CN117119391A

CN117119391A - Short message processing method and device

Info

Publication number: CN117119391A
Application number: CN202210538274.0A
Authority: CN
Inventors: 谷尚铭; 张剑寅
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2023-11-24

Abstract

The embodiment of the application provides a method and a device for processing short messages, wherein the method comprises the following steps: after receiving the short message, performing NP query through the NPDB module, and determining a first operation, wherein the first operation comprises at least one of the following steps: determining the current subscription network of the called user, determining the number carrying and network transferring state of the called user, adding the routing number of the local network before the number of the called user or deleting the routing number before the number of the called user, inquiring the HLR or HSS to which the called user belongs, inquiring the local NP HLR or HSS, and inquiring the home province NP HLR or HSS of the called user; and sending the short message through the first operation.

Description

Short message processing method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a method and a device for processing short messages.

Background

The "number portability" refers to a service in which a mobile phone user changes the basic telecommunications carrier under subscription while the user number remains unchanged within the local telephone network. The implementation of 'number-carrying and network-transferring' in the whole country is a civil engineering with wide social influence and great social benefit. The range of the number-carrying and network-transferring is bidirectional carrying among basic telecom operation enterprises within the same local network range, and the number-carrying and network-transferring across the local network is not supported. The users carrying the number and turning the network comprise mobile phone users of three basic telecom operators, and network modes, including 2G, 3G, 4G, 5G and the like, are not distinguished.

After each operator provides the number-carrying network-transferring service, the subscription network of the mobile phone user cannot be judged only through the number segment. When the called party is a mobile telephone subscriber, a number portability database (Number Portability Database, NPDB) needs to be queried to determine the current subscription network of the called party and route. After the operator queries the NPDB, the internetwork should add a Routing Number (RN) before the called Number.

The number-carrying and network-to-point short message service encourages the adoption of an originating query scheme, i.e. the network of an originating operator queries the NPDB to determine the network of the operator currently subscribed by the user. Alternatively, a number owned network query scheme may be adopted, that is, after the called number owned network queries the NPDB to determine the current operator network subscribed by the user, a short message is sent to the operator network subscribed by the current user. Currently, both schemes are adopted by operators, no industry standard prescribes what mode is required to be adopted, but because the number possession network query scheme needs to rely on a number portability (Number Portability, NP) mobile switching center (Mobile Switching Center, MSC) for routing forwarding, and routing resources can be wasted due to number portability of a called user.

Disclosure of Invention

The embodiment of the application provides a short message processing method and a device, which solve the problems that the number owning network query scheme needs to rely on an NP MSC to carry out route forwarding and the routing resource is possibly wasted due to the number carrying network forwarding of a called user.

In a first aspect, a short message processing method is provided, applied to a short message center, where the short message center includes an NPDB module, and the method includes:

after receiving the short message, performing NP query through the NPDB module, and determining a first operation, wherein the first operation comprises at least one of the following steps: determining the current subscription network of the called user, determining the number carrying and network transferring state of the called user, adding the routing number of the local network before the number of the called user or deleting the routing number before the number of the called user, inquiring the HLR or HSS to which the called user belongs, inquiring the local NP HLR or HSS, and inquiring the home province NP HLR or HSS of the called user;

sending the short message through the first operation;

the short message center serves a first network, the first network is a calling subscriber subscription network, and the NPDB module stores subscriber number-carrying network-switching data.

Optionally, sending the short message through the first operation includes:

determining the current subscribed network of the called user as the first network;

inquiring the HLR or HSS to which the called user belongs, and sending the short message to the called user through the VMSC address returned by the HLR or HSS to which the called user belongs.

Optionally, sending the short message through the first operation includes:

determining that the called user is a subscriber transferring out of the first network carrying number;

and adding a routing number of the local network before the number of the called user, and sending the short message to the called user through a short message intercommunication gateway.

Optionally, sending the short message through the first operation includes:

determining that the called user is a user carrying a number and entering the first network;

and inquiring a local NP HLR or a Home Subscriber Server (HSS), and sending the short message to the called subscriber through a VMSC address returned by the local NP HLR or the Home Subscriber Server (HSS).

Optionally, sending the short message through the first operation includes:

determining that a current subscribed network of a called user is a second network, wherein the second network is different from the first network, and determining that the called user does not belong to a number-carrying network-transferring user;

Optionally, sending the short message through the first operation includes:

determining that the called user does not belong to a number-carrying network-transferring user;

Optionally, sending the short message through the first operation includes:

determining that the called user belongs to a number-carrying out user;

Optionally, sending the short message through the first operation includes:

determining that the called user belongs to a number-carrying transfer-in user;

and deleting the routing number before the number of the called user, inquiring a local NP HLR or HSS, and sending the short message to the called user through the VMSC address returned by the local NP HLR or the HSS.

Optionally, sending the short message through the first operation includes:

determining that the called user belongs to a number-carrying transfer-in user;

deleting the route number before the number of the called user, inquiring the NP HLR or HSS of the called home province, and sending the short message to the called user through the VMSC address returned by the NP HLR or HSS of the called home province.

In a second aspect, there is provided a short message processing apparatus applied to a short message center including an NPDB module, the apparatus comprising:

the determining module is used for performing NP query through the NPDB module after receiving the short message, and determining a first operation, wherein the first operation comprises at least one of the following steps: determining the current subscription network of the called user, determining the number carrying and network transferring state of the called user, adding the routing number of the local network before the number of the called user or deleting the routing number before the number of the called user, inquiring the HLR or HSS to which the called user belongs, inquiring the local NP HLR or HSS, and inquiring the home province NP HLR or HSS of the called user;

the sending module is used for sending the short message through the first operation;

In a third aspect, there is provided a communication device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first aspect.

In a fourth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the first aspect.

In the embodiment of the application, the NPDB module is added in the short message center to store the user-carried data, if the called user is carried out from the number-owned network, the calling short message center can carry out NP inquiry, and the short message is directly routed to the current contracted network of the called user, thereby reducing unnecessary routing, saving network resources, and the short message routing and forwarding function of the carried user is completed by the short message center without depending on NP MSC for forwarding, and simplifying the network and saving routing.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a diagram of a number owning network query;

fig. 2 is a flowchart of a short message processing method according to an embodiment of the present application;

fig. 3 is a diagram of a peer-to-peer sms (point-to-point sms) forwarding network originating query system architecture according to an embodiment of the present application;

fig. 4 is a schematic diagram of an originating query network user sending a short message to a carrying user according to an embodiment of the present application;

fig. 5 is a schematic diagram of an originating query network user sending a short message to a carrying user according to an embodiment of the present application;

fig. 6 is a schematic diagram of a number home query network user sending a short message to an originating query network carry-out user according to an embodiment of the present application;

fig. 7 is a schematic diagram of a number home query network user sending a short message to an originating query network carry-in user according to an embodiment of the present application;

fig. 8 is a schematic diagram of a short message processing apparatus according to an embodiment of the present application;

fig. 9 is a schematic diagram of a communication device provided by an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means at least one of the connected objects, e.g., a and/or B, meaning that it includes a single a, a single B, and that there are three cases of a and B.

In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the prior art, if a calling number-carrying network-to-point short message adopts a number-carrying network query scheme, under the condition that a called user carries out number-carrying network-to-point short message from a number-carrying network, the calling user directly sends the short message to the number-carrying network without querying a number-carrying network-to-point database, the number-carrying network queries the number-carrying network-to-point database, the current subscription network of the called user is determined, and a route is selected according to the current subscription network, so that routing resources are wasted to a certain extent.

If A, B networks all adopt the number-owned network query scheme, if a user takes a call from the a network to the B network, the existing routing scheme can refer to fig. 1 when the user belonging to the B network calls the ported user.

In the prior art, an NP MSC is used as a mobile switching center (Visit Mobile Switching Center, VMSC) for virtual access of a ported subscriber to register with a home subscriber server (Home Subscriber Server, HSS)/home location register (Home Location Register, HLR) to which the subscriber belongs, and adds a routing code RN before a called number according to the ported condition of the subscriber, thereby completing the short message routing forwarding function of the ported subscriber.

Referring to fig. 2, an embodiment of the present application provides a short message processing method applied to a short message center, the short message center including an NPDB module, the method including:

step 201: after receiving the short message, performing NP query through the NPDB module, and determining a first operation, wherein the first operation comprises at least one of the following steps: determining the current subscription network of the called user, determining the number carrying and network transferring state of the called user, adding the routing number of the local network before the number of the called user or deleting the routing number before the number of the called user, inquiring the HLR or HSS to which the called user belongs, inquiring the local NP HLR or HSS, and inquiring the home province NP HLR or HSS of the called user;

step 202: sending the short message through the first operation;

In one embodiment of the present application, the sending the short message through the first operation includes:

determining that the called user belongs to a number-carrying out user;

determining that the called user belongs to a number-carrying transfer-in user;

Referring to fig. 3, the number-carrying forwarding query system of the point-to-point short message service is composed of a centralized service management system (Central Service Management System, CSMS), a service management system (service management system, SMS), a local service management system (Local Service Management System, LSMS), a short message center, an NP HLR, an HLR, a short message interworking gateway, and the like, and the main functions of each entity are summarized as follows:

1) The CSMS is constructed by the industrial signal department, is a management center of national number-carrying and network-transferring service, processes related service flows of number-carrying and network-transferring, is responsible for auditing and management of the whole number-carrying and network-transferring flow, and stores the most authoritative total NPDB.

2) SMS integrates a full NPDB, data is obtained from the CSMS and is responsible for distribution within the home network.

2) The LSMS establishes and manages a local NPDB at each operator side, synchronizes with the centralized database, and downloads the data to the database of the network element equipment in the local network. When the number-carrying network-transferring data is effective, a CSMS notification is received, and the data is synchronized to the LNPDB.

3) The short message center is used as a short message service processing system and has the main functions of submitting, storing and forwarding short messages. The short message center comprises an NPDB module for storing user-carried data.

4) The HLR supports the preservation of outgoing subscriber information and other non-outgoing subscriber data remain unchanged.

5) The NP HLR (or described as the ported HLR) is used to store ported subscriber data, process routing queries for foreign network numbers, and respond differently depending on the subscriber's different ported state.

6) The short message intercommunication gateway is connected with different operators to meet the requirements of short message service intercommunication among different operators.

The following describes the flow of the point-to-point short message service number-carrying forwarding network sender query with reference to fig. 4-7.

In the embodiment of the application, the short message center integrates the NPDB module, and for the point-to-point short message service, the NPDB module is inquired by the short message center to determine the current subscription network of the receiver user. The following is described:

1. when the calling party inquires the network user for the originating party:

1) And sending a short message to the home network user, after the calling home short message center performs NP inquiry, inquiring the number home HLR, returning the VMSC ID by the home HLR, and normally issuing the short message.

2) Sending a short message to the network carrying-out user, adding an RN before a called number after the short message center makes NP inquiry, and sending the short message to an interworking gateway for network-out; after receiving the short message receipt, the interworking gateway sends the receipt to the calling short message center.

3) And sending a short message to the network carrying user, and after the short message center makes NP inquiry, inquiring NP HLR, acquiring VMSC address and issuing.

4) After NP inquiry is made by the short message center, RN is added before the called number, the short message is sent to the calling home province short message intercommunication gateway to directly go out of the network and is dredged by the external network.

2. When the calling party is the number attribution inquiring network user:

1) Sending a short message to a user which is not carried by the sender inquiring network, accessing the short message by the interworking gateway, then sending the short message to a calling attribution provincial short message center by the interworking gateway, inquiring NPDB by the short message center, inquiring number attribution HLR by the short message center, returning VMSC ID by the attribution HLR, leading the VMSC ID to point to normal VMSC, and normally issuing the short message.

2) And sending a short message to a user carried out of the sender query network, entering the network by the calling home province intercommunication gateway, then sending the short message to a calling home province short message center by the calling home province intercommunication gateway, finding out that the user is carried out after the short message center queries the NPDB, adding an RN (radio network controller) in front of a called number by the short message center, and sending the short message to the called home province intercommunication gateway for network outgoing.

3) Sending a short message to an originating query network carrying user (carried in by a number attribution query network), wherein the short message is accessed to the network by a called attribution province interworking gateway, the called attribution province interworking gateway judges that a called number contains a local network RN, the RN is reserved to send to a called attribution province short message center, the short message center removes the RN, queries a local NP HLR/HSS, and returns a VMSC ID to the NP HLR/HSS, the VMSC ID points to a normal VMSC, and the short message is normally sent.

4) Sending a short message to an originating query network carrying user (carried in by the originating query network), wherein the short message is accessed to the network by a calling home province interworking gateway, the calling home province interworking gateway judges that a called number contains a local network RN, the RN is reserved to send to a calling home province short message center, the short message center removes the RN, queries a called home province NP HLR/HSS, the NP HLR/HSS returns a VMSC ID, the VMSC ID points to a normal VMSC, and the short message is normally sent.

The following describes a point-to-point short message service number-carrying forwarding network sender query procedure according to a specific embodiment.

Example 1: the calling party inquires the network user for the originating party and sends a short message to the network carrying-out user.

Referring to fig. 4, a flow of sending a short message from an originating querying network user to a carrying user is described.

1) The calling MSC sends the short message to a calling attribution short message center;

2) The short message center judges that the called party is the number carried out by the local network after being inquired by NP, and the short message is transferred to the intercommunication gateway after RN (routing code) is added;

3) SMG (short message intercommunication gateway) sends short message out of network;

4) After the receiving end network finishes delivery, sending the short message receipt back to the home network SMG;

5) The SMG sends the receipt to the short message center to inform the short message delivery condition.

Example 2: the calling party inquires the network user for the originating party and sends a short message to the network carrying-in user.

Referring to fig. 5, a flow of sending a short message to a carrying user by an originating querying network user is described.

2) After the short message center inquires through NP, judging that the called party is the home network carry-in number, and sending SRI_FOR_SM inquiry route to NP HLR;

3) The NP HLR returns VMSC ID of the visiting MSC of the user;

4) The short message center sends the short message to the MSC visited by the user to send the short message, and then the MSC informs the short message center of the sending result.

Example 3: the calling party is the number attribution inquiry network user, and sends the short message to the sending inquiry network carry-out user

Assuming that the originating query network user brings out to the number home query network, the number home query network sends short messages to the user, all of which are connected to the network from the interworking gateway.

Referring to fig. 6, a process of sending a short message by a subscriber of an introduction number home query network to a subscriber of an originating query network.

1) The short message is sent from the number attribution inquiry network intercommunication gateway (SMG) to the originating inquiry network intercommunication gateway (SMG);

2) The sending end inquires that the network SMG receives the destination address without RN and sends the destination address to the short message center;

3) The short message center judges that the called party is the number carried out by the local network after being inquired by NP, and the short message is transferred to the intercommunication gateway after RN is added;

4) The SMG sends the short message out of the network;

5) After the number attribution inquiry network completes the delivery, the short message receipt is sent back to the SMG of the local network;

6) The SMG sends the receipt to the short message center to inform the short message delivery condition.

Example 4: the calling party is the number attribution inquiry network user, and sends the short message to the sending inquiry network carry-in user.

According to the current internetworking routing principle, the number attribution inquiry network sends a short message carrying in the sender inquiry network user, and the short message is accessed from the local network.

Referring to fig. 7, a process flow of sending a short message by a subscriber of an introduction number home query network to an originating query network carry-in subscriber is described.

1) After the number attribution inquiry network inquires and adds RN before the called number, the short message is sent to the originating inquiry network intercommunication gateway SMG;

2) The SMG judges that the short message is carried in according to the destination address with the RN of the local network and routes the short message to a local short message center;

3) The short message center removes the RN before the called number and sends SRI_FOR_SMS message to NP HLR/HSS to inquire route;

4) The NP HLR/HSS searches the user data and returns the normal MSCID to the short message center;

5) The short message center sends the short message to the MSC visited by the user for issuing, and then the MSC informs the short message center of the issuing result;

6) The short message center sends the receipt to the SMG;

7) The SMG sends the response piece back to the home number to query the network gateway.

Referring to fig. 8, an embodiment of the present application provides a short message processing apparatus applied to a short message center including an NPDB module, the apparatus 800 including:

a determining module 801, configured to perform NP query by the NPDB module after receiving the short message, determine a first operation, where the first operation includes at least one of: determining the current subscription network of the called user, determining the number carrying and network transferring state of the called user, adding the routing number of the local network before the number of the called user or deleting the routing number before the number of the called user, inquiring the HLR or HSS to which the called user belongs, inquiring the local NP HLR or HSS, and inquiring the home province NP HLR or HSS of the called user;

a sending module 802, configured to send the short message through the first operation;

In one embodiment of the present application, the sending module 802 is further configured to:

determining that the called user belongs to a number-carrying out user;

determining that the called user belongs to a number-carrying transfer-in user;

The device provided by the embodiment of the application can realize each process realized by the embodiment of the method shown in fig. 2 and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

As shown in fig. 9, an embodiment of the present application further provides a communication device 900, including a processor 901, a memory 902, and a program or an instruction stored in the memory 902 and capable of running on the processor 1001, where the program or the instruction is executed by the processor 901 to implement the respective processes of the method embodiment of fig. 2, and achieve the same technical effects. In order to avoid repetition, a description thereof is omitted.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the method shown in fig. 2, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The steps of a method or algorithm described in connection with the present disclosure may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable disk, a read-only optical disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be carried in a core network interface device. The processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present application in further detail, and are not to be construed as limiting the scope of the application, but are merely intended to cover any modifications, equivalents, improvements, etc. based on the teachings of the application.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the application may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims and the equivalents thereof, the present application is also intended to include such modifications and variations.

Claims

1. A short message processing method applied to a short message center, characterized in that the short message center comprises a number portability database NPDB module, the method comprising:

after receiving the short message, carrying out number portability NP query through the NPDB module, and determining a first operation, wherein the first operation comprises at least one of the following steps: determining the current subscription network of the called user, determining the number carrying and network transferring state of the called user, adding a routing number of a local network in front of the number of the called user or deleting the routing number in front of the number of the called user, inquiring a Home Location Register (HLR) or a home subscription user server (HSS) to which the called user belongs, inquiring a local NP (network node) HLR or a Home Subscriber Server (HSS), and inquiring a home province NP (network node) HLR or a Home Subscriber Server (HSS) of the called user;

sending the short message through the first operation;

the short message center serves a first network, and the first network signs up for a calling user.

2. The method of claim 1, wherein transmitting the short message through the first operation comprises:

inquiring the HLR or HSS to which the called user belongs, and sending the short message to the called user through the virtual access mobile switching center VMSC address returned by the HLR or HSS to which the called user belongs.

3. The method of claim 1, wherein transmitting the short message through the first operation comprises:

determining that the called user is a subscriber transferring out of the first network number;

4. The method of claim 1, wherein transmitting the short message through the first operation comprises:

5. The method of claim 1, wherein transmitting the short message through the first operation comprises:

6. The method of claim 1, wherein transmitting the short message through the first operation comprises:

7. The method of claim 1, wherein transmitting the short message through the first operation comprises:

determining that the called user belongs to a number-carrying out user;

8. The method of claim 1, wherein transmitting the short message through the first operation comprises:

determining that the called user belongs to a number-carrying transfer-in user;

9. The method of claim 1, wherein transmitting the short message through the first operation comprises:

determining that the called user belongs to a number-carrying transfer-in user;

and deleting the routing number before the number of the called user, inquiring the NP HLR or the HSS of the called home province, and sending the short message to the called user through the VMSC address returned by the NP HLR or the HSS of the called home province.

10. A short message processing apparatus for use in a short message center, the short message center comprising an NPDB module, the apparatus comprising:

11. A communication device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which program or instruction when executed by the processor implements the steps of the method according to any of claims 1 to 9.

12. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the method according to any of claims 1 to 9.