current terminal functionality data to generate an individual version of terminal functionality. After establishing a connection for the combined service between at least two terminals, these terminals can send their version of functionality to other terminals using a signaling message based on the SIP session establishment protocol, or send versions of their functionality to other terminals when sending current data on the characteristics of the environment of the radio channel in the process of establishing a connection.

[60] Accordingly, the first terminal compares a previously stored version of the functionality of the second terminal with the currently accepted version of the functionality of the second terminal to determine if the terminal functionality data for the second terminal is updated, and depending on this selectively performs the procedure exchange data on the functionality of the terminal and the procedure for establishing a connection for the service. For example, if a comparison of the functionality versions shows that the terminal functionality data for the second terminal has changed, the first terminal performs a procedure for requesting terminal functionality / exchanging terminal functionality data in order to obtain updated terminal functionality data from the second terminal for the second terminal. As a result, the first terminal requests terminal functionality data for the second terminal only when the first terminal determines that the functionality of the second terminal has changed or updated.

[61] Consider now the functionality data of each terminal in accordance with the present invention. Data on terminal functionality (i.e., a set of functionality) may contain at least one of the following elements:

[62]

- Screen functionality: colors, resolution, sizes, etc.

- Storage / storage capacity (for downloading videos, music, email attachments, etc.)

- Availability of the function of streaming / uploading videos and photos

- Codec types (EFR. AMR, MPEG4, H.264, MPS, etc.)

- Device software and firmware, release, version

- Memory capacity of the "Calendar" section

- Memory capacity of the "Contacts" section

- Memory capacity of the "Notes" section

- The operating system of devices (terminals)

- Type of browser (WAP 1.2 / 2.0, NTME, etc.)

- Classification index “ME × E” (runtime environment for a mobile station)

- Functionality of the universal module

USIM Subscriber Identity (release / version)

- Data Rate Functionality

- SIP call control protocol

- Number of simultaneously supported PDP contexts (packet data protocols)

- The number of supported "APN" (access point numbers)

[63] In the present invention, said terminal functionality data for a terminal, alone or with some other data, is used to generate an individual version of the terminal functionality. For example, to generate a version of a terminal’s functionality, a terminal can only use its functionality information. Alternatively, to generate an individual version of the functionality of the terminal, the terminal may use its terminal functionality data, an individual user identifier “ID” associated with the terminal, and an open user identifier associated with the terminal. Therefore, even if one user operates several terminals and these terminals use the same open user identifier, it is possible to correctly distinguish the functionality data of each terminal with the same open user identifier due to the corresponding version of the functionality of each terminal. In another embodiment, to generate an individual version of the functionality of the terminal, the terminal can use the functionality data of this terminal and the public user identifier “ID” associated with the terminal.

[64] In accordance with the present invention, in order to generate an individual version of the terminal’s functionality based on at least the terminal’s functionality, the terminal may use a hash function or may use other methods.

[65] In addition, the version of the terminal’s functionality can be represented by an individual value in a format of one byte (or with a different amount of data) in accordance with data on the terminal’s functionality (ie, a set of functionality). If the value of the terminal functionality version takes up one byte, then 256 different data on the terminal functionality can be presented. The number of presented versions of terminal functionality can be increased or decreased in accordance with the features of the application program.

[66] Individual version values of the functionality of the terminal may be indicated in bit or bit form. The individual value of the version of the functionality of the terminal can be represented in the form of “UCV-XX” (version of the functionality of the user / terminal “UE” - XX). Here, the expression 'XX' may be a 2-digit hexadecimal number, as shown in Table 1. The expression 'XX' may have values that fall in the range of hexadecimal values from “00” to “FF”. A version of the terminal functionality presented in the form of “UCV-XX” can be generated by the CSI user agent (“CUV agent”) based on the terminal functionality data. The hexadecimal number 'XX' is encoded in the terminal functionality version data element (for example, the user “UE”).

[67]

[Table 1] 8 7 6 5 four 3 2 one Octet 1 The identifier of the information element "IEI" version of the functionality of the "UE" Two-bit version of the UE functionality Single-bit version of UE functionality Octet 2

[68] Each terminal "UE" stores its own version of the functionality of the terminal in accordance with at least the data on the functionality of the terminal in a storage device connected to the specified terminal, and also stores the version (s) of the functionality of the terminal of other terminals. Figure 3 presents the terminal 100 or 200, equipped with such a storage device so that it could store the version (s) of the functionality of the terminal in accordance with the present invention. The storage device may be a memory, or cache 160, or USIM universal subscriber identity module 170. Both the internal and / or external / removable storage devices of the terminal can store the current version of the functionality of this terminal, as well as the version (version) of the functionality of other terminals. Each terminal in known technical solutions also contains a controller / processor 150 and other components, for example, a user input device, a display device, an audio device, a network interface, etc.

[69] On the other hand, the functionality data of each terminal can be updated dynamically. Data on the terminal’s functionality can be updated, for example, when several devices (such as a camera, etc.) are dynamically connected to or disconnected from the terminal when registering the terminal for the service of the multimedia data transmission subsystem based on Internet protocols (“IMS- service ”) or canceling its registration when the terminal uses the download service to download a new codec, etc. The present invention actually covers any situation in which a terminal changes / updates the functionality (functionality data) of a terminal. In all such situations, the terminal generates an individual version of the terminal’s functionality every time, for this terminal, data on the terminal’s functionality is updated (changed), and the created new version of the terminal’s functionality is stored in the terminal’s memory as the current version of the terminal’s functionality for this terminal .

[70] Fig. 4 shows various examples of a method for generating an individual version of a terminal functionality based on at least current terminal functionality data in accordance with the present invention. This method can be performed by terminals, for example, terminals 100, 200 shown in FIGS. 3 and 5-7.

[71] As shown in FIG. 4, a well-known hash function can be used to generate an individual version of the functionality for each terminal. When using a hash function to generate an individual version of the terminal's functionality, the terminal enters into the hash function only updated data on the terminal's functionality. Alternatively, to generate an individual version of the terminal's functionality, the terminal may enter a personal user identifier and / or public user identifier in a hash function along with updated data on the terminal's functionality. For example, an individual version of the terminal’s functionality can be generated using a hash function or encryption function and the following data (a) or (b): (a) terminal functionality data, an open user identifier associated with the terminal, and a personal user identifier associated with the terminal; or (b) terminal functionality data and an open user identifier associated with the terminal.

[72] In the first example in Fig. 4, if the current terminal functionality data (for example, the functionality of the first terminal) is a set of characteristics including the following parameters: screen functionality - 256 colors and resolution 640 × 486, memory 256 MB, improved full-speed EFR (modem) mode, adaptive multi-speed AMR mode, MPEG4 standard, codec type including H.264, and browser type WAP 1.2, then the terminal for generating the first version of functionality terminal, having an individual value, enters into the hash function data on the functionality of the terminal. As shown in FIG. 4, the first version of the functionality of the terminal may have, for example, the value “01001000”.

[73] In the second example of FIG. 4, when the camera is connected to the terminal and, therefore, the terminal’s functionality is changed, to generate a second version of the terminal’s functionality, which has an individual value, the terminal enters the terminal’s current functionality into the hash function (for example, second terminal functionality data) to which camera functions are added. In this case, the created second version of the terminal functionality may have, for example, the value “10111001”.

[74] In the third example shown in FIG. 4, when the terminal browser type is updated to WAP 2.0, in order to generate a third version of the terminal’s functional capabilities having an individual value, the terminal uses its current terminal functionality data (i.e. e. third data on the functionality of the terminal) in which the browser type is updated. For example, the third version of the terminal functionality may have the value “01011000”.

[75] As mentioned above, whenever the terminal functionality data is dynamically changed, the terminal changes the version of the terminal functionality so as to obtain a new individual value based on at least the changed terminal functionality data. Thus, it is easy to confirm whether or not the terminal functionality data for that terminal has changed, based on whether or not the functionality version has changed.

[76] In the present invention, after exchanging terminal functionality for this terminal using SIP session signaling protocol messages (eg, OPTIONS, INVITE, etc.) or after exchanging current data on the operational characteristics of the radio channel (for example, using a message to establish a connection), each terminal sends its version of the functionality to another (other) terminal (s). The versions of the functionalities of the other (other) terminal (s) obtained during the exchange are stored in each terminal together with the data on the terminal's functionality obtained during the exchange and an open user identifier associated with the corresponding terminal.

[77] Further, after establishing a connection for a service for a combined service, including, but not limited to, the combined CSI service, if the value of the functionality version of terminal “B” stored in terminal “A” differs from the value of the version of functionality terminal "B", currently accepted by the terminal "A", in accordance with the result of their comparison, the terminal "A" can notify the terminal "B" that the stored version of the terminal's functionality for terminal "B" needs to be updated It also requests current data on the functionality of terminal “B”. The value of the terminal functionality version for terminal “B” stored in terminal “A” may differ from the value of the terminal functionality version for terminal “B” currently received by terminal “A” in cases where a storage device (for example, subscriber identifier module “SIM” or universal subscriber identifier module “USIM”) of terminal “A” has been replaced, data on terminal functionality for terminal “B” has dynamically changed, etc.

[78] On the other hand, as a method of maintaining the stability of a terminal memory with respect to storing terminal functionality data, the present invention proposes a method in which, when dynamically changing terminal functionality data, the changed content is sent to another terminal open identifier stored in the terminal memory using a method such as “LBS” (subscriber location-based services that).

[79] FIG. 5 shows a method for implementing a combined service using a version of the functionality of a terminal in accordance with a first embodiment of the present invention. The method presented in FIG. 5 includes a method of generating an individual version of the functionality of the terminal, as described above. The method presented in figure 5, can be implemented in the system and device shown in figures 1 and 3, or in other similar devices and systems. The methods performed by the terminal 100 or 200 may be performed and / or controlled by the controller 150 of the terminal 100 or 200.

[80] As shown in FIG. 5, for providing a combined service including at least a first service and a second service, a system for implementing a combined service using a version of the terminal functionality may include first 100 and second 200 terminals that exchange with each other their versions of the terminal’s functionality when connecting for the first service. Each terminal compares the version of the terminal’s functionality received from the other terminal with the stored version of the terminal’s functionality for this other terminal, and if the two versions of the terminal’s functionality do not match, then it receives the terminal’s updated data on the terminal’s functionality for reception.

[81] The system may further comprise a first service network intended to provide a first service to the first 100 and second 200 terminals, and a second service network intended to provide a second service to the first 100 and second 200 terminals. If the first service is a service based on a SIP session establishment protocol, for example, a service of a multimedia data subsystem based on Internet protocols (an "IMS service"), the first service network may comprise a first core network 410 of a protocol based multimedia data subsystem service Internet (“IMS-service”), intended to provide “IMS-service” to the first terminal 100, and the second core network 420 of the multimedia data transmission subsystem based on Internet protocols (“IMS-service”), to provide an “IMS service” to the second terminal 200. If the second service is a circuit switched service (“CS service”), the second service network may comprise a first core network for a circuit switched service (“CS service”) (for example , position 31 in FIG. 1), designed to provide a “CS service” to the first terminal 100, and a second core network (for example, position 32 in FIG. 1), designed to deliver a “CS service” to the second terminal 200. The system may also contain other components, such as the first and second core switching networks packages it «PS», the first and second radio access network «RAN», the first and second «AS» application server, etc. All system components are connected and / or configured to work in the corresponding mode.

[82] A storage device 160, 170 of each terminal 100, 200 may store a version of the functionality and data on the functionality of its own terminal, as well as a version of the functionality of the terminal and data on the functionality of the terminal for the other (s) terminal (s) (for example, received during the previous connection for services with other terminal (s)), as well as own public user identifier and public user identifiers of other parties. The controller / processor 150 of each terminal 100, 200 sends a version of the functionality of this terminal to the other side / terminal when establishing a connection for the first service, compares the version of the terminal functionality of the other side received from the other side with the version of the terminal functionality of the other side stored in the memory device, and based on the results of comparison selectively performs the procedure for exchanging terminal functionality, as well as the procedure for setting up Inaniya for the service.

[83] Consider now with reference to FIG. 5, a method for implementing a combined service using a version of a terminal functionality in accordance with a first embodiment of the present invention. Figure 5 shows an example of a method in which, when establishing a connection for a combined service, for example, a combined "CSI service", a communication session is first established for the service of the multimedia transmission subsystem based on Internet protocols ("IMS service"), and then it is established connection for calling a circuit switched service (“CS service”). This method is also applicable when setting up a communication session only for the “IMS service”, i.e. after setting up a communication session for the “IMS service”, no connection for the “CS service” is established.

[84] As shown in FIG. 5, the first terminal 100 and the second terminal 200 exchange with each other their terminal functionality data using a combined service (for example, a current connection for a combined “CSI service”) and then, respectively, store the specified data on the functionality of the terminal in memory, for example, in the cache memory of the corresponding terminal. The first and second terminals 100 and 200, respectively, store, for example, in their memory blocks, at least, an open user identifier of the other side (associated with another terminal), a version of the terminal’s functionality for another terminal, and terminal functionality data for another terminal (S51 ) The version of the functionality of each terminal is calculated, as indicated above, for example, based on at least data on the functionality of this terminal. Data on terminal functionality may contain, for example, data on a supported codec, file format, etc. In addition, both the first terminal 100 and the second terminal 200 also store their own open user identifier, their version (value) of the terminal’s functionality, its data on the terminal’s functionality, etc. For example, the current versions of the functionality of the first and second terminal may, in step S51, have values of V.0.12 and V.3.3, respectively.

[85] Then, the first and second terminals 100 and 200 exchange data and exchange voice messages using the current communication session / connection for the combined “CSI service” and then terminate the communication session / disconnect between the first and second terminals 100 and 200 ( S52). Here, the first terminal 100 can store the public user ID of the second terminal 200, the version of the terminal’s functionality for the second terminal 200, and the terminal’s functionality for the second terminal 200 — all of them were obtained during data exchange during the setup procedure of the combined “CSI service”, and also stores its version of terminal functionality. The second terminal 200 may store the same information regarding terminal functionality data for the first terminal 100 using the same method. The information stored in the first terminal 100 is used when the first terminal 100 later awaits the implementation of another combined "CSI service" with the second terminal 200.

[86] Subsequently, terminal functionality data for each terminal, for example terminal functionality data for the first terminal 100, may change for various reasons. For example, the terminal functionality data for the first terminal 100 may change in the following cases: when “IMS services” were registered (for example, “PoC service” - multipoint half-duplex communication in a mobile radiotelephone network, instant messaging “IM”, broadcasting, etc.) or when their registration is canceled, multimedia devices (for example, a camera, etc.) were connected or disconnected from the first terminal 100, the download service was used to change the new codec or format supported files or the version of the multimedia messaging service "MMS" has been updated (S53).

[87] When changing terminal functionality data for the first terminal 100, the first terminal 100 changes its version of the terminal functionality, for example, based on at least updated terminal functionality data for the first terminal 100 (S54). As a result, the current version of the terminal functionality for the first terminal 100 will be different from the version of the terminal functionality for the first terminal 100 stored in the second terminal 200. For example, since the version of the terminal functionality for the first terminal 100 has changed from “V.0.12” to “V .1.12 "in connection with a change in its data on the functionality of the terminal, the current version of the functionality of the terminal for the first terminal 100 is now different from the version of the functionality stey terminal to the first terminal 100 (e.g., «V.0.12»), currently stored in the second terminal 200 (S55).

[88] Further, when the first terminal 100 is about to implement a combined “CSI service” with the second terminal 200, the first terminal 100 attempts to establish a connection to conduct a communication session for the “IMS service”. Here, the first terminal 100 confirms that it has already saved the information associated with the second terminal 200, and immediately performs the establishment of a communication session for the “IMS service” by sending an “INVITE” message without exchanging data on the terminal's functionality. The “INVITE” message contains the current version of the terminal functionality (for example, “V.1.12”) for the first terminal 100. The first terminal 100 may generate an “INVITE” message with reference to the data stored in it about the second terminal 200 and send the generated “INVITE” message to the second terminal 200. Data on the second terminal 200 stored in the first terminal 100 may contain at least an open user identifier and terminal functionality data for the second terminal 200.

[89] An INVITE message is sent from the first terminal 100 to the second terminal 200 through the first core network 410 of the multimedia transmission service subsystem based on the Internet protocols and the second core network 420 of the multimedia data transmission subsystem service based on the Internet protocols (S56) .

[90] The second terminal 200 receives a version of the functionality of the terminal for the first terminal 100 contained in the INVITE message. The second terminal 200 compares the received version of the terminal functionality (eg, V.1.12) of the first terminal 100 with the version of the terminal functionality (eg, V.0.12) for the first terminal 100 previously stored in the second terminal 200. The second terminal 200 in accordance with the results the comparison selects and performs either a procedure for exchanging data on the functionality of the terminal, or a procedure for sending a response with a connection request in order to conduct a communication session for an “IMS service” (S57).

[91] For example, if the received version of the terminal functionality for the first terminal 100 matches the previously saved version of the terminal functionality for the first terminal 100, then the second terminal 200 determines that the current terminal functionality data for the first terminal 100 has not changed since the previous combined “CSI services” and in response to the “INVITATION” message (INVITE) sends a 200 OK message with confirmation. However, if the received version of the terminal functionality for the first terminal 100 is different from the previously saved version of the terminal functionality for the first terminal 100, then the second terminal 200 determines that the current terminal functionality data for the first terminal 100 after providing the previous combined “CSI service” changed, and performs the procedure for exchanging terminal functionality data to obtain current terminal functionality data for terminal 100. That is, the second terminal 200 sends a request message - “OPTIONS” (service message based on the SIP session establishment protocol) to the first terminal 100 to request changed terminal functionality data for the first terminal 100. Message with a request - “REQUEST” (OPTIONS) may contain the current version of the terminal’s functionality for the second terminal 200. A message with a request - “REQUEST” (OPTIONS) is sent from the second terminal 200 to the first terminal 100 through the first 410 and second 420 core networks Luga Multimedia Subsystem based on the Internet Protocol ( «IMS-service») (S58).

[92] The first terminal 100, having received the OPTIONS request message, sends its terminal functionality data to the second terminal 200. Then, the second terminal 200 stores in memory the new changed terminal functionality data for the first terminal 100. Accordingly , and the first and second terminals 100 and 200 receive and store current data on the functionality of the terminal and the current version of the functionality of the terminal for another terminal.

[93] After that, to provide a combined “CSI service”, if necessary, the first terminal 100 and the second terminal 200 can perform the connection setup procedure for the “CS service” through the first and second core networks for the circuit-switched service “CS service” ". The connection setup procedure for the circuit-switched service “CS-services” within the combined “CSI-service” is known.

[94] Accordingly, each time the terminal functionality data for the terminal is changed, the version of the terminal functionality can be maintained with an individual value and then sent to one or more parties, whereby it can be determined whether the terminal functionality data has changed for each terminal , and then data on the terminal’s functionality may be requested if, based on this definition, the terminal’s functionality was Edit, thereby providing stability of the memory usage of each terminal. Thus, the present invention provides an effective and efficient system and method for exchanging terminal functionality data for a combined service, such as a combined “CSI service”.

[95] FIG. 6 illustrates a method for implementing a combined service using a version of the functionality of a terminal in accordance with a second embodiment of the present invention. The method shown in FIG. 6 includes a method for generating an individual version of the functionality of the terminal, as described above. The method presented in Fig.6, can be implemented in the system and device shown in the drawings of Fig.1 and 3, or in other similar devices and systems. The methods performed by the terminal 100 or 200 may be performed and / or controlled by the controller 150 of the terminal 100 or 200.

[96] As shown in FIG. 6, a system for implementing combined services using a version of the functionality of a terminal in accordance with the present invention may comprise first and second terminals 100 and 200, a first 410 and a second 420 multimedia transmission service core network data on the basis of Internet protocols (“IMS-service”), as well as the first 310 and second 320 core networks with circuit switching “CS-services”. Figure 6 shows a method of implementing a combined service, in which the combined service is a combined "CSI service", and first establishes a connection for the circuit-switched service - "CS services", and then establishes a communication session for the "IMS service".

[97] Step S61 is performed using the same method as that used in steps S51 and S52 of FIG. 5. Upon completion of the provision of the combined “CSI service” between the first terminal 100 and the second terminal 200, an open user identifier, terminal functionality data and a version of the terminal functionality of each terminal are stored in the corresponding counterpart of the counterpart: the first (100) or second (200) ( S61). That is, step S61 is the same as steps S51 and S52 shown in FIG. 5.

[98] For example, it is assumed that the following information is stored in the first terminal 100:

[99] For the second terminal; bobs@lge.com; text ™ audio-video-mpeg-typeofcodec-etc; V.3.3

[100] where the value of the public user ID of the second terminal 200, for example, the unified resource identifier "URI", is equal to bobs@lge.com, the data on the supported terminal functionality for the second terminal 200 contains text, audio, video, the mpeg standard and others codecs, and the value of the current version of the terminal functionality for the second terminal 200 is V.3.3.

[101] Further, in the first terminal 100 and in the second terminal 200, the data on the functional capabilities of these terminals can be dynamically changed, for example, in cases of registration and deregistration of a service of a multimedia data transmission subsystem based on Internet protocols (“IMS service”) connecting and disconnecting multimedia devices, etc. As an example, the case when the functionality data of the terminal of the first terminal 100 has been changed is considered below.

[102] If the data on the functionality of the terminal of the first terminal 100 has changed, then the first terminal 100 uses at least the changed data on the functionality of the terminal (with additional data, such as an open identifier) to generate a new version of the functionality of the terminal having an individual value user and / or personal user identifier, or without them) (S62 and S63). For example, the value of the previous version of the terminal functionality for the first terminal 100 is V.0.12, and the value of the newly created (changed) version of the terminal functionality is V.1.12.

[103] Further, when the first terminal 100 wants to firstly establish a circuit switched CS connection with the second terminal 200 as part of the combined CSI service, the first terminal 100 sends a circuit switched connection message for the CS services "(for example, the message" SETUP ") to the second terminal 200 (S64). The connection setup message for the circuit-switched service (“CS Services”) may contain at least a version of the terminal functionality for the first terminal 100. For example, the current version (value) of the terminal functionality for the first terminal 100 having a value of V.1.12. A connection setup message is sent from the first terminal 100 to the second terminal 200 through the first and second core networks with circuit switching "CS" - respectively 310 and 320.

[104] Then, the second terminal 200, in response to the connection establishment message, sends a “CONNECT” connection message to the first terminal 100 (S65). The CONNECT connection message may contain at least a version of the terminal functionality (eg, V.3.3) for the second terminal 200. The CONNECT connection message can be sent from the second terminal 200 to the first terminal 100 through the first 310 and second 320 CS-switched core network.

[105] After completing the setup of the circuit switched connection “CS” in order to configure the communication session for the multimedia data transmission subsystem based on Internet protocols (“IMS service”) for the combined “CSI service”, the first terminal 100 compares the previously saved version of the functional terminal capabilities (eg, V.3.3) for the second terminal 200 with a version of the terminal functionality (eg, V.3.3) for the second terminal 200, adopted when establishing a circuit switched connection “CS” (S66). In accordance with the comparison results, the first terminal 100 selects and performs either a procedure for exchanging data on the terminal’s functionality or immediately setting up a communication session for an “IMS service”.

[106] For example, in step S66, if the previously stored version of the terminal functionality for the second terminal 200 is different from the received version of the terminal functionality for the second terminal 200, the first terminal 100 determines that the terminal functionality data for the second terminal 200 s Since the implementation of the previous combined “CSI Services” have changed. Therefore, the first terminal 100 performs a procedure for exchanging data on the functionality of the terminal and / or transmitting it, in which the first terminal 100 sends an OPTIONS message in accordance with the SIP session establishment protocol (SIP message) to the second terminal 200 in order to request and receive from the second terminal 200 the changed data on the functional capabilities of the terminal of the second terminal 200 (this procedure is not reflected in FIG. 6, but it is similar to the “OPTIONS” procedure reflected in FIG. 2).

[107] However, in step S66, if the previously stored version of the functionality of the terminal (eg, V.3.3) of the second terminal 200 matches the received version of the functionality of the terminal (eg, V.3.3) of the second terminal 200 (which is the case in this example), the first terminal 100 determines that the current terminal functionality data for the second terminal 200 is the same as the terminal functionality data for the second terminal 200 at the time the previous combined “CSI service” was provided. That is, there is no change in terminal functionality data for the second terminal 200. Therefore, the first terminal 100 does not send an OPTIONS message requesting terminal functionality information to the second terminal 200, but instead sends the message “ INVITATION ”(INVITE) with a request to establish a communication session for“ IMS services ”(S67). Here, the INVITE message may contain at least a version of the terminal functionality for the first terminal 100. In this case, the value of the terminal functionality version for the first terminal 100, for example, is V.1.12. The INVITATION message is sent to the second terminal 200 through the first 410 and second 420 core networks of the multimedia data transmission subsystem based on Internet protocols (“IMS service”).

[108] Then, the second terminal 200 compares the version of the terminal functionality for the first terminal 100 received using the “INVITE” message with the version of the terminal functionality for the first terminal 100 previously stored in its memory (S68). In accordance with the results of the comparison, the second terminal 200 selects and performs either a procedure for exchanging data on the terminal's functionality or a connection setup procedure for the purpose of conducting a communication session for an “IMS service”. For example, the second terminal 200 transmits to the terminal 100 either a request for terminal functionality data for the first terminal 100, or a response to a connection request to conduct a communication session for an “IMS service”.

[109] That is, in step S68, if the received version of the terminal functionality of the first terminal 100 matches the previously stored version of the terminal functionality of the first terminal 100, then the second terminal 200 determines that the current terminal functionality data for the first terminal 100 is the same as the functional the capabilities of the terminal from the previous combined “CSI service” and in response to the “INVITE” message (INVITE) sends a 200 “OK” message with confirmation (not reflected in FIG. 6, but similarly so far annomu in Figure 2).

[110] However, in step S68, if the received version of the functionality of the terminal of the first terminal 100 is different from the version of the functionality of the terminal of the first terminal 100 stored in the memory, for example, if the value of the received version of the functionality of the terminal is V.1.12 and the value of the stored version functionality of the terminal is V.0.12, then the second terminal 200 determines that the current data on the functionality of the terminal for the first terminal 100 is different from the data on the functional terminal capabilities for the previous combined “CSI service”. In other words, the second terminal 200 determines that the terminal functionality data for the first terminal 100 has changed. The second terminal 200, respectively, sends to the first terminal 100 the message “REQUEST” (OPTIONS) with a request for changed data on the functionality of the terminal for the first terminal 100 (S69). The request message “OPTIONS” may contain a version of the functionality of the terminal of the second terminal 200.

[111] The first terminal 100, having received the message requesting an “OPTIONS” (OPTIONS), sends its changed data about the functionality of the terminal to the second terminal 200 using the response message “REQUEST” (OPTIONS), so that the second terminal 200 can receive the current data about the functionality of the terminal of the first terminal 100 for the combined "CSI services".

[112] Accordingly, the second terminal 200 stores in its memory the changed terminal functionality data for the first terminal 100, as well as the functionality version of the first terminal 100 corresponding to the changed terminal functionality data for the first terminal 100. Therefore, the solution according to the present invention maintains a correspondence between the current terminal functionality data of the first terminal 100 and the terminal functionality data for the first terminal 100 stored in the second terminal 200.

[113] After this, using the known procedure for setting up a communication session for an “IMS service”, a communication session for an “IMS service” is established between the first and second terminals 100 and 200 and the actual data (multimedia information) is exchanged between them (S70).

[114] In step S64, if the connection establishment message for the circuit-switched service “CS” transmitted to the second terminal 200 contains a functional version of the terminal of the first terminal 100, then the second terminal 200 can compare the received functional version with the stored functional version capabilities of the first terminal 100 and can perform a procedure for exchanging data on functional capabilities (if the versions differ) or directly the procedure for setting up a communication session for an “IMS service” (if versions with fall).

[115] Accordingly, both the first terminal 100 and the second terminal 200 use individual versions of the terminal functionality belonging to another terminal, based on at least current terminal functionality data of another terminal. This prevents a possible discrepancy between the received terminal functionality data and previously stored terminal functionality data, and also simplifies the signaling procedure for establishing a connection for the combined service. In addition, since the procedure for exchanging / transmitting data on the terminal’s functionality is performed only when the received value of the terminal’s functionality version differs from the terminal’s functionality version previously stored in memory, the network load is reduced and the combined CSI service procedures are performed efficiently and effectively.

[116] Further, a single user typically operates multiple terminals, and these terminals typically use the same public user ID. Here, in a conventional system for providing combined services, each terminal stores terminal functionality data based on an open user identifier (for example, a unified resource identifier “URI”), and accordingly, it may be difficult to distinguish between the terminal functionality data among multiple terminals using the same public user identifier (for example, a uniform resource identifier "URI"), which leads to some oh incompatibility in data terminal capability. However, according to the present invention, an individual version of the terminal functionality may be generated based on at least the terminal’s open user identifier, the terminal’s personal user identifier and terminal functionality data for that terminal, or based on at least the terminal’s open user identifier and functional data terminal capabilities for that terminal, for example, using a hash function or other encryption or encryption method. Accordingly, in each case, when one user operates several terminals and the same unified resource identifier “URI” is used in these terminals, it is possible to generate different versions of the terminal’s functionality with individual values based on the data on the functionality of each terminal.

[117] Thus, in accordance with the present invention, each terminal has an individual version of the terminal’s functionality based on current terminal functionality data for that terminal, so that many terminals and corresponding functionality data of each of the many terminals can be distinguished from each other .

[118] Additionally, in the known technical solutions, since the sending side confirms the received side data stored in the memory, it determines whether the terminal functionality data has changed (updated), and then performs the terminal functionality data exchange procedure when the user is oncoming (sending) parties previously set up call forwarding to a specific terminal from a variety of terminals owned by the user, there is no need to perform the exchange procedure Data on terminal functionality.

[119] However, according to the present invention, if a change in the version of the terminal’s functionality occurs during a connection or session setup, a particular party (eg, sending or receiving) that received the version of the terminal’s functionality on the other side compares the received version of the terminal’s functionality with earlier a stored version of the terminal functionality to determine if the terminal functionality data has changed. Accordingly, the disadvantage of the known technical solution that can occur when an additional service is used, such as a circuit-switched call, can be eliminated.

[120] Figures 7 and 8 illustrate a method for implementing a combined service using a version of a terminal functionality in accordance with a third embodiment of the present invention. As shown in FIGS. 7 and 8, a third embodiment of the present invention solves problems arising in a situation where a combined service is provided at least between a first user and a second user, and the second user has multiple terminals using the same public identifier user associated with the second user. The method presented in Figs. 7 and 8 includes a method for generating an individual version of the terminal functionality described above. The method presented in Figs. 7 and 8 can be implemented in the system and device shown in Figs. 1 and 3, or in other similar devices and systems. The methods performed by the terminal 100 or 200 may be performed and / or controlled by the controller 150 of the terminal 100 or 200.

[121] As shown in FIGS. 7 and 8, in a system for implementing a combined service, in accordance with the present invention, the first user operates the first terminal 100, and the second user operates several terminals 200, designated as an example by the terminal “2-1 "210 and the terminal" 2-2 "220. In the terminals" 2-1 "210 and" 2-2 "220 the same user identifier is used, for example, a unified resource identifier" URI ". In the method for implementing the combined service illustrated in FIGS. 7 and 8, if the combined service is a combined “CSI service”, then a connection is first established for a circuit-switched service (“CS services”) and then a communication session for “IMS- services. " In addition, in the method shown in FIGS. 7 and 8, the second user pre-sets the function of forwarding incoming calls to forward incoming calls to terminal “2-2” 220. In this example, the data on the functional capabilities of the terminal of each of the terminals “2-1 "210 and" 2-2 "220 are not changed during the provision of combined" CSI services ", while the first terminal 100 dynamically updates its terminal functionality. Other scenarios are possible, and the present invention is also applicable to them.

[122] Assume that the first terminal 100 of the first user previously performed a combined "CSI service" with the terminal "2-2" 220 of the second user, and, accordingly, the public user identifier, terminal functionality data and terminal functionality version for another terminals are already stored in each of these terminals: both in terminal 100 and in terminal “2-2” 220.

[123] Subsequently, the first terminal 100 performs the combined “CSI service” with the second user terminal “2-1” 210. Accordingly, the public identifier of the user, the data on the terminal’s functionality and the version of the functionality of another terminal, which are exchanged during the establishment of the connection for the combined “CSI service”, are stored in each of these terminals: both in the first terminal 100 and in the terminal “ 2-1 ″ 210 (S71).

[124] That is, the first terminal 100 stores in its memory an open user identifier, terminal functionality data and a terminal functionality version related to the terminal “2-1” 210, and also stores the same information related to the terminal “ 2-2 "220. Here, for example, the version of the functionality of the terminal for the first terminal 100 has the value" 10000100 ", while the versions of the functionality of the terminals 210 and 220 have, for example, the values" 00101010 "and" 10001001, respectively. Since the functionality versions of terminals 210 and 220 can be created based on the functionality data of this terminal using or without using an open user identifier and / or personal user identifier, as discussed above, each version (value) of functionality will be individual.

[125] Subsequently, if the terminal functionality data for the first terminal 100 is changed, for example, by connecting multimedia devices such as a camera or disconnecting it from it, the first terminal 100 uses at least its changed data on terminal functionality for re-creating an individual version of the terminal functionality (S72). Here, for example, the value of the newly created version of the terminal functionality for the first terminal 100 is “10000101”.

[126] When the first terminal 100, having acquired the changed terminal functionality data, needs to perform another combined “CSI service” with the terminal “2-1” 210, the terminal “2-1” 210 determines based on the changed version of the terminal functionality the first terminal 100, that the current terminal functionality data for the first terminal 100 has changed. That is, to determine this, the terminal 210 compares the received version of the functionality of the terminal of the first terminal 100 with a previously saved version. Then, the terminal “2-1” 210 requests and receives the changed terminal functionality data for the first terminal 100 from this terminal, for example, using “OPTIONS”, etc. (S73).

[127] Next, the second user registers the call forwarding function to forward the calls received at the terminal “2-1” 210 to the terminal “2-2” 220 (S74 and S75). For example, the second user (terminal “2-2” 220) registers the call forwarding request in the second core network 420 of the multimedia data transmission service subsystem based on Internet protocols (“IMS service”), after which the data is generated and stored in memory as appropriate call forwarding settings (data related to the call forwarding function). In another embodiment of the present invention, the terminal “2-1” 210 registers a call forwarding request in the second core network 420 of the Internet Protocol Multimedia Transmission Service subsystem (“IMS service”), after which the data is generated and stored in memory as appropriate call forwarding settings (data related to the call forwarding function).

[128] Further, when the first terminal 100 desires to perform the combined “CSI service” with a second user, for example, the “2-1” terminal 210, the first terminal 100 sends a connection setup message for the CS-switched service (for example, a message "SETUP"), directed to the terminal "2-1" 210 of the second user. This connection establishment message may comprise a current version of the terminal functionality of the first terminal 100, having, for example, a value of “10000101”.

[129] Due to the fact that the call forwarding function has been registered, the second core network 420 of the multimedia data transmission subsystem based on the Internet protocols ("IMS service") sends a message about the establishment of the connection to the terminal "2-2" 220 of the second user, using the registered call transfer function (S76).

[130] Then, the second terminal “2-2” 220, in response to the received connection establishment message, sends a “CONNECT” connection establishment message to the first terminal 100 (S77). The “CONNECT” connection establishment message may contain the current version of the terminal functionality for the “2-2” 220 terminal, having, for example, the value “10001001”. Accordingly, a connection is established for the combined “CSI service” between the first terminal 100 and the terminal “2-2” 220.

[131] The first terminal 100 compares the received version of the terminal functionality for the terminal “2-2” 220 with the previously saved version of the terminal functionality for the terminal “2-2” 220. After that, the first terminal 100 selects and performs the functionality data exchange procedure a terminal or directly a connection establishment procedure for conducting a communication session for an “IMS service” in accordance with the results of this comparison (S78).

[132] That is, if it is determined in step S78 that the received version of the terminal functionality for the terminal “2-2” 220 is different from the stored version of the terminal functionality for the terminal “2-2” 220, the first terminal 100 determines that after the previous combined “CSI service” has been completed, the data on the terminal’s functionality for the “2-2” 220 terminal has changed, and, accordingly, it sends a message with the “OPTIONS” request to the “2-2” 220 terminal and exchanges with it functionality data ter minala (or accepts them) (S82 and S83). On the other hand, if it is determined in step S78 that the received version of the terminal functionality for the terminal “2-2” 220 matches the stored version of the terminal functionality for the terminal “2-2” 220, the first terminal 100 determines that the terminal’s functionality for the “2-2” terminal 220 has not changed and directly proceeds to the session setup procedure for the “IMS service”, without performing the procedure for exchanging terminal functionality data (S86).

[133] On the other hand, the terminal “2-2” 220 compares the received version of the functionality of the terminal of the first terminal 100 with a previously saved version of the functionality of the first terminal 100 and selectively performs a procedure for exchanging data on the functionality of the terminal with the first terminal 100 based on the results of this definitions (S79). If the received current version of the terminal functionality of the first terminal 100 does not match the saved version of the terminal functionality of the first terminal, for example, if the value of the received version of the terminal functionality is “10000101” and the value of the saved version of the terminal functionality is, for example, “1000 0100” , then the terminal "2-2" 220 determines that the current data on the functionality of the terminal of the first terminal 100 after performing the previous combined "CSI services" is changed got married. The terminal “2-2” 220, respectively, determines that it is necessary to perform the procedure for exchanging data on the terminal’s functionality with the first terminal “100” in order to update the data on the terminal’s functionality of the first terminal stored in the terminal “2-2" 220, so that they coincided with the actual (changed) data on the functionality of the terminal of the first terminal 100. The procedure for exchanging data on the functionality of the terminal can be started by sending a message with the request “REQUEST” (OPTIONS ) from the terminal “2-2” 220 to the terminal 100 (S80).

[134] The first terminal 100, having received the message request “OPTIONS” (OPTIONS), sends the changed data about the functionality of the terminal using the response message “OPTIONS” (S81). The response message “OPTIONS” may even contain a version of the functionality of the terminal of the first terminal 100. The terminal “2-2” 220 receives the modified data about the functionality of the terminal of the first terminal 100 from the response message “OPTIONS” and then stores the received data.

[135] After this, the first terminal 100 establishes a communication session for the "IMS service" with the terminal "2-2" 220 in accordance with the known procedure for setting up a communication session (S86) and exchanges multimedia data with it in accordance with the combined "CSI service "(S87).

[136] The present invention uses the terminal functionality version to determine whether or not the terminal functionality data has changed, and based on the results of this determination, request terminal functionality information only from the terminal whose functionality information has changed. Thus, in accordance with the present invention, steps S80 and S81 and / or S82 and S83 for requesting and receiving terminal functionality data are not executed if the terminal functionality information has not changed, as determined by comparing versions (values) terminal functionality.

[137] In addition, if the terminal functionality data related to at least one terminal changed after the previous combined “CSI service” was executed between the two terminals that previously performed the combined “CSI service”, then the version of the functional capabilities of the terminal can be used to correctly determine whether the data on the functionality of the terminal for each terminal has changed, so the data on the functionality of the terminal stored in the local m memory location (e.g., memory) of each terminal may be updated, thereby avoiding performing unnecessary signaling procedures (e.g., S84 and S85 steps) during a session for setting communication «IMS-services". For example, you can avoid the process of sending an “INVITE” message based on inaccurate data on the functionality of another terminal and, therefore, receiving an incorrect response (S84 and S85), because each terminal always contains accurate data on the functionality of other terminals, allowing communication with them.

[138] The concept of the invention shown in FIGS. 7 and 8 is equally applicable to a situation in which a communication session is first established for an “IMS service” and then a connection is established for a circuit-switched service — “CS services” (for example 5) between terminals, some of which use the same public user identifier.

[139] Thus, when a single user has at his disposal several terminals using the same open user identifier, individual versions of terminal functionality that differ from each other can be generated based on at least terminal functionality data for each terminal and the specified generated versions of the terminal functionality can be exchanged during the establishment of a connection or setting up a communication session. Accordingly, the present invention enables the sending side terminal and the receiving (end) side terminal to determine whether or not the terminal functionality of the other terminal has changed. Therefore, the disadvantages of the known technical solution that may arise when using additional services, such as call forwarding, can be eliminated.

[140] In accordance with preferred embodiments of the present invention, a user device “UE” or a mobile terminal (but not only them) capable of providing circuit-switched services (“CS service”), protocol-based services, can be used as a terminal establishing a SIP communication session, for example, services of a multimedia data transmission subsystem based on Internet protocols (“IMS service”), combined services, such as a combined “CSI service”, etc. For example, terminals may include, but are not limited to, a subscriber of multipoint half-duplex communication - “RT (Push To) -client”, mobile phone, “UE” (user device) for the UMTS network (universal mobile communication system), etc. , “MS” mobile station for GSM networks (global system for communicating with mobile objects), etc., a laptop computer, a PDA handheld computer, and various types of mobile terminals. The PT-client subscriber can be a subscriber of the PTT- (Push To Talk) multipoint half-duplex telephone communication system, a subscriber of the RoC-service mobile radio-telephone communication system, a subscriber of the PTV - Push To Video video communication system, a subscriber of the communication system for data transmission "PTD - Push To Data", etc.

[141] In accordance with the present invention, the first through third embodiments of the present invention discussed here have the same or similar steps. In this case, the changes discussed in any of the embodiments of the present invention can be applied to other embodiments of the present invention. In addition, whenever the terminal receives a version of the functionality of another terminal that is different from the corresponding previously stored version of the functionality, the terminal saves this received version of the functionality of the terminal as the current version of the functionality of another terminal. Similarly, data is stored on the functionality of another terminal. In addition, if during the comparison of the functionality versions it is determined that no version of the terminal functionality for the target terminal is stored in the terminal, the terminal can perform actions to request the terminal functionality version and / or terminal functionality data from the target terminal.

[142] The method of the present invention can be implemented, in particular, using an existing computer programming language. Such computer programs may be stored in memory devices, removable or another type, such as hard drives, random access memory (RAM), read-only memory (ROM), programmable read-only memory (ROM), etc., associated with one or more by computers or computer-based devices, such as networks and / or terminals. Alternatively, such computer programs may be stored on other types of recording media such as USB sticks (flash memory), magnetic disks, optical disks, magneto-optical disks, etc. Such computer programs can also provide signal propagation through networks such as the Internet, Extranet, Intranet and others, as well as its delivery to destination devices (for example, network servers or terminals) for storage and use. Computer programs can be read using well-known computers or computer-based devices.

[143] As described above, in the present invention, whenever the functionality data of any terminal is changed, an individual version of the terminal functionality corresponding to the updated terminal functionality data is generated and stored, and then a connection establishment message for the service can be sent with the inclusion in this message of a version of the terminal’s functionality. After that, the sending terminal and the receiving (terminal) terminal can compare the terminal functional data correspondingly stored in the memory for another terminal and the received terminal functional data of the other terminal, so that it is possible to effectively determine whether the terminal functional data has changed at the other terminal .

[144] In addition, in the present invention, if a change in terminal functionality data is confirmed based on a received version of the terminal functionality for another terminal, the first terminal requests changed terminal functionality data from another terminal whose terminal functionality data has changed , and receives the requested data from it, thus maintaining the correspondence of the data in the local storage of this first terminal and shortening I have signaling procedures performed for the exchange of terminal functionality data.

[145] Additionally, in the present invention, it is possible to simplify a connection establishment signaling procedure for a service by determining whether the functionality data of another terminal has changed, and selectively performing either a terminal functionality data exchange procedure or a connection establishment procedure for the service in accordance with the results determination step.

[146] In the present invention, even when the user has several terminals with the same public user ID and has registered a call forwarding function, both the sending terminal and the receiving terminal can respectively determine whether the functionality data of the other terminal terminal (s) has changed ) in order to prevent the use of inaccurate or old data stored in the storage devices of the terminal, and errors arising from this.

[147] Since the present invention can be implemented in several variants, without going beyond the essence of the invention or its essential characteristics, it should be understood that the above embodiments of the present invention are not limited to any details of the previous description, unless otherwise expressly agreed, but are limited in the broad sense, only the essence and scope of the invention defined by the attached claims, and, therefore, changes and modifications are possible that fall into the scope of the invention. nullified by the provisions of the claims or their equivalents defining a region corresponding to the scope of the attached claims.

Claims (29)

1. A terminal capable of providing a circuit switching service — a “CS service”, a service based on a SIP session establishment protocol, or a combined “CSI service”, which is a combination of a circuit switching service — a “CS service” and a transmission subsystem service multimedia data based on Internet protocols - “IMS-services”, containing
a controller designed to receive a version of the terminal’s functionality of at least one target terminal to compare this received version of the terminal’s functionality with a previously stored version of the terminal’s functionality of at least one target terminal and to determine based on the comparison result whether to request data on the functional capabilities of the terminal of at least this one target terminal,
in which the specified version of the functionality of the terminal determines the version of the functionality of at least one of the target terminal. 2. The terminal according to claim 1, in which if this received version of the terminal’s functionality of at least one target terminal is different from the previously stored version of the terminal’s functionality of this at least one target terminal, then the specified controller requests data the terminal functionality of this at least one target terminal. 3. The terminal according to claim 2, in which if the received version of the terminal functionality of this at least one target terminal matches the previously stored version of the terminal functionality of this at least one target terminal, the specified controller ignores the request procedure data on the functionality of the terminal of this at least one target terminal for this at least one target terminal and continues to work with the “CS-service” or “IMS-service”. 4. The terminal according to claim 2, in which the specified controller requests current data about the functional capabilities of the terminal of this at least one target terminal using the message “REQUEST” (OPTIONS). 5. The terminal according to claim 1, wherein said controller receives a version of the terminal functionality of this at least one target terminal from this at least one target terminal during connection setup for a “CS service” or during establishing a communication session for "IMS services." 6. The terminal according to claim 1, in which the specified version of the terminal functionality of this at least one target terminal means an individual value generated on the basis of at least data on the terminal functionality of this at least one target terminal. 7. The terminal according to claim 1, in which the version of the functionality of the terminal of at least one target terminal has the value "UCV-XX" (version of the functionality of the device UE - XX), where XX is a 2-bit hexadecimal number. 8. The terminal according to claim 1, in which at least one target terminal includes a second terminal and a third terminal for selectively exchanging data about its terminal capabilities with said controller, the third terminal being assigned by the second terminal for data exchange directly with the specified terminal based on data on setting up the call forwarding function. 9. The terminal of claim 8, in which, based on the configuration data of the forwarding function, when the controller transmits the configuration request message intended for the second terminal, the third terminal receives the configuration request and transmits a version of the functionality of the terminal of the third terminal to said controller. 10. The terminal of claim 9, wherein said controller compares the received version of the terminal functionality of the third terminal with the stored version of the terminal functionality of this third terminal and, based on the comparison result, determines whether to request data on the terminal functionality of this third terminal. 11. The terminal of claim 10, in which the specified controller requests data about the functionality of the terminal of this third terminal, if the received version of the functionality of the terminal of this third terminal is different from the previously stored version of the functionality of the terminal of this third terminal; and
where said controller ignores the procedure for requesting data on the terminal’s functionality and continues to perform the procedure for providing the requested service if the received version of the terminal’s terminal functionality matches the stored version of the terminal’s terminal functionality. 12. A method for providing a channel switching service - “CS-services”, a service based on a SIP session establishment protocol or a combined “CSI-service”, which is a combination of a channel switching service - “CS-services” and a multimedia data transmission subsystem service based on Internet protocols - “IMS-services”, which includes the following steps:
receiving by the terminal a version of the functionality of at least one target terminal;
comparing the specified terminal with this received version of the terminal functionality with a previously stored version of the terminal functionality of this at least one target terminal; and
determining by the indicated terminal on the basis of the comparison results whether to request data on the terminal’s functionality for this at least one target terminal,
in which this version of the functionality of the terminal determines the version of the functionality of this at least one target terminal. 13. The method according to item 12, in which, if the given version of the terminal functionality of this at least one target terminal is different from the previously stored version of the terminal functionality of this at least one target terminal, then the determination step determines request data on the terminal functionality of this at least one target terminal from this at least one target terminal. 14. The method according to item 13, in which, if the adopted version of the terminal functionality of this at least one target terminal matches the previously stored version of the terminal functionality of this at least one target terminal, then at the determination step it is determined to ignore the procedure for requesting data on the functional capabilities of the terminal of this at least one target terminal from this at least one target terminal and continue to work with the “CS service” or “IMS service”. 15. The method according to item 13, in which at the step of determining determine to request current data about the functionality of the terminal for this at least one target terminal using the message "REQUEST" (OPTIONS). 16. The method according to item 12, in which, at the receiving step, a version of the terminal functionality of this at least one target terminal is received from this at least one target terminal at the time of establishing the connection for the circuit switching service - “CS services” or during the setup of the communication session for the "IMS service". 17. The method of claim 12, wherein the version of the terminal functionality of this at least one target terminal is an individual value generated based on at least data on the terminal functionality of this at least one target terminal. 18. The method according to item 12, in which the version of the functionality of the terminal of at least one target terminal has the value "UCV-XX" (version of the functionality of the device UE-XX), where XX is a 2-bit hexadecimal number. 19. The method according to item 12, in which this at least one target terminal includes a second terminal and a third terminal, designed for the selective exchange of their data on the functionality of the terminal with the specified terminal, and
in which, if the second terminal designates a third terminal for exchanging data directly with the indicated terminal based on the setting data of the forwarding function, and then, if the indicated terminal transmits a setting request message intended for the second terminal, the method further comprises the following steps:
reception by the third terminal of a configuration request from said terminal based on the configuration data of the forwarding function; and
transmission by the third terminal to the indicated terminal of the version of the terminal functionality of the third terminal in response to a configuration request. 20. The method according to claim 19, further comprising the following steps:
comparing the specified terminal with the received version of the terminal functionality of the third terminal with the stored version of the terminal functionality of the third terminal; and
determining by the indicated terminal based on the result of this comparison whether to request data on the functionality of the terminal of this third terminal. 21. The method according to claim 20, in which, in the determination step, it is determined to request data on the functionality of the terminal of this third terminal if the received version of the functionality of the terminal of the third terminal is different from the previously stored version of the functionality of the terminal of the third terminal; and
where, in the determination step, it is determined to ignore the procedure for requesting data on the terminal’s functionality and continue the procedure for providing the requested service if the received version of the terminal’s terminal functionality matches the stored version of the terminal’s terminal functionality. 22. A method for providing a channel switching service - “CS-services”, a service based on a SIP session establishment protocol or a combined “CSI service”, which is a combination of a channel switching service - “CS-services” and a multimedia data transmission subsystem service based on Internet protocols - “IMS-services”, which includes the following steps:
storing in the first terminal during the previous combined “CSI service” the identifier of the second terminal, the functionality of the terminal of the second terminal and the version of the terminal of the second terminal, in which this version of the terminal of the second terminal identifies the version of the functionality of this second terminal;
storing in the second terminal during the previous “CSI service” the identifier of the first terminal, the functionality data of the terminal of the first terminal, as well as the functionality version of the terminal of the first terminal, where this version of the functionality of the terminal of the first terminal identifies the functionality version of the first terminal;
updating the functionality of the first terminal if the functionality of the first terminal is dynamically changed;
generating by the first terminal a new version of the terminal functionality of the first terminal based on at least these updated terminal functionality data of the first terminal;
transmitting an INVITE message from the first terminal to the second terminal to configure the communication session for the IMS service, the INVITE message including this new version of the terminal terminal functionality;
comparing the second terminal received this version of the terminal functionality of the first terminal with a previously stored version of the terminal functionality of the first terminal; and
selective execution, based on the result of this comparison, by the second terminal of the procedure for requesting data on terminal functionality. 23. The method of claim 22, wherein said step of selectively performing a data request procedure includes
execution by the second terminal of the procedure for requesting data on the terminal’s functionality at the first terminal using the request message in accordance with the SIP OPTIONS protocol of establishing a communication session to obtain these updated data on the terminal’s terminal capabilities, if the comparison result shows that the received version of the functional the capabilities of the terminal of the first terminal is different from the stored version of the functionality of the terminal of the first terminal. 24. The method of claim 22, wherein said step of selectively executing a request procedure includes
ignoring by the second terminal the procedure for requesting data on the terminal’s functionality and performing the session setup procedure for the “IMS service”, and then the connection procedure for the “CS service” for the current combined “CSI service”, if the comparison result indicates that the received the version functionality of the terminal of the first terminal is the same as the stored version of the functionality of the terminal of the first terminal. 25. The method according to item 22, in which at the indicated step of saving the version of the terminal functionality of the first terminal means an individual value generated based on at least data on the terminal capabilities of the first terminal, and the version of the terminal functionality of the second terminal means an individual value, generated on the basis of at least data on the functionality of the terminal of the second terminal. 26. The method of providing channel switching services - “CS-services”, services based on the protocol of establishing a communication session “SIP” or combined “CSI-services”, which is a combination of channel switching services - “CS-services” and multimedia data transmission subsystem services based on Internet protocols - “IMS services, which includes the following steps:
storing in the first terminal during the previous combined “CSI service” the identifier of the second terminal, as well as the functionality of the terminal of the second terminal, and the version of the terminal of the second terminal, in which this version of the terminal of the second terminal determines the version of the terminal’s functionality second terminal;
storing in the second terminal during the previous combined “CSI service” the identifier of the first terminal, as well as data on the terminal capabilities of the first terminal, and a version of the terminal capabilities of the first terminal, in which this version of the terminal capabilities of the first terminal determines the version of the functionality of this first terminal;
updating the terminal functionality of the terminal of the first terminal if the terminal functionality of this first terminal is dynamically changed;
generating by this first terminal a new version of the terminal functionality of the first terminal based on at least these updated terminal functionality data of this first terminal; transmitting from the first terminal to the second terminal a connection establishment message for establishing a CS-switched channel connection of the current combined “CSI service”;
transmitting from the second terminal to the first terminal a connection establishment message in response to said connection establishment message, wherein the connection establishment message contains a current version of the terminal functionality of this second terminal;
selective execution by the first terminal of a procedure for requesting data on terminal capabilities based on comparing a version of the terminal capabilities of the second terminal contained in the received connection establishment message with a stored version of the terminal functionality of the second terminal;
transmitting an INVITE message from the first terminal to the second terminal, wherein said new version of the terminal functionality of the first terminal is included in the transmitted INVITE message and / or in the transmitted connection establishment message; and
selective execution by the second terminal of a request procedure for terminal functionality data based on a comparison of a terminal functionality version of a terminal of the first terminal contained in a received connection message and / or an INVITE message with a stored version of the terminal functionality of this first terminal. 27. The method of claim 26, wherein the step of selectively performing said request procedure by the first terminal includes
execution by the first terminal of a procedure for requesting data on terminal capabilities at a second terminal using a request message in accordance with a SIP OPTIONS session establishment protocol to obtain updated functionality data of said second terminal if the comparison result shows that the received version of the functionality the terminal of the second terminal is different from the stored version of the functionality of the terminal of this second terminal; and
ignoring the first terminal by requesting data on the terminal’s functionality and executing the CS circuit connection setup procedure, and then establishing a session connection for the IMS service for the current combined CSI service, if the comparison result indicates that the received the version functionality of the terminal of the second terminal is the same as the stored version of the functionality of the terminal of the second terminal. 28. The method of claim 26, wherein the step of selectively performing said request procedure by the second terminal includes
execution by the second terminal of a procedure for requesting data on terminal capabilities at a first terminal using a request message in accordance with a SIP OPTIONS session establishment protocol to obtain updated terminal functionality data of said first terminal if the comparison result indicates that the received version of the functional the capabilities of the terminal of the first terminal is different from the stored version of the functionality of the terminal of this first terminal ; and
ignoring by the second terminal the procedure for requesting data on the terminal’s functionality and performing the CS circuit connection establishment procedure, and then establishing a session connection for the “IMS service” for the current combined “CSI service” if the comparison result shows that the received the version functionality of the terminal of the first terminal is the same as the stored version of the functionality of the terminal of the first terminal. 29. The method according to p. 26, in which at the step of saving the version of the terminal functionality of the first terminal means an individual value generated on the basis of at least the terminal functionality of the terminal of this first terminal, and the version of the terminal functionality of the second terminal means an individual value, generated from, at a minimum, data on the functionality of the terminal of this second terminal.

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