WO2011079531A1

WO2011079531A1 - Method and device for providing information used for accessing service for crossing domain service access

Info

Publication number: WO2011079531A1
Application number: PCT/CN2010/070007
Authority: WO
Inventors: 张青山; 马松伟; 宾梵翔
Original assignee: 上海贝尔股份有限公司; 阿尔卡特朗讯公司
Priority date: 2010-01-04
Filing date: 2010-01-04
Publication date: 2011-07-07
Also published as: CN102696276A; WO2011079531A8

Abstract

A method, a device, a system and the corresponding computer program product for providing information used for accessing service for crossing domain service access are disclosed. The method includes the following steps: a user equipment (UE) agent subscribes the service provided by at least one other domain, from the domain the UE agent belongs to; the information for accessing the subscribed service is uploaded to said UE agent.

Description

Method and apparatus for providing access to services for access to cross-domain services

The present invention relates to network communications and, in particular, to a method, apparatus, system and corresponding computer program product for providing information for accessing services for access to cross-domain services. Background technique

With the development of network technology, a wide variety of network applications bring convenience to users. However, because different network domains are managed by different operators, this poses a hindrance to users' cross-domain access services. When a user in one network domain wants to access a service provided by another network domain, the process of accessing the service or the process of verifying the user is complicated, and even such an interdomain service is not available to the user. .

One network architecture that provides inter-domain services is a femtocell architecture. In the femtocell network architecture, users can access various services and applications provided by the fixed network through the mobile network, such as network services (IPTV), e-mail services, online shopping services, Internet-related services, and the like. FIG. 1 exemplarily shows an exemplary nanocell network architecture. As shown in FIG. 1, the user equipment UE in the coverage of the Home Station Station (HBSR) accesses the mobile core network through a fixed network backhaul. Specifically, a secure tunnel (such as an IPSec tunnel) is established between the HBSR and the femto gateway (Femto GW), and the tunnel starts from the HBSR, and the access network passes through the access network/aggregation network and the broadband network gateway (BNG). , Broadband Network Gateway), finally the nano gateway) The UE accesses the mobile core network through the tunnel. In order to be able to provide a fixed network service, such as an IPTV service, to the UE within the coverage of the HBSR, the HBSR first subscribes to the relevant IPTV system of the fixed network, and pre-configures the information required to access the subscribed service in the HBSR. For example, before the HBSR is shipped, or when the HBSR is purchased. When the UE wants to access the IPTV service in the fixed network, it accesses the IPTV system in the fixed network (for example, a network service provider (NSP) network) through the mobile core network via the HBSR. In this case, the fixed network (access/aggregation network, IP network, etc.) is Used as a transmission channel for backhauling traffic between a femtocell (e.g., HBSR) and a mobile core network. As shown in FIG. 1, the round-trip path is required to provide the IPTV service to be accessed to the user equipment, that is, the service is provided from the fixed network to the mobile core network, and then through the tunnel established between the Femto gateway and the HBSR, by the mobile core. The network provides the service to the user equipment via a backhaul of the fixed network.

Obviously, the scheme for providing inter-domain services shown in Figure 1 is less efficient. First, it wastes the bandwidth of the mobile core network and the fixed network. Even in the case where it consumes excessive bandwidth, the mobile core network has to prohibit the provision of the inter-domain service to the user equipment. Second, it also creates unnecessary workload for the mobile core network, especially the Femto gateway at the edge of the mobile core network, because it is responsible for encapsulating the inter-domain service into, for example, an IPSec tunnel before it is passed back to the HBSR. Moreover, since the unicast IP tunnel is used for backhaul, the multicast of the IPTV service to multiple HBSRs cannot be supported. This indicates that the current solution cannot meet the demand for providing large-scale IPTV services across mobile domains to mobile users.

Furthermore, it is well known that users in different network domains are only managed and authenticated by the operator or manager or service provider of the domain. In other words, mobile operators only manage mobile users and their access to mobile services, such as mobile voice services, GPRS services, and the like. Fixed operators only manage fixed users and their access to fixed services (such as IPTV services, email services, online shopping services, etc.). For the network architecture shown in Figure 1, the femtocell is deployed by the mobile operator and the IPTV service is provided by the fixed carrier (or IPTV service provider). Before the ICP service is accessed by the femtocell, it needs to be authenticated by the fixed operator to determine whether it is a legitimate IPTV subscriber. It can be seen that the existing solution is not a preferred solution because it does not satisfy the need for different operators/managers to keep their respective user information confidential. Summary of the invention

The present invention is directed to solving or at least alleviating one or more of the above problems.

According to an aspect of the present invention, a method for providing an inter-domain service is provided, comprising: a user equipment agent subscribing a service provided by at least one other domain from a domain to which it belongs; The user equipment agent obtains information for accessing the subscribed service from its own domain; according to the obtained information, the user equipment agent accesses the subscribed service directly through the at least one other domain without going through the domain to which it belongs.

Preferably, the domain belongs to the mobile network domain, the other domain is the fixed network domain, and the user equipment agent is the cellular node.

Optionally, the J! service is at least one of a network service (IPTV), an email service, an online shopping service, and an internet-related service.

Optionally, a service level agreement is established between the domain to which the user equipment agent belongs and other domains. Optionally, the information used to access the service includes verification information.

Optionally, the verification information includes at least one of an identifier of a service subscribed by the user equipment agent, a user ID (User ID) used by the user equipment agent to access the subscribed service, and a certificate (Credential).

Optionally, the user equipment agent unicasts or multicasts the subscribed service to the at least one user device based on the request of the user device or based on the need.

Optionally, the service from its proxy device is received after the user equipment obtains the relevant network resources.

Optionally, after the user equipment agent is authenticated by the domain to which it belongs, the domain to which it belongs is automatically loaded with information for accessing the subscribed service.

According to another aspect of the present invention, an apparatus for providing an inter-domain service is provided, comprising: a service subscription unit, configured to subscribe to a service provided by at least one other domain from a domain to which it belongs; an information acquisition unit, from which it belongs The domain obtains information for accessing the service;

And a service access unit, configured to access the subscribed service directly through the at least one other domain without passing through the domain to which it belongs according to the obtained information.

Optionally, the service access unit unicasts or multicasts the subscribed service to at least one user equipment based on a request of the user equipment.

Optionally, after the device is authenticated by its domain, the information obtaining unit is automatically loaded with information for accessing the subscribed service.

Optionally, the device is a femtocell node. According to another aspect of the present invention, an apparatus for providing an inter-domain service is provided, including: a service subscription unit, configured to subscribe to a service provided by at least one other domain and obtain information required to access the service;

An information providing unit, configured to provide information for accessing the corresponding service to a user equipment agent in a domain to which the network node that subscribes to the corresponding service belongs, so that the user equipment agent directly accesses the at least one other domain without going through the domain to which the user equipment belongs The service that is subscribed to.

Optionally, in the case where the user equipment agent passes the authentication within the domain to which it belongs, the information providing unit automatically provides the information to the user equipment agent.

According to another aspect of the present invention, a system for providing inter-domain services is provided, comprising the apparatus as described above.

According to another aspect of the present invention, a computer program product is provided, comprising program code for performing the aforementioned method, apparatus or system.

According to another aspect of the present invention, a method for providing information for accessing a service for access to a cross-domain service is provided, including:

The user equipment agent subscribes to the service provided by at least one other domain from its own domain; loads the user equipment agent with information for accessing the service to which it subscribes.

Preferably, if the user equipment agent passes the authentication of the domain to which it belongs, the user equipment agent is automatically loaded with information for accessing the service to which it subscribes.

Optionally, the user equipment agent is loaded with information for accessing the service it is subscribed to before it is produced or sold.

Optionally, through the loaded information, the user equipment agent can directly service other domains to access the services it subscribes to.

Optionally, the information is loaded by a network node within the domain to which the user equipment agent belongs, such as a device, server, HLR/AAA server or the like that manages user profile information.

Optionally, the user equipment agent may access the service provided by the domain directly through the at least one other domain according to the acquired information according to the acquired information.

Optionally, the information includes verification information.

The verification information is generated by the other domain providing the service, and is generated with the user equipment The domain to which it belongs is associated.

Optionally, the verification information is related to a domain to which the user equipment agent belongs, and is not associated with the user equipment agent. Specifically, the verification information is generated by the other domain based on the user equipment agent's subscription to the service from its domain, and is provided to the domain to which the user equipment agent belongs.

According to another aspect of the present invention, an apparatus for providing access to a service for accessing a cross-domain service includes:

a service subscription providing unit, configured to subscribe to a service provided by at least one other domain and obtain information for accessing the service;

And an information providing unit, configured to load, to the user equipment agent, information for accessing a service subscribed to by the user equipment.

Alternatively, if the user equipment agent passes the authentication of the domain to which it belongs, the information providing unit automatically loads the user equipment agent with information for accessing the service to which it subscribes.

Optionally, the information providing unit loads information on the services to which it subscribes before the user equipment agent is produced or sold.

Alternatively, through the loaded information for accessing the service to which it is subscribed, the user equipment agent can directly authenticate the service with other domains in order to access the service to which it subscribes.

Optionally, the service subscription providing unit is included in an operation support system.

Optionally, the information providing unit is included in any one of the following: a gateway, a femtocell gateway in a mobile network domain, a user management device, a nanocellular management system/platform.

Optionally, the service subscription providing unit subscribes to the service based on a request of the user equipment agent, or subscribes to the service based on statistical data.

The statistical data is, for example, the extent to which the service is welcomed/received by the user equipment as reflected by parameters such as the frequency and number of times the service is accessed.

Alternatively, such statistics can be obtained from related network devices, such as HBSR. Optionally, the authentication is performed by a gateway, preferably a femtocell gateway in the mobile network domain.

According to another aspect of the present invention, an apparatus for accessing a cross-domain service is provided, including: a service subscription unit, configured to subscribe to a service provided by at least one other domain from a domain to which it belongs; The information obtaining unit, after being authenticated by its own domain, is automatically loaded with information for the device to access the service to which it subscribes.

Optionally, it further includes a service access unit for performing authentication of the service directly with other domains to access the service subscribed to by the loaded information for accessing the service to which it subscribes.

Optionally, the device may access the service provided by the domain directly through the at least one other domain without going through the domain according to the acquired information.

Optionally, the device is a femtocell base station.

According to another aspect of the present invention, there is provided a system for providing access to a cross-domain service, comprising any of the aforementioned devices.

According to another aspect of the present invention, a computer program product is provided comprising program code for performing the aforementioned method, apparatus, network node or system.

In accordance with an exemplary embodiment of the present invention, it provides an efficient solution for providing inter-domain services to related user devices. In particular, the IPTV service, the Internet service, and the like in the fixed network are provided to the mobile network, preferably the user equipment under the Femtocell architecture. Through such a solution, the burden on the network in the existing implementation mode is alleviated, which not only enriches the services that the user can access, but also expands the scope of service provision. DRAWINGS

The above as well as other features and advantages of the present invention will be better understood from the description of the appended claims. among them:

Figure 1 exemplarily shows a network architecture of a millicell;

FIG. 2 exemplarily shows a network architecture in which an exemplary embodiment according to the present invention is applicable; FIG. 3 exemplarily shows a structure of a femtocell base station according to an exemplary embodiment of the present invention; FIG. 4 exemplarily shows A structure of a network element (OSS, Operation Support System) in a mobile network according to an exemplary embodiment of the present invention;

FIG. 5 exemplarily shows a flowchart of a method for a user agent device to access an inter-domain service according to an exemplary embodiment of the present invention; FIG. FIG. 6 exemplarily shows a flow chart of a method for a user equipment to access an inter-domain service through its user equipment agent, according to an exemplary embodiment of the present invention. detailed description

The present invention provides a solution for providing inter-domain services. In the following description, the IPTV service and the Femtocell network architecture will be described as an example. However, it will be understood by those skilled in the art that the present invention is not limited thereto and can be applied to any inter-domain service. Here, a network domain refers to a network area managed by a different carrier or service provider. Therefore, it is apparent that the present invention can be applied to any other network domain in addition to the mobile network and the fixed network, thereby providing users with inter-domain services.

In an exemplary embodiment of the present invention, a fixed carrier (IPTV service provider) composes an IPTV service (IPTV channel identification, service summary or profile, etc.) that can be provided to a mobile user, and provides it to the mobile Operator. Thus, the HBSR within the mobile network can subscribe to the relevant IPTV service from its mobile operator and obtain information for accessing the subscribed service, such as service authentication information, an introduction to the subscribed IPTV service, and the like. As shown in FIG. 2, when the user equipment UE in the coverage of the HBSR wants to access an IPTV service subscribed by the HBSR, it may send a request to the HBSR, and bypass the HBSR as a proxy to bypass the mobile core network as shown in FIG. Access the IPTV service directly through a fixed network. In this case, the HBSR can use the acquired information for accessing the subscribed service to access the IPTV system in the NSP network, and then transmit the corresponding service to the UE.

FIG. 3 exemplarily shows a structure of a femtocell base station (HHRSR) according to an exemplary embodiment of the present invention. As shown in FIG. 3, it includes a service subscription unit, an information acquisition unit, and a service access unit. The service subscription unit is configured to subscribe to a service provided by at least one other domain (for example, a fixed network) from a network domain (for example, a mobile network) to which the HBSR belongs; the information acquiring unit is configured to acquire, for accessing, a location from the mobile network. The service access unit is configured to access the subscribed service directly through the fixed network without going through the mobile network according to the obtained information. Here, the service access unit may access the requested IPTV service upon receiving a request from the UE. Or alternatively, it may also access the relevant IPTV service according to the needs of the stored past users, such as the UE accessing a specific service, as needed. Information such as time, frequency, duration of access, etc.; which services are more popular with users, etc., and access some IPTV services in advance, so that services can be provided to users more conveniently in the next period of time. Here, the service subscription unit may obtain introduction information about the IPTV service from the mobile network, and provide the information to the user to subscribe to the IPTV service according to the user's preference. Optionally, the service access unit may also apply for the radio resource of the domain (for example, the mobile network) to which the UE belongs when receiving the request for accessing the service of the UE, so as to access the requested service.

FIG. 4 exemplarily shows the structure of a device in a mobile core network according to an exemplary embodiment of the present invention. As shown in FIG. 4, the device includes a service subscription providing unit and an information providing unit. The service subscription providing unit accepts the subscription of the IPTV service by the HBSR in the mobile network on the one hand, and subscribes to the service in the IPTV system in the fixed network on the other hand, and acquires information for accessing the subscribed service. Specifically, the fixed network may send the IPTV service that can be provided to the mobile user to the service subscription providing unit to facilitate the selective subscription, or the service subscription providing unit may subscribe to the service of the corresponding IPTV system based on the need. For the service subscription providing unit, it can subscribe to the service provided by the IPTV system based on the needs of the HBSR for the service, such as the selection of the HBSR by receiving/browsing the subscribeable service. Alternatively, the service subscription providing unit may first subscribe to the service, and then provide/display the subscribed service to the HBSR, so that the HBSR subscribes to the service. In the latter, it is apparent that the service subscription providing unit can also subscribe to the additional IPTV service based on the needs of the user. In addition, the information providing unit is configured to provide the obtained information for accessing the service subscribed by the HBSR to the HBSR subscribed to the corresponding service, so that the HBSR can directly access the IPTV service through the fixed network without going through the mobile network. Here, the information providing unit may provide authentication information required for the HBSR to access the IPTV service, and may also provide introduction information about the IPTV service, and if necessary, may provide information about the preference of the user equipment, the record of accessing the IPTV service, or statistical information. Alternatively, the device may be implemented as an OSS (Operation Support System), in which case the information providing unit may be via one of other devices in the network, such as an HLR, an FMS, a femtocell gateway, and the like. Or multiple to provide the information. Or the service subscription providing unit can be implemented in the OSS, and the information providing unit is implemented in the HLR, FMS, nano gateway and other network devices.

An exemplary structure of the related device is given above. Here, for the sake of simplicity, only the structure related to the present invention is shown. However, those skilled in the art should understand that other functions, or other operations, may be implemented in the above devices according to specific application requirements.

Hereinafter, the scheme of the exemplary embodiment of the present invention will be explained in more detail in conjunction with the operational flow.

FIG. 5 exemplarily shows a flow chart of a method for a user agent device to access a service between different domains according to an exemplary embodiment of the present invention. Here, the HBSR acts as a proxy for the UE to access the IPTV service. In step 501 of FIG. 5, the fixed network provides information about the IPTV service available to the mobile network user to the mobile network, for example, to the OSS in the mobile network by the OSS in the fixed network. Specifically, it can be provided to the service subscription providing unit shown in FIG. 3 in the OSS. In step 502, the HBSR can subscribe to the IPTV service. In step 503, the service subscription providing unit first notifies the other party in the fixed management domain that the OSS in the fixed network has a subscription to the IPTV service, for example, sends an "IPTV service subscription request". In step 504, the OSS in the fixed network domain creates a related user profile for the new subscription (specifically, in this example may be an IPTV profile), which may include an identifier of the subscribed IPTV service, The user identification or the like may optionally include any combination of service certificate, user level, QoS, etc., and then return the user profile to the service subscription providing unit in the mobile network domain. Further, in step 505, the OSS also provides the created user profile to the IPTV system for use in accessing the IPTV system. In subsequent steps 506, 508, the information providing unit in the OSS provides the obtained user profile information to the HBSR (if the above-mentioned service subscription providing unit and the information providing unit are located at different positions, that is, the above two units are separated , the information may be provided to the information providing unit by the service subscription providing unit in the process. First, the user profile information is stored in the HLR (step 506). Then, after the HBSR performs the mobile network to connect to the mobile network (step 507), the mobile network checks whether the HBSR subscribes to the IPTV service, and in the case of subscribing to the IPTV service, via the HLR, FMS (Femto Management System, Responsible for HBSR configuration) Provide the relevant user profile to the HBSR (step 508). For example, the user profile information is first stored in the FMS and then provided to the HBSR, or It is provided directly to the HBSR. Here, optionally, the FMS reuses the automatic configuration process (for example, using the client device WAN Management Protocol defined in the Broadband Forum TR-069) to configure the IPTV service subscribed by the HBSR. For example, the access of the IPTV service, the loading of the IPTV authentication information to the HBSR, and the like for accessing the subscribed service. In step 509, based on the obtained information, the HBSR attempts to access the IPTV service, specifically, to connect to the IPTV system and perform related verification. After passing the it^it, in step 510, the HBSR acts as a proxy for the user equipment to access the subscribed IPTV service.

In step 503 of the above method, since the OSS in the mobile network hides the information of the HBS from the OSS in its fixed network, the user information in the mobile network is hidden from the fixed network, so that the information in the mobile network is compared. Good protection. In particular, the process of steps 506-508, which proposes a new method of providing a user equipment agent HBSR with a user profile required to access the IPTV service. That is, each time the HBSR passes through the mobile network, the information providing unit can automatically provide the user profile to the HBSR according to the HBSR service subscription situation. The advantage of this is that the profile information maintained by the HBSR can be updated in time based on the change of the subscription information, thereby providing a more convenient service for the user equipment. Wherein, the verification mentioned above may be performed by a nano gateway or a dedicated/non-dedicated related authentication device. Moreover, it is to be understood that the above three steps can be changed in accordance with the idea of the present invention, whether it is an increase or decrease of steps or a sequence of steps. For example, step 506 may be omitted as the network is deployed, and in step 508, information is provided directly to the HBSR by the information providing unit in the OSS; or step 507 may be placed before step 506, and so on.

It should be noted that the processes of steps 506-508 above are not necessary for providing a solution for inter-domain services. There are also many alternatives. For example, it is not a flexible subscription based on HBSR, or it does not automatically load information for accessing the service it subscribes to after the HBSR passes the authentication of its domain, but for example, before the HBSR leaves the factory or when it is sold, it is passed. The user profile of the service related to the OSS subscription of the mobile network is configured in the HBSR. In this case, the HBSR can perform the verification process with the IPTV system by using the configured information when needed, without performing the operations of the above steps 506-508. FIG. 6 exemplarily shows a flow chart of a method for a user equipment to access an inter-domain service through its proxy device, according to an exemplary embodiment of the present invention. In step 601, the user equipment is connected to the HBSR, (in this step, the user equipment can access the domain network through the authentication of the domain to which it belongs). In this step, the UE may also actively request the HBSR to subscribe to an IPTV service, and the HBSR serves as a proxy to subscribe to the IPTV service provided by the fixed network from the OSS in the mobile network. At step 602, when the UE wants to access the IPTV service, a request can be made to the mobile network through the HBSR to create a Radio Access Bearer (RAB) for accessing the IPTV service on the HBSR. After obtaining the relevant radio resources, in step 603, the IPTV client on the UE performs an EPG acquisition process with the virtual set top box in the HBSR, and in step 604 sends a request to access the IPTV media. The HBSR in turn issues a request to the IPTV system to access the IPTV media (step 605), and then receives the media stream from the IPTV system (step 606) and forwards it to the UE (step 607).

Here, the UE is configured with an IPTV client to access the IPTV service. Preferably, the HBSR is configured with a virtual set top box. However, the above virtual set top box is not necessary for HBSR as long as the HBSR can distinguish the service and provide the service to the corresponding user equipment. The scheme in which the media stream is forwarded to the UE. However, optionally, the HBSR may also access and store the IPTV service in advance, and then notify the UE based on the UE's request or when needed to provide relevant information to the user equipment. Here, the information provided by the HBSR can be either unicast or multicast, broadcast, or the like. It can be seen that those skilled in the art can flexibly modify, delete or merge the steps shown in FIG. 6.

Preferably, a service level agreement (SLA) is established between the mobile network and the fixed network to better provide the fixed network deployed IPTV service to the mobile network's femtocell users.

Although Figures 5 and 6 illustrate a mobile core network including network elements such as Femto Gateway, FMS, HLR/AAA, OSS. SGSN, GGSN, and the like. However, those skilled in the art will appreciate that the above described network environment is exemplary. Depending on the network environment, the specific application needs, and the specifications/standards/protocols on which the application is based, it may have a different structure. Whether it is an existing network environment, With the future network environment of the network, the solution of the present invention is still applicable as long as it does not violate the spirit of the present invention.

The above provides a scheme for directly providing an IPTV service originating from a fixed network to a femtocell without going through (circumventing) the mobile core network. Among them, the HBSR is like an IPTV system in a mobile network for users in its coverage, and it is like a set-top box for accessing an IPTV service for an IPTV system in a fixed network. Moreover, since the HBSR subscribes to the service in the fixed network from the mobile network and automatically loads the information for accessing the service to the HBSR, the user information in the mobile network is well hidden for the fixed network.

Although IPTV is exemplified above as an example of inter-domain services across a typical administrative domain, those skilled in the art will readily appreciate that the present invention is also applicable to providing various domains such as email services, online shopping services, Internet-related services, and the like. Service.

It will be readily understood by those skilled in the art that the above-mentioned methods and apparatus can be implemented by software, or by hardware, or a combination of software and hardware. And the devices mentioned may be located on separate physical nodes or on separate physical nodes. Further, the above embodiments are illustrative and should not be construed as limiting the invention. The scope of the present invention is defined by the appended claims, and, in the scope of the invention, the invention may be modified in any way possible without departing from the spirit of the invention.

Claims

Rights request

A method for providing access to a service for accessing a cross-domain service, comprising: a user equipment agent subscribing a service provided by at least one other domain from a domain to which it belongs; loading the user equipment agent for accessing the Information about the subscribed service.

2. The method of claim 1 wherein if the user equipment agent passes the authentication of the domain to which it belongs, the user equipment agent is automatically loaded with information for accessing the service to which it is subscribed; and/or at the user equipment agent Before being produced or sold, loaded with information for accessing the service subscribed to by the user; and/or the user equipment agent may access the domain directly through the at least one other domain without accessing the domain to which it belongs according to the acquired information The service; and/or the information includes authentication information; and/or through the loaded information, the user equipment agent can perform authentication of the service directly with other domains to access the service to which it subscribes.

3. The method of claim 2, wherein the verification information is generated by the other domain providing a service and associated with a domain to which the user equipment agent belongs; and/or the domain to which is a mobile network domain, The other domain is a fixed network domain, the user equipment agent is a femtocell node or a wireless access node; and/or a service level agreement is established between the domain to which it belongs and other domains.

The method of any of the preceding claims, wherein the service is at least one of a network service, an email service, a network shopping service, and an internet related service.

5. A device for providing information for accessing a service for accessing a cross-domain service, comprising: a service subscription providing unit, configured to subscribe to a service provided by at least one other domain and obtain information for accessing the service;

An information providing unit, configured to load, to the user equipment, a letter for accessing a service subscribed to by the user equipment

6. The device according to claim 5, wherein: if the user equipment agent passes the authentication of the domain to which it belongs, the information providing unit automatically loads the user equipment agent with information for accessing the service to which it subscribes; And/or before the user equipment agent is produced or sold, the information providing unit loads information for accessing the service to which it subscribes; and/or the domain to which is the mobile network domain, and the other domain is the fixed network domain, and the user equipment agent is a femtocell or a wireless access node; and / Or establishing a service level agreement between the domain to which the other domain belongs; and/or the service is at least one of a network television service, an email service, a network shopping service, an internet related service; and/or Loaded information, the user device agent can authenticate directly with other domains to access the services they subscribe to.

The device according to claim 5 or 6, wherein the service subscription providing unit is included in an operation support system; and/or the information providing unit is included in a nano management system or a nano cellular gateway.

8. A device that accesses cross-domain services, including:

a service subscription unit, configured to subscribe to a service provided by at least one other domain from a domain to which it belongs; the information obtaining unit, after being authenticated by the domain to which it belongs, is automatically loaded with information for the device to access the service to which it subscribes.

9. The device of claim 8, further comprising a service access unit for performing authentication of services directly with other domains to access services subscribed to by the loaded information; and/or according to the Information, the service provided by the domain may be accessed directly through the at least one other domain without the domain; and/or the information includes verification information; and/or a service level agreement is established between the domain and other domains; and Or the service is at least one of a network television service, an email service, a web shopping service, and an internet related service.

A system for providing access to a cross-domain service, comprising the device of any one of claims 5 to 7, and the device of claim 8 or 9.

A computer program product comprising program code for performing the method, apparatus or system of any one of claims 1 to 10.