Method, system and network device meant for routing a message to a temporarily inaccessible network user

FIELD: communication system, possible use for routing a message to a temporarily inaccessible network user.

SUBSTANCE: in accordance to the invention, subscription is imitated for network user registration status, if network user is listed as inaccessible. Then notification is generated, when network user registration status changes, to list condition, when network user is accessible again or when network user is registered again, and message is routed to network user in response to receipt of notification.

EFFECT: ensured awareness of subscriber about condition of connection or registration of network user.

4 cl, 4 dwg

 

The technical field to which the invention relates

The present invention relates to a method, system and network device intended for routing messages, for example, notifying a messaging service multimedia (MMS, SOM), is temporarily unavailable to the network user, for example, the subscriber multimedia subsystem Internet Protocol (IMS, PMR).

The level of technology

In order to achieve independence and access to mutual support smooth operation with wired terminals through the network, developed PMR, as defined, for example, in the 3GPP specification TS 23.228, to be compatible with the "Internet Standards" IETF (Committee engineering support Internet). Subsystem core network IP multimedia (IMCN, BSMR) enables network operators mobile or cellular networks to offer their subscribers multimedia services based and built on the applications, services and protocols of the Internet. The idea is to develop such services with the mobile network operators and other suppliers, 3rd parties, including vendors in the space of the Internet, using mechanisms provided by the Internet and subsystem BSMR. Therefore, PMR allows conversion of voice, video, messaging, data, and technologies based on the web, and accessing user is atela wired networks, and integrates the development of Internet the development of mobile communication.

Figure 1 depicts the network architecture PMR in accordance with the above specification 3GPP (partnership project 3rd generation). The architecture is based on the principle that the management service for its own subscribed services for a subscriber, performing roaming, located in a private network HN, CP, for example, the service control function call status S-CSCF, FUSW located in a private network of the SS. Figure 1 shows the current or old O-FOSW 10 and future or new On-Fosit 12, between which can be displaced terminal device or user equipment 40 (UE, PA), for example, due to changed functionality required arising from changes in the profile of the subscriber or network coverage PA 40.

In General, ON-FOSW performs the service control session accepted for PA. It supports session state as needed by the network operator for support services that can be provided by the server 60 applications (AS, COA), which can be located in a private network SS or improper network NA. The network operator different ON-FOSW can have different functional purpose. The functions performed by using ON-FOSW during the respective session, are, for example, check, flow control is IANSA, payment management and use of resources. When the caller performs roaming in a non-native network of the national Assembly, improper network supports intermediary (proxy) FUSW 30 (P-CSCF, P-FUSV), which gives the possibility that the session has been transferred to the respective ON-FOSW located in the private network of the SS and providing management services. In addition, the private network of the SS provided the requesting FUSW 50 (I-CSCF, S-FUSV) as a contact point in the operator's network for all connections destined to a subscriber of the operator of the network, or the subscriber, performing roaming, are currently in the service area of the operator of this network. There can be many C-FOSW in the operator's network. The functions performed by using C-FOSW 50, include the appointment of O-FOSW the user performing the registration procedure, the routing request received from another network, ON-FUSV, save addresses ON-FOSW from the database of the subscriber, for example, the server 20 of the subscriber private network (HSS, SASS), as shown in figure 1, and/or transfer requests or responses in ON-FOSW determined based on address changes from SASS 20.

P-FOSW 30 is the first point of contact in PMR. Her address detect through PA 40 after the activation of the PDP context, PPD (packet data Protocol). P-FOSW 30 behaves as an authorized server, Teana accepts requests and services them internally or forwards them further, perhaps after conversion. P-FOSW 30 also can behave as a user agent, i.e. when abnormal conditions it may terminate and independently generate a transaction. The functions performed by using P-FOSW 30 are sending registration requests received from the PA-30, C-FUSV, for example, C-FOSW 50 defined using the domain name of its own network, which is provided through PA 40, and transfer requests or responses in PA 40.

Further details concerning the functions of different elements FUSW depicted in figure 1, can be obtained from the above-mentioned 3GPP specification.

The IETF has specified event packet Protocol session initiation (SIP, IPR), as defined in "draft-ietf-sipping-reg-event". Through his way to REGISTER IPR allows the user agent, which is an interface (e.g., browser) between the user and the network application to create, modify and delete registrations. Registration can also be changed by the administrator in order to carry out the policy. The result of these registrations are part of the state of the network, which may change dynamically. There are many cases when a user agent would like to be notified about changes in this state. The package defines the mechanism by which these p is lovatelli agents can request and receive such notification.

How to REGISTER IPR provides a way for a user agent to manipulate the registrations. Contacts can be added or removed, and the current set of contacts may be requested. Registration can also change as a result of strategies of administrator. For example, if a user is suspected of fraud, its registration may be removed so that such users can't take any requests. Registration will expire after some time if not updated. Therefore, registration represent the dynamic part of the state, supported by the network. The event-driven SPI defines the General framework for event subscription associated with IPR systems, and for notification of events associated with the IPR systems. The framework defines how to SIGN and to INFORM and introduces the concept of service. The package is a specific application of the basic events for a particular event class, for example, state registration.

Message to SIGN for the package can contain a body designed to filter subscription. It can be sent with a body or without a body. The default strategy is that the notification trigger message to SIGN and generate whenever there is a change of state of any of the registered to the bars for a resource, to be subscribed. These notifications contain only information regarding contacts whose state has changed. The notification is passed using a message to NOTIFY that contains in its body the document information registration that describes some or all of the contacts associated with a particular address of record.

In specifications version 5 PMR 3GPP TS 24.229, 24.228 and 23.218 package is used for event registration, to inform about the status of the user registration of subscribers of the service event. Version 6 PMR 3GPP to introduce new services into the system, such as Presence, Messaging, conference and SOM. There are services, such SOSM that might use the network capabilities of PMR. Network PMR can provide accurate information regarding the registration of the user using a service event status register SPI, and also gives the possibility of transfer notice of SOM using, for example, request MESSAGE IPR.

In accordance with the specifications of version 5 PMR subscriber PMR is either registered or its registration is cancelled. However, despite the fact that is registered, the subscriber PMR may be unavailable, for example due to battery discharge, temporary loss of coverage of the radio station at the current location of the subscriber that is the tsya fairly common in large cities or areas, where the service area of the radio station because of some reasons is not uniform. As a result of external services that use the network PMR may not be notified if the user service is not available.

The invention

Therefore, the present invention is to provide a method, system and network device through which the application server, use the network PMR for transmission of the message may be notified if the service user is unavailable.

This problem is solved using the method of routing messages is temporarily unavailable to the user network, namely, that

sign on the service status event referred to a network user;

generate a notification when the said service state event mentioned network user is changed to indicate the condition when the said user network is again available, or when the said network user registered again; and

route mentioned error message that is mentioned to the network user in response to receiving the aforementioned notification.

In addition, the above-mentioned problem is solved by a network device designed to service user network data, and referred to the network device is configured with the memory package event, indicates that the user is not registered or is registered but is not available, and generate a notification to the subscriber of the mentioned service status event if the event packet status indicates that the user is available.

In addition, the above-mentioned problem is solved by using a network server, designed to generate a message directed to the network users, and the said server configured to subscribe to the unavailable status of the user network and the directions of the messages mentioned are not available to the network user in response to receiving notification of the status indicating that the above is not available, the user network is available.

Finally, the above problem can be solved using a system designed for routing messages are temporarily unavailable to the network user, and the system includes a network server and a network device, as defined above.

Thus, the external application server can be signed on the state registration of the user and, therefore, may be notified if the user is registered. In addition, the user may not be available, even if registered.

Thus, external services, using the network of the WORLD, can be notified about the availability of a well-known using the network PMR.

In the present invention the term "available" should be understood in the sense of covering all scenarios, when the subscriber cannot be reached, i.e. such situation, when the user intentionally does not want to be disturbed, for example, because of a meeting.

Subscription stage can be performed in response to receiving the message indicating that the network user is not available or is not registered.

In addition, the notification may contain information indicating that the network user is again reachable, even if the status register is not affected. In particular, this information may be event information flag. It can be set in a state indicating that the user is available, after the terminal device of the network user has performed a successful attempt to install outbound session or an incoming session. Re-registration may be determined on the basis of the notice of re-appointment of the user. Then the subscription can be updated in response to notified of re-registration.

Additional advantages, modifications and developments are defined in the dependent claims.

Brief description of drawings

Subsequently, this is th invention will be described in more detail based on preferred embodiments with reference to the accompanying drawings, on which:

figure 1 depicts the principal block diagram of the network architecture, which can be implemented with the preferred embodiments of the present invention;

figure 2 depicts a diagram of signal transmission and processing of messages indicating the delivery of the notification to the subscriber PMR in accordance with the first preferred embodiment;

figure 3 depicts a diagram of signal transmission and processing of messages indicating the delivery of the notification to the subscriber PMR in accordance with the second preferred embodiment;

figure 4 depicts a diagram of signal transmission and processing of messages indicating the delivery of the notification to the subscriber PMR in accordance with the third preferred embodiment.

Description of the preferred embodiments

Now will be described the preferred embodiments of on the basis of delivery of the notice of SOM in network architecture PMR, as depicted in figure 1.

Architecture PMR depicted in figure 1, refers to the set of objects of the basic network that uses services provided by a domain with packet switching, to offer multimedia services. SASS 20 is the main database for this user and includes the functions of a traditional reference registers location (HLR, ORME), but also the s functionality, defined for IP networks, such as PMR. SASS 20 is an object that contains information associated with a subscription to support the network entities actually processing the calls and/or sessions.

Figure 2 depicts a schematic diagram of the transmission signals in accordance with the first preferred embodiment, where SP 60 delivers its notice of SESM subscriber PMR PA 40 using registered/not registered information pack event status register to be notified that the subscriber is registered again and, therefore, is available.

In accordance with the first preferred embodiment, the proposed solution, based on IPRs, for notices of ASM that uses the existing functionality of the network PMR.

When SP 60, which may be a server SOM, is going to deliver the notice of SOSM the user or subscriber PMR, it generates a request MESSAGE IPR and includes the direct or indirect notice as the payload of a request (step 1). If the subscriber PMR not registered at this point, the request MESSAGE is not delivered in PAS 40, but instead reject using ON-FOSW default, for example, FUSW 10, using response errors IPRs, for example, is Temporarily Unavailable IPR 480. In this embodiment, the SP 60 matched with the edge of the JV IPRs in the network architecture PMR and acts as a user agent IPR. The applicant proposes that the joint 60 may initiate its own inquiry and to delegate to it the user, for example, using the request-FOSW user in the Sh interface or by sending request in C-FOSW 50. Because the user is not currently registered, the applicant also suggests that the status register may also be provided when the user is unregistered. Therefore, the provision of state registration is equivalent to the service, which also applies to unregistered state. If the user has services related to unregistered state, i.e. SASS 20 stores a user profile for the unregistered state, then it will be assigned ON-FOSW default to process the request. Because the user is not registered, does not have the route memorized using ON-FOSW010, in PAS 40, so ABOUT-FOSW 10 will reject the incoming request MESSAGE IPR using the response using the response failure IPR 4xx.

Additional details regarding the creation of a route can be obtained from the 3GPP specification TS 24.229.

In accordance with figure 2 C-FOSW 50 initiates a request in SASS (phase 2) in response to reception of the request MESSAGE IPR from CN 60 to obtain the routing information. Then, it forwards the request WITH BENIE on the stage 3 in-FOSW 10 default who is responsible for SP 60 on the stages 4A and 4b using the response is TEMPORARILY UNAVAILABLE IPR 480. Since the request MESSAGE is rejected, SP 60 signs on the state registration of the user by passing the request to SIGN up for the event status register in the same way as the previously sent request MESSAGE, for example, by using a handover request in C-FOSW 50 (step 5), which may request SASS 20 phase 60-FOSW user. On the basis of the fact that was previously assigned ON-FOSW 10 re-appointed or not, could be the need to assign a new O-FOSW default to process the request to SIGN.

When OH FUSW 10 accepts the request to SIGN in step 7, it should authenticate and authorize it, as required in accordance with the specification IETF RFC 3265. Successful subscription confirm with OK response IPR 200 in steps 8A and 8b. In PMR 3GPP authentication solve using the IETF specification RFC 3235, while SP 60 inserts its audited naming request IPR. Based on this ON-FOSW 10 can decide whether SP 60 authorized by the subscriber for the state registration of the specific user, and if it is, it can establish a subscription. In accordance with the specification 3GPP N1-030285 all application servers of the SS is authorized to sign for the package event registration is I. Therefore, SP 60 is authorized, if he belongs to the SS.

However, when the user or subscriber PMR registered (again) on stage 9, a request to NOTIFY sent to the stages 10A and 10b by using ON-FOSW 10, will inform the SP 60 on changes in the registration status of the user. SP 60 acknowledges receipt with response OK IPR 200 stages 11a and 11b. Therefore, SP 60 may re-initiate its request MESSAGE and send it via ON-FOSW 10 PA 40 on stages 12 and 14 (query SASS using ON-FOSW on stage 13), in order to transmit and deliver the notice of SESM subscriber PMR PA 40 on stage 15.

Figure 3 depicts a schematic diagram of the transmission signals in accordance with the second preferred embodiment, where SP 60 delivers its notice of SESM subscriber PMR PA 40 using update subscription on the basis of movement of the subscription re-appointed On-Fosit 12.

Figure 3 stages 1 through 9 correspond to the first preferred variant implementation, as shown in figure 2, so that their description may be omitted in this section for reasons of simplicity.

However, when the user or subscriber PMR registered (again) in step 9, it is possible that he will be appointed as the new On-Fosit 12 as the designated ON-FOSW must have the correct functionality, is provided with a registered status. In this case the old O-FOSW 10 will be informed of the re-appointment (step 10) via the CX interface, as described in the 3GPP specification TS 23.228. At this point before ON-FOSW 10 would have lost the user profile, it moves the subscription re-appointed On-Fosit 12 with the issuance of the request, NOTIFY the IPR stages 11a and 11b, which includes the title of the status of the subscription that contains the value "completed". SP 60 responds with confirmation OK IPR 200 stages 12A and 12b.

In accordance with the specification IETF RFC 3265, if the move subscription JV 60 initiates a re-subscription to the stage 13. After a request SASS using C-FOSW 50 at step 14 a request to SIGN a pass in O-Fosit 12 on the stage 15. On-Fosit 12 responds with confirmation OK IPR 200 stages 16A and 16b. Therefore, by moving the update subscription request to SIGN will be completed in re-appointed On-Fosit 12, which will run the steps in authentication and authorization, as described above, and will set the subscription.

Because the user PMR now registered, the request to NOTIFY sent on the steps 17A and 17b using the new On-Fosit 12, will inform the SP 60 on changes in the registration status of the user. Therefore, after confirmation (not illustrated) SP 60 may re-initiate its request MESSAGE and send it to che is About ez-Fosit 12 (query SASS on stage 19) PA 40 at stages 18 and 20, in order to transfer and deliver the notice of SESM subscriber PMR PA 40 on the stage 21.

At this point, SP 60 could decide to complete the subscription to the registration status of the user or could save the subscription. Assuming the latter case, the subscription will be completed when the user cancels their registration, and the network decides to perform the procedure of deregistration initiated by the network. This is due to the fact that at this point the purpose Of-Fosit 12 canceled, and another O-FOSW could be assigned to handle unregistered state. This procedure is described in the 3GPP specification N1-030296 and TS 24.229.

Therefore, in the case when the subscription JV 60 becomes complete, i.e. it accepts the request to INFORM that includes the title of the status of the subscription that contains the value "completed", he must renew your subscription in accordance with Posit 12, if he still wants to take extra notice on the state registration of the user.

In accordance with the third preferred embodiment, the user or subscriber PMR can be identified as being registered, but still unreachable. To do this, FUSW adapted to support the event packet is registered in the state or in the service of the state is of more information, indicates whether the user is reachable or not. As an example, the user may be impossible if there is a battery discharge or temporary loss of coverage of the radio station at the current location of the subscriber. On-FOSW can identify this situation, if the traffic is not complete successfully delivered to the subscriber. Therefore, introduces a new event for a state, when the subscriber is registered, but is unreachable, for example, "unreachable" or "out of service area". Therefore, when the subscriber is registered, the state can either be "achievable" or "unreachable".

In particular, the state of "achievable" can be set if the traffic is completed to the subscriber reaches the goal, or try to install the incoming session is successful, or terminal device or PA 40 performs the installation of conventional opening session, or have a normal re-registration PA 40. However, when the status is "unreachable", it still can not prevent the traffic is complete. But when the message is sent from PA 40, such as a server COM or similar device, passes fails, SP 60 can subscribe to ON-FUSV, to detect when a caller has once again become achievable. To accomplish this, the JV 60 sign on the service event registration or service a new event Abona is the same.

Therefore, provided a more subtle degree of structure for a package event check, so SP 60 subscribed to the service event can get more accurate information about the availability of the subscriber.

Figure 4 depicts a diagram of the transmission signals, indicating the subscription JV 60 on the service status event subscriber PMR PA 40. Phase 1 notice of SOSM sent in the request MESSAGE IPRs, as defined in the IETF specification RFC 3428, C-FOSW 50, which initiates the request to the SASS 20 in step 2 to obtain the routing information in the current ON-FOSW 10 serving PA 40. Taking the routing information, C-FOSW 50 transmits a request MESSAGE of IPRs on the stage 3 in-FOSW 10. Then it can determine that at the moment PA 40 is unattainable. End-OF-FOSW 10 could at this moment to make a decision that instant messages are not sent to the end user. The decision could be based on some business logic or based on, for example, preferences of the caller and/or the capabilities of the caller. The necessary information can be collected in P-FOSW 30, which may indicate an unreachable state in case of an error response message, for example, the message is Temporarily Unavailable IPR 480. In accordance with the specification IETF RFC 3261, the phrase reasons in the response message can be used too, to transmit the state information of the event. The corresponding status bar looks like this:

Status line = IPR-Version space Status-code Reason-Phrase translation string

Definition unattainable state PA 40 may be based on elapsed time in P-FOSW 30, inviting a response to the request MESSAGE sent to the PA 40. Therefore, P-FOSW 30 suggests that PA 40 is unattainable, and generate a response message indicating an unreachable state.

Thus, the message is Temporarily Unavailable IPR 480, which indicates that the subscriber is not found or is not available, give the stages 4A and 4b through C-FOSW 50 JV 60.

In response to this negative response, SP 60 passes the request to SIGN the IPR through C-FOSW 50, and then request SASS (not illustrated) in ON-FOSW 10 in steps 5A and 5b. On-FOSW 10 confirms the subscription with confirmation OK IPR 200 addressed through C-FOSW 50 JV 60, on the steps 6A and 6b. Once defined a successful transaction PA 40 with O-FOSW 10, such as a transaction initiated using the mobile device, or the transaction was completed with the help of a mobile device, or check PA 40, FUSW 10 issues a request to NOTIFY the IPR contains the status "registered" and the event "achievable"through C-FOSW 50 JV 60 on the steps 7a and 7b. Request to NOTIFY confirmed by the Yu SP 60 in steps 8A and 8b using the appropriate response OK IPR 200.

Thus, SP 60 informed that PA 40 again is achievable, and can now pass on the request MESSAGE IPR containing the notice of SOM through C-FOSW 50 at stage 9 (including the query SASS using C-FOSW 50 stage 10) and O-FOSW 10 and P-FOSW 30 PA 40 on the steps 11a through 11b. In response to this request PA 40 transmits the confirmation OK IPR 200 SP 60 on stages 12A through 12d.

In the JV 60 can be informed about the status of the connection PA 40 and, therefore, may be able to successfully pass the notice of SOM in PA 40.

It should be noted that the present invention is not limited to the preferred versions of the implementation described above. The present invention can be implemented in any network data can be implemented subscription to the registration status of the subscriber, in order thereby to inform the subscriber of attainable or unattainable condition or check the relevant network user. Therefore, options for implementation may vary within the scope of the attached claims.

1. The method of routing messages is temporarily unavailable to the user (40) network, which consists in the fact that the route mentioned error message that is mentioned to the user (40) network when said user (40) network is available again,

wherein the complement is Ino

sign on the service status event mentioned user (40) network, and

generate a notification when the status of the referred user (40) of the network is modified to indicate the status when the said user (40) network is available again, or when referred to the user (40) network again registered

these stage on which to sign, execute in response to reception of a response indicating that the user is unreachable or not registered, and

these stage on which route the message is performed in response to receiving the aforementioned notification.

2. The method according to claim 1 in which the said service status event is a service event status register.

3. The method according to claim 1 or 2, in which the said state, when said user network is again available, is a state in which said user is again reachable.

4. The method according to claim 1 in which the said notification includes information indicating that the network user is either achievable or is out of coverage area.

5. The method according to claim 4, in which said information is information of an event or flag.

6. The method according to claim 4, in which, after initial registration upon the other network user mentioned information set in the state, indicates that the user is available.

7. The method according to claim 4, in which said information set in a state indicating that the network user is out of coverage area, if the schedule of completion for the above user was unsuccessful.

8. The method according to claim 7, in which the said state of being outside the service area is determined on the basis of the cause of the error response message.

9. The method according to claim 4, in which said information set in a state indicating that the network user is achievable, if the terminal device (40) referred to a network user installs the outbound session or re-registration.

10. The method according to claim 1, in which the mentioned re-registration is determined on the basis of the notice of re-appointment referred to a network user.

11. The method according to claim 10, which further renew the subscription in response to the aforementioned notified of re-registration.

12. The method according to claim 1 in which the said message is a notification service exchange multimedia messages (MMS).

13. Network connection device designed specifically for the service user (40) and network server (60) in a data network and for routing messages from the mentioned network server (60) is temporarily not is available to the user (40) network

moreover, the mentioned network device (10, 12) is configured to route the said message, said user (40), when referred to the user (40) network is available again,

characterized in that it further has a capability

generate a response to the mentioned network server (60), indicating that the user (40) network is unreachable or is not registered

subscription referred to a network server (60) on the service status event mentioned user (40) the network after receiving the subscription request sent from the mentioned network server (60), after receiving the above response indicates that the user (40) network is unreachable or is not registered, using the network server,

generating a notification when the status of the mentioned network user is changed to indicate the status, when said user network is again available, or when the said network user registered again,

and routing mentioned message to the person you mentioned (40) network in response to receiving the above message, sent from the mentioned network server, in response to receiving the aforementioned notification.

14. The device according to item 13, which is referred to from outside the group provides information, indicates that the user is either achievable or is out of coverage area.

15. The device according to 14, in which the mentioned network device is configured to establish said information in a state indicating that the network user is available after initial registration referred to a network user or, if the terminal device (40) referred to a network user performs a successful attempt to install outbound session or setup an incoming session.

16. The device 14 or 15, in which the mentioned network device is configured to establish said information in a state indicating that the network user is out of coverage area, if the traffic is complete for this user was unsuccessful.

17. The device according to item 13, in which the mentioned network devices include a feature (10, 12) of the control status of the call network multimedia subsystem Internet Protocol (IMS).

18. A network server that is designed to generate messages that are routed to the user (40) network, and for routing messages are temporarily unavailable to the user (40) network when said user (40) network is again available, characterized in that

mentioned network series the er (60) has a capability

subscription service status event mentioned is not available the user (40) network in response to reception of the response generated by a network device (10, 12), indicating that the user (40) network is unreachable or not registered, and

routing mentioned message to the person you mentioned (40) network in response to receiving the notification generated by a network device (10, 12), when the condition mentioned user (40) of the network has changed to indicate the status when the said user (40) network is available again, or when referred to the user (40) network again registered.

19. The server b, which referred to a network server (60) is arranged to perform the above-mentioned subscription in response to the receipt of a message indicating that the user is unreachable or is not registered.

20. The server b or 19, in which the mentioned network server (60) is arranged to subscribe to the service event registration referred to a network user.

21. The server b, which referred to a network server (60) is arranged to update the mentioned subscription in response to the notified re-registration referred to a network user.

22. The server b, which referred to a network server (60) is what rorem exchange services multimedia messages (MMS).

23. A system for routing messages available to the user network containing a network server on p and the network device according to item 13.



 

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Message processing // 2369029

FIELD: information technology.

SUBSTANCE: invention relates to processing a message addressed to a client terminal. The method comprises stages on which a message, which is addressed to a client terminal, is received. The message contains information meant for a high level application, where the high level application is an application which is separate from a message exchange client. Option information, associated with the client terminal, is received and checked if it contains information on high level applications, which are supported by the client terminal, and action is taken in response to the checking stage.

EFFECT: client terminal contains a message exchange client, meant for processing messages.

33 cl, 6 dwg

FIELD: information technologies.

SUBSTANCE: radio communication method in code division multiple access system features the following: usage of the first code by user station is temporarily interrupted, and usage of the second code only is introduced, further usage of the first code is resumed depending on available transmission power which is at disposal for usage of the first code by user station. Network device for radio communications system contains facilities to receive messages transmitted using both the first and the second code, facility for determination of available transmission power.

EFFECT: keeping track of transmission conditions, using the first or the second transmission code depending on transmission power.

11 cl, 2 dwg

FIELD: physics; computer engineering.

SUBSTANCE: present invention includes an e-mail component and an identification request component. The e-mail component can receive e-mail messages and calculate associated probability that data of the e-mail message are spam. The identification request component sends an identification request to the e-mail message sender having the said probability greater than the first received value. The identification request component corrects the probability that the given e-mail message is spam at least partially based on the response to the identification request. The identification request can be an embedded code, a calculated identification request, an identification request requiring participation of a person, and/or micro-payment requirement.

EFFECT: invention provides detection of spam through identification requests.

31 cl, 13 dwg

FIELD: physics; communication.

SUBSTANCE: invention relates to exchange of messages. A system, terminal, method and carrier use a certificate of authorisation to grant a sender the authority to send a communication message to a recipient. The system for controlling reception of the message by the recipient includes a transmission terminal and reception terminal. The transmission terminal can send a communication message to the sender. The reception terminal can determine whether the communication message is cryptographically linked to the certificate of authorisation. Determination of whether a communication message is cryptographically linked to the certificate of authorisation can include determination of whether a communication message has been signed by the sender using a private encryption key.

EFFECT: receiver can quickly and easily determine whether to receive a message.

21 cl, 9 dwg

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